nitg: Modified compilation routine to avoid use of String contructors

[nit.git] / c_src / syntax___typing._sep.c

diff --git a/c_src/syntax___typing._sep.c b/c_src/syntax___typing._sep.c
index 36d3757..2c7e584 100644 (file)
--- a/c_src/syntax___typing._sep.c
+++ b/c_src/syntax___typing._sep.c
@@ -1,5 +1,6 @@
 /* This C file is generated by NIT to compile module syntax___typing. */
 #include "syntax___typing._sep.h"
+static const char LOCATE_syntax___typing___MMSrcModule___do_typing[] = "typing::MMSrcModule::do_typing";
 void syntax___typing___MMSrcModule___do_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -9,18 +10,20 @@ void syntax___typing___MMSrcModule___do_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___MMSrcModule___do_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:29 */
+  /* syntax/typing.nit:29 */
   fra.me.REG[1] = NEW_TypingVisitor_syntax___typing___TypingVisitor___init(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:30 */
+  /* syntax/typing.nit:30 */
   fra.me.REG[0] = CALL_syntax___syntax_base___MMSrcModule___node(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___visit[] = "typing::TypingVisitor::(parser_prod::Visitor::visit)";
 void syntax___typing___TypingVisitor___visit(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -32,17 +35,18 @@ void syntax___typing___TypingVisitor___visit(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___visit;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:43 */
+  /* syntax/typing.nit:43 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -60,6 +64,7 @@ void syntax___typing___TypingVisitor___visit(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___scope_ctx[] = "typing::TypingVisitor::scope_ctx";
 val_t syntax___typing___TypingVisitor___scope_ctx(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -70,9 +75,10 @@ val_t syntax___typing___TypingVisitor___scope_ctx(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___scope_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:46 */
+  /* syntax/typing.nit:46 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___TypingVisitor____scope_ctx(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -82,6 +88,7 @@ val_t syntax___typing___TypingVisitor___scope_ctx(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___flow_ctx[] = "typing::TypingVisitor::flow_ctx";
 val_t syntax___typing___TypingVisitor___flow_ctx(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -92,12 +99,13 @@ val_t syntax___typing___TypingVisitor___flow_ctx(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:49 */
+  /* syntax/typing.nit:49 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:50 */
+  /* syntax/typing.nit:50 */
   fra.me.REG[1] = ATTR_syntax___typing___TypingVisitor____flow_ctx(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
@@ -109,6 +117,7 @@ val_t syntax___typing___TypingVisitor___flow_ctx(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___flow_ctx__eq[] = "typing::TypingVisitor::flow_ctx=";
 void syntax___typing___TypingVisitor___flow_ctx__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -118,15 +127,17 @@ void syntax___typing___TypingVisitor___flow_ctx__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___flow_ctx__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:51 */
+  /* syntax/typing.nit:51 */
   ATTR_syntax___typing___TypingVisitor____flow_ctx(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___mark_is_set[] = "typing::TypingVisitor::mark_is_set";
 void syntax___typing___TypingVisitor___mark_is_set(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -137,18 +148,19 @@ void syntax___typing___TypingVisitor___mark_is_set(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___mark_is_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:56 */
+  /* syntax/typing.nit:56 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___flow___FlowContext___is_set(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:57 */
+  /* syntax/typing.nit:57 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[1] = CALL_syntax___flow___FlowContext___sub_setvariable(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
@@ -156,6 +168,7 @@ void syntax___typing___TypingVisitor___mark_is_set(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___mark_unreash[] = "typing::TypingVisitor::mark_unreash";
 void syntax___typing___TypingVisitor___mark_unreash(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t tmp;
@@ -165,18 +178,20 @@ void syntax___typing___TypingVisitor___mark_unreash(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___mark_unreash;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:63 */
+  /* syntax/typing.nit:63 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[1] = CALL_syntax___flow___FlowContext___sub_unreash(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___enter_visit_block[] = "typing::TypingVisitor::enter_visit_block";
 void syntax___typing___TypingVisitor___enter_visit_block(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -188,18 +203,19 @@ void syntax___typing___TypingVisitor___enter_visit_block(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___enter_visit_block;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:69 */
+  /* syntax/typing.nit:69 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -209,18 +225,19 @@ void syntax___typing___TypingVisitor___enter_visit_block(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:70 */
+  /* syntax/typing.nit:70 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___scope___ScopeContext___push(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ./syntax//typing.nit:71 */
+  /* syntax/typing.nit:71 */
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:72 */
+  /* syntax/typing.nit:72 */
   fra.me.REG[0] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[0])(fra.me.REG[0]);
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___base_flow_ctx[] = "typing::TypingVisitor::base_flow_ctx";
 val_t syntax___typing___TypingVisitor___base_flow_ctx(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -231,12 +248,13 @@ val_t syntax___typing___TypingVisitor___base_flow_ctx(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___base_flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:75 */
+  /* syntax/typing.nit:75 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:76 */
+  /* syntax/typing.nit:76 */
   fra.me.REG[1] = ATTR_syntax___typing___TypingVisitor____base_flow_ctx(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
@@ -248,6 +266,7 @@ val_t syntax___typing___TypingVisitor___base_flow_ctx(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___base_flow_ctx__eq[] = "typing::TypingVisitor::base_flow_ctx=";
 void syntax___typing___TypingVisitor___base_flow_ctx__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -257,15 +276,17 @@ void syntax___typing___TypingVisitor___base_flow_ctx__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___base_flow_ctx__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:77 */
+  /* syntax/typing.nit:77 */
   ATTR_syntax___typing___TypingVisitor____base_flow_ctx(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___self_var[] = "typing::TypingVisitor::self_var";
 val_t syntax___typing___TypingVisitor___self_var(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -276,12 +297,13 @@ val_t syntax___typing___TypingVisitor___self_var(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___self_var;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:79 */
+  /* syntax/typing.nit:79 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:80 */
+  /* syntax/typing.nit:80 */
   fra.me.REG[1] = ATTR_syntax___typing___TypingVisitor____self_var(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
@@ -293,6 +315,7 @@ val_t syntax___typing___TypingVisitor___self_var(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___self_var__eq[] = "typing::TypingVisitor::self_var=";
 void syntax___typing___TypingVisitor___self_var__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -302,15 +325,17 @@ void syntax___typing___TypingVisitor___self_var__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___self_var__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:81 */
+  /* syntax/typing.nit:81 */
   ATTR_syntax___typing___TypingVisitor____self_var(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___top_block[] = "typing::TypingVisitor::top_block";
 val_t syntax___typing___TypingVisitor___top_block(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
@@ -320,13 +345,15 @@ val_t syntax___typing___TypingVisitor___top_block(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___top_block;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:83 */
+  /* syntax/typing.nit:83 */
   fra.me.REG[0] = ATTR_syntax___typing___TypingVisitor____top_block(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___top_block__eq[] = "typing::TypingVisitor::top_block=";
 void syntax___typing___TypingVisitor___top_block__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -336,15 +363,17 @@ void syntax___typing___TypingVisitor___top_block__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___top_block__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:83 */
+  /* syntax/typing.nit:83 */
   ATTR_syntax___typing___TypingVisitor____top_block(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___explicit_super_init_calls[] = "typing::TypingVisitor::explicit_super_init_calls";
 val_t syntax___typing___TypingVisitor___explicit_super_init_calls(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
@@ -354,13 +383,15 @@ val_t syntax___typing___TypingVisitor___explicit_super_init_calls(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___explicit_super_init_calls;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:86 */
+  /* syntax/typing.nit:86 */
