misc: update Changelog and NOTICE; remove BUGS and TODO
[nit.git] / c_src / typing._sep.c
index 61d8b35..209b1c1 100644 (file)
+/* This C file is generated by NIT to compile module typing. */
 #include "typing._sep.h"
 void typing___MMSrcModule___do_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::MMSrcModule::do_typing (src/syntax//typing.nit:23,2--28:15)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = NEW_typing___TypingVisitor___init( variable0 /*tc*/,  self); /*new TypingVisitor*/
-  variable1 = variable2;
-  variable2 = ((syntax_base___MMSrcModule___node_t)CALL( self,COLOR_syntax_base___MMSrcModule___node))( self) /*MMSrcModule::node*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable1 /*tv*/,COLOR_parser_prod___Visitor___visit))( variable1 /*tv*/, variable2) /*TypingVisitor::visit*/;
+  struct trace_t trace = {NULL, NULL, 25, LOCATE_typing___MMSrcModule___do_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = NEW_TypingVisitor_typing___TypingVisitor___init( variable[1] /*tc*/, variable[0]) /*new TypingVisitor*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___MMSrcModule___node(variable[0])(variable[0]) /*MMSrcModule::node*/;
+  CALL_parser_prod___Visitor___visit( variable[3] /*tv*/)( variable[3] /*tv*/, variable[4]) /*TypingVisitor::visit*/;
+  return_label0: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___TypingVisitor___visit(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::visit (src/syntax//typing.nit:39,2--41:40)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable0 /*n*/ ==  NIT_NULL /*null*/) || (( variable0 /*n*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable0 /*n*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable0 /*n*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable0 /*n*/,COLOR_kernel___Object_____eqeq))( variable0 /*n*/,  NIT_NULL /*null*/) /*PNode::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    ((typing___PNode___accept_typing_t)CALL( variable0 /*n*/,COLOR_typing___PNode___accept_typing))( variable0 /*n*/,  self) /*PNode::accept_typing*/;
+  struct trace_t trace = {NULL, NULL, 41, LOCATE_typing___TypingVisitor___visit};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[1] /*n*/ ==  NIT_NULL /*null*/) || (( variable[1] /*n*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[1] /*n*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[1] /*n*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[1] /*n*/)( variable[1] /*n*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    CALL_typing___PNode___accept_typing( variable[1] /*n*/)( variable[1] /*n*/, variable[0]) /*PNode::accept_typing*/;
   }
+  return_label1: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___TypingVisitor___variable_ctx(val_t  self) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::variable_ctx (src/syntax//typing.nit:44,2--45:54)"};
+  struct trace_t trace = {NULL, NULL, 46, LOCATE_typing___TypingVisitor___variable_ctx};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___TypingVisitor____variable_ctx( self) /*TypingVisitor::_variable_ctx*/;
 }
 void typing___TypingVisitor___variable_ctx__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::variable_ctx= (src/syntax//typing.nit:44,2--45:54)"};
+  struct trace_t trace = {NULL, NULL, 46, LOCATE_typing___TypingVisitor___variable_ctx__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   ATTR_typing___TypingVisitor____variable_ctx( self) /*TypingVisitor::_variable_ctx*/ =  param0;
   tracehead = trace.prev;
   return;
 }
-val_t typing___TypingVisitor___self_type(val_t  self) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::self_type (src/syntax//typing.nit:47,2--48:42)"};
+val_t typing___TypingVisitor___base_variable_ctx(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 49, LOCATE_typing___TypingVisitor___base_variable_ctx};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___TypingVisitor____base_variable_ctx( self) /*TypingVisitor::_base_variable_ctx*/;
+}
+void typing___TypingVisitor___base_variable_ctx__eq(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 49, LOCATE_typing___TypingVisitor___base_variable_ctx__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  ATTR_typing___TypingVisitor____base_variable_ctx( self) /*TypingVisitor::_base_variable_ctx*/ =  param0;
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___TypingVisitor___escapable_ctx(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 52, LOCATE_typing___TypingVisitor___escapable_ctx};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___TypingVisitor____escapable_ctx( self) /*TypingVisitor::_escapable_ctx*/;
+}
+void typing___TypingVisitor___escapable_ctx__eq(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 52, LOCATE_typing___TypingVisitor___escapable_ctx__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  ATTR_typing___TypingVisitor____escapable_ctx( self) /*TypingVisitor::_escapable_ctx*/ =  param0;
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___TypingVisitor___self_var(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 55, LOCATE_typing___TypingVisitor___self_var};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
-  return ATTR_typing___TypingVisitor____self_type( self) /*TypingVisitor::_self_type*/;
+  return ATTR_typing___TypingVisitor____self_var( self) /*TypingVisitor::_self_var*/;
 }
-void typing___TypingVisitor___self_type__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::self_type= (src/syntax//typing.nit:47,2--48:42)"};
+void typing___TypingVisitor___self_var__eq(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 55, LOCATE_typing___TypingVisitor___self_var__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  ATTR_typing___TypingVisitor____self_type( self) /*TypingVisitor::_self_type*/ =  param0;
+  trace.file = LOCATE_typing;
+  ATTR_typing___TypingVisitor____self_var( self) /*TypingVisitor::_self_var*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 val_t typing___TypingVisitor___top_block(val_t  self) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::top_block (src/syntax//typing.nit:50,2--51:41)"};
+  struct trace_t trace = {NULL, NULL, 58, LOCATE_typing___TypingVisitor___top_block};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___TypingVisitor____top_block( self) /*TypingVisitor::_top_block*/;
 }
 void typing___TypingVisitor___top_block__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::top_block= (src/syntax//typing.nit:50,2--51:41)"};
+  struct trace_t trace = {NULL, NULL, 58, LOCATE_typing___TypingVisitor___top_block__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   ATTR_typing___TypingVisitor____top_block( self) /*TypingVisitor::_top_block*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 val_t typing___TypingVisitor___explicit_super_init_calls(val_t  self) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::explicit_super_init_calls (src/syntax//typing.nit:53,2--54:66)"};
+  struct trace_t trace = {NULL, NULL, 61, LOCATE_typing___TypingVisitor___explicit_super_init_calls};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___TypingVisitor____explicit_super_init_calls( self) /*TypingVisitor::_explicit_super_init_calls*/;
 }
 void typing___TypingVisitor___explicit_super_init_calls__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::explicit_super_init_calls= (src/syntax//typing.nit:53,2--54:66)"};
+  struct trace_t trace = {NULL, NULL, 61, LOCATE_typing___TypingVisitor___explicit_super_init_calls__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   ATTR_typing___TypingVisitor____explicit_super_init_calls( self) /*TypingVisitor::_explicit_super_init_calls*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 val_t typing___TypingVisitor___explicit_other_init_call(val_t  self) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::explicit_other_init_call (src/syntax//typing.nit:56,2--57:55)"};
+  struct trace_t trace = {NULL, NULL, 64, LOCATE_typing___TypingVisitor___explicit_other_init_call};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___TypingVisitor____explicit_other_init_call( self) /*TypingVisitor::_explicit_other_init_call*/;
 }
 void typing___TypingVisitor___explicit_other_init_call__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::explicit_other_init_call= (src/syntax//typing.nit:56,2--57:55)"};
+  struct trace_t trace = {NULL, NULL, 64, LOCATE_typing___TypingVisitor___explicit_other_init_call__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   ATTR_typing___TypingVisitor____explicit_other_init_call( self) /*TypingVisitor::_explicit_other_init_call*/ =  param0;
   tracehead = trace.prev;
   return;
 }
-void typing___TypingVisitor___init(val_t  self, val_t  param0, val_t  param1, int* init_table) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::init (src/syntax//typing.nit:59,2--26)"};
-  val_t variable0;
-  val_t variable1;
+void typing___TypingVisitor___use_if_true_variable_ctx(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 67, LOCATE_typing___TypingVisitor___use_if_true_variable_ctx};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___if_true_variable_ctx( variable[1] /*e*/)( variable[1] /*e*/) /*PExpr::if_true_variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*ctx*/ ==  NIT_NULL /*null*/) || (( variable[3] /*ctx*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*ctx*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*ctx*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*ctx*/)( variable[3] /*ctx*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    CALL_typing___TypingVisitor___variable_ctx__eq(variable[0])(variable[0],  variable[3] /*ctx*/) /*TypingVisitor::variable_ctx=*/;
+  }
+  return_label2: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___TypingVisitor___use_if_false_variable_ctx(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 74, LOCATE_typing___TypingVisitor___use_if_false_variable_ctx};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___if_false_variable_ctx( variable[1] /*e*/)( variable[1] /*e*/) /*PExpr::if_false_variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*ctx*/ ==  NIT_NULL /*null*/) || (( variable[3] /*ctx*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*ctx*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*ctx*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*ctx*/)( variable[3] /*ctx*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    CALL_typing___TypingVisitor___variable_ctx__eq(variable[0])(variable[0],  variable[3] /*ctx*/) /*TypingVisitor::variable_ctx=*/;
+  }
+  return_label3: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___TypingVisitor___once_count(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 81, LOCATE_typing___TypingVisitor___once_count};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___TypingVisitor____once_count( self) /*TypingVisitor::_once_count*/;
+}
+void typing___TypingVisitor___once_count__eq(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 81, LOCATE_typing___TypingVisitor___once_count__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_TypingVisitor].i]) return;
-  ((syntax_base___AbsSyntaxVisitor___init_t)CALL( self,COLOR_syntax_base___AbsSyntaxVisitor___init))( self,  param0,  param1, init_table /*YYY*/) /*AbsSyntaxVisitor::init*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_TypingVisitor].i] = 1;
+  trace.file = LOCATE_typing;
+  ATTR_typing___TypingVisitor____once_count( self) /*TypingVisitor::_once_count*/ =  param0;
+  tracehead = trace.prev;
+  return;
+}
+void typing___TypingVisitor___init(val_t  self, val_t  param0, val_t  param1, int* init_table) {
+  struct trace_t trace = {NULL, NULL, 84, LOCATE_typing___TypingVisitor___init};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  if (init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_TypingVisitor].i]) return;
+  /* Register variable[3]: Method return value and escape marker */
+  CALL_syntax_base___AbsSyntaxVisitor___init(variable[0])(variable[0], variable[1], variable[2], init_table /*YYY*/) /*AbsSyntaxVisitor::init*/;
+  return_label4: while(false);
+  init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_TypingVisitor].i] = 1;
   tracehead = trace.prev;
   return;
 }
 val_t typing___TypingVisitor___get_default_constructor_for(val_t  self, val_t  param0, val_t  param1, val_t  param2) {
-  struct trace_t trace = {NULL, "typing::TypingVisitor::get_default_constructor_for (src/syntax//typing.nit:61,2--96:14)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-  val_t variable6;
-  val_t variable7;
-    val_t variable8;
-    val_t variable9;
-    val_t variable10;
-    val_t variable11;
-    val_t variable12;
-      val_t variable13;
-      val_t variable14;
-      val_t variable15;
-      val_t variable16;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 =  param2;
-  variable3 =  self;
-  variable5 = NEW_array___Array___init(); /*new Array[MMMethod]*/
-  variable4 = variable5;
-  variable6 = NEW_array___Array___init(); /*new Array[MMMethod]*/
-  variable5 = variable6;
-  variable7 = ((genericity___MMLocalProperty___signature_t)CALL( variable2 /*prop*/,COLOR_static_type___MMLocalProperty___signature))( variable2 /*prop*/) /*MMMethod::signature*/;
-  variable7 = ((static_type___MMSignature___arity_t)CALL(variable7,COLOR_static_type___MMSignature___arity))(variable7) /*MMSignature::arity*/;
-  variable6 = variable7;
-  variable7 = ((abstractmetamodel___MMLocalClass___global_properties_t)CALL( variable1 /*c*/,COLOR_abstractmetamodel___MMLocalClass___global_properties))( variable1 /*c*/) /*MMLocalClass::global_properties*/;
-  variable7 = ((abstract_collection___Collection___iterator_t)CALL(variable7,COLOR_abstract_collection___Collection___iterator))(variable7) /*Set::iterator*/;
+  struct trace_t trace = {NULL, NULL, 86, LOCATE_typing___TypingVisitor___get_default_constructor_for};
+        static val_t once_value_7; static int once_bool_7; /* Once value for variable[16]*/
+          static val_t once_value_8 = NIT_NULL; /* Once value for string variable[16]*/
+        static val_t once_value_10 = NIT_NULL; /* Once value for string variable[14]*/
+        static val_t once_value_11 = NIT_NULL; /* Once value for string variable[14]*/
+        static val_t once_value_12 = NIT_NULL; /* Once value for string variable[14]*/
+      static val_t once_value_13 = NIT_NULL; /* Once value for string variable[11]*/
+      static val_t once_value_14 = NIT_NULL; /* Once value for string variable[11]*/
+      static val_t once_value_15 = NIT_NULL; /* Once value for string variable[11]*/
+      static val_t once_value_16 = NIT_NULL; /* Once value for string variable[11]*/
+          static val_t once_value_18 = NIT_NULL; /* Once value for string variable[14]*/
+          static val_t once_value_19 = NIT_NULL; /* Once value for string variable[14]*/
+          static val_t once_value_20 = NIT_NULL; /* Once value for string variable[14]*/
+        static val_t once_value_21 = NIT_NULL; /* Once value for string variable[11]*/
+        static val_t once_value_22 = NIT_NULL; /* Once value for string variable[11]*/
+        static val_t once_value_23 = NIT_NULL; /* Once value for string variable[11]*/
+        static val_t once_value_24 = NIT_NULL; /* Once value for string variable[11]*/
+        static val_t once_value_25 = NIT_NULL; /* Once value for string variable[10]*/
+        static val_t once_value_26 = NIT_NULL; /* Once value for string variable[10]*/
+  val_t variable[17];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Method return value and escape marker */
+  /* Register variable[5]: Local variable */
+  variable[5] = variable[0];
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = NEW_Array_array___Array___init() /*new Array[MMMethod]*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = NEW_Array_array___Array___init() /*new Array[MMMethod]*/;
+  variable[7] = variable[8];
+  /* Register variable[8]: Local variable */
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMLocalProperty___signature( variable[3] /*prop*/)( variable[3] /*prop*/) /*MMLocalProperty::signature*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMSignature___arity(variable[9])(variable[9]) /*MMSignature::arity*/;
+  variable[8] = variable[9];
+  /* Register variable[9]: Result */
+  variable[9] = CALL_abstractmetamodel___MMLocalClass___global_properties( variable[2] /*c*/)( variable[2] /*c*/) /*MMLocalClass::global_properties*/;
+  /* Register variable[9]: For iterator */
+  variable[9] = CALL_abstract_collection___Collection___iterator(variable[9])(variable[9]) /*Collection::iterator*/;
   while (true) { /*for*/
-    variable8 = ((abstract_collection___Iterator___is_ok_t)CALL(variable7,COLOR_abstract_collection___Iterator___is_ok))(variable7) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable8)) break; /*for*/
-    variable8 = ((abstract_collection___Iterator___item_t)CALL(variable7,COLOR_abstract_collection___Iterator___item))(variable7) /*Iterator::item*/;
-    variable9 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL( variable8 /*g*/,COLOR_abstractmetamodel___MMGlobalProperty___is_init))( variable8 /*g*/) /*MMGlobalProperty::is_init*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable9)))) { /*if*/
-      goto continue_4;
-    }
-    variable9 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL( variable8 /*g*/,COLOR_abstractmetamodel___MMGlobalProperty___intro))( variable8 /*g*/) /*MMGlobalProperty::intro*/;
-    variable9 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL(variable9,COLOR_abstractmetamodel___MMLocalProperty___local_class))(variable9) /*MMConcreteProperty::local_class*/;
-    variable9 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable9 ==  variable1 /*c*/) || ((variable9 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable9,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable9, variable1 /*c*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable9,COLOR_kernel___Object_____eqeq))(variable9,  variable1 /*c*/) /*MMLocalClass::==*/)))))));
-    if (UNTAG_Bool(variable9)) { /*if*/
-      goto continue_4;
-    }
-    variable10 = ((inheritance___MMLocalClass_____bra_t)CALL( variable1 /*c*/,COLOR_abstractmetamodel___MMLocalClass_____bra))( variable1 /*c*/,  variable8 /*g*/) /*MMLocalClass::[]*/;
-    variable9 = variable10;
-    variable10 = TAG_Bool(( variable9 /*gp*/==NIT_NULL) || VAL_ISA( variable9 /*gp*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
-    if (!UNTAG_Bool(variable10)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:73,4--25\n"); nit_exit(1);}
-    variable11 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL( variable8 /*g*/,COLOR_abstractmetamodel___MMGlobalProperty___intro))( variable8 /*g*/) /*MMGlobalProperty::intro*/;
-    variable11 = ((genericity___MMLocalProperty___signature_t)CALL(variable11,COLOR_static_type___MMLocalProperty___signature))(variable11) /*MMConcreteProperty::signature*/;
-    variable11 = ((static_type___MMSignature___arity_t)CALL(variable11,COLOR_static_type___MMSignature___arity))(variable11) /*MMSignature::arity*/;
-    variable10 = variable11;
-    variable11 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable2 /*prop*/ ==  NIT_NULL /*null*/) || (( variable2 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*prop*/,COLOR_kernel___Object_____eqeq))( variable2 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))))));
-    variable12 = variable11;
-    if (UNTAG_Bool(variable12)) { /* and */
-      variable12 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL( variable8 /*g*/,COLOR_abstractmetamodel___MMGlobalProperty___intro))( variable8 /*g*/) /*MMGlobalProperty::intro*/;
-      variable12 = ((abstractmetamodel___MMLocalProperty___name_t)CALL(variable12,COLOR_abstractmetamodel___MMLocalProperty___name))(variable12) /*MMConcreteProperty::name*/;
-      variable13 = ((abstractmetamodel___MMLocalProperty___name_t)CALL( variable2 /*prop*/,COLOR_abstractmetamodel___MMLocalProperty___name))( variable2 /*prop*/) /*MMMethod::name*/;
-      variable12 = TAG_Bool((variable12 == variable13) || ((variable12 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable12,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable12,variable13)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable12,COLOR_kernel___Object_____eqeq))(variable12, variable13) /*Symbol::==*/)))));
-    }
-    variable11 = variable12;
-    if (UNTAG_Bool(variable11)) { /*if*/
-      variable11 = TAG_Bool(( variable10 /*garity*/)==( TAG_Int(0)));
-      variable12 = variable11;
-      if (!UNTAG_Bool(variable12)) { /* or */
-        variable12 = TAG_Bool(( variable10 /*garity*/)==( variable6 /*parity*/));
-      }
-      variable11 = variable12;
-      if (UNTAG_Bool(variable11)) { /*if*/
-        variable3 =  variable9 /*gp*/;
-        goto return_label3;
+    /* Register variable[10]: For 'is_ok' result */
+    variable[10] = CALL_abstract_collection___Iterator___is_ok(variable[9])(variable[9]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[10])) break; /*for*/
+    variable[10] = CALL_abstract_collection___Iterator___item(variable[9])(variable[9]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[11]: Local variable */
+    variable[11] = variable[10];
+    /* Register variable[12]: Result */
+    variable[12] = CALL_abstractmetamodel___MMGlobalProperty___is_init_for( variable[11] /*g*/)( variable[11] /*g*/,  variable[2] /*c*/) /*MMGlobalProperty::is_init_for*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[12])))) { /*if*/
+      goto continue_6;
+    }
+    /* Register variable[12]: Local variable */
+    /* Register variable[13]: Result */
+    variable[13] = CALL_abstractmetamodel___MMLocalClass_____bra( variable[2] /*c*/)( variable[2] /*c*/,  variable[11] /*g*/) /*MMLocalClass::[]*/;
+    variable[12] = variable[13];
+    /* Register variable[13]: Local variable */
+    /* Register variable[14]: Result */
+    variable[14] = CALL_static_type___MMLocalClass___get_type( variable[2] /*c*/)( variable[2] /*c*/) /*MMLocalClass::get_type*/;
+    /* Register variable[14]: Result */
+    variable[14] = CALL_static_type___MMLocalProperty___signature_for( variable[12] /*gp*/)( variable[12] /*gp*/, variable[14]) /*MMLocalProperty::signature_for*/;
+    variable[13] = variable[14];
+    /* Register variable[14]: Result */
+    variable[14] = TAG_Bool(( variable[12] /*gp*/==NIT_NULL) || VAL_ISA( variable[12] /*gp*/, COLOR_MMSrcMethod, ID_MMSrcMethod)) /*cast MMSrcMethod*/;
+    if (!UNTAG_Bool(variable[14])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___TypingVisitor___get_default_constructor_for, LOCATE_typing, 98); nit_exit(1);}
+    /* Register variable[14]: Local variable */
+    /* Register variable[15]: Result */
+    variable[15] = CALL_static_type___MMSignature___arity( variable[13] /*gps*/)( variable[13] /*gps*/) /*MMSignature::arity*/;
+    variable[14] = variable[15];
+    /* Register variable[15]: Result */
+    variable[15] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*prop*/ ==  NIT_NULL /*null*/) || (( variable[3] /*prop*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*prop*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*prop*/)( variable[3] /*prop*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+    /* Ensure var variable[15]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[15])) { /* and */
+      /* Register variable[15]: Result */
+      variable[15] = CALL_abstractmetamodel___MMLocalProperty___name( variable[12] /*gp*/)( variable[12] /*gp*/) /*MMLocalProperty::name*/;
+      /* Register variable[16]: Result */
+      variable[16] = CALL_abstractmetamodel___MMLocalProperty___name( variable[3] /*prop*/)( variable[3] /*prop*/) /*MMLocalProperty::name*/;
+      /* Register variable[15]: Result */
+      variable[15] = TAG_Bool((variable[15] == variable[16]) || ((variable[15] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[15])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[15],variable[16])):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[15])(variable[15], variable[16]) /*Object::==*/)))));
+    }
+    /* Register variable[15]: Result */
+    if (UNTAG_Bool(variable[15])) { /*if*/
+      /* Register variable[15]: Result */
+      variable[15] = TAG_Bool(( variable[14] /*garity*/)==( TAG_Int(0)));
+      /* Ensure var variable[15]: Left 'or' operand*/
+      if (!UNTAG_Bool(variable[15])) { /* or */
+        /* Register variable[15]: Result */
+        variable[15] = TAG_Bool(( variable[8] /*parity*/)==( variable[14] /*garity*/));
+        /* Ensure var variable[15]: Left 'and' operand*/
+        if (UNTAG_Bool(variable[15])) { /* and */
+          /* Register variable[15]: Result */
+          variable[15] = CALL_static_type___MMLocalProperty___signature( variable[3] /*prop*/)( variable[3] /*prop*/) /*MMLocalProperty::signature*/;
+          /* Register variable[15]: Result */
+          variable[15] = CALL_static_type___MMSignature_____l(variable[15])(variable[15],  variable[13] /*gps*/) /*MMSignature::<*/;
+        }
+        /* Register variable[15]: Result */
+      }
+      /* Register variable[15]: Result */
+      if (UNTAG_Bool(variable[15])) { /*if*/
+        variable[4] =  variable[12] /*gp*/;
+        goto return_label5;
       } else { /*if*/
-        ((array___AbstractArray___add_t)CALL( variable5 /*false_candidates*/,COLOR_abstract_collection___SimpleCollection___add))( variable5 /*false_candidates*/,  variable9 /*gp*/) /*Array::add*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[7] /*false_candidates*/)( variable[7] /*false_candidates*/,  variable[12] /*gp*/) /*AbstractArray::add*/;
       }
     } else { /*if*/
-      variable11 = TAG_Bool(( variable10 /*garity*/)==( TAG_Int(0)));
-      if (UNTAG_Bool(variable11)) { /*if*/
-        ((array___AbstractArray___add_t)CALL( variable4 /*candidates*/,COLOR_abstract_collection___SimpleCollection___add))( variable4 /*candidates*/,  variable9 /*gp*/) /*Array::add*/;
-        ((array___AbstractArray___add_t)CALL( variable5 /*false_candidates*/,COLOR_abstract_collection___SimpleCollection___add))( variable5 /*false_candidates*/,  variable9 /*gp*/) /*Array::add*/;
+      /* Register variable[15]: Result */
+      variable[15] = TAG_Bool(( variable[14] /*garity*/)==( TAG_Int(0)));
+      /* Ensure var variable[15]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[15])) { /* and */
+        /* Register variable[15]: Result */
+        variable[15] = CALL_abstractmetamodel___MMLocalProperty___name( variable[12] /*gp*/)( variable[12] /*gp*/) /*MMLocalProperty::name*/;
+        /* Register variable[16]: Once expression result */
+        if (once_bool_7) variable[16] = once_value_7;
+        else {
+          /* Register variable[16]: Once String constant */
+          if (once_value_8 != NIT_NULL) variable[16] = once_value_8;
+          else {
+            variable[16] = NEW_String_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)) /*new String*/;
+            once_value_8 = variable[16];
+          }
+          /* Register variable[16]: Result */
+          /* Register variable[16]: Result */
+          variable[16] = CALL_symbol___String___to_symbol(variable[16])(variable[16]) /*String::to_symbol*/;
+          once_value_7 = variable[16];
+          once_bool_7 = true;
+        }
+        /* Register variable[16]: Result */
+        /* Register variable[15]: Result */
+        variable[15] = TAG_Bool((variable[15] == variable[16]) || ((variable[15] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[15])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[15],variable[16])):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[15])(variable[15], variable[16]) /*Object::==*/)))));
+      }
+      /* Register variable[15]: Result */
+      if (UNTAG_Bool(variable[15])) { /*if*/
+        CALL_abstract_collection___SimpleCollection___add( variable[6] /*candidates*/)( variable[6] /*candidates*/,  variable[12] /*gp*/) /*AbstractArray::add*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[7] /*false_candidates*/)( variable[7] /*false_candidates*/,  variable[12] /*gp*/) /*AbstractArray::add*/;
       } else { /*if*/
-        ((array___AbstractArray___add_t)CALL( variable5 /*false_candidates*/,COLOR_abstract_collection___SimpleCollection___add))( variable5 /*false_candidates*/,  variable9 /*gp*/) /*Array::add*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[7] /*false_candidates*/)( variable[7] /*false_candidates*/,  variable[12] /*gp*/) /*AbstractArray::add*/;
       }
     }
-    continue_4: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable7,COLOR_abstract_collection___Iterator___next))(variable7) /*Iterator::next*/;
+    continue_6: while(0);
+    CALL_abstract_collection___Iterator___next(variable[9])(variable[9]) /*Iterator::next*/;
   }
-  break_4: while(0);
-  variable7 = ((array___AbstractArray___length_t)CALL( variable4 /*candidates*/,COLOR_abstract_collection___Collection___length))( variable4 /*candidates*/) /*Array::length*/;
-  variable7 = TAG_Bool((variable7)==( TAG_Int(1)));
-  if (UNTAG_Bool(variable7)) { /*if*/
-    variable7 = ((abstract_collection___IndexedCollection___first_t)CALL( variable4 /*candidates*/,COLOR_abstract_collection___Collection___first))( variable4 /*candidates*/) /*Array::first*/;
-    variable3 = variable7;
-    goto return_label3;
+  break_6: while(0);
+  /* Register variable[9]: Result */
+  variable[9] = CALL_abstract_collection___Collection___length( variable[6] /*candidates*/)( variable[6] /*candidates*/) /*AbstractArrayRead::length*/;
+  /* Register variable[9]: Result */
+  variable[9] = TAG_Bool((variable[9])==( TAG_Int(1)));
+  if (UNTAG_Bool(variable[9])) { /*if*/
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstract_collection___Collection___first( variable[6] /*candidates*/)( variable[6] /*candidates*/) /*IndexedCollectionRead::first*/;
+    variable[4] = variable[9];
+    goto return_label5;
   } else { /*if*/
-    variable7 = ((array___AbstractArray___is_empty_t)CALL( variable5 /*false_candidates*/,COLOR_abstract_collection___Collection___is_empty))( variable5 /*false_candidates*/) /*Array::is_empty*/;
-    if (UNTAG_Bool(variable7)) { /*if*/
-      variable7 = NEW_string___String___init(); /*new String*/
-      variable8 = NEW_string___String___with_native(BOX_NativeString("Fatal error: there is no available constrctor in "), TAG_Int(49)); /*new String*/
-      variable9 = variable8;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable9) /*String::append*/;
-      variable10 =  variable1 /*c*/;
-      variable10 = ((string___String___to_s_t)CALL(variable10,COLOR_string___Object___to_s))(variable10) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable10) /*String::append*/;
-      variable11 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable12 = variable11;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable12) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___warning_t)CALL( variable3 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___warning))( variable3 /*v*/,  variable0 /*n*/, variable7) /*TypingVisitor::warning*/;
-      variable3 =  NIT_NULL /*null*/;
-      goto return_label3;
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstract_collection___Collection___length( variable[6] /*candidates*/)( variable[6] /*candidates*/) /*AbstractArrayRead::length*/;
+    /* Register variable[9]: Result */
+    variable[9] = TAG_Bool(UNTAG_Int(variable[9])>UNTAG_Int( TAG_Int(0)));
+    if (UNTAG_Bool(variable[9])) { /*if*/
+      /* Register variable[9]: Local variable */
+      /* Register variable[10]: Result */
+      variable[10] = NEW_Array_array___Array___init() /*new Array[String]*/;
+      variable[9] = variable[10];
+      /* Register variable[10]: For iterator */
+      variable[10] = CALL_abstract_collection___Collection___iterator( variable[6] /*candidates*/)( variable[6] /*candidates*/) /*AbstractArrayRead::iterator*/;
+      while (true) { /*for*/
+        /* Register variable[11]: For 'is_ok' result */
+        variable[11] = CALL_abstract_collection___Iterator___is_ok(variable[10])(variable[10]) /*ArrayIterator::is_ok*/;
+        if (!UNTAG_Bool(variable[11])) break; /*for*/
+        variable[11] = CALL_abstract_collection___Iterator___item(variable[10])(variable[10]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+        /* Register variable[12]: Local variable */
+        variable[12] = variable[11];
+        variable[13] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[14]: Once String constant */
+        if (once_value_10 != NIT_NULL) variable[14] = once_value_10;
+        else {
+          variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+          once_value_10 = variable[14];
+        }
+        /* Register variable[14]: Result */
+        /* Ensure var variable[14]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+        /* Register variable[14]: Result */
+        variable[14] = CALL_abstractmetamodel___MMLocalProperty___full_name( variable[12] /*p*/)( variable[12] /*p*/) /*MMLocalProperty::full_name*/;
+        /* Ensure var variable[14]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+        /* Register variable[14]: Once String constant */
+        if (once_value_11 != NIT_NULL) variable[14] = once_value_11;
+        else {
+          variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+          once_value_11 = variable[14];
+        }
+        /* Register variable[14]: Result */
+        /* Ensure var variable[14]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+        /* Register variable[14]: Result */
+        variable[14] = CALL_static_type___MMLocalProperty___signature( variable[12] /*p*/)( variable[12] /*p*/) /*MMLocalProperty::signature*/;
+        /* Ensure var variable[14]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], CALL_string___Object___to_s(variable[14])(variable[14]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[14]: Once String constant */
+        if (once_value_12 != NIT_NULL) variable[14] = once_value_12;
+        else {
+          variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+          once_value_12 = variable[14];
+        }
+        /* Register variable[14]: Result */
+        /* Ensure var variable[14]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+        /* Register variable[13]: Result */
+        variable[13] = CALL_string___Object___to_s(variable[13])(variable[13]) /*Object::to_s*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[9] /*a*/)( variable[9] /*a*/, variable[13]) /*AbstractArray::add*/;
+        continue_9: while(0);
+        CALL_abstract_collection___Iterator___next(variable[10])(variable[10]) /*ArrayIterator::next*/;
+      }
+      break_9: while(0);
+      variable[10] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[11]: Once String constant */
+      if (once_value_13 != NIT_NULL) variable[11] = once_value_13;
+      else {
+        variable[11] = NEW_String_string___String___with_native(BOX_NativeString("Error: Conflicting default constructor to call for "), TAG_Int(51)) /*new String*/;
+        once_value_13 = variable[11];
+      }
+      /* Register variable[11]: Result */
+      /* Ensure var variable[11]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+      variable[11] =  variable[2] /*c*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], CALL_string___Object___to_s(variable[11])(variable[11]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[11]: Once String constant */
+      if (once_value_14 != NIT_NULL) variable[11] = once_value_14;
+      else {
+        variable[11] = NEW_String_string___String___with_native(BOX_NativeString(": "), TAG_Int(2)) /*new String*/;
+        once_value_14 = variable[11];
+      }
+      /* Register variable[11]: Result */
+      /* Ensure var variable[11]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+      /* Register variable[11]: Once String constant */
+      if (once_value_15 != NIT_NULL) variable[11] = once_value_15;
+      else {
+        variable[11] = NEW_String_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)) /*new String*/;
+        once_value_15 = variable[11];
+      }
+      /* Register variable[11]: Result */
+      /* Register variable[11]: Result */
+      variable[11] = CALL_string___Collection___join( variable[9] /*a*/)( variable[9] /*a*/, variable[11]) /*Collection::join*/;
+      /* Ensure var variable[11]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+      /* Register variable[11]: Once String constant */
+      if (once_value_16 != NIT_NULL) variable[11] = once_value_16;
+      else {
+        variable[11] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_16 = variable[11];
+      }
+      /* Register variable[11]: Result */
+      /* Ensure var variable[11]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[5] /*v*/)( variable[5] /*v*/,  variable[1] /*n*/, variable[10]) /*AbsSyntaxVisitor::error*/;
+      variable[4] =  NIT_NULL /*null*/;
+      goto return_label5;
     } else { /*if*/
-      variable7 = NEW_string___String___init(); /*new String*/
-      variable8 = NEW_string___String___with_native(BOX_NativeString("Error: Conflicting default constructor to call for "), TAG_Int(51)); /*new String*/
-      variable9 = variable8;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable9) /*String::append*/;
-      variable10 =  variable1 /*c*/;
-      variable10 = ((string___String___to_s_t)CALL(variable10,COLOR_string___Object___to_s))(variable10) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable10) /*String::append*/;
-      variable11 = NEW_string___String___with_native(BOX_NativeString(": "), TAG_Int(2)); /*new String*/
-      variable12 = variable11;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable12) /*String::append*/;
-      variable13 = NEW_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)); /*new String*/
-      variable13 = ((string___Collection___join_t)CALL( variable5 /*false_candidates*/,COLOR_string___Collection___join))( variable5 /*false_candidates*/, variable13) /*Array::join*/;
-      variable14 = variable13;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable14) /*String::append*/;
-      variable15 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable16 = variable15;
-      ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable16) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable3 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable3 /*v*/,  variable0 /*n*/, variable7) /*TypingVisitor::error*/;
-      variable3 =  NIT_NULL /*null*/;
-      goto return_label3;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstract_collection___Collection___length( variable[7] /*false_candidates*/)( variable[7] /*false_candidates*/) /*AbstractArrayRead::length*/;
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Bool(UNTAG_Int(variable[9])>UNTAG_Int( TAG_Int(0)));
+      if (UNTAG_Bool(variable[9])) { /*if*/
+        /* Register variable[9]: Local variable */
+        /* Register variable[10]: Result */
+        variable[10] = NEW_Array_array___Array___init() /*new Array[String]*/;
+        variable[9] = variable[10];
+        /* Register variable[10]: For iterator */
+        variable[10] = CALL_abstract_collection___Collection___iterator( variable[7] /*false_candidates*/)( variable[7] /*false_candidates*/) /*AbstractArrayRead::iterator*/;
+        while (true) { /*for*/
+          /* Register variable[11]: For 'is_ok' result */
+          variable[11] = CALL_abstract_collection___Iterator___is_ok(variable[10])(variable[10]) /*ArrayIterator::is_ok*/;
+          if (!UNTAG_Bool(variable[11])) break; /*for*/
+          variable[11] = CALL_abstract_collection___Iterator___item(variable[10])(variable[10]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+          /* Register variable[12]: Local variable */
+          variable[12] = variable[11];
+          variable[13] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+          /* Register variable[14]: Once String constant */
+          if (once_value_18 != NIT_NULL) variable[14] = once_value_18;
+          else {
+            variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+            once_value_18 = variable[14];
+          }
+          /* Register variable[14]: Result */
+          /* Ensure var variable[14]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+          /* Register variable[14]: Result */
+          variable[14] = CALL_abstractmetamodel___MMLocalProperty___full_name( variable[12] /*p*/)( variable[12] /*p*/) /*MMLocalProperty::full_name*/;
+          /* Ensure var variable[14]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+          /* Register variable[14]: Once String constant */
+          if (once_value_19 != NIT_NULL) variable[14] = once_value_19;
+          else {
+            variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+            once_value_19 = variable[14];
+          }
+          /* Register variable[14]: Result */
+          /* Ensure var variable[14]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+          /* Register variable[14]: Result */
+          variable[14] = CALL_static_type___MMLocalProperty___signature( variable[12] /*p*/)( variable[12] /*p*/) /*MMLocalProperty::signature*/;
+          /* Ensure var variable[14]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], CALL_string___Object___to_s(variable[14])(variable[14]) /*Object::to_s*/) /*AbstractArray::add*/;
+          /* Register variable[14]: Once String constant */
+          if (once_value_20 != NIT_NULL) variable[14] = once_value_20;
+          else {
+            variable[14] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+            once_value_20 = variable[14];
+          }
+          /* Register variable[14]: Result */
+          /* Ensure var variable[14]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[13])(variable[13], variable[14]) /*AbstractArray::add*/;
+          /* Register variable[13]: Result */
+          variable[13] = CALL_string___Object___to_s(variable[13])(variable[13]) /*Object::to_s*/;
+          CALL_abstract_collection___SimpleCollection___add( variable[9] /*a*/)( variable[9] /*a*/, variable[13]) /*AbstractArray::add*/;
+          continue_17: while(0);
+          CALL_abstract_collection___Iterator___next(variable[10])(variable[10]) /*ArrayIterator::next*/;
+        }
+        break_17: while(0);
+        variable[10] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[11]: Once String constant */
+        if (once_value_21 != NIT_NULL) variable[11] = once_value_21;
+        else {
+          variable[11] = NEW_String_string___String___with_native(BOX_NativeString("Error: there is no available compatible constrctor in "), TAG_Int(54)) /*new String*/;
+          once_value_21 = variable[11];
+        }
+        /* Register variable[11]: Result */
+        /* Ensure var variable[11]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+        variable[11] =  variable[2] /*c*/ /* Ensure var: super-string element*/;
+        CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], CALL_string___Object___to_s(variable[11])(variable[11]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[11]: Once String constant */
+        if (once_value_22 != NIT_NULL) variable[11] = once_value_22;
+        else {
+          variable[11] = NEW_String_string___String___with_native(BOX_NativeString(". Discarded candidates are "), TAG_Int(27)) /*new String*/;
+          once_value_22 = variable[11];
+        }
+        /* Register variable[11]: Result */
+        /* Ensure var variable[11]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+        /* Register variable[11]: Once String constant */
+        if (once_value_23 != NIT_NULL) variable[11] = once_value_23;
+        else {
+          variable[11] = NEW_String_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)) /*new String*/;
+          once_value_23 = variable[11];
+        }
+        /* Register variable[11]: Result */
+        /* Register variable[11]: Result */
+        variable[11] = CALL_string___Collection___join( variable[9] /*a*/)( variable[9] /*a*/, variable[11]) /*Collection::join*/;
+        /* Ensure var variable[11]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+        /* Register variable[11]: Once String constant */
+        if (once_value_24 != NIT_NULL) variable[11] = once_value_24;
+        else {
+          variable[11] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+          once_value_24 = variable[11];
+        }
+        /* Register variable[11]: Result */
+        /* Ensure var variable[11]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+        /* Register variable[10]: Result */
+        variable[10] = CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[5] /*v*/)( variable[5] /*v*/,  variable[1] /*n*/, variable[10]) /*AbsSyntaxVisitor::error*/;
+        variable[4] =  NIT_NULL /*null*/;
+        goto return_label5;
+      } else { /*if*/
+        variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_25 != NIT_NULL) variable[10] = once_value_25;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: there is no available compatible constrctor in "), TAG_Int(54)) /*new String*/;
+          once_value_25 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        variable[10] =  variable[2] /*c*/ /* Ensure var: super-string element*/;
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_26 != NIT_NULL) variable[10] = once_value_26;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+          once_value_26 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        /* Register variable[9]: Result */
+        variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[5] /*v*/)( variable[5] /*v*/,  variable[1] /*n*/, variable[9]) /*AbsSyntaxVisitor::error*/;
+        variable[4] =  NIT_NULL /*null*/;
+        goto return_label5;
+      }
     }
   }
-  return_label3: while(false);
-  tracehead = trace.prev;
-  return variable3;
-}
-val_t typing___VariableContext_____bra(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::VariableContext::[] (src/syntax//typing.nit:104,2--111:14)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_typing___VariableContext____dico( self) /*VariableContext::_dico*/;
-  variable1 = ((abstract_collection___Map___has_key_t)CALL(variable1,COLOR_abstract_collection___Map___has_key))(variable1,  variable0 /*s*/) /*Map::has_key*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ATTR_typing___VariableContext____dico( self) /*VariableContext::_dico*/;
-    variable1 = ((abstract_collection___Map_____bra_t)CALL(variable1,COLOR_abstract_collection___Map_____bra))(variable1,  variable0 /*s*/) /*Map::[]*/;
-    goto return_label5;
-  } else { /*if*/
-    variable1 =  NIT_NULL /*null*/;
-    goto return_label5;
-  }
   return_label5: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[4];
 }
-void typing___VariableContext___add(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::VariableContext::add (src/syntax//typing.nit:115,2--118:19)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_typing___VariableContext____dico( self) /*VariableContext::_dico*/;
-  variable2 = ((syntax_base___Variable___name_t)CALL( variable0 /*v*/,COLOR_syntax_base___Variable___name))( variable0 /*v*/) /*Variable::name*/;
-  ((abstract_collection___Map_____braeq_t)CALL(variable1,COLOR_abstract_collection___Map_____braeq))(variable1, variable2,  variable0 /*v*/) /*Map::[]=*/;
+void typing___PNode___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 140, LOCATE_typing___PNode___accept_typing};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_syntax_base___PNode___accept_abs_syntax_visitor(variable[0])(variable[0],  variable[1] /*v*/) /*PNode::accept_abs_syntax_visitor*/;
+  CALL_typing___PNode___after_typing(variable[0])(variable[0],  variable[1] /*v*/) /*PNode::after_typing*/;
+  return_label27: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___VariableContext___stype(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::VariableContext::stype (src/syntax//typing.nit:122,2--126:16)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___Variable___stype_t)CALL( variable0 /*v*/,COLOR_syntax_base___Variable___stype))( variable0 /*v*/) /*Variable::stype*/;
-  goto return_label7;
-  return_label7: while(false);
-  tracehead = trace.prev;
-  return variable1;
-}
-val_t typing___VariableContext___sub(val_t  self) {
-  struct trace_t trace = {NULL, "typing::VariableContext::sub (src/syntax//typing.nit:132,2--135:53)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = NEW_typing___SubVariableContext___with( self,  NIT_NULL /*null*/,  NIT_NULL /*null*/); /*new SubVariableContext*/
-  goto return_label8;
-  return_label8: while(false);
-  tracehead = trace.prev;
-  return variable0;
-}
-val_t typing___VariableContext___sub_with(val_t  self, val_t  param0, val_t  param1) {
-  struct trace_t trace = {NULL, "typing::VariableContext::sub_with (src/syntax//typing.nit:138,2--141:47)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 = NEW_typing___SubVariableContext___with( self,  variable0 /*v*/,  variable1 /*t*/); /*new SubVariableContext*/
-  goto return_label9;
-  return_label9: while(false);
-  tracehead = trace.prev;
-  return variable2;
-}
-void typing___VariableContext___init(val_t  self, int* init_table) {
-  struct trace_t trace = {NULL, "typing::VariableContext::init (src/syntax//typing.nit:144,2--146:38)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_VariableContext].i]) return;
-  variable0 = NEW_hash___HashMap___init(); /*new HashMap[Symbol, Variable]*/
-  ATTR_typing___VariableContext____dico( self) /*VariableContext::_dico*/ = variable0;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_VariableContext].i] = 1;
+void typing___PNode___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 145, LOCATE_typing___PNode___after_typing};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  return_label28: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___SubVariableContext___prev(val_t  self) {
-  struct trace_t trace = {NULL, "typing::SubVariableContext::prev (src/syntax//typing.nit:152,2--37)"};
-  trace.prev = tracehead; tracehead = &trace;
-  tracehead = trace.prev;
-  return ATTR_typing___SubVariableContext____prev( self) /*SubVariableContext::_prev*/;
-}
-val_t typing___SubVariableContext_____bra(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::SubVariableContext::[] (src/syntax//typing.nit:156,2--161:16)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_typing___VariableContext____dico( self) /*SubVariableContext::_dico*/;
-  variable1 = ((abstract_collection___Map___has_key_t)CALL(variable1,COLOR_abstract_collection___Map___has_key))(variable1,  variable0 /*s*/) /*Map::has_key*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ATTR_typing___VariableContext____dico( self) /*SubVariableContext::_dico*/;
-    variable1 = ((abstract_collection___Map_____bra_t)CALL(variable1,COLOR_abstract_collection___Map_____bra))(variable1,  variable0 /*s*/) /*Map::[]*/;
-    goto return_label11;
-  } else { /*if*/
-    variable1 = ((typing___SubVariableContext___prev_t)CALL( self,COLOR_typing___SubVariableContext___prev))( self) /*SubVariableContext::prev*/;
-    variable1 = ((typing___VariableContext_____bra_t)CALL(variable1,COLOR_typing___VariableContext_____bra))(variable1,  variable0 /*s*/) /*VariableContext::[]*/;
-    goto return_label11;
-  }
-  return_label11: while(false);
-  tracehead = trace.prev;
-  return variable1;
-}
-val_t typing___SubVariableContext___stype(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::SubVariableContext::stype (src/syntax//typing.nit:165,2--170:21)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_typing___SubVariableContext____variable( self) /*SubVariableContext::_variable*/;
-  variable1 = TAG_Bool((variable1 ==  variable0 /*v*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, variable0 /*v*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  variable0 /*v*/) /*Variable::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ATTR_typing___SubVariableContext____var_type( self) /*SubVariableContext::_var_type*/;
-    goto return_label12;
+void typing___PClassdef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 149, LOCATE_typing___PClassdef___accept_typing};
+  static val_t once_value_30 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Once String constant */
+  if (once_value_30 != NIT_NULL) variable[3] = once_value_30;
+  else {
+    variable[3] = NEW_String_string___String___with_native(BOX_NativeString("self"), TAG_Int(4)) /*new String*/;
+    once_value_30 = variable[3];
   }
-  variable1 = ((typing___SubVariableContext___prev_t)CALL( self,COLOR_typing___SubVariableContext___prev))( self) /*SubVariableContext::prev*/;
-  variable1 = ((typing___VariableContext___stype_t)CALL(variable1,COLOR_typing___VariableContext___stype))(variable1,  variable0 /*v*/) /*VariableContext::stype*/;
-  goto return_label12;
-  return_label12: while(false);
-  tracehead = trace.prev;
-  return variable1;
-}
-void typing___SubVariableContext___with(val_t  self, val_t  param0, val_t  param1, val_t  param2, int* init_table) {
-  struct trace_t trace = {NULL, "typing::SubVariableContext::with (src/syntax//typing.nit:173,2--178:14)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 =  param2;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_SubVariableContext].i]) return;
-  ((typing___VariableContext___init_t)CALL( self,COLOR_typing___VariableContext___init))( self, init_table /*YYY*/) /*SubVariableContext::init*/;
-  ATTR_typing___SubVariableContext____prev( self) /*SubVariableContext::_prev*/ =  variable0 /*p*/;
-  ATTR_typing___SubVariableContext____variable( self) /*SubVariableContext::_variable*/ =  variable1 /*v*/;
-  ATTR_typing___SubVariableContext____var_type( self) /*SubVariableContext::_var_type*/ =  variable2 /*t*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_SubVariableContext].i] = 1;
+  /* Register variable[3]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_symbol___String___to_symbol(variable[3])(variable[3]) /*String::to_symbol*/;
+  /* Register variable[3]: Result */
+  variable[3] = NEW_ParamVariable_syntax_base___ParamVariable___init(variable[3], variable[0]) /*new ParamVariable*/;
+  CALL_typing___TypingVisitor___self_var__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::self_var=*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PClassdef___local_class(variable[0])(variable[0]) /*PClassdef::local_class*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMLocalClass___get_type(variable[4])(variable[4]) /*MMLocalClass::get_type*/;
+  CALL_syntax_base___Variable___stype__eq(variable[3])(variable[3], variable[4]) /*Variable::stype=*/;
+  CALL_SUPER_typing___PClassdef___accept_typing(variable[0])(variable[0], variable[1]) /*super PClassdef::accept_typing*/;
+  return_label29: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___PNode___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::PNode::accept_typing (src/syntax//typing.nit:186,2--189:16)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((syntax_base___PNode___accept_abs_syntax_visitor_t)CALL( self,COLOR_syntax_base___PNode___accept_abs_syntax_visitor))( self,  variable0 /*v*/) /*PNode::accept_abs_syntax_visitor*/;
-  ((typing___PNode___after_typing_t)CALL( self,COLOR_typing___PNode___after_typing))( self,  variable0 /*v*/) /*PNode::after_typing*/;
+void typing___AAttrPropdef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 158, LOCATE_typing___AAttrPropdef___accept_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___AAttrPropdef___accept_typing(variable[0])(variable[0], variable[1]) /*super AAttrPropdef::accept_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAttrPropdef___n_expr(variable[0])(variable[0]) /*AAttrPropdef::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___AAttrPropdef___n_expr(variable[0])(variable[0]) /*AAttrPropdef::n_expr*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AAttrPropdef___prop(variable[0])(variable[0]) /*AAttrPropdef::prop*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_static_type___MMLocalProperty___signature(variable[4])(variable[4]) /*MMLocalProperty::signature*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_static_type___MMSignature___return_type(variable[4])(variable[4]) /*MMSignature::return_type*/;
+    CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3], variable[4]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  }
+  return_label31: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___PNode___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::PNode::after_typing (src/syntax//typing.nit:191,2--43)"};
-  val_t variable0;
+val_t typing___AMethPropdef___self_var(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 168, LOCATE_typing___AMethPropdef___self_var};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
-  return;
+  return ATTR_typing___AMethPropdef____self_var( self) /*AMethPropdef::_self_var*/;
 }
-void typing___PClassdef___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::PClassdef::accept_typing (src/syntax//typing.nit:195,2--198:7)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___PClassdef___local_class_t)CALL( self,COLOR_syntax_base___PClassdef___local_class))( self) /*PClassdef::local_class*/;
-  variable1 = ((genericity___MMLocalClass___get_type_t)CALL(variable1,COLOR_static_type___MMLocalClass___get_type))(variable1) /*MMSrcLocalClass::get_type*/;
-  ((typing___TypingVisitor___self_type__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___self_type__eq))( variable0 /*v*/, variable1) /*TypingVisitor::self_type=*/;
-  ((typing___PClassdef___accept_typing_t)CALL( self,COLOR_SUPER_typing___PClassdef___accept_typing))( self,  param0) /*super PClassdef::accept_typing*/;
+void typing___AMethPropdef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 169, LOCATE_typing___AMethPropdef___accept_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = NEW_RootVariableContext_control_flow___RootVariableContext___init( variable[1] /*v*/, variable[0]) /*new RootVariableContext*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+  ATTR_typing___AMethPropdef____self_var(variable[0]) /*AMethPropdef::_self_var*/ = variable[3];
+  CALL_SUPER_typing___AMethPropdef___accept_typing(variable[0])(variable[0], variable[1]) /*super AMethPropdef::accept_typing*/;
+  return_label32: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AAttrPropdef___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAttrPropdef::accept_typing (src/syntax//typing.nit:203,2--207:67)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((typing___AAttrPropdef___accept_typing_t)CALL( self,COLOR_SUPER_typing___AAttrPropdef___accept_typing))( self,  param0) /*super AAttrPropdef::accept_typing*/;
-  variable1 = ((parser_nodes___AAttrPropdef___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrPropdef___n_expr))( self) /*AAttrPropdef::n_expr*/;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*PExpr::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((parser_nodes___AAttrPropdef___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrPropdef___n_expr))( self) /*AAttrPropdef::n_expr*/;
-    variable2 = ((parser_nodes___AAttrPropdef___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrPropdef___n_expr))( self) /*AAttrPropdef::n_expr*/;
-    variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-    variable3 = ((syntax_base___AAttrPropdef___prop_t)CALL( self,COLOR_syntax_base___AAttrPropdef___prop))( self) /*AAttrPropdef::prop*/;
-    variable3 = ((genericity___MMLocalProperty___signature_t)CALL(variable3,COLOR_static_type___MMLocalProperty___signature))(variable3) /*MMSrcAttribute::signature*/;
-    variable3 = ((static_type___MMSignature___return_type_t)CALL(variable3,COLOR_static_type___MMSignature___return_type))(variable3) /*MMSignature::return_type*/;
-    ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/, variable1, variable2, variable3) /*TypingVisitor::check_conform*/;
+void typing___AConcreteMethPropdef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 179, LOCATE_typing___AConcreteMethPropdef___accept_typing};
+    static val_t once_value_34 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___AConcreteMethPropdef___accept_typing(variable[0])(variable[0], variable[1]) /*super AConcreteMethPropdef::accept_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_control_flow___VariableContext___unreash(variable[3])(variable[3]) /*VariableContext::unreash*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3])==( TAG_Bool(false)));
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___AMethPropdef___method(variable[0])(variable[0]) /*AMethPropdef::method*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMLocalProperty___signature(variable[3])(variable[3]) /*MMLocalProperty::signature*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMSignature___return_type(variable[3])(variable[3]) /*MMSignature::return_type*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_34 != NIT_NULL) variable[3] = once_value_34;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Control error: Reached end of function (a 'return' with a value was expected)."), TAG_Int(78)) /*new String*/;
+      once_value_34 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
   }
+  return_label33: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AMethPropdef___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AMethPropdef::accept_typing (src/syntax//typing.nit:213,2--216:7)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = NEW_typing___VariableContext___init(); /*new VariableContext*/
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable1) /*TypingVisitor::variable_ctx=*/;
-  ((typing___AMethPropdef___accept_typing_t)CALL( self,COLOR_SUPER_typing___AMethPropdef___accept_typing))( self,  param0) /*super AMethPropdef::accept_typing*/;
+void typing___AConcreteInitPropdef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 191, LOCATE_typing___AConcreteInitPropdef___accept_typing};
+  val_t variable[14];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AConcreteMethPropdef___n_block(variable[0])(variable[0]) /*AConcreteMethPropdef::n_block*/;
+  CALL_typing___TypingVisitor___top_block__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::top_block=*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AConcreteInitPropdef___explicit_super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::explicit_super_init_calls*/;
+  CALL_typing___TypingVisitor___explicit_super_init_calls__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::explicit_super_init_calls=*/;
+  CALL_typing___TypingVisitor___explicit_other_init_call__eq( variable[1] /*v*/)( variable[1] /*v*/,  TAG_Bool(false)) /*TypingVisitor::explicit_other_init_call=*/;
+  CALL_SUPER_typing___AConcreteInitPropdef___accept_typing(variable[0])(variable[0], variable[1]) /*super AConcreteInitPropdef::accept_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___explicit_other_init_call( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::explicit_other_init_call*/;
+  /* Ensure var variable[3]: Left 'or' operand*/
+  if (!UNTAG_Bool(variable[3])) { /* or */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___AMethPropdef___method(variable[0])(variable[0]) /*AMethPropdef::method*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_abstractmetamodel___MMLocalProperty___global(variable[3])(variable[3]) /*MMLocalProperty::global*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_abstractmetamodel___MMGlobalProperty___intro(variable[3])(variable[3]) /*MMGlobalProperty::intro*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AMethPropdef___method(variable[0])(variable[0]) /*AMethPropdef::method*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] == variable[4]) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3],variable[4])):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3], variable[4]) /*Object::==*/)))))));
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+  } else { /*if*/
+    /* Register variable[3]: Local variable */
+    variable[3] =  TAG_Int(0);
+    /* Register variable[4]: Local variable */
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___AConcreteInitPropdef___explicit_super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::explicit_super_init_calls*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_abstract_collection___Collection___length(variable[5])(variable[5]) /*AbstractArrayRead::length*/;
+    variable[4] = variable[5];
+    /* Register variable[5]: Local variable */
+    variable[5] =  NIT_NULL /*null*/;
+    /* Register variable[6]: Local variable */
+    variable[6] =  NIT_NULL /*null*/;
+    /* Register variable[7]: Result */
+    variable[7] = TAG_Bool(UNTAG_Int( variable[3] /*i*/)<UNTAG_Int( variable[4] /*l*/));
+    if (UNTAG_Bool(variable[7])) { /*if*/
+      /* Register variable[7]: Result */
+      variable[7] = CALL_typing___AConcreteInitPropdef___explicit_super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::explicit_super_init_calls*/;
+      /* Register variable[8]: Local variable */
+      variable[8] = variable[7];
+      /* Register variable[9]: Local variable */
+      variable[9] =  variable[3] /*i*/;
+      /* Register variable[10]: Method return value and escape marker */
+      /* Register variable[11]: Result */
+      variable[11] = TAG_Bool(UNTAG_Int( variable[9] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+      /* Ensure var variable[11]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[11])) { /* and */
+        /* Register variable[11]: Result */
+        variable[11] = ATTR_array___AbstractArrayRead____length(variable[8]) /*AbstractArrayRead::_length*/;
+        /* Register variable[11]: Result */
+        variable[11] = TAG_Bool(UNTAG_Int( variable[9] /*index*/)<UNTAG_Int(variable[11]));
+      }
+      /* Register variable[11]: Result */
+      if (!UNTAG_Bool(variable[11])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+      /* Register variable[11]: Result */
+      variable[11] = ATTR_array___Array____items(variable[8]) /*Array::_items*/;
+      /* Register variable[11]: Result */