   fra.me.REG[0] = ATTR_syntax___typing___TypingVisitor____explicit_super_init_calls(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___TypingVisitor___explicit_super_init_calls__eq[] = "typing::TypingVisitor::explicit_super_init_calls=";
 void syntax___typing___TypingVisitor___explicit_super_init_calls__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -370,15 +401,17 @@ void syntax___typing___TypingVisitor___explicit_super_init_calls__eq(val_t p0, v
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___explicit_super_init_calls__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:86 */
+  /* syntax/typing.nit:86 */
   ATTR_syntax___typing___TypingVisitor____explicit_super_init_calls(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___explicit_other_init_call[] = "typing::TypingVisitor::explicit_other_init_call";
 val_t syntax___typing___TypingVisitor___explicit_other_init_call(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -389,9 +422,10 @@ val_t syntax___typing___TypingVisitor___explicit_other_init_call(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___explicit_other_init_call;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:89 */
+  /* syntax/typing.nit:89 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___TypingVisitor____explicit_other_init_call(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -401,6 +435,7 @@ val_t syntax___typing___TypingVisitor___explicit_other_init_call(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___explicit_other_init_call__eq[] = "typing::TypingVisitor::explicit_other_init_call=";
 void syntax___typing___TypingVisitor___explicit_other_init_call__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -411,14 +446,16 @@ void syntax___typing___TypingVisitor___explicit_other_init_call__eq(val_t p0, va
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___explicit_other_init_call__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./syntax//typing.nit:89 */
+  /* syntax/typing.nit:89 */
   ATTR_syntax___typing___TypingVisitor____explicit_other_init_call(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___use_if_true_flow_ctx[] = "typing::TypingVisitor::use_if_true_flow_ctx";
 void syntax___typing___TypingVisitor___use_if_true_flow_ctx(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -430,19 +467,20 @@ void syntax___typing___TypingVisitor___use_if_true_flow_ctx(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___use_if_true_flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:95 */
+  /* syntax/typing.nit:95 */
   fra.me.REG[1] = CALL_syntax___typing___AExpr___if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:96 */
+  /* syntax/typing.nit:96 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -456,6 +494,7 @@ void syntax___typing___TypingVisitor___use_if_true_flow_ctx(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___use_if_false_flow_ctx[] = "typing::TypingVisitor::use_if_false_flow_ctx";
 void syntax___typing___TypingVisitor___use_if_false_flow_ctx(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -467,19 +506,20 @@ void syntax___typing___TypingVisitor___use_if_false_flow_ctx(val_t p0, val_t p1)
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___use_if_false_flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:102 */
+  /* syntax/typing.nit:102 */
   fra.me.REG[1] = CALL_syntax___typing___AExpr___if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:103 */
+  /* syntax/typing.nit:103 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -493,6 +533,7 @@ void syntax___typing___TypingVisitor___use_if_false_flow_ctx(val_t p0, val_t p1)
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___is_default_closure_definition[] = "typing::TypingVisitor::is_default_closure_definition";
 val_t syntax___typing___TypingVisitor___is_default_closure_definition(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -503,9 +544,10 @@ val_t syntax___typing___TypingVisitor___is_default_closure_definition(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___is_default_closure_definition;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:106 */
+  /* syntax/typing.nit:106 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___TypingVisitor____is_default_closure_definition(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -515,6 +557,7 @@ val_t syntax___typing___TypingVisitor___is_default_closure_definition(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___is_default_closure_definition__eq[] = "typing::TypingVisitor::is_default_closure_definition=";
 void syntax___typing___TypingVisitor___is_default_closure_definition__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -525,14 +568,16 @@ void syntax___typing___TypingVisitor___is_default_closure_definition__eq(val_t p
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___is_default_closure_definition__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./syntax//typing.nit:106 */
+  /* syntax/typing.nit:106 */
   ATTR_syntax___typing___TypingVisitor____is_default_closure_definition(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___once_count[] = "typing::TypingVisitor::once_count";
 val_t syntax___typing___TypingVisitor___once_count(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -543,9 +588,10 @@ val_t syntax___typing___TypingVisitor___once_count(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___once_count;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:109 */
+  /* syntax/typing.nit:109 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___TypingVisitor____once_count(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -555,6 +601,7 @@ val_t syntax___typing___TypingVisitor___once_count(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___once_count__eq[] = "typing::TypingVisitor::once_count=";
 void syntax___typing___TypingVisitor___once_count__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -565,14 +612,16 @@ void syntax___typing___TypingVisitor___once_count__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___once_count__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./syntax//typing.nit:109 */
+  /* syntax/typing.nit:109 */
   ATTR_syntax___typing___TypingVisitor____once_count(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___init[] = "typing::TypingVisitor::init";
 void syntax___typing___TypingVisitor___init(val_t p0, val_t p1, val_t p2, int* init_table){
   int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___typing___TypingVisitor].i;
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
@@ -584,18 +633,20 @@ void syntax___typing___TypingVisitor___init(val_t p0, val_t p1, val_t p2, int* i
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:112 */
+  /* syntax/typing.nit:112 */
   CALL_syntax___syntax_base___AbsSyntaxVisitor___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], init_table);
   stack_frame_head = fra.me.prev;
   init_table[itpos0] = 1;
   return;
 }
+static const char LOCATE_syntax___typing___TypingVisitor___get_default_constructor_for[] = "typing::TypingVisitor::get_default_constructor_for";
 val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, val_t p1, val_t p2, val_t p3){
   struct {struct stack_frame_t me; val_t MORE_REG[11];} fra;
   val_t REGB0;
@@ -624,6 +675,7 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
   fra.me.meth = LOCATE_syntax___typing___TypingVisitor___get_default_constructor_for;
   fra.me.has_broke = 0;
   fra.me.REG_size = 12;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -640,15 +692,15 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./syntax//typing.nit:114 */
+  /* syntax/typing.nit:114 */
   fra.me.REG[4] = fra.me.REG[0];
-  /* ./syntax//typing.nit:116 */
+  /* syntax/typing.nit:116 */
   fra.me.REG[5] = fra.me.REG[4];
-  /* ./syntax//typing.nit:119 */
+  /* syntax/typing.nit:119 */
   fra.me.REG[6] = NEW_Array_standard___collection___array___Array___init();
-  /* ./syntax//typing.nit:120 */
+  /* syntax/typing.nit:120 */
   fra.me.REG[7] = NEW_Array_standard___collection___array___Array___init();
-  /* ./syntax//typing.nit:121 */
+  /* syntax/typing.nit:121 */
   fra.me.REG[8] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
@@ -656,74 +708,74 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
   }
   REGB0 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[8])(fra.me.REG[8]);
   fra.me.REG[8] = REGB0;
-  /* ./syntax//typing.nit:122 */
+  /* syntax/typing.nit:122 */
   fra.me.REG[9] = CALL_metamodel___abstractmetamodel___MMLocalClass___global_properties(fra.me.REG[2])(fra.me.REG[2]);
   CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[9])(fra.me.REG[9], (&(fra.me)), ((fun_t)OC_syntax___typing___TypingVisitor___get_default_constructor_for_1));
   switch ((&(fra.me))->has_broke) {
     case 0: break;
     case 1: (&(fra.me))->has_broke = 0; goto label5;
   }
-  /* ./../lib/standard//collection//array.nit:23 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-  /* ./syntax//typing.nit:141 */
+  /* syntax/typing.nit:141 */
   REGB1 = TAG_Int(1);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./syntax//typing.nit:141 */
+    /* syntax/typing.nit:141 */
     REGB2 = REGB1;
   }
   if (UNTAG_Bool(REGB2)) {
-    /* ./syntax//typing.nit:142 */
+    /* syntax/typing.nit:142 */
     fra.me.REG[3] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[6])(fra.me.REG[6]);
     fra.me.REG[9] = fra.me.REG[3];
     goto label5;
   } else {
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-    /* ./syntax//typing.nit:143 */
+    /* syntax/typing.nit:143 */
     REGB1 = TAG_Int(0);
     REGB0 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB0)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:217 */
+    /* ../lib/standard/kernel.nit:237 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB2)>UNTAG_Int(REGB1));
-    /* ./syntax//typing.nit:143 */
+    /* syntax/typing.nit:143 */
     if (UNTAG_Bool(REGB1)) {
-      /* ./syntax//typing.nit:144 */
+      /* syntax/typing.nit:144 */
       fra.me.REG[3] = NEW_Array_standard___collection___array___Array___init();
-      /* ./../lib/standard//collection//array.nit:232 */
+      /* ../lib/standard/collection/array.nit:269 */
       REGB1 = TAG_Int(0);
-      /* ./../lib/standard//collection//array.nit:233 */
+      /* ../lib/standard/collection/array.nit:270 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-      /* ./../lib/standard//collection//array.nit:234 */
+      /* ../lib/standard/collection/array.nit:271 */
       fra.me.REG[8] = ATTR_standard___collection___array___Array____items(fra.me.REG[6]);
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       while(1) {
-        /* ./../lib/standard//collection//array.nit:23 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
         }
         REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
         REGB0 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -731,18 +783,18 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:215 */
+        /* ../lib/standard/kernel.nit:235 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         if (UNTAG_Bool(REGB2)) {
-          /* ./../lib/standard//collection//array.nit:236 */
+          /* ../lib/standard/collection/array.nit:273 */
           REGB2 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
           }
-          /* ./../lib/standard//collection//array.nit:652 */
+          /* ../lib/standard/collection/array.nit:724 */
           fra.me.REG[4] = ((Nit_NativeArray)fra.me.REG[8])->val[UNTAG_Int(REGB1)];
-          /* ./syntax//typing.nit:146 */
+          /* syntax/typing.nit:146 */
           REGB2 = TAG_Int(5);
           fra.me.REG[10] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
           if (!once_value_6) {
@@ -784,19 +836,19 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
           CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[10])(fra.me.REG[10], fra.me.REG[4]);
           fra.me.REG[10] = CALL_standard___string___Object___to_s(fra.me.REG[10])(fra.me.REG[10]);
           CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[10]);
-          /* ./../lib/standard//collection//array.nit:237 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB2 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:218 */
+          /* ../lib/standard/kernel.nit:238 */
           REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-          /* ./../lib/standard//collection//array.nit:237 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB1 = REGB2;
         } else {
-          /* ./../lib/standard//collection//array.nit:235 */
+          /* ../lib/standard/collection/array.nit:272 */
           goto label9;
         }
       }
       label9: while(0);
-      /* ./syntax//typing.nit:148 */
+      /* syntax/typing.nit:148 */
       REGB1 = TAG_Int(5);
       fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
       if (!once_value_10) {
@@ -840,48 +892,48 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[6]);
       fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1], fra.me.REG[8]);
-      /* ./syntax//typing.nit:149 */
+      /* syntax/typing.nit:149 */
       fra.me.REG[9] = NIT_NULL;
       goto label5;
     } else {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-      /* ./syntax//typing.nit:150 */
+      /* syntax/typing.nit:150 */
       REGB2 = TAG_Int(0);
       REGB0 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB0)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:217 */
+      /* ../lib/standard/kernel.nit:237 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-      /* ./syntax//typing.nit:150 */
+      /* syntax/typing.nit:150 */
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//typing.nit:151 */
+        /* syntax/typing.nit:151 */
         fra.me.REG[8] = NEW_Array_standard___collection___array___Array___init();
-        /* ./../lib/standard//collection//array.nit:232 */
+        /* ../lib/standard/collection/array.nit:269 */
         REGB2 = TAG_Int(0);
-        /* ./../lib/standard//collection//array.nit:233 */
+        /* ../lib/standard/collection/array.nit:270 */
         REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
         }
         REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-        /* ./../lib/standard//collection//array.nit:234 */
+        /* ../lib/standard/collection/array.nit:271 */
         fra.me.REG[6] = ATTR_standard___collection___array___Array____items(fra.me.REG[7]);
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         while(1) {
-          /* ./../lib/standard//collection//array.nit:23 */
+          /* ../lib/standard/collection/array.nit:24 */
           REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
           } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
           }
           REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
           REGB0 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -889,18 +941,18 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:215 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB1 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB1));
-          /* ./../lib/standard//collection//array.nit:235 */
+          /* ../lib/standard/collection/array.nit:272 */
           if (UNTAG_Bool(REGB1)) {
-            /* ./../lib/standard//collection//array.nit:236 */
+            /* ../lib/standard/collection/array.nit:273 */
             REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
             if (UNTAG_Bool(REGB1)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
             }
-            /* ./../lib/standard//collection//array.nit:652 */
+            /* ../lib/standard/collection/array.nit:724 */
             fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[6])->val[UNTAG_Int(REGB2)];
-            /* ./syntax//typing.nit:153 */
+            /* syntax/typing.nit:153 */
             REGB1 = TAG_Int(5);
             fra.me.REG[10] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
             if (!once_value_14) {
@@ -942,19 +994,19 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
             CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[10])(fra.me.REG[10], fra.me.REG[3]);
             fra.me.REG[10] = CALL_standard___string___Object___to_s(fra.me.REG[10])(fra.me.REG[10]);
             CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[10]);
-            /* ./../lib/standard//collection//array.nit:237 */
+            /* ../lib/standard/collection/array.nit:274 */
             REGB1 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB1 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB1));
-            /* ./../lib/standard//collection//array.nit:237 */
+            /* ../lib/standard/collection/array.nit:274 */
             REGB2 = REGB1;
           } else {
-            /* ./../lib/standard//collection//array.nit:235 */
+            /* ../lib/standard/collection/array.nit:272 */
             goto label17;
           }
         }
         label17: while(0);
-        /* ./syntax//typing.nit:155 */
+        /* syntax/typing.nit:155 */
         REGB2 = TAG_Int(5);
         fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
         if (!once_value_18) {
@@ -998,11 +1050,11 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[6]);
         fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1], fra.me.REG[0]);
-        /* ./syntax//typing.nit:156 */
+        /* syntax/typing.nit:156 */
         fra.me.REG[9] = NIT_NULL;
         goto label5;
       } else {
-        /* ./syntax//typing.nit:158 */
+        /* syntax/typing.nit:158 */
         REGB2 = TAG_Int(3);
         fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
         if (!once_value_22) {
@@ -1027,7 +1079,7 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
         fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1], fra.me.REG[0]);
-        /* ./syntax//typing.nit:159 */
+        /* syntax/typing.nit:159 */
         fra.me.REG[9] = NIT_NULL;
         goto label5;
       }
@@ -1053,6 +1105,7 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
     fra.me.meth = LOCATE_syntax___typing___TypingVisitor___get_default_constructor_for;
     fra.me.has_broke = 0;
     fra.me.REG_size = 4;
+    fra.me.nitni_local_ref_head = NULL;
     fra.me.REG[0] = NIT_NULL;
     fra.me.REG[1] = NIT_NULL;
     fra.me.REG[2] = NIT_NULL;
@@ -1061,26 +1114,26 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
     fra.me.closure_funs = CREG;
     fra.me.REG[0] = p0;
     CREG[0] = clos_fun0;
-    /* ./syntax//typing.nit:123 */
+    /* syntax/typing.nit:123 */
     REGB0 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init_for(fra.me.REG[0])(fra.me.REG[0], closctx->REG[2]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
       goto label2;
     }
-    /* ./syntax//typing.nit:124 */
+    /* syntax/typing.nit:124 */
     fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalClass_____bra(closctx->REG[2])(closctx->REG[2], fra.me.REG[0]);
-    /* ./syntax//typing.nit:125 */
+    /* syntax/typing.nit:125 */
     fra.me.REG[1] = CALL_metamodel___static_type___MMLocalClass___get_type(closctx->REG[2])(closctx->REG[2]);
     fra.me.REG[1] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    /* ./syntax//typing.nit:126 */
+    /* syntax/typing.nit:126 */
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[0], COLOR_syntax___syntax_base___MMSrcMethod, ID_syntax___syntax_base___MMSrcMethod)) /*cast MMSrcMethod*/;
     if (UNTAG_Bool(REGB0)) {
     } else {
       nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 126);
     }
-    /* ./syntax//typing.nit:127 */
+    /* syntax/typing.nit:127 */