+      variable[11] = UNBOX_NativeArray(variable[11])[UNTAG_Int( variable[9] /*index*/)];
+      variable[10] = variable[11];
+      goto return_label36;
+      return_label36: while(false);
+      /* Register variable[7]: Result */
+      variable[7] = variable[10];
+      variable[5] = variable[7] /*cur_m=*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_abstractmetamodel___MMLocalProperty___global( variable[5] /*cur_m*/)( variable[5] /*cur_m*/) /*MMLocalProperty::global*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_abstractmetamodel___MMGlobalProperty___intro(variable[7])(variable[7]) /*MMGlobalProperty::intro*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_abstractmetamodel___MMLocalProperty___local_class(variable[7])(variable[7]) /*MMLocalProperty::local_class*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_abstractmetamodel___MMLocalClass___for_module(variable[7])(variable[7], variable[8]) /*MMLocalClass::for_module*/;
+      variable[6] = variable[7] /*cur_c=*/;
+    }
+    /* Register variable[7]: Local variable */
+    variable[7] =  TAG_Int(0);
+    while (true) { /*while*/
+      /* Register variable[8]: Result */
+      variable[8] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_abstractmetamodel___MMLocalClass___cshe(variable[8])(variable[8]) /*MMLocalClass::cshe*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_partial_order___PartialOrderElement___direct_greaters(variable[8])(variable[8]) /*PartialOrderElement::direct_greaters*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_abstract_collection___Collection___length(variable[8])(variable[8]) /*AbstractArrayRead::length*/;
+      /* Register variable[8]: Result */
+      variable[8] = TAG_Bool(UNTAG_Int( variable[7] /*j*/)<UNTAG_Int(variable[8]));
+      if (!UNTAG_Bool(variable[8])) break; /* while*/
+      /* Register variable[8]: Local variable */
+      /* Register variable[9]: Result */
+      variable[9] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstractmetamodel___MMLocalClass___cshe(variable[9])(variable[9]) /*MMLocalClass::cshe*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_partial_order___PartialOrderElement___direct_greaters(variable[9])(variable[9]) /*PartialOrderElement::direct_greaters*/;
+      /* Register variable[10]: Local variable */
+      variable[10] = variable[9];
+      /* Register variable[11]: Local variable */
+      variable[11] =  variable[7] /*j*/;
+      /* Register variable[12]: Method return value and escape marker */
+      /* Register variable[13]: Result */
+      variable[13] = TAG_Bool(UNTAG_Int( variable[11] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+      /* Ensure var variable[13]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[13])) { /* and */
+        /* Register variable[13]: Result */
+        variable[13] = ATTR_array___AbstractArrayRead____length(variable[10]) /*AbstractArrayRead::_length*/;
+        /* Register variable[13]: Result */
+        variable[13] = TAG_Bool(UNTAG_Int( variable[11] /*index*/)<UNTAG_Int(variable[13]));
+      }
+      /* Register variable[13]: Result */
+      if (!UNTAG_Bool(variable[13])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+      /* Register variable[13]: Result */
+      variable[13] = ATTR_array___Array____items(variable[10]) /*Array::_items*/;
+      /* Register variable[13]: Result */
+      variable[13] = UNBOX_NativeArray(variable[13])[UNTAG_Int( variable[11] /*index*/)];
+      variable[12] = variable[13];
+      goto return_label38;
+      return_label38: while(false);
+      /* Register variable[9]: Result */
+      variable[9] = variable[12];
+      variable[8] = variable[9];
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstractmetamodel___MMLocalClass___global( variable[8] /*c*/)( variable[8] /*c*/) /*MMLocalClass::global*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstractmetamodel___MMGlobalClass___is_interface(variable[9])(variable[9]) /*MMGlobalClass::is_interface*/;
+      /* Ensure var variable[9]: Left 'or' operand*/
+      if (!UNTAG_Bool(variable[9])) { /* or */
+        /* Register variable[9]: Result */
+        variable[9] = CALL_abstractmetamodel___MMLocalClass___global( variable[8] /*c*/)( variable[8] /*c*/) /*MMLocalClass::global*/;
+        /* Register variable[9]: Result */
+        variable[9] = CALL_abstractmetamodel___MMGlobalClass___is_universal(variable[9])(variable[9]) /*MMGlobalClass::is_universal*/;
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: Left 'or' operand*/
+      if (!UNTAG_Bool(variable[9])) { /* or */
+        /* Register variable[9]: Result */
+        variable[9] = CALL_abstractmetamodel___MMLocalClass___global( variable[8] /*c*/)( variable[8] /*c*/) /*MMLocalClass::global*/;
+        /* Register variable[9]: Result */
+        variable[9] = CALL_abstractmetamodel___MMGlobalClass___is_mixin(variable[9])(variable[9]) /*MMGlobalClass::is_mixin*/;
+      }
+      /* Register variable[9]: Result */
+      if (UNTAG_Bool(variable[9])) { /*if*/
+        variable[7] = TAG_Int(UNTAG_Int(variable[7])+UNTAG_Int( TAG_Int(1))) /*j*/;
+      } else { /*if*/
+        /* Register variable[9]: Result */
+        variable[9] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[6] /*cur_c*/ ==  NIT_NULL /*null*/) || (( variable[6] /*cur_c*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[6] /*cur_c*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[6] /*cur_c*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[6] /*cur_c*/)( variable[6] /*cur_c*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+        /* Ensure var variable[9]: Left 'and' operand*/
+        if (UNTAG_Bool(variable[9])) { /* and */
+          /* Register variable[9]: Result */
+          variable[9] = CALL_abstractmetamodel___MMLocalClass___cshe( variable[8] /*c*/)( variable[8] /*c*/) /*MMLocalClass::cshe*/;
+          /* Register variable[9]: Result */
+          variable[9] = CALL_partial_order___PartialOrderElement_____leq(variable[9])(variable[9],  variable[6] /*cur_c*/) /*PartialOrderElement::<=*/;
+          /* Ensure var variable[9]: Left 'or' operand*/
+          if (!UNTAG_Bool(variable[9])) { /* or */
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMLocalClass___global( variable[6] /*cur_c*/)( variable[6] /*cur_c*/) /*MMLocalClass::global*/;
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMGlobalClass___is_mixin(variable[9])(variable[9]) /*MMGlobalClass::is_mixin*/;
+          }
+          /* Register variable[9]: Result */
+        }
+        /* Register variable[9]: Result */
+        if (UNTAG_Bool(variable[9])) { /*if*/
+          /* Register variable[9]: Result */
+          variable[9] = TAG_Bool(( variable[8] /*c*/ ==  variable[6] /*cur_c*/) || (( variable[8] /*c*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[8] /*c*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[8] /*c*/, variable[6] /*cur_c*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[8] /*c*/)( variable[8] /*c*/,  variable[6] /*cur_c*/) /*Object::==*/)))));
+          if (UNTAG_Bool(variable[9])) { /*if*/
+            variable[7] = TAG_Int(UNTAG_Int(variable[7])+UNTAG_Int( TAG_Int(1))) /*j*/;
+          }
+          /* Register variable[9]: Result */
+          variable[9] = CALL_typing___AConcreteInitPropdef___super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::super_init_calls*/;
+          CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9],  variable[5] /*cur_m*/) /*AbstractArray::add*/;
+          variable[3] = TAG_Int(UNTAG_Int(variable[3])+UNTAG_Int( TAG_Int(1))) /*i*/;
+          /* Register variable[9]: Result */
+          variable[9] = TAG_Bool(UNTAG_Int( variable[3] /*i*/)<UNTAG_Int( variable[4] /*l*/));
+          if (UNTAG_Bool(variable[9])) { /*if*/
+            /* Register variable[9]: Result */
+            variable[9] = CALL_typing___AConcreteInitPropdef___explicit_super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::explicit_super_init_calls*/;
+            /* Register variable[10]: Local variable */
+            variable[10] = variable[9];
+            /* Register variable[11]: Local variable */
+            variable[11] =  variable[3] /*i*/;
+            /* Register variable[12]: Method return value and escape marker */
+            /* Register variable[13]: Result */
+            variable[13] = TAG_Bool(UNTAG_Int( variable[11] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+            /* Ensure var variable[13]: Left 'and' operand*/
+            if (UNTAG_Bool(variable[13])) { /* and */
+              /* Register variable[13]: Result */
+              variable[13] = ATTR_array___AbstractArrayRead____length(variable[10]) /*AbstractArrayRead::_length*/;
+              /* Register variable[13]: Result */
+              variable[13] = TAG_Bool(UNTAG_Int( variable[11] /*index*/)<UNTAG_Int(variable[13]));
+            }
+            /* Register variable[13]: Result */
+            if (!UNTAG_Bool(variable[13])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+            /* Register variable[13]: Result */
+            variable[13] = ATTR_array___Array____items(variable[10]) /*Array::_items*/;
+            /* Register variable[13]: Result */
+            variable[13] = UNBOX_NativeArray(variable[13])[UNTAG_Int( variable[11] /*index*/)];
+            variable[12] = variable[13];
+            goto return_label39;
+            return_label39: while(false);
+            /* Register variable[9]: Result */
+            variable[9] = variable[12];
+            variable[5] = variable[9] /*cur_m=*/;
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMLocalProperty___global( variable[5] /*cur_m*/)( variable[5] /*cur_m*/) /*MMLocalProperty::global*/;
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMGlobalProperty___intro(variable[9])(variable[9]) /*MMGlobalProperty::intro*/;
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMLocalProperty___local_class(variable[9])(variable[9]) /*MMLocalProperty::local_class*/;
+            /* Register variable[10]: Result */
+            variable[10] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+            /* Register variable[9]: Result */
+            variable[9] = CALL_abstractmetamodel___MMLocalClass___for_module(variable[9])(variable[9], variable[10]) /*MMLocalClass::for_module*/;
+            variable[6] = variable[9] /*cur_c=*/;
+          } else { /*if*/
+            variable[5] =  NIT_NULL /*null*/ /*cur_m=*/;
+            variable[6] =  NIT_NULL /*null*/ /*cur_c=*/;
+          }
+        } else { /*if*/
+          /* Register variable[9]: Local variable */
+          /* Register variable[10]: Result */
+          variable[10] = CALL_syntax_base___AMethPropdef___method(variable[0])(variable[0]) /*AMethPropdef::method*/;
+          /* Register variable[10]: Result */
+          variable[10] = CALL_typing___TypingVisitor___get_default_constructor_for( variable[1] /*v*/)( variable[1] /*v*/, variable[0],  variable[8] /*c*/, variable[10]) /*TypingVisitor::get_default_constructor_for*/;
+          variable[9] = variable[10];
+          /* Register variable[10]: Result */
+          variable[10] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[9] /*p*/ ==  NIT_NULL /*null*/) || (( variable[9] /*p*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[9] /*p*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[9] /*p*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[9] /*p*/)( variable[9] /*p*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+          if (UNTAG_Bool(variable[10])) { /*if*/
+            /* Register variable[10]: Result */
+            variable[10] = CALL_typing___AConcreteInitPropdef___super_init_calls(variable[0])(variable[0]) /*AConcreteInitPropdef::super_init_calls*/;
+            CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10],  variable[9] /*p*/) /*AbstractArray::add*/;
+          }
+          variable[7] = TAG_Int(UNTAG_Int(variable[7])+UNTAG_Int( TAG_Int(1))) /*j*/;
+        }
+      }
+      continue_37: while(0);
+    }
+    break_37: while(0);
+  }
+  return_label35: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___AConcreteInitPropdef___super_init_calls(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AConcreteInitPropdef::super_init_calls (src/syntax//typing.nit:221,2--70)"};
+  struct trace_t trace = {NULL, NULL, 189, LOCATE_typing___AConcreteInitPropdef___super_init_calls};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___AConcreteInitPropdef____super_init_calls( self) /*AConcreteInitPropdef::_super_init_calls*/;
 }
 val_t typing___AConcreteInitPropdef___explicit_super_init_calls(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AConcreteInitPropdef::explicit_super_init_calls (src/syntax//typing.nit:222,2--79)"};
+  struct trace_t trace = {NULL, NULL, 190, LOCATE_typing___AConcreteInitPropdef___explicit_super_init_calls};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___AConcreteInitPropdef____explicit_super_init_calls( self) /*AConcreteInitPropdef::_explicit_super_init_calls*/;
 }
-void typing___AConcreteInitPropdef___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AConcreteInitPropdef::accept_typing (src/syntax//typing.nit:223,2--259:11)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-    val_t variable4;
-    val_t variable5;
-      val_t variable6;
-      val_t variable7;
-      val_t variable8;
-      val_t variable9;
-      val_t variable10;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AConcreteMethPropdef___n_block_t)CALL( self,COLOR_parser_nodes___AConcreteMethPropdef___n_block))( self) /*AConcreteInitPropdef::n_block*/;
-  ((typing___TypingVisitor___top_block__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___top_block__eq))( variable0 /*v*/, variable1) /*TypingVisitor::top_block=*/;
-  variable1 = ((typing___AConcreteInitPropdef___explicit_super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___explicit_super_init_calls))( self) /*AConcreteInitPropdef::explicit_super_init_calls*/;
-  ((typing___TypingVisitor___explicit_super_init_calls__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_super_init_calls__eq))( variable0 /*v*/, variable1) /*TypingVisitor::explicit_super_init_calls=*/;
-  ((typing___TypingVisitor___explicit_other_init_call__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_other_init_call__eq))( variable0 /*v*/,  TAG_Bool(false)) /*TypingVisitor::explicit_other_init_call=*/;
-  ((typing___AConcreteInitPropdef___accept_typing_t)CALL( self,COLOR_SUPER_typing___AConcreteInitPropdef___accept_typing))( self,  param0) /*super AConcreteInitPropdef::accept_typing*/;
-  variable1 = ((typing___TypingVisitor___explicit_other_init_call_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_other_init_call))( variable0 /*v*/) /*TypingVisitor::explicit_other_init_call*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-  } else { /*if*/
-    variable1 =  TAG_Int(0);
-    variable3 = ((typing___AConcreteInitPropdef___explicit_super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___explicit_super_init_calls))( self) /*AConcreteInitPropdef::explicit_super_init_calls*/;
-    variable3 = ((array___AbstractArray___length_t)CALL(variable3,COLOR_abstract_collection___Collection___length))(variable3) /*Array::length*/;
-    variable2 = variable3;
-    variable3 = NIT_NULL /*decl variable cur_m*/;
-    variable4 = NIT_NULL /*decl variable cur_c*/;
-    variable5 = TAG_Bool(UNTAG_Int( variable1 /*i*/)<UNTAG_Int( variable2 /*l*/));
-    if (UNTAG_Bool(variable5)) { /*if*/
-      variable5 = ((typing___AConcreteInitPropdef___explicit_super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___explicit_super_init_calls))( self) /*AConcreteInitPropdef::explicit_super_init_calls*/;
-      variable6 =  variable1 /*i*/;
-      variable7 = TAG_Bool(UNTAG_Int( variable6 /*index*/)>=UNTAG_Int( TAG_Int(0)));
-      variable8 = variable7;
-      if (UNTAG_Bool(variable8)) { /* and */
-        variable8 = variable5;
-        variable8 = ATTR_array___AbstractArray____length(variable8) /*Array::_length*/;
-        variable8 = TAG_Bool(UNTAG_Int( variable6 /*index*/)<UNTAG_Int(variable8));
-      }
-      variable7 = variable8;
-      if (!UNTAG_Bool(variable7)) { fprintf(stderr, "Assert 'index'  failed: bin/../lib/standard//array.nit:229,3--46\n"); nit_exit(1);}
-      variable7 = variable5;
-      variable7 = ATTR_array___Array____items(variable7) /*Array::_items*/;
-      variable7 = UNBOX_NativeArray(variable7)[UNTAG_Int( variable6 /*index*/)];
-      goto return_label20;
-      return_label20: while(false);
-      variable5 = variable7;
-      variable3 = variable5 /*cur_m=*/;
-      variable5 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable3 /*cur_m*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable3 /*cur_m*/) /*MMMethod::global*/;
-      variable5 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL(variable5,COLOR_abstractmetamodel___MMGlobalProperty___intro))(variable5) /*MMGlobalProperty::intro*/;
-      variable5 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL(variable5,COLOR_abstractmetamodel___MMLocalProperty___local_class))(variable5) /*MMConcreteProperty::local_class*/;
-      variable4 = variable5 /*cur_c=*/;
-    }
-    variable5 =  TAG_Int(0);
-    while (true) { /*while*/
-      variable6 = ((syntax_base___AbsSyntaxVisitor___local_class_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_class))( variable0 /*v*/) /*TypingVisitor::local_class*/;
-      variable6 = ((abstractmetamodel___MMLocalClass___cshe_t)CALL(variable6,COLOR_abstractmetamodel___MMLocalClass___cshe))(variable6) /*MMSrcLocalClass::cshe*/;
-      variable6 = ((partial_order___PartialOrderElement___direct_greaters_t)CALL(variable6,COLOR_partial_order___PartialOrderElement___direct_greaters))(variable6) /*PartialOrderElement::direct_greaters*/;
-      variable6 = ((array___AbstractArray___length_t)CALL(variable6,COLOR_abstract_collection___Collection___length))(variable6) /*Array::length*/;
-      variable6 = TAG_Bool(UNTAG_Int( variable5 /*j*/)<UNTAG_Int(variable6));
-      if (!UNTAG_Bool(variable6)) break; /* while*/
-      variable7 = ((syntax_base___AbsSyntaxVisitor___local_class_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_class))( variable0 /*v*/) /*TypingVisitor::local_class*/;
-      variable7 = ((abstractmetamodel___MMLocalClass___cshe_t)CALL(variable7,COLOR_abstractmetamodel___MMLocalClass___cshe))(variable7) /*MMSrcLocalClass::cshe*/;
-      variable7 = ((partial_order___PartialOrderElement___direct_greaters_t)CALL(variable7,COLOR_partial_order___PartialOrderElement___direct_greaters))(variable7) /*PartialOrderElement::direct_greaters*/;
-      variable8 =  variable5 /*j*/;
-      variable9 = TAG_Bool(UNTAG_Int( variable8 /*index*/)>=UNTAG_Int( TAG_Int(0)));
-      variable10 = variable9;
-      if (UNTAG_Bool(variable10)) { /* and */
-        variable10 = variable7;
-        variable10 = ATTR_array___AbstractArray____length(variable10) /*Array::_length*/;
-        variable10 = TAG_Bool(UNTAG_Int( variable8 /*index*/)<UNTAG_Int(variable10));
-      }
-      variable9 = variable10;
-      if (!UNTAG_Bool(variable9)) { fprintf(stderr, "Assert 'index'  failed: bin/../lib/standard//array.nit:229,3--46\n"); nit_exit(1);}
-      variable9 = variable7;
-      variable9 = ATTR_array___Array____items(variable9) /*Array::_items*/;
-      variable9 = UNBOX_NativeArray(variable9)[UNTAG_Int( variable8 /*index*/)];
-      goto return_label22;
-      return_label22: while(false);
-      variable7 = variable9;
-      variable6 = variable7;
-      variable7 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable4 /*cur_c*/ ==  NIT_NULL /*null*/) || (( variable4 /*cur_c*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable4 /*cur_c*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable4 /*cur_c*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable4 /*cur_c*/,COLOR_kernel___Object_____eqeq))( variable4 /*cur_c*/,  NIT_NULL /*null*/) /*MMLocalClass::==*/)))))));
-      variable8 = variable7;
-      if (UNTAG_Bool(variable8)) { /* and */
-        variable8 = ((abstractmetamodel___MMLocalClass___cshe_t)CALL( variable6 /*c*/,COLOR_abstractmetamodel___MMLocalClass___cshe))( variable6 /*c*/) /*MMLocalClass::cshe*/;
-        variable8 = ((partial_order___PartialOrderElement_____leq_t)CALL(variable8,COLOR_partial_order___PartialOrderElement_____leq))(variable8,  variable4 /*cur_c*/) /*PartialOrderElement::<=*/;
-      }
-      variable7 = variable8;
-      if (UNTAG_Bool(variable7)) { /*if*/
-        variable7 = TAG_Bool(( variable6 /*c*/ ==  variable4 /*cur_c*/) || (( variable6 /*c*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable6 /*c*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable6 /*c*/, variable4 /*cur_c*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable6 /*c*/,COLOR_kernel___Object_____eqeq))( variable6 /*c*/,  variable4 /*cur_c*/) /*MMLocalClass::==*/)))));
-        if (UNTAG_Bool(variable7)) { /*if*/
-          variable5 = TAG_Int(UNTAG_Int(variable5)+UNTAG_Int( TAG_Int(1))) /*j*/;
-        }
-        variable7 = ((typing___AConcreteInitPropdef___super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___super_init_calls))( self) /*AConcreteInitPropdef::super_init_calls*/;
-        ((array___AbstractArray___add_t)CALL(variable7,COLOR_abstract_collection___SimpleCollection___add))(variable7,  variable3 /*cur_m*/) /*Array::add*/;
-        variable1 = TAG_Int(UNTAG_Int(variable1)+UNTAG_Int( TAG_Int(1))) /*i*/;
-        variable7 = TAG_Bool(UNTAG_Int( variable1 /*i*/)<UNTAG_Int( variable2 /*l*/));
-        if (UNTAG_Bool(variable7)) { /*if*/
-          variable7 = ((typing___AConcreteInitPropdef___explicit_super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___explicit_super_init_calls))( self) /*AConcreteInitPropdef::explicit_super_init_calls*/;
-          variable8 =  variable1 /*i*/;
-          variable9 = TAG_Bool(UNTAG_Int( variable8 /*index*/)>=UNTAG_Int( TAG_Int(0)));
-          variable10 = variable9;
-          if (UNTAG_Bool(variable10)) { /* and */
-            variable10 = variable7;
-            variable10 = ATTR_array___AbstractArray____length(variable10) /*Array::_length*/;
-            variable10 = TAG_Bool(UNTAG_Int( variable8 /*index*/)<UNTAG_Int(variable10));
-          }
-          variable9 = variable10;
-          if (!UNTAG_Bool(variable9)) { fprintf(stderr, "Assert 'index'  failed: bin/../lib/standard//array.nit:229,3--46\n"); nit_exit(1);}
-          variable9 = variable7;
-          variable9 = ATTR_array___Array____items(variable9) /*Array::_items*/;
-          variable9 = UNBOX_NativeArray(variable9)[UNTAG_Int( variable8 /*index*/)];
-          goto return_label23;
-          return_label23: while(false);
-          variable7 = variable9;
-          variable3 = variable7 /*cur_m=*/;
-          variable7 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable3 /*cur_m*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable3 /*cur_m*/) /*MMMethod::global*/;
-          variable7 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL(variable7,COLOR_abstractmetamodel___MMGlobalProperty___intro))(variable7) /*MMGlobalProperty::intro*/;
-          variable7 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL(variable7,COLOR_abstractmetamodel___MMLocalProperty___local_class))(variable7) /*MMConcreteProperty::local_class*/;
-          variable4 = variable7 /*cur_c=*/;
-        } else { /*if*/
-          variable3 =  NIT_NULL /*null*/ /*cur_m=*/;
-          variable4 =  NIT_NULL /*null*/ /*cur_c=*/;
+void typing___PParam___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 237, LOCATE_typing___PParam___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___PParam___variable(variable[0])(variable[0]) /*PParam::variable*/;
+    CALL_control_flow___VariableContext___add(variable[3])(variable[3], variable[4]) /*VariableContext::add*/;
+  }
+  return_label40: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AClosureDecl___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 250, LOCATE_typing___AClosureDecl___accept_typing};
+        static val_t once_value_42 = NIT_NULL; /* Once value for string variable[5]*/
+          static val_t once_value_43 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PClosureDecl___variable(variable[0])(variable[0]) /*PClosureDecl::variable*/;
+  CALL_control_flow___VariableContext___add(variable[3])(variable[3], variable[4]) /*VariableContext::add*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_control_flow___VariableContext___sub(variable[5])(variable[5], variable[0]) /*VariableContext::sub*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___PClosureDecl___variable(variable[0])(variable[0]) /*PClosureDecl::variable*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___ClosureVariable___closure(variable[5])(variable[5]) /*ClosureVariable::closure*/;
+  /* Register variable[5]: Result */
+  variable[5] = NEW_EscapableClosure_escape___EscapableClosure___init(variable[0], variable[5],  NIT_NULL /*null*/) /*new EscapableClosure*/;
+  ATTR_typing___AClosureDecl____escapable(variable[0]) /*AClosureDecl::_escapable*/ = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  /* Register variable[6]: Result */
+  variable[6] = ATTR_typing___AClosureDecl____escapable(variable[0]) /*AClosureDecl::_escapable*/;
+  CALL_escape___EscapableContext___push(variable[5])(variable[5], variable[6]) /*EscapableContext::push*/;
+  CALL_SUPER_typing___AClosureDecl___accept_typing(variable[0])(variable[0], variable[1]) /*super AClosureDecl::accept_typing*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AClosureDecl___n_expr(variable[0])(variable[0]) /*AClosureDecl::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext___unreash(variable[5])(variable[5]) /*VariableContext::unreash*/;
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool((variable[5])==( TAG_Bool(false)));
+    if (UNTAG_Bool(variable[5])) { /*if*/
+      /* Register variable[5]: Result */
+      variable[5] = CALL_syntax_base___PClosureDecl___variable(variable[0])(variable[0]) /*PClosureDecl::variable*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_syntax_base___ClosureVariable___closure(variable[5])(variable[5]) /*ClosureVariable::closure*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_static_type___MMClosure___signature(variable[5])(variable[5]) /*MMClosure::signature*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_static_type___MMSignature___return_type(variable[5])(variable[5]) /*MMSignature::return_type*/;
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+      if (UNTAG_Bool(variable[5])) { /*if*/
+        /* Register variable[5]: Once String constant */
+        if (once_value_42 != NIT_NULL) variable[5] = once_value_42;
+        else {
+          variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Control error: Reached end of block (a 'continue' with a value was expected)."), TAG_Int(77)) /*new String*/;
+          once_value_42 = variable[5];
         }
+        /* Register variable[5]: Result */
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
       } else { /*if*/
-        variable8 = ((syntax_base___AMethPropdef___method_t)CALL( self,COLOR_syntax_base___AMethPropdef___method))( self) /*AConcreteInitPropdef::method*/;
-        variable8 = ((typing___TypingVisitor___get_default_constructor_for_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___get_default_constructor_for))( variable0 /*v*/,  self,  variable6 /*c*/, variable8) /*TypingVisitor::get_default_constructor_for*/;
-        variable7 = variable8;
-        variable8 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable7 /*p*/ ==  NIT_NULL /*null*/) || (( variable7 /*p*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable7 /*p*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable7 /*p*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable7 /*p*/,COLOR_kernel___Object_____eqeq))( variable7 /*p*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))))));
-        if (UNTAG_Bool(variable8)) { /*if*/
-          variable8 = ((typing___AConcreteInitPropdef___super_init_calls_t)CALL( self,COLOR_typing___AConcreteInitPropdef___super_init_calls))( self) /*AConcreteInitPropdef::super_init_calls*/;
-          ((array___AbstractArray___add_t)CALL(variable8,COLOR_abstract_collection___SimpleCollection___add))(variable8,  variable7 /*p*/) /*Array::add*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_syntax_base___PClosureDecl___variable(variable[0])(variable[0]) /*PClosureDecl::variable*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_syntax_base___ClosureVariable___closure(variable[5])(variable[5]) /*ClosureVariable::closure*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_static_type___MMClosure___is_break(variable[5])(variable[5]) /*MMClosure::is_break*/;
+        if (UNTAG_Bool(variable[5])) { /*if*/
+          /* Register variable[5]: Once String constant */
+          if (once_value_43 != NIT_NULL) variable[5] = once_value_43;
+          else {
+            variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Control error: Reached end of break block (an 'abort' was expected)."), TAG_Int(68)) /*new String*/;
+            once_value_43 = variable[5];
+          }
+          /* Register variable[5]: Result */
+          CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
         }
-        variable5 = TAG_Int(UNTAG_Int(variable5)+UNTAG_Int( TAG_Int(1))) /*j*/;
       }
-      continue_21: while(0);
     }
-    break_21: while(0);
   }
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___merge( variable[3] /*old_var_ctx*/)( variable[3] /*old_var_ctx*/, variable[5]) /*VariableContext::merge*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[4] /*old_base_var_ctx*/) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  CALL_escape___EscapableContext___pop(variable[5])(variable[5]) /*EscapableContext::pop*/;
+  return_label41: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___PParam___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::PParam::after_typing (src/syntax//typing.nit:267,2--270:30)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
+val_t typing___AClosureDecl___escapable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 247, LOCATE_typing___AClosureDecl___escapable};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-    variable2 = ((syntax_base___PParam___variable_t)CALL( self,COLOR_syntax_base___PParam___variable))( self) /*PParam::variable*/;
-    ((typing___VariableContext___add_t)CALL(variable1,COLOR_typing___VariableContext___add))(variable1, variable2) /*VariableContext::add*/;
-  }
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AClosureDecl____escapable( self) /*AClosureDecl::_escapable*/;
+}
+void typing___PType___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 284, LOCATE_typing___PType___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PType___get_stype(variable[0])(variable[0],  variable[1] /*v*/) /*PType::get_stype*/;
+  ATTR_typing___PType____stype(variable[0]) /*PType::_stype*/ = variable[3];
+  return_label44: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___PType___stype(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PType::stype (src/syntax//typing.nit:276,2--29)"};
+  struct trace_t trace = {NULL, NULL, 283, LOCATE_typing___PType___stype};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___PType____stype( self) /*PType::_stype*/;
 }
-void typing___PType___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::PType::after_typing (src/syntax//typing.nit:277,2--279:22)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___PType___get_stype_t)CALL( self,COLOR_syntax_base___PType___get_stype))( self,  variable0 /*v*/) /*PType::get_stype*/;
-  ATTR_typing___PType____stype( self) /*PType::_stype*/ = variable1;
+val_t typing___PExpr___is_typed(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 291, LOCATE_typing___PExpr___is_typed};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___PExpr____is_typed( self) /*PExpr::_is_typed*/;
+}
+val_t typing___PExpr___is_statement(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 292, LOCATE_typing___PExpr___is_statement};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[2]: Result */
+  variable[2] = TAG_Bool((variable[2] ==  NIT_NULL /*null*/) || ((variable[2] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[2])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[2], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[2])(variable[2],  NIT_NULL /*null*/) /*Object::==*/)))));
+  variable[1] = variable[2];
+  goto return_label45;
+  return_label45: while(false);
   tracehead = trace.prev;
-  return;
+  return variable[1];
 }
 val_t typing___PExpr___stype(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PExpr::stype (src/syntax//typing.nit:284,2--35)"};
-  trace.prev = tracehead; tracehead = &trace;
+  struct trace_t trace = {NULL, NULL, 293, LOCATE_typing___PExpr___stype};
+    static val_t once_value_47 = NIT_NULL; /* Once value for string variable[3]*/
+    static val_t once_value_48 = NIT_NULL; /* Once value for string variable[3]*/
+    static val_t once_value_49 = NIT_NULL; /* Once value for string variable[3]*/
+    static val_t once_value_50 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___PExpr___is_typed(variable[0])(variable[0]) /*PExpr::is_typed*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[2])))) { /*if*/
+    variable[2] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[3]: Once String constant */
+    if (once_value_47 != NIT_NULL) variable[3] = once_value_47;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_47 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_prod___PNode___locate(variable[0])(variable[0]) /*Prod::locate*/;
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[3]: Once String constant */
+    if (once_value_48 != NIT_NULL) variable[3] = once_value_48;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString(": not is_typed"), TAG_Int(14)) /*new String*/;
+      once_value_48 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[2]: Result */
+    variable[2] = CALL_string___Object___to_s(variable[2])(variable[2]) /*Object::to_s*/;
+    CALL_file___Object___print(variable[0])(variable[0], variable[2]) /*Object::print*/;
+    fprintf(stderr, "Aborted"); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___PExpr___stype, LOCATE_typing, 297); nit_exit(1);
+  }
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___PExpr___is_statement(variable[0])(variable[0]) /*PExpr::is_statement*/;
+  if (UNTAG_Bool(variable[2])) { /*if*/
+    variable[2] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[3]: Once String constant */
+    if (once_value_49 != NIT_NULL) variable[3] = once_value_49;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_49 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_prod___PNode___locate(variable[0])(variable[0]) /*Prod::locate*/;
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[3]: Once String constant */
+    if (once_value_50 != NIT_NULL) variable[3] = once_value_50;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString(": is_statement"), TAG_Int(14)) /*new String*/;
+      once_value_50 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    /* Ensure var variable[3]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+    /* Register variable[2]: Result */
+    variable[2] = CALL_string___Object___to_s(variable[2])(variable[2]) /*Object::to_s*/;
+    CALL_file___Object___print(variable[0])(variable[0], variable[2]) /*Object::print*/;
+    fprintf(stderr, "Aborted"); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___PExpr___stype, LOCATE_typing, 301); nit_exit(1);
+  }
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  variable[1] = variable[2];
+  goto return_label46;
+  return_label46: while(false);
   tracehead = trace.prev;
-  return ATTR_typing___PExpr____stype( self) /*PExpr::_stype*/;
+  return variable[1];
 }
 val_t typing___PExpr___is_implicit_self(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PExpr::is_implicit_self (src/syntax//typing.nit:286,2--287:44)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(false);
-  goto return_label26;
-  return_label26: while(false);
+  struct trace_t trace = {NULL, NULL, 307, LOCATE_typing___PExpr___is_implicit_self};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Bool(false);
+  goto return_label51;
+  return_label51: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___PExpr___is_self(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PExpr::is_self (src/syntax//typing.nit:289,2--290:35)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(false);
-  goto return_label27;
-  return_label27: while(false);
-  tracehead = trace.prev;
-  return variable0;
-}
-val_t typing___PExpr___is_variable(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PExpr::is_variable (src/syntax//typing.nit:292,2--293:39)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(false);
-  goto return_label28;
-  return_label28: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 310, LOCATE_typing___PExpr___is_self};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Bool(false);
+  goto return_label52;
+  return_label52: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+val_t typing___PExpr___its_variable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 313, LOCATE_typing___PExpr___its_variable};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  NIT_NULL /*null*/;
+  goto return_label53;
+  return_label53: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___PExpr___if_true_variable_ctx(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PExpr::if_true_variable_ctx (src/syntax//typing.nit:295,2--296:61)"};
+  struct trace_t trace = {NULL, NULL, 316, LOCATE_typing___PExpr___if_true_variable_ctx};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___PExpr____if_true_variable_ctx( self) /*PExpr::_if_true_variable_ctx*/;
 }
-val_t typing___AVardeclExpr___variable(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AVardeclExpr::variable (src/syntax//typing.nit:300,2--301:41)"};
+val_t typing___PExpr___if_false_variable_ctx(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 319, LOCATE_typing___PExpr___if_false_variable_ctx};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
-  return ATTR_typing___AVardeclExpr____variable( self) /*AVardeclExpr::_variable*/;
+  return ATTR_typing___PExpr____if_false_variable_ctx( self) /*PExpr::_if_false_variable_ctx*/;
 }
 void typing___AVardeclExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AVardeclExpr::after_typing (src/syntax//typing.nit:303,2--315:26)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((parser_nodes___AVardeclExpr___n_id_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_id))( self) /*AVardeclExpr::n_id*/;
-  variable2 = ((syntax_base___Token___to_symbol_t)CALL(variable2,COLOR_syntax_base___Token___to_symbol))(variable2) /*TId::to_symbol*/;
-  variable3 = NEW_syntax_base___Variable___init(variable2,  self); /*new Variable*/
-  variable2 = variable3;
-  variable1 = variable2;
-  ATTR_typing___AVardeclExpr____variable( self) /*AVardeclExpr::_variable*/ =  variable1 /*va*/;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  ((typing___VariableContext___add_t)CALL(variable2,COLOR_typing___VariableContext___add))(variable2,  variable1 /*va*/) /*VariableContext::add*/;
-  variable2 = ((parser_nodes___AVardeclExpr___n_type_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_type))( self) /*AVardeclExpr::n_type*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PType::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AVardeclExpr___n_type_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_type))( self) /*AVardeclExpr::n_type*/;
-    variable2 = ((typing___PType___stype_t)CALL(variable2,COLOR_typing___PType___stype))(variable2) /*PType::stype*/;
-    ((syntax_base___Variable___stype__eq_t)CALL( variable1 /*va*/,COLOR_syntax_base___Variable___stype__eq))( variable1 /*va*/, variable2) /*Variable::stype=*/;
-    variable2 = ((parser_nodes___AVardeclExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_expr))( self) /*AVardeclExpr::n_expr*/;
-    variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PExpr::==*/)))))));
-    if (UNTAG_Bool(variable2)) { /*if*/
-      variable2 = ((parser_nodes___AVardeclExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_expr))( self) /*AVardeclExpr::n_expr*/;
-      variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-      variable3 = ((syntax_base___Variable___stype_t)CALL( variable1 /*va*/,COLOR_syntax_base___Variable___stype))( variable1 /*va*/) /*Variable::stype*/;
-      ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2, variable3) /*TypingVisitor::check_conform*/;
+  struct trace_t trace = {NULL, NULL, 324, LOCATE_typing___AVardeclExpr___after_typing};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AVardeclExpr___n_id(variable[0])(variable[0]) /*AVardeclExpr::n_id*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___Token___to_symbol(variable[4])(variable[4]) /*Token::to_symbol*/;
+  /* Register variable[4]: Result */
+  variable[4] = NEW_VarVariable_syntax_base___VarVariable___init(variable[4], variable[0]) /*new VarVariable*/;
+  variable[3] = variable[4];
+  CALL_syntax_base___AVardeclExpr___variable__eq(variable[0])(variable[0],  variable[3] /*va*/) /*AVardeclExpr::variable=*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___add(variable[4])(variable[4],  variable[3] /*va*/) /*VariableContext::add*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AVardeclExpr___n_expr(variable[0])(variable[0]) /*AVardeclExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    CALL_control_flow___VariableContext___mark_is_set(variable[4])(variable[4],  variable[3] /*va*/) /*VariableContext::mark_is_set*/;
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AVardeclExpr___n_type(variable[0])(variable[0]) /*AVardeclExpr::n_type*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AVardeclExpr___n_type(variable[0])(variable[0]) /*AVardeclExpr::n_type*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___PType___stype(variable[4])(variable[4]) /*PType::stype*/;
+    CALL_syntax_base___Variable___stype__eq( variable[3] /*va*/)( variable[3] /*va*/, variable[4]) /*Variable::stype=*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AVardeclExpr___n_expr(variable[0])(variable[0]) /*AVardeclExpr::n_expr*/;
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+    if (UNTAG_Bool(variable[4])) { /*if*/
+      /* Register variable[4]: Result */
+      variable[4] = CALL_parser_nodes___AVardeclExpr___n_expr(variable[0])(variable[0]) /*AVardeclExpr::n_expr*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_syntax_base___Variable___stype( variable[3] /*va*/)( variable[3] /*va*/) /*Variable::stype*/;
+      CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
     }
   } else { /*if*/
-    variable2 = ((parser_nodes___AVardeclExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AVardeclExpr___n_expr))( self) /*AVardeclExpr::n_expr*/;
-    variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-    ((syntax_base___Variable___stype__eq_t)CALL( variable1 /*va*/,COLOR_syntax_base___Variable___stype__eq))( variable1 /*va*/, variable2) /*Variable::stype=*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AVardeclExpr___n_expr(variable[0])(variable[0]) /*AVardeclExpr::n_expr*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*AbsSyntaxVisitor::check_expr*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[4])))) { /*if*/
+      goto return_label54;
+    }
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AVardeclExpr___n_expr(variable[0])(variable[0]) /*AVardeclExpr::n_expr*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+    CALL_syntax_base___Variable___stype__eq( variable[3] /*va*/)( variable[3] /*va*/, variable[4]) /*Variable::stype=*/;
   }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label54: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ABlockExpr___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ABlockExpr::accept_typing (src/syntax//typing.nit:321,2--328:30)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = variable2;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable2 = ((typing___VariableContext___sub_t)CALL(variable2,COLOR_typing___VariableContext___sub))(variable2) /*VariableContext::sub*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable2) /*TypingVisitor::variable_ctx=*/;
-  ((typing___ABlockExpr___accept_typing_t)CALL( self,COLOR_SUPER_typing___ABlockExpr___accept_typing))( self,  param0) /*super ABlockExpr::accept_typing*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/,  variable1 /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  struct trace_t trace = {NULL, NULL, 345, LOCATE_typing___ABlockExpr___accept_typing};
+      static val_t once_value_57 = NIT_NULL; /* Once value for string variable[7]*/
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_control_flow___VariableContext___sub(variable[4])(variable[4], variable[0]) /*VariableContext::sub*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___ABlockExpr___n_expr(variable[0])(variable[0]) /*ABlockExpr::n_expr*/;
+  /* Register variable[4]: For iterator */
+  variable[4] = CALL_abstract_collection___Collection___iterator(variable[4])(variable[4]) /*List::iterator*/;
+  while (true) { /*for*/
+    /* Register variable[5]: For 'is_ok' result */
+    variable[5] = CALL_abstract_collection___Iterator___is_ok(variable[4])(variable[4]) /*ListIterator::is_ok*/;
+    if (!UNTAG_Bool(variable[5])) break; /*for*/
+    variable[5] = CALL_abstract_collection___Iterator___item(variable[4])(variable[4]) /*ListIterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[6]: Local variable */
+    variable[6] = variable[5];
+    /* Register variable[7]: Result */
+    variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_control_flow___VariableContext___unreash(variable[7])(variable[7]) /*VariableContext::unreash*/;
+    /* Ensure var variable[7]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[7])) { /* and */
+      /* Register variable[7]: Result */
+      variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_control_flow___VariableContext___already_unreash(variable[7])(variable[7]) /*VariableContext::already_unreash*/;
+      variable[7] =  TAG_Bool(!UNTAG_Bool(variable[7]));
+    }
+    /* Register variable[7]: Result */
+    if (UNTAG_Bool(variable[7])) { /*if*/
+      /* Register variable[7]: Result */
+      variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+      CALL_control_flow___VariableContext___already_unreash__eq(variable[7])(variable[7],  TAG_Bool(true)) /*VariableContext::already_unreash=*/;
+      /* Register variable[7]: Once String constant */
+      if (once_value_57 != NIT_NULL) variable[7] = once_value_57;
+      else {
+        variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Warning: unreachable statement."), TAG_Int(31)) /*new String*/;
+        once_value_57 = variable[7];
+      }
+      /* Register variable[7]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/,  variable[6] /*e*/, variable[7]) /*AbsSyntaxVisitor::warning*/;
+    }
+    CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/,  variable[6] /*e*/) /*TypingVisitor::visit*/;
+    continue_56: while(0);
+    CALL_abstract_collection___Iterator___next(variable[4])(variable[4]) /*ListIterator::next*/;
+  }
+  break_56: while(0);
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___merge( variable[3] /*old_var_ctx*/)( variable[3] /*old_var_ctx*/, variable[4]) /*VariableContext::merge*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label55: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AReturnExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AReturnExpr::after_typing (src/syntax//typing.nit:333,2--341:40)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMSrcLocalProperty::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AReturnExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AReturnExpr___n_expr))( self) /*AReturnExpr::n_expr*/;
-  variable2 = TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PExpr::==*/)))));
-  variable3 = variable2;
-  if (UNTAG_Bool(variable3)) { /* and */
-    variable3 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable1 /*t*/ ==  NIT_NULL /*null*/) || (( variable1 /*t*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))( variable1 /*t*/,  NIT_NULL /*null*/) /*MMType::==*/)))))));
-  }
-  variable2 = variable3;
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = NEW_string___String___with_native(BOX_NativeString("Error: Return without value in a function."), TAG_Int(42)); /*new String*/
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
+  struct trace_t trace = {NULL, NULL, 365, LOCATE_typing___AReturnExpr___after_typing};
+    static val_t once_value_59 = NIT_NULL; /* Once value for string variable[4]*/
+      static val_t once_value_60 = NIT_NULL; /* Once value for string variable[4]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___unreash__eq(variable[3])(variable[3],  TAG_Bool(true)) /*VariableContext::unreash=*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMLocalProperty___signature(variable[4])(variable[4]) /*MMLocalProperty::signature*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMSignature___return_type(variable[4])(variable[4]) /*MMSignature::return_type*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AReturnExpr___n_expr(variable[0])(variable[0]) /*AReturnExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[4]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[4])) { /* and */
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*t*/ ==  NIT_NULL /*null*/) || (( variable[3] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*t*/)( variable[3] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  }
+  /* Register variable[4]: Result */
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Once String constant */
+    if (once_value_59 != NIT_NULL) variable[4] = once_value_59;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("Error: Return without value in a function."), TAG_Int(42)) /*new String*/;
+      once_value_59 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
   } else { /*if*/
-    variable2 = ((parser_nodes___AReturnExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AReturnExpr___n_expr))( self) /*AReturnExpr::n_expr*/;
-    variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PExpr::==*/)))))));
-    variable3 = variable2;
-    if (UNTAG_Bool(variable3)) { /* and */
-      variable3 = TAG_Bool(( variable1 /*t*/ ==  NIT_NULL /*null*/) || (( variable1 /*t*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))( variable1 /*t*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-    }
-    variable2 = variable3;
-    if (UNTAG_Bool(variable2)) { /*if*/
-      variable2 = NEW_string___String___with_native(BOX_NativeString("Error: Return with value in a procedure."), TAG_Int(40)); /*new String*/
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AReturnExpr___n_expr(variable[0])(variable[0]) /*AReturnExpr::n_expr*/;
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+    /* Ensure var variable[4]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[4])) { /* and */
+      /* Register variable[4]: Result */
+      variable[4] = TAG_Bool(( variable[3] /*t*/ ==  NIT_NULL /*null*/) || (( variable[3] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*t*/)( variable[3] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+    }
+    /* Register variable[4]: Result */
+    if (UNTAG_Bool(variable[4])) { /*if*/
+      /* Register variable[4]: Once String constant */
+      if (once_value_60 != NIT_NULL) variable[4] = once_value_60;
+      else {
+        variable[4] = NEW_String_string___String___with_native(BOX_NativeString("Error: Return with value in a procedure."), TAG_Int(40)) /*new String*/;
+        once_value_60 = variable[4];
+      }
+      /* Register variable[4]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
     } else { /*if*/
-      variable2 = ((parser_nodes___AReturnExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AReturnExpr___n_expr))( self) /*AReturnExpr::n_expr*/;
-      variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PExpr::==*/)))))));
-      variable3 = variable2;
-      if (UNTAG_Bool(variable3)) { /* and */
-        variable3 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable1 /*t*/ ==  NIT_NULL /*null*/) || (( variable1 /*t*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))( variable1 /*t*/,  NIT_NULL /*null*/) /*MMType::==*/)))))));
+      /* Register variable[4]: Result */
+      variable[4] = CALL_parser_nodes___AReturnExpr___n_expr(variable[0])(variable[0]) /*AReturnExpr::n_expr*/;
+      /* Register variable[4]: Result */
+      variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+      /* Ensure var variable[4]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[4])) { /* and */
+        /* Register variable[4]: Result */
+        variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*t*/ ==  NIT_NULL /*null*/) || (( variable[3] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*t*/)( variable[3] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
       }
-      variable2 = variable3;
-      if (UNTAG_Bool(variable2)) { /*if*/
-        variable2 = ((parser_nodes___AReturnExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AReturnExpr___n_expr))( self) /*AReturnExpr::n_expr*/;
-        variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-        ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2,  variable1 /*t*/) /*TypingVisitor::check_conform*/;
+      /* Register variable[4]: Result */
+      if (UNTAG_Bool(variable[4])) { /*if*/
+        /* Register variable[4]: Result */
+        variable[4] = CALL_parser_nodes___AReturnExpr___n_expr(variable[0])(variable[0]) /*AReturnExpr::n_expr*/;
+        CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4],  variable[3] /*t*/) /*AbsSyntaxVisitor::check_conform_expr*/;
       }
     }
   }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label58: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AIfExpr___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AIfExpr::accept_typing (src/syntax//typing.nit:347,2--363:31)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AIfExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_expr))( self) /*AIfExpr::n_expr*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  variable2 = ((parser_nodes___AIfExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_expr))( self) /*AIfExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2, variable3) /*TypingVisitor::check_conform*/;
-  variable2 = ((parser_nodes___AIfExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_expr))( self) /*AIfExpr::n_expr*/;
-  variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AIfExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_expr))( self) /*AIfExpr::n_expr*/;
-    variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-    ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable2) /*TypingVisitor::variable_ctx=*/;
-  }
-  variable2 = ((parser_nodes___AIfExpr___n_then_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_then))( self) /*AIfExpr::n_then*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/,  variable1 /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
-  variable2 = ((parser_nodes___AIfExpr___n_else_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_else))( self) /*AIfExpr::n_else*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*PExpr::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AIfExpr___n_else_t)CALL( self,COLOR_parser_nodes___AIfExpr___n_else))( self) /*AIfExpr::n_else*/;
-    ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-    ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/,  variable1 /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
-  }
-  tracehead = trace.prev;
-  return;
-}
-void typing___AWhileExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AWhileExpr::after_typing (src/syntax//typing.nit:369,2--371:49)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AWhileExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AWhileExpr___n_expr))( self) /*AWhileExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable1, variable2) /*TypingVisitor::check_conform*/;
-  tracehead = trace.prev;
-  return;
-}
-void typing___AForExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AForExpr::after_typing (src/syntax//typing.nit:376,2--381:30)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(( variable1 /*varctx*/==NIT_NULL) || VAL_ISA( variable1 /*varctx*/, COLOR_SubVariableContext, ID_SubVariableContext)) /*cast SubVariableContext*/;
-  if (!UNTAG_Bool(variable2)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:380,3--38\n"); nit_exit(1);}
-  variable2 = ((typing___SubVariableContext___prev_t)CALL( variable1 /*varctx*/,COLOR_typing___SubVariableContext___prev))( variable1 /*varctx*/) /*SubVariableContext::prev*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable2) /*TypingVisitor::variable_ctx=*/;
-  tracehead = trace.prev;
-  return;
-}
-val_t typing___AForVardeclExpr___variable(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AForVardeclExpr::variable (src/syntax//typing.nit:386,2--387:34)"};
-  trace.prev = tracehead; tracehead = &trace;
-  tracehead = trace.prev;
-  return ATTR_typing___AForVardeclExpr____variable( self) /*AForVardeclExpr::_variable*/;
-}
-void typing___AForVardeclExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AForVardeclExpr::after_typing (src/syntax//typing.nit:389,2--413:20)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  static val_t once_value_variable4_36; static int once_bool_variable4_36;
-  val_t variable5;
-  val_t variable6;
-  static val_t once_value_variable6_37; static int once_bool_variable6_37;
-    val_t variable7;
-    val_t variable8;
-    val_t variable9;
-    val_t variable10;
-    val_t variable11;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = ((typing___VariableContext___sub_t)CALL(variable1,COLOR_typing___VariableContext___sub))(variable1) /*VariableContext::sub*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable1) /*TypingVisitor::variable_ctx=*/;
-  variable2 = ((parser_nodes___AForVardeclExpr___n_id_t)CALL( self,COLOR_parser_nodes___AForVardeclExpr___n_id))( self) /*AForVardeclExpr::n_id*/;
-  variable2 = ((syntax_base___Token___to_symbol_t)CALL(variable2,COLOR_syntax_base___Token___to_symbol))(variable2) /*TId::to_symbol*/;
-  variable3 = NEW_syntax_base___Variable___init(variable2,  self); /*new Variable*/
-  variable2 = variable3;
-  variable1 = variable2;
-  ATTR_typing___AForVardeclExpr____variable( self) /*AForVardeclExpr::_variable*/ =  variable1 /*variable*/;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  ((typing___VariableContext___add_t)CALL(variable2,COLOR_typing___VariableContext___add))(variable2,  variable1 /*variable*/) /*VariableContext::add*/;
-  variable3 = ((parser_nodes___AForVardeclExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AForVardeclExpr___n_expr))( self) /*AForVardeclExpr::n_expr*/;
-  variable3 = ((typing___PExpr___stype_t)CALL(variable3,COLOR_syntax_base___PExpr___stype))(variable3) /*PExpr::stype*/;
-  variable2 = variable3;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___type_collection_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_collection))( variable0 /*v*/) /*TypingVisitor::type_collection*/;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self,  variable2 /*expr_type*/, variable3) /*TypingVisitor::check_conform*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable3)))) { /*if*/
-    goto return_label35;
-  }
-  if (once_bool_variable4_36) variable4 = once_value_variable4_36;
-  else {
-    variable4 = NEW_string___String___with_native(BOX_NativeString("iterator"), TAG_Int(8)); /*new String*/
-    variable4 = ((symbol___String___to_symbol_t)CALL(variable4,COLOR_symbol___String___to_symbol))(variable4) /*String::to_symbol*/;
-    once_value_variable4_36 = variable4;
-    once_bool_variable4_36 = true;
-  }
-  variable4 = ((static_type___MMType___select_method_t)CALL( variable2 /*expr_type*/,COLOR_static_type___MMType___select_method))( variable2 /*expr_type*/, variable4) /*MMType::select_method*/;
-  variable3 = variable4;
-  variable4 = TAG_Bool(( variable3 /*prop*/ ==  NIT_NULL /*null*/) || (( variable3 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))( variable3 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable4 = NEW_string___String___with_native(BOX_NativeString("Error: Collection MUST have an iterate method"), TAG_Int(45)); /*new String*/
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-    goto return_label35;
-  }
-  variable5 = ((genericity___MMLocalProperty___signature_t)CALL( variable3 /*prop*/,COLOR_static_type___MMLocalProperty___signature))( variable3 /*prop*/) /*MMMethod::signature*/;
-  variable5 = ((static_type___MMSignature___return_type_t)CALL(variable5,COLOR_static_type___MMSignature___return_type))(variable5) /*MMSignature::return_type*/;
-  variable4 = variable5;
-  if (once_bool_variable6_37) variable6 = once_value_variable6_37;
-  else {
-    variable6 = NEW_string___String___with_native(BOX_NativeString("item"), TAG_Int(4)); /*new String*/
-    variable6 = ((symbol___String___to_symbol_t)CALL(variable6,COLOR_symbol___String___to_symbol))(variable6) /*String::to_symbol*/;
-    once_value_variable6_37 = variable6;
-    once_bool_variable6_37 = true;
-  }
-  variable6 = ((static_type___MMType___select_method_t)CALL( variable4 /*iter_type*/,COLOR_static_type___MMType___select_method))( variable4 /*iter_type*/, variable6) /*MMType::select_method*/;
-  variable5 = variable6;
-  variable6 = TAG_Bool(( variable5 /*prop2*/ ==  NIT_NULL /*null*/) || (( variable5 /*prop2*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable5 /*prop2*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable5 /*prop2*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable5 /*prop2*/,COLOR_kernel___Object_____eqeq))( variable5 /*prop2*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable6)) { /*if*/
-    variable6 = NEW_string___String___init(); /*new String*/
-    variable7 = NEW_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)); /*new String*/
-    variable8 = variable7;
-    ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable8) /*String::append*/;
-    variable9 =  variable4 /*iter_type*/;
-    variable9 = ((string___String___to_s_t)CALL(variable9,COLOR_string___Object___to_s))(variable9) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable9) /*String::append*/;
-    variable10 = NEW_string___String___with_native(BOX_NativeString(" MUST have an item method"), TAG_Int(25)); /*new String*/
-    variable11 = variable10;
-    ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable11) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable6) /*TypingVisitor::error*/;
-    goto return_label35;
-  }
-  variable7 = ((genericity___MMLocalProperty___signature_t)CALL( variable5 /*prop2*/,COLOR_static_type___MMLocalProperty___signature))( variable5 /*prop2*/) /*MMMethod::signature*/;
-  variable7 = ((static_type___MMSignature___return_type_t)CALL(variable7,COLOR_static_type___MMSignature___return_type))(variable7) /*MMSignature::return_type*/;
-  variable6 = variable7;
-  variable7 = ((parser_nodes___AForVardeclExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AForVardeclExpr___n_expr))( self) /*AForVardeclExpr::n_expr*/;
-  variable7 = ((typing___PExpr___is_self_t)CALL(variable7,COLOR_typing___PExpr___is_self))(variable7) /*PExpr::is_self*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable7)))) { /*if*/
-    variable7 = ((static_type___MMType___not_for_self_t)CALL( variable6 /*t*/,COLOR_static_type___MMType___not_for_self))( variable6 /*t*/) /*MMType::not_for_self*/;
-    variable6 = variable7 /*t=*/;
-  }
-  ((syntax_base___Variable___stype__eq_t)CALL( variable1 /*variable*/,COLOR_syntax_base___Variable___stype__eq))( variable1 /*variable*/,  variable6 /*t*/) /*Variable::stype=*/;
-  return_label35: while(false);
+void typing___AContinueExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 381, LOCATE_typing___AContinueExpr___after_typing};
+    static val_t once_value_62 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_63 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_64 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___unreash__eq(variable[3])(variable[3],  TAG_Bool(true)) /*VariableContext::unreash=*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_escape___AEscapeExpr___compute_escapable_block(variable[0])(variable[0], variable[4]) /*AEscapeExpr::compute_escapable_block*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*esc*/ ==  NIT_NULL /*null*/) || (( variable[3] /*esc*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*esc*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*esc*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*esc*/)( variable[3] /*esc*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label61;
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_escape___EscapableBlock___is_break_block( variable[3] /*esc*/)( variable[3] /*esc*/) /*EscapableBlock::is_break_block*/;
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Once String constant */
+    if (once_value_62 != NIT_NULL) variable[4] = once_value_62;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("Error: 'continue' forbiden in break blocks."), TAG_Int(43)) /*new String*/;
+      once_value_62 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
+    goto return_label61;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_escape___EscapableBlock___continue_stype( variable[3] /*esc*/)( variable[3] /*esc*/) /*EscapableBlock::continue_stype*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AContinueExpr___n_expr(variable[0])(variable[0]) /*AContinueExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[5]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[5])) { /* and */
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*t*/ ==  NIT_NULL /*null*/) || (( variable[4] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*t*/)( variable[4] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  }
+  /* Register variable[5]: Result */
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Once String constant */
+    if (once_value_63 != NIT_NULL) variable[5] = once_value_63;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: continue with a value required in this block."), TAG_Int(52)) /*new String*/;
+      once_value_63 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+  } else { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___AContinueExpr___n_expr(variable[0])(variable[0]) /*AContinueExpr::n_expr*/;
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+    /* Ensure var variable[5]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[5])) { /* and */
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(( variable[4] /*t*/ ==  NIT_NULL /*null*/) || (( variable[4] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*t*/)( variable[4] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+    }
+    /* Register variable[5]: Result */
+    if (UNTAG_Bool(variable[5])) { /*if*/
+      /* Register variable[5]: Once String constant */
+      if (once_value_64 != NIT_NULL) variable[5] = once_value_64;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: continue without value required in this block."), TAG_Int(53)) /*new String*/;
+        once_value_64 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[5]: Result */
+      variable[5] = CALL_parser_nodes___AContinueExpr___n_expr(variable[0])(variable[0]) /*AContinueExpr::n_expr*/;
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+      /* Ensure var variable[5]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[5])) { /* and */
+        /* Register variable[5]: Result */
+        variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*t*/ ==  NIT_NULL /*null*/) || (( variable[4] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*t*/)( variable[4] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+      }
+      /* Register variable[5]: Result */
+      if (UNTAG_Bool(variable[5])) { /*if*/
+        /* Register variable[5]: Result */
+        variable[5] = CALL_parser_nodes___AContinueExpr___n_expr(variable[0])(variable[0]) /*AContinueExpr::n_expr*/;
+        CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[5],  variable[4] /*t*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+      }
+    }
+  }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label61: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AAssertExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAssertExpr::after_typing (src/syntax//typing.nit:418,2--421:90)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AAssertExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAssertExpr___n_expr))( self) /*AAssertExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable1, variable2) /*TypingVisitor::check_conform*/;
-  variable1 = ((parser_nodes___AAssertExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAssertExpr___n_expr))( self) /*AAssertExpr::n_expr*/;
-  variable1 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable1,COLOR_typing___PExpr___if_true_variable_ctx))(variable1) /*PExpr::if_true_variable_ctx*/;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((parser_nodes___AAssertExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAssertExpr___n_expr))( self) /*AAssertExpr::n_expr*/;
-    variable1 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable1,COLOR_typing___PExpr___if_true_variable_ctx))(variable1) /*PExpr::if_true_variable_ctx*/;
-    ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable1) /*TypingVisitor::variable_ctx=*/;
+void typing___ABreakExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 405, LOCATE_typing___ABreakExpr___after_typing};
+    static val_t once_value_66 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_67 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___unreash__eq(variable[3])(variable[3],  TAG_Bool(true)) /*VariableContext::unreash=*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_escape___AEscapeExpr___compute_escapable_block(variable[0])(variable[0], variable[4]) /*AEscapeExpr::compute_escapable_block*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*esc*/ ==  NIT_NULL /*null*/) || (( variable[3] /*esc*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*esc*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*esc*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*esc*/)( variable[3] /*esc*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label65;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_escape___EscapableBlock___break_list( variable[3] /*esc*/)( variable[3] /*esc*/) /*EscapableBlock::break_list*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ABreakExpr___n_expr(variable[0])(variable[0]) /*ABreakExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[5]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[5])) { /* and */
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*bl*/ ==  NIT_NULL /*null*/) || (( variable[4] /*bl*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*bl*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*bl*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*bl*/)( variable[4] /*bl*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  }
+  /* Register variable[5]: Result */
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Once String constant */
+    if (once_value_66 != NIT_NULL) variable[5] = once_value_66;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: break with a value required in this block."), TAG_Int(49)) /*new String*/;
+      once_value_66 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+  } else { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___ABreakExpr___n_expr(variable[0])(variable[0]) /*ABreakExpr::n_expr*/;
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+    /* Ensure var variable[5]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[5])) { /* and */
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(( variable[4] /*bl*/ ==  NIT_NULL /*null*/) || (( variable[4] /*bl*/ != NIT_NULL) && UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*bl*/)( variable[4] /*bl*/,  NIT_NULL /*null*/) /*AbstractArrayRead::==*/)));
+    }
+    /* Register variable[5]: Result */
+    if (UNTAG_Bool(variable[5])) { /*if*/
+      /* Register variable[5]: Once String constant */
+      if (once_value_67 != NIT_NULL) variable[5] = once_value_67;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: break without value required in this block."), TAG_Int(50)) /*new String*/;
+        once_value_67 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[5]: Result */
+      variable[5] = CALL_parser_nodes___ABreakExpr___n_expr(variable[0])(variable[0]) /*ABreakExpr::n_expr*/;
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+      /* Ensure var variable[5]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[5])) { /* and */
+        /* Register variable[5]: Result */
+        variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*bl*/ ==  NIT_NULL /*null*/) || (( variable[4] /*bl*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*bl*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*bl*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*bl*/)( variable[4] /*bl*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+      }
+      /* Register variable[5]: Result */
+      if (UNTAG_Bool(variable[5])) { /*if*/
+        /* Register variable[5]: Result */
+        variable[5] = CALL_parser_nodes___ABreakExpr___n_expr(variable[0])(variable[0]) /*ABreakExpr::n_expr*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[4] /*bl*/)( variable[4] /*bl*/, variable[5]) /*AbstractArray::add*/;
+      }
+    }
   }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label65: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___AVarFormExpr___variable(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AVarFormExpr::variable (src/syntax//typing.nit:426,2--427:50)"};
-  trace.prev = tracehead; tracehead = &trace;
-  tracehead = trace.prev;
-  return ATTR_typing___AVarFormExpr____variable( self) /*AVarFormExpr::_variable*/;
-}
-void typing___AVarFormExpr___variable__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AVarFormExpr::variable= (src/syntax//typing.nit:426,2--427:50)"};
-  trace.prev = tracehead; tracehead = &trace;
-  ATTR_typing___AVarFormExpr____variable( self) /*AVarFormExpr::_variable*/ =  param0;
+void typing___AAbortExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 425, LOCATE_typing___AAbortExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___unreash__eq(variable[3])(variable[3],  TAG_Bool(true)) /*VariableContext::unreash=*/;
+  return_label68: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___AVarExpr___is_variable(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AVarExpr::is_variable (src/syntax//typing.nit:431,2--38)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(true);
-  goto return_label39;
-  return_label39: while(false);
-  tracehead = trace.prev;
-  return variable0;
-}
-void typing___AVarExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AVarExpr::after_typing (src/syntax//typing.nit:433,2--435:40)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable2 = ((typing___AVarFormExpr___variable_t)CALL( self,COLOR_typing___AVarFormExpr___variable))( self) /*AVarExpr::variable*/;
-  variable1 = ((typing___VariableContext___stype_t)CALL(variable1,COLOR_typing___VariableContext___stype))(variable1, variable2) /*VariableContext::stype*/;
-  ATTR_typing___PExpr____stype( self) /*AVarExpr::_stype*/ = variable1;
+void typing___AIfExpr___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 432, LOCATE_typing___AIfExpr___accept_typing};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfExpr___n_expr(variable[0])(variable[0]) /*AIfExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfExpr___n_expr(variable[0])(variable[0]) /*AIfExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfExpr___n_expr(variable[0])(variable[0]) /*AIfExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_true_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::use_if_true_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfExpr___n_then(variable[0])(variable[0]) /*AIfExpr::n_then*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___AIfExpr___n_then(variable[0])(variable[0]) /*AIfExpr::n_then*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_control_flow___VariableContext___sub(variable[4])(variable[4], variable[5]) /*VariableContext::sub*/;
+    CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::variable_ctx=*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AIfExpr___n_then(variable[0])(variable[0]) /*AIfExpr::n_then*/;
+    CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[4] = variable[5];
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AIfExpr___n_expr(variable[0])(variable[0]) /*AIfExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_false_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::use_if_false_variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AIfExpr___n_else(variable[0])(variable[0]) /*AIfExpr::n_else*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_parser_nodes___AIfExpr___n_else(variable[0])(variable[0]) /*AIfExpr::n_else*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext___sub(variable[5])(variable[5], variable[6]) /*VariableContext::sub*/;
+    CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::variable_ctx=*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___AIfExpr___n_else(variable[0])(variable[0]) /*AIfExpr::n_else*/;
+    CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::visit*/;
+  }
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  CALL_control_flow___VariableContext___merge2( variable[3] /*old_var_ctx*/)( variable[3] /*old_var_ctx*/,  variable[4] /*then_var_ctx*/, variable[5], variable[6]) /*VariableContext::merge2*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label69: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AVarAssignExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AVarAssignExpr::after_typing (src/syntax//typing.nit:440,2--443:40)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable3 = ((typing___AVarFormExpr___variable_t)CALL( self,COLOR_typing___AVarFormExpr___variable))( self) /*AVarAssignExpr::variable*/;
-  variable2 = ((typing___VariableContext___stype_t)CALL(variable2,COLOR_typing___VariableContext___stype))(variable2, variable3) /*VariableContext::stype*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AAssignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_value))( self) /*AVarAssignExpr::n_value*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2,  variable1 /*t*/) /*TypingVisitor::check_conform*/;
-  tracehead = trace.prev;
-  return;
-}
-void typing___AReassignFormExpr___do_lvalue_typing(val_t  self, val_t  param0, val_t  param1) {
-  struct trace_t trace = {NULL, "typing::AReassignFormExpr::do_lvalue_typing (src/syntax//typing.nit:448,2--464:68)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-    val_t variable5;
-    val_t variable6;
-    val_t variable7;
-    val_t variable8;
-    val_t variable9;
-    val_t variable10;
-    val_t variable11;
-    val_t variable12;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 = TAG_Bool(( variable1 /*type_lvalue*/ ==  NIT_NULL /*null*/) || (( variable1 /*type_lvalue*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*type_lvalue*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*type_lvalue*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*type_lvalue*/,COLOR_kernel___Object_____eqeq))( variable1 /*type_lvalue*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    goto return_label42;
-  }
-  variable3 = ((parser_nodes___AReassignFormExpr___n_assign_op_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_assign_op))( self) /*AReassignFormExpr::n_assign_op*/;
-  variable3 = ((typing___PAssignOp___method_name_t)CALL(variable3,COLOR_typing___PAssignOp___method_name))(variable3) /*PAssignOp::method_name*/;
-  variable2 = variable3;
-  variable4 = ((static_type___MMType___select_method_t)CALL( variable1 /*type_lvalue*/,COLOR_static_type___MMType___select_method))( variable1 /*type_lvalue*/,  variable2 /*name*/) /*MMType::select_method*/;
-  variable3 = variable4;
-  variable4 = TAG_Bool(( variable3 /*prop*/ ==  NIT_NULL /*null*/) || (( variable3 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))( variable3 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable4 = NEW_string___String___init(); /*new String*/
-    variable5 = NEW_string___String___with_native(BOX_NativeString("Error: Method '"), TAG_Int(15)); /*new String*/
-    variable6 = variable5;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-    variable7 =  variable2 /*name*/;
-    variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable7) /*String::append*/;
-    variable8 = NEW_string___String___with_native(BOX_NativeString("' doesn't exists in "), TAG_Int(20)); /*new String*/
-    variable9 = variable8;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable9) /*String::append*/;
-    variable10 =  variable1 /*type_lvalue*/;
-    variable10 = ((string___String___to_s_t)CALL(variable10,COLOR_string___Object___to_s))(variable10) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable10) /*String::append*/;
-    variable11 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-    variable12 = variable11;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable12) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-    goto return_label42;
-  }
-  variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable3 /*prop*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable3 /*prop*/) /*MMMethod::global*/;
-  variable5 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-  ((syntax_base___MMGlobalProperty___check_visibility_t)CALL(variable4,COLOR_syntax_base___MMGlobalProperty___check_visibility))(variable4,  variable0 /*v*/,  self, variable5,  TAG_Bool(false)) /*MMGlobalProperty::check_visibility*/;
-  variable5 = ((genericity___MMLocalProperty___signature_t)CALL( variable3 /*prop*/,COLOR_static_type___MMLocalProperty___signature))( variable3 /*prop*/) /*MMMethod::signature*/;
-  variable4 = variable5;
-  ATTR_typing___AReassignFormExpr____assign_method( self) /*AReassignFormExpr::_assign_method*/ =  variable3 /*prop*/;
-  variable5 = ((parser_nodes___AReassignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_value))( self) /*AReassignFormExpr::n_value*/;
-  variable5 = ((typing___PExpr___stype_t)CALL(variable5,COLOR_syntax_base___PExpr___stype))(variable5) /*PExpr::stype*/;
-  variable6 = ((static_type___MMSignature_____bra_t)CALL( variable4 /*psig*/,COLOR_static_type___MMSignature_____bra))( variable4 /*psig*/,  TAG_Int(0)) /*MMSignature::[]*/;
-  variable6 = ((static_type___MMType___not_for_self_t)CALL(variable6,COLOR_static_type___MMType___not_for_self))(variable6) /*MMType::not_for_self*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable5, variable6) /*TypingVisitor::check_conform*/;
-  variable5 = ((static_type___MMSignature___return_type_t)CALL( variable4 /*psig*/,COLOR_static_type___MMSignature___return_type))( variable4 /*psig*/) /*MMSignature::return_type*/;
-  variable5 = ((static_type___MMType___not_for_self_t)CALL(variable5,COLOR_static_type___MMType___not_for_self))(variable5) /*MMType::not_for_self*/;
-  variable6 = ((parser_nodes___AReassignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_value))( self) /*AReassignFormExpr::n_value*/;
-  variable6 = ((typing___PExpr___stype_t)CALL(variable6,COLOR_syntax_base___PExpr___stype))(variable6) /*PExpr::stype*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable5, variable6) /*TypingVisitor::check_conform*/;
-  return_label42: while(false);
+void typing___AWhileExpr___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 471, LOCATE_typing___AWhileExpr___accept_typing};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = NEW_EscapableBlock_escape___EscapableBlock___init(variable[0]) /*new EscapableBlock*/;
+  ATTR_typing___AWhileExpr____escapable(variable[0]) /*AWhileExpr::_escapable*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___AWhileExpr____escapable(variable[0]) /*AWhileExpr::_escapable*/;
+  CALL_escape___EscapableContext___push(variable[3])(variable[3], variable[4]) /*EscapableContext::push*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_control_flow___VariableContext___sub(variable[5])(variable[5], variable[0]) /*VariableContext::sub*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AWhileExpr___n_expr(variable[0])(variable[0]) /*AWhileExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::visit*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AWhileExpr___n_expr(variable[0])(variable[0]) /*AWhileExpr::n_expr*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[5], variable[6]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AWhileExpr___n_expr(variable[0])(variable[0]) /*AWhileExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_true_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::use_if_true_variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AWhileExpr___n_block(variable[0])(variable[0]) /*AWhileExpr::n_block*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_parser_nodes___AWhileExpr___n_block(variable[0])(variable[0]) /*AWhileExpr::n_block*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext___sub(variable[5])(variable[5], variable[6]) /*VariableContext::sub*/;
+    CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::variable_ctx=*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___AWhileExpr___n_block(variable[0])(variable[0]) /*AWhileExpr::n_block*/;
+    CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::visit*/;
+  }
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[4] /*old_base_var_ctx*/) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  CALL_escape___EscapableContext___pop(variable[5])(variable[5]) /*EscapableContext::pop*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label70: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___AReassignFormExpr___assign_method(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AReassignFormExpr::assign_method (src/syntax//typing.nit:467,2--468:39)"};
-  trace.prev = tracehead; tracehead = &trace;
-  tracehead = trace.prev;
-  return ATTR_typing___AReassignFormExpr____assign_method( self) /*AReassignFormExpr::_assign_method*/;
-}
-val_t typing___PAssignOp___method_name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::PAssignOp::method_name (src/syntax//typing.nit:472,2--25)"};
-  trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method method_name called (src/syntax//typing.nit:472,2)\n");
-  nit_exit(1);
-  tracehead = trace.prev;
-  return NIT_NULL;
-}
-val_t typing___APlusAssignOp___method_name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::APlusAssignOp::method_name (src/syntax//typing.nit:475,2--52)"};
-  val_t variable0;
-  static val_t once_value_variable0_44; static int once_bool_variable0_44;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_44) variable0 = once_value_variable0_44;
-  else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("+"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_44 = variable0;
-    once_bool_variable0_44 = true;
+val_t typing___AWhileExpr___escapable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 468, LOCATE_typing___AWhileExpr___escapable};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AWhileExpr____escapable( self) /*AWhileExpr::_escapable*/;
+}
+void typing___AForExpr___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 508, LOCATE_typing___AForExpr___accept_typing};
+  static val_t once_value_72; static int once_bool_72; /* Once value for variable[8]*/
+    static val_t once_value_73 = NIT_NULL; /* Once value for string variable[8]*/
+    static val_t once_value_74 = NIT_NULL; /* Once value for string variable[7]*/
+  static val_t once_value_75; static int once_bool_75; /* Once value for variable[9]*/
+    static val_t once_value_76 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_77 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_78 = NIT_NULL; /* Once value for string variable[9]*/
+  static val_t once_value_79; static int once_bool_79; /* Once value for variable[9]*/
+    static val_t once_value_80 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_81 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_82 = NIT_NULL; /* Once value for string variable[9]*/
+  static val_t once_value_83; static int once_bool_83; /* Once value for variable[9]*/
+    static val_t once_value_84 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_85 = NIT_NULL; /* Once value for string variable[9]*/
+    static val_t once_value_86 = NIT_NULL; /* Once value for string variable[9]*/
+  val_t variable[10];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = NEW_EscapableBlock_escape___EscapableBlock___init(variable[0]) /*new EscapableBlock*/;
+  ATTR_typing___AForExpr____escapable(variable[0]) /*AForExpr::_escapable*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___AForExpr____escapable(variable[0]) /*AForExpr::_escapable*/;
+  CALL_escape___EscapableContext___push(variable[3])(variable[3], variable[4]) /*EscapableContext::push*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_control_flow___VariableContext___sub(variable[5])(variable[5], variable[0]) /*VariableContext::sub*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[5]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AForExpr___n_id(variable[0])(variable[0]) /*AForExpr::n_id*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___Token___to_symbol(variable[6])(variable[6]) /*Token::to_symbol*/;
+  /* Register variable[6]: Result */
+  variable[6] = NEW_AutoVariable_syntax_base___AutoVariable___init(variable[6], variable[0]) /*new AutoVariable*/;
+  variable[5] = variable[6];
+  CALL_syntax_base___AForExpr___variable__eq(variable[0])(variable[0],  variable[5] /*va*/) /*AForExpr::variable=*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_control_flow___VariableContext___add(variable[6])(variable[6],  variable[5] /*va*/) /*VariableContext::add*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AForExpr___n_expr(variable[0])(variable[0]) /*AForExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[6]) /*TypingVisitor::visit*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AForExpr___n_expr(variable[0])(variable[0]) /*AForExpr::n_expr*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AbsSyntaxVisitor___type_collection( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_collection*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[6], variable[7]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    goto return_label71;
   }
-  goto return_label43;
-  return_label43: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___AForExpr___n_expr(variable[0])(variable[0]) /*AForExpr::n_expr*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___PExpr___stype(variable[7])(variable[7]) /*PExpr::stype*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_static_type___MMType___local_class( variable[6] /*expr_type*/)( variable[6] /*expr_type*/) /*MMType::local_class*/;
+  /* Register variable[8]: Once expression result */
+  if (once_bool_72) variable[8] = once_value_72;
+  else {
+    /* Register variable[8]: Once String constant */
+    if (once_value_73 != NIT_NULL) variable[8] = once_value_73;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString("iterator"), TAG_Int(8)) /*new String*/;
+      once_value_73 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Register variable[8]: Result */
+    variable[8] = CALL_symbol___String___to_symbol(variable[8])(variable[8]) /*String::to_symbol*/;
+    once_value_72 = variable[8];
+    once_bool_72 = true;
+  }
+  /* Register variable[8]: Result */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[7])(variable[7], variable[8]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AForExpr____meth_iterator(variable[0]) /*AForExpr::_meth_iterator*/ = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = ATTR_typing___AForExpr____meth_iterator(variable[0]) /*AForExpr::_meth_iterator*/;
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool((variable[7] ==  NIT_NULL /*null*/) || ((variable[7] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[7])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[7], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[7])(variable[7],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    /* Register variable[7]: Once String constant */
+    if (once_value_74 != NIT_NULL) variable[7] = once_value_74;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Error: Collection MUST have an iterate method"), TAG_Int(45)) /*new String*/;
+      once_value_74 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+    goto return_label71;
+  }
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = ATTR_typing___AForExpr____meth_iterator(variable[0]) /*AForExpr::_meth_iterator*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMLocalProperty___signature_for(variable[8])(variable[8],  variable[6] /*expr_type*/) /*MMLocalProperty::signature_for*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMSignature___return_type(variable[8])(variable[8]) /*MMSignature::return_type*/;
+  variable[7] = variable[8];
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMType___local_class( variable[7] /*iter_type*/)( variable[7] /*iter_type*/) /*MMType::local_class*/;
+  /* Register variable[9]: Once expression result */
+  if (once_bool_75) variable[9] = once_value_75;
+  else {
+    /* Register variable[9]: Once String constant */
+    if (once_value_76 != NIT_NULL) variable[9] = once_value_76;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("is_ok"), TAG_Int(5)) /*new String*/;
+      once_value_76 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Register variable[9]: Result */
+    variable[9] = CALL_symbol___String___to_symbol(variable[9])(variable[9]) /*String::to_symbol*/;
+    once_value_75 = variable[9];
+    once_bool_75 = true;
+  }
+  /* Register variable[9]: Result */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[8])(variable[8], variable[9]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AForExpr____meth_is_ok(variable[0]) /*AForExpr::_meth_is_ok*/ = variable[8];
+  /* Register variable[8]: Result */
+  variable[8] = ATTR_typing___AForExpr____meth_is_ok(variable[0]) /*AForExpr::_meth_is_ok*/;
+  /* Register variable[8]: Result */
+  variable[8] = TAG_Bool((variable[8] ==  NIT_NULL /*null*/) || ((variable[8] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[8])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[8], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[8])(variable[8],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_77 != NIT_NULL) variable[9] = once_value_77;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+      once_value_77 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    variable[9] =  variable[7] /*iter_type*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_78 != NIT_NULL) variable[9] = once_value_78;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have an is_ok method"), TAG_Int(26)) /*new String*/;
+      once_value_78 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
+    goto return_label71;
+  }
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMType___local_class( variable[7] /*iter_type*/)( variable[7] /*iter_type*/) /*MMType::local_class*/;
+  /* Register variable[9]: Once expression result */
+  if (once_bool_79) variable[9] = once_value_79;
+  else {
+    /* Register variable[9]: Once String constant */
+    if (once_value_80 != NIT_NULL) variable[9] = once_value_80;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("item"), TAG_Int(4)) /*new String*/;
+      once_value_80 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Register variable[9]: Result */
+    variable[9] = CALL_symbol___String___to_symbol(variable[9])(variable[9]) /*String::to_symbol*/;
+    once_value_79 = variable[9];
+    once_bool_79 = true;
+  }
+  /* Register variable[9]: Result */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[8])(variable[8], variable[9]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AForExpr____meth_item(variable[0]) /*AForExpr::_meth_item*/ = variable[8];
+  /* Register variable[8]: Result */
+  variable[8] = ATTR_typing___AForExpr____meth_item(variable[0]) /*AForExpr::_meth_item*/;
+  /* Register variable[8]: Result */
+  variable[8] = TAG_Bool((variable[8] ==  NIT_NULL /*null*/) || ((variable[8] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[8])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[8], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[8])(variable[8],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_81 != NIT_NULL) variable[9] = once_value_81;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+      once_value_81 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    variable[9] =  variable[7] /*iter_type*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_82 != NIT_NULL) variable[9] = once_value_82;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have an item method"), TAG_Int(25)) /*new String*/;
+      once_value_82 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
+    goto return_label71;
+  }
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMType___local_class( variable[7] /*iter_type*/)( variable[7] /*iter_type*/) /*MMType::local_class*/;
+  /* Register variable[9]: Once expression result */
+  if (once_bool_83) variable[9] = once_value_83;
+  else {
+    /* Register variable[9]: Once String constant */
+    if (once_value_84 != NIT_NULL) variable[9] = once_value_84;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("next"), TAG_Int(4)) /*new String*/;
+      once_value_84 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Register variable[9]: Result */
+    variable[9] = CALL_symbol___String___to_symbol(variable[9])(variable[9]) /*String::to_symbol*/;
+    once_value_83 = variable[9];
+    once_bool_83 = true;
+  }
+  /* Register variable[9]: Result */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[8])(variable[8], variable[9]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AForExpr____meth_next(variable[0]) /*AForExpr::_meth_next*/ = variable[8];
+  /* Register variable[8]: Result */
+  variable[8] = ATTR_typing___AForExpr____meth_next(variable[0]) /*AForExpr::_meth_next*/;
+  /* Register variable[8]: Result */
+  variable[8] = TAG_Bool((variable[8] ==  NIT_NULL /*null*/) || ((variable[8] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[8])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[8], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[8])(variable[8],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_85 != NIT_NULL) variable[9] = once_value_85;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+      once_value_85 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    variable[9] =  variable[7] /*iter_type*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[9]: Once String constant */
+    if (once_value_86 != NIT_NULL) variable[9] = once_value_86;
+    else {
+      variable[9] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have a next method"), TAG_Int(24)) /*new String*/;
+      once_value_86 = variable[9];
+    }
+    /* Register variable[9]: Result */
+    /* Ensure var variable[9]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
+    goto return_label71;
+  }
+  /* Register variable[8]: Local variable */
+  /* Register variable[9]: Result */
+  variable[9] = ATTR_typing___AForExpr____meth_item(variable[0]) /*AForExpr::_meth_item*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMLocalProperty___signature_for(variable[9])(variable[9],  variable[7] /*iter_type*/) /*MMLocalProperty::signature_for*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMSignature___return_type(variable[9])(variable[9]) /*MMSignature::return_type*/;
+  variable[8] = variable[9];
+  /* Register variable[9]: Result */
+  variable[9] = CALL_parser_nodes___AForExpr___n_expr(variable[0])(variable[0]) /*AForExpr::n_expr*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_typing___PExpr___is_self(variable[9])(variable[9]) /*PExpr::is_self*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[9])))) { /*if*/
+    /* Register variable[9]: Result */
+    variable[9] = CALL_static_type___MMType___not_for_self( variable[8] /*t*/)( variable[8] /*t*/) /*MMType::not_for_self*/;
+    variable[8] = variable[9] /*t=*/;
+  }
+  CALL_syntax_base___Variable___stype__eq( variable[5] /*va*/)( variable[5] /*va*/,  variable[8] /*t*/) /*Variable::stype=*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_parser_nodes___AForExpr___n_block(variable[0])(variable[0]) /*AForExpr::n_block*/;
+  /* Register variable[9]: Result */
+  variable[9] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[9] ==  NIT_NULL /*null*/) || ((variable[9] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[9])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[9], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[9])(variable[9],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[9])) { /*if*/
+    /* Register variable[9]: Result */
+    variable[9] = CALL_parser_nodes___AForExpr___n_block(variable[0])(variable[0]) /*AForExpr::n_block*/;
+    CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[9]) /*TypingVisitor::visit*/;
+  }
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[4] /*old_base_var_ctx*/) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+  CALL_escape___EscapableContext___pop(variable[9])(variable[9]) /*EscapableContext::pop*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label71: while(false);
+  tracehead = trace.prev;
+  return;
 }
-val_t typing___AMinusAssignOp___method_name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AMinusAssignOp::method_name (src/syntax//typing.nit:478,2--52)"};
-  val_t variable0;
-  static val_t once_value_variable0_46; static int once_bool_variable0_46;
+val_t typing___AForExpr___escapable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 501, LOCATE_typing___AForExpr___escapable};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_46) variable0 = once_value_variable0_46;
-  else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("-"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_46 = variable0;
-    once_bool_variable0_46 = true;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AForExpr____escapable( self) /*AForExpr::_escapable*/;
+}
+val_t typing___AForExpr___meth_iterator(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 504, LOCATE_typing___AForExpr___meth_iterator};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AForExpr____meth_iterator( self) /*AForExpr::_meth_iterator*/;
+}
+val_t typing___AForExpr___meth_is_ok(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 505, LOCATE_typing___AForExpr___meth_is_ok};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AForExpr____meth_is_ok( self) /*AForExpr::_meth_is_ok*/;
+}
+val_t typing___AForExpr___meth_item(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 506, LOCATE_typing___AForExpr___meth_item};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AForExpr____meth_item( self) /*AForExpr::_meth_item*/;
+}
+val_t typing___AForExpr___meth_next(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 507, LOCATE_typing___AForExpr___meth_next};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AForExpr____meth_next( self) /*AForExpr::_meth_next*/;
+}
+void typing___AAssertExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 561, LOCATE_typing___AAssertExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAssertExpr___n_expr(variable[0])(variable[0]) /*AAssertExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3], variable[4]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAssertExpr___n_expr(variable[0])(variable[0]) /*AAssertExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_true_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::use_if_true_variable_ctx*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label87: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AVarExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 572, LOCATE_typing___AVarExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  CALL_control_flow___VariableContext___check_is_set(variable[3])(variable[3], variable[0], variable[4]) /*VariableContext::check_is_set*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_control_flow___VariableContext___stype(variable[3])(variable[3], variable[4]) /*VariableContext::stype*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ = variable[3];
+  return_label88: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___AVarExpr___its_variable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 570, LOCATE_typing___AVarExpr___its_variable};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  variable[1] = variable[2];
+  goto return_label89;
+  return_label89: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___AVarAssignExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 581, LOCATE_typing___AVarAssignExpr___after_typing};
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  CALL_control_flow___VariableContext___mark_is_set(variable[3])(variable[3], variable[4]) /*VariableContext::mark_is_set*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_control_flow___VariableContext___stype(variable[4])(variable[4], variable[5]) /*VariableContext::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_control_flow___VariableContext___stype(variable[5])(variable[5], variable[6]) /*VariableContext::stype*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[5],  variable[4] /*btype*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+    goto return_label90;
   }
-  goto return_label45;
-  return_label45: while(false);
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___PExpr___stype(variable[7])(variable[7]) /*PExpr::stype*/;
+  CALL_control_flow___VariableContext___stype__eq(variable[5])(variable[5], variable[6], variable[7]) /*VariableContext::stype=*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label90: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
-void typing___AVarReassignExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AVarReassignExpr::after_typing (src/syntax//typing.nit:482,2--485:23)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
+val_t typing___AReassignFormExpr___do_rvalue_typing(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 598, LOCATE_typing___AReassignFormExpr___do_rvalue_typing};
+    static val_t once_value_92 = NIT_NULL; /* Once value for string variable[7]*/
+    static val_t once_value_93 = NIT_NULL; /* Once value for string variable[7]*/
+    static val_t once_value_94 = NIT_NULL; /* Once value for string variable[7]*/
+  val_t variable[10];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[2] /*type_lvalue*/ ==  NIT_NULL /*null*/) || (( variable[2] /*type_lvalue*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[2] /*type_lvalue*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[2] /*type_lvalue*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[2] /*type_lvalue*/)( variable[2] /*type_lvalue*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    variable[3] =  NIT_NULL /*null*/;
+    goto return_label91;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AReassignFormExpr___n_assign_op(variable[0])(variable[0]) /*AReassignFormExpr::n_assign_op*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PAssignOp___method_name(variable[5])(variable[5]) /*PAssignOp::method_name*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_static_type___MMType___local_class( variable[2] /*type_lvalue*/)( variable[2] /*type_lvalue*/) /*MMType::local_class*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalClass___has_global_property_by_name( variable[5] /*lc*/)( variable[5] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::has_global_property_by_name*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    variable[6] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_92 != NIT_NULL) variable[7] = once_value_92;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Error: Method '"), TAG_Int(15)) /*new String*/;
+      once_value_92 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    variable[7] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_93 != NIT_NULL) variable[7] = once_value_93;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("' doesn't exists in "), TAG_Int(20)) /*new String*/;
+      once_value_93 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    variable[7] =  variable[2] /*type_lvalue*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_94 != NIT_NULL) variable[7] = once_value_94;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+      once_value_94 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[6]) /*AbsSyntaxVisitor::error*/;
+    variable[3] =  NIT_NULL /*null*/;
+    goto return_label91;
+  }
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalClass___select_method( variable[5] /*lc*/)( variable[5] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::select_method*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalProperty___global( variable[6] /*prop*/)( variable[6] /*prop*/) /*MMLocalProperty::global*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+  CALL_syntax_base___MMGlobalProperty___check_visibility(variable[7])(variable[7],  variable[1] /*v*/, variable[0], variable[8],  TAG_Bool(false)) /*MMGlobalProperty::check_visibility*/;
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMLocalProperty___signature_for( variable[6] /*prop*/)( variable[6] /*prop*/,  variable[2] /*type_lvalue*/) /*MMLocalProperty::signature_for*/;
+  variable[7] = variable[8];
+  ATTR_typing___AReassignFormExpr____assign_method(variable[0]) /*AReassignFormExpr::_assign_method*/ =  variable[6] /*prop*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMSignature_____bra( variable[7] /*psig*/)( variable[7] /*psig*/,  TAG_Int(0)) /*MMSignature::[]*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_static_type___MMType___not_for_self(variable[9])(variable[9]) /*MMType::not_for_self*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[8], variable[9]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[8])))) { /*if*/
+    variable[3] =  NIT_NULL /*null*/;
+    goto return_label91;
+  }
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMSignature___return_type( variable[7] /*psig*/)( variable[7] /*psig*/) /*MMSignature::return_type*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMType___not_for_self(variable[8])(variable[8]) /*MMType::not_for_self*/;
+  variable[3] = variable[8];
+  goto return_label91;
+  return_label91: while(false);
+  tracehead = trace.prev;
+  return variable[3];
+}
+val_t typing___AReassignFormExpr___assign_method(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 620, LOCATE_typing___AReassignFormExpr___assign_method};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable3 = ((typing___AVarFormExpr___variable_t)CALL( self,COLOR_typing___AVarFormExpr___variable))( self) /*AVarReassignExpr::variable*/;
-  variable2 = ((typing___VariableContext___stype_t)CALL(variable2,COLOR_typing___VariableContext___stype))(variable2, variable3) /*VariableContext::stype*/;
-  variable1 = variable2;
-  ((typing___AReassignFormExpr___do_lvalue_typing_t)CALL( self,COLOR_typing___AReassignFormExpr___do_lvalue_typing))( self,  variable0 /*v*/,  variable1 /*t*/) /*AVarReassignExpr::do_lvalue_typing*/;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AReassignFormExpr____assign_method( self) /*AReassignFormExpr::_assign_method*/;
+}
+void typing___AVarReassignExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 625, LOCATE_typing___AVarReassignExpr___after_typing};
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  CALL_control_flow___VariableContext___check_is_set(variable[3])(variable[3], variable[0], variable[4]) /*VariableContext::check_is_set*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  CALL_control_flow___VariableContext___mark_is_set(variable[3])(variable[3], variable[4]) /*VariableContext::mark_is_set*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_control_flow___VariableContext___stype(variable[4])(variable[4], variable[5]) /*VariableContext::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___AReassignFormExpr___do_rvalue_typing(variable[0])(variable[0],  variable[1] /*v*/,  variable[3] /*t*/) /*AReassignFormExpr::do_rvalue_typing*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(( variable[4] /*t2*/ ==  NIT_NULL /*null*/) || (( variable[4] /*t2*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*t2*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*t2*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*t2*/)( variable[4] /*t2*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    goto return_label95;
+  }
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_control_flow___VariableContext___stype(variable[6])(variable[6], variable[7]) /*VariableContext::stype*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___check_conform( variable[1] /*v*/)( variable[1] /*v*/, variable[6],  variable[4] /*t2*/,  variable[5] /*btype*/) /*AbsSyntaxVisitor::check_conform*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    goto return_label95;
+  }
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AVarFormExpr___variable(variable[0])(variable[0]) /*AVarFormExpr::variable*/;
+  CALL_control_flow___VariableContext___stype__eq(variable[6])(variable[6], variable[7],  variable[4] /*t2*/) /*VariableContext::stype=*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label95: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___ASelfExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASelfExpr::after_typing (src/syntax//typing.nit:490,2--493:22)"};
-  val_t variable0;
-  val_t variable1;
+val_t typing___PAssignOp___method_name(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 645, LOCATE_typing___PAssignOp___method_name};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((typing___TypingVisitor___self_type_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___self_type))( variable0 /*v*/) /*TypingVisitor::self_type*/;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*MMType::==*/)))))));
-  if (!UNTAG_Bool(variable1)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:492,3--28\n"); nit_exit(1);}
-  variable1 = ((typing___TypingVisitor___self_type_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___self_type))( variable0 /*v*/) /*TypingVisitor::self_type*/;
-  ATTR_typing___PExpr____stype( self) /*ASelfExpr::_stype*/ = variable1;
+  trace.file = LOCATE_typing;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_typing, 645);
+  nit_exit(1);
+  tracehead = trace.prev;
+  return NIT_NULL;
+}
+val_t typing___APlusAssignOp___method_name(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 648, LOCATE_typing___APlusAssignOp___method_name};
+  static val_t once_value_97; static int once_bool_97; /* Once value for variable[2]*/
+    static val_t once_value_98 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_97) variable[2] = once_value_97;
+  else {
+    /* Register variable[2]: Once String constant */
+    if (once_value_98 != NIT_NULL) variable[2] = once_value_98;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("+"), TAG_Int(1)) /*new String*/;
+      once_value_98 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_97 = variable[2];
+    once_bool_97 = true;
+  }
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label96;
+  return_label96: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+val_t typing___AMinusAssignOp___method_name(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 651, LOCATE_typing___AMinusAssignOp___method_name};
+  static val_t once_value_100; static int once_bool_100; /* Once value for variable[2]*/
+    static val_t once_value_101 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_100) variable[2] = once_value_100;
+  else {
+    /* Register variable[2]: Once String constant */
+    if (once_value_101 != NIT_NULL) variable[2] = once_value_101;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("-"), TAG_Int(1)) /*new String*/;
+      once_value_101 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_100 = variable[2];
+    once_bool_100 = true;
+  }
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label99;
+  return_label99: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___ASelfExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 657, LOCATE_typing___ASelfExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+  CALL_syntax_base___ASelfExpr___variable__eq(variable[0])(variable[0], variable[3]) /*ASelfExpr::variable=*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___ASelfExpr___variable(variable[0])(variable[0]) /*ASelfExpr::variable*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_control_flow___VariableContext___stype(variable[3])(variable[3], variable[4]) /*VariableContext::stype*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label102: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___ASelfExpr___is_self(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASelfExpr::is_self (src/syntax//typing.nit:496,9--41)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(true);
-  goto return_label49;
-  return_label49: while(false);
+  struct trace_t trace = {NULL, NULL, 664, LOCATE_typing___ASelfExpr___is_self};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Bool(true);
+  goto return_label103;
+  return_label103: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+val_t typing___ASelfExpr___its_variable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 655, LOCATE_typing___ASelfExpr___its_variable};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___ASelfExpr___variable(variable[0])(variable[0]) /*ASelfExpr::variable*/;
+  variable[1] = variable[2];
+  goto return_label104;
+  return_label104: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AImplicitSelfExpr___is_implicit_self(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AImplicitSelfExpr::is_implicit_self (src/syntax//typing.nit:500,9--50)"};
-  val_t variable0;
+  struct trace_t trace = {NULL, NULL, 668, LOCATE_typing___AImplicitSelfExpr___is_implicit_self};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(true);
-  goto return_label50;
-  return_label50: while(false);
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Bool(true);
+  goto return_label105;
+  return_label105: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 void typing___AIfexprExpr___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AIfexprExpr::accept_typing (src/syntax//typing.nit:504,2--525:12)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-      val_t variable5;
-      val_t variable6;
-      val_t variable7;
-      val_t variable8;
-      val_t variable9;
-      val_t variable10;
-      val_t variable11;
-      val_t variable12;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AIfexprExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_expr))( self) /*AIfexprExpr::n_expr*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  variable2 = ((parser_nodes___AIfexprExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_expr))( self) /*AIfexprExpr::n_expr*/;
-  variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AIfexprExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_expr))( self) /*AIfexprExpr::n_expr*/;
-    variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-    ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable2) /*TypingVisitor::variable_ctx=*/;
-  }
-  variable2 = ((parser_nodes___AIfexprExpr___n_then_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_then))( self) /*AIfexprExpr::n_then*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/,  variable1 /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
-  variable2 = ((parser_nodes___AIfexprExpr___n_else_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_else))( self) /*AIfexprExpr::n_else*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  variable2 = ((parser_nodes___AIfexprExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_expr))( self) /*AIfexprExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2, variable3) /*TypingVisitor::check_conform*/;
-  variable3 = ((parser_nodes___AIfexprExpr___n_then_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_then))( self) /*AIfexprExpr::n_then*/;
-  variable3 = ((typing___PExpr___stype_t)CALL(variable3,COLOR_syntax_base___PExpr___stype))(variable3) /*PExpr::stype*/;
-  variable2 = variable3;
-  variable4 = ((parser_nodes___AIfexprExpr___n_else_t)CALL( self,COLOR_parser_nodes___AIfexprExpr___n_else))( self) /*AIfexprExpr::n_else*/;
-  variable4 = ((typing___PExpr___stype_t)CALL(variable4,COLOR_syntax_base___PExpr___stype))(variable4) /*PExpr::stype*/;
-  variable3 = variable4;
-  variable4 = ((static_type___MMType_____l_t)CALL( variable2 /*t*/,COLOR_static_type___MMType_____l))( variable2 /*t*/,  variable3 /*te*/) /*MMType::<*/;
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable2 =  variable3 /*te*/ /*t=*/;
-  } else { /*if*/
-    variable4 = ((static_type___MMType_____l_t)CALL( variable3 /*te*/,COLOR_static_type___MMType_____l))( variable3 /*te*/,  variable2 /*t*/) /*MMType::<*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable4)))) { /*if*/
-      variable4 = NEW_string___String___init(); /*new String*/
-      variable5 = NEW_string___String___with_native(BOX_NativeString("Type error: "), TAG_Int(12)); /*new String*/
-      variable6 = variable5;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-      variable7 =  variable3 /*te*/;
-      variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable7) /*String::append*/;
-      variable8 = NEW_string___String___with_native(BOX_NativeString(" is not a subtype of "), TAG_Int(21)); /*new String*/
-      variable9 = variable8;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable9) /*String::append*/;
-      variable10 =  variable2 /*t*/;
-      variable10 = ((string___String___to_s_t)CALL(variable10,COLOR_string___Object___to_s))(variable10) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable10) /*String::append*/;
-      variable11 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable12 = variable11;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable12) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-      goto return_label51;
-    }
-  }
-  ATTR_typing___PExpr____stype( self) /*AIfexprExpr::_stype*/ =  variable2 /*t*/;
-  return_label51: while(false);
+  struct trace_t trace = {NULL, NULL, 672, LOCATE_typing___AIfexprExpr___accept_typing};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_expr(variable[0])(variable[0]) /*AIfexprExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_expr(variable[0])(variable[0]) /*AIfexprExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_true_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::use_if_true_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_then(variable[0])(variable[0]) /*AIfexprExpr::n_then*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_expr(variable[0])(variable[0]) /*AIfexprExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_false_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::use_if_false_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_else(variable[0])(variable[0]) /*AIfexprExpr::n_else*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIfexprExpr___n_expr(variable[0])(variable[0]) /*AIfexprExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(2)) /*new Array[PExpr]*/ /* Ensure var: Literal array*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AIfexprExpr___n_then(variable[0])(variable[0]) /*AIfexprExpr::n_then*/;
+  CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AIfexprExpr___n_else(variable[0])(variable[0]) /*AIfexprExpr::n_else*/;
+  CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[6]) /*AbstractArray::add*/;
+  /* Register variable[4]: Result */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_multiexpr( variable[1] /*v*/)( variable[1] /*v*/,  NIT_NULL /*null*/, variable[4]) /*AbsSyntaxVisitor::check_conform_multiexpr*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ = variable[4];
+  return_label106: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ABoolExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ABoolExpr::after_typing (src/syntax//typing.nit:530,2--532:22)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ATTR_typing___PExpr____stype( self) /*ABoolExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 691, LOCATE_typing___ABoolExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label107: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___AOrExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AOrExpr::after_typing (src/syntax//typing.nit:537,2--541:22)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AOrExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AOrExpr___n_expr))( self) /*AOrExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable1, variable2) /*TypingVisitor::check_conform*/;
-  variable1 = ((parser_nodes___AOrExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___AOrExpr___n_expr2))( self) /*AOrExpr::n_expr2*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable1, variable2) /*TypingVisitor::check_conform*/;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ATTR_typing___PExpr____stype( self) /*AOrExpr::_stype*/ = variable1;
+void typing___AOrExpr___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 699, LOCATE_typing___AOrExpr___accept_typing};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr(variable[0])(variable[0]) /*AOrExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr(variable[0])(variable[0]) /*AOrExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_false_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::use_if_false_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr2(variable[0])(variable[0]) /*AOrExpr::n_expr2*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr2(variable[0])(variable[0]) /*AOrExpr::n_expr2*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___if_false_variable_ctx(variable[4])(variable[4]) /*PExpr::if_false_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AOrExpr___n_expr2(variable[0])(variable[0]) /*AOrExpr::n_expr2*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___PExpr___if_false_variable_ctx(variable[4])(variable[4]) /*PExpr::if_false_variable_ctx*/;
+    ATTR_typing___PExpr____if_false_variable_ctx(variable[0]) /*PExpr::_if_false_variable_ctx*/ = variable[4];
+  } else { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    ATTR_typing___PExpr____if_false_variable_ctx(variable[0]) /*PExpr::_if_false_variable_ctx*/ = variable[4];
+  }
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr(variable[0])(variable[0]) /*AOrExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AOrExpr___n_expr2(variable[0])(variable[0]) /*AOrExpr::n_expr2*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label108: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AAndExpr___accept_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAndExpr::accept_typing (src/syntax//typing.nit:546,2--564:22)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AAndExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr))( self) /*AAndExpr::n_expr*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  variable2 = ((parser_nodes___AAndExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr))( self) /*AAndExpr::n_expr*/;
-  variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AAndExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr))( self) /*AAndExpr::n_expr*/;
-    variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-    ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/, variable2) /*TypingVisitor::variable_ctx=*/;
-  }
-  variable2 = ((parser_nodes___AAndExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr2))( self) /*AAndExpr::n_expr2*/;
-  ((typing___TypingVisitor___visit_t)CALL( variable0 /*v*/,COLOR_parser_prod___Visitor___visit))( variable0 /*v*/, variable2) /*TypingVisitor::visit*/;
-  variable2 = ((parser_nodes___AAndExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr2))( self) /*AAndExpr::n_expr2*/;
-  variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*VariableContext::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((parser_nodes___AAndExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr2))( self) /*AAndExpr::n_expr2*/;
-    variable2 = ((typing___PExpr___if_true_variable_ctx_t)CALL(variable2,COLOR_typing___PExpr___if_true_variable_ctx))(variable2) /*PExpr::if_true_variable_ctx*/;
-    ATTR_typing___PExpr____if_true_variable_ctx( self) /*AAndExpr::_if_true_variable_ctx*/ = variable2;
+  struct trace_t trace = {NULL, NULL, 723, LOCATE_typing___AAndExpr___accept_typing};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr(variable[0])(variable[0]) /*AAndExpr::n_expr*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr(variable[0])(variable[0]) /*AAndExpr::n_expr*/;
+  CALL_typing___TypingVisitor___use_if_true_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::use_if_true_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr2(variable[0])(variable[0]) /*AAndExpr::n_expr2*/;
+  CALL_parser_prod___Visitor___visit( variable[1] /*v*/)( variable[1] /*v*/, variable[4]) /*TypingVisitor::visit*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr2(variable[0])(variable[0]) /*AAndExpr::n_expr2*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___if_true_variable_ctx(variable[4])(variable[4]) /*PExpr::if_true_variable_ctx*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AAndExpr___n_expr2(variable[0])(variable[0]) /*AAndExpr::n_expr2*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___PExpr___if_true_variable_ctx(variable[4])(variable[4]) /*PExpr::if_true_variable_ctx*/;
+    ATTR_typing___PExpr____if_true_variable_ctx(variable[0]) /*PExpr::_if_true_variable_ctx*/ = variable[4];
   } else { /*if*/
-    variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-    ATTR_typing___PExpr____if_true_variable_ctx( self) /*AAndExpr::_if_true_variable_ctx*/ = variable2;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    ATTR_typing___PExpr____if_true_variable_ctx(variable[0]) /*PExpr::_if_true_variable_ctx*/ = variable[4];
   }
-  ((typing___TypingVisitor___variable_ctx__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx__eq))( variable0 /*v*/,  variable1 /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
-  variable2 = ((parser_nodes___AAndExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr))( self) /*AAndExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2, variable3) /*TypingVisitor::check_conform*/;
-  variable2 = ((parser_nodes___AAndExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___AAndExpr___n_expr2))( self) /*AAndExpr::n_expr2*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable3 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2, variable3) /*TypingVisitor::check_conform*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ATTR_typing___PExpr____stype( self) /*AAndExpr::_stype*/ = variable2;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr(variable[0])(variable[0]) /*AAndExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAndExpr___n_expr2(variable[0])(variable[0]) /*AAndExpr::n_expr2*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label109: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ANotExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ANotExpr::after_typing (src/syntax//typing.nit:569,2--572:22)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ANotExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ANotExpr___n_expr))( self) /*ANotExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable1, variable2) /*TypingVisitor::check_conform*/;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ATTR_typing___PExpr____stype( self) /*ANotExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 747, LOCATE_typing___ANotExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ANotExpr___n_expr(variable[0])(variable[0]) /*ANotExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3], variable[4]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ANotExpr___n_expr(variable[0])(variable[0]) /*ANotExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____if_true_variable_ctx(variable[3]) /*PExpr::_if_true_variable_ctx*/;