     REGB0 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[1])(fra.me.REG[1]);
-    /* ./syntax//typing.nit:128 */
+    /* syntax/typing.nit:128 */
     fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(closctx->REG[3])(closctx->REG[3]);
     REGB1 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
@@ -1090,25 +1143,25 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
-      /* ./syntax//typing.nit:129 */
+      /* syntax/typing.nit:129 */
       REGB1 = TAG_Int(0);
       REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
       if (UNTAG_Bool(REGB2)) {
       } else {
-        /* ./../lib/standard//kernel.nit:210 */
+        /* ../lib/standard/kernel.nit:230 */
         REGB1 = TAG_Bool((REGB0)==(REGB1));
-        /* ./syntax//typing.nit:129 */
+        /* syntax/typing.nit:129 */
         REGB2 = REGB1;
       }
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(true);
+        REGB2 = TAG_Bool(1);
       } else {
         REGB1 = TAG_Bool(IS_EQUAL_OO(closctx->REG[8],REGB0));
         if (UNTAG_Bool(REGB1)) {
         } else {
-          /* ./../lib/standard//kernel.nit:210 */
+          /* ../lib/standard/kernel.nit:230 */
           REGB3 = TAG_Bool((closctx->REG[8])==(REGB0));
-          /* ./syntax//typing.nit:129 */
+          /* syntax/typing.nit:129 */
           REGB1 = REGB3;
         }
         if (UNTAG_Bool(REGB1)) {
@@ -1119,29 +1172,29 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
           }
           REGB1 = CALL_metamodel___static_type___MMSignature_____l(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
         } else {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB1 = REGB3;
         }
         REGB2 = REGB1;
       }
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//typing.nit:130 */
+        /* syntax/typing.nit:130 */
         closctx->REG[9] = fra.me.REG[0];
         closctx->has_broke = 1;
         goto label2;
       } else {
-        /* ./syntax//typing.nit:132 */
+        /* syntax/typing.nit:132 */
         CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[7])(closctx->REG[7], fra.me.REG[0]);
       }
     } else {
-      /* ./syntax//typing.nit:134 */
+      /* syntax/typing.nit:134 */
       REGB2 = TAG_Int(0);
       REGB1 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB2));
       if (UNTAG_Bool(REGB1)) {
       } else {
-        /* ./../lib/standard//kernel.nit:210 */
+        /* ../lib/standard/kernel.nit:230 */
         REGB2 = TAG_Bool((REGB0)==(REGB2));
-        /* ./syntax//typing.nit:134 */
+        /* syntax/typing.nit:134 */
         REGB1 = REGB2;
       }
       if (UNTAG_Bool(REGB1)) {
@@ -1155,7 +1208,7 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
             register_static_object(&once_value_4);
           } else fra.me.REG[3] = once_value_4;
           fra.me.REG[3] = fra.me.REG[3];
-          fra.me.REG[3] = CALL_standard___symbol___String___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
+          fra.me.REG[3] = CALL_symbol___String___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
           once_value_3 = fra.me.REG[3];
           register_static_object(&once_value_3);
         } else fra.me.REG[3] = once_value_3;
@@ -1167,16 +1220,16 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
           REGB1 = REGB2;
         }
       } else {
-        REGB2 = TAG_Bool(false);
+        REGB2 = TAG_Bool(0);
         REGB1 = REGB2;
       }
       if (UNTAG_Bool(REGB1)) {
-        /* ./syntax//typing.nit:135 */
+        /* syntax/typing.nit:135 */
         CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[6])(closctx->REG[6], fra.me.REG[0]);
-        /* ./syntax//typing.nit:136 */
+        /* syntax/typing.nit:136 */
         CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[7])(closctx->REG[7], fra.me.REG[0]);
       } else {
-        /* ./syntax//typing.nit:138 */
+        /* syntax/typing.nit:138 */
         CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[7])(closctx->REG[7], fra.me.REG[0]);
       }
     }
@@ -1184,6 +1237,7 @@ val_t syntax___typing___TypingVisitor___get_default_constructor_for(val_t p0, va
     stack_frame_head = fra.me.prev;
     return;
   }
+static const char LOCATE_syntax___typing___ANode___accept_typing[] = "typing::ANode::accept_typing";
 void syntax___typing___ANode___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -1193,17 +1247,19 @@ void syntax___typing___ANode___accept_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___ANode___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:170 */
+  /* syntax/typing.nit:170 */
   CALL_syntax___syntax_base___ANode___accept_abs_syntax_visitor(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:171 */
+  /* syntax/typing.nit:171 */
   CALL_syntax___typing___ANode___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ANode___after_typing[] = "typing::ANode::after_typing";
 void syntax___typing___ANode___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -1213,6 +1269,7 @@ void syntax___typing___ANode___after_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___ANode___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
@@ -1220,6 +1277,7 @@ void syntax___typing___ANode___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AClassdef___accept_typing[] = "typing::AClassdef::(typing::ANode::accept_typing)";
 void syntax___typing___AClassdef___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -1231,6 +1289,7 @@ void syntax___typing___AClassdef___accept_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AClassdef___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1238,10 +1297,10 @@ void syntax___typing___AClassdef___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:177 */
+  /* syntax/typing.nit:177 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:179 */
+  /* syntax/typing.nit:179 */
   if (!once_value_1) {
     fra.me.REG[4] = BOX_NativeString("self");
     REGB0 = TAG_Int(4);
@@ -1250,19 +1309,20 @@ void syntax___typing___AClassdef___accept_typing(val_t p0, val_t p1){
     register_static_object(&once_value_1);
   } else fra.me.REG[4] = once_value_1;
   fra.me.REG[4] = fra.me.REG[4];
-  fra.me.REG[4] = CALL_standard___symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
+  fra.me.REG[4] = CALL_symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = NEW_ParamVariable_syntax___syntax_base___ParamVariable___init(fra.me.REG[4], fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___self_var__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:180 */
+  /* syntax/typing.nit:180 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AClassdef___local_class(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[2] = CALL_metamodel___static_type___MMLocalClass___get_type(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* ./syntax//typing.nit:181 */
+  /* syntax/typing.nit:181 */
   CALL_SUPER_syntax___typing___AClassdef___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___APropdef___self_var[] = "typing::APropdef::(syntax_base::APropdef::self_var)";
 val_t syntax___typing___APropdef___self_var(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1273,10 +1333,11 @@ val_t syntax___typing___APropdef___self_var(val_t p0){
   fra.me.meth = LOCATE_syntax___typing___APropdef___self_var;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:186 */
+  /* syntax/typing.nit:186 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___APropdef____self_var(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
@@ -1289,6 +1350,7 @@ val_t syntax___typing___APropdef___self_var(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAttrPropdef___accept_typing[] = "typing::AAttrPropdef::(typing::ANode::accept_typing)";
 void syntax___typing___AAttrPropdef___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -1300,6 +1362,7 @@ void syntax___typing___AAttrPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AAttrPropdef___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1307,31 +1370,31 @@ void syntax___typing___AAttrPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:191 */
+  /* syntax/typing.nit:191 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:193 */
+  /* syntax/typing.nit:193 */
   fra.me.REG[4] = NEW_RootFlowContext_syntax___flow___RootFlowContext___init(fra.me.REG[3], fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:194 */
+  /* syntax/typing.nit:194 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:196 */
+  /* syntax/typing.nit:196 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___push(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  /* ./syntax//typing.nit:197 */
+  /* syntax/typing.nit:197 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[3])(fra.me.REG[3]);
   ATTR_syntax___typing___APropdef____self_var(fra.me.REG[2]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:198 */
+  /* syntax/typing.nit:198 */
   CALL_SUPER_syntax___typing___AAttrPropdef___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:199 */
+  /* syntax/typing.nit:199 */
   fra.me.REG[1] = CALL_parser___parser_nodes___AAttrPropdef___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -1340,7 +1403,7 @@ void syntax___typing___AAttrPropdef___accept_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:200 */
+    /* syntax/typing.nit:200 */
     fra.me.REG[1] = CALL_parser___parser_nodes___AAttrPropdef___n_expr(fra.me.REG[2])(fra.me.REG[2]);
     REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_parser___parser_nodes___AExpr, ID_parser___parser_nodes___AExpr)) /*cast AExpr*/;
     if (UNTAG_Bool(REGB0)) {
@@ -1361,12 +1424,13 @@ void syntax___typing___AAttrPropdef___accept_typing(val_t p0, val_t p1){
     }
     CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], fra.me.REG[2]);
   }
-  /* ./syntax//typing.nit:202 */
+  /* syntax/typing.nit:202 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[3])(fra.me.REG[3]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AMethPropdef___accept_typing[] = "typing::AMethPropdef::(typing::ANode::accept_typing)";
 void syntax___typing___AMethPropdef___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t tmp;
@@ -1376,6 +1440,7 @@ void syntax___typing___AMethPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AMethPropdef___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1383,29 +1448,30 @@ void syntax___typing___AMethPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:207 */
+  /* syntax/typing.nit:207 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:209 */
+  /* syntax/typing.nit:209 */
   fra.me.REG[4] = NEW_RootFlowContext_syntax___flow___RootFlowContext___init(fra.me.REG[3], fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:210 */
+  /* syntax/typing.nit:210 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:212 */
+  /* syntax/typing.nit:212 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___push(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  /* ./syntax//typing.nit:213 */
+  /* syntax/typing.nit:213 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[3])(fra.me.REG[3]);
   ATTR_syntax___typing___APropdef____self_var(fra.me.REG[2]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:214 */
+  /* syntax/typing.nit:214 */
   CALL_SUPER_syntax___typing___AMethPropdef___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:215 */
+  /* syntax/typing.nit:215 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[3])(fra.me.REG[3]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AConcreteMethPropdef___after_typing[] = "typing::AConcreteMethPropdef::(typing::ANode::after_typing)";
 void syntax___typing___AConcreteMethPropdef___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -1418,18 +1484,19 @@ void syntax___typing___AConcreteMethPropdef___after_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AConcreteMethPropdef___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:220 */
+  /* syntax/typing.nit:220 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:222 */
+  /* syntax/typing.nit:222 */
   CALL_SUPER_syntax___typing___AConcreteMethPropdef___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:223 */
+  /* syntax/typing.nit:223 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
@@ -1446,7 +1513,7 @@ void syntax___typing___AConcreteMethPropdef___after_typing(val_t p0, val_t p1){
     } else {
       REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -1455,11 +1522,11 @@ void syntax___typing___AConcreteMethPropdef___after_typing(val_t p0, val_t p1){
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:224 */
+    /* syntax/typing.nit:224 */
     if (!once_value_1) {
       fra.me.REG[1] = BOX_NativeString("Control error: Reached end of function (a 'return' with a value was expected).");
       REGB0 = TAG_Int(78);
@@ -1473,6 +1540,7 @@ void syntax___typing___AConcreteMethPropdef___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AConcreteInitPropdef___accept_typing[] = "typing::AConcreteInitPropdef::(typing::ANode::accept_typing)";
 void syntax___typing___AConcreteInitPropdef___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -1483,6 +1551,7 @@ void syntax___typing___AConcreteInitPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AConcreteInitPropdef___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1490,23 +1559,24 @@ void syntax___typing___AConcreteInitPropdef___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:230 */
+  /* syntax/typing.nit:230 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:232 */
+  /* syntax/typing.nit:232 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AConcreteMethPropdef___n_block(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___top_block__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:233 */
+  /* syntax/typing.nit:233 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AConcreteInitPropdef___explicit_super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___explicit_super_init_calls__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* ./syntax//typing.nit:234 */
-  REGB0 = TAG_Bool(false);
+  /* syntax/typing.nit:234 */
+  REGB0 = TAG_Bool(0);
   CALL_syntax___typing___TypingVisitor___explicit_other_init_call__eq(fra.me.REG[3])(fra.me.REG[3], REGB0);
-  /* ./syntax//typing.nit:235 */
+  /* syntax/typing.nit:235 */
   CALL_SUPER_syntax___typing___AConcreteInitPropdef___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AConcreteInitPropdef___after_typing[] = "typing::AConcreteInitPropdef::(typing::ANode::after_typing)";
 void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
   val_t REGB0;
@@ -1522,6 +1592,7 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___typing___AConcreteInitPropdef___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1532,15 +1603,15 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
   fra.me.REG[7] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:238 */
+  /* syntax/typing.nit:238 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:240 */
+  /* syntax/typing.nit:240 */
   CALL_SUPER_syntax___typing___AConcreteInitPropdef___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:241 */
+  /* syntax/typing.nit:241 */
   REGB0 = CALL_syntax___typing___TypingVisitor___explicit_other_init_call(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     fra.me.REG[1] = CALL_syntax___syntax_base___AMethPropdef___method(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[1])(fra.me.REG[1]);
@@ -1557,49 +1628,49 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
   }
   if (UNTAG_Bool(REGB0)) {
   } else {
-    /* ./syntax//typing.nit:244 */
+    /* syntax/typing.nit:244 */
     REGB0 = TAG_Int(0);
-    /* ./syntax//typing.nit:245 */
+    /* syntax/typing.nit:245 */
     fra.me.REG[4] = CALL_syntax___syntax_base___AConcreteInitPropdef___explicit_super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-    /* ./syntax//typing.nit:246 */
+    /* syntax/typing.nit:246 */
     fra.me.REG[4] = NIT_NULL;
-    /* ./syntax//typing.nit:247 */
+    /* syntax/typing.nit:247 */
     fra.me.REG[1] = NIT_NULL;
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ./syntax//typing.nit:248 */
+    /* syntax/typing.nit:248 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./syntax//typing.nit:249 */
+      /* syntax/typing.nit:249 */
       fra.me.REG[5] = CALL_syntax___syntax_base___AConcreteInitPropdef___explicit_super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
-      /* ./../lib/standard//collection//array.nit:241 */
+      /* ../lib/standard/collection/array.nit:278 */
       REGB2 = REGB0;
-      /* ./../lib/standard//collection//array.nit:243 */
+      /* ../lib/standard/collection/array.nit:280 */
       REGB3 = TAG_Int(0);
       REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB4)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:216 */
+      /* ../lib/standard/kernel.nit:236 */
       REGB3 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB3));
-      /* ./../lib/standard//collection//array.nit:243 */
+      /* ../lib/standard/collection/array.nit:280 */
       if (UNTAG_Bool(REGB3)) {
         REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
         }
         REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
         REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -1607,31 +1678,31 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:215 */
+        /* ../lib/standard/kernel.nit:235 */
         REGB3 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB3));
       } else {
-        /* ./../lib/standard//collection//array.nit:243 */
-        REGB4 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:280 */
+        REGB4 = TAG_Bool(0);
         REGB3 = REGB4;
       }
       if (UNTAG_Bool(REGB3)) {
       } else {
-        nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
       }
-      /* ./../lib/standard//collection//array.nit:244 */
+      /* ../lib/standard/collection/array.nit:281 */
       fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[5]);
       REGB3 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
       }
-      /* ./../lib/standard//collection//array.nit:652 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB2)];
-      /* ./../lib/standard//collection//array.nit:244 */
+      /* ../lib/standard/collection/array.nit:281 */
       goto label1;
       label1: while(0);
-      /* ./syntax//typing.nit:249 */
+      /* syntax/typing.nit:249 */
       fra.me.REG[4] = fra.me.REG[5];
-      /* ./syntax//typing.nit:250 */
+      /* syntax/typing.nit:250 */
       REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
         nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 250);
@@ -1643,18 +1714,18 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
       fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalClass___for_module(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
       fra.me.REG[1] = fra.me.REG[6];
     }
-    /* ./syntax//typing.nit:252 */
+    /* syntax/typing.nit:252 */
     REGB2 = TAG_Int(0);
-    /* ./syntax//typing.nit:253 */
+    /* syntax/typing.nit:253 */
     while(1) {
       fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[3])(fra.me.REG[3]);
       fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalClass___cshe(fra.me.REG[6])(fra.me.REG[6]);
       fra.me.REG[6] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[6])(fra.me.REG[6]);
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
       REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -1662,31 +1733,31 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB3 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB3));
-      /* ./syntax//typing.nit:253 */
+      /* syntax/typing.nit:253 */