+  ATTR_typing___PExpr____if_false_variable_ctx(variable[0]) /*PExpr::_if_false_variable_ctx*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ANotExpr___n_expr(variable[0])(variable[0]) /*ANotExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____if_false_variable_ctx(variable[3]) /*PExpr::_if_false_variable_ctx*/;
+  ATTR_typing___PExpr____if_true_variable_ctx(variable[0]) /*PExpr::_if_true_variable_ctx*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label110: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AIntExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AIntExpr::after_typing (src/syntax//typing.nit:577,2--579:21)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_int_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_int))( variable0 /*v*/) /*TypingVisitor::type_int*/;
-  ATTR_typing___PExpr____stype( self) /*AIntExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 761, LOCATE_typing___AIntExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_int( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_int*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label111: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AFloatExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AFloatExpr::after_typing (src/syntax//typing.nit:585,2--587:23)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_float_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_float))( variable0 /*v*/) /*TypingVisitor::type_float*/;
-  ATTR_typing___PExpr____stype( self) /*AFloatExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 769, LOCATE_typing___AFloatExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_float( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_float*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label112: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ACharExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACharExpr::after_typing (src/syntax//typing.nit:592,2--594:22)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_char_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_char))( variable0 /*v*/) /*TypingVisitor::type_char*/;
-  ATTR_typing___PExpr____stype( self) /*ACharExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 777, LOCATE_typing___ACharExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_char( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_char*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label113: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AStringFormExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AStringFormExpr::after_typing (src/syntax//typing.nit:599,2--601:24)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_string_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_string))( variable0 /*v*/) /*TypingVisitor::type_string*/;
-  ATTR_typing___PExpr____stype( self) /*AStringFormExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 786, LOCATE_typing___AStringFormExpr___after_typing};
+  static val_t once_value_115; static int once_bool_115; /* Once value for variable[4]*/
+    static val_t once_value_116 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_117 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_118 = NIT_NULL; /* Once value for string variable[4]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_string( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_string*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_115) variable[4] = once_value_115;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_116 != NIT_NULL) variable[4] = once_value_116;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("with_native"), TAG_Int(11)) /*new String*/;
+      once_value_116 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_115 = variable[4];
+    once_bool_115 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AStringFormExpr____meth_with_native(variable[0]) /*AStringFormExpr::_meth_with_native*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___AStringFormExpr____meth_with_native(variable[0]) /*AStringFormExpr::_meth_with_native*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    variable[3] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_117 != NIT_NULL) variable[4] = once_value_117;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_117 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_118 != NIT_NULL) variable[4] = once_value_118;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have a with_native method."), TAG_Int(32)) /*new String*/;
+      once_value_118 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_string___Object___to_s(variable[3])(variable[3]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+  }
+  return_label114: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___ASuperstringExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASuperstringExpr::after_typing (src/syntax//typing.nit:606,2--608:24)"};
-  val_t variable0;
-  val_t variable1;
+val_t typing___AStringFormExpr___meth_with_native(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 785, LOCATE_typing___AStringFormExpr___meth_with_native};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_string_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_string))( variable0 /*v*/) /*TypingVisitor::type_string*/;
-  ATTR_typing___PExpr____stype( self) /*ASuperstringExpr::_stype*/ = variable1;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AStringFormExpr____meth_with_native( self) /*AStringFormExpr::_meth_with_native*/;
+}
+void typing___ASuperstringExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 800, LOCATE_typing___ASuperstringExpr___after_typing};
+  static val_t once_value_120; static int once_bool_120; /* Once value for variable[4]*/
+    static val_t once_value_121 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_122 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_123 = NIT_NULL; /* Once value for string variable[4]*/
+  static val_t once_value_124; static int once_bool_124; /* Once value for variable[4]*/
+    static val_t once_value_125 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_126 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_127 = NIT_NULL; /* Once value for string variable[4]*/
+  static val_t once_value_128; static int once_bool_128; /* Once value for variable[4]*/
+    static val_t once_value_129 = NIT_NULL; /* Once value for string variable[4]*/
+    static val_t once_value_130 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_string( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_string*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_array( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::type_array*/;
+  ATTR_typing___ASuperstringExpr____atype(variable[0]) /*ASuperstringExpr::_atype*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___ASuperstringExpr____atype(variable[0]) /*ASuperstringExpr::_atype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_120) variable[4] = once_value_120;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_121 != NIT_NULL) variable[4] = once_value_121;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("with_capacity"), TAG_Int(13)) /*new String*/;
+      once_value_121 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_120 = variable[4];
+    once_bool_120 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___ASuperstringExpr____meth_with_capacity(variable[0]) /*ASuperstringExpr::_meth_with_capacity*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___ASuperstringExpr____meth_with_capacity(variable[0]) /*ASuperstringExpr::_meth_with_capacity*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    variable[3] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_122 != NIT_NULL) variable[4] = once_value_122;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_122 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = ATTR_typing___ASuperstringExpr____atype(variable[0]) /*ASuperstringExpr::_atype*/;
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_123 != NIT_NULL) variable[4] = once_value_123;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have a with_capacity method."), TAG_Int(34)) /*new String*/;
+      once_value_123 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_string___Object___to_s(variable[3])(variable[3]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___ASuperstringExpr____atype(variable[0]) /*ASuperstringExpr::_atype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_124) variable[4] = once_value_124;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_125 != NIT_NULL) variable[4] = once_value_125;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("add"), TAG_Int(3)) /*new String*/;
+      once_value_125 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_124 = variable[4];
+    once_bool_124 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___ASuperstringExpr____meth_add(variable[0]) /*ASuperstringExpr::_meth_add*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___ASuperstringExpr____meth_add(variable[0]) /*ASuperstringExpr::_meth_add*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    variable[3] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_126 != NIT_NULL) variable[4] = once_value_126;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_126 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = ATTR_typing___ASuperstringExpr____atype(variable[0]) /*ASuperstringExpr::_atype*/;
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[4]: Once String constant */
+    if (once_value_127 != NIT_NULL) variable[4] = once_value_127;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have an add method."), TAG_Int(25)) /*new String*/;
+      once_value_127 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Ensure var variable[4]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_string___Object___to_s(variable[3])(variable[3]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_object( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_object*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_128) variable[4] = once_value_128;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_129 != NIT_NULL) variable[4] = once_value_129;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("to_s"), TAG_Int(4)) /*new String*/;
+      once_value_129 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_128 = variable[4];
+    once_bool_128 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___ASuperstringExpr____meth_to_s(variable[0]) /*ASuperstringExpr::_meth_to_s*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___ASuperstringExpr____meth_to_s(variable[0]) /*ASuperstringExpr::_meth_to_s*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_130 != NIT_NULL) variable[3] = once_value_130;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Object MUST have a to_s method."), TAG_Int(31)) /*new String*/;
+      once_value_130 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+  }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label119: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___ANullExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ANullExpr::after_typing (src/syntax//typing.nit:613,2--615:22)"};
-  val_t variable0;
-  val_t variable1;
+val_t typing___ASuperstringExpr___meth_with_capacity(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 796, LOCATE_typing___ASuperstringExpr___meth_with_capacity};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_none_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_none))( variable0 /*v*/) /*TypingVisitor::type_none*/;
-  ATTR_typing___PExpr____stype( self) /*ANullExpr::_stype*/ = variable1;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
-  return;
+  return ATTR_typing___ASuperstringExpr____meth_with_capacity( self) /*ASuperstringExpr::_meth_with_capacity*/;
 }
-void typing___AArrayExpr___stype__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AArrayExpr::stype= (src/syntax//typing.nit:620,2--45)"};
-  val_t variable0;
+val_t typing___ASuperstringExpr___meth_add(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 797, LOCATE_typing___ASuperstringExpr___meth_add};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ATTR_typing___PExpr____stype( self) /*AArrayExpr::_stype*/ =  variable0 /*t*/;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___ASuperstringExpr____meth_add( self) /*ASuperstringExpr::_meth_add*/;
+}
+val_t typing___ASuperstringExpr___meth_to_s(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 798, LOCATE_typing___ASuperstringExpr___meth_to_s};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___ASuperstringExpr____meth_to_s( self) /*ASuperstringExpr::_meth_to_s*/;
+}
+val_t typing___ASuperstringExpr___atype(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 799, LOCATE_typing___ASuperstringExpr___atype};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___ASuperstringExpr____atype( self) /*ASuperstringExpr::_atype*/;
+}
+void typing___ANullExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 815, LOCATE_typing___ANullExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_none( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_none*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label131: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AArrayExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AArrayExpr::after_typing (src/syntax//typing.nit:622,2--634:29)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-    val_t variable3;
-    val_t variable4;
-    val_t variable5;
-    val_t variable6;
-      val_t variable7;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = NIT_NULL /*decl variable stype*/;
-  variable2 = ((parser_nodes___AArrayExpr___n_exprs_t)CALL( self,COLOR_parser_nodes___AArrayExpr___n_exprs))( self) /*AArrayExpr::n_exprs*/;
-  variable2 = ((list___List___iterator_t)CALL(variable2,COLOR_abstract_collection___Collection___iterator))(variable2) /*List::iterator*/;
-  while (true) { /*for*/
-    variable3 = ((list___ListIterator___is_ok_t)CALL(variable2,COLOR_abstract_collection___Iterator___is_ok))(variable2) /*ListIterator::is_ok*/;
-    if (!UNTAG_Bool(variable3)) break; /*for*/
-    variable3 = ((list___ListIterator___item_t)CALL(variable2,COLOR_abstract_collection___Iterator___item))(variable2) /*ListIterator::item*/;
-    variable5 = ((typing___PExpr___stype_t)CALL( variable3 /*n*/,COLOR_syntax_base___PExpr___stype))( variable3 /*n*/) /*PExpr::stype*/;
-    variable4 = variable5;
-    variable5 = TAG_Bool(( variable1 /*stype*/ ==  NIT_NULL /*null*/) || (( variable1 /*stype*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*stype*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*stype*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*stype*/,COLOR_kernel___Object_____eqeq))( variable1 /*stype*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-    variable6 = variable5;
-    if (!UNTAG_Bool(variable6)) { /* or */
-      variable6 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable4 /*ntype*/ ==  NIT_NULL /*null*/) || (( variable4 /*ntype*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable4 /*ntype*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable4 /*ntype*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable4 /*ntype*/,COLOR_kernel___Object_____eqeq))( variable4 /*ntype*/,  NIT_NULL /*null*/) /*MMType::==*/)))))));
-      variable7 = variable6;
-      if (UNTAG_Bool(variable7)) { /* and */
-        variable7 = ((static_type___MMType_____l_t)CALL( variable1 /*stype*/,COLOR_static_type___MMType_____l))( variable1 /*stype*/,  variable4 /*ntype*/) /*MMType::<*/;
-      }
-      variable6 = variable7;
-    }
-    variable5 = variable6;
-    if (UNTAG_Bool(variable5)) { /*if*/
-      variable1 =  variable4 /*ntype*/ /*stype=*/;
-    }
-    continue_64: while(0);
-    ((list___ListIterator___next_t)CALL(variable2,COLOR_abstract_collection___Iterator___next))(variable2) /*ListIterator::next*/;
-  }
-  break_64: while(0);
-  variable2 = ((parser_nodes___AArrayExpr___n_exprs_t)CALL( self,COLOR_parser_nodes___AArrayExpr___n_exprs))( self) /*AArrayExpr::n_exprs*/;
-  variable2 = ((list___List___iterator_t)CALL(variable2,COLOR_abstract_collection___Collection___iterator))(variable2) /*List::iterator*/;
-  while (true) { /*for*/
-    variable3 = ((list___ListIterator___is_ok_t)CALL(variable2,COLOR_abstract_collection___Iterator___is_ok))(variable2) /*ListIterator::is_ok*/;
-    if (!UNTAG_Bool(variable3)) break; /*for*/
-    variable3 = ((list___ListIterator___item_t)CALL(variable2,COLOR_abstract_collection___Iterator___item))(variable2) /*ListIterator::item*/;
-    variable4 = ((typing___PExpr___stype_t)CALL( variable3 /*n*/,COLOR_syntax_base___PExpr___stype))( variable3 /*n*/) /*PExpr::stype*/;
-    ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable4,  variable1 /*stype*/) /*TypingVisitor::check_conform*/;
-    continue_65: while(0);
-    ((list___ListIterator___next_t)CALL(variable2,COLOR_abstract_collection___Iterator___next))(variable2) /*ListIterator::next*/;
+  struct trace_t trace = {NULL, NULL, 826, LOCATE_typing___AArrayExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AArrayExpr___n_exprs(variable[0])(variable[0]) /*AArrayExpr::n_exprs*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_multiexpr( variable[1] /*v*/)( variable[1] /*v*/,  NIT_NULL /*null*/, variable[4]) /*AbsSyntaxVisitor::check_conform_multiexpr*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*stype*/ ==  NIT_NULL /*null*/) || (( variable[3] /*stype*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*stype*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*stype*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*stype*/)( variable[3] /*stype*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label132;
+  }
+  CALL_typing___AArrayExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/,  variable[3] /*stype*/) /*AArrayExpr::do_typing*/;
+  return_label132: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___AArrayExpr___meth_with_capacity(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 823, LOCATE_typing___AArrayExpr___meth_with_capacity};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AArrayExpr____meth_with_capacity( self) /*AArrayExpr::_meth_with_capacity*/;
+}
+val_t typing___AArrayExpr___meth_add(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 824, LOCATE_typing___AArrayExpr___meth_add};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AArrayExpr____meth_add( self) /*AArrayExpr::_meth_add*/;
+}
+void typing___AArrayExpr___do_typing(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 833, LOCATE_typing___AArrayExpr___do_typing};
+  static val_t once_value_134; static int once_bool_134; /* Once value for variable[5]*/
+    static val_t once_value_135 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_136 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_137 = NIT_NULL; /* Once value for string variable[5]*/
+  static val_t once_value_138; static int once_bool_138; /* Once value for variable[5]*/
+    static val_t once_value_139 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_140 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_141 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_array( variable[1] /*v*/)( variable[1] /*v*/,  variable[2] /*element_type*/) /*AbsSyntaxVisitor::type_array*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMType___local_class(variable[4])(variable[4]) /*MMType::local_class*/;
+  /* Register variable[5]: Once expression result */
+  if (once_bool_134) variable[5] = once_value_134;
+  else {
+    /* Register variable[5]: Once String constant */
+    if (once_value_135 != NIT_NULL) variable[5] = once_value_135;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("with_capacity"), TAG_Int(13)) /*new String*/;
+      once_value_135 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Register variable[5]: Result */
+    variable[5] = CALL_symbol___String___to_symbol(variable[5])(variable[5]) /*String::to_symbol*/;
+    once_value_134 = variable[5];
+    once_bool_134 = true;
+  }
+  /* Register variable[5]: Result */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[4])(variable[4], variable[5]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AArrayExpr____meth_with_capacity(variable[0]) /*AArrayExpr::_meth_with_capacity*/ = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___AArrayExpr____meth_with_capacity(variable[0]) /*AArrayExpr::_meth_with_capacity*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_136 != NIT_NULL) variable[5] = once_value_136;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_136 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[5]: Result */
+    variable[5] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_137 != NIT_NULL) variable[5] = once_value_137;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have a with_capacity method."), TAG_Int(34)) /*new String*/;
+      once_value_137 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
   }
-  break_65: while(0);
-  variable2 = ((syntax_base___AbsSyntaxVisitor___type_array_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_array))( variable0 /*v*/,  variable1 /*stype*/) /*TypingVisitor::type_array*/;
-  ATTR_typing___PExpr____stype( self) /*AArrayExpr::_stype*/ = variable2;
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMType___local_class(variable[4])(variable[4]) /*MMType::local_class*/;
+  /* Register variable[5]: Once expression result */
+  if (once_bool_138) variable[5] = once_value_138;
+  else {
+    /* Register variable[5]: Once String constant */
+    if (once_value_139 != NIT_NULL) variable[5] = once_value_139;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("add"), TAG_Int(3)) /*new String*/;
+      once_value_139 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Register variable[5]: Result */
+    variable[5] = CALL_symbol___String___to_symbol(variable[5])(variable[5]) /*String::to_symbol*/;
+    once_value_138 = variable[5];
+    once_bool_138 = true;
+  }
+  /* Register variable[5]: Result */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[4])(variable[4], variable[5]) /*MMLocalClass::select_method*/;
+  ATTR_typing___AArrayExpr____meth_add(variable[0]) /*AArrayExpr::_meth_add*/ = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = ATTR_typing___AArrayExpr____meth_add(variable[0]) /*AArrayExpr::_meth_add*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_140 != NIT_NULL) variable[5] = once_value_140;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_140 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[5]: Result */
+    variable[5] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_141 != NIT_NULL) variable[5] = once_value_141;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString(" MUST have an add method."), TAG_Int(25)) /*new String*/;
+      once_value_141 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
+  }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label133: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ARangeExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ARangeExpr::after_typing (src/syntax//typing.nit:639,2--654:29)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-      val_t variable5;
-      val_t variable6;
-      val_t variable7;
-      val_t variable8;
-      val_t variable9;
-      val_t variable10;
-      val_t variable11;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((parser_nodes___ARangeExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ARangeExpr___n_expr))( self) /*ARangeExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable1 = variable2;
-  variable3 = ((parser_nodes___ARangeExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___ARangeExpr___n_expr2))( self) /*ARangeExpr::n_expr2*/;
-  variable3 = ((typing___PExpr___stype_t)CALL(variable3,COLOR_syntax_base___PExpr___stype))(variable3) /*PExpr::stype*/;
-  variable2 = variable3;
-  variable3 = TAG_Bool(( variable1 /*ntype*/ ==  NIT_NULL /*null*/) || (( variable1 /*ntype*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*ntype*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*ntype*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*ntype*/,COLOR_kernel___Object_____eqeq))( variable1 /*ntype*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  variable4 = variable3;
-  if (!UNTAG_Bool(variable4)) { /* or */
-    variable4 = TAG_Bool(( variable1 /*ntype*/ ==  NIT_NULL /*null*/) || (( variable1 /*ntype*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*ntype*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*ntype*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*ntype*/,COLOR_kernel___Object_____eqeq))( variable1 /*ntype*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  }
-  variable3 = variable4;
-  if (UNTAG_Bool(variable3)) { /*if*/
-    goto return_label66;
-  }
-  variable3 = ((static_type___MMType_____l_t)CALL( variable1 /*ntype*/,COLOR_static_type___MMType_____l))( variable1 /*ntype*/,  variable2 /*ntype2*/) /*MMType::<*/;
-  if (UNTAG_Bool(variable3)) { /*if*/
-    variable1 =  variable2 /*ntype2*/ /*ntype=*/;
+  struct trace_t trace = {NULL, NULL, 848, LOCATE_typing___ARangeExpr___after_typing};
+      static val_t once_value_143 = NIT_NULL; /* Once value for string variable[6]*/
+      static val_t once_value_144 = NIT_NULL; /* Once value for string variable[6]*/
+      static val_t once_value_145 = NIT_NULL; /* Once value for string variable[6]*/
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ARangeExpr___n_expr(variable[0])(variable[0]) /*ARangeExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+  variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3])) /* Ensure var: Left 'or' operand*/;
+  if (!UNTAG_Bool(variable[3])) { /* or */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ARangeExpr___n_expr2(variable[0])(variable[0]) /*ARangeExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+    variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3]));
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label142;
+  }
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___ARangeExpr___n_expr(variable[0])(variable[0]) /*ARangeExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ARangeExpr___n_expr2(variable[0])(variable[0]) /*ARangeExpr::n_expr2*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___PExpr___stype(variable[5])(variable[5]) /*PExpr::stype*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMType_____l( variable[3] /*ntype*/)( variable[3] /*ntype*/,  variable[4] /*ntype2*/) /*MMType::<*/;
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    variable[3] =  variable[4] /*ntype2*/ /*ntype=*/;
   } else { /*if*/
-    variable3 = ((static_type___MMType_____l_t)CALL( variable2 /*ntype2*/,COLOR_static_type___MMType_____l))( variable2 /*ntype2*/,  variable1 /*ntype*/) /*MMType::<*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable3)))) { /*if*/
-      variable3 = NEW_string___String___init(); /*new String*/
-      variable4 = NEW_string___String___with_native(BOX_NativeString("Type error: "), TAG_Int(12)); /*new String*/
-      variable5 = variable4;
-      ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable5) /*String::append*/;
-      variable6 =  variable1 /*ntype*/;
-      variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable6) /*String::append*/;
-      variable7 = NEW_string___String___with_native(BOX_NativeString(" incompatible with "), TAG_Int(19)); /*new String*/
-      variable8 = variable7;
-      ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable8) /*String::append*/;
-      variable9 =  variable2 /*ntype2*/;
-      variable9 = ((string___String___to_s_t)CALL(variable9,COLOR_string___Object___to_s))(variable9) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable9) /*String::append*/;
-      variable10 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable11 = variable10;
-      ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable11) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable3) /*TypingVisitor::error*/;
-      goto return_label66;
-    }
-  }
-  variable4 = ((syntax_base___AbsSyntaxVisitor___type_discrete_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_discrete))( variable0 /*v*/) /*TypingVisitor::type_discrete*/;
-  variable3 = variable4;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self,  variable1 /*ntype*/,  variable3 /*dtype*/) /*TypingVisitor::check_conform*/;
-  variable4 = ((syntax_base___AbsSyntaxVisitor___type_range_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_range))( variable0 /*v*/,  variable1 /*ntype*/) /*TypingVisitor::type_range*/;
-  ATTR_typing___PExpr____stype( self) /*ARangeExpr::_stype*/ = variable4;
-  return_label66: while(false);
+    /* Register variable[5]: Result */
+    variable[5] = CALL_static_type___MMType_____l( variable[4] /*ntype2*/)( variable[4] /*ntype2*/,  variable[3] /*ntype*/) /*MMType::<*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+      variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[6]: Once String constant */
+      if (once_value_143 != NIT_NULL) variable[6] = once_value_143;
+      else {
+        variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Type error: "), TAG_Int(12)) /*new String*/;
+        once_value_143 = variable[6];
+      }
+      /* Register variable[6]: Result */
+      /* Ensure var variable[6]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+      variable[6] =  variable[3] /*ntype*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[6]: Once String constant */
+      if (once_value_144 != NIT_NULL) variable[6] = once_value_144;
+      else {
+        variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" incompatible with "), TAG_Int(19)) /*new String*/;
+        once_value_144 = variable[6];
+      }
+      /* Register variable[6]: Result */
+      /* Ensure var variable[6]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+      variable[6] =  variable[4] /*ntype2*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[6]: Once String constant */
+      if (once_value_145 != NIT_NULL) variable[6] = once_value_145;
+      else {
+        variable[6] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_145 = variable[6];
+      }
+      /* Register variable[6]: Result */
+      /* Ensure var variable[6]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+      goto return_label142;
+    }
+  }
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___type_discrete( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_discrete*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___ARangeExpr___n_expr(variable[0])(variable[0]) /*ARangeExpr::n_expr*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[6],  variable[5] /*dtype*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+  variable[6] =  TAG_Bool(!UNTAG_Bool(variable[6])) /* Ensure var: Left 'or' operand*/;
+  if (!UNTAG_Bool(variable[6])) { /* or */
+    /* Register variable[6]: Result */
+    variable[6] = CALL_parser_nodes___ARangeExpr___n_expr2(variable[0])(variable[0]) /*ARangeExpr::n_expr2*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[6],  variable[5] /*dtype*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+    variable[6] =  TAG_Bool(!UNTAG_Bool(variable[6]));
+  }
+  /* Register variable[6]: Result */
+  if (UNTAG_Bool(variable[6])) { /*if*/
+    goto return_label142;
+  }
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___AbsSyntaxVisitor___type_range( variable[1] /*v*/)( variable[1] /*v*/,  variable[3] /*ntype*/) /*AbsSyntaxVisitor::type_range*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[6];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label142: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___ASuperExpr___init_in_superclass(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASuperExpr::init_in_superclass (src/syntax//typing.nit:660,2--661:44)"};
-  trace.prev = tracehead; tracehead = &trace;
+val_t typing___ARangeExpr___meth_init(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 847, LOCATE_typing___ARangeExpr___meth_init};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___ARangeExpr____meth_init( self) /*ARangeExpr::_meth_init*/;
+}
+void typing___ACrangeExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 867, LOCATE_typing___ACrangeExpr___after_typing};
+  static val_t once_value_147; static int once_bool_147; /* Once value for variable[4]*/
+    static val_t once_value_148 = NIT_NULL; /* Once value for string variable[4]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___ACrangeExpr___after_typing(variable[0])(variable[0], variable[1]) /*super ACrangeExpr::after_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[0])(variable[0]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_147) variable[4] = once_value_147;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_148 != NIT_NULL) variable[4] = once_value_148;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)) /*new String*/;
+      once_value_148 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_147 = variable[4];
+    once_bool_147 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___ARangeExpr____meth_init(variable[0]) /*ARangeExpr::_meth_init*/ = variable[3];
+  return_label146: while(false);
   tracehead = trace.prev;
-  return ATTR_typing___ASuperExpr____init_in_superclass( self) /*ASuperExpr::_init_in_superclass*/;
+  return;
+}
+void typing___AOrangeExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 874, LOCATE_typing___AOrangeExpr___after_typing};
+  static val_t once_value_150; static int once_bool_150; /* Once value for variable[4]*/
+    static val_t once_value_151 = NIT_NULL; /* Once value for string variable[4]*/
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___AOrangeExpr___after_typing(variable[0])(variable[0], variable[1]) /*super AOrangeExpr::after_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[0])(variable[0]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___local_class(variable[3])(variable[3]) /*MMType::local_class*/;
+  /* Register variable[4]: Once expression result */
+  if (once_bool_150) variable[4] = once_value_150;
+  else {
+    /* Register variable[4]: Once String constant */
+    if (once_value_151 != NIT_NULL) variable[4] = once_value_151;
+    else {
+      variable[4] = NEW_String_string___String___with_native(BOX_NativeString("without_last"), TAG_Int(12)) /*new String*/;
+      once_value_151 = variable[4];
+    }
+    /* Register variable[4]: Result */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_symbol___String___to_symbol(variable[4])(variable[4]) /*String::to_symbol*/;
+    once_value_150 = variable[4];
+    once_bool_150 = true;
+  }
+  /* Register variable[4]: Result */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalClass___select_method(variable[3])(variable[3], variable[4]) /*MMLocalClass::select_method*/;
+  ATTR_typing___ARangeExpr____meth_init(variable[0]) /*ARangeExpr::_meth_init*/ = variable[3];
+  return_label149: while(false);
+  tracehead = trace.prev;
+  return;
 }
 void typing___ASuperExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASuperExpr::after_typing (src/syntax//typing.nit:662,2--713:11)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-      val_t variable3;
-      val_t variable4;
-        val_t variable5;
-          val_t variable6;
-          val_t variable7;
-          val_t variable8;
-          val_t variable9;
-          val_t variable10;
-          val_t variable11;
-          val_t variable12;
-          val_t variable13;
-          val_t variable14;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-  variable2 = ((abstractmetamodel___MMConcreteProperty___cprhe_t)CALL(variable2,COLOR_abstractmetamodel___MMConcreteProperty___cprhe))(variable2) /*MMSrcLocalProperty::cprhe*/;
-  variable2 = ((partial_order___PartialOrderElement___direct_greaters_t)CALL(variable2,COLOR_partial_order___PartialOrderElement___direct_greaters))(variable2) /*PartialOrderElement::direct_greaters*/;
-  variable1 = variable2;
-  variable2 = ((array___AbstractArray___is_empty_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___Collection___is_empty))( variable1 /*precs*/) /*Array::is_empty*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-    variable2 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    ((abstractmetamodel___MMConcreteProperty___need_super__eq_t)CALL(variable2,COLOR_abstractmetamodel___MMConcreteProperty___need_super__eq))(variable2,  TAG_Bool(true)) /*MMSrcLocalProperty::need_super=*/;
+  struct trace_t trace = {NULL, NULL, 886, LOCATE_typing___ASuperExpr___after_typing};
+          static val_t once_value_154 = NIT_NULL; /* Once value for string variable[9]*/
+          static val_t once_value_155 = NIT_NULL; /* Once value for string variable[9]*/
+          static val_t once_value_156 = NIT_NULL; /* Once value for string variable[9]*/
+        static val_t once_value_157 = NIT_NULL; /* Once value for string variable[6]*/
+        static val_t once_value_158 = NIT_NULL; /* Once value for string variable[6]*/
+          static val_t once_value_159 = NIT_NULL; /* Once value for string variable[6]*/
+          static val_t once_value_160 = NIT_NULL; /* Once value for string variable[6]*/
+          static val_t once_value_161 = NIT_NULL; /* Once value for string variable[6]*/
+          static val_t once_value_162 = NIT_NULL; /* Once value for string variable[6]*/
+      static val_t once_value_163 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_164 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[12];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMLocalProperty___prhe(variable[4])(variable[4]) /*MMLocalProperty::prhe*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_partial_order___PartialOrderElement___direct_greaters(variable[4])(variable[4]) /*PartialOrderElement::direct_greaters*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___is_empty( variable[3] /*precs*/)( variable[3] /*precs*/) /*AbstractArrayRead::is_empty*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[4])))) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    CALL_abstractmetamodel___MMLocalProperty___need_super__eq(variable[4])(variable[4],  TAG_Bool(true)) /*MMLocalProperty::need_super=*/;
   } else { /*if*/
-    variable2 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    variable2 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable2,COLOR_abstractmetamodel___MMLocalProperty___global))(variable2) /*MMSrcLocalProperty::global*/;
-    variable2 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable2,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable2) /*MMGlobalProperty::is_init*/;
-    if (UNTAG_Bool(variable2)) { /*if*/
-      variable3 = ((syntax_base___AbsSyntaxVisitor___local_class_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_class))( variable0 /*v*/) /*TypingVisitor::local_class*/;
-      variable4 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-      variable4 = ((abstractmetamodel___MMLocalProperty___name_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___name))(variable4) /*MMSrcLocalProperty::name*/;
-      variable3 = ((abstractmetamodel___MMLocalClass___super_methods_named_t)CALL(variable3,COLOR_abstractmetamodel___MMLocalClass___super_methods_named))(variable3, variable4) /*MMSrcLocalClass::super_methods_named*/;
-      variable2 = variable3;
-      variable3 = ((array___AbstractArray___iterator_t)CALL( variable2 /*base_precs*/,COLOR_abstract_collection___Collection___iterator))( variable2 /*base_precs*/) /*Array::iterator*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstractmetamodel___MMLocalProperty___global(variable[4])(variable[4]) /*MMLocalProperty::global*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[4])(variable[4]) /*MMGlobalProperty::is_init*/;
+    if (UNTAG_Bool(variable[4])) { /*if*/
+      /* Register variable[4]: Local variable */
+      /* Register variable[5]: Result */
+      variable[5] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+      /* Register variable[6]: Result */
+      variable[6] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+      /* Register variable[6]: Result */
+      variable[6] = CALL_abstractmetamodel___MMLocalProperty___name(variable[6])(variable[6]) /*MMLocalProperty::name*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_abstractmetamodel___MMLocalClass___super_methods_named(variable[5])(variable[5], variable[6]) /*MMLocalClass::super_methods_named*/;
+      variable[4] = variable[5];
+      /* Register variable[5]: For iterator */
+      variable[5] = CALL_abstract_collection___Collection___iterator( variable[4] /*base_precs*/)( variable[4] /*base_precs*/) /*AbstractArrayRead::iterator*/;
       while (true) { /*for*/
-        variable4 = ((array___ArrayIterator___is_ok_t)CALL(variable3,COLOR_abstract_collection___Iterator___is_ok))(variable3) /*ArrayIterator::is_ok*/;
-        if (!UNTAG_Bool(variable4)) break; /*for*/
-        variable4 = ((array___ArrayIterator___item_t)CALL(variable3,COLOR_abstract_collection___Iterator___item))(variable3) /*ArrayIterator::item*/;
-        variable5 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable4 /*p*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable4 /*p*/) /*MMLocalProperty::global*/;
-        variable5 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable5,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable5) /*MMGlobalProperty::is_init*/;
-        if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable5)))) { /*if*/
-          variable5 = NEW_string___String___init(); /*new String*/
-          variable6 = NEW_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)); /*new String*/
-          variable7 = variable6;
-          ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable7) /*String::append*/;
-          variable8 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL( variable4 /*p*/,COLOR_abstractmetamodel___MMLocalProperty___local_class))( variable4 /*p*/) /*MMLocalProperty::local_class*/;
-          variable9 = variable8;
-          variable9 = ((string___String___to_s_t)CALL(variable9,COLOR_string___Object___to_s))(variable9) /*String::to_s*/;
-          ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable9) /*String::append*/;
-          variable10 = NEW_string___String___with_native(BOX_NativeString("::"), TAG_Int(2)); /*new String*/
-          variable11 = variable10;
-          ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable11) /*String::append*/;
-          variable12 =  variable4 /*p*/;
-          variable12 = ((string___String___to_s_t)CALL(variable12,COLOR_string___Object___to_s))(variable12) /*String::to_s*/;
-          ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable12) /*String::append*/;
-          variable13 = NEW_string___String___with_native(BOX_NativeString(" is not a constructor."), TAG_Int(22)); /*new String*/
-          variable14 = variable13;
-          ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable14) /*String::append*/;
-          ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable5) /*TypingVisitor::error*/;
+        /* Register variable[6]: For 'is_ok' result */
+        variable[6] = CALL_abstract_collection___Iterator___is_ok(variable[5])(variable[5]) /*ArrayIterator::is_ok*/;
+        if (!UNTAG_Bool(variable[6])) break; /*for*/
+        variable[6] = CALL_abstract_collection___Iterator___item(variable[5])(variable[5]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+        /* Register variable[7]: Local variable */
+        variable[7] = variable[6];
+        /* Register variable[8]: Result */
+        variable[8] = CALL_abstractmetamodel___MMLocalProperty___global( variable[7] /*p*/)( variable[7] /*p*/) /*MMLocalProperty::global*/;
+        /* Register variable[8]: Result */
+        variable[8] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[8])(variable[8]) /*MMGlobalProperty::is_init*/;
+        if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[8])))) { /*if*/
+          variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+          /* Register variable[9]: Once String constant */
+          if (once_value_154 != NIT_NULL) variable[9] = once_value_154;
+          else {
+            variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+            once_value_154 = variable[9];
+          }
+          /* Register variable[9]: Result */
+          /* Ensure var variable[9]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+          /* Register variable[9]: Result */
+          variable[9] = CALL_abstractmetamodel___MMLocalProperty___local_class( variable[7] /*p*/)( variable[7] /*p*/) /*MMLocalProperty::local_class*/;
+          /* Ensure var variable[9]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+          /* Register variable[9]: Once String constant */
+          if (once_value_155 != NIT_NULL) variable[9] = once_value_155;
+          else {
+            variable[9] = NEW_String_string___String___with_native(BOX_NativeString("::"), TAG_Int(2)) /*new String*/;
+            once_value_155 = variable[9];
+          }
+          /* Register variable[9]: Result */
+          /* Ensure var variable[9]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+          variable[9] =  variable[7] /*p*/ /* Ensure var: super-string element*/;
+          CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+          /* Register variable[9]: Once String constant */
+          if (once_value_156 != NIT_NULL) variable[9] = once_value_156;
+          else {
+            variable[9] = NEW_String_string___String___with_native(BOX_NativeString(" is not a constructor."), TAG_Int(22)) /*new String*/;
+            once_value_156 = variable[9];
+          }
+          /* Register variable[9]: Result */
+          /* Ensure var variable[9]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+          /* Register variable[8]: Result */
+          variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+          CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
         } else { /*if*/
-          variable5 = ((typing___TypingVisitor___self_type_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___self_type))( variable0 /*v*/) /*TypingVisitor::self_type*/;
-          variable6 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable4 /*p*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable4 /*p*/) /*MMLocalProperty::global*/;
-          variable5 = ((static_type___MMType___select_property_t)CALL(variable5,COLOR_static_type___MMType___select_property))(variable5, variable6) /*MMType::select_property*/;
-          ((array___AbstractArray___add_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___SimpleCollection___add))( variable1 /*precs*/, variable5) /*Array::add*/;
+          /* Register variable[8]: Result */
+          variable[8] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+          /* Register variable[9]: Result */
+          variable[9] = CALL_abstractmetamodel___MMLocalProperty___global( variable[7] /*p*/)( variable[7] /*p*/) /*MMLocalProperty::global*/;
+          /* Register variable[8]: Result */
+          variable[8] = CALL_abstractmetamodel___MMLocalClass_____bra(variable[8])(variable[8], variable[9]) /*MMLocalClass::[]*/;
+          CALL_abstract_collection___SimpleCollection___add( variable[3] /*precs*/)( variable[3] /*precs*/, variable[8]) /*AbstractArray::add*/;
         }
-        continue_68: while(0);
-        ((array___ArrayIterator___next_t)CALL(variable3,COLOR_abstract_collection___Iterator___next))(variable3) /*ArrayIterator::next*/;
-      }
-      break_68: while(0);
-      variable3 = ((array___AbstractArray___is_empty_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___Collection___is_empty))( variable1 /*precs*/) /*Array::is_empty*/;
-      if (UNTAG_Bool(variable3)) { /*if*/
-        variable3 = NEW_string___String___init(); /*new String*/
-        variable4 = NEW_string___String___with_native(BOX_NativeString("Error: No contructor named "), TAG_Int(27)); /*new String*/
-        variable5 = variable4;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable5) /*String::append*/;
-        variable6 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-        variable6 = ((abstractmetamodel___MMLocalProperty___name_t)CALL(variable6,COLOR_abstractmetamodel___MMLocalProperty___name))(variable6) /*MMSrcLocalProperty::name*/;
-        variable7 = variable6;
-        variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable7) /*String::append*/;
-        variable8 = NEW_string___String___with_native(BOX_NativeString(" in superclasses."), TAG_Int(17)); /*new String*/
-        variable9 = variable8;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable9) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable3) /*TypingVisitor::error*/;
-        goto return_label67;
+        continue_153: while(0);
+        CALL_abstract_collection___Iterator___next(variable[5])(variable[5]) /*ArrayIterator::next*/;
+      }
+      break_153: while(0);
+      /* Register variable[5]: Result */
+      variable[5] = CALL_abstract_collection___Collection___is_empty( variable[3] /*precs*/)( variable[3] /*precs*/) /*AbstractArrayRead::is_empty*/;
+      if (UNTAG_Bool(variable[5])) { /*if*/
+        variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[6]: Once String constant */
+        if (once_value_157 != NIT_NULL) variable[6] = once_value_157;
+        else {
+          variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Error: No contructor named "), TAG_Int(27)) /*new String*/;
+          once_value_157 = variable[6];
+        }
+        /* Register variable[6]: Result */
+        /* Ensure var variable[6]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+        /* Register variable[6]: Result */
+        variable[6] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+        /* Register variable[6]: Result */
+        variable[6] = CALL_abstractmetamodel___MMLocalProperty___name(variable[6])(variable[6]) /*MMLocalProperty::name*/;
+        /* Ensure var variable[6]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[6]: Once String constant */
+        if (once_value_158 != NIT_NULL) variable[6] = once_value_158;
+        else {
+          variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" in superclasses."), TAG_Int(17)) /*new String*/;
+          once_value_158 = variable[6];
+        }
+        /* Register variable[6]: Result */
+        /* Ensure var variable[6]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+        goto return_label152;
       } else { /*if*/
-        variable3 = ((array___AbstractArray___length_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___Collection___length))( variable1 /*precs*/) /*Array::length*/;
-        variable3 = TAG_Bool(UNTAG_Int(variable3)>UNTAG_Int( TAG_Int(1)));
-        if (UNTAG_Bool(variable3)) { /*if*/
-          variable3 = NEW_string___String___init(); /*new String*/
-          variable4 = NEW_string___String___with_native(BOX_NativeString("Error: Conflicting contructors named "), TAG_Int(37)); /*new String*/
-          variable5 = variable4;
-          ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable5) /*String::append*/;
-          variable6 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-          variable6 = ((abstractmetamodel___MMLocalProperty___name_t)CALL(variable6,COLOR_abstractmetamodel___MMLocalProperty___name))(variable6) /*MMSrcLocalProperty::name*/;
-          variable7 = variable6;
-          variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-          ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable7) /*String::append*/;
-          variable8 = NEW_string___String___with_native(BOX_NativeString(" in superclasses: "), TAG_Int(18)); /*new String*/
-          variable9 = variable8;
-          ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable9) /*String::append*/;
-          variable10 = NEW_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)); /*new String*/
-          variable10 = ((string___Collection___join_t)CALL( variable1 /*precs*/,COLOR_string___Collection___join))( variable1 /*precs*/, variable10) /*Array::join*/;
-          variable11 = variable10;
-          ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable11) /*String::append*/;
-          variable12 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-          variable13 = variable12;
-          ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable13) /*String::append*/;
-          ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable3) /*TypingVisitor::error*/;
-          goto return_label67;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_abstract_collection___Collection___length( variable[3] /*precs*/)( variable[3] /*precs*/) /*AbstractArrayRead::length*/;
+        /* Register variable[5]: Result */
+        variable[5] = TAG_Bool(UNTAG_Int(variable[5])>UNTAG_Int( TAG_Int(1)));
+        if (UNTAG_Bool(variable[5])) { /*if*/
+          variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_159 != NIT_NULL) variable[6] = once_value_159;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Error: Conflicting contructors named "), TAG_Int(37)) /*new String*/;
+            once_value_159 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          /* Register variable[6]: Result */
+          variable[6] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+          /* Register variable[6]: Result */
+          variable[6] = CALL_abstractmetamodel___MMLocalProperty___name(variable[6])(variable[6]) /*MMLocalProperty::name*/;
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_160 != NIT_NULL) variable[6] = once_value_160;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" in superclasses: "), TAG_Int(18)) /*new String*/;
+            once_value_160 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_161 != NIT_NULL) variable[6] = once_value_161;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)) /*new String*/;
+            once_value_161 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Register variable[6]: Result */
+          variable[6] = CALL_string___Collection___join( variable[3] /*precs*/)( variable[3] /*precs*/, variable[6]) /*Collection::join*/;
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_162 != NIT_NULL) variable[6] = once_value_162;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+            once_value_162 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          /* Register variable[5]: Result */
+          variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+          CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+          goto return_label152;
         }
       }
-      variable4 = ((abstract_collection___IndexedCollection___first_t)CALL( variable2 /*base_precs*/,COLOR_abstract_collection___Collection___first))( variable2 /*base_precs*/) /*Array::first*/;
-      variable3 = variable4;
-      variable4 = TAG_Bool(( variable3 /*p*/==NIT_NULL) || VAL_ISA( variable3 /*p*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
-      if (!UNTAG_Bool(variable4)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:684,4--24\n"); nit_exit(1);}
-      ATTR_typing___ASuperExpr____init_in_superclass( self) /*ASuperExpr::_init_in_superclass*/ =  variable3 /*p*/;
-      ((typing___ASuperInitCall___register_super_init_call_t)CALL( self,COLOR_typing___ASuperInitCall___register_super_init_call))( self,  variable0 /*v*/,  variable3 /*p*/) /*ASuperExpr::register_super_init_call*/;
-      variable4 = ((parser_nodes___ASuperExpr___n_args_t)CALL( self,COLOR_parser_nodes___ASuperExpr___n_args))( self) /*ASuperExpr::n_args*/;
-      variable4 = ((list___List___length_t)CALL(variable4,COLOR_abstract_collection___Collection___length))(variable4) /*List::length*/;
-      variable4 = TAG_Bool(UNTAG_Int(variable4)>UNTAG_Int( TAG_Int(0)));
-      if (UNTAG_Bool(variable4)) { /*if*/
-        variable4 = ((parser_nodes___ASuperExpr___n_args_t)CALL( self,COLOR_parser_nodes___ASuperExpr___n_args))( self) /*ASuperExpr::n_args*/;
-        variable4 = ((array___Collection___to_a_t)CALL(variable4,COLOR_array___Collection___to_a))(variable4) /*List::to_a*/;
-        variable4 = ((typing___AAbsSendExpr___process_signature_t)CALL( self,COLOR_typing___AAbsSendExpr___process_signature))( self,  variable0 /*v*/,  variable3 /*p*/,  TAG_Bool(true), variable4) /*ASuperExpr::process_signature*/;
-        ATTR_typing___AAbsSendExpr____arguments( self) /*ASuperExpr::_arguments*/ = variable4;
+      /* Register variable[5]: Local variable */
+      /* Register variable[6]: Result */
+      variable[6] = CALL_abstract_collection___Collection___first( variable[4] /*base_precs*/)( variable[4] /*base_precs*/) /*IndexedCollectionRead::first*/;
+      variable[5] = variable[6];
+      /* Register variable[6]: Result */
+      variable[6] = TAG_Bool(( variable[5] /*p*/==NIT_NULL) || VAL_ISA( variable[5] /*p*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
+      if (!UNTAG_Bool(variable[6])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___ASuperExpr___after_typing, LOCATE_typing, 908); nit_exit(1);}
+      ATTR_typing___ASuperExpr____init_in_superclass(variable[0]) /*ASuperExpr::_init_in_superclass*/ =  variable[5] /*p*/;
+      CALL_typing___ASuperInitCall___register_super_init_call(variable[0])(variable[0],  variable[1] /*v*/,  variable[5] /*p*/) /*ASuperInitCall::register_super_init_call*/;
+      /* Register variable[6]: Result */
+      variable[6] = CALL_parser_nodes___ASuperExpr___n_args(variable[0])(variable[0]) /*ASuperExpr::n_args*/;
+      /* Register variable[6]: Result */
+      variable[6] = CALL_abstract_collection___Collection___length(variable[6])(variable[6]) /*List::length*/;
+      /* Register variable[6]: Result */
+      variable[6] = TAG_Bool(UNTAG_Int(variable[6])>UNTAG_Int( TAG_Int(0)));
+      if (UNTAG_Bool(variable[6])) { /*if*/
+        /* Register variable[6]: Local variable */
+        /* Register variable[7]: Result */
+        variable[7] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_syntax_base___Variable___stype(variable[7])(variable[7]) /*Variable::stype*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_typing___AAbsSendExpr___get_signature(variable[0])(variable[0],  variable[1] /*v*/, variable[7],  variable[5] /*p*/,  TAG_Bool(true)) /*AAbsSendExpr::get_signature*/;
+        variable[6] = variable[7];
+        /* Register variable[7]: Result */
+        variable[7] = CALL_abstractmetamodel___MMLocalProperty___name( variable[5] /*p*/)( variable[5] /*p*/) /*MMLocalProperty::name*/;
+        /* Register variable[8]: Result */
+        variable[8] = CALL_parser_nodes___ASuperExpr___n_args(variable[0])(variable[0]) /*ASuperExpr::n_args*/;
+        /* Register variable[8]: Result */
+        variable[8] = CALL_array___Collection___to_a(variable[8])(variable[8]) /*Collection::to_a*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_typing___AAbsAbsSendExpr___process_signature(variable[0])(variable[0],  variable[1] /*v*/,  variable[6] /*signature*/, variable[7], variable[8]) /*AAbsAbsSendExpr::process_signature*/;
+        ATTR_typing___AAbsAbsSendExpr____arguments(variable[0]) /*AAbsAbsSendExpr::_arguments*/ = variable[7];
       }
     } else { /*if*/
-      variable2 = NEW_string___String___init(); /*new String*/
-      variable3 = NEW_string___String___with_native(BOX_NativeString("Error: No super method to call for "), TAG_Int(35)); /*new String*/
-      variable4 = variable3;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable4) /*String::append*/;
-      variable5 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-      variable6 = variable5;
-      variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable6) /*String::append*/;
-      variable7 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable8 = variable7;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable8) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
-      goto return_label67;
-    }
-  }
-  variable2 = ((abstract_collection___IndexedCollection___first_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___Collection___first))( variable1 /*precs*/) /*Array::first*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMLocalProperty::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*MMType::==*/)))))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable3 = NEW_array___Array___init(); /*new Array[MMType]*/
-    variable2 = variable3;
-    variable3 = NIT_NULL /*decl variable stype*/;
-    variable4 = ((array___AbstractArray___iterator_t)CALL( variable1 /*precs*/,COLOR_abstract_collection___Collection___iterator))( variable1 /*precs*/) /*Array::iterator*/;
+      variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[5]: Once String constant */
+      if (once_value_163 != NIT_NULL) variable[5] = once_value_163;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: No super method to call for "), TAG_Int(35)) /*new String*/;
+        once_value_163 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[5]: Once String constant */
+      if (once_value_164 != NIT_NULL) variable[5] = once_value_164;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_164 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+      /* Register variable[4]: Result */
+      variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
+      goto return_label152;
+    }
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___first( variable[3] /*precs*/)( variable[3] /*precs*/) /*IndexedCollectionRead::first*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___Variable___stype(variable[5])(variable[5]) /*Variable::stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMLocalProperty___signature_for(variable[4])(variable[4], variable[5]) /*MMLocalProperty::signature_for*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMSignature___return_type(variable[4])(variable[4]) /*MMSignature::return_type*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Local variable */
+    /* Register variable[5]: Result */
+    variable[5] = NEW_Array_array___Array___init() /*new Array[MMType]*/;
+    variable[4] = variable[5];
+    /* Register variable[5]: Local variable */
+    variable[5] =  NIT_NULL /*null*/;
+    /* Register variable[6]: For iterator */
+    variable[6] = CALL_abstract_collection___Collection___iterator( variable[3] /*precs*/)( variable[3] /*precs*/) /*AbstractArrayRead::iterator*/;
     while (true) { /*for*/
-      variable5 = ((array___ArrayIterator___is_ok_t)CALL(variable4,COLOR_abstract_collection___Iterator___is_ok))(variable4) /*ArrayIterator::is_ok*/;
-      if (!UNTAG_Bool(variable5)) break; /*for*/
-      variable5 = ((array___ArrayIterator___item_t)CALL(variable4,COLOR_abstract_collection___Iterator___item))(variable4) /*ArrayIterator::item*/;
-      variable6 = TAG_Bool(( variable5 /*prop*/==NIT_NULL) || VAL_ISA( variable5 /*prop*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
-      if (!UNTAG_Bool(variable6)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:699,5--28\n"); nit_exit(1);}
-      variable7 = ((genericity___MMLocalProperty___signature_t)CALL( variable5 /*prop*/,COLOR_static_type___MMLocalProperty___signature))( variable5 /*prop*/) /*MMMethod::signature*/;
-      variable7 = ((static_type___MMSignature___return_type_t)CALL(variable7,COLOR_static_type___MMSignature___return_type))(variable7) /*MMSignature::return_type*/;
-      variable8 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-      variable7 = ((static_type___MMType___for_module_t)CALL(variable7,COLOR_static_type___MMType___for_module))(variable7, variable8) /*MMType::for_module*/;
-      variable8 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-      variable8 = ((genericity___MMLocalProperty___signature_t)CALL(variable8,COLOR_static_type___MMLocalProperty___signature))(variable8) /*MMSrcLocalProperty::signature*/;
-      variable8 = ((static_type___MMSignature___recv_t)CALL(variable8,COLOR_static_type___MMSignature___recv))(variable8) /*MMSignature::recv*/;
-      variable7 = ((static_type___MMType___adapt_to_t)CALL(variable7,COLOR_static_type___MMType___adapt_to))(variable7, variable8) /*MMType::adapt_to*/;
-      variable6 = variable7;
-      ((array___AbstractArray___add_t)CALL( variable2 /*stypes*/,COLOR_abstract_collection___SimpleCollection___add))( variable2 /*stypes*/,  variable6 /*t*/) /*Array::add*/;
-      variable7 = TAG_Bool(( variable3 /*stype*/ ==  NIT_NULL /*null*/) || (( variable3 /*stype*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*stype*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*stype*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*stype*/,COLOR_kernel___Object_____eqeq))( variable3 /*stype*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-      variable8 = variable7;
-      if (!UNTAG_Bool(variable8)) { /* or */
-        variable8 = ((static_type___MMType_____l_t)CALL( variable3 /*stype*/,COLOR_static_type___MMType_____l))( variable3 /*stype*/,  variable6 /*t*/) /*MMType::<*/;
-      }
-      variable7 = variable8;
-      if (UNTAG_Bool(variable7)) { /*if*/
-        variable3 =  variable6 /*t*/ /*stype=*/;
-      }
-      continue_69: while(0);
-      ((array___ArrayIterator___next_t)CALL(variable4,COLOR_abstract_collection___Iterator___next))(variable4) /*ArrayIterator::next*/;
-    }
-    break_69: while(0);
-    variable4 = ((array___AbstractArray___iterator_t)CALL( variable2 /*stypes*/,COLOR_abstract_collection___Collection___iterator))( variable2 /*stypes*/) /*Array::iterator*/;
+      /* Register variable[7]: For 'is_ok' result */
+      variable[7] = CALL_abstract_collection___Iterator___is_ok(variable[6])(variable[6]) /*ArrayIterator::is_ok*/;
+      if (!UNTAG_Bool(variable[7])) break; /*for*/
+      variable[7] = CALL_abstract_collection___Iterator___item(variable[6])(variable[6]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+      /* Register variable[8]: Local variable */
+      variable[8] = variable[7];
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Bool(( variable[8] /*prop*/==NIT_NULL) || VAL_ISA( variable[8] /*prop*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
+      if (!UNTAG_Bool(variable[9])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___ASuperExpr___after_typing, LOCATE_typing, 924); nit_exit(1);}
+      /* Register variable[9]: Local variable */
+      /* Register variable[10]: Result */
+      variable[10] = CALL_typing___TypingVisitor___self_var( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::self_var*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_syntax_base___Variable___stype(variable[10])(variable[10]) /*Variable::stype*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_static_type___MMLocalProperty___signature_for( variable[8] /*prop*/)( variable[8] /*prop*/, variable[10]) /*MMLocalProperty::signature_for*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_static_type___MMSignature___return_type(variable[10])(variable[10]) /*MMSignature::return_type*/;
+      /* Register variable[11]: Result */
+      variable[11] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_static_type___MMType___for_module(variable[10])(variable[10], variable[11]) /*MMType::for_module*/;
+      /* Register variable[11]: Result */
+      variable[11] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+      /* Register variable[11]: Result */
+      variable[11] = CALL_static_type___MMLocalProperty___signature(variable[11])(variable[11]) /*MMLocalProperty::signature*/;
+      /* Register variable[11]: Result */
+      variable[11] = CALL_static_type___MMSignature___recv(variable[11])(variable[11]) /*MMSignature::recv*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_static_type___MMType___adapt_to(variable[10])(variable[10], variable[11]) /*MMType::adapt_to*/;
+      variable[9] = variable[10];
+      CALL_abstract_collection___SimpleCollection___add( variable[4] /*stypes*/)( variable[4] /*stypes*/,  variable[9] /*t*/) /*AbstractArray::add*/;
+      /* Register variable[10]: Result */
+      variable[10] = TAG_Bool(( variable[5] /*stype*/ ==  NIT_NULL /*null*/) || (( variable[5] /*stype*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*stype*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*stype*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*stype*/)( variable[5] /*stype*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+      /* Ensure var variable[10]: Left 'or' operand*/
+      if (!UNTAG_Bool(variable[10])) { /* or */
+        /* Register variable[10]: Result */
+        variable[10] = CALL_static_type___MMType_____l( variable[5] /*stype*/)( variable[5] /*stype*/,  variable[9] /*t*/) /*MMType::<*/;
+      }
+      /* Register variable[10]: Result */
+      if (UNTAG_Bool(variable[10])) { /*if*/
+        variable[5] =  variable[9] /*t*/ /*stype=*/;
+      }
+      continue_165: while(0);
+      CALL_abstract_collection___Iterator___next(variable[6])(variable[6]) /*ArrayIterator::next*/;
+    }
+    break_165: while(0);
+    /* Register variable[6]: For iterator */
+    variable[6] = CALL_abstract_collection___Collection___iterator( variable[4] /*stypes*/)( variable[4] /*stypes*/) /*AbstractArrayRead::iterator*/;
     while (true) { /*for*/
-      variable5 = ((array___ArrayIterator___is_ok_t)CALL(variable4,COLOR_abstract_collection___Iterator___is_ok))(variable4) /*ArrayIterator::is_ok*/;
-      if (!UNTAG_Bool(variable5)) break; /*for*/
-      variable5 = ((array___ArrayIterator___item_t)CALL(variable4,COLOR_abstract_collection___Iterator___item))(variable4) /*ArrayIterator::item*/;
-      ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self,  variable5 /*t*/,  variable3 /*stype*/) /*TypingVisitor::check_conform*/;
-      continue_70: while(0);
-      ((array___ArrayIterator___next_t)CALL(variable4,COLOR_abstract_collection___Iterator___next))(variable4) /*ArrayIterator::next*/;
+      /* Register variable[7]: For 'is_ok' result */
+      variable[7] = CALL_abstract_collection___Iterator___is_ok(variable[6])(variable[6]) /*ArrayIterator::is_ok*/;
+      if (!UNTAG_Bool(variable[7])) break; /*for*/
+      variable[7] = CALL_abstract_collection___Iterator___item(variable[6])(variable[6]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+      /* Register variable[8]: Local variable */
+      variable[8] = variable[7];
+      CALL_syntax_base___AbsSyntaxVisitor___check_conform( variable[1] /*v*/)( variable[1] /*v*/, variable[0],  variable[8] /*t*/,  variable[5] /*stype*/) /*AbsSyntaxVisitor::check_conform*/;
+      continue_166: while(0);
+      CALL_abstract_collection___Iterator___next(variable[6])(variable[6]) /*ArrayIterator::next*/;
     }
-    break_70: while(0);
-    ATTR_typing___PExpr____stype( self) /*ASuperExpr::_stype*/ =  variable3 /*stype*/;
+    break_166: while(0);
+    ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ =  variable[5] /*stype*/;
   }
-  variable3 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-  variable2 = variable3;
-  variable3 = TAG_Bool(( variable2 /*p*/==NIT_NULL) || VAL_ISA( variable2 /*p*/, COLOR_MMSrcMethod, ID_MMSrcMethod)) /*cast MMSrcMethod*/;
-  if (!UNTAG_Bool(variable3)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:712,3--26\n"); nit_exit(1);}
-  ATTR_typing___AAbsSendExpr____prop( self) /*ASuperExpr::_prop*/ =  variable2 /*p*/;
-  return_label67: while(false);
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(( variable[4] /*p*/==NIT_NULL) || VAL_ISA( variable[4] /*p*/, COLOR_MMSrcMethod, ID_MMSrcMethod)) /*cast MMSrcMethod*/;
+  if (!UNTAG_Bool(variable[5])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___ASuperExpr___after_typing, LOCATE_typing, 937); nit_exit(1);}
+  ATTR_typing___AAbsSendExpr____prop(variable[0]) /*AAbsSendExpr::_prop*/ =  variable[4] /*p*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label152: while(false);
   tracehead = trace.prev;
   return;
 }
+val_t typing___ASuperExpr___init_in_superclass(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 884, LOCATE_typing___ASuperExpr___init_in_superclass};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___ASuperExpr____init_in_superclass( self) /*ASuperExpr::_init_in_superclass*/;
+}
 val_t typing___AAttrFormExpr___prop(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AAttrFormExpr::prop (src/syntax//typing.nit:718,2--719:33)"};
+  struct trace_t trace = {NULL, NULL, 944, LOCATE_typing___AAttrFormExpr___prop};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___AAttrFormExpr____prop( self) /*AAttrFormExpr::_prop*/;
 }
+val_t typing___AAttrFormExpr___attr_type(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 947, LOCATE_typing___AAttrFormExpr___attr_type};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AAttrFormExpr____attr_type( self) /*AAttrFormExpr::_attr_type*/;
+}
 void typing___AAttrFormExpr___do_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAttrFormExpr::do_typing (src/syntax//typing.nit:721,2--736:14)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-    val_t variable5;
-    val_t variable6;
-    val_t variable7;
-    val_t variable8;
-    val_t variable9;
-    val_t variable10;
-    val_t variable11;
-    val_t variable12;
-      val_t variable13;
-      val_t variable14;
-      val_t variable15;
-      val_t variable16;
-      val_t variable17;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((parser_nodes___AAttrFormExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrFormExpr___n_expr))( self) /*AAttrFormExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(( variable1 /*type_recv*/ ==  NIT_NULL /*null*/) || (( variable1 /*type_recv*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*type_recv*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*type_recv*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*type_recv*/,COLOR_kernel___Object_____eqeq))( variable1 /*type_recv*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    goto return_label71;
+  struct trace_t trace = {NULL, NULL, 950, LOCATE_typing___AAttrFormExpr___do_typing};
+    static val_t once_value_168 = NIT_NULL; /* Once value for string variable[7]*/
+    static val_t once_value_169 = NIT_NULL; /* Once value for string variable[7]*/
+    static val_t once_value_170 = NIT_NULL; /* Once value for string variable[7]*/
+    static val_t once_value_171 = NIT_NULL; /* Once value for string variable[8]*/
+    static val_t once_value_172 = NIT_NULL; /* Once value for string variable[8]*/
+    static val_t once_value_173 = NIT_NULL; /* Once value for string variable[8]*/
+    static val_t once_value_174 = NIT_NULL; /* Once value for string variable[8]*/
+  val_t variable[9];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAttrFormExpr___n_expr(variable[0])(variable[0]) /*AAttrFormExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label167;
   }
-  variable3 = ((parser_nodes___AAttrFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___AAttrFormExpr___n_id))( self) /*AAttrFormExpr::n_id*/;
-  variable3 = ((syntax_base___Token___to_symbol_t)CALL(variable3,COLOR_syntax_base___Token___to_symbol))(variable3) /*TAttrid::to_symbol*/;
-  variable2 = variable3;
-  variable4 = ((static_type___MMType___select_attribute_t)CALL( variable1 /*type_recv*/,COLOR_static_type___MMType___select_attribute))( variable1 /*type_recv*/,  variable2 /*name*/) /*MMType::select_attribute*/;
-  variable3 = variable4;
-  variable4 = TAG_Bool(( variable3 /*prop*/ ==  NIT_NULL /*null*/) || (( variable3 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*prop*/,COLOR_kernel___Object_____eqeq))( variable3 /*prop*/,  NIT_NULL /*null*/) /*MMAttribute::==*/)))));
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable4 = NEW_string___String___init(); /*new String*/
-    variable5 = NEW_string___String___with_native(BOX_NativeString("Error: Attribute "), TAG_Int(17)); /*new String*/
-    variable6 = variable5;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-    variable7 =  variable2 /*name*/;
-    variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable7) /*String::append*/;
-    variable8 = NEW_string___String___with_native(BOX_NativeString(" doesn't exists in "), TAG_Int(19)); /*new String*/
-    variable9 = variable8;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable9) /*String::append*/;
-    variable10 =  variable1 /*type_recv*/;
-    variable10 = ((string___String___to_s_t)CALL(variable10,COLOR_string___Object___to_s))(variable10) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable10) /*String::append*/;
-    variable11 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-    variable12 = variable11;
-    ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable12) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-    goto return_label71;
-  } else { /*if*/
-    variable4 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-    variable5 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable3 /*prop*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable3 /*prop*/) /*MMAttribute::global*/;
-    variable5 = ((abstractmetamodel___MMGlobalProperty___local_class_t)CALL(variable5,COLOR_abstractmetamodel___MMGlobalProperty___local_class))(variable5) /*MMGlobalProperty::local_class*/;
-    variable5 = ((abstractmetamodel___MMLocalClass___module_t)CALL(variable5,COLOR_abstractmetamodel___MMLocalClass___module))(variable5) /*MMLocalClass::module*/;
-    variable4 = ((abstractmetamodel___MMModule___visibility_for_t)CALL(variable4,COLOR_abstractmetamodel___MMModule___visibility_for))(variable4, variable5) /*MMSrcModule::visibility_for*/;
-    variable4 = TAG_Bool(UNTAG_Int(variable4)<UNTAG_Int( TAG_Int(3)));
-    if (UNTAG_Bool(variable4)) { /*if*/
-      variable4 = NEW_string___String___init(); /*new String*/
-      variable5 = NEW_string___String___with_native(BOX_NativeString("Error: Attribute "), TAG_Int(17)); /*new String*/
-      variable6 = variable5;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-      variable7 =  variable2 /*name*/;
-      variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable7) /*String::append*/;
-      variable8 = NEW_string___String___with_native(BOX_NativeString(" from "), TAG_Int(6)); /*new String*/
-      variable9 = variable8;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable9) /*String::append*/;
-      variable10 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable3 /*prop*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable3 /*prop*/) /*MMAttribute::global*/;
-      variable10 = ((abstractmetamodel___MMGlobalProperty___local_class_t)CALL(variable10,COLOR_abstractmetamodel___MMGlobalProperty___local_class))(variable10) /*MMGlobalProperty::local_class*/;
-      variable10 = ((abstractmetamodel___MMLocalClass___module_t)CALL(variable10,COLOR_abstractmetamodel___MMLocalClass___module))(variable10) /*MMLocalClass::module*/;
-      variable11 = variable10;
-      variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable11) /*String::append*/;
-      variable12 = NEW_string___String___with_native(BOX_NativeString(" is invisible in "), TAG_Int(17)); /*new String*/
-      variable13 = variable12;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable13) /*String::append*/;
-      variable14 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-      variable15 = variable14;
-      variable15 = ((string___String___to_s_t)CALL(variable15,COLOR_string___Object___to_s))(variable15) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable15) /*String::append*/;
-      variable16 = NEW_string___String___with_native(BOX_NativeString(""), TAG_Int(0)); /*new String*/
-      variable17 = variable16;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable17) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-    }
-  }
-  ATTR_typing___AAttrFormExpr____prop( self) /*AAttrFormExpr::_prop*/ =  variable3 /*prop*/;
-  return_label71: while(false);
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAttrFormExpr___n_expr(variable[0])(variable[0]) /*AAttrFormExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AAttrFormExpr___n_id(variable[0])(variable[0]) /*AAttrFormExpr::n_id*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___Token___to_symbol(variable[5])(variable[5]) /*Token::to_symbol*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_static_type___MMType___local_class( variable[3] /*type_recv*/)( variable[3] /*type_recv*/) /*MMType::local_class*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalClass___has_global_property_by_name( variable[5] /*lc*/)( variable[5] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::has_global_property_by_name*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    variable[6] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_168 != NIT_NULL) variable[7] = once_value_168;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Error: Attribute "), TAG_Int(17)) /*new String*/;
+      once_value_168 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    variable[7] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_169 != NIT_NULL) variable[7] = once_value_169;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString(" doesn't exists in "), TAG_Int(19)) /*new String*/;
+      once_value_169 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    variable[7] =  variable[3] /*type_recv*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[7]: Once String constant */
+    if (once_value_170 != NIT_NULL) variable[7] = once_value_170;
+    else {
+      variable[7] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+      once_value_170 = variable[7];
+    }
+    /* Register variable[7]: Result */
+    /* Ensure var variable[7]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[6])(variable[6], variable[7]) /*AbstractArray::add*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[6]) /*AbsSyntaxVisitor::error*/;
+    goto return_label167;
+  }
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalClass___select_attribute( variable[5] /*lc*/)( variable[5] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::select_attribute*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalProperty___global( variable[6] /*prop*/)( variable[6] /*prop*/) /*MMLocalProperty::global*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMGlobalProperty___local_class(variable[8])(variable[8]) /*MMGlobalProperty::local_class*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalClass___module(variable[8])(variable[8]) /*MMLocalClass::module*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMModule___visibility_for(variable[7])(variable[7], variable[8]) /*MMModule::visibility_for*/;
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool(UNTAG_Int(variable[7])<UNTAG_Int( TAG_Int(3)));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(7)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_171 != NIT_NULL) variable[8] = once_value_171;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Error: Attribute "), TAG_Int(17)) /*new String*/;
+      once_value_171 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    variable[8] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_172 != NIT_NULL) variable[8] = once_value_172;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" from "), TAG_Int(6)) /*new String*/;
+      once_value_172 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMLocalProperty___global( variable[6] /*prop*/)( variable[6] /*prop*/) /*MMLocalProperty::global*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMGlobalProperty___local_class(variable[8])(variable[8]) /*MMGlobalProperty::local_class*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMLocalClass___module(variable[8])(variable[8]) /*MMLocalClass::module*/;
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_173 != NIT_NULL) variable[8] = once_value_173;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" is invisible in "), TAG_Int(17)) /*new String*/;
+      once_value_173 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_174 != NIT_NULL) variable[8] = once_value_174;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+      once_value_174 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+  }
+  ATTR_typing___AAttrFormExpr____prop(variable[0]) /*AAttrFormExpr::_prop*/ =  variable[6] /*prop*/;
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMLocalProperty___signature_for( variable[6] /*prop*/)( variable[6] /*prop*/,  variable[3] /*type_recv*/) /*MMLocalProperty::signature_for*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMSignature___return_type(variable[8])(variable[8]) /*MMSignature::return_type*/;
+  variable[7] = variable[8];
+  /* Register variable[8]: Result */
+  variable[8] = CALL_parser_nodes___AAttrFormExpr___n_expr(variable[0])(variable[0]) /*AAttrFormExpr::n_expr*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_typing___PExpr___is_self(variable[8])(variable[8]) /*PExpr::is_self*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[8])))) { /*if*/
+    /* Register variable[8]: Result */
+    variable[8] = CALL_static_type___MMType___not_for_self( variable[7] /*at*/)( variable[7] /*at*/) /*MMType::not_for_self*/;
+    variable[7] = variable[8] /*at=*/;
+  }
+  ATTR_typing___AAttrFormExpr____attr_type(variable[0]) /*AAttrFormExpr::_attr_type*/ =  variable[7] /*at*/;
+  return_label167: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AAttrExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAttrExpr::after_typing (src/syntax//typing.nit:741,2--749:20)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((typing___AAttrFormExpr___do_typing_t)CALL( self,COLOR_typing___AAttrFormExpr___do_typing))( self,  variable0 /*v*/) /*AAttrExpr::do_typing*/;
-  variable1 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrExpr::prop*/;
-  variable1 = TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*MMAttribute::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    goto return_label72;
-  }
-  variable2 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrExpr::prop*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMAttribute::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AAttrFormExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrFormExpr___n_expr))( self) /*AAttrExpr::n_expr*/;
-  variable2 = ((typing___PExpr___is_self_t)CALL(variable2,COLOR_typing___PExpr___is_self))(variable2) /*PExpr::is_self*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-    variable2 = ((static_type___MMType___not_for_self_t)CALL( variable1 /*attr_type*/,COLOR_static_type___MMType___not_for_self))( variable1 /*attr_type*/) /*MMType::not_for_self*/;
-    variable1 = variable2 /*attr_type=*/;
+  struct trace_t trace = {NULL, NULL, 973, LOCATE_typing___AAttrExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_typing___AAttrFormExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/) /*AAttrFormExpr::do_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___prop(variable[0])(variable[0]) /*AAttrFormExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label175;
   }
-  ATTR_typing___PExpr____stype( self) /*AAttrExpr::_stype*/ =  variable1 /*attr_type*/;
-  return_label72: while(false);
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___attr_type(variable[0])(variable[0]) /*AAttrFormExpr::attr_type*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label175: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AAttrAssignExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAttrAssignExpr::after_typing (src/syntax//typing.nit:754,2--762:48)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((typing___AAttrFormExpr___do_typing_t)CALL( self,COLOR_typing___AAttrFormExpr___do_typing))( self,  variable0 /*v*/) /*AAttrAssignExpr::do_typing*/;
-  variable1 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrAssignExpr::prop*/;
-  variable1 = TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*MMAttribute::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    goto return_label73;
-  }
-  variable2 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrAssignExpr::prop*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMAttribute::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AAttrFormExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrFormExpr___n_expr))( self) /*AAttrAssignExpr::n_expr*/;
-  variable2 = ((typing___PExpr___is_self_t)CALL(variable2,COLOR_typing___PExpr___is_self))(variable2) /*PExpr::is_self*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-    variable2 = ((static_type___MMType___not_for_self_t)CALL( variable1 /*attr_type*/,COLOR_static_type___MMType___not_for_self))( variable1 /*attr_type*/) /*MMType::not_for_self*/;
-    variable1 = variable2 /*attr_type=*/;
-  }
-  variable2 = ((parser_nodes___AAssignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_value))( self) /*AAttrAssignExpr::n_value*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable2,  variable1 /*attr_type*/) /*TypingVisitor::check_conform*/;
-  return_label73: while(false);
+  struct trace_t trace = {NULL, NULL, 983, LOCATE_typing___AAttrAssignExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_typing___AAttrFormExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/) /*AAttrFormExpr::do_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___prop(variable[0])(variable[0]) /*AAttrFormExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label176;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___AAttrFormExpr___attr_type(variable[0])(variable[0]) /*AAttrFormExpr::attr_type*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3], variable[4]) /*AbsSyntaxVisitor::check_conform_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label176;
+  }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label176: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AAttrReassignExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AAttrReassignExpr::after_typing (src/syntax//typing.nit:767,2--775:31)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((typing___AAttrFormExpr___do_typing_t)CALL( self,COLOR_typing___AAttrFormExpr___do_typing))( self,  variable0 /*v*/) /*AAttrReassignExpr::do_typing*/;
-  variable1 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrReassignExpr::prop*/;
-  variable1 = TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*MMAttribute::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    goto return_label74;
-  }
-  variable2 = ((typing___AAttrFormExpr___prop_t)CALL( self,COLOR_typing___AAttrFormExpr___prop))( self) /*AAttrReassignExpr::prop*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMAttribute::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___AAttrFormExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AAttrFormExpr___n_expr))( self) /*AAttrReassignExpr::n_expr*/;
-  variable2 = ((typing___PExpr___is_self_t)CALL(variable2,COLOR_typing___PExpr___is_self))(variable2) /*PExpr::is_self*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-    variable2 = ((static_type___MMType___not_for_self_t)CALL( variable1 /*attr_type*/,COLOR_static_type___MMType___not_for_self))( variable1 /*attr_type*/) /*MMType::not_for_self*/;
-    variable1 = variable2 /*attr_type=*/;
-  }
-  ((typing___AReassignFormExpr___do_lvalue_typing_t)CALL( self,COLOR_typing___AReassignFormExpr___do_lvalue_typing))( self,  variable0 /*v*/,  variable1 /*attr_type*/) /*AAttrReassignExpr::do_lvalue_typing*/;
-  return_label74: while(false);
-  tracehead = trace.prev;
-  return;
-}
-void typing___AAbsSendExpr___do_typing(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3, val_t  param4, val_t  param5) {
-  struct trace_t trace = {NULL, "typing::AAbsSendExpr::do_typing (src/syntax//typing.nit:781,2--789:19)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-  val_t variable6;
-  val_t variable7;
-  val_t variable8;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 =  param2;
-  variable3 =  param3;
-  variable4 =  param4;
-  variable5 =  param5;
-  variable7 = ((typing___AAbsSendExpr___get_property_t)CALL( self,COLOR_typing___AAbsSendExpr___get_property))( self,  variable0 /*v*/,  variable1 /*type_recv*/,  variable2 /*is_implicit_self*/,  variable4 /*name*/) /*AAbsSendExpr::get_property*/;
-  variable6 = variable7;
-  variable7 = TAG_Bool(( variable6 /*prop*/ ==  NIT_NULL /*null*/) || (( variable6 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable6 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable6 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable6 /*prop*/,COLOR_kernel___Object_____eqeq))( variable6 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable7)) { /*if*/
-    goto return_label75;
-  }
-  variable8 = ((typing___AAbsSendExpr___process_signature_t)CALL( self,COLOR_typing___AAbsSendExpr___process_signature))( self,  variable0 /*v*/,  variable6 /*prop*/,  variable3 /*recv_is_self*/,  variable5 /*raw_args*/) /*AAbsSendExpr::process_signature*/;
-  variable7 = variable8;
-  variable8 = TAG_Bool(( variable7 /*args*/ ==  NIT_NULL /*null*/) || (( variable7 /*args*/ != NIT_NULL) && UNTAG_Bool(((array___AbstractArray_____eqeq_t)CALL( variable7 /*args*/,COLOR_kernel___Object_____eqeq))( variable7 /*args*/,  NIT_NULL /*null*/) /*Array::==*/)));
-  if (UNTAG_Bool(variable8)) { /*if*/
-    goto return_label75;
-  }
-  ATTR_typing___AAbsSendExpr____prop( self) /*AAbsSendExpr::_prop*/ =  variable6 /*prop*/;
-  ATTR_typing___AAbsSendExpr____arguments( self) /*AAbsSendExpr::_arguments*/ =  variable7 /*args*/;
-  return_label75: while(false);
+  struct trace_t trace = {NULL, NULL, 993, LOCATE_typing___AAttrReassignExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_typing___AAttrFormExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/) /*AAttrFormExpr::do_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___prop(variable[0])(variable[0]) /*AAttrFormExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label177;
+  }
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___AAttrFormExpr___attr_type(variable[0])(variable[0]) /*AAttrFormExpr::attr_type*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___AReassignFormExpr___do_rvalue_typing(variable[0])(variable[0],  variable[1] /*v*/, variable[4]) /*AReassignFormExpr::do_rvalue_typing*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*t*/ ==  NIT_NULL /*null*/) || (( variable[3] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*t*/)( variable[3] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label177;
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform( variable[1] /*v*/)( variable[1] /*v*/, variable[0],  variable[3] /*t*/, variable[4]) /*AbsSyntaxVisitor::check_conform*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label177: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t typing___AAbsSendExpr___get_property(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
-  struct trace_t trace = {NULL, "typing::AAbsSendExpr::get_property (src/syntax//typing.nit:792,2--816:13)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-  val_t variable6;
-      val_t variable7;
-      val_t variable8;
-      val_t variable9;
-      val_t variable10;
-      val_t variable11;
-      val_t variable12;
-      val_t variable13;
-      val_t variable14;
-      val_t variable15;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 =  param2;
-  variable3 =  param3;
-  variable4 = TAG_Bool(( variable1 /*type_recv*/ ==  NIT_NULL /*null*/) || (( variable1 /*type_recv*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*type_recv*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*type_recv*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*type_recv*/,COLOR_kernel___Object_____eqeq))( variable1 /*type_recv*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable4 =  NIT_NULL /*null*/;
-    goto return_label76;
-  }
-  variable5 = ((static_type___MMType___select_method_t)CALL( variable1 /*type_recv*/,COLOR_static_type___MMType___select_method))( variable1 /*type_recv*/,  variable3 /*name*/) /*MMType::select_method*/;
-  variable4 = variable5;
-  variable5 = TAG_Bool(( variable4 /*prop*/ ==  NIT_NULL /*null*/) || (( variable4 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable4 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable4 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable4 /*prop*/,COLOR_kernel___Object_____eqeq))( variable4 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  variable6 = variable5;
-  if (UNTAG_Bool(variable6)) { /* and */
-    variable6 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    variable6 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable6,COLOR_abstractmetamodel___MMLocalProperty___global))(variable6) /*MMSrcLocalProperty::global*/;
-    variable6 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable6,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable6) /*MMGlobalProperty::is_init*/;
-  }
-  variable5 = variable6;
-  if (UNTAG_Bool(variable5)) { /*if*/
-    variable6 = ((static_type___MMType___local_class_t)CALL( variable1 /*type_recv*/,COLOR_static_type___MMType___local_class))( variable1 /*type_recv*/) /*MMType::local_class*/;
-    variable6 = ((abstractmetamodel___MMLocalClass___super_methods_named_t)CALL(variable6,COLOR_abstractmetamodel___MMLocalClass___super_methods_named))(variable6,  variable3 /*name*/) /*MMLocalClass::super_methods_named*/;
-    variable5 = variable6;
-    variable6 = ((array___AbstractArray___length_t)CALL( variable5 /*props*/,COLOR_abstract_collection___Collection___length))( variable5 /*props*/) /*Array::length*/;
-    variable6 = TAG_Bool(UNTAG_Int(variable6)>UNTAG_Int( TAG_Int(1)));
-    if (UNTAG_Bool(variable6)) { /*if*/
-      variable6 = NEW_string___String___init(); /*new String*/
-      variable7 = NEW_string___String___with_native(BOX_NativeString("Error: Ambigous method name '"), TAG_Int(29)); /*new String*/
-      variable8 = variable7;
-      ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable8) /*String::append*/;
-      variable9 =  variable3 /*name*/;
-      variable9 = ((string___String___to_s_t)CALL(variable9,COLOR_string___Object___to_s))(variable9) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable9) /*String::append*/;
-      variable10 = NEW_string___String___with_native(BOX_NativeString("' for "), TAG_Int(6)); /*new String*/
-      variable11 = variable10;
-      ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable11) /*String::append*/;
-      variable12 = NEW_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)); /*new String*/
-      variable12 = ((string___Collection___join_t)CALL( variable5 /*props*/,COLOR_string___Collection___join))( variable5 /*props*/, variable12) /*Array::join*/;
-      variable13 = variable12;
-      ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable13) /*String::append*/;
-      variable14 = NEW_string___String___with_native(BOX_NativeString(". Use explicit designation."), TAG_Int(27)); /*new String*/
-      variable15 = variable14;
-      ((string___String___append_t)CALL(variable6,COLOR_abstract_collection___IndexedCollection___append))(variable6, variable15) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable6) /*TypingVisitor::error*/;
-      variable4 =  NIT_NULL /*null*/;
-      goto return_label76;
-    } else { /*if*/
-      variable6 = ((array___AbstractArray___length_t)CALL( variable5 /*props*/,COLOR_abstract_collection___Collection___length))( variable5 /*props*/) /*Array::length*/;
-      variable6 = TAG_Bool((variable6)==( TAG_Int(1)));
-      if (UNTAG_Bool(variable6)) { /*if*/
-        variable7 = ((abstract_collection___IndexedCollection___first_t)CALL( variable5 /*props*/,COLOR_abstract_collection___Collection___first))( variable5 /*props*/) /*Array::first*/;
-        variable7 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable7,COLOR_abstractmetamodel___MMLocalProperty___global))(variable7) /*MMLocalProperty::global*/;
-        variable7 = ((static_type___MMType___select_property_t)CALL( variable1 /*type_recv*/,COLOR_static_type___MMType___select_property))( variable1 /*type_recv*/, variable7) /*MMType::select_property*/;
-        variable6 = variable7;
-        variable7 = TAG_Bool(( variable6 /*p*/==NIT_NULL) || VAL_ISA( variable6 /*p*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
-        if (!UNTAG_Bool(variable7)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:803,5--25\n"); nit_exit(1);}
-        variable4 =  variable6 /*p*/ /*prop=*/;
-      }
-    }
-  }
-  variable5 = TAG_Bool(( variable4 /*prop*/ ==  NIT_NULL /*null*/) || (( variable4 /*prop*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable4 /*prop*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable4 /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable4 /*prop*/,COLOR_kernel___Object_____eqeq))( variable4 /*prop*/,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable5)) { /*if*/
-    if (UNTAG_Bool( variable2 /*is_implicit_self*/)) { /*if*/
-      variable5 = NEW_string___String___init(); /*new String*/
-      variable6 = NEW_string___String___with_native(BOX_NativeString("Error: Method or variable '"), TAG_Int(27)); /*new String*/
-      variable7 = variable6;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable7) /*String::append*/;
-      variable8 =  variable3 /*name*/;
-      variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable8) /*String::append*/;
-      variable9 = NEW_string___String___with_native(BOX_NativeString("' unknown in "), TAG_Int(13)); /*new String*/
-      variable10 = variable9;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable10) /*String::append*/;
-      variable11 =  variable1 /*type_recv*/;
-      variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable11) /*String::append*/;
-      variable12 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable13 = variable12;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable13) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable5) /*TypingVisitor::error*/;
-    } else { /*if*/
-      variable5 = NEW_string___String___init(); /*new String*/
-      variable6 = NEW_string___String___with_native(BOX_NativeString("Error: Method '"), TAG_Int(15)); /*new String*/
-      variable7 = variable6;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable7) /*String::append*/;
-      variable8 =  variable3 /*name*/;
-      variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable8) /*String::append*/;
-      variable9 = NEW_string___String___with_native(BOX_NativeString("' doesn't exists in "), TAG_Int(20)); /*new String*/
-      variable10 = variable9;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable10) /*String::append*/;
-      variable11 =  variable1 /*type_recv*/;
-      variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable11) /*String::append*/;
-      variable12 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable13 = variable12;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable13) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable5) /*TypingVisitor::error*/;
-    }
-    variable4 =  NIT_NULL /*null*/;
-    goto return_label76;
-  }
-  variable4 =  variable4 /*prop*/;
-  goto return_label76;
-  return_label76: while(false);
-  tracehead = trace.prev;
-  return variable4;
-}
-val_t typing___AAbsSendExpr___process_signature(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
-  struct trace_t trace = {NULL, "typing::AAbsSendExpr::process_signature (src/syntax//typing.nit:819,2--855:13)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-  val_t variable6;
-  val_t variable7;
-  val_t variable8;
-  val_t variable9;
-    val_t variable10;
-    val_t variable11;
-    val_t variable12;
-    val_t variable13;
-    val_t variable14;
-      val_t variable15;
-      val_t variable16;
-        val_t variable17;
-        val_t variable18;
-        val_t variable19;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 =  param2;
-  variable3 =  param3;
-  variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable1 /*prop*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable1 /*prop*/) /*MMMethod::global*/;
-  variable5 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-  ((syntax_base___MMGlobalProperty___check_visibility_t)CALL(variable4,COLOR_syntax_base___MMGlobalProperty___check_visibility))(variable4,  variable0 /*v*/,  self, variable5,  variable2 /*recv_is_self*/) /*MMGlobalProperty::check_visibility*/;
-  variable5 = ((genericity___MMLocalProperty___signature_t)CALL( variable1 /*prop*/,COLOR_static_type___MMLocalProperty___signature))( variable1 /*prop*/) /*MMMethod::signature*/;
-  variable4 = variable5;
-  variable6 = ((vararg___MMSignature___vararg_rank_t)CALL( variable4 /*psig*/,COLOR_vararg___MMSignature___vararg_rank))( variable4 /*psig*/) /*MMSignature::vararg_rank*/;
-  variable5 = variable6;
-  variable7 = ((static_type___MMSignature___arity_t)CALL( variable4 /*psig*/,COLOR_static_type___MMSignature___arity))( variable4 /*psig*/) /*MMSignature::arity*/;
-  variable6 = variable7;
-  variable7 = TAG_Int((int)0) /*decl variable raw_arity*/;
-  variable8 = TAG_Bool(( variable3 /*raw_args*/ ==  NIT_NULL /*null*/) || (( variable3 /*raw_args*/ != NIT_NULL) && UNTAG_Bool(((array___AbstractArray_____eqeq_t)CALL( variable3 /*raw_args*/,COLOR_kernel___Object_____eqeq))( variable3 /*raw_args*/,  NIT_NULL /*null*/) /*Array::==*/)));
-  if (UNTAG_Bool(variable8)) { /*if*/
-    variable7 =  TAG_Int(0) /*raw_arity=*/;
+void typing___AIssetAttrExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1005, LOCATE_typing___AIssetAttrExpr___after_typing};
+    static val_t once_value_179 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_typing___AAttrFormExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/) /*AAttrFormExpr::do_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___prop(variable[0])(variable[0]) /*AAttrFormExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label178;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAttrFormExpr___attr_type(variable[0])(variable[0]) /*AAttrFormExpr::attr_type*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_static_type___MMType___is_nullable(variable[3])(variable[3]) /*MMType::is_nullable*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_179 != NIT_NULL) variable[3] = once_value_179;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Error: isset on a nullable attribute."), TAG_Int(37)) /*new String*/;
+      once_value_179 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label178: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___AAbsAbsSendExpr___prop_signature(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1019, LOCATE_typing___AAbsAbsSendExpr___prop_signature};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AAbsAbsSendExpr____prop_signature( self) /*AAbsAbsSendExpr::_prop_signature*/;
+}
+val_t typing___AAbsAbsSendExpr___arguments(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1022, LOCATE_typing___AAbsAbsSendExpr___arguments};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___AAbsAbsSendExpr____arguments( self) /*AAbsAbsSendExpr::_arguments*/;
+}
+val_t typing___AAbsAbsSendExpr___process_signature(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
+  struct trace_t trace = {NULL, NULL, 1025, LOCATE_typing___AAbsAbsSendExpr___process_signature};
+    static val_t once_value_181 = NIT_NULL; /* Once value for string variable[10]*/
+    static val_t once_value_182 = NIT_NULL; /* Once value for string variable[10]*/
+  val_t variable[24];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Local variable */
+  variable[4] =  param3;
+  /* Register variable[5]: Method return value and escape marker */
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_vararg___MMSignature___vararg_rank( variable[2] /*psig*/)( variable[2] /*psig*/) /*MMSignature::vararg_rank*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMSignature___arity( variable[2] /*psig*/)( variable[2] /*psig*/) /*MMSignature::arity*/;
+  variable[7] = variable[8];
+  /* Register variable[8]: Local variable */
+  /*variable[8] is variable raw_arity*/
+  /* Register variable[9]: Result */
+  variable[9] = TAG_Bool(( variable[4] /*raw_args*/ ==  NIT_NULL /*null*/) || (( variable[4] /*raw_args*/ != NIT_NULL) && UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*raw_args*/)( variable[4] /*raw_args*/,  NIT_NULL /*null*/) /*AbstractArrayRead::==*/)));
+  if (UNTAG_Bool(variable[9])) { /*if*/
+    variable[8] =  TAG_Int(0) /*raw_arity=*/;
   } else { /*if*/
-    variable8 = ((array___AbstractArray___length_t)CALL( variable3 /*raw_args*/,COLOR_abstract_collection___Collection___length))( variable3 /*raw_args*/) /*Array::length*/;
-    variable7 = variable8 /*raw_arity=*/;
-  }
-  variable8 = TAG_Bool(UNTAG_Int( variable6 /*par_arity*/)>UNTAG_Int( variable7 /*raw_arity*/));
-  variable9 = variable8;
-  if (!UNTAG_Bool(variable9)) { /* or */
-    variable9 = TAG_Bool(( variable6 /*par_arity*/)!=( variable7 /*raw_arity*/));
-    variable10 = variable9;
-    if (UNTAG_Bool(variable10)) { /* and */
-      variable10 = TAG_Int(-UNTAG_Int( TAG_Int(1)));
-      variable10 = TAG_Bool(( variable5 /*par_vararg*/)==(variable10));
-    }
-    variable9 = variable10;
-  }
-  variable8 = variable9;
-  if (UNTAG_Bool(variable8)) { /*if*/
-    variable8 = NEW_string___String___init(); /*new String*/
-    variable9 = NEW_string___String___with_native(BOX_NativeString("Error: Method '"), TAG_Int(15)); /*new String*/
-    variable10 = variable9;
-    ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable10) /*String::append*/;
-    variable11 =  variable1 /*prop*/;
-    variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable11) /*String::append*/;
-    variable12 = NEW_string___String___with_native(BOX_NativeString("' arity missmatch."), TAG_Int(18)); /*new String*/
-    variable13 = variable12;
-    ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable13) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable8) /*TypingVisitor::error*/;
-    variable4 =  NIT_NULL /*null*/;
-    goto return_label77;
-  }
-  variable8 =  TAG_Int(0);
-  variable10 = NEW_array___Array___init(); /*new Array[PExpr]*/
-  variable9 = variable10;
-  variable10 = NEW_range___Range___without_last( TAG_Int(0),  variable6 /*par_arity*/); /*new Range[Int]*/
-  variable10 = ((range___Range___iterator_t)CALL(variable10,COLOR_abstract_collection___Collection___iterator))(variable10) /*Range::iterator*/;
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstract_collection___Collection___length( variable[4] /*raw_args*/)( variable[4] /*raw_args*/) /*AbstractArrayRead::length*/;
+    variable[8] = variable[9] /*raw_arity=*/;
+  }
+  /* Register variable[9]: Result */
+  variable[9] = TAG_Bool(UNTAG_Int( variable[7] /*par_arity*/)>UNTAG_Int( variable[8] /*raw_arity*/));
+  /* Ensure var variable[9]: Left 'or' operand*/
+  if (!UNTAG_Bool(variable[9])) { /* or */
+    /* Register variable[9]: Result */
+    variable[9] = TAG_Bool(( variable[7] /*par_arity*/)!=( variable[8] /*raw_arity*/));
+    /* Ensure var variable[9]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[9])) { /* and */
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Int(-UNTAG_Int( TAG_Int(1)));
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Bool(( variable[6] /*par_vararg*/)==(variable[9]));
+    }
+    /* Register variable[9]: Result */
+  }
+  /* Register variable[9]: Result */
+  if (UNTAG_Bool(variable[9])) { /*if*/
+    variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[10]: Once String constant */
+    if (once_value_181 != NIT_NULL) variable[10] = once_value_181;
+    else {
+      variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: '"), TAG_Int(8)) /*new String*/;
+      once_value_181 = variable[10];
+    }
+    /* Register variable[10]: Result */
+    /* Ensure var variable[10]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+    variable[10] =  variable[3] /*name*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[10]: Once String constant */
+    if (once_value_182 != NIT_NULL) variable[10] = once_value_182;
+    else {
+      variable[10] = NEW_String_string___String___with_native(BOX_NativeString("' arity missmatch."), TAG_Int(18)) /*new String*/;
+      once_value_182 = variable[10];
+    }
+    /* Register variable[10]: Result */
+    /* Ensure var variable[10]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+    /* Register variable[9]: Result */
+    variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[9]) /*AbsSyntaxVisitor::error*/;
+    variable[5] =  NIT_NULL /*null*/;
+    goto return_label180;
+  }
+  /* Register variable[9]: Local variable */
+  variable[9] =  TAG_Int(0);
+  /* Register variable[10]: Local variable */
+  /* Register variable[11]: Result */
+  variable[11] = NEW_Array_array___Array___init() /*new Array[PExpr]*/;
+  variable[10] = variable[11];
+  /* Register variable[11]: Result */
+  variable[11] = NEW_Range_range___Range___without_last( TAG_Int(0),  variable[7] /*par_arity*/) /*new Range[Int]*/;
+  /* Register variable[11]: For iterator */
+  variable[11] = CALL_abstract_collection___Collection___iterator(variable[11])(variable[11]) /*Range::iterator*/;
   while (true) { /*for*/
-    variable11 = ((abstract_collection___Iterator___is_ok_t)CALL(variable10,COLOR_abstract_collection___Iterator___is_ok))(variable10) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable11)) break; /*for*/
-    variable11 = ((abstract_collection___Iterator___item_t)CALL(variable10,COLOR_abstract_collection___Iterator___item))(variable10) /*Iterator::item*/;
-    variable12 = NIT_NULL /*decl variable a*/;
-    variable14 = ((static_type___MMSignature_____bra_t)CALL( variable4 /*psig*/,COLOR_static_type___MMSignature_____bra))( variable4 /*psig*/,  variable11 /*par_idx*/) /*MMSignature::[]*/;
-    variable13 = variable14;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool( variable2 /*recv_is_self*/)))) { /*if*/
-      variable14 = ((static_type___MMType___not_for_self_t)CALL( variable13 /*par_type*/,COLOR_static_type___MMType___not_for_self))( variable13 /*par_type*/) /*MMType::not_for_self*/;
-      variable13 = variable14 /*par_type=*/;
-    }
-    variable14 = TAG_Bool(( variable11 /*par_idx*/)==( variable5 /*par_vararg*/));
-    if (UNTAG_Bool(variable14)) { /*if*/
-      variable15 = NEW_array___Array___init(); /*new Array[PExpr]*/
-      variable14 = variable15;
-      variable15 = TAG_Int(UNTAG_Int( variable7 /*raw_arity*/)-UNTAG_Int( variable6 /*par_arity*/));
-      variable16 = NEW_range___Range___init( TAG_Int(0), variable15); /*new Range[Int]*/
-      variable15 = variable16;
-      variable15 = ((range___Range___iterator_t)CALL(variable15,COLOR_abstract_collection___Collection___iterator))(variable15) /*Range::iterator*/;
+    /* Register variable[12]: For 'is_ok' result */
+    variable[12] = CALL_abstract_collection___Iterator___is_ok(variable[11])(variable[11]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[12])) break; /*for*/
+    variable[12] = CALL_abstract_collection___Iterator___item(variable[11])(variable[11]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[13]: Local variable */
+    variable[13] = variable[12];
+    /* Register variable[14]: Local variable */
+    /*variable[14] is variable a*/
+    /* Register variable[15]: Local variable */
+    /* Register variable[16]: Result */
+    variable[16] = CALL_static_type___MMSignature_____bra( variable[2] /*psig*/)( variable[2] /*psig*/,  variable[13] /*par_idx*/) /*MMSignature::[]*/;
+    variable[15] = variable[16];
+    /* Register variable[16]: Result */
+    variable[16] = TAG_Bool(( variable[13] /*par_idx*/)==( variable[6] /*par_vararg*/));
+    if (UNTAG_Bool(variable[16])) { /*if*/
+      /* Register variable[16]: Local variable */
+      /* Register variable[17]: Result */
+      variable[17] = NEW_Array_array___Array___init() /*new Array[PExpr]*/;
+      variable[16] = variable[17];
+      /* Register variable[17]: Result */
+      variable[17] = TAG_Int(UNTAG_Int( variable[8] /*raw_arity*/)-UNTAG_Int( variable[7] /*par_arity*/));
+      /* Register variable[17]: Result */
+      variable[17] = NEW_Range_range___Range___init( TAG_Int(0), variable[17]) /*new Range[Int]*/;
+      /* Register variable[17]: For iterator */
+      variable[17] = CALL_abstract_collection___Collection___iterator(variable[17])(variable[17]) /*Range::iterator*/;
       while (true) { /*for*/
-        variable16 = ((abstract_collection___Iterator___is_ok_t)CALL(variable15,COLOR_abstract_collection___Iterator___is_ok))(variable15) /*Iterator::is_ok*/;
-        if (!UNTAG_Bool(variable16)) break; /*for*/
-        variable16 = ((abstract_collection___Iterator___item_t)CALL(variable15,COLOR_abstract_collection___Iterator___item))(variable15) /*Iterator::item*/;
-        variable17 =  variable8 /*arg_idx*/;
-        variable18 = TAG_Bool(UNTAG_Int( variable17 /*index*/)>=UNTAG_Int( TAG_Int(0)));
-        variable19 = variable18;
-        if (UNTAG_Bool(variable19)) { /* and */
-          variable19 = ATTR_array___AbstractArray____length( variable3 /*raw_args*/) /*Array::_length*/;
-          variable19 = TAG_Bool(UNTAG_Int( variable17 /*index*/)<UNTAG_Int(variable19));
+        /* Register variable[18]: For 'is_ok' result */
+        variable[18] = CALL_abstract_collection___Iterator___is_ok(variable[17])(variable[17]) /*Iterator::is_ok*/;
+        if (!UNTAG_Bool(variable[18])) break; /*for*/
+        variable[18] = CALL_abstract_collection___Iterator___item(variable[17])(variable[17]) /*Iterator::item*/ /* Ensure var: For item*/;
+        /* Register variable[19]: Local variable */
+        variable[19] = variable[18];
+        /* Register variable[20]: Local variable */
+        variable[20] =  variable[4] /*raw_args*/;
+        /* Register variable[21]: Local variable */
+        variable[21] =  variable[9] /*arg_idx*/;
+        /* Register variable[22]: Method return value and escape marker */
+        /* Register variable[23]: Result */
+        variable[23] = TAG_Bool(UNTAG_Int( variable[21] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+        /* Ensure var variable[23]: Left 'and' operand*/
+        if (UNTAG_Bool(variable[23])) { /* and */
+          /* Register variable[23]: Result */
+          variable[23] = ATTR_array___AbstractArrayRead____length(variable[20]) /*AbstractArrayRead::_length*/;
+          /* Register variable[23]: Result */
+          variable[23] = TAG_Bool(UNTAG_Int( variable[21] /*index*/)<UNTAG_Int(variable[23]));
+        }
+        /* Register variable[23]: Result */
+        if (!UNTAG_Bool(variable[23])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+        /* Register variable[23]: Result */
+        variable[23] = ATTR_array___Array____items(variable[20]) /*Array::_items*/;
+        /* Register variable[23]: Result */
+        variable[23] = UNBOX_NativeArray(variable[23])[UNTAG_Int( variable[21] /*index*/)];
+        variable[22] = variable[23];
+        goto return_label185;
+        return_label185: while(false);
+        /* Register variable[20]: Result */
+        variable[20] = variable[22];
+        variable[14] = variable[20] /*a=*/;
+        CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/,  variable[14] /*a*/,  variable[15] /*par_type*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+        CALL_abstract_collection___SimpleCollection___add( variable[16] /*star*/)( variable[16] /*star*/,  variable[14] /*a*/) /*AbstractArray::add*/;
+        /* Register variable[20]: Result */
+        variable[20] = TAG_Int(UNTAG_Int( variable[9] /*arg_idx*/)+UNTAG_Int( TAG_Int(1)));
+        variable[9] = variable[20] /*arg_idx=*/;
+        continue_184: while(0);
+        CALL_abstract_collection___Iterator___next(variable[17])(variable[17]) /*Iterator::next*/;
+      }
+      break_184: while(0);
+      /* Register variable[17]: Local variable */
+      /* Register variable[18]: Result */
+      variable[18] = NEW_AArrayExpr_parser_prod___AArrayExpr___init_aarrayexpr( variable[16] /*star*/) /*new AArrayExpr*/;
+      variable[17] = variable[18];
+      CALL_typing___AArrayExpr___do_typing( variable[17] /*aa*/)( variable[17] /*aa*/,  variable[1] /*v*/,  variable[15] /*par_type*/) /*AArrayExpr::do_typing*/;
+      variable[14] =  variable[17] /*aa*/ /*a=*/;
+    } else { /*if*/
+      /* Register variable[16]: Local variable */
+      variable[16] =  variable[4] /*raw_args*/;
+      /* Register variable[17]: Local variable */
+      variable[17] =  variable[9] /*arg_idx*/;
+      /* Register variable[18]: Method return value and escape marker */
+      /* Register variable[19]: Result */
+      variable[19] = TAG_Bool(UNTAG_Int( variable[17] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+      /* Ensure var variable[19]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[19])) { /* and */
+        /* Register variable[19]: Result */
+        variable[19] = ATTR_array___AbstractArrayRead____length(variable[16]) /*AbstractArrayRead::_length*/;
+        /* Register variable[19]: Result */
+        variable[19] = TAG_Bool(UNTAG_Int( variable[17] /*index*/)<UNTAG_Int(variable[19]));
+      }
+      /* Register variable[19]: Result */
+      if (!UNTAG_Bool(variable[19])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+      /* Register variable[19]: Result */
+      variable[19] = ATTR_array___Array____items(variable[16]) /*Array::_items*/;
+      /* Register variable[19]: Result */
+      variable[19] = UNBOX_NativeArray(variable[19])[UNTAG_Int( variable[17] /*index*/)];
+      variable[18] = variable[19];
+      goto return_label186;
+      return_label186: while(false);
+      /* Register variable[16]: Result */
+      variable[16] = variable[18];
+      variable[14] = variable[16] /*a=*/;
+      CALL_syntax_base___AbsSyntaxVisitor___check_conform_expr( variable[1] /*v*/)( variable[1] /*v*/,  variable[14] /*a*/,  variable[15] /*par_type*/) /*AbsSyntaxVisitor::check_conform_expr*/;
+      /* Register variable[16]: Result */
+      variable[16] = TAG_Int(UNTAG_Int( variable[9] /*arg_idx*/)+UNTAG_Int( TAG_Int(1)));
+      variable[9] = variable[16] /*arg_idx=*/;
+    }
+    CALL_abstract_collection___SimpleCollection___add( variable[10] /*args*/)( variable[10] /*args*/,  variable[14] /*a*/) /*AbstractArray::add*/;
+    continue_183: while(0);
+    CALL_abstract_collection___Iterator___next(variable[11])(variable[11]) /*Iterator::next*/;
+  }
+  break_183: while(0);
+  variable[5] =  variable[10] /*args*/;
+  goto return_label180;
+  return_label180: while(false);
+  tracehead = trace.prev;
+  return variable[5];
+}
+val_t typing___AAbsAbsSendExpr___process_closures(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
+  struct trace_t trace = {NULL, NULL, 1062, LOCATE_typing___AAbsAbsSendExpr___process_closures};
+      static val_t once_value_189 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_190 = NIT_NULL; /* Once value for string variable[10]*/
+        static val_t once_value_191 = NIT_NULL; /* Once value for string variable[10]*/
+        static val_t once_value_192 = NIT_NULL; /* Once value for string variable[10]*/
+        static val_t once_value_193 = NIT_NULL; /* Once value for string variable[10]*/
+        static val_t once_value_194 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_198 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_199 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_200 = NIT_NULL; /* Once value for string variable[10]*/
+  val_t variable[19];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Local variable */
+  variable[4] =  param3;
+  /* Register variable[5]: Method return value and escape marker */
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_static_type___MMSignature___return_type( variable[2] /*psig*/)( variable[2] /*psig*/) /*MMSignature::return_type*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Local variable */
+  /* Register variable[8]: Result */
+  variable[8] = CALL_static_type___MMSignature___closures( variable[2] /*psig*/)( variable[2] /*psig*/) /*MMSignature::closures*/;
+  variable[7] = variable[8];
+  /* Register variable[8]: Local variable */
+  variable[8] =  TAG_Int(0);
+  /* Register variable[9]: For iterator */
+  variable[9] = CALL_abstract_collection___Collection___iterator( variable[7] /*cs*/)( variable[7] /*cs*/) /*AbstractArrayRead::iterator*/;
+  while (true) { /*for*/
+    /* Register variable[10]: For 'is_ok' result */
+    variable[10] = CALL_abstract_collection___Iterator___is_ok(variable[9])(variable[9]) /*ArrayIterator::is_ok*/;
+    if (!UNTAG_Bool(variable[10])) break; /*for*/
+    variable[10] = CALL_abstract_collection___Iterator___item(variable[9])(variable[9]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[11]: Local variable */
+    variable[11] = variable[10];
+    /* Register variable[12]: Result */
+    variable[12] = CALL_static_type___MMClosure___is_optional( variable[11] /*c*/)( variable[11] /*c*/) /*MMClosure::is_optional*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[12])))) { /*if*/
+      variable[8] = TAG_Int(UNTAG_Int(variable[8])+UNTAG_Int( TAG_Int(1))) /*min_arity*/;
+    }
+    continue_188: while(0);
+    CALL_abstract_collection___Iterator___next(variable[9])(variable[9]) /*ArrayIterator::next*/;
+  }
+  break_188: while(0);
+  /* Register variable[9]: Result */
+  variable[9] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*cd*/ ==  NIT_NULL /*null*/) || (( variable[4] /*cd*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*cd*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*cd*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*cd*/)( variable[4] /*cd*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[9])) { /*if*/
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstract_collection___Collection___length( variable[7] /*cs*/)( variable[7] /*cs*/) /*AbstractArrayRead::length*/;
+    /* Register variable[9]: Result */
+    variable[9] = TAG_Bool((variable[9])==( TAG_Int(0)));
+    if (UNTAG_Bool(variable[9])) { /*if*/
+      variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_189 != NIT_NULL) variable[10] = once_value_189;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+        once_value_189 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      variable[10] =  variable[3] /*name*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_190 != NIT_NULL) variable[10] = once_value_190;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" does not require blocks."), TAG_Int(25)) /*new String*/;
+        once_value_190 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[9]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstract_collection___Collection___length( variable[4] /*cd*/)( variable[4] /*cd*/) /*AbstractArrayRead::length*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_abstract_collection___Collection___length( variable[7] /*cs*/)( variable[7] /*cs*/) /*AbstractArrayRead::length*/;
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Bool(UNTAG_Int(variable[9])>UNTAG_Int(variable[10]));
+      /* Ensure var variable[9]: Left 'or' operand*/
+      if (!UNTAG_Bool(variable[9])) { /* or */
+        /* Register variable[9]: Result */
+        variable[9] = CALL_abstract_collection___Collection___length( variable[4] /*cd*/)( variable[4] /*cd*/) /*AbstractArrayRead::length*/;
+        /* Register variable[9]: Result */
+        variable[9] = TAG_Bool(UNTAG_Int(variable[9])<UNTAG_Int( variable[8] /*min_arity*/));
+      }
+      /* Register variable[9]: Result */
+      if (UNTAG_Bool(variable[9])) { /*if*/
+        variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(7)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_191 != NIT_NULL) variable[10] = once_value_191;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+          once_value_191 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        variable[10] =  variable[3] /*name*/ /* Ensure var: super-string element*/;
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_192 != NIT_NULL) variable[10] = once_value_192;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" requires "), TAG_Int(10)) /*new String*/;
+          once_value_192 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        /* Register variable[10]: Result */
+        variable[10] = CALL_abstract_collection___Collection___length( variable[7] /*cs*/)( variable[7] /*cs*/) /*AbstractArrayRead::length*/;
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_193 != NIT_NULL) variable[10] = once_value_193;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" blocks, "), TAG_Int(9)) /*new String*/;
+          once_value_193 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        /* Register variable[10]: Result */
+        variable[10] = CALL_abstract_collection___Collection___length( variable[4] /*cd*/)( variable[4] /*cd*/) /*AbstractArrayRead::length*/;
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[10]: Once String constant */
+        if (once_value_194 != NIT_NULL) variable[10] = once_value_194;
+        else {
+          variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" found."), TAG_Int(7)) /*new String*/;
+          once_value_194 = variable[10];
+        }
+        /* Register variable[10]: Result */
+        /* Ensure var variable[10]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+        /* Register variable[9]: Result */
+        variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[9]) /*AbsSyntaxVisitor::error*/;
+      } else { /*if*/
+        /* Register variable[9]: Local variable */
+        variable[9] =  NIT_NULL /*null*/;
+        /* Register variable[10]: Result */
+        variable[10] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[6] /*t*/ ==  NIT_NULL /*null*/) || (( variable[6] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[6] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[6] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[6] /*t*/)( variable[6] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+        if (UNTAG_Bool(variable[10])) { /*if*/
+          /* Register variable[10]: Result */
+          variable[10] = NEW_Array_array___Array___init() /*new Array[ABreakExpr]*/;
+          variable[9] = variable[10] /*break_list=*/;
+        }
+        /* Register variable[10]: Result */
+        variable[10] = CALL_abstract_collection___Collection___length( variable[4] /*cd*/)( variable[4] /*cd*/) /*AbstractArrayRead::length*/;
+        /* Register variable[10]: Result */
+        variable[10] = NEW_Range_range___Range___without_last( TAG_Int(0), variable[10]) /*new Range[Int]*/;
+        /* Register variable[10]: For iterator */
+        variable[10] = CALL_abstract_collection___Collection___iterator(variable[10])(variable[10]) /*Range::iterator*/;
+        while (true) { /*for*/
+          /* Register variable[11]: For 'is_ok' result */
+          variable[11] = CALL_abstract_collection___Iterator___is_ok(variable[10])(variable[10]) /*Iterator::is_ok*/;
+          if (!UNTAG_Bool(variable[11])) break; /*for*/
+          variable[11] = CALL_abstract_collection___Iterator___item(variable[10])(variable[10]) /*Iterator::item*/ /* Ensure var: For item*/;
+          /* Register variable[12]: Local variable */
+          variable[12] = variable[11];
+          /* Register variable[13]: Local variable */
+          /* Register variable[14]: Local variable */
+          variable[14] =  variable[7] /*cs*/;
+          /* Register variable[15]: Local variable */
+          variable[15] =  variable[12] /*i*/;
+          /* Register variable[16]: Method return value and escape marker */
+          /* Register variable[17]: Result */
+          variable[17] = TAG_Bool(UNTAG_Int( variable[15] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+          /* Ensure var variable[17]: Left 'and' operand*/