       if (UNTAG_Bool(REGB3)) {
-        /* ./syntax//typing.nit:254 */
+        /* syntax/typing.nit:254 */
         fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[3])(fra.me.REG[3]);
         fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalClass___cshe(fra.me.REG[6])(fra.me.REG[6]);
         fra.me.REG[6] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[6])(fra.me.REG[6]);
-        /* ./../lib/standard//collection//array.nit:241 */
+        /* ../lib/standard/collection/array.nit:278 */
         REGB3 = REGB2;
-        /* ./../lib/standard//collection//array.nit:243 */
+        /* ../lib/standard/collection/array.nit:280 */
         REGB4 = TAG_Int(0);
         REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB5)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:216 */
+        /* ../lib/standard/kernel.nit:236 */
         REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-        /* ./../lib/standard//collection//array.nit:243 */
+        /* ../lib/standard/collection/array.nit:280 */
         if (UNTAG_Bool(REGB4)) {
           REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
           if (UNTAG_Bool(REGB4)) {
           } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
           }
           REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
           REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -1694,60 +1765,67 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:215 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
         } else {
-          /* ./../lib/standard//collection//array.nit:243 */
-          REGB5 = TAG_Bool(false);
+          /* ../lib/standard/collection/array.nit:280 */
+          REGB5 = TAG_Bool(0);
           REGB4 = REGB5;
         }
         if (UNTAG_Bool(REGB4)) {
         } else {
-          nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+          nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
         }
-        /* ./../lib/standard//collection//array.nit:244 */
+        /* ../lib/standard/collection/array.nit:281 */
         fra.me.REG[6] = ATTR_standard___collection___array___Array____items(fra.me.REG[6]);
         REGB4 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[6] = ((Nit_NativeArray)fra.me.REG[6])->val[UNTAG_Int(REGB3)];
-        /* ./../lib/standard//collection//array.nit:244 */
+        /* ../lib/standard/collection/array.nit:281 */
         goto label2;
         label2: while(0);
-        /* ./syntax//typing.nit:255 */
+        /* syntax/typing.nit:255 */
         fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[6])(fra.me.REG[6]);
         REGB3 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_interface(fra.me.REG[5])(fra.me.REG[5]);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(true);
+          REGB3 = TAG_Bool(1);
         } else {
           fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[6])(fra.me.REG[6]);
           REGB4 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_enum(fra.me.REG[5])(fra.me.REG[5]);
           REGB3 = REGB4;
         }
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(true);
+          REGB3 = TAG_Bool(1);
+        } else {
+          fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[6])(fra.me.REG[6]);
+          REGB4 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_extern(fra.me.REG[5])(fra.me.REG[5]);
+          REGB3 = REGB4;
+        }
+        if (UNTAG_Bool(REGB3)) {
+          REGB3 = TAG_Bool(1);
         } else {
           fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[6])(fra.me.REG[6]);
           REGB4 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_mixin(fra.me.REG[5])(fra.me.REG[5]);
           REGB3 = REGB4;
         }
         if (UNTAG_Bool(REGB3)) {
-          /* ./syntax//typing.nit:256 */
+          /* syntax/typing.nit:256 */
           REGB3 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:218 */
+          /* ../lib/standard/kernel.nit:238 */
           REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-          /* ./syntax//typing.nit:256 */
+          /* syntax/typing.nit:256 */
           REGB2 = REGB3;
         } else {
-          /* ./syntax//typing.nit:257 */
+          /* syntax/typing.nit:257 */
           REGB3 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
           if (UNTAG_Bool(REGB3)) {
           } else {
             REGB4 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
             if (UNTAG_Bool(REGB4)) {
-              REGB4 = TAG_Bool(false);
+              REGB4 = TAG_Bool(0);
               REGB3 = REGB4;
             } else {
               REGB4 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -1759,7 +1837,7 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
             fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___cshe(fra.me.REG[6])(fra.me.REG[6]);
             REGB3 = CALL_metamodel___partial_order___PartialOrderElement_____leq(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
             if (UNTAG_Bool(REGB3)) {
-              REGB3 = TAG_Bool(true);
+              REGB3 = TAG_Bool(1);
             } else {
               REGB4 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
@@ -1770,11 +1848,11 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
               REGB3 = REGB4;
             }
           } else {
-            REGB4 = TAG_Bool(false);
+            REGB4 = TAG_Bool(0);
             REGB3 = REGB4;
           }
           if (UNTAG_Bool(REGB3)) {
-            /* ./syntax//typing.nit:258 */
+            /* syntax/typing.nit:258 */
             REGB3 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[6],fra.me.REG[1]));
             if (UNTAG_Bool(REGB3)) {
             } else {
@@ -1783,12 +1861,12 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
             }
             if (UNTAG_Bool(REGB3)) {
               REGB3 = TAG_Int(1);
-              /* ./../lib/standard//kernel.nit:218 */
+              /* ../lib/standard/kernel.nit:238 */
               REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-              /* ./syntax//typing.nit:258 */
+              /* syntax/typing.nit:258 */
               REGB2 = REGB3;
             }
-            /* ./syntax//typing.nit:259 */
+            /* syntax/typing.nit:259 */
             fra.me.REG[5] = CALL_syntax___syntax_base___AConcreteInitPropdef___super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
             REGB3 = TAG_Bool(fra.me.REG[4]!=NIT_NULL);
             if (UNTAG_Bool(REGB3)) {
@@ -1796,40 +1874,40 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
               nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 259);
             }
             CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-            /* ./syntax//typing.nit:260 */
+            /* syntax/typing.nit:260 */
             REGB3 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB3 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB3));
-            /* ./syntax//typing.nit:260 */
+            /* syntax/typing.nit:260 */
             REGB0 = REGB3;
             REGB3 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB3)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ./../lib/standard//kernel.nit:215 */
+            /* ../lib/standard/kernel.nit:235 */
             REGB3 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-            /* ./syntax//typing.nit:261 */
+            /* syntax/typing.nit:261 */
             if (UNTAG_Bool(REGB3)) {
-              /* ./syntax//typing.nit:262 */
+              /* syntax/typing.nit:262 */
               fra.me.REG[5] = CALL_syntax___syntax_base___AConcreteInitPropdef___explicit_super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
-              /* ./../lib/standard//collection//array.nit:241 */
+              /* ../lib/standard/collection/array.nit:278 */
               REGB3 = REGB0;
-              /* ./../lib/standard//collection//array.nit:243 */
+              /* ../lib/standard/collection/array.nit:280 */
               REGB4 = TAG_Int(0);
               REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
               if (UNTAG_Bool(REGB5)) {
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ./../lib/standard//kernel.nit:216 */
+              /* ../lib/standard/kernel.nit:236 */
               REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-              /* ./../lib/standard//collection//array.nit:243 */
+              /* ../lib/standard/collection/array.nit:280 */
               if (UNTAG_Bool(REGB4)) {
                REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
                }
                REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
                REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -1837,31 +1915,31 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ./../lib/standard//kernel.nit:215 */
+               /* ../lib/standard/kernel.nit:235 */
                REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
               } else {
-               /* ./../lib/standard//collection//array.nit:243 */
-               REGB5 = TAG_Bool(false);
+               /* ../lib/standard/collection/array.nit:280 */
+               REGB5 = TAG_Bool(0);
                REGB4 = REGB5;
               }
               if (UNTAG_Bool(REGB4)) {
               } else {
-               nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
               }
-              /* ./../lib/standard//collection//array.nit:244 */
+              /* ../lib/standard/collection/array.nit:281 */
               fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[5]);
               REGB4 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
               }
-              /* ./../lib/standard//collection//array.nit:652 */