+          if (UNTAG_Bool(variable[17])) { /* and */
+            /* Register variable[17]: Result */
+            variable[17] = ATTR_array___AbstractArrayRead____length(variable[14]) /*AbstractArrayRead::_length*/;
+            /* Register variable[17]: Result */
+            variable[17] = TAG_Bool(UNTAG_Int( variable[15] /*index*/)<UNTAG_Int(variable[17]));
+          }
+          /* Register variable[17]: Result */
+          if (!UNTAG_Bool(variable[17])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+          /* Register variable[17]: Result */
+          variable[17] = ATTR_array___Array____items(variable[14]) /*Array::_items*/;
+          /* Register variable[17]: Result */
+          variable[17] = UNBOX_NativeArray(variable[17])[UNTAG_Int( variable[15] /*index*/)];
+          variable[16] = variable[17];
+          goto return_label196;
+          return_label196: while(false);
+          /* Register variable[14]: Result */
+          variable[14] = variable[16];
+          variable[13] = variable[14];
+          /* Register variable[14]: Local variable */
+          /* Register variable[15]: Local variable */
+          variable[15] =  variable[4] /*cd*/;
+          /* Register variable[16]: Local variable */
+          variable[16] =  variable[12] /*i*/;
+          /* Register variable[17]: Method return value and escape marker */
+          /* Register variable[18]: Result */
+          variable[18] = TAG_Bool(UNTAG_Int( variable[16] /*index*/)>=UNTAG_Int( TAG_Int(0)));
+          /* Ensure var variable[18]: Left 'and' operand*/
+          if (UNTAG_Bool(variable[18])) { /* and */
+            /* Register variable[18]: Result */
+            variable[18] = ATTR_array___AbstractArrayRead____length(variable[15]) /*AbstractArrayRead::_length*/;
+            /* Register variable[18]: Result */
+            variable[18] = TAG_Bool(UNTAG_Int( variable[16] /*index*/)<UNTAG_Int(variable[18]));
+          }
+          /* Register variable[18]: Result */
+          if (!UNTAG_Bool(variable[18])) { fprintf(stderr, "Assert%s failed", " 'index' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_array___Array_____bra, LOCATE_typing, 234); nit_exit(1);}
+          /* Register variable[18]: Result */
+          variable[18] = ATTR_array___Array____items(variable[15]) /*Array::_items*/;
+          /* Register variable[18]: Result */
+          variable[18] = UNBOX_NativeArray(variable[18])[UNTAG_Int( variable[16] /*index*/)];
+          variable[17] = variable[18];
+          goto return_label197;
+          return_label197: while(false);
+          /* Register variable[15]: Result */
+          variable[15] = variable[17];
+          variable[14] = variable[15];
+          /* Register variable[15]: Local variable */
+          /* Register variable[16]: Result */
+          variable[16] = NEW_EscapableClosure_escape___EscapableClosure___init( variable[14] /*cdi*/,  variable[13] /*csi*/,  variable[9] /*break_list*/) /*new EscapableClosure*/;
+          variable[15] = variable[16];
+          /* Register variable[16]: Result */
+          variable[16] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+          CALL_escape___EscapableContext___push(variable[16])(variable[16],  variable[15] /*esc*/) /*EscapableContext::push*/;
+          CALL_typing___PClosureDef___accept_typing2( variable[14] /*cdi*/)( variable[14] /*cdi*/,  variable[1] /*v*/,  variable[15] /*esc*/) /*PClosureDef::accept_typing2*/;
+          /* Register variable[16]: Result */
+          variable[16] = CALL_typing___TypingVisitor___escapable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::escapable_ctx*/;
+          CALL_escape___EscapableContext___pop(variable[16])(variable[16]) /*EscapableContext::pop*/;
+          continue_195: while(0);
+          CALL_abstract_collection___Iterator___next(variable[10])(variable[10]) /*Iterator::next*/;
+        }
+        break_195: while(0);
+        /* Register variable[10]: Result */
+        variable[10] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[9] /*break_list*/ ==  NIT_NULL /*null*/) || (( variable[9] /*break_list*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[9] /*break_list*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[9] /*break_list*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[9] /*break_list*/)( variable[9] /*break_list*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+        if (UNTAG_Bool(variable[10])) { /*if*/
+          /* Register variable[10]: Result */
+          variable[10] = CALL_syntax_base___AbsSyntaxVisitor___check_conform_multiexpr( variable[1] /*v*/)( variable[1] /*v*/,  variable[6] /*t*/,  variable[9] /*break_list*/) /*AbsSyntaxVisitor::check_conform_multiexpr*/;
+          variable[6] = variable[10] /*t=*/;
         }
-        variable18 = variable19;
-        if (!UNTAG_Bool(variable18)) { fprintf(stderr, "Assert 'index'  failed: bin/../lib/standard//array.nit:229,3--46\n"); nit_exit(1);}
-        variable18 = ATTR_array___Array____items( variable3 /*raw_args*/) /*Array::_items*/;
-        variable18 = UNBOX_NativeArray(variable18)[UNTAG_Int( variable17 /*index*/)];
-        goto return_label80;
-        return_label80: while(false);
-        variable17 = variable18;
-        variable12 = variable17 /*a=*/;
-        variable17 = ((typing___PExpr___stype_t)CALL( variable12 /*a*/,COLOR_syntax_base___PExpr___stype))( variable12 /*a*/) /*PExpr::stype*/;
-        ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable17,  variable13 /*par_type*/) /*TypingVisitor::check_conform*/;
-        ((array___AbstractArray___add_t)CALL( variable14 /*star*/,COLOR_abstract_collection___SimpleCollection___add))( variable14 /*star*/,  variable12 /*a*/) /*Array::add*/;
-        variable17 = TAG_Int(UNTAG_Int( variable8 /*arg_idx*/)+UNTAG_Int( TAG_Int(1)));
-        variable8 = variable17 /*arg_idx=*/;
-        continue_79: while(0);
-        ((abstract_collection___Iterator___next_t)CALL(variable15,COLOR_abstract_collection___Iterator___next))(variable15) /*Iterator::next*/;
-      }
-      break_79: while(0);
-      variable16 = NEW_parser_prod___AArrayExpr___init_aarrayexpr( variable14 /*star*/); /*new AArrayExpr*/
-      variable15 = variable16;
-      variable16 = ((syntax_base___AbsSyntaxVisitor___type_array_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_array))( variable0 /*v*/,  variable13 /*par_type*/) /*TypingVisitor::type_array*/;
-      ((typing___AArrayExpr___stype__eq_t)CALL( variable15 /*aa*/,COLOR_typing___AArrayExpr___stype__eq))( variable15 /*aa*/, variable16) /*AArrayExpr::stype=*/;
-      variable12 =  variable15 /*aa*/ /*a=*/;
+      }
+    }
+  } else { /*if*/
+    /* Register variable[9]: Result */
+    variable[9] = TAG_Bool(( variable[8] /*min_arity*/)!=( TAG_Int(0)));
+    if (UNTAG_Bool(variable[9])) { /*if*/
+      variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_198 != NIT_NULL) variable[10] = once_value_198;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+        once_value_198 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      variable[10] =  variable[3] /*name*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_199 != NIT_NULL) variable[10] = once_value_199;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" requires "), TAG_Int(10)) /*new String*/;
+        once_value_199 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[10]: Result */
+      variable[10] = CALL_abstract_collection___Collection___length( variable[7] /*cs*/)( variable[7] /*cs*/) /*AbstractArrayRead::length*/;
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_200 != NIT_NULL) variable[10] = once_value_200;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString(" blocks."), TAG_Int(8)) /*new String*/;
+        once_value_200 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[9]) /*AbsSyntaxVisitor::error*/;
+    }
+  }
+  variable[5] =  variable[6] /*t*/;
+  goto return_label187;
+  return_label187: while(false);
+  tracehead = trace.prev;
+  return variable[5];
+}
+void typing___AAbsSendExpr___do_typing(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3, val_t  param4, val_t  param5, val_t  param6) {
+  struct trace_t trace = {NULL, NULL, 1105, LOCATE_typing___AAbsSendExpr___do_typing};
+  val_t variable[14];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Local variable */
+  variable[4] =  param3;
+  /* Register variable[5]: Local variable */
+  variable[5] =  param4;
+  /* Register variable[6]: Local variable */
+  variable[6] =  param5;
+  /* Register variable[7]: Local variable */
+  variable[7] =  param6;
+  /* Register variable[8]: Method return value and escape marker */
+  /* Register variable[9]: Local variable */
+  /* Register variable[10]: Result */
+  variable[10] = CALL_typing___AAbsSendExpr___get_property(variable[0])(variable[0],  variable[1] /*v*/,  variable[2] /*type_recv*/,  variable[3] /*is_implicit_self*/,  variable[5] /*name*/) /*AAbsSendExpr::get_property*/;
+  variable[9] = variable[10];
+  /* Register variable[10]: Result */
+  variable[10] = TAG_Bool(( variable[9] /*prop*/ ==  NIT_NULL /*null*/) || (( variable[9] /*prop*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[9] /*prop*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[9] /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[9] /*prop*/)( variable[9] /*prop*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[10])) { /*if*/
+    goto return_label201;
+  }
+  /* Register variable[10]: Local variable */
+  /* Register variable[11]: Result */
+  variable[11] = CALL_typing___AAbsSendExpr___get_signature(variable[0])(variable[0],  variable[1] /*v*/,  variable[2] /*type_recv*/,  variable[9] /*prop*/,  variable[4] /*recv_is_self*/) /*AAbsSendExpr::get_signature*/;
+  variable[10] = variable[11];
+  /* Register variable[11]: Result */
+  variable[11] = TAG_Bool(( variable[10] /*sig*/ ==  NIT_NULL /*null*/) || (( variable[10] /*sig*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[10] /*sig*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[10] /*sig*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[10] /*sig*/)( variable[10] /*sig*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[11])) { /*if*/
+    goto return_label201;
+  }
+  /* Register variable[11]: Local variable */
+  /* Register variable[12]: Result */
+  variable[12] = CALL_abstractmetamodel___MMLocalProperty___name( variable[9] /*prop*/)( variable[9] /*prop*/) /*MMLocalProperty::name*/;
+  /* Register variable[12]: Result */
+  variable[12] = CALL_typing___AAbsAbsSendExpr___process_signature(variable[0])(variable[0],  variable[1] /*v*/,  variable[10] /*sig*/, variable[12],  variable[6] /*raw_args*/) /*AAbsAbsSendExpr::process_signature*/;
+  variable[11] = variable[12];
+  /* Register variable[12]: Result */
+  variable[12] = TAG_Bool(( variable[11] /*args*/ ==  NIT_NULL /*null*/) || (( variable[11] /*args*/ != NIT_NULL) && UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[11] /*args*/)( variable[11] /*args*/,  NIT_NULL /*null*/) /*AbstractArrayRead::==*/)));
+  if (UNTAG_Bool(variable[12])) { /*if*/
+    goto return_label201;
+  }
+  /* Register variable[12]: Local variable */
+  /* Register variable[13]: Result */
+  variable[13] = CALL_abstractmetamodel___MMLocalProperty___name( variable[9] /*prop*/)( variable[9] /*prop*/) /*MMLocalProperty::name*/;
+  /* Register variable[13]: Result */
+  variable[13] = CALL_typing___AAbsAbsSendExpr___process_closures(variable[0])(variable[0],  variable[1] /*v*/,  variable[10] /*sig*/, variable[13],  variable[7] /*closure_defs*/) /*AAbsAbsSendExpr::process_closures*/;
+  variable[12] = variable[13];
+  /* Register variable[13]: Result */
+  variable[13] = TAG_Bool(( variable[12] /*rtype*/ ==  NIT_NULL /*null*/) || (( variable[12] /*rtype*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[12] /*rtype*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[12] /*rtype*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[12] /*rtype*/)( variable[12] /*rtype*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[13]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[13])) { /* and */
+    /* Register variable[13]: Result */
+    variable[13] = CALL_static_type___MMSignature___return_type( variable[10] /*sig*/)( variable[10] /*sig*/) /*MMSignature::return_type*/;
+    /* Register variable[13]: Result */
+    variable[13] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[13] ==  NIT_NULL /*null*/) || ((variable[13] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[13])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[13], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[13])(variable[13],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  }
+  /* Register variable[13]: Result */
+  if (UNTAG_Bool(variable[13])) { /*if*/
+    goto return_label201;
+  }
+  ATTR_typing___AAbsSendExpr____prop(variable[0]) /*AAbsSendExpr::_prop*/ =  variable[9] /*prop*/;
+  ATTR_typing___AAbsAbsSendExpr____prop_signature(variable[0]) /*AAbsAbsSendExpr::_prop_signature*/ =  variable[10] /*sig*/;
+  ATTR_typing___AAbsAbsSendExpr____arguments(variable[0]) /*AAbsAbsSendExpr::_arguments*/ =  variable[11] /*args*/;
+  ATTR_typing___AAbsSendExpr____return_type(variable[0]) /*AAbsSendExpr::_return_type*/ =  variable[12] /*rtype*/;
+  return_label201: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___AAbsSendExpr___get_property(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
+  struct trace_t trace = {NULL, NULL, 1122, LOCATE_typing___AAbsSendExpr___get_property};
+      static val_t once_value_203 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_204 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_205 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_206 = NIT_NULL; /* Once value for string variable[10]*/
+      static val_t once_value_207 = NIT_NULL; /* Once value for string variable[9]*/
+      static val_t once_value_208 = NIT_NULL; /* Once value for string variable[9]*/
+      static val_t once_value_209 = NIT_NULL; /* Once value for string variable[9]*/
+      static val_t once_value_210 = NIT_NULL; /* Once value for string variable[9]*/
+      static val_t once_value_211 = NIT_NULL; /* Once value for string variable[9]*/
+      static val_t once_value_212 = NIT_NULL; /* Once value for string variable[9]*/
+  val_t variable[12];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Local variable */
+  variable[4] =  param3;
+  /* Register variable[5]: Method return value and escape marker */
+  /* Register variable[6]: Result */
+  variable[6] = TAG_Bool(( variable[2] /*type_recv*/ ==  NIT_NULL /*null*/) || (( variable[2] /*type_recv*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[2] /*type_recv*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[2] /*type_recv*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[2] /*type_recv*/)( variable[2] /*type_recv*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[6])) { /*if*/
+    variable[5] =  NIT_NULL /*null*/;
+    goto return_label202;
+  }
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_static_type___MMType___local_class( variable[2] /*type_recv*/)( variable[2] /*type_recv*/) /*MMType::local_class*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Local variable */
+  variable[7] =  NIT_NULL /*null*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_abstractmetamodel___MMLocalClass___has_global_property_by_name( variable[6] /*lc*/)( variable[6] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::has_global_property_by_name*/;
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMLocalClass___select_method( variable[6] /*lc*/)( variable[6] /*lc*/,  variable[4] /*name*/) /*MMLocalClass::select_method*/;
+    variable[7] = variable[8] /*prop=*/;
+  }
+  /* Register variable[8]: Result */
+  variable[8] = TAG_Bool(( variable[7] /*prop*/ ==  NIT_NULL /*null*/) || (( variable[7] /*prop*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[7] /*prop*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[7] /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[7] /*prop*/)( variable[7] /*prop*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[8]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[8])) { /* and */
+    /* Register variable[8]: Result */
+    variable[8] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMLocalProperty___global(variable[8])(variable[8]) /*MMLocalProperty::global*/;
+    /* Register variable[8]: Result */
+    variable[8] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[8])(variable[8]) /*MMGlobalProperty::is_init*/;
+  }
+  /* Register variable[8]: Result */
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    /* Register variable[8]: Local variable */
+    /* Register variable[9]: Result */
+    variable[9] = CALL_static_type___MMType___local_class( variable[2] /*type_recv*/)( variable[2] /*type_recv*/) /*MMType::local_class*/;
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstractmetamodel___MMLocalClass___super_methods_named(variable[9])(variable[9],  variable[4] /*name*/) /*MMLocalClass::super_methods_named*/;
+    variable[8] = variable[9];
+    /* Register variable[9]: Result */
+    variable[9] = CALL_abstract_collection___Collection___length( variable[8] /*props*/)( variable[8] /*props*/) /*AbstractArrayRead::length*/;
+    /* Register variable[9]: Result */
+    variable[9] = TAG_Bool(UNTAG_Int(variable[9])>UNTAG_Int( TAG_Int(1)));
+    if (UNTAG_Bool(variable[9])) { /*if*/
+      variable[9] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_203 != NIT_NULL) variable[10] = once_value_203;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString("Error: Ambigous method name '"), TAG_Int(29)) /*new String*/;
+        once_value_203 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      variable[10] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_204 != NIT_NULL) variable[10] = once_value_204;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString("' for "), TAG_Int(6)) /*new String*/;
+        once_value_204 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_205 != NIT_NULL) variable[10] = once_value_205;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)) /*new String*/;
+        once_value_205 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Register variable[10]: Result */
+      variable[10] = CALL_string___Collection___join( variable[8] /*props*/)( variable[8] /*props*/, variable[10]) /*Collection::join*/;
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[10]: Once String constant */
+      if (once_value_206 != NIT_NULL) variable[10] = once_value_206;
+      else {
+        variable[10] = NEW_String_string___String___with_native(BOX_NativeString(". Use explicit designation."), TAG_Int(27)) /*new String*/;
+        once_value_206 = variable[10];
+      }
+      /* Register variable[10]: Result */
+      /* Ensure var variable[10]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[9])(variable[9], variable[10]) /*AbstractArray::add*/;
+      /* Register variable[9]: Result */
+      variable[9] = CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[9]) /*AbsSyntaxVisitor::error*/;
+      variable[5] =  NIT_NULL /*null*/;
+      goto return_label202;
+    } else { /*if*/
+      /* Register variable[9]: Result */
+      variable[9] = CALL_abstract_collection___Collection___length( variable[8] /*props*/)( variable[8] /*props*/) /*AbstractArrayRead::length*/;
+      /* Register variable[9]: Result */
+      variable[9] = TAG_Bool((variable[9])==( TAG_Int(1)));
+      if (UNTAG_Bool(variable[9])) { /*if*/
+        /* Register variable[9]: Local variable */
+        /* Register variable[10]: Result */
+        variable[10] = CALL_static_type___MMType___local_class( variable[2] /*type_recv*/)( variable[2] /*type_recv*/) /*MMType::local_class*/;
+        /* Register variable[11]: Result */
+        variable[11] = CALL_abstract_collection___Collection___first( variable[8] /*props*/)( variable[8] /*props*/) /*IndexedCollectionRead::first*/;
+        /* Register variable[11]: Result */
+        variable[11] = CALL_abstractmetamodel___MMLocalProperty___global(variable[11])(variable[11]) /*MMLocalProperty::global*/;
+        /* Register variable[10]: Result */
+        variable[10] = CALL_abstractmetamodel___MMLocalClass_____bra(variable[10])(variable[10], variable[11]) /*MMLocalClass::[]*/;
+        variable[9] = variable[10];
+        /* Register variable[10]: Result */
+        variable[10] = TAG_Bool(( variable[9] /*p*/==NIT_NULL) || VAL_ISA( variable[9] /*p*/, COLOR_MMMethod, ID_MMMethod)) /*cast MMMethod*/;
+        if (!UNTAG_Bool(variable[10])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_typing___AAbsSendExpr___get_property, LOCATE_typing, 1135); nit_exit(1);}
+        variable[7] =  variable[9] /*p*/ /*prop=*/;
+      }
+    }
+  }
+  /* Register variable[8]: Result */
+  variable[8] = TAG_Bool(( variable[7] /*prop*/ ==  NIT_NULL /*null*/) || (( variable[7] /*prop*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[7] /*prop*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[7] /*prop*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[7] /*prop*/)( variable[7] /*prop*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[8])) { /*if*/
+    if (UNTAG_Bool( variable[3] /*is_implicit_self*/)) { /*if*/
+      variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_207 != NIT_NULL) variable[9] = once_value_207;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: Method or variable '"), TAG_Int(27)) /*new String*/;
+        once_value_207 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      variable[9] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_208 != NIT_NULL) variable[9] = once_value_208;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("' unknown in "), TAG_Int(13)) /*new String*/;
+        once_value_208 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      variable[9] =  variable[2] /*type_recv*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_209 != NIT_NULL) variable[9] = once_value_209;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_209 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
     } else { /*if*/
-      variable14 =  variable8 /*arg_idx*/;
-      variable15 = TAG_Bool(UNTAG_Int( variable14 /*index*/)>=UNTAG_Int( TAG_Int(0)));
-      variable16 = variable15;
-      if (UNTAG_Bool(variable16)) { /* and */
-        variable16 = ATTR_array___AbstractArray____length( variable3 /*raw_args*/) /*Array::_length*/;
-        variable16 = TAG_Bool(UNTAG_Int( variable14 /*index*/)<UNTAG_Int(variable16));
-      }
-      variable15 = variable16;
-      if (!UNTAG_Bool(variable15)) { fprintf(stderr, "Assert 'index'  failed: bin/../lib/standard//array.nit:229,3--46\n"); nit_exit(1);}
-      variable15 = ATTR_array___Array____items( variable3 /*raw_args*/) /*Array::_items*/;
-      variable15 = UNBOX_NativeArray(variable15)[UNTAG_Int( variable14 /*index*/)];
-      goto return_label81;
-      return_label81: while(false);
-      variable14 = variable15;
-      variable12 = variable14 /*a=*/;
-      variable14 = ((typing___PExpr___stype_t)CALL( variable12 /*a*/,COLOR_syntax_base___PExpr___stype))( variable12 /*a*/) /*PExpr::stype*/;
-      ((syntax_base___AbsSyntaxVisitor___check_conform_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___check_conform))( variable0 /*v*/,  self, variable14,  variable13 /*par_type*/) /*TypingVisitor::check_conform*/;
-      variable14 = TAG_Int(UNTAG_Int( variable8 /*arg_idx*/)+UNTAG_Int( TAG_Int(1)));
-      variable8 = variable14 /*arg_idx=*/;
-    }
-    ((array___AbstractArray___add_t)CALL( variable9 /*args*/,COLOR_abstract_collection___SimpleCollection___add))( variable9 /*args*/,  variable12 /*a*/) /*Array::add*/;
-    continue_78: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable10,COLOR_abstract_collection___Iterator___next))(variable10) /*Iterator::next*/;
-  }
-  break_78: while(0);
-  variable4 =  variable9 /*args*/;
-  goto return_label77;
-  return_label77: while(false);
-  tracehead = trace.prev;
-  return variable4;
+      variable[8] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_210 != NIT_NULL) variable[9] = once_value_210;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("Error: Method '"), TAG_Int(15)) /*new String*/;
+        once_value_210 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      variable[9] =  variable[4] /*name*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_211 != NIT_NULL) variable[9] = once_value_211;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("' doesn't exists in "), TAG_Int(20)) /*new String*/;
+        once_value_211 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      variable[9] =  variable[2] /*type_recv*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], CALL_string___Object___to_s(variable[9])(variable[9]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[9]: Once String constant */
+      if (once_value_212 != NIT_NULL) variable[9] = once_value_212;
+      else {
+        variable[9] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_212 = variable[9];
+      }
+      /* Register variable[9]: Result */
+      /* Ensure var variable[9]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[8])(variable[8], variable[9]) /*AbstractArray::add*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[8]) /*AbsSyntaxVisitor::error*/;
+    }
+    variable[5] =  NIT_NULL /*null*/;
+    goto return_label202;
+  }
+  variable[5] =  variable[7] /*prop*/;
+  goto return_label202;
+  return_label202: while(false);
+  tracehead = trace.prev;
+  return variable[5];
+}
+val_t typing___AAbsSendExpr___get_signature(val_t  self, val_t  param0, val_t  param1, val_t  param2, val_t  param3) {
+  struct trace_t trace = {NULL, NULL, 1151, LOCATE_typing___AAbsSendExpr___get_signature};
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Local variable */
+  variable[4] =  param3;
+  /* Register variable[5]: Method return value and escape marker */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalProperty___global( variable[3] /*prop*/)( variable[3] /*prop*/) /*MMLocalProperty::global*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+  CALL_syntax_base___MMGlobalProperty___check_visibility(variable[6])(variable[6],  variable[1] /*v*/, variable[0], variable[7],  variable[4] /*recv_is_self*/) /*MMGlobalProperty::check_visibility*/;
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_static_type___MMLocalProperty___signature_for( variable[3] /*prop*/)( variable[3] /*prop*/,  variable[2] /*type_recv*/) /*MMLocalProperty::signature_for*/;
+  variable[6] = variable[7];
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool( variable[4] /*recv_is_self*/)))) { /*if*/
+    /* Register variable[7]: Result */
+    variable[7] = CALL_static_type___MMSignature___not_for_self( variable[6] /*psig*/)( variable[6] /*psig*/) /*MMSignature::not_for_self*/;
+    variable[6] = variable[7] /*psig=*/;
+  }
+  variable[5] =  variable[6] /*psig*/;
+  goto return_label213;
+  return_label213: while(false);
+  tracehead = trace.prev;
+  return variable[5];
 }
 val_t typing___AAbsSendExpr___prop(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AAbsSendExpr::prop (src/syntax//typing.nit:858,2--859:30)"};
+  struct trace_t trace = {NULL, NULL, 1160, LOCATE_typing___AAbsSendExpr___prop};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___AAbsSendExpr____prop( self) /*AAbsSendExpr::_prop*/;
 }
-val_t typing___AAbsSendExpr___arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AAbsSendExpr::arguments (src/syntax//typing.nit:861,2--862:38)"};
+val_t typing___AAbsSendExpr___return_type(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1163, LOCATE_typing___AAbsSendExpr___return_type};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
-  return ATTR_typing___AAbsSendExpr____arguments( self) /*AAbsSendExpr::_arguments*/;
+  return ATTR_typing___AAbsSendExpr____return_type( self) /*AAbsSendExpr::_return_type*/;
 }
 void typing___ASuperInitCall___register_super_init_call(val_t  self, val_t  param0, val_t  param1) {
-  struct trace_t trace = {NULL, "typing::ASuperInitCall::register_super_init_call (src/syntax//typing.nit:869,2--896:10)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-    val_t variable4;
-    val_t variable5;
-    val_t variable6;
-    val_t variable7;
-      val_t variable8;
-      val_t variable9;
-      val_t variable10;
-      val_t variable11;
-      val_t variable12;
-      val_t variable13;
-      val_t variable14;
-               val_t variable15;
-               val_t variable16;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  variable2 = ((parser_prod___PNode___parent_t)CALL( self,COLOR_parser_prod___PNode___parent))( self) /*ASuperInitCall::parent*/;
-  variable3 = ((typing___TypingVisitor___top_block_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___top_block))( variable0 /*v*/) /*TypingVisitor::top_block*/;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable2 == variable3) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2,variable3)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2, variable3) /*PNode::==*/)))))));
-  variable3 = variable2;
-  if (UNTAG_Bool(variable3)) { /* and */
-    variable3 = ((typing___TypingVisitor___top_block_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___top_block))( variable0 /*v*/) /*TypingVisitor::top_block*/;
-    variable3 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( self == variable3) || (( self != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( self,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( self,variable3)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( self,COLOR_kernel___Object_____eqeq))( self, variable3) /*ASuperInitCall::==*/)))))));
-  }
-  variable2 = variable3;
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = NEW_string___String___init(); /*new String*/
-    variable3 = NEW_string___String___with_native(BOX_NativeString("Error: Constructor invocation "), TAG_Int(30)); /*new String*/
-    variable4 = variable3;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable4) /*String::append*/;
-    variable5 =  variable1 /*property*/;
-    variable5 = ((string___String___to_s_t)CALL(variable5,COLOR_string___Object___to_s))(variable5) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable5) /*String::append*/;
-    variable6 = NEW_string___String___with_native(BOX_NativeString(" must not be in nested block."), TAG_Int(29)); /*new String*/
-    variable7 = variable6;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable7) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
-  }
-  variable3 = ((syntax_base___AbsSyntaxVisitor___module_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___module))( variable0 /*v*/) /*TypingVisitor::module*/;
-  variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL( variable1 /*property*/,COLOR_abstractmetamodel___MMLocalProperty___global))( variable1 /*property*/) /*MMMethod::global*/;
-  variable4 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL(variable4,COLOR_abstractmetamodel___MMGlobalProperty___intro))(variable4) /*MMGlobalProperty::intro*/;
-  variable4 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___local_class))(variable4) /*MMConcreteProperty::local_class*/;
-  variable4 = ((abstractmetamodel___MMLocalClass___global_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalClass___global))(variable4) /*MMLocalClass::global*/;
-  variable3 = ((abstractmetamodel___MMModule_____bra_t)CALL(variable3,COLOR_abstractmetamodel___MMModule_____bra))(variable3, variable4) /*MMSrcModule::[]*/;
-  variable2 = variable3;
-  variable3 = NIT_NULL /*decl variable prev_class*/;
-  variable4 = ((typing___TypingVisitor___explicit_super_init_calls_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_super_init_calls))( variable0 /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
-  variable4 = ((array___AbstractArray___is_empty_t)CALL(variable4,COLOR_abstract_collection___Collection___is_empty))(variable4) /*Array::is_empty*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable4)))) { /*if*/
-    variable4 = ((typing___TypingVisitor___explicit_super_init_calls_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_super_init_calls))( variable0 /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
-    variable4 = ((abstract_collection___IndexedCollection___last_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___last))(variable4) /*Array::last*/;
-    variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___global))(variable4) /*MMMethod::global*/;
-    variable4 = ((abstractmetamodel___MMGlobalProperty___intro_t)CALL(variable4,COLOR_abstractmetamodel___MMGlobalProperty___intro))(variable4) /*MMGlobalProperty::intro*/;
-    variable4 = ((abstractmetamodel___MMLocalProperty___local_class_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___local_class))(variable4) /*MMConcreteProperty::local_class*/;
-    variable3 = variable4 /*prev_class=*/;
-  }
-  variable5 = ((syntax_base___AbsSyntaxVisitor___local_class_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_class))( variable0 /*v*/) /*TypingVisitor::local_class*/;
-  variable5 = ((abstractmetamodel___MMLocalClass___cshe_t)CALL(variable5,COLOR_abstractmetamodel___MMLocalClass___cshe))(variable5) /*MMSrcLocalClass::cshe*/;
-  variable5 = ((partial_order___PartialOrderElement___reverse_linear_extension_t)CALL(variable5,COLOR_partial_order___PartialOrderElement___reverse_linear_extension))(variable5) /*PartialOrderElement::reverse_linear_extension*/;
-  variable4 = variable5;
-  variable5 = ((syntax_base___AbsSyntaxVisitor___local_class_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_class))( variable0 /*v*/) /*TypingVisitor::local_class*/;
-  variable5 = TAG_Bool(( variable2 /*cla*/ == variable5) || (( variable2 /*cla*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*cla*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*cla*/,variable5)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*cla*/,COLOR_kernel___Object_____eqeq))( variable2 /*cla*/, variable5) /*MMLocalClass::==*/)))));
-  if (UNTAG_Bool(variable5)) { /*if*/
-    ((typing___TypingVisitor___explicit_other_init_call__eq_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_other_init_call__eq))( variable0 /*v*/,  TAG_Bool(true)) /*TypingVisitor::explicit_other_init_call=*/;
+  struct trace_t trace = {NULL, NULL, 1171, LOCATE_typing___ASuperInitCall___register_super_init_call};
+    static val_t once_value_215 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_216 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_217 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_218 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_219 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_220 = NIT_NULL; /* Once value for string variable[8]*/
+        static val_t once_value_221 = NIT_NULL; /* Once value for string variable[8]*/
+        static val_t once_value_222 = NIT_NULL; /* Once value for string variable[8]*/
+               static val_t once_value_224 = NIT_NULL; /* Once value for string variable[12]*/
+               static val_t once_value_225 = NIT_NULL; /* Once value for string variable[12]*/
+               static val_t once_value_226 = NIT_NULL; /* Once value for string variable[12]*/
+  val_t variable[13];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_prod___PNode___parent(variable[0])(variable[0]) /*PNode::parent*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___TypingVisitor___top_block( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::top_block*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[4] == variable[5]) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4],variable[5])):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4], variable[5]) /*Object::==*/)))))));
+  /* Ensure var variable[4]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[4])) { /* and */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___top_block( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::top_block*/;
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[0] == variable[4]) || ((variable[0] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[0])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[0],variable[4])):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[0])(variable[0], variable[4]) /*Object::==*/)))))));
+  }
+  /* Register variable[4]: Result */
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_215 != NIT_NULL) variable[5] = once_value_215;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: Constructor invocation "), TAG_Int(30)) /*new String*/;
+      once_value_215 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    variable[5] =  variable[2] /*property*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_216 != NIT_NULL) variable[5] = once_value_216;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString(" must not be in nested block."), TAG_Int(29)) /*new String*/;
+      once_value_216 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___module( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::module*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalProperty___global( variable[2] /*property*/)( variable[2] /*property*/) /*MMLocalProperty::global*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMGlobalProperty___intro(variable[6])(variable[6]) /*MMGlobalProperty::intro*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalProperty___local_class(variable[6])(variable[6]) /*MMLocalProperty::local_class*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstractmetamodel___MMLocalClass___global(variable[6])(variable[6]) /*MMLocalClass::global*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_abstractmetamodel___MMModule_____bra(variable[5])(variable[5], variable[6]) /*MMModule::[]*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Local variable */
+  variable[5] =  NIT_NULL /*null*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___explicit_super_init_calls( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstract_collection___Collection___is_empty(variable[6])(variable[6]) /*AbstractArrayRead::is_empty*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    /* Register variable[6]: Result */
+    variable[6] = CALL_typing___TypingVisitor___explicit_super_init_calls( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_abstract_collection___IndexedCollectionRead___last(variable[6])(variable[6]) /*IndexedCollectionRead::last*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_abstractmetamodel___MMLocalProperty___global(variable[6])(variable[6]) /*MMLocalProperty::global*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_abstractmetamodel___MMGlobalProperty___intro(variable[6])(variable[6]) /*MMGlobalProperty::intro*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_abstractmetamodel___MMLocalProperty___local_class(variable[6])(variable[6]) /*MMLocalProperty::local_class*/;
+    variable[5] = variable[6] /*prev_class=*/;
+  }
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalClass___cshe(variable[7])(variable[7]) /*MMLocalClass::cshe*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_partial_order___PartialOrderElement___reverse_linear_extension(variable[7])(variable[7]) /*PartialOrderElement::reverse_linear_extension*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___AbsSyntaxVisitor___local_class( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_class*/;
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool(( variable[4] /*cla*/ == variable[7]) || (( variable[4] /*cla*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*cla*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*cla*/,variable[7])):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*cla*/)( variable[4] /*cla*/, variable[7]) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    CALL_typing___TypingVisitor___explicit_other_init_call__eq( variable[1] /*v*/)( variable[1] /*v*/,  TAG_Bool(true)) /*TypingVisitor::explicit_other_init_call=*/;
   } else { /*if*/
-    variable5 = ((array___AbstractArray___has_t)CALL( variable4 /*order*/,COLOR_abstract_collection___Collection___has))( variable4 /*order*/,  variable2 /*cla*/) /*Array::has*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable5)))) { /*if*/
-      variable5 = NEW_string___String___init(); /*new String*/
-      variable6 = NEW_string___String___with_native(BOX_NativeString("Error: Constructor of class "), TAG_Int(28)); /*new String*/
-      variable7 = variable6;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable7) /*String::append*/;
-      variable8 =  variable2 /*cla*/;
-      variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable8) /*String::append*/;
-      variable9 = NEW_string___String___with_native(BOX_NativeString(" must be one in "), TAG_Int(16)); /*new String*/
-      variable10 = variable9;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable10) /*String::append*/;
-      variable11 = NEW_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)); /*new String*/
-      variable11 = ((string___Collection___join_t)CALL( variable4 /*order*/,COLOR_string___Collection___join))( variable4 /*order*/, variable11) /*Array::join*/;
-      variable12 = variable11;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable12) /*String::append*/;
-      variable13 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-      variable14 = variable13;
-      ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable14) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable5) /*TypingVisitor::error*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_abstract_collection___Collection___has( variable[6] /*order*/)( variable[6] /*order*/,  variable[4] /*cla*/) /*AbstractArrayRead::has*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[7])))) { /*if*/
+      variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_217 != NIT_NULL) variable[8] = once_value_217;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Error: Constructor of class "), TAG_Int(28)) /*new String*/;
+        once_value_217 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      variable[8] =  variable[4] /*cla*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_218 != NIT_NULL) variable[8] = once_value_218;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" must be one in "), TAG_Int(16)) /*new String*/;
+        once_value_218 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_219 != NIT_NULL) variable[8] = once_value_219;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString(", "), TAG_Int(2)) /*new String*/;
+        once_value_219 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Register variable[8]: Result */
+      variable[8] = CALL_string___Collection___join( variable[6] /*order*/)( variable[6] /*order*/, variable[8]) /*Collection::join*/;
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_220 != NIT_NULL) variable[8] = once_value_220;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_220 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
     } else { /*if*/
-      variable5 = TAG_Bool(( variable2 /*cla*/ ==  variable3 /*prev_class*/) || (( variable2 /*cla*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*cla*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*cla*/, variable3 /*prev_class*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*cla*/,COLOR_kernel___Object_____eqeq))( variable2 /*cla*/,  variable3 /*prev_class*/) /*MMLocalClass::==*/)))));
-      if (UNTAG_Bool(variable5)) { /*if*/
-        variable5 = NEW_string___String___init(); /*new String*/
-        variable6 = NEW_string___String___with_native(BOX_NativeString("Error: Only one super constructor invocation of class "), TAG_Int(54)); /*new String*/
-        variable7 = variable6;
-        ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable7) /*String::append*/;
-        variable8 =  variable2 /*cla*/;
-        variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable8) /*String::append*/;
-        variable9 = NEW_string___String___with_native(BOX_NativeString(" is allowed."), TAG_Int(12)); /*new String*/
-        variable10 = variable9;
-        ((string___String___append_t)CALL(variable5,COLOR_abstract_collection___IndexedCollection___append))(variable5, variable10) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable5) /*TypingVisitor::error*/;
+      /* Register variable[7]: Result */
+      variable[7] = TAG_Bool(( variable[4] /*cla*/ ==  variable[5] /*prev_class*/) || (( variable[4] /*cla*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*cla*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*cla*/, variable[5] /*prev_class*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*cla*/)( variable[4] /*cla*/,  variable[5] /*prev_class*/) /*Object::==*/)))));
+      if (UNTAG_Bool(variable[7])) { /*if*/
+        variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[8]: Once String constant */
+        if (once_value_221 != NIT_NULL) variable[8] = once_value_221;
+        else {
+          variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Error: Only one super constructor invocation of class "), TAG_Int(54)) /*new String*/;
+          once_value_221 = variable[8];
+        }
+        /* Register variable[8]: Result */
+        /* Ensure var variable[8]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+        variable[8] =  variable[4] /*cla*/ /* Ensure var: super-string element*/;
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[8]: Once String constant */
+        if (once_value_222 != NIT_NULL) variable[8] = once_value_222;
+        else {
+          variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" is allowed."), TAG_Int(12)) /*new String*/;
+          once_value_222 = variable[8];
+        }
+        /* Register variable[8]: Result */
+        /* Ensure var variable[8]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
       } else { /*if*/
-        variable6 = TAG_Bool(( variable3 /*prev_class*/ ==  NIT_NULL /*null*/) || (( variable3 /*prev_class*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*prev_class*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*prev_class*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*prev_class*/,COLOR_kernel___Object_____eqeq))( variable3 /*prev_class*/,  NIT_NULL /*null*/) /*MMLocalClass::==*/)))));
-        variable5 = variable6;
-        variable6 = ((array___AbstractArray___iterator_t)CALL( variable4 /*order*/,COLOR_abstract_collection___Collection___iterator))( variable4 /*order*/) /*Array::iterator*/;
+        /* Register variable[7]: Local variable */
+        /* Register variable[8]: Result */
+        variable[8] = TAG_Bool(( variable[5] /*prev_class*/ ==  NIT_NULL /*null*/) || (( variable[5] /*prev_class*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*prev_class*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*prev_class*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*prev_class*/)( variable[5] /*prev_class*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+        variable[7] = variable[8];
+        /* Register variable[8]: For iterator */
+        variable[8] = CALL_abstract_collection___Collection___iterator( variable[6] /*order*/)( variable[6] /*order*/) /*AbstractArrayRead::iterator*/;
         while (true) { /*for*/
-          variable7 = ((array___ArrayIterator___is_ok_t)CALL(variable6,COLOR_abstract_collection___Iterator___is_ok))(variable6) /*ArrayIterator::is_ok*/;
-          if (!UNTAG_Bool(variable7)) break; /*for*/
-          variable7 = ((array___ArrayIterator___item_t)CALL(variable6,COLOR_abstract_collection___Iterator___item))(variable6) /*ArrayIterator::item*/;
-          variable8 = TAG_Bool(( variable7 /*c*/ ==  variable3 /*prev_class*/) || (( variable7 /*c*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable7 /*c*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable7 /*c*/, variable3 /*prev_class*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable7 /*c*/,COLOR_kernel___Object_____eqeq))( variable7 /*c*/,  variable3 /*prev_class*/) /*MMLocalClass::==*/)))));
-          if (UNTAG_Bool(variable8)) { /*if*/
-            variable5 =  TAG_Bool(true) /*last_is_found=*/;
+          /* Register variable[9]: For 'is_ok' result */
+          variable[9] = CALL_abstract_collection___Iterator___is_ok(variable[8])(variable[8]) /*ArrayIterator::is_ok*/;
+          if (!UNTAG_Bool(variable[9])) break; /*for*/
+          variable[9] = CALL_abstract_collection___Iterator___item(variable[8])(variable[8]) /*ArrayIterator::item*/ /* Ensure var: For item*/;
+          /* Register variable[10]: Local variable */
+          variable[10] = variable[9];
+          /* Register variable[11]: Result */
+          variable[11] = TAG_Bool(( variable[10] /*c*/ ==  variable[5] /*prev_class*/) || (( variable[10] /*c*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[10] /*c*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[10] /*c*/, variable[5] /*prev_class*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[10] /*c*/)( variable[10] /*c*/,  variable[5] /*prev_class*/) /*Object::==*/)))));
+          if (UNTAG_Bool(variable[11])) { /*if*/
+            variable[7] =  TAG_Bool(true) /*last_is_found=*/;
           } else { /*if*/
-            variable8 = TAG_Bool(( variable7 /*c*/ ==  variable2 /*cla*/) || (( variable7 /*c*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable7 /*c*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable7 /*c*/, variable2 /*cla*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable7 /*c*/,COLOR_kernel___Object_____eqeq))( variable7 /*c*/,  variable2 /*cla*/) /*MMLocalClass::==*/)))));
-            if (UNTAG_Bool(variable8)) { /*if*/
-              if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool( variable5 /*last_is_found*/)))) { /*if*/
-               variable8 = NEW_string___String___init(); /*new String*/
-               variable9 = NEW_string___String___with_native(BOX_NativeString("Error: Constructor of "), TAG_Int(22)); /*new String*/
-               variable10 = variable9;
-               ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable10) /*String::append*/;
-               variable11 =  variable7 /*c*/;
-               variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-               ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable11) /*String::append*/;
-               variable12 = NEW_string___String___with_native(BOX_NativeString(" must be invoked before constructor of "), TAG_Int(39)); /*new String*/
-               variable13 = variable12;
-               ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable13) /*String::append*/;
-               variable14 =  variable3 /*prev_class*/;
-               variable14 = ((string___String___to_s_t)CALL(variable14,COLOR_string___Object___to_s))(variable14) /*String::to_s*/;
-               ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable14) /*String::append*/;
-               variable15 = NEW_string___String___with_native(BOX_NativeString(""), TAG_Int(0)); /*new String*/
-               variable16 = variable15;
-               ((string___String___append_t)CALL(variable8,COLOR_abstract_collection___IndexedCollection___append))(variable8, variable16) /*String::append*/;
-               ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable8) /*TypingVisitor::error*/;
+            /* Register variable[11]: Result */
+            variable[11] = TAG_Bool(( variable[10] /*c*/ ==  variable[4] /*cla*/) || (( variable[10] /*c*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[10] /*c*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[10] /*c*/, variable[4] /*cla*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[10] /*c*/)( variable[10] /*c*/,  variable[4] /*cla*/) /*Object::==*/)))));
+            if (UNTAG_Bool(variable[11])) { /*if*/
+              if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool( variable[7] /*last_is_found*/)))) { /*if*/
+               variable[11] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+               /* Register variable[12]: Once String constant */
+               if (once_value_224 != NIT_NULL) variable[12] = once_value_224;
+               else {
+               variable[12] = NEW_String_string___String___with_native(BOX_NativeString("Error: Constructor of "), TAG_Int(22)) /*new String*/;
+               once_value_224 = variable[12];
+               }
+               /* Register variable[12]: Result */
+               /* Ensure var variable[12]: super-string element*/
+               CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11], variable[12]) /*AbstractArray::add*/;
+               variable[12] =  variable[10] /*c*/ /* Ensure var: super-string element*/;
+               CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11], CALL_string___Object___to_s(variable[12])(variable[12]) /*Object::to_s*/) /*AbstractArray::add*/;
+               /* Register variable[12]: Once String constant */
+               if (once_value_225 != NIT_NULL) variable[12] = once_value_225;
+               else {
+               variable[12] = NEW_String_string___String___with_native(BOX_NativeString(" must be invoked before constructor of "), TAG_Int(39)) /*new String*/;
+               once_value_225 = variable[12];
+               }
+               /* Register variable[12]: Result */
+               /* Ensure var variable[12]: super-string element*/
+               CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11], variable[12]) /*AbstractArray::add*/;
+               variable[12] =  variable[5] /*prev_class*/ /* Ensure var: super-string element*/;
+               CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11], CALL_string___Object___to_s(variable[12])(variable[12]) /*Object::to_s*/) /*AbstractArray::add*/;
+               /* Register variable[12]: Once String constant */
+               if (once_value_226 != NIT_NULL) variable[12] = once_value_226;
+               else {
+               variable[12] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+               once_value_226 = variable[12];
+               }
+               /* Register variable[12]: Result */
+               /* Ensure var variable[12]: super-string element*/
+               CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11], variable[12]) /*AbstractArray::add*/;
+               /* Register variable[11]: Result */
+               variable[11] = CALL_string___Object___to_s(variable[11])(variable[11]) /*Object::to_s*/;
+               CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[11]) /*AbsSyntaxVisitor::error*/;
               }
-              variable8 = ((typing___TypingVisitor___explicit_super_init_calls_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___explicit_super_init_calls))( variable0 /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
-              ((array___AbstractArray___add_t)CALL(variable8,COLOR_abstract_collection___SimpleCollection___add))(variable8,  variable1 /*property*/) /*Array::add*/;
-              goto break_83;
+              /* Register variable[11]: Result */
+              variable[11] = CALL_typing___TypingVisitor___explicit_super_init_calls( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::explicit_super_init_calls*/;
+              CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11],  variable[2] /*property*/) /*AbstractArray::add*/;
+              goto break_223;
             }
           }
-          continue_83: while(0);
-          ((array___ArrayIterator___next_t)CALL(variable6,COLOR_abstract_collection___Iterator___next))(variable6) /*ArrayIterator::next*/;
+          continue_223: while(0);
+          CALL_abstract_collection___Iterator___next(variable[8])(variable[8]) /*ArrayIterator::next*/;
         }
-        break_83: while(0);
+        break_223: while(0);
       }
     }
   }
+  return_label214: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___ANewExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ANewExpr::after_typing (src/syntax//typing.nit:906,2--925:12)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-    val_t variable3;
-    val_t variable4;
-    val_t variable5;
-    val_t variable6;
-    val_t variable7;
-    val_t variable8;
-    static val_t once_value_variable3_85; static int once_bool_variable3_85;
-    val_t variable9;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((parser_nodes___ANewExpr___n_type_t)CALL( self,COLOR_parser_nodes___ANewExpr___n_type))( self) /*ANewExpr::n_type*/;
-  variable2 = ((typing___PType___stype_t)CALL(variable2,COLOR_typing___PType___stype))(variable2) /*PType::stype*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(( variable1 /*t*/ ==  NIT_NULL /*null*/) || (( variable1 /*t*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))( variable1 /*t*/,  NIT_NULL /*null*/) /*MMType::==*/)))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    goto return_label84;
-  }
-  variable2 = ((static_type___MMType___local_class_t)CALL( variable1 /*t*/,COLOR_static_type___MMType___local_class))( variable1 /*t*/) /*MMType::local_class*/;
-  variable2 = ((abstractmetamodel___MMLocalClass___global_t)CALL(variable2,COLOR_abstractmetamodel___MMLocalClass___global))(variable2) /*MMLocalClass::global*/;
-  variable2 = ((abstractmetamodel___MMGlobalClass___is_abstract_t)CALL(variable2,COLOR_abstractmetamodel___MMGlobalClass___is_abstract))(variable2) /*MMGlobalClass::is_abstract*/;
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = NEW_string___String___init(); /*new String*/
-    variable3 = NEW_string___String___with_native(BOX_NativeString("Error: try to instantiate abstract class "), TAG_Int(41)); /*new String*/
-    variable4 = variable3;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable4) /*String::append*/;
-    variable5 = ((static_type___MMType___local_class_t)CALL( variable1 /*t*/,COLOR_static_type___MMType___local_class))( variable1 /*t*/) /*MMType::local_class*/;
-    variable6 = variable5;
-    variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable6) /*String::append*/;
-    variable7 = NEW_string___String___with_native(BOX_NativeString("."), TAG_Int(1)); /*new String*/
-    variable8 = variable7;
-    ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable8) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
-    goto return_label84;
-  }
-  variable2 = NIT_NULL /*decl variable name*/;
-  variable3 = ((parser_nodes___ANewExpr___n_id_t)CALL( self,COLOR_parser_nodes___ANewExpr___n_id))( self) /*ANewExpr::n_id*/;
-  variable3 = TAG_Bool((variable3 ==  NIT_NULL /*null*/) || ((variable3 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable3,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable3, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable3,COLOR_kernel___Object_____eqeq))(variable3,  NIT_NULL /*null*/) /*TId::==*/)))));
-  if (UNTAG_Bool(variable3)) { /*if*/
-    if (once_bool_variable3_85) variable3 = once_value_variable3_85;
-    else {
-      variable3 = NEW_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)); /*new String*/
-      variable3 = ((symbol___String___to_symbol_t)CALL(variable3,COLOR_symbol___String___to_symbol))(variable3) /*String::to_symbol*/;
-      once_value_variable3_85 = variable3;
-      once_bool_variable3_85 = true;
-    }
-    variable2 = variable3 /*name=*/;
+  struct trace_t trace = {NULL, NULL, 1208, LOCATE_typing___ANewExpr___after_typing};
+    static val_t once_value_228 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_229 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_230; static int once_bool_230; /* Once value for variable[5]*/
+      static val_t once_value_231 = NIT_NULL; /* Once value for string variable[5]*/
+    static val_t once_value_232 = NIT_NULL; /* Once value for string variable[6]*/
+    static val_t once_value_233 = NIT_NULL; /* Once value for string variable[6]*/
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___ANewExpr___n_type(variable[0])(variable[0]) /*ANewExpr::n_type*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PType___stype(variable[4])(variable[4]) /*PType::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*t*/ ==  NIT_NULL /*null*/) || (( variable[3] /*t*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*t*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*t*/)( variable[3] /*t*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label227;
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMType___local_class( variable[3] /*t*/)( variable[3] /*t*/) /*MMType::local_class*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMLocalClass___global(variable[4])(variable[4]) /*MMLocalClass::global*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMGlobalClass___is_abstract(variable[4])(variable[4]) /*MMGlobalClass::is_abstract*/;
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_228 != NIT_NULL) variable[5] = once_value_228;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: try to instantiate abstract class "), TAG_Int(41)) /*new String*/;
+      once_value_228 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_static_type___MMType___local_class( variable[3] /*t*/)( variable[3] /*t*/) /*MMType::local_class*/;
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_229 != NIT_NULL) variable[5] = once_value_229;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+      once_value_229 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    /* Ensure var variable[5]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
+    goto return_label227;
+  }
+  /* Register variable[4]: Local variable */
+  /*variable[4] is variable name*/
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ANewExpr___n_id(variable[0])(variable[0]) /*ANewExpr::n_id*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Once expression result */
+    if (once_bool_230) variable[5] = once_value_230;
+    else {
+      /* Register variable[5]: Once String constant */
+      if (once_value_231 != NIT_NULL) variable[5] = once_value_231;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)) /*new String*/;
+        once_value_231 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      /* Register variable[5]: Result */
+      variable[5] = CALL_symbol___String___to_symbol(variable[5])(variable[5]) /*String::to_symbol*/;
+      once_value_230 = variable[5];
+      once_bool_230 = true;
+    }
+    /* Register variable[5]: Result */
+    variable[4] = variable[5] /*name=*/;
   } else { /*if*/
-    variable3 = ((parser_nodes___ANewExpr___n_id_t)CALL( self,COLOR_parser_nodes___ANewExpr___n_id))( self) /*ANewExpr::n_id*/;
-    variable3 = ((syntax_base___Token___to_symbol_t)CALL(variable3,COLOR_syntax_base___Token___to_symbol))(variable3) /*TId::to_symbol*/;
-    variable2 = variable3 /*name=*/;
-  }
-  variable3 = ((parser_nodes___ANewExpr___n_args_t)CALL( self,COLOR_parser_nodes___ANewExpr___n_args))( self) /*ANewExpr::n_args*/;
-  variable3 = ((array___Collection___to_a_t)CALL(variable3,COLOR_array___Collection___to_a))(variable3) /*List::to_a*/;
-  ((typing___AAbsSendExpr___do_typing_t)CALL( self,COLOR_typing___AAbsSendExpr___do_typing))( self,  variable0 /*v*/,  variable1 /*t*/,  TAG_Bool(false),  TAG_Bool(false),  variable2 /*name*/, variable3) /*ANewExpr::do_typing*/;
-  variable3 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ANewExpr::prop*/;
-  variable3 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable3,COLOR_abstractmetamodel___MMLocalProperty___global))(variable3) /*MMMethod::global*/;
-  variable3 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable3,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable3) /*MMGlobalProperty::is_init*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable3)))) { /*if*/
-    variable3 = NEW_string___String___init(); /*new String*/
-    variable4 = NEW_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)); /*new String*/
-    variable5 = variable4;
-    ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable5) /*String::append*/;
-    variable6 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ANewExpr::prop*/;
-    variable7 = variable6;
-    variable7 = ((string___String___to_s_t)CALL(variable7,COLOR_string___Object___to_s))(variable7) /*String::to_s*/;
-    ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable7) /*String::append*/;
-    variable8 = NEW_string___String___with_native(BOX_NativeString(" is not a constructor."), TAG_Int(22)); /*new String*/
-    variable9 = variable8;
-    ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable9) /*String::append*/;
-    ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable3) /*TypingVisitor::error*/;
-  }
-  ATTR_typing___PExpr____stype( self) /*ANewExpr::_stype*/ =  variable1 /*t*/;
-  return_label84: while(false);
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___ANewExpr___n_id(variable[0])(variable[0]) /*ANewExpr::n_id*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_syntax_base___Token___to_symbol(variable[5])(variable[5]) /*Token::to_symbol*/;
+    variable[4] = variable[5] /*name=*/;
+  }
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ANewExpr___n_args(variable[0])(variable[0]) /*ANewExpr::n_args*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_array___Collection___to_a(variable[5])(variable[5]) /*Collection::to_a*/;
+  CALL_typing___AAbsSendExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/,  variable[3] /*t*/,  TAG_Bool(false),  TAG_Bool(false),  variable[4] /*name*/, variable[5],  NIT_NULL /*null*/) /*AAbsSendExpr::do_typing*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool((variable[5] ==  NIT_NULL /*null*/) || ((variable[5] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[5])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[5], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[5])(variable[5],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    goto return_label227;
+  }
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_abstractmetamodel___MMLocalProperty___global(variable[5])(variable[5]) /*MMLocalProperty::global*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[5])(variable[5]) /*MMGlobalProperty::is_init*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+    variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[6]: Once String constant */
+    if (once_value_232 != NIT_NULL) variable[6] = once_value_232;
+    else {
+      variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+      once_value_232 = variable[6];
+    }
+    /* Register variable[6]: Result */
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[6]: Once String constant */
+    if (once_value_233 != NIT_NULL) variable[6] = once_value_233;
+    else {
+      variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" is not a constructor."), TAG_Int(22)) /*new String*/;
+      once_value_233 = variable[6];
+    }
+    /* Register variable[6]: Result */
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+    goto return_label227;
+  }
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ =  variable[3] /*t*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label227: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___ASendExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1247, LOCATE_typing___ASendExpr___after_typing};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_typing___ASendExpr___do_all_typing(variable[0])(variable[0],  variable[1] /*v*/) /*ASendExpr::do_all_typing*/;
+  return_label234: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___ASendExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASendExpr::name (src/syntax//typing.nit:932,2--933:18)"};
+  struct trace_t trace = {NULL, NULL, 1238, LOCATE_typing___ASendExpr___name};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method name called (src/syntax//typing.nit:932,2)\n");
+  trace.file = LOCATE_typing;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_typing, 1238);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t typing___ASendExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASendExpr::raw_arguments (src/syntax//typing.nit:935,2--936:32)"};
+  struct trace_t trace = {NULL, NULL, 1241, LOCATE_typing___ASendExpr___raw_arguments};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method raw_arguments called (src/syntax//typing.nit:935,2)\n");
+  trace.file = LOCATE_typing;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_typing, 1241);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
-void typing___ASendExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASendExpr::after_typing (src/syntax//typing.nit:938,2--940:17)"};
-  val_t variable0;
+val_t typing___ASendExpr___closure_defs(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1244, LOCATE_typing___ASendExpr___closure_defs};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((typing___ASendExpr___do_all_typing_t)CALL( self,COLOR_typing___ASendExpr___do_all_typing))( self,  variable0 /*v*/) /*ASendExpr::do_all_typing*/;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  NIT_NULL /*null*/;
+  goto return_label235;
+  return_label235: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___ASendExpr___do_all_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1252, LOCATE_typing___ASendExpr___do_all_typing};
+      static val_t once_value_237 = NIT_NULL; /* Once value for string variable[4]*/
+      static val_t once_value_238 = NIT_NULL; /* Once value for string variable[4]*/
+        static val_t once_value_239 = NIT_NULL; /* Once value for string variable[4]*/
+        static val_t once_value_240 = NIT_NULL; /* Once value for string variable[4]*/
+  val_t variable[9];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label236;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___is_implicit_self(variable[4])(variable[4]) /*PExpr::is_implicit_self*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PExpr___is_self(variable[5])(variable[5]) /*PExpr::is_self*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___ASendExpr___name(variable[0])(variable[0]) /*ASendExpr::name*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___ASendExpr___raw_arguments(variable[0])(variable[0]) /*ASendExpr::raw_arguments*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_typing___ASendExpr___closure_defs(variable[0])(variable[0]) /*ASendExpr::closure_defs*/;
+  CALL_typing___AAbsSendExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/, variable[3], variable[4], variable[5], variable[6], variable[7], variable[8]) /*AAbsSendExpr::do_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label236;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMLocalProperty___global(variable[3])(variable[3]) /*MMLocalProperty::global*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[3])(variable[3]) /*MMGlobalProperty::is_init*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_abstractmetamodel___MMLocalProperty___global(variable[3])(variable[3]) /*MMLocalProperty::global*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[3])(variable[3]) /*MMGlobalProperty::is_init*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+      variable[3] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[4]: Once String constant */
+      if (once_value_237 != NIT_NULL) variable[4] = once_value_237;
+      else {
+        variable[4] = NEW_String_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)) /*new String*/;
+        once_value_237 = variable[4];
+      }
+      /* Register variable[4]: Result */
+      /* Ensure var variable[4]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+      /* Register variable[4]: Result */
+      variable[4] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+      /* Ensure var variable[4]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[4]: Once String constant */
+      if (once_value_238 != NIT_NULL) variable[4] = once_value_238;
+      else {
+        variable[4] = NEW_String_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)) /*new String*/;
+        once_value_238 = variable[4];
+      }
+      /* Register variable[4]: Result */
+      /* Ensure var variable[4]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+      /* Register variable[3]: Result */
+      variable[3] = CALL_string___Object___to_s(variable[3])(variable[3]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[3]: Result */
+      variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+      /* Register variable[3]: Result */
+      variable[3] = CALL_typing___PExpr___is_self(variable[3])(variable[3]) /*PExpr::is_self*/;
+      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+        variable[3] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[4]: Once String constant */
+        if (once_value_239 != NIT_NULL) variable[4] = once_value_239;
+        else {
+          variable[4] = NEW_String_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)) /*new String*/;
+          once_value_239 = variable[4];
+        }
+        /* Register variable[4]: Result */
+        /* Ensure var variable[4]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+        /* Register variable[4]: Result */
+        variable[4] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+        /* Ensure var variable[4]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[4]: Once String constant */
+        if (once_value_240 != NIT_NULL) variable[4] = once_value_240;
+        else {
+          variable[4] = NEW_String_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)) /*new String*/;
+          once_value_240 = variable[4];
+        }
+        /* Register variable[4]: Result */
+        /* Ensure var variable[4]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[3])(variable[3], variable[4]) /*AbstractArray::add*/;
+        /* Register variable[3]: Result */
+        variable[3] = CALL_string___Object___to_s(variable[3])(variable[3]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::error*/;
+      } else { /*if*/
+        /* Register variable[3]: Result */
+        variable[3] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+        CALL_typing___ASuperInitCall___register_super_init_call(variable[0])(variable[0],  variable[1] /*v*/, variable[3]) /*ASuperInitCall::register_super_init_call*/;
+      }
+    }
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___AAbsSendExpr___return_type(variable[0])(variable[0]) /*AAbsSendExpr::return_type*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label236: while(false);
   tracehead = trace.prev;
   return;
 }
-void typing___ASendExpr___do_all_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASendExpr::do_all_typing (src/syntax//typing.nit:943,2--958:12)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-      val_t variable6;
-      val_t variable7;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  variable2 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendExpr::n_expr*/;
-  variable2 = ((typing___PExpr___is_implicit_self_t)CALL(variable2,COLOR_typing___PExpr___is_implicit_self))(variable2) /*PExpr::is_implicit_self*/;
-  variable3 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendExpr::n_expr*/;
-  variable3 = ((typing___PExpr___is_self_t)CALL(variable3,COLOR_typing___PExpr___is_self))(variable3) /*PExpr::is_self*/;
-  variable4 = ((typing___ASendExpr___name_t)CALL( self,COLOR_typing___ASendExpr___name))( self) /*ASendExpr::name*/;
-  variable5 = ((typing___ASendExpr___raw_arguments_t)CALL( self,COLOR_typing___ASendExpr___raw_arguments))( self) /*ASendExpr::raw_arguments*/;
-  ((typing___AAbsSendExpr___do_typing_t)CALL( self,COLOR_typing___AAbsSendExpr___do_typing))( self,  variable0 /*v*/, variable1, variable2, variable3, variable4, variable5) /*ASendExpr::do_typing*/;
-  variable1 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-  variable1 = TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    goto return_label87;
-  }
-  variable1 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-  variable1 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable1,COLOR_abstractmetamodel___MMLocalProperty___global))(variable1) /*MMMethod::global*/;
-  variable1 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable1,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable1) /*MMGlobalProperty::is_init*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    variable1 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable1,COLOR_abstractmetamodel___MMLocalProperty___global))(variable1) /*MMSrcLocalProperty::global*/;
-    variable1 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable1,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable1) /*MMGlobalProperty::is_init*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable1)))) { /*if*/
-      variable1 = NEW_string___String___init(); /*new String*/
-      variable2 = NEW_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)); /*new String*/
-      variable3 = variable2;
-      ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable3) /*String::append*/;
-      variable4 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-      variable5 = variable4;
-      variable5 = ((string___String___to_s_t)CALL(variable5,COLOR_string___Object___to_s))(variable5) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable5) /*String::append*/;
-      variable6 = NEW_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)); /*new String*/
-      variable7 = variable6;
-      ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable7) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable1) /*TypingVisitor::error*/;
+void typing___ASendReassignExpr___do_all_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1277, LOCATE_typing___ASendReassignExpr___do_all_typing};
+      static val_t once_value_242 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_243 = NIT_NULL; /* Once value for string variable[5]*/
+        static val_t once_value_244 = NIT_NULL; /* Once value for string variable[5]*/
+        static val_t once_value_245 = NIT_NULL; /* Once value for string variable[5]*/
+  static val_t once_value_246 = NIT_NULL; /* Once value for string variable[11]*/
+  static val_t once_value_247 = NIT_NULL; /* Once value for string variable[11]*/
+      static val_t once_value_248 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_249 = NIT_NULL; /* Once value for string variable[8]*/
+        static val_t once_value_250 = NIT_NULL; /* Once value for string variable[8]*/
+        static val_t once_value_251 = NIT_NULL; /* Once value for string variable[8]*/
+  val_t variable[12];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label241;
+  }
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___ASendExpr___raw_arguments(variable[0])(variable[0]) /*ASendExpr::raw_arguments*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PExpr___is_implicit_self(variable[5])(variable[5]) /*PExpr::is_implicit_self*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___PExpr___is_self(variable[6])(variable[6]) /*PExpr::is_self*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___ASendExpr___name(variable[0])(variable[0]) /*ASendExpr::name*/;
+  CALL_typing___AAbsSendExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/, variable[4], variable[5], variable[6], variable[7],  variable[3] /*raw_args*/,  NIT_NULL /*null*/) /*AAbsSendExpr::do_typing*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool((variable[4] ==  NIT_NULL /*null*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    goto return_label241;
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMLocalProperty___global(variable[4])(variable[4]) /*MMLocalProperty::global*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[4])(variable[4]) /*MMGlobalProperty::is_init*/;
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstractmetamodel___MMLocalProperty___global(variable[4])(variable[4]) /*MMLocalProperty::global*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[4])(variable[4]) /*MMGlobalProperty::is_init*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[4])))) { /*if*/
+      variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[5]: Once String constant */
+      if (once_value_242 != NIT_NULL) variable[5] = once_value_242;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)) /*new String*/;
+        once_value_242 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+      /* Register variable[5]: Result */
+      variable[5] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[5]: Once String constant */
+      if (once_value_243 != NIT_NULL) variable[5] = once_value_243;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)) /*new String*/;
+        once_value_243 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      /* Ensure var variable[5]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+      /* Register variable[4]: Result */
+      variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
     } else { /*if*/
-      variable1 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendExpr::n_expr*/;
-      variable1 = ((typing___PExpr___is_self_t)CALL(variable1,COLOR_typing___PExpr___is_self))(variable1) /*PExpr::is_self*/;
-      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable1)))) { /*if*/
-        variable1 = NEW_string___String___init(); /*new String*/
-        variable2 = NEW_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)); /*new String*/
-        variable3 = variable2;
-        ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable3) /*String::append*/;
-        variable4 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-        variable5 = variable4;
-        variable5 = ((string___String___to_s_t)CALL(variable5,COLOR_string___Object___to_s))(variable5) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable5) /*String::append*/;
-        variable6 = NEW_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)); /*new String*/
-        variable7 = variable6;
-        ((string___String___append_t)CALL(variable1,COLOR_abstract_collection___IndexedCollection___append))(variable1, variable7) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable1) /*TypingVisitor::error*/;
-      } else { /*if*/
-        variable1 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-        ((typing___ASuperInitCall___register_super_init_call_t)CALL( self,COLOR_typing___ASuperInitCall___register_super_init_call))( self,  variable0 /*v*/, variable1) /*ASendExpr::register_super_init_call*/;
+      /* Register variable[4]: Result */
+      variable[4] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+      /* Register variable[4]: Result */
+      variable[4] = CALL_typing___PExpr___is_self(variable[4])(variable[4]) /*PExpr::is_self*/;
+      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[4])))) { /*if*/
+        variable[4] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[5]: Once String constant */
+        if (once_value_244 != NIT_NULL) variable[5] = once_value_244;
+        else {
+          variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)) /*new String*/;
+          once_value_244 = variable[5];
+        }
+        /* Register variable[5]: Result */
+        /* Ensure var variable[5]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+        /* Ensure var variable[5]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[5]: Once String constant */
+        if (once_value_245 != NIT_NULL) variable[5] = once_value_245;
+        else {
+          variable[5] = NEW_String_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)) /*new String*/;
+          once_value_245 = variable[5];
+        }
+        /* Register variable[5]: Result */
+        /* Ensure var variable[5]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[4])(variable[4], variable[5]) /*AbstractArray::add*/;
+        /* Register variable[4]: Result */
+        variable[4] = CALL_string___Object___to_s(variable[4])(variable[4]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[4]) /*AbsSyntaxVisitor::error*/;
       }
     }
   }
-  variable2 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendExpr::prop*/;
-  variable2 = ((genericity___MMLocalProperty___signature_t)CALL(variable2,COLOR_static_type___MMLocalProperty___signature))(variable2) /*MMMethod::signature*/;
-  variable2 = ((static_type___MMSignature___return_type_t)CALL(variable2,COLOR_static_type___MMSignature___return_type))(variable2) /*MMSignature::return_type*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable1 /*t*/ ==  NIT_NULL /*null*/) || (( variable1 /*t*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*t*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*t*/,COLOR_kernel___Object_____eqeq))( variable1 /*t*/,  NIT_NULL /*null*/) /*MMType::==*/)))))));
-  variable3 = variable2;
-  if (UNTAG_Bool(variable3)) { /* and */
-    variable3 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendExpr::n_expr*/;
-    variable3 = ((typing___PExpr___is_self_t)CALL(variable3,COLOR_typing___PExpr___is_self))(variable3) /*PExpr::is_self*/;
-    variable3 =  TAG_Bool(!UNTAG_Bool(variable3));
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___PExpr___stype(variable[6])(variable[6]) /*PExpr::stype*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMLocalProperty___signature_for(variable[5])(variable[5], variable[6]) /*MMLocalProperty::signature_for*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMSignature___return_type(variable[5])(variable[5]) /*MMSignature::return_type*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PExpr___is_self(variable[5])(variable[5]) /*PExpr::is_self*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_static_type___MMType___not_for_self( variable[4] /*t*/)( variable[4] /*t*/) /*MMType::not_for_self*/;
+    variable[4] = variable[5] /*t=*/;
   }
-  variable2 = variable3;
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((static_type___MMType___not_for_self_t)CALL( variable1 /*t*/,COLOR_static_type___MMType___not_for_self))( variable1 /*t*/) /*MMType::not_for_self*/;
-    variable1 = variable2 /*t=*/;
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___AReassignFormExpr___do_rvalue_typing(variable[0])(variable[0],  variable[1] /*v*/,  variable[4] /*t*/) /*AReassignFormExpr::do_rvalue_typing*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = TAG_Bool(( variable[5] /*t2*/ ==  NIT_NULL /*null*/) || (( variable[5] /*t2*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*t2*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*t2*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*t2*/)( variable[5] /*t2*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[6])) { /*if*/
+    goto return_label241;
   }
-  ATTR_typing___PExpr____stype( self) /*ASendExpr::_stype*/ =  variable1 /*t*/;
-  return_label87: while(false);
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___PExpr___stype(variable[6])(variable[6]) /*PExpr::stype*/;
+  CALL_syntax_base___AbsSyntaxVisitor___check_conform( variable[1] /*v*/)( variable[1] /*v*/, variable[0],  variable[5] /*t2*/, variable[6]) /*AbsSyntaxVisitor::check_conform*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  ATTR_typing___ASendReassignExpr____read_prop(variable[0]) /*ASendReassignExpr::_read_prop*/ = variable[6];
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___AAbsAbsSendExpr___arguments(variable[0])(variable[0]) /*AAbsAbsSendExpr::arguments*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  CALL_abstract_collection___SimpleCollection___add( variable[3] /*raw_args*/)( variable[3] /*raw_args*/, variable[7]) /*AbstractArray::add*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_syntax_base___PExpr___stype(variable[7])(variable[7]) /*PExpr::stype*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[8]: Result */
+  variable[8] = CALL_typing___PExpr___is_implicit_self(variable[8])(variable[8]) /*PExpr::is_implicit_self*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[9]: Result */
+  variable[9] = CALL_typing___PExpr___is_self(variable[9])(variable[9]) /*PExpr::is_self*/;
+  variable[10] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+  /* Register variable[11]: Once String constant */
+  if (once_value_246 != NIT_NULL) variable[11] = once_value_246;
+  else {
+    variable[11] = NEW_String_string___String___with_native(BOX_NativeString(""), TAG_Int(0)) /*new String*/;
+    once_value_246 = variable[11];
+  }
+  /* Register variable[11]: Result */
+  /* Ensure var variable[11]: super-string element*/
+  CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+  /* Register variable[11]: Result */
+  variable[11] = CALL_typing___ASendExpr___name(variable[0])(variable[0]) /*ASendExpr::name*/;
+  /* Ensure var variable[11]: super-string element*/
+  CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], CALL_string___Object___to_s(variable[11])(variable[11]) /*Object::to_s*/) /*AbstractArray::add*/;
+  /* Register variable[11]: Once String constant */
+  if (once_value_247 != NIT_NULL) variable[11] = once_value_247;
+  else {
+    variable[11] = NEW_String_string___String___with_native(BOX_NativeString("="), TAG_Int(1)) /*new String*/;
+    once_value_247 = variable[11];
+  }
+  /* Register variable[11]: Result */
+  /* Ensure var variable[11]: super-string element*/
+  CALL_abstract_collection___SimpleCollection___add(variable[10])(variable[10], variable[11]) /*AbstractArray::add*/;
+  /* Register variable[10]: Result */
+  variable[10] = CALL_string___Object___to_s(variable[10])(variable[10]) /*Object::to_s*/;
+  /* Register variable[10]: Result */
+  variable[10] = CALL_symbol___String___to_symbol(variable[10])(variable[10]) /*String::to_symbol*/;
+  CALL_typing___AAbsSendExpr___do_typing(variable[0])(variable[0],  variable[1] /*v*/, variable[7], variable[8], variable[9], variable[10],  variable[3] /*raw_args*/,  NIT_NULL /*null*/) /*AAbsSendExpr::do_typing*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool((variable[7] ==  NIT_NULL /*null*/) || ((variable[7] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[7])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[7], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[7])(variable[7],  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    goto return_label241;
+  }
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMLocalProperty___global(variable[7])(variable[7]) /*MMLocalProperty::global*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[7])(variable[7]) /*MMGlobalProperty::is_init*/;
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    /* Register variable[7]: Result */
+    variable[7] = CALL_syntax_base___AbsSyntaxVisitor___local_property( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::local_property*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_abstractmetamodel___MMLocalProperty___global(variable[7])(variable[7]) /*MMLocalProperty::global*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_abstractmetamodel___MMGlobalProperty___is_init(variable[7])(variable[7]) /*MMGlobalProperty::is_init*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[7])))) { /*if*/
+      variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_248 != NIT_NULL) variable[8] = once_value_248;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)) /*new String*/;
+        once_value_248 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[8]: Result */
+      variable[8] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_249 != NIT_NULL) variable[8] = once_value_249;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)) /*new String*/;
+        once_value_249 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[7]: Result */
+      variable[7] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_typing___PExpr___is_self(variable[7])(variable[7]) /*PExpr::is_self*/;
+      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[7])))) { /*if*/
+        variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+        /* Register variable[8]: Once String constant */
+        if (once_value_250 != NIT_NULL) variable[8] = once_value_250;
+        else {
+          variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)) /*new String*/;
+          once_value_250 = variable[8];
+        }
+        /* Register variable[8]: Result */
+        /* Ensure var variable[8]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+        /* Register variable[8]: Result */
+        variable[8] = CALL_typing___AAbsSendExpr___prop(variable[0])(variable[0]) /*AAbsSendExpr::prop*/;
+        /* Ensure var variable[8]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+        /* Register variable[8]: Once String constant */
+        if (once_value_251 != NIT_NULL) variable[8] = once_value_251;
+        else {
+          variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)) /*new String*/;
+          once_value_251 = variable[8];
+        }
+        /* Register variable[8]: Result */
+        /* Ensure var variable[8]: super-string element*/
+        CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+      }
+    }
+  }
+  ATTR_typing___AAbsAbsSendExpr____arguments(variable[0]) /*AAbsAbsSendExpr::_arguments*/ =  variable[6] /*old_args*/;
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label241: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t typing___ASendReassignExpr___read_prop(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASendReassignExpr::read_prop (src/syntax//typing.nit:965,2--35)"};
+  struct trace_t trace = {NULL, NULL, 1276, LOCATE_typing___ASendReassignExpr___read_prop};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
   tracehead = trace.prev;
   return ATTR_typing___ASendReassignExpr____read_prop( self) /*ASendReassignExpr::_read_prop*/;
 }
-void typing___ASendReassignExpr___do_all_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ASendReassignExpr::do_all_typing (src/syntax//typing.nit:966,2--997:23)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  val_t variable5;
-      val_t variable6;
-      val_t variable7;
-      val_t variable8;
-  val_t variable9;
-  val_t variable10;
-  val_t variable11;
-  val_t variable12;
-  val_t variable13;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((typing___ASendExpr___raw_arguments_t)CALL( self,COLOR_typing___ASendExpr___raw_arguments))( self) /*ASendReassignExpr::raw_arguments*/;
-  variable1 = variable2;
-  variable2 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable2 = ((typing___PExpr___stype_t)CALL(variable2,COLOR_syntax_base___PExpr___stype))(variable2) /*PExpr::stype*/;
-  variable3 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable3 = ((typing___PExpr___is_implicit_self_t)CALL(variable3,COLOR_typing___PExpr___is_implicit_self))(variable3) /*PExpr::is_implicit_self*/;
-  variable4 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable4 = ((typing___PExpr___is_self_t)CALL(variable4,COLOR_typing___PExpr___is_self))(variable4) /*PExpr::is_self*/;
-  variable5 = ((typing___ASendExpr___name_t)CALL( self,COLOR_typing___ASendExpr___name))( self) /*ASendReassignExpr::name*/;
-  ((typing___AAbsSendExpr___do_typing_t)CALL( self,COLOR_typing___AAbsSendExpr___do_typing))( self,  variable0 /*v*/, variable2, variable3, variable4, variable5,  variable1 /*raw_args*/) /*ASendReassignExpr::do_typing*/;
-  variable2 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  variable2 = TAG_Bool((variable2 ==  NIT_NULL /*null*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    goto return_label88;
-  }
-  variable2 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  variable2 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable2,COLOR_abstractmetamodel___MMLocalProperty___global))(variable2) /*MMMethod::global*/;
-  variable2 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable2,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable2) /*MMGlobalProperty::is_init*/;
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    variable2 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable2,COLOR_abstractmetamodel___MMLocalProperty___global))(variable2) /*MMSrcLocalProperty::global*/;
-    variable2 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable2,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable2) /*MMGlobalProperty::is_init*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-      variable2 = NEW_string___String___init(); /*new String*/
-      variable3 = NEW_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)); /*new String*/
-      variable4 = variable3;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable4) /*String::append*/;
-      variable5 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-      variable6 = variable5;
-      variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable6) /*String::append*/;
-      variable7 = NEW_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)); /*new String*/
-      variable8 = variable7;
-      ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable8) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
-    } else { /*if*/
-      variable2 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-      variable2 = ((typing___PExpr___is_self_t)CALL(variable2,COLOR_typing___PExpr___is_self))(variable2) /*PExpr::is_self*/;
-      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable2)))) { /*if*/
-        variable2 = NEW_string___String___init(); /*new String*/
-        variable3 = NEW_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)); /*new String*/
-        variable4 = variable3;
-        ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable4) /*String::append*/;
-        variable5 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-        variable6 = variable5;
-        variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable6) /*String::append*/;
-        variable7 = NEW_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)); /*new String*/
-        variable8 = variable7;
-        ((string___String___append_t)CALL(variable2,COLOR_abstract_collection___IndexedCollection___append))(variable2, variable8) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable2) /*TypingVisitor::error*/;
-      }
-    }
-  }
-  variable3 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  variable3 = ((genericity___MMLocalProperty___signature_t)CALL(variable3,COLOR_static_type___MMLocalProperty___signature))(variable3) /*MMMethod::signature*/;
-  variable3 = ((static_type___MMSignature___return_type_t)CALL(variable3,COLOR_static_type___MMSignature___return_type))(variable3) /*MMSignature::return_type*/;
-  variable2 = variable3;
-  variable3 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable3 = ((typing___PExpr___is_self_t)CALL(variable3,COLOR_typing___PExpr___is_self))(variable3) /*PExpr::is_self*/;
-  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable3)))) { /*if*/
-    variable3 = ((static_type___MMType___not_for_self_t)CALL( variable2 /*t*/,COLOR_static_type___MMType___not_for_self))( variable2 /*t*/) /*MMType::not_for_self*/;
-    variable2 = variable3 /*t=*/;
-  }
-  ((typing___AReassignFormExpr___do_lvalue_typing_t)CALL( self,COLOR_typing___AReassignFormExpr___do_lvalue_typing))( self,  variable0 /*v*/,  variable2 /*t*/) /*ASendReassignExpr::do_lvalue_typing*/;
-  variable3 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  ATTR_typing___ASendReassignExpr____read_prop( self) /*ASendReassignExpr::_read_prop*/ = variable3;
-  variable4 = ((typing___AAbsSendExpr___arguments_t)CALL( self,COLOR_typing___AAbsSendExpr___arguments))( self) /*ASendReassignExpr::arguments*/;
-  variable3 = variable4;
-  variable4 = ((parser_nodes___AReassignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_value))( self) /*ASendReassignExpr::n_value*/;
-  ((array___AbstractArray___add_t)CALL( variable1 /*raw_args*/,COLOR_abstract_collection___SimpleCollection___add))( variable1 /*raw_args*/, variable4) /*Array::add*/;
-  variable4 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable4 = ((typing___PExpr___stype_t)CALL(variable4,COLOR_syntax_base___PExpr___stype))(variable4) /*PExpr::stype*/;
-  variable5 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable5 = ((typing___PExpr___is_implicit_self_t)CALL(variable5,COLOR_typing___PExpr___is_implicit_self))(variable5) /*PExpr::is_implicit_self*/;
-  variable6 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-  variable6 = ((typing___PExpr___is_self_t)CALL(variable6,COLOR_typing___PExpr___is_self))(variable6) /*PExpr::is_self*/;
-  variable7 = NEW_string___String___init(); /*new String*/
-  variable8 = NEW_string___String___with_native(BOX_NativeString(""), TAG_Int(0)); /*new String*/
-  variable9 = variable8;
-  ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable9) /*String::append*/;
-  variable10 = ((typing___ASendExpr___name_t)CALL( self,COLOR_typing___ASendExpr___name))( self) /*ASendReassignExpr::name*/;
-  variable11 = variable10;
-  variable11 = ((string___String___to_s_t)CALL(variable11,COLOR_string___Object___to_s))(variable11) /*String::to_s*/;
-  ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable11) /*String::append*/;
-  variable12 = NEW_string___String___with_native(BOX_NativeString("="), TAG_Int(1)); /*new String*/
-  variable13 = variable12;
-  ((string___String___append_t)CALL(variable7,COLOR_abstract_collection___IndexedCollection___append))(variable7, variable13) /*String::append*/;
-  variable7 = ((symbol___String___to_symbol_t)CALL(variable7,COLOR_symbol___String___to_symbol))(variable7) /*String::to_symbol*/;
-  ((typing___AAbsSendExpr___do_typing_t)CALL( self,COLOR_typing___AAbsSendExpr___do_typing))( self,  variable0 /*v*/, variable4, variable5, variable6, variable7,  variable1 /*raw_args*/) /*ASendReassignExpr::do_typing*/;
-  variable4 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  variable4 = TAG_Bool((variable4 ==  NIT_NULL /*null*/) || ((variable4 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable4,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable4, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable4,COLOR_kernel___Object_____eqeq))(variable4,  NIT_NULL /*null*/) /*MMMethod::==*/)))));
-  if (UNTAG_Bool(variable4)) { /*if*/
-    goto return_label88;
-  }
-  variable4 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-  variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___global))(variable4) /*MMMethod::global*/;
-  variable4 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable4,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable4) /*MMGlobalProperty::is_init*/;
-  if (UNTAG_Bool(variable4)) { /*if*/
-    variable4 = ((syntax_base___AbsSyntaxVisitor___local_property_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___local_property))( variable0 /*v*/) /*TypingVisitor::local_property*/;
-    variable4 = ((abstractmetamodel___MMLocalProperty___global_t)CALL(variable4,COLOR_abstractmetamodel___MMLocalProperty___global))(variable4) /*MMSrcLocalProperty::global*/;
-    variable4 = ((abstractmetamodel___MMGlobalProperty___is_init_t)CALL(variable4,COLOR_abstractmetamodel___MMGlobalProperty___is_init))(variable4) /*MMGlobalProperty::is_init*/;
-    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable4)))) { /*if*/
-      variable4 = NEW_string___String___init(); /*new String*/
-      variable5 = NEW_string___String___with_native(BOX_NativeString("Error: try to invoke constructor "), TAG_Int(33)); /*new String*/
-      variable6 = variable5;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-      variable7 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-      variable8 = variable7;
-      variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable8) /*String::append*/;
-      variable9 = NEW_string___String___with_native(BOX_NativeString(" in a method."), TAG_Int(13)); /*new String*/
-      variable10 = variable9;
-      ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable10) /*String::append*/;
-      ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-    } else { /*if*/
-      variable4 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ASendReassignExpr::n_expr*/;
-      variable4 = ((typing___PExpr___is_self_t)CALL(variable4,COLOR_typing___PExpr___is_self))(variable4) /*PExpr::is_self*/;
-      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable4)))) { /*if*/
-        variable4 = NEW_string___String___init(); /*new String*/
-        variable5 = NEW_string___String___with_native(BOX_NativeString("Error: constructor "), TAG_Int(19)); /*new String*/
-        variable6 = variable5;
-        ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable6) /*String::append*/;
-        variable7 = ((typing___AAbsSendExpr___prop_t)CALL( self,COLOR_typing___AAbsSendExpr___prop))( self) /*ASendReassignExpr::prop*/;
-        variable8 = variable7;
-        variable8 = ((string___String___to_s_t)CALL(variable8,COLOR_string___Object___to_s))(variable8) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable8) /*String::append*/;
-        variable9 = NEW_string___String___with_native(BOX_NativeString(" is not invoken on 'self'."), TAG_Int(26)); /*new String*/
-        variable10 = variable9;
-        ((string___String___append_t)CALL(variable4,COLOR_abstract_collection___IndexedCollection___append))(variable4, variable10) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable4) /*TypingVisitor::error*/;
-      }
-    }
-  }
-  ATTR_typing___AAbsSendExpr____arguments( self) /*ASendReassignExpr::_arguments*/ =  variable3 /*old_args*/;
-  return_label88: while(false);
-  tracehead = trace.prev;
-  return;
-}
 val_t typing___ABinopExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABinopExpr::raw_arguments (src/syntax//typing.nit:1002,2--44)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = NEW_array___Array___with_capacity(TAG_Int(1)); /*new Array[PExpr]*/
-  variable1 = ((parser_nodes___ABinopExpr___n_expr2_t)CALL( self,COLOR_parser_nodes___ABinopExpr___n_expr2))( self) /*ABinopExpr::n_expr2*/;
-  ((array___AbstractArray___add_t)CALL(variable0,COLOR_abstract_collection___SimpleCollection___add))(variable0, variable1) /*Array::add*/;
-  goto return_label89;
-  return_label89: while(false);
+  struct trace_t trace = {NULL, NULL, 1317, LOCATE_typing___ABinopExpr___raw_arguments};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[2] = NEW_Array_array___Array___with_capacity(TAG_Int(1)) /*new Array[PExpr]*/ /* Ensure var: Literal array*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+  CALL_abstract_collection___SimpleCollection___add(variable[2])(variable[2], variable[3]) /*AbstractArray::add*/;
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label252;
+  return_label252: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___AEqExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1321, LOCATE_typing___AEqExpr___after_typing};
+    static val_t once_value_254 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___AEqExpr___after_typing(variable[0])(variable[0], variable[1]) /*super AEqExpr::after_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___is_typed(variable[0])(variable[0]) /*PExpr::is_typed*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label253;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMType___is_nullable(variable[3])(variable[3]) /*MMType::is_nullable*/;
+    variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3]));
+  }
+  /* Register variable[3]: Result */
+  /* Ensure var variable[3]: Left 'or' operand*/
+  if (!UNTAG_Bool(variable[3])) { /* or */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  }
+  /* Register variable[3]: Result */
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMType___is_nullable(variable[3])(variable[3]) /*MMType::is_nullable*/;
+    variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3]));
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_254 != NIT_NULL) variable[3] = once_value_254;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Warning: comparaison between null and a non nullable value."), TAG_Int(59)) /*new String*/;
+      once_value_254 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::warning*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    CALL_typing___AEqExpr___try_to_isa(variable[0])(variable[0],  variable[1] /*v*/, variable[3]) /*AEqExpr::try_to_isa*/;
+  } else { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+    if (UNTAG_Bool(variable[3])) { /*if*/
+      /* Register variable[3]: Result */
+      variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+      CALL_typing___AEqExpr___try_to_isa(variable[0])(variable[0],  variable[1] /*v*/, variable[3]) /*AEqExpr::try_to_isa*/;
+    }
+  }
+  return_label253: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
 val_t typing___AEqExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AEqExpr::name (src/syntax//typing.nit:1005,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_91; static int once_bool_variable0_91;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_91) variable0 = once_value_variable0_91;
+  struct trace_t trace = {NULL, NULL, 1320, LOCATE_typing___AEqExpr___name};
+  static val_t once_value_256; static int once_bool_256; /* Once value for variable[2]*/
+    static val_t once_value_257 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_256) variable[2] = once_value_256;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("=="), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_91 = variable0;
-    once_bool_variable0_91 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_257 != NIT_NULL) variable[2] = once_value_257;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("=="), TAG_Int(2)) /*new String*/;
+      once_value_257 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_256 = variable[2];
+    once_bool_256 = true;
   }
-  goto return_label90;
-  return_label90: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label255;
+  return_label255: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___AEqExpr___try_to_isa(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 1337, LOCATE_typing___AEqExpr___try_to_isa};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PExpr___its_variable( variable[2] /*n*/)( variable[2] /*n*/) /*PExpr::its_variable*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*variable*/ ==  NIT_NULL /*null*/) || (( variable[4] /*variable*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*variable*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*variable*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*variable*/)( variable[4] /*variable*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_syntax_base___PExpr___stype( variable[2] /*n*/)( variable[2] /*n*/) /*PExpr::stype*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_static_type___MMType___as_notnull(variable[6])(variable[6]) /*MMType::as_notnull*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext___sub_with(variable[5])(variable[5], variable[0],  variable[4] /*variable*/, variable[6]) /*VariableContext::sub_with*/;
+    ATTR_typing___PExpr____if_false_variable_ctx(variable[0]) /*PExpr::_if_false_variable_ctx*/ = variable[5];
+  }
+  return_label258: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___ANeExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1347, LOCATE_typing___ANeExpr___after_typing};
+    static val_t once_value_260 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_SUPER_typing___ANeExpr___after_typing(variable[0])(variable[0], variable[1]) /*super ANeExpr::after_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___is_typed(variable[0])(variable[0]) /*PExpr::is_typed*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label259;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMType___is_nullable(variable[3])(variable[3]) /*MMType::is_nullable*/;
+    variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3]));
+  }
+  /* Register variable[3]: Result */
+  /* Ensure var variable[3]: Left 'or' operand*/
+  if (!UNTAG_Bool(variable[3])) { /* or */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  }
+  /* Register variable[3]: Result */
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_static_type___MMType___is_nullable(variable[3])(variable[3]) /*MMType::is_nullable*/;
+    variable[3] =  TAG_Bool(!UNTAG_Bool(variable[3]));
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_260 != NIT_NULL) variable[3] = once_value_260;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Warning: comparaison between null and a non nullable value."), TAG_Int(59)) /*new String*/;
+      once_value_260 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::warning*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    CALL_typing___ANeExpr___try_to_isa(variable[0])(variable[0],  variable[1] /*v*/, variable[3]) /*ANeExpr::try_to_isa*/;
+  } else { /*if*/
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ABinopExpr___n_expr2(variable[0])(variable[0]) /*ABinopExpr::n_expr2*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+    /* Register variable[3]: Result */
+    variable[3] = TAG_Bool((variable[3]==NIT_NULL) || VAL_ISA(variable[3], COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+    if (UNTAG_Bool(variable[3])) { /*if*/
+      /* Register variable[3]: Result */
+      variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+      CALL_typing___ANeExpr___try_to_isa(variable[0])(variable[0],  variable[1] /*v*/, variable[3]) /*ANeExpr::try_to_isa*/;
+    }
+  }
+  return_label259: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
 val_t typing___ANeExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ANeExpr::name (src/syntax//typing.nit:1008,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_93; static int once_bool_variable0_93;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_93) variable0 = once_value_variable0_93;
+  struct trace_t trace = {NULL, NULL, 1346, LOCATE_typing___ANeExpr___name};
+  static val_t once_value_262; static int once_bool_262; /* Once value for variable[2]*/
+    static val_t once_value_263 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_262) variable[2] = once_value_262;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("!="), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_93 = variable0;
-    once_bool_variable0_93 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_263 != NIT_NULL) variable[2] = once_value_263;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("!="), TAG_Int(2)) /*new String*/;
+      once_value_263 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_262 = variable[2];
+    once_bool_262 = true;
   }
-  goto return_label92;
-  return_label92: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label261;
+  return_label261: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___ANeExpr___try_to_isa(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 1363, LOCATE_typing___ANeExpr___try_to_isa};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_typing___PExpr___its_variable( variable[2] /*n*/)( variable[2] /*n*/) /*PExpr::its_variable*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*variable*/ ==  NIT_NULL /*null*/) || (( variable[4] /*variable*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*variable*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*variable*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*variable*/)( variable[4] /*variable*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_syntax_base___PExpr___stype( variable[2] /*n*/)( variable[2] /*n*/) /*PExpr::stype*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_static_type___MMType___as_notnull(variable[6])(variable[6]) /*MMType::as_notnull*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext___sub_with(variable[5])(variable[5], variable[0],  variable[4] /*variable*/, variable[6]) /*VariableContext::sub_with*/;
+    ATTR_typing___PExpr____if_true_variable_ctx(variable[0]) /*PExpr::_if_true_variable_ctx*/ = variable[5];
+  }
+  return_label264: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
 val_t typing___ALtExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ALtExpr::name (src/syntax//typing.nit:1011,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_95; static int once_bool_variable0_95;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_95) variable0 = once_value_variable0_95;
+  struct trace_t trace = {NULL, NULL, 1372, LOCATE_typing___ALtExpr___name};
+  static val_t once_value_266; static int once_bool_266; /* Once value for variable[2]*/
+    static val_t once_value_267 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_266) variable[2] = once_value_266;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("<"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_95 = variable0;
-    once_bool_variable0_95 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_267 != NIT_NULL) variable[2] = once_value_267;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("<"), TAG_Int(1)) /*new String*/;
+      once_value_267 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_266 = variable[2];
+    once_bool_266 = true;
   }
-  goto return_label94;
-  return_label94: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label265;
+  return_label265: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ALeExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ALeExpr::name (src/syntax//typing.nit:1014,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_97; static int once_bool_variable0_97;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_97) variable0 = once_value_variable0_97;
+  struct trace_t trace = {NULL, NULL, 1375, LOCATE_typing___ALeExpr___name};
+  static val_t once_value_269; static int once_bool_269; /* Once value for variable[2]*/
+    static val_t once_value_270 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_269) variable[2] = once_value_269;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("<="), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_97 = variable0;
-    once_bool_variable0_97 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_270 != NIT_NULL) variable[2] = once_value_270;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("<="), TAG_Int(2)) /*new String*/;
+      once_value_270 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_269 = variable[2];
+    once_bool_269 = true;
   }
-  goto return_label96;
-  return_label96: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label268;
+  return_label268: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AGtExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AGtExpr::name (src/syntax//typing.nit:1017,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_99; static int once_bool_variable0_99;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_99) variable0 = once_value_variable0_99;
+  struct trace_t trace = {NULL, NULL, 1378, LOCATE_typing___AGtExpr___name};
+  static val_t once_value_272; static int once_bool_272; /* Once value for variable[2]*/
+    static val_t once_value_273 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_272) variable[2] = once_value_272;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString(">"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_99 = variable0;
-    once_bool_variable0_99 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_273 != NIT_NULL) variable[2] = once_value_273;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString(">"), TAG_Int(1)) /*new String*/;
+      once_value_273 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_272 = variable[2];
+    once_bool_272 = true;
   }
-  goto return_label98;
-  return_label98: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label271;
+  return_label271: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AGeExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AGeExpr::name (src/syntax//typing.nit:1020,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_101; static int once_bool_variable0_101;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_101) variable0 = once_value_variable0_101;
+  struct trace_t trace = {NULL, NULL, 1381, LOCATE_typing___AGeExpr___name};
+  static val_t once_value_275; static int once_bool_275; /* Once value for variable[2]*/
+    static val_t once_value_276 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_275) variable[2] = once_value_275;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString(">="), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_101 = variable0;
-    once_bool_variable0_101 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_276 != NIT_NULL) variable[2] = once_value_276;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString(">="), TAG_Int(2)) /*new String*/;
+      once_value_276 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_275 = variable[2];
+    once_bool_275 = true;
   }
-  goto return_label100;
-  return_label100: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label274;
+  return_label274: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___APlusExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::APlusExpr::name (src/syntax//typing.nit:1023,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_103; static int once_bool_variable0_103;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_103) variable0 = once_value_variable0_103;
+  struct trace_t trace = {NULL, NULL, 1384, LOCATE_typing___APlusExpr___name};
+  static val_t once_value_278; static int once_bool_278; /* Once value for variable[2]*/
+    static val_t once_value_279 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_278) variable[2] = once_value_278;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("+"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_103 = variable0;
-    once_bool_variable0_103 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_279 != NIT_NULL) variable[2] = once_value_279;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("+"), TAG_Int(1)) /*new String*/;
+      once_value_279 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_278 = variable[2];
+    once_bool_278 = true;
   }
-  goto return_label102;
-  return_label102: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label277;
+  return_label277: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AMinusExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AMinusExpr::name (src/syntax//typing.nit:1026,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_105; static int once_bool_variable0_105;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_105) variable0 = once_value_variable0_105;
+  struct trace_t trace = {NULL, NULL, 1387, LOCATE_typing___AMinusExpr___name};
+  static val_t once_value_281; static int once_bool_281; /* Once value for variable[2]*/
+    static val_t once_value_282 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_281) variable[2] = once_value_281;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("-"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_105 = variable0;
-    once_bool_variable0_105 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_282 != NIT_NULL) variable[2] = once_value_282;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("-"), TAG_Int(1)) /*new String*/;
+      once_value_282 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_281 = variable[2];
+    once_bool_281 = true;
   }
-  goto return_label104;
-  return_label104: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label280;
+  return_label280: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AStarshipExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AStarshipExpr::name (src/syntax//typing.nit:1029,2--47)"};
-  val_t variable0;
-  static val_t once_value_variable0_107; static int once_bool_variable0_107;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_107) variable0 = once_value_variable0_107;
+  struct trace_t trace = {NULL, NULL, 1390, LOCATE_typing___AStarshipExpr___name};
+  static val_t once_value_284; static int once_bool_284; /* Once value for variable[2]*/
+    static val_t once_value_285 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_284) variable[2] = once_value_284;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("<=>"), TAG_Int(3)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_107 = variable0;
-    once_bool_variable0_107 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_285 != NIT_NULL) variable[2] = once_value_285;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("<=>"), TAG_Int(3)) /*new String*/;
+      once_value_285 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_284 = variable[2];
+    once_bool_284 = true;
   }
-  goto return_label106;
-  return_label106: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label283;
+  return_label283: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AStarExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AStarExpr::name (src/syntax//typing.nit:1032,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_109; static int once_bool_variable0_109;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_109) variable0 = once_value_variable0_109;
+  struct trace_t trace = {NULL, NULL, 1393, LOCATE_typing___AStarExpr___name};
+  static val_t once_value_287; static int once_bool_287; /* Once value for variable[2]*/
+    static val_t once_value_288 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_287) variable[2] = once_value_287;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("*"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_109 = variable0;
-    once_bool_variable0_109 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_288 != NIT_NULL) variable[2] = once_value_288;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("*"), TAG_Int(1)) /*new String*/;
+      once_value_288 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_287 = variable[2];
+    once_bool_287 = true;
   }
-  goto return_label108;
-  return_label108: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label286;
+  return_label286: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ASlashExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ASlashExpr::name (src/syntax//typing.nit:1035,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_111; static int once_bool_variable0_111;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_111) variable0 = once_value_variable0_111;
+  struct trace_t trace = {NULL, NULL, 1396, LOCATE_typing___ASlashExpr___name};
+  static val_t once_value_290; static int once_bool_290; /* Once value for variable[2]*/
+    static val_t once_value_291 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_290) variable[2] = once_value_290;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("/"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_111 = variable0;
-    once_bool_variable0_111 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_291 != NIT_NULL) variable[2] = once_value_291;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("/"), TAG_Int(1)) /*new String*/;
+      once_value_291 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_290 = variable[2];
+    once_bool_290 = true;
   }
-  goto return_label110;
-  return_label110: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label289;
+  return_label289: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___APercentExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::APercentExpr::name (src/syntax//typing.nit:1038,2--45)"};
-  val_t variable0;
-  static val_t once_value_variable0_113; static int once_bool_variable0_113;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_113) variable0 = once_value_variable0_113;
+  struct trace_t trace = {NULL, NULL, 1399, LOCATE_typing___APercentExpr___name};
+  static val_t once_value_293; static int once_bool_293; /* Once value for variable[2]*/
+    static val_t once_value_294 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_293) variable[2] = once_value_293;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("%"), TAG_Int(1)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_113 = variable0;
-    once_bool_variable0_113 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_294 != NIT_NULL) variable[2] = once_value_294;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("%"), TAG_Int(1)) /*new String*/;
+      once_value_294 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_293 = variable[2];
+    once_bool_293 = true;
   }
-  goto return_label112;
-  return_label112: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label292;
+  return_label292: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AUminusExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AUminusExpr::name (src/syntax//typing.nit:1042,2--51)"};
-  val_t variable0;
-  static val_t once_value_variable0_115; static int once_bool_variable0_115;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_115) variable0 = once_value_variable0_115;
+  struct trace_t trace = {NULL, NULL, 1403, LOCATE_typing___AUminusExpr___name};
+  static val_t once_value_296; static int once_bool_296; /* Once value for variable[2]*/
+    static val_t once_value_297 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_296) variable[2] = once_value_296;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("unary -"), TAG_Int(7)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_115 = variable0;
-    once_bool_variable0_115 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_297 != NIT_NULL) variable[2] = once_value_297;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("unary -"), TAG_Int(7)) /*new String*/;
+      once_value_297 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_296 = variable[2];
+    once_bool_296 = true;
   }
-  goto return_label114;
-  return_label114: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label295;
+  return_label295: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AUminusExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AUminusExpr::raw_arguments (src/syntax//typing.nit:1043,2--40)"};
-  val_t variable0;
+  struct trace_t trace = {NULL, NULL, 1404, LOCATE_typing___AUminusExpr___raw_arguments};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 =  NIT_NULL /*null*/;
-  goto return_label116;
-  return_label116: while(false);
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  NIT_NULL /*null*/;
+  goto return_label298;
+  return_label298: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 void typing___ACallFormExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACallFormExpr::after_typing (src/syntax//typing.nit:1047,2--1063:7)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-        val_t variable4;
-        val_t variable5;
-        val_t variable6;
-        val_t variable7;
-        val_t variable8;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ASendExpr___n_expr_t)CALL( self,COLOR_parser_nodes___ASendExpr___n_expr))( self) /*ACallFormExpr::n_expr*/;
-  variable1 = ((typing___PExpr___is_implicit_self_t)CALL(variable1,COLOR_typing___PExpr___is_implicit_self))(variable1) /*PExpr::is_implicit_self*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable2 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallFormExpr::n_id*/;
-    variable2 = ((syntax_base___Token___to_symbol_t)CALL(variable2,COLOR_syntax_base___Token___to_symbol))(variable2) /*TId::to_symbol*/;
-    variable1 = variable2;
-    variable3 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-    variable3 = ((typing___VariableContext_____bra_t)CALL(variable3,COLOR_typing___VariableContext_____bra))(variable3,  variable1 /*name*/) /*VariableContext::[]*/;
-    variable2 = variable3;
-    variable3 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable2 /*variable*/ ==  NIT_NULL /*null*/) || (( variable2 /*variable*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*variable*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*variable*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*variable*/,COLOR_kernel___Object_____eqeq))( variable2 /*variable*/,  NIT_NULL /*null*/) /*Variable::==*/)))))));
-    if (UNTAG_Bool(variable3)) { /*if*/
-      variable3 = ((parser_nodes___ACallFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_args))( self) /*ACallFormExpr::n_args*/;
-      variable3 = ((list___List___is_empty_t)CALL(variable3,COLOR_abstract_collection___Collection___is_empty))(variable3) /*List::is_empty*/;
-      if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable3)))) { /*if*/
-        variable3 = NEW_string___String___init(); /*new String*/
-        variable4 = NEW_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)); /*new String*/