+              /* ../lib/standard/collection/array.nit:724 */
               fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB3)];
-              /* ./../lib/standard//collection//array.nit:244 */
+              /* ../lib/standard/collection/array.nit:281 */
               goto label3;
               label3: while(0);
-              /* ./syntax//typing.nit:262 */
+              /* syntax/typing.nit:262 */
               fra.me.REG[4] = fra.me.REG[5];
-              /* ./syntax//typing.nit:263 */
+              /* syntax/typing.nit:263 */
               REGB3 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
               if (UNTAG_Bool(REGB3)) {
                nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 263);
@@ -1873,22 +1951,22 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
               fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalClass___for_module(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[7]);
               fra.me.REG[1] = fra.me.REG[7];
             } else {
-              /* ./syntax//typing.nit:265 */
+              /* syntax/typing.nit:265 */
               fra.me.REG[4] = NIT_NULL;
-              /* ./syntax//typing.nit:266 */
+              /* syntax/typing.nit:266 */
               fra.me.REG[1] = NIT_NULL;
             }
           } else {
-            /* ./syntax//typing.nit:269 */
+            /* syntax/typing.nit:269 */
             fra.me.REG[7] = CALL_syntax___syntax_base___AMethPropdef___method(fra.me.REG[2])(fra.me.REG[2]);
             fra.me.REG[7] = CALL_syntax___typing___TypingVisitor___get_default_constructor_for(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[6], fra.me.REG[7]);
-            /* ./syntax//typing.nit:270 */
+            /* syntax/typing.nit:270 */
             REGB3 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
             if (UNTAG_Bool(REGB3)) {
             } else {
               REGB4 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
-               REGB4 = TAG_Bool(false);
+               REGB4 = TAG_Bool(0);
                REGB3 = REGB4;
               } else {
                REGB4 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[7])(fra.me.REG[7], NIT_NULL);
@@ -1897,20 +1975,20 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
             }
             REGB3 = TAG_Bool(!UNTAG_Bool(REGB3));
             if (UNTAG_Bool(REGB3)) {
-              /* ./syntax//typing.nit:271 */
+              /* syntax/typing.nit:271 */
               fra.me.REG[6] = CALL_syntax___syntax_base___AConcreteInitPropdef___super_init_calls(fra.me.REG[2])(fra.me.REG[2]);
               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
             }
-            /* ./syntax//typing.nit:273 */
+            /* syntax/typing.nit:273 */
             REGB3 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-            /* ./syntax//typing.nit:273 */
+            /* syntax/typing.nit:273 */
             REGB2 = REGB3;
           }
         }
       } else {
-        /* ./syntax//typing.nit:253 */
+        /* syntax/typing.nit:253 */
         goto label4;
       }
     }
@@ -1919,42 +1997,150 @@ void syntax___typing___AConcreteInitPropdef___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AExternInitPropdef___accept_typing[] = "typing::AExternInitPropdef::(typing::ANode::accept_typing)";
+void syntax___typing___AExternInitPropdef___accept_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 281;
+  fra.me.meth = LOCATE_syntax___typing___AExternInitPropdef___accept_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:281 */
+  fra.me.REG[2] = fra.me.REG[1];
+  /* syntax/typing.nit:283 */
+  REGB0 = TAG_Bool(0);
+  CALL_syntax___typing___TypingVisitor___explicit_other_init_call__eq(fra.me.REG[2])(fra.me.REG[2], REGB0);
+  /* syntax/typing.nit:284 */
+  CALL_SUPER_syntax___typing___AExternInitPropdef___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AExternInitPropdef___after_typing[] = "typing::AExternInitPropdef::(typing::ANode::after_typing)";
+void syntax___typing___AExternInitPropdef___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 286;
+  fra.me.meth = LOCATE_syntax___typing___AExternInitPropdef___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:288 */
+  CALL_SUPER_syntax___typing___AExternInitPropdef___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___ASignature___after_typing[] = "typing::ASignature::(typing::ANode::after_typing)";
+void syntax___typing___ASignature___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+    static val_t once_value_1; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 293;
+  fra.me.meth = LOCATE_syntax___typing___ASignature___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:295 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___ASignature___n_opar(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    fra.me.REG[2] = CALL_parser___parser_nodes___ASignature___n_params(fra.me.REG[0])(fra.me.REG[0]);
+    REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[2])(fra.me.REG[2]);
+  } else {
+    REGB1 = TAG_Bool(0);
+    REGB0 = REGB1;
+  }
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:296 */
+    if (!once_value_1) {
+      fra.me.REG[2] = BOX_NativeString("Warning: superfluous parentheses.");
+      REGB0 = TAG_Int(33);
+      fra.me.REG[2] = NEW_String_standard___string___String___with_native(fra.me.REG[2], REGB0);
+      once_value_1 = fra.me.REG[2];
+      register_static_object(&once_value_1);
+    } else fra.me.REG[2] = once_value_1;
+    fra.me.REG[2] = fra.me.REG[2];
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
+  }
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AParam___after_typing[] = "typing::AParam::(typing::ANode::after_typing)";
 void syntax___typing___AParam___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 281;
+  fra.me.line = 302;
   fra.me.meth = LOCATE_syntax___typing___AParam___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:283 */
+  /* syntax/typing.nit:304 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[0] = CALL_syntax___syntax_base___AParam___variable(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___scope___ScopeContext___add_variable(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AClosureDecl___escapable[] = "typing::AClosureDecl::escapable";
 val_t syntax___typing___AClosureDecl___escapable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 288;
+  fra.me.line = 309;
   fra.me.meth = LOCATE_syntax___typing___AClosureDecl___escapable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:288 */
+  /* syntax/typing.nit:309 */
   fra.me.REG[0] = ATTR_syntax___typing___AClosureDecl____escapable(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AClosureDecl___accept_typing[] = "typing::AClosureDecl::(typing::ANode::accept_typing)";
 void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[9];} fra;
   val_t REGB0;
@@ -1965,10 +2151,11 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
           static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 291;
+  fra.me.line = 312;
   fra.me.meth = LOCATE_syntax___typing___AClosureDecl___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 10;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1981,37 +2168,37 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
   fra.me.REG[9] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:291 */
+  /* syntax/typing.nit:312 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:294 */
+  /* syntax/typing.nit:315 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_syntax___syntax_base___AClosureDecl___variable(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___scope___ScopeContext___add_variable(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* ./syntax//typing.nit:296 */
+  /* syntax/typing.nit:317 */
   fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:297 */
+  /* syntax/typing.nit:318 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:298 */
+  /* syntax/typing.nit:319 */
   fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  /* ./syntax//typing.nit:300 */
+  /* syntax/typing.nit:321 */
   fra.me.REG[6] = NIT_NULL;
-  /* ./syntax//typing.nit:301 */
+  /* syntax/typing.nit:322 */
   fra.me.REG[7] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[7] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[7])(fra.me.REG[7]);
   REGB0 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 301);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 322);
   }
   fra.me.REG[7] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[7])(fra.me.REG[7]);
-  /* ./syntax//typing.nit:302 */
+  /* syntax/typing.nit:323 */
   REGB0 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[7])(fra.me.REG[7], NIT_NULL);
@@ -2023,31 +2210,31 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
     fra.me.REG[8] = NEW_Array_standard___collection___array___Array___init();
     fra.me.REG[6] = fra.me.REG[8];
   }
-  /* ./syntax//typing.nit:303 */
+  /* syntax/typing.nit:324 */
   fra.me.REG[8] = CALL_syntax___syntax_base___AClosureDecl___variable(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[8] = CALL_syntax___syntax_base___ClosureVariable___closure(fra.me.REG[8])(fra.me.REG[8]);
   fra.me.REG[8] = NEW_EscapableClosure_syntax___scope___EscapableClosure___init(fra.me.REG[2], fra.me.REG[8], fra.me.REG[6]);
-  /* ./syntax//typing.nit:304 */
+  /* syntax/typing.nit:325 */
   ATTR_syntax___typing___AClosureDecl____escapable(fra.me.REG[2]) = fra.me.REG[8];
-  /* ./syntax//typing.nit:305 */
+  /* syntax/typing.nit:326 */
   fra.me.REG[9] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___push_escapable(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[8], NIT_NULL);
-  /* ./syntax//typing.nit:307 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:328 */
+  REGB0 = TAG_Bool(1);