-        variable5 = variable4;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable5) /*String::append*/;
-        variable6 =  variable1 /*name*/;
-        variable6 = ((string___String___to_s_t)CALL(variable6,COLOR_string___Object___to_s))(variable6) /*String::to_s*/;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable6) /*String::append*/;
-        variable7 = NEW_string___String___with_native(BOX_NativeString(" is variable, not a function."), TAG_Int(29)); /*new String*/
-        variable8 = variable7;
-        ((string___String___append_t)CALL(variable3,COLOR_abstract_collection___IndexedCollection___append))(variable3, variable8) /*String::append*/;
-        ((syntax_base___AbsSyntaxVisitor___error_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___error))( variable0 /*v*/,  self, variable3) /*TypingVisitor::error*/;
-      }
-      variable4 = ((typing___ACallFormExpr___variable_create_t)CALL( self,COLOR_typing___ACallFormExpr___variable_create))( self,  variable2 /*variable*/) /*ACallFormExpr::variable_create*/;
-      variable3 = variable4;
-      ((typing___AVarFormExpr___variable__eq_t)CALL( variable3 /*vform*/,COLOR_typing___AVarFormExpr___variable__eq))( variable3 /*vform*/,  variable2 /*variable*/) /*AVarFormExpr::variable=*/;
-      ((parser_prod___Prod___replace_with_t)CALL( self,COLOR_parser_prod___PNode___replace_with))( self,  variable3 /*vform*/) /*ACallFormExpr::replace_with*/;
-      ((typing___PNode___after_typing_t)CALL( variable3 /*vform*/,COLOR_typing___PNode___after_typing))( variable3 /*vform*/,  variable0 /*v*/) /*AVarFormExpr::after_typing*/;
-      goto return_label117;
-    }
-  }
-  ((typing___ACallFormExpr___after_typing_t)CALL( self,COLOR_SUPER_typing___ACallFormExpr___after_typing))( self,  param0) /*super ACallFormExpr::after_typing*/;
-  return_label117: while(false);
+  struct trace_t trace = {NULL, NULL, 1408, LOCATE_typing___ACallFormExpr___after_typing};
+          static val_t once_value_300 = NIT_NULL; /* Once value for string variable[6]*/
+          static val_t once_value_301 = NIT_NULL; /* Once value for string variable[6]*/
+  val_t variable[9];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  /* Ensure var variable[3]: Left 'and' operand*/
+  if (UNTAG_Bool(variable[3])) { /* and */
+    /* Register variable[3]: Result */
+    variable[3] = CALL_parser_nodes___ASendExpr___n_expr(variable[0])(variable[0]) /*ASendExpr::n_expr*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_typing___PExpr___is_implicit_self(variable[3])(variable[3]) /*PExpr::is_implicit_self*/;
+  }
+  /* Register variable[3]: Result */
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Local variable */
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_syntax_base___Token___to_symbol(variable[4])(variable[4]) /*Token::to_symbol*/;
+    variable[3] = variable[4];
+    /* Register variable[4]: Local variable */
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_control_flow___VariableContext_____bra(variable[5])(variable[5],  variable[3] /*name*/) /*VariableContext::[]*/;
+    variable[4] = variable[5];
+    /* Register variable[5]: Result */
+    variable[5] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[4] /*variable*/ ==  NIT_NULL /*null*/) || (( variable[4] /*variable*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[4] /*variable*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[4] /*variable*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[4] /*variable*/)( variable[4] /*variable*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+    if (UNTAG_Bool(variable[5])) { /*if*/
+      /* Register variable[5]: Result */
+      variable[5] = TAG_Bool(( variable[4] /*variable*/==NIT_NULL) || VAL_ISA( variable[4] /*variable*/, COLOR_ClosureVariable, ID_ClosureVariable)) /*cast ClosureVariable*/;
+      if (UNTAG_Bool(variable[5])) { /*if*/
+        /* Register variable[5]: Local variable */
+        /* Register variable[6]: Result */
+        variable[6] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+        /* Register variable[7]: Result */
+        variable[7] = CALL_parser_nodes___ACallFormExpr___n_args(variable[0])(variable[0]) /*ACallFormExpr::n_args*/;
+        /* Register variable[8]: Result */
+        variable[8] = CALL_parser_nodes___ASendExpr___n_closure_defs(variable[0])(variable[0]) /*ASendExpr::n_closure_defs*/;
+        /* Register variable[6]: Result */
+        variable[6] = NEW_AClosureCallExpr_parser_prod___AClosureCallExpr___init_aclosurecallexpr(variable[6], variable[7], variable[8]) /*new AClosureCallExpr*/;
+        variable[5] = variable[6];
+        CALL_parser_prod___PNode___replace_with(variable[0])(variable[0],  variable[5] /*n*/) /*Prod::replace_with*/;
+        CALL_syntax_base___AClosureCallExpr___variable__eq( variable[5] /*n*/)( variable[5] /*n*/,  variable[4] /*variable*/) /*AClosureCallExpr::variable=*/;
+        CALL_typing___PNode___after_typing( variable[5] /*n*/)( variable[5] /*n*/,  variable[1] /*v*/) /*AClosureCallExpr::after_typing*/;
+        goto return_label299;
+      } else { /*if*/
+        /* Register variable[5]: Result */
+        variable[5] = CALL_parser_nodes___ACallFormExpr___n_args(variable[0])(variable[0]) /*ACallFormExpr::n_args*/;
+        /* Register variable[5]: Result */
+        variable[5] = CALL_abstract_collection___Collection___is_empty(variable[5])(variable[5]) /*List::is_empty*/;
+        if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+          variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_300 != NIT_NULL) variable[6] = once_value_300;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+            once_value_300 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          variable[6] =  variable[3] /*name*/ /* Ensure var: super-string element*/;
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+          /* Register variable[6]: Once String constant */
+          if (once_value_301 != NIT_NULL) variable[6] = once_value_301;
+          else {
+            variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" is variable, not a function."), TAG_Int(29)) /*new String*/;
+            once_value_301 = variable[6];
+          }
+          /* Register variable[6]: Result */
+          /* Ensure var variable[6]: super-string element*/
+          CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+          /* Register variable[5]: Result */
+          variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+          CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+          goto return_label299;
+        }
+        /* Register variable[5]: Local variable */
+        /* Register variable[6]: Result */
+        variable[6] = CALL_typing___ACallFormExpr___variable_create(variable[0])(variable[0],  variable[4] /*variable*/) /*ACallFormExpr::variable_create*/;
+        variable[5] = variable[6];
+        CALL_syntax_base___AVarFormExpr___variable__eq( variable[5] /*vform*/)( variable[5] /*vform*/,  variable[4] /*variable*/) /*AVarFormExpr::variable=*/;
+        CALL_parser_prod___PNode___replace_with(variable[0])(variable[0],  variable[5] /*vform*/) /*Prod::replace_with*/;
+        CALL_typing___PNode___after_typing( variable[5] /*vform*/)( variable[5] /*vform*/,  variable[1] /*v*/) /*PNode::after_typing*/;
+        goto return_label299;
+      }
+    }
+  }
+  CALL_SUPER_typing___ACallFormExpr___after_typing(variable[0])(variable[0], variable[1]) /*super ACallFormExpr::after_typing*/;
+  return_label299: while(false);
   tracehead = trace.prev;
   return;
 }
+val_t typing___ACallFormExpr___closure_defs(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1437, LOCATE_typing___ACallFormExpr___closure_defs};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ASendExpr___n_closure_defs(variable[0])(variable[0]) /*ASendExpr::n_closure_defs*/;
+  /* Register variable[2]: Result */
+  variable[2] = TAG_Bool((variable[2] ==  NIT_NULL /*null*/) || ((variable[2] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[2])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[2], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[2])(variable[2],  NIT_NULL /*null*/) /*Object::==*/)))));
+  /* Ensure var variable[2]: Left 'or' operand*/
+  if (!UNTAG_Bool(variable[2])) { /* or */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_parser_nodes___ASendExpr___n_closure_defs(variable[0])(variable[0]) /*ASendExpr::n_closure_defs*/;
+    /* Register variable[2]: Result */
+    variable[2] = CALL_abstract_collection___Collection___is_empty(variable[2])(variable[2]) /*List::is_empty*/;
+  }
+  /* Register variable[2]: Result */
+  if (UNTAG_Bool(variable[2])) { /*if*/
+    variable[1] =  NIT_NULL /*null*/;
+    goto return_label302;
+  } else { /*if*/
+    /* Register variable[2]: Result */
+    variable[2] = CALL_parser_nodes___ASendExpr___n_closure_defs(variable[0])(variable[0]) /*ASendExpr::n_closure_defs*/;
+    /* Register variable[2]: Result */
+    variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+    variable[1] = variable[2];
+    goto return_label302;
+  }
+  return_label302: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
 val_t typing___ACallFormExpr___variable_create(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACallFormExpr::variable_create (src/syntax//typing.nit:1066,2--1067:55)"};
+  struct trace_t trace = {NULL, NULL, 1446, LOCATE_typing___ACallFormExpr___variable_create};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method variable_create called (src/syntax//typing.nit:1066,2)\n");
+  trace.file = LOCATE_typing;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_typing, 1446);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
-val_t typing___ACallExpr___variable_create(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACallExpr::variable_create (src/syntax//typing.nit:1071,2--1073:40)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallExpr::n_id*/;
-  variable2 = NEW_parser_prod___AVarExpr___init_avarexpr(variable1); /*new AVarExpr*/
-  variable1 = variable2;
-  goto return_label118;
-  return_label118: while(false);
-  tracehead = trace.prev;
-  return variable1;
-}
 val_t typing___ACallExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallExpr::name (src/syntax//typing.nit:1076,2--41)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallExpr::n_id*/;
-  variable0 = ((syntax_base___Token___to_symbol_t)CALL(variable0,COLOR_syntax_base___Token___to_symbol))(variable0) /*TId::to_symbol*/;
-  goto return_label119;
-  return_label119: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1456, LOCATE_typing___ACallExpr___name};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___Token___to_symbol(variable[2])(variable[2]) /*Token::to_symbol*/;
+  variable[1] = variable[2];
+  goto return_label303;
+  return_label303: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___ACallExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallExpr::raw_arguments (src/syntax//typing.nit:1077,2--47)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ACallFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_args))( self) /*ACallExpr::n_args*/;
-  variable0 = ((array___Collection___to_a_t)CALL(variable0,COLOR_array___Collection___to_a))(variable0) /*List::to_a*/;
-  goto return_label120;
-  return_label120: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1457, LOCATE_typing___ACallExpr___raw_arguments};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ACallFormExpr___n_args(variable[0])(variable[0]) /*ACallFormExpr::n_args*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+  variable[1] = variable[2];
+  goto return_label304;
+  return_label304: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
-val_t typing___ACallAssignExpr___variable_create(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACallAssignExpr::variable_create (src/syntax//typing.nit:1081,2--1083:71)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallAssignExpr::n_id*/;
-  variable2 = ((parser_nodes___AAssignFormExpr___n_assign_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_assign))( self) /*ACallAssignExpr::n_assign*/;
-  variable3 = ((parser_nodes___AAssignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_value))( self) /*ACallAssignExpr::n_value*/;
-  variable4 = NEW_parser_prod___AVarAssignExpr___init_avarassignexpr(variable1, variable2, variable3); /*new AVarAssignExpr*/
-  variable1 = variable4;
-  goto return_label121;
-  return_label121: while(false);
-  tracehead = trace.prev;
-  return variable1;
+val_t typing___ACallExpr___variable_create(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1451, LOCATE_typing___ACallExpr___variable_create};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[3]: Result */
+  variable[3] = NEW_AVarExpr_parser_prod___AVarExpr___init_avarexpr(variable[3]) /*new AVarExpr*/;
+  variable[2] = variable[3];
+  goto return_label305;
+  return_label305: while(false);
+  tracehead = trace.prev;
+  return variable[2];
 }
 val_t typing___ACallAssignExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallAssignExpr::name (src/syntax//typing.nit:1086,2--54)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallAssignExpr::n_id*/;
-  variable0 = ((lexer___Token___text_t)CALL(variable0,COLOR_lexer___Token___text))(variable0) /*TId::text*/;
-  variable1 = NEW_string___String___with_native(BOX_NativeString("="), TAG_Int(1)); /*new String*/
-  variable0 = ((string___String_____plus_t)CALL(variable0,COLOR_string___String_____plus))(variable0, variable1) /*String::+*/;
-  variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-  goto return_label122;
-  return_label122: while(false);
+  struct trace_t trace = {NULL, NULL, 1466, LOCATE_typing___ACallAssignExpr___name};
+  static val_t once_value_307 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_lexer___Token___text(variable[2])(variable[2]) /*Token::text*/;
+  /* Register variable[3]: Once String constant */
+  if (once_value_307 != NIT_NULL) variable[3] = once_value_307;
+  else {
+    variable[3] = NEW_String_string___String___with_native(BOX_NativeString("="), TAG_Int(1)) /*new String*/;
+    once_value_307 = variable[3];
+  }
+  /* Register variable[3]: Result */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_string___String_____plus(variable[2])(variable[2], variable[3]) /*String::+*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+  variable[1] = variable[2];
+  goto return_label306;
+  return_label306: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ACallAssignExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallAssignExpr::raw_arguments (src/syntax//typing.nit:1087,2--1090:12)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable1 = ((parser_nodes___ACallFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_args))( self) /*ACallAssignExpr::n_args*/;
-  variable1 = ((array___Collection___to_a_t)CALL(variable1,COLOR_array___Collection___to_a))(variable1) /*List::to_a*/;
-  variable0 = variable1;
-  variable1 = ((parser_nodes___AAssignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_value))( self) /*ACallAssignExpr::n_value*/;
-  ((array___AbstractArray___add_t)CALL( variable0 /*res*/,COLOR_abstract_collection___SimpleCollection___add))( variable0 /*res*/, variable1) /*Array::add*/;
-  variable0 =  variable0 /*res*/;
-  goto return_label123;
-  return_label123: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1467, LOCATE_typing___ACallAssignExpr___raw_arguments};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Local variable */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ACallFormExpr___n_args(variable[0])(variable[0]) /*ACallFormExpr::n_args*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_array___Collection___to_a(variable[3])(variable[3]) /*Collection::to_a*/;
+  variable[2] = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  CALL_abstract_collection___SimpleCollection___add( variable[2] /*res*/)( variable[2] /*res*/, variable[3]) /*AbstractArray::add*/;
+  variable[1] =  variable[2] /*res*/;
+  goto return_label308;
+  return_label308: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
-val_t typing___ACallReassignExpr___variable_create(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::ACallReassignExpr::variable_create (src/syntax//typing.nit:1096,2--1098:78)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  val_t variable3;
-  val_t variable4;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallReassignExpr::n_id*/;
-  variable2 = ((parser_nodes___AReassignFormExpr___n_assign_op_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_assign_op))( self) /*ACallReassignExpr::n_assign_op*/;
-  variable3 = ((parser_nodes___AReassignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AReassignFormExpr___n_value))( self) /*ACallReassignExpr::n_value*/;
-  variable4 = NEW_parser_prod___AVarReassignExpr___init_avarreassignexpr(variable1, variable2, variable3); /*new AVarReassignExpr*/
-  variable1 = variable4;
-  goto return_label124;
-  return_label124: while(false);
-  tracehead = trace.prev;
-  return variable1;
+val_t typing___ACallAssignExpr___variable_create(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1461, LOCATE_typing___ACallAssignExpr___variable_create};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAssignFormExpr___n_assign(variable[0])(variable[0]) /*AAssignFormExpr::n_assign*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  /* Register variable[3]: Result */
+  variable[3] = NEW_AVarAssignExpr_parser_prod___AVarAssignExpr___init_avarassignexpr(variable[3], variable[4], variable[5]) /*new AVarAssignExpr*/;
+  variable[2] = variable[3];
+  goto return_label309;
+  return_label309: while(false);
+  tracehead = trace.prev;
+  return variable[2];
 }
 val_t typing___ACallReassignExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallReassignExpr::name (src/syntax//typing.nit:1101,2--41)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ACallFormExpr___n_id_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_id))( self) /*ACallReassignExpr::n_id*/;
-  variable0 = ((syntax_base___Token___to_symbol_t)CALL(variable0,COLOR_syntax_base___Token___to_symbol))(variable0) /*TId::to_symbol*/;
-  goto return_label125;
-  return_label125: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1481, LOCATE_typing___ACallReassignExpr___name};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_syntax_base___Token___to_symbol(variable[2])(variable[2]) /*Token::to_symbol*/;
+  variable[1] = variable[2];
+  goto return_label310;
+  return_label310: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___ACallReassignExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ACallReassignExpr::raw_arguments (src/syntax//typing.nit:1102,2--47)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ACallFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ACallFormExpr___n_args))( self) /*ACallReassignExpr::n_args*/;
-  variable0 = ((array___Collection___to_a_t)CALL(variable0,COLOR_array___Collection___to_a))(variable0) /*List::to_a*/;
-  goto return_label126;
-  return_label126: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1482, LOCATE_typing___ACallReassignExpr___raw_arguments};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ACallFormExpr___n_args(variable[0])(variable[0]) /*ACallFormExpr::n_args*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+  variable[1] = variable[2];
+  goto return_label311;
+  return_label311: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+val_t typing___ACallReassignExpr___variable_create(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1476, LOCATE_typing___ACallReassignExpr___variable_create};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ACallFormExpr___n_id(variable[0])(variable[0]) /*ACallFormExpr::n_id*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AReassignFormExpr___n_assign_op(variable[0])(variable[0]) /*AReassignFormExpr::n_assign_op*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_parser_nodes___AReassignFormExpr___n_value(variable[0])(variable[0]) /*AReassignFormExpr::n_value*/;
+  /* Register variable[3]: Result */
+  variable[3] = NEW_AVarReassignExpr_parser_prod___AVarReassignExpr___init_avarreassignexpr(variable[3], variable[4], variable[5]) /*new AVarReassignExpr*/;
+  variable[2] = variable[3];
+  goto return_label312;
+  return_label312: while(false);
+  tracehead = trace.prev;
+  return variable[2];
 }
 val_t typing___ABraExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraExpr::name (src/syntax//typing.nit:1106,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_128; static int once_bool_variable0_128;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_128) variable0 = once_value_variable0_128;
+  struct trace_t trace = {NULL, NULL, 1486, LOCATE_typing___ABraExpr___name};
+  static val_t once_value_314; static int once_bool_314; /* Once value for variable[2]*/
+    static val_t once_value_315 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_314) variable[2] = once_value_314;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("[]"), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_128 = variable0;
-    once_bool_variable0_128 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_315 != NIT_NULL) variable[2] = once_value_315;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("[]"), TAG_Int(2)) /*new String*/;
+      once_value_315 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_314 = variable[2];
+    once_bool_314 = true;
   }
-  goto return_label127;
-  return_label127: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label313;
+  return_label313: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ABraExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraExpr::raw_arguments (src/syntax//typing.nit:1107,2--47)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ABraFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ABraFormExpr___n_args))( self) /*ABraExpr::n_args*/;
-  variable0 = ((array___Collection___to_a_t)CALL(variable0,COLOR_array___Collection___to_a))(variable0) /*List::to_a*/;
-  goto return_label129;
-  return_label129: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1487, LOCATE_typing___ABraExpr___raw_arguments};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ABraFormExpr___n_args(variable[0])(variable[0]) /*ABraFormExpr::n_args*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+  variable[1] = variable[2];
+  goto return_label316;
+  return_label316: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___ABraAssignExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraAssignExpr::name (src/syntax//typing.nit:1111,2--47)"};
-  val_t variable0;
-  static val_t once_value_variable0_131; static int once_bool_variable0_131;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_131) variable0 = once_value_variable0_131;
+  struct trace_t trace = {NULL, NULL, 1491, LOCATE_typing___ABraAssignExpr___name};
+  static val_t once_value_318; static int once_bool_318; /* Once value for variable[2]*/
+    static val_t once_value_319 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_318) variable[2] = once_value_318;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("[]="), TAG_Int(3)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_131 = variable0;
-    once_bool_variable0_131 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_319 != NIT_NULL) variable[2] = once_value_319;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("[]="), TAG_Int(3)) /*new String*/;
+      once_value_319 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_318 = variable[2];
+    once_bool_318 = true;
   }
-  goto return_label130;
-  return_label130: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label317;
+  return_label317: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ABraAssignExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraAssignExpr::raw_arguments (src/syntax//typing.nit:1112,2--1115:12)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable1 = ((parser_nodes___ABraFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ABraFormExpr___n_args))( self) /*ABraAssignExpr::n_args*/;
-  variable1 = ((array___Collection___to_a_t)CALL(variable1,COLOR_array___Collection___to_a))(variable1) /*List::to_a*/;
-  variable0 = variable1;
-  variable1 = ((parser_nodes___AAssignFormExpr___n_value_t)CALL( self,COLOR_parser_nodes___AAssignFormExpr___n_value))( self) /*ABraAssignExpr::n_value*/;
-  ((array___AbstractArray___add_t)CALL( variable0 /*res*/,COLOR_abstract_collection___SimpleCollection___add))( variable0 /*res*/, variable1) /*Array::add*/;
-  variable0 =  variable0 /*res*/;
-  goto return_label132;
-  return_label132: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1492, LOCATE_typing___ABraAssignExpr___raw_arguments};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Local variable */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___ABraFormExpr___n_args(variable[0])(variable[0]) /*ABraFormExpr::n_args*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_array___Collection___to_a(variable[3])(variable[3]) /*Collection::to_a*/;
+  variable[2] = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAssignFormExpr___n_value(variable[0])(variable[0]) /*AAssignFormExpr::n_value*/;
+  CALL_abstract_collection___SimpleCollection___add( variable[2] /*res*/)( variable[2] /*res*/, variable[3]) /*AbstractArray::add*/;
+  variable[1] =  variable[2] /*res*/;
+  goto return_label320;
+  return_label320: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___ABraReassignExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraReassignExpr::name (src/syntax//typing.nit:1121,2--46)"};
-  val_t variable0;
-  static val_t once_value_variable0_134; static int once_bool_variable0_134;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_134) variable0 = once_value_variable0_134;
+  struct trace_t trace = {NULL, NULL, 1501, LOCATE_typing___ABraReassignExpr___name};
+  static val_t once_value_322; static int once_bool_322; /* Once value for variable[2]*/
+    static val_t once_value_323 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_322) variable[2] = once_value_322;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("[]"), TAG_Int(2)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_134 = variable0;
-    once_bool_variable0_134 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_323 != NIT_NULL) variable[2] = once_value_323;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("[]"), TAG_Int(2)) /*new String*/;
+      once_value_323 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_322 = variable[2];
+    once_bool_322 = true;
   }
-  goto return_label133;
-  return_label133: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label321;
+  return_label321: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___ABraReassignExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::ABraReassignExpr::raw_arguments (src/syntax//typing.nit:1122,2--47)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___ABraFormExpr___n_args_t)CALL( self,COLOR_parser_nodes___ABraFormExpr___n_args))( self) /*ABraReassignExpr::n_args*/;
-  variable0 = ((array___Collection___to_a_t)CALL(variable0,COLOR_array___Collection___to_a))(variable0) /*List::to_a*/;
-  goto return_label135;
-  return_label135: while(false);
-  tracehead = trace.prev;
-  return variable0;
+  struct trace_t trace = {NULL, NULL, 1502, LOCATE_typing___ABraReassignExpr___raw_arguments};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___ABraFormExpr___n_args(variable[0])(variable[0]) /*ABraFormExpr::n_args*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+  variable[1] = variable[2];
+  goto return_label324;
+  return_label324: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 val_t typing___AInitExpr___name(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AInitExpr::name (src/syntax//typing.nit:1126,2--48)"};
-  val_t variable0;
-  static val_t once_value_variable0_137; static int once_bool_variable0_137;
-  trace.prev = tracehead; tracehead = &trace;
-  if (once_bool_variable0_137) variable0 = once_value_variable0_137;
+  struct trace_t trace = {NULL, NULL, 1506, LOCATE_typing___AInitExpr___name};
+  static val_t once_value_326; static int once_bool_326; /* Once value for variable[2]*/
+    static val_t once_value_327 = NIT_NULL; /* Once value for string variable[2]*/
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Once expression result */
+  if (once_bool_326) variable[2] = once_value_326;
   else {
-    variable0 = NEW_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)); /*new String*/
-    variable0 = ((symbol___String___to_symbol_t)CALL(variable0,COLOR_symbol___String___to_symbol))(variable0) /*String::to_symbol*/;
-    once_value_variable0_137 = variable0;
-    once_bool_variable0_137 = true;
+    /* Register variable[2]: Once String constant */
+    if (once_value_327 != NIT_NULL) variable[2] = once_value_327;
+    else {
+      variable[2] = NEW_String_string___String___with_native(BOX_NativeString("init"), TAG_Int(4)) /*new String*/;
+      once_value_327 = variable[2];
+    }
+    /* Register variable[2]: Result */
+    /* Register variable[2]: Result */
+    variable[2] = CALL_symbol___String___to_symbol(variable[2])(variable[2]) /*String::to_symbol*/;
+    once_value_326 = variable[2];
+    once_bool_326 = true;
   }
-  goto return_label136;
-  return_label136: while(false);
+  /* Register variable[2]: Result */
+  variable[1] = variable[2];
+  goto return_label325;
+  return_label325: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t typing___AInitExpr___raw_arguments(val_t  self) {
-  struct trace_t trace = {NULL, "typing::AInitExpr::raw_arguments (src/syntax//typing.nit:1127,2--47)"};
-  val_t variable0;
+  struct trace_t trace = {NULL, NULL, 1507, LOCATE_typing___AInitExpr___raw_arguments};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_parser_nodes___AInitExpr___n_args(variable[0])(variable[0]) /*AInitExpr::n_args*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_array___Collection___to_a(variable[2])(variable[2]) /*Collection::to_a*/;
+  variable[1] = variable[2];
+  goto return_label328;
+  return_label328: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+void typing___AClosureCallExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1512, LOCATE_typing___AClosureCallExpr___after_typing};
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AClosureCallExpr___variable(variable[0])(variable[0]) /*AClosureCallExpr::variable*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___ClosureVariable___closure( variable[3] /*va*/)( variable[3] /*va*/) /*ClosureVariable::closure*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMClosure___is_break(variable[4])(variable[4]) /*MMClosure::is_break*/;
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    CALL_control_flow___VariableContext___unreash__eq(variable[4])(variable[4],  TAG_Bool(true)) /*VariableContext::unreash=*/;
+  }
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___ClosureVariable___closure( variable[3] /*va*/)( variable[3] /*va*/) /*ClosureVariable::closure*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMClosure___signature(variable[5])(variable[5]) /*MMClosure::signature*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AClosureCallExpr___n_id(variable[0])(variable[0]) /*AClosureCallExpr::n_id*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___Token___to_symbol(variable[6])(variable[6]) /*Token::to_symbol*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___AClosureCallExpr___n_args(variable[0])(variable[0]) /*AClosureCallExpr::n_args*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_array___Collection___to_a(variable[7])(variable[7]) /*Collection::to_a*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___AAbsAbsSendExpr___process_signature(variable[0])(variable[0],  variable[1] /*v*/,  variable[4] /*sig*/, variable[6], variable[7]) /*AAbsAbsSendExpr::process_signature*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AClosureCallExpr___n_closure_defs(variable[0])(variable[0]) /*AClosureCallExpr::n_closure_defs*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstract_collection___Collection___is_empty(variable[6])(variable[6]) /*List::is_empty*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[6])))) { /*if*/
+    /* Register variable[6]: Result */
+    variable[6] = CALL_parser_nodes___AClosureCallExpr___n_id(variable[0])(variable[0]) /*AClosureCallExpr::n_id*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_syntax_base___Token___to_symbol(variable[6])(variable[6]) /*Token::to_symbol*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_parser_nodes___AClosureCallExpr___n_closure_defs(variable[0])(variable[0]) /*AClosureCallExpr::n_closure_defs*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_array___Collection___to_a(variable[7])(variable[7]) /*Collection::to_a*/;
+    CALL_typing___AAbsAbsSendExpr___process_closures(variable[0])(variable[0],  variable[1] /*v*/,  variable[4] /*sig*/, variable[6], variable[7]) /*AAbsAbsSendExpr::process_closures*/;
+  }
+  /* Register variable[6]: Result */
+  variable[6] = TAG_Bool(( variable[5] /*args*/ ==  NIT_NULL /*null*/) || (( variable[5] /*args*/ != NIT_NULL) && UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*args*/)( variable[5] /*args*/,  NIT_NULL /*null*/) /*AbstractArrayRead::==*/)));
+  if (UNTAG_Bool(variable[6])) { /*if*/
+    goto return_label329;
+  }
+  ATTR_typing___AAbsAbsSendExpr____prop_signature(variable[0]) /*AAbsAbsSendExpr::_prop_signature*/ =  variable[4] /*sig*/;
+  ATTR_typing___AAbsAbsSendExpr____arguments(variable[0]) /*AAbsAbsSendExpr::_arguments*/ =  variable[5] /*args*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_static_type___MMSignature___return_type( variable[4] /*sig*/)( variable[4] /*sig*/) /*MMSignature::return_type*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[6];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label329: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___PClosureDef___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1534, LOCATE_typing___PClosureDef___accept_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PClosureDef____accept_typing2(variable[0]) /*PClosureDef::_accept_typing2*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    CALL_SUPER_typing___PClosureDef___accept_typing(variable[0])(variable[0], variable[1]) /*super PClosureDef::accept_typing*/;
+  }
+  return_label330: while(false);
+  tracehead = trace.prev;
+  return;
+}
+val_t typing___PClosureDef___escapable(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 1530, LOCATE_typing___PClosureDef___escapable};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  tracehead = trace.prev;
+  return ATTR_typing___PClosureDef____escapable( self) /*PClosureDef::_escapable*/;
+}
+void typing___PClosureDef___accept_typing2(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 1540, LOCATE_typing___PClosureDef___accept_typing2};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((parser_nodes___AInitExpr___n_args_t)CALL( self,COLOR_parser_nodes___AInitExpr___n_args))( self) /*AInitExpr::n_args*/;
-  variable0 = ((array___Collection___to_a_t)CALL(variable0,COLOR_array___Collection___to_a))(variable0) /*List::to_a*/;
-  goto return_label138;
-  return_label138: while(false);
+  trace.file = LOCATE_typing;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_typing, 1540);
+  nit_exit(1);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AClosureDef___accept_typing2(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 1544, LOCATE_typing___AClosureDef___accept_typing2};
+    static val_t once_value_332 = NIT_NULL; /* Once value for string variable[6]*/
+    static val_t once_value_333 = NIT_NULL; /* Once value for string variable[6]*/
+    static val_t once_value_334 = NIT_NULL; /* Once value for string variable[6]*/
+      static val_t once_value_336 = NIT_NULL; /* Once value for string variable[7]*/
+        static val_t once_value_337 = NIT_NULL; /* Once value for string variable[7]*/
+  val_t variable[12];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Method return value and escape marker */
+  ATTR_typing___PClosureDef____escapable(variable[0]) /*PClosureDef::_escapable*/ =  variable[2] /*esc*/;
+  /* Register variable[4]: Local variable */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_escape___EscapableClosure___closure( variable[2] /*esc*/)( variable[2] /*esc*/) /*EscapableClosure::closure*/;
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMClosure___signature(variable[5])(variable[5]) /*MMClosure::signature*/;
+  variable[4] = variable[5];
+  /* Register variable[5]: Result */
+  variable[5] = CALL_static_type___MMSignature___arity( variable[4] /*sig*/)( variable[4] /*sig*/) /*MMSignature::arity*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_parser_nodes___AClosureDef___n_id(variable[0])(variable[0]) /*AClosureDef::n_id*/;
+  /* Register variable[6]: Result */
+  variable[6] = CALL_abstract_collection___Collection___length(variable[6])(variable[6]) /*List::length*/;
+  /* Register variable[5]: Result */
+  variable[5] = TAG_Bool((variable[5])!=(variable[6]));
+  if (UNTAG_Bool(variable[5])) { /*if*/
+    variable[5] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[6]: Once String constant */
+    if (once_value_332 != NIT_NULL) variable[6] = once_value_332;
+    else {
+      variable[6] = NEW_String_string___String___with_native(BOX_NativeString("Error: "), TAG_Int(7)) /*new String*/;
+      once_value_332 = variable[6];
+    }
+    /* Register variable[6]: Result */
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_static_type___MMSignature___arity( variable[4] /*sig*/)( variable[4] /*sig*/) /*MMSignature::arity*/;
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[6]: Once String constant */
+    if (once_value_333 != NIT_NULL) variable[6] = once_value_333;
+    else {
+      variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" automatic variable names expected, "), TAG_Int(36)) /*new String*/;
+      once_value_333 = variable[6];
+    }
+    /* Register variable[6]: Result */
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_parser_nodes___AClosureDef___n_id(variable[0])(variable[0]) /*AClosureDef::n_id*/;
+    /* Register variable[6]: Result */
+    variable[6] = CALL_abstract_collection___Collection___length(variable[6])(variable[6]) /*List::length*/;
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], CALL_string___Object___to_s(variable[6])(variable[6]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[6]: Once String constant */
+    if (once_value_334 != NIT_NULL) variable[6] = once_value_334;
+    else {
+      variable[6] = NEW_String_string___String___with_native(BOX_NativeString(" found."), TAG_Int(7)) /*new String*/;
+      once_value_334 = variable[6];
+    }
+    /* Register variable[6]: Result */
+    /* Ensure var variable[6]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[5])(variable[5], variable[6]) /*AbstractArray::add*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_string___Object___to_s(variable[5])(variable[5]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[5]) /*AbsSyntaxVisitor::error*/;
+    goto return_label331;
+  }
+  /* Register variable[5]: Result */
+  variable[5] = CALL_escape___EscapableClosure___closure( variable[2] /*esc*/)( variable[2] /*esc*/) /*EscapableClosure::closure*/;
+  CALL_syntax_base___PClosureDef___closure__eq(variable[0])(variable[0], variable[5]) /*PClosureDef::closure=*/;
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___TypingVisitor___base_variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::base_variable_ctx*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[7]) /*TypingVisitor::base_variable_ctx=*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_control_flow___VariableContext___sub(variable[7])(variable[7], variable[0]) /*VariableContext::sub*/;
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[7]) /*TypingVisitor::variable_ctx=*/;
+  /* Register variable[7]: Result */
+  variable[7] = NEW_Array_array___Array___init() /*new Array[AutoVariable]*/;
+  CALL_syntax_base___PClosureDef___variables__eq(variable[0])(variable[0], variable[7]) /*PClosureDef::variables=*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_parser_nodes___AClosureDef___n_id(variable[0])(variable[0]) /*AClosureDef::n_id*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_abstract_collection___Collection___length(variable[7])(variable[7]) /*List::length*/;
+  /* Register variable[7]: Result */
+  variable[7] = NEW_Range_range___Range___without_last( TAG_Int(0), variable[7]) /*new Range[Int]*/;
+  /* Register variable[7]: For iterator */
+  variable[7] = CALL_abstract_collection___Collection___iterator(variable[7])(variable[7]) /*Range::iterator*/;
+  while (true) { /*for*/
+    /* Register variable[8]: For 'is_ok' result */
+    variable[8] = CALL_abstract_collection___Iterator___is_ok(variable[7])(variable[7]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[8])) break; /*for*/
+    variable[8] = CALL_abstract_collection___Iterator___item(variable[7])(variable[7]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[9]: Local variable */
+    variable[9] = variable[8];
+    /* Register variable[10]: Local variable */
+    /* Register variable[11]: Result */
+    variable[11] = CALL_parser_nodes___AClosureDef___n_id(variable[0])(variable[0]) /*AClosureDef::n_id*/;
+    /* Register variable[11]: Result */
+    variable[11] = CALL_abstract_collection___MapRead_____bra(variable[11])(variable[11],  variable[9] /*i*/) /*List::[]*/;
+    /* Register variable[11]: Result */
+    variable[11] = CALL_syntax_base___Token___to_symbol(variable[11])(variable[11]) /*Token::to_symbol*/;
+    /* Register variable[11]: Result */
+    variable[11] = NEW_AutoVariable_syntax_base___AutoVariable___init(variable[11], variable[0]) /*new AutoVariable*/;
+    variable[10] = variable[11];
+    /* Register variable[11]: Result */
+    variable[11] = CALL_syntax_base___PClosureDef___variables(variable[0])(variable[0]) /*PClosureDef::variables*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[11])(variable[11],  variable[10] /*va*/) /*AbstractArray::add*/;
+    /* Register variable[11]: Result */
+    variable[11] = CALL_static_type___MMSignature_____bra( variable[4] /*sig*/)( variable[4] /*sig*/,  variable[9] /*i*/) /*MMSignature::[]*/;
+    CALL_syntax_base___Variable___stype__eq( variable[10] /*va*/)( variable[10] /*va*/, variable[11]) /*Variable::stype=*/;
+    /* Register variable[11]: Result */
+    variable[11] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    CALL_control_flow___VariableContext___add(variable[11])(variable[11],  variable[10] /*va*/) /*VariableContext::add*/;
+    continue_335: while(0);
+    CALL_abstract_collection___Iterator___next(variable[7])(variable[7]) /*Iterator::next*/;
+  }
+  break_335: while(0);
+  ATTR_typing___PClosureDef____accept_typing2(variable[0]) /*PClosureDef::_accept_typing2*/ =  TAG_Bool(true);
+  CALL_typing___PNode___accept_typing(variable[0])(variable[0],  variable[1] /*v*/) /*PClosureDef::accept_typing*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+  /* Register variable[7]: Result */
+  variable[7] = CALL_control_flow___VariableContext___unreash(variable[7])(variable[7]) /*VariableContext::unreash*/;
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool((variable[7])==( TAG_Bool(false)));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    /* Register variable[7]: Result */
+    variable[7] = CALL_syntax_base___PClosureDef___closure(variable[0])(variable[0]) /*PClosureDef::closure*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_static_type___MMClosure___signature(variable[7])(variable[7]) /*MMClosure::signature*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_static_type___MMSignature___return_type(variable[7])(variable[7]) /*MMSignature::return_type*/;
+    /* Register variable[7]: Result */
+    variable[7] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[7] ==  NIT_NULL /*null*/) || ((variable[7] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[7])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[7], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[7])(variable[7],  NIT_NULL /*null*/) /*Object::==*/)))))));
+    if (UNTAG_Bool(variable[7])) { /*if*/
+      /* Register variable[7]: Once String constant */
+      if (once_value_336 != NIT_NULL) variable[7] = once_value_336;
+      else {
+        variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Control error: Reached end of block (a 'continue' with a value was expected)."), TAG_Int(77)) /*new String*/;
+        once_value_336 = variable[7];
+      }
+      /* Register variable[7]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+    } else { /*if*/
+      /* Register variable[7]: Result */
+      variable[7] = CALL_syntax_base___PClosureDef___closure(variable[0])(variable[0]) /*PClosureDef::closure*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_static_type___MMClosure___is_break(variable[7])(variable[7]) /*MMClosure::is_break*/;
+      if (UNTAG_Bool(variable[7])) { /*if*/
+        /* Register variable[7]: Once String constant */
+        if (once_value_337 != NIT_NULL) variable[7] = once_value_337;
+        else {
+          variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Control error: Reached end of break block (a 'break' was expected)."), TAG_Int(67)) /*new String*/;
+          once_value_337 = variable[7];
+        }
+        /* Register variable[7]: Result */
+        CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::error*/;
+      }
+    }
+  }
+  CALL_typing___TypingVisitor___variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[5] /*old_var_ctx*/) /*TypingVisitor::variable_ctx=*/;
+  CALL_typing___TypingVisitor___base_variable_ctx__eq( variable[1] /*v*/)( variable[1] /*v*/,  variable[6] /*old_base_var_ctx*/) /*TypingVisitor::base_variable_ctx=*/;
+  return_label331: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___ATypeCheckExpr___check_expr_cast(val_t  self, val_t  param0, val_t  param1, val_t  param2) {
+  struct trace_t trace = {NULL, NULL, 1585, LOCATE_typing___ATypeCheckExpr___check_expr_cast};
+    static val_t once_value_339 = NIT_NULL; /* Once value for string variable[8]*/
+    static val_t once_value_340 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_341 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_342 = NIT_NULL; /* Once value for string variable[8]*/
+      static val_t once_value_343 = NIT_NULL; /* Once value for string variable[8]*/
+            static val_t once_value_344 = NIT_NULL; /* Once value for string variable[7]*/
+            static val_t once_value_345 = NIT_NULL; /* Once value for string variable[7]*/
+  val_t variable[9];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  /* Register variable[3]: Local variable */
+  variable[3] =  param2;
+  /* Register variable[4]: Method return value and escape marker */
+  /* Register variable[5]: Result */
+  variable[5] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/,  variable[2] /*n_expr*/) /*AbsSyntaxVisitor::check_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[5])))) { /*if*/
+    goto return_label338;
+  }
+  /* Register variable[5]: Local variable */
+  /* Register variable[6]: Result */
+  variable[6] = CALL_syntax_base___PExpr___stype( variable[2] /*n_expr*/)( variable[2] /*n_expr*/) /*PExpr::stype*/;
+  variable[5] = variable[6];
+  /* Register variable[6]: Local variable */
+  /* Register variable[7]: Result */
+  variable[7] = CALL_typing___PType___stype( variable[3] /*n_type*/)( variable[3] /*n_type*/) /*PType::stype*/;
+  variable[6] = variable[7];
+  /* Register variable[7]: Result */
+  variable[7] = TAG_Bool(( variable[5] /*etype*/ ==  variable[6] /*ttype*/) || (( variable[5] /*etype*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*etype*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*etype*/, variable[6] /*ttype*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*etype*/)( variable[5] /*etype*/,  variable[6] /*ttype*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[7])) { /*if*/
+    variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(3)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_339 != NIT_NULL) variable[8] = once_value_339;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Warning: Expression is already a "), TAG_Int(33)) /*new String*/;
+      once_value_339 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    variable[8] =  variable[6] /*ttype*/ /* Ensure var: super-string element*/;
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+    /* Register variable[8]: Once String constant */
+    if (once_value_340 != NIT_NULL) variable[8] = once_value_340;
+    else {
+      variable[8] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+      once_value_340 = variable[8];
+    }
+    /* Register variable[8]: Result */
+    /* Ensure var variable[8]: super-string element*/
+    CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+    /* Register variable[7]: Result */
+    variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+    CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::warning*/;
+  } else { /*if*/
+    /* Register variable[7]: Result */
+    variable[7] = CALL_static_type___MMType_____l( variable[5] /*etype*/)( variable[5] /*etype*/,  variable[6] /*ttype*/) /*MMType::<*/;
+    if (UNTAG_Bool(variable[7])) { /*if*/
+      variable[7] = NEW_Array_array___Array___with_capacity(TAG_Int(5)) /*new Array[String]*/ /* Ensure var: Array (for super-string)*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_341 != NIT_NULL) variable[8] = once_value_341;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString("Warning: Expression is already a "), TAG_Int(33)) /*new String*/;
+        once_value_341 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      variable[8] =  variable[6] /*ttype*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_342 != NIT_NULL) variable[8] = once_value_342;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString(" since it is a "), TAG_Int(15)) /*new String*/;
+        once_value_342 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      variable[8] =  variable[5] /*etype*/ /* Ensure var: super-string element*/;
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], CALL_string___Object___to_s(variable[8])(variable[8]) /*Object::to_s*/) /*AbstractArray::add*/;
+      /* Register variable[8]: Once String constant */
+      if (once_value_343 != NIT_NULL) variable[8] = once_value_343;
+      else {
+        variable[8] = NEW_String_string___String___with_native(BOX_NativeString("."), TAG_Int(1)) /*new String*/;
+        once_value_343 = variable[8];
+      }
+      /* Register variable[8]: Result */
+      /* Ensure var variable[8]: super-string element*/
+      CALL_abstract_collection___SimpleCollection___add(variable[7])(variable[7], variable[8]) /*AbstractArray::add*/;
+      /* Register variable[7]: Result */
+      variable[7] = CALL_string___Object___to_s(variable[7])(variable[7]) /*Object::to_s*/;
+      CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::warning*/;
+    } else { /*if*/
+      /* Register variable[7]: Result */
+      variable[7] = CALL_static_type___MMType___is_nullable( variable[5] /*etype*/)( variable[5] /*etype*/) /*MMType::is_nullable*/;
+      /* Ensure var variable[7]: Left 'and' operand*/
+      if (UNTAG_Bool(variable[7])) { /* and */
+        /* Register variable[7]: Result */
+        variable[7] = CALL_static_type___MMType___as_notnull( variable[5] /*etype*/)( variable[5] /*etype*/) /*MMType::as_notnull*/;
+        /* Register variable[7]: Result */
+        variable[7] = TAG_Bool((variable[7] ==  variable[6] /*ttype*/) || ((variable[7] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[7])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[7], variable[6] /*ttype*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[7])(variable[7],  variable[6] /*ttype*/) /*Object::==*/)))));
+      }
+      /* Register variable[7]: Result */
+      if (UNTAG_Bool(variable[7])) { /*if*/
+        /* Register variable[7]: Result */
+        variable[7] = TAG_Bool(( variable[6] /*ttype*/==NIT_NULL) || VAL_ISA( variable[6] /*ttype*/, COLOR_MMTypeFormal, ID_MMTypeFormal)) /*cast MMTypeFormal*/;
+        /* Ensure var variable[7]: Left 'and' operand*/
+        if (UNTAG_Bool(variable[7])) { /* and */
+          /* Register variable[7]: Result */
+          variable[7] = CALL_type_formal___MMTypeFormal___bound( variable[6] /*ttype*/)( variable[6] /*ttype*/) /*MMTypeFormal::bound*/;
+          /* Register variable[7]: Result */
+          variable[7] = CALL_static_type___MMType___is_nullable(variable[7])(variable[7]) /*MMType::is_nullable*/;
+        }
+        /* Register variable[7]: Result */
+        if (UNTAG_Bool(variable[7])) { /*if*/
+        } else { /*if*/
+          /* Register variable[7]: Result */
+          variable[7] = TAG_Bool((variable[0]==NIT_NULL) || VAL_ISA(variable[0], COLOR_AIsaExpr, ID_AIsaExpr)) /*cast AIsaExpr*/;
+          if (UNTAG_Bool(variable[7])) { /*if*/
+            /* Register variable[7]: Once String constant */
+            if (once_value_344 != NIT_NULL) variable[7] = once_value_344;
+            else {
+              variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Warning: Prefer '!= null'."), TAG_Int(26)) /*new String*/;
+              once_value_344 = variable[7];
+            }
+            /* Register variable[7]: Result */
+            CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::warning*/;
+          } else { /*if*/
+            /* Register variable[7]: Once String constant */
+            if (once_value_345 != NIT_NULL) variable[7] = once_value_345;
+            else {
+              variable[7] = NEW_String_string___String___with_native(BOX_NativeString("Warning: Prefer '.as(not null)'."), TAG_Int(32)) /*new String*/;
+              once_value_345 = variable[7];
+            }
+            /* Register variable[7]: Result */
+            CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[7]) /*AbsSyntaxVisitor::warning*/;
+          }
+        }
+      }
+    }
+  }
+  return_label338: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
 void typing___AIsaExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AIsaExpr::after_typing (src/syntax//typing.nit:1131,2--1138:22)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-    val_t variable4;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AIsaExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIsaExpr___n_expr))( self) /*AIsaExpr::n_expr*/;
-  variable1 = ((typing___PExpr___is_variable_t)CALL(variable1,COLOR_typing___PExpr___is_variable))(variable1) /*PExpr::is_variable*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable2 = ((parser_nodes___AIsaExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AIsaExpr___n_expr))( self) /*AIsaExpr::n_expr*/;
-    variable1 = variable2;
-    variable2 = TAG_Bool(( variable1 /*n*/==NIT_NULL) || VAL_ISA( variable1 /*n*/, COLOR_AVarExpr, ID_AVarExpr)) /*cast AVarExpr*/;
-    if (!UNTAG_Bool(variable2)) { fprintf(stderr, "Assert failed: src/syntax//typing.nit:1135,4--24\n"); nit_exit(1);}
-    variable2 = ((typing___TypingVisitor___variable_ctx_t)CALL( variable0 /*v*/,COLOR_typing___TypingVisitor___variable_ctx))( variable0 /*v*/) /*TypingVisitor::variable_ctx*/;
-    variable3 = ((typing___AVarFormExpr___variable_t)CALL( variable1 /*n*/,COLOR_typing___AVarFormExpr___variable))( variable1 /*n*/) /*AVarExpr::variable*/;
-    variable4 = ((parser_nodes___AIsaExpr___n_type_t)CALL( self,COLOR_parser_nodes___AIsaExpr___n_type))( self) /*AIsaExpr::n_type*/;
-    variable4 = ((typing___PType___stype_t)CALL(variable4,COLOR_typing___PType___stype))(variable4) /*PType::stype*/;
-    variable2 = ((typing___VariableContext___sub_with_t)CALL(variable2,COLOR_typing___VariableContext___sub_with))(variable2, variable3, variable4) /*VariableContext::sub_with*/;
-    ATTR_typing___PExpr____if_true_variable_ctx( self) /*AIsaExpr::_if_true_variable_ctx*/ = variable2;
-  }
-  variable1 = ((syntax_base___AbsSyntaxVisitor___type_bool_t)CALL( variable0 /*v*/,COLOR_syntax_base___AbsSyntaxVisitor___type_bool))( variable0 /*v*/) /*TypingVisitor::type_bool*/;
-  ATTR_typing___PExpr____stype( self) /*AIsaExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 1612, LOCATE_typing___AIsaExpr___after_typing};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AIsaExpr___n_expr(variable[0])(variable[0]) /*AIsaExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIsaExpr___n_type(variable[0])(variable[0]) /*AIsaExpr::n_type*/;
+  CALL_typing___ATypeCheckExpr___check_expr_cast(variable[0])(variable[0],  variable[1] /*v*/, variable[3], variable[4]) /*ATypeCheckExpr::check_expr_cast*/;
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AIsaExpr___n_expr(variable[0])(variable[0]) /*AIsaExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_typing___PExpr___its_variable(variable[4])(variable[4]) /*PExpr::its_variable*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[3] /*variable*/ ==  NIT_NULL /*null*/) || (( variable[3] /*variable*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*variable*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*variable*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*variable*/)( variable[3] /*variable*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_typing___TypingVisitor___variable_ctx( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::variable_ctx*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_parser_nodes___AIsaExpr___n_type(variable[0])(variable[0]) /*AIsaExpr::n_type*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_typing___PType___stype(variable[5])(variable[5]) /*PType::stype*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_control_flow___VariableContext___sub_with(variable[4])(variable[4], variable[0],  variable[3] /*variable*/, variable[5]) /*VariableContext::sub_with*/;
+    ATTR_typing___PExpr____if_true_variable_ctx(variable[0]) /*PExpr::_if_true_variable_ctx*/ = variable[4];
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___AbsSyntaxVisitor___type_bool( variable[1] /*v*/)( variable[1] /*v*/) /*AbsSyntaxVisitor::type_bool*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label346: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AAsCastExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1626, LOCATE_typing___AAsCastExpr___after_typing};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAsCastExpr___n_expr(variable[0])(variable[0]) /*AAsCastExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAsCastExpr___n_type(variable[0])(variable[0]) /*AAsCastExpr::n_type*/;
+  CALL_typing___ATypeCheckExpr___check_expr_cast(variable[0])(variable[0],  variable[1] /*v*/, variable[3], variable[4]) /*ATypeCheckExpr::check_expr_cast*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAsCastExpr___n_type(variable[0])(variable[0]) /*AAsCastExpr::n_type*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___PType___stype(variable[3])(variable[3]) /*PType::stype*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ = variable[3];
+  return_label347: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AAsNotnullExpr___after_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1635, LOCATE_typing___AAsNotnullExpr___after_typing};
+    static val_t once_value_349 = NIT_NULL; /* Once value for string variable[5]*/
+      static val_t once_value_350 = NIT_NULL; /* Once value for string variable[5]*/
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AAsNotnullExpr___n_expr(variable[0])(variable[0]) /*AAsNotnullExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___AbsSyntaxVisitor___check_expr( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*AbsSyntaxVisitor::check_expr*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label348;
+  }
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAsNotnullExpr___n_expr(variable[0])(variable[0]) /*AAsNotnullExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*t*/==NIT_NULL) || VAL_ISA( variable[3] /*t*/, COLOR_MMTypeNone, ID_MMTypeNone)) /*cast MMTypeNone*/;
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_parser_nodes___AAsNotnullExpr___n_expr(variable[0])(variable[0]) /*AAsNotnullExpr::n_expr*/;
+    /* Register variable[5]: Once String constant */
+    if (once_value_349 != NIT_NULL) variable[5] = once_value_349;
+    else {
+      variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Type error: 'as(not null)' on 'null' value."), TAG_Int(43)) /*new String*/;
+      once_value_349 = variable[5];
+    }
+    /* Register variable[5]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___error( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::error*/;
+    goto return_label348;
+  } else { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_static_type___MMType___is_nullable( variable[3] /*t*/)( variable[3] /*t*/) /*MMType::is_nullable*/;
+    if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[4])))) { /*if*/
+      /* Register variable[4]: Result */
+      variable[4] = CALL_parser_nodes___AAsNotnullExpr___n_expr(variable[0])(variable[0]) /*AAsNotnullExpr::n_expr*/;
+      /* Register variable[5]: Once String constant */
+      if (once_value_350 != NIT_NULL) variable[5] = once_value_350;
+      else {
+        variable[5] = NEW_String_string___String___with_native(BOX_NativeString("Warning: 'as(not null)' on non nullable type."), TAG_Int(45)) /*new String*/;
+        once_value_350 = variable[5];
+      }
+      /* Register variable[5]: Result */
+      CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[4], variable[5]) /*AbsSyntaxVisitor::warning*/;
+    }
+  }
+  /* Register variable[4]: Result */
+  variable[4] = CALL_parser_nodes___AAsNotnullExpr___n_expr(variable[0])(variable[0]) /*AAsNotnullExpr::n_expr*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_syntax_base___PExpr___stype(variable[4])(variable[4]) /*PExpr::stype*/;
+  /* Register variable[4]: Result */
+  variable[4] = CALL_static_type___MMType___as_notnull(variable[4])(variable[4]) /*MMType::as_notnull*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[4];
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  return_label348: while(false);
   tracehead = trace.prev;
   return;
 }
 void typing___AProxyExpr___after_typing(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "typing::AProxyExpr::after_typing (src/syntax//typing.nit:1143,2--1145:23)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((parser_nodes___AProxyExpr___n_expr_t)CALL( self,COLOR_parser_nodes___AProxyExpr___n_expr))( self) /*AProxyExpr::n_expr*/;
-  variable1 = ((typing___PExpr___stype_t)CALL(variable1,COLOR_syntax_base___PExpr___stype))(variable1) /*PExpr::stype*/;
-  ATTR_typing___PExpr____stype( self) /*AProxyExpr::_stype*/ = variable1;
+  struct trace_t trace = {NULL, NULL, 1651, LOCATE_typing___AProxyExpr___after_typing};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AProxyExpr___n_expr(variable[0])(variable[0]) /*AProxyExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___is_typed(variable[3])(variable[3]) /*PExpr::is_typed*/;
+  if (UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[3])))) { /*if*/
+    goto return_label351;
+  }
+  ATTR_typing___PExpr____is_typed(variable[0]) /*PExpr::_is_typed*/ =  TAG_Bool(true);
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AProxyExpr___n_expr(variable[0])(variable[0]) /*AProxyExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___is_statement(variable[3])(variable[3]) /*PExpr::is_statement*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    goto return_label351;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_parser_nodes___AProxyExpr___n_expr(variable[0])(variable[0]) /*AProxyExpr::n_expr*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_syntax_base___PExpr___stype(variable[3])(variable[3]) /*PExpr::stype*/;
+  ATTR_typing___PExpr____stype(variable[0]) /*PExpr::_stype*/ = variable[3];
+  return_label351: while(false);
+  tracehead = trace.prev;
+  return;
+}
+void typing___AOnceExpr___accept_typing(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 1661, LOCATE_typing___AOnceExpr___accept_typing};
+    static val_t once_value_353 = NIT_NULL; /* Once value for string variable[3]*/
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_typing;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___once_count( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::once_count*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(UNTAG_Int(variable[3])>UNTAG_Int( TAG_Int(0)));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: Once String constant */
+    if (once_value_353 != NIT_NULL) variable[3] = once_value_353;
+    else {
+      variable[3] = NEW_String_string___String___with_native(BOX_NativeString("Useless once in a once expression."), TAG_Int(34)) /*new String*/;
+      once_value_353 = variable[3];
+    }
+    /* Register variable[3]: Result */
+    CALL_syntax_base___AbsSyntaxVisitor___warning( variable[1] /*v*/)( variable[1] /*v*/, variable[0], variable[3]) /*AbsSyntaxVisitor::warning*/;
+  }
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___once_count( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::once_count*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Int(UNTAG_Int(variable[3])+UNTAG_Int( TAG_Int(1)));
+  CALL_typing___TypingVisitor___once_count__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::once_count=*/;
+  CALL_SUPER_typing___AOnceExpr___accept_typing(variable[0])(variable[0], variable[1]) /*super AOnceExpr::accept_typing*/;
+  /* Register variable[3]: Result */
+  variable[3] = CALL_typing___TypingVisitor___once_count( variable[1] /*v*/)( variable[1] /*v*/) /*TypingVisitor::once_count*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Int(UNTAG_Int(variable[3])-UNTAG_Int( TAG_Int(1)));
+  CALL_typing___TypingVisitor___once_count__eq( variable[1] /*v*/)( variable[1] /*v*/, variable[3]) /*TypingVisitor::once_count=*/;
+  return_label352: while(false);
   tracehead = trace.prev;
   return;
 }