   CALL_syntax___typing___TypingVisitor___is_default_closure_definition__eq(fra.me.REG[3])(fra.me.REG[3], REGB0);
-  /* ./syntax//typing.nit:309 */
+  /* syntax/typing.nit:330 */
   CALL_SUPER_syntax___typing___AClosureDecl___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:311 */
-  REGB0 = TAG_Bool(false);
+  /* syntax/typing.nit:332 */
+  REGB0 = TAG_Bool(0);
   CALL_syntax___typing___TypingVisitor___is_default_closure_definition__eq(fra.me.REG[3])(fra.me.REG[3], REGB0);
-  /* ./syntax//typing.nit:313 */
+  /* syntax/typing.nit:334 */
   fra.me.REG[1] = CALL_parser___parser_nodes___AClosureDecl___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -2056,20 +2243,20 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:314 */
+    /* syntax/typing.nit:335 */
     fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[3])(fra.me.REG[3]);
     REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[1])(fra.me.REG[1]);
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
     if (UNTAG_Bool(REGB2)) {
     } else {
-      /* ./../lib/standard//kernel.nit:178 */
+      /* ../lib/standard/kernel.nit:198 */
       REGB1 = TAG_Bool((REGB0)==(REGB1));
-      /* ./syntax//typing.nit:314 */
+      /* syntax/typing.nit:335 */
       REGB2 = REGB1;
     }
     if (UNTAG_Bool(REGB2)) {
-      /* ./syntax//typing.nit:315 */
+      /* syntax/typing.nit:336 */
       fra.me.REG[1] = CALL_syntax___syntax_base___AClosureDecl___variable(fra.me.REG[2])(fra.me.REG[2]);
       fra.me.REG[1] = CALL_syntax___syntax_base___ClosureVariable___closure(fra.me.REG[1])(fra.me.REG[1]);
       fra.me.REG[1] = CALL_metamodel___static_type___MMClosure___signature(fra.me.REG[1])(fra.me.REG[1]);
@@ -2079,7 +2266,7 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
       } else {
         REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB2 = REGB1;
         } else {
           REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -2088,7 +2275,7 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
       }
       REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//typing.nit:316 */
+        /* syntax/typing.nit:337 */
         if (!once_value_1) {
           fra.me.REG[1] = BOX_NativeString("Control error: Reached end of block (a 'continue' with a value was expected).");
           REGB2 = TAG_Int(77);
@@ -2099,7 +2286,7 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
         fra.me.REG[1] = fra.me.REG[1];
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[1]);
       } else {
-        /* ./syntax//typing.nit:317 */
+        /* syntax/typing.nit:338 */
         fra.me.REG[1] = CALL_syntax___syntax_base___AClosureDecl___variable(fra.me.REG[2])(fra.me.REG[2]);
         fra.me.REG[1] = CALL_syntax___syntax_base___ClosureVariable___closure(fra.me.REG[1])(fra.me.REG[1]);
         REGB2 = CALL_metamodel___static_type___MMClosure___is_break(fra.me.REG[1])(fra.me.REG[1]);
@@ -2110,7 +2297,7 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
           } else {
             REGB1 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
             if (UNTAG_Bool(REGB1)) {
-              REGB1 = TAG_Bool(false);
+              REGB1 = TAG_Bool(0);
               REGB2 = REGB1;
             } else {
               REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[8])(fra.me.REG[8], NIT_NULL);
@@ -2119,11 +2306,11 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
           }
           REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
         } else {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB2 = REGB1;
         }
         if (UNTAG_Bool(REGB2)) {
-          /* ./syntax//typing.nit:318 */
+          /* syntax/typing.nit:339 */
           if (!once_value_2) {
             fra.me.REG[8] = BOX_NativeString("Control error: Reached end of break block (a 'break' with a value was expected).");
             REGB2 = TAG_Int(80);
@@ -2137,13 +2324,13 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
       }
     }
   }
-  /* ./syntax//typing.nit:322 */
+  /* syntax/typing.nit:343 */
   REGB2 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB2 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], NIT_NULL);
@@ -2154,26 +2341,26 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB2)) {
     REGB2 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 322);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 343);
     }
-    /* ./../lib/standard//collection//array.nit:232 */
+    /* ../lib/standard/collection/array.nit:269 */
     REGB2 = TAG_Int(0);
-    /* ./../lib/standard//collection//array.nit:233 */
+    /* ../lib/standard/collection/array.nit:270 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-    /* ./../lib/standard//collection//array.nit:234 */
+    /* ../lib/standard/collection/array.nit:271 */
     fra.me.REG[8] = ATTR_standard___collection___array___Array____items(fra.me.REG[6]);
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     while(1) {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
       REGB0 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -2181,68 +2368,71 @@ void syntax___typing___AClosureDecl___accept_typing(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       if (UNTAG_Bool(REGB1)) {
-        /* ./../lib/standard//collection//array.nit:236 */
+        /* ../lib/standard/collection/array.nit:273 */
         REGB1 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[8])->val[UNTAG_Int(REGB2)];
-        /* ./syntax//typing.nit:323 */
+        /* syntax/typing.nit:344 */
         CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[7]);
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB1 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB1 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB2 = REGB1;
       } else {
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         goto label3;
       }
     }
     label3: while(0);
   }
-  /* ./syntax//typing.nit:326 */
+  /* syntax/typing.nit:347 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-  /* ./syntax//typing.nit:327 */
+  /* syntax/typing.nit:348 */
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:328 */
+  /* syntax/typing.nit:349 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[3])(fra.me.REG[3]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AType___stype[] = "typing::AType::(syntax_base::AType::stype)";
 val_t syntax___typing___AType___stype(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 333;
+  fra.me.line = 354;
   fra.me.meth = LOCATE_syntax___typing___AType___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:333 */
+  /* syntax/typing.nit:354 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AType____stype(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 333);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 354);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AType___is_typed[] = "typing::AType::(syntax_base::AType::is_typed)";
 val_t syntax___typing___AType___is_typed(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -2250,20 +2440,21 @@ val_t syntax___typing___AType___is_typed(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 334;
+  fra.me.line = 355;
   fra.me.meth = LOCATE_syntax___typing___AType___is_typed;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:334 */
+  /* syntax/typing.nit:355 */
   fra.me.REG[0] = ATTR_syntax___typing___AType____stype(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -2276,47 +2467,52 @@ val_t syntax___typing___AType___is_typed(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AType___after_typing[] = "typing::AType::(typing::ANode::after_typing)";
 void syntax___typing___AType___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 337;
+  fra.me.line = 358;
   fra.me.meth = LOCATE_syntax___typing___AType___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:339 */
+  /* syntax/typing.nit:360 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AType___get_stype(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   ATTR_syntax___typing___AType____stype(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AExpr___is_typed[] = "typing::AExpr::(syntax_base::AExpr::is_typed)";
 val_t syntax___typing___AExpr___is_typed(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 344;
+  fra.me.line = 365;
   fra.me.meth = LOCATE_syntax___typing___AExpr___is_typed;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:344 */
+  /* syntax/typing.nit:365 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_is_typed", LOCATE_syntax___typing, 344);
+    nit_abort("Uninitialized attribute %s", "_is_typed", LOCATE_syntax___typing, 365);
   }
   REGB0 = ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AExpr___is_statement[] = "typing::AExpr::(syntax_base::AExpr::is_statement)";
 val_t syntax___typing___AExpr___is_statement(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -2324,20 +2520,21 @@ val_t syntax___typing___AExpr___is_statement(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 345;
+  fra.me.line = 366;
   fra.me.meth = LOCATE_syntax___typing___AExpr___is_statement;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:345 */
+  /* syntax/typing.nit:366 */
   fra.me.REG[0] = ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -2349,6 +2546,7 @@ val_t syntax___typing___AExpr___is_statement(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AExpr___stype[] = "typing::AExpr::(syntax_base::AExpr::stype)";
 val_t syntax___typing___AExpr___stype(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -2359,22 +2557,23 @@ val_t syntax___typing___AExpr___stype(val_t p0){
     static val_t once_value_4; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 346;
+  fra.me.line = 367;
   fra.me.meth = LOCATE_syntax___typing___AExpr___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:346 */
+  /* syntax/typing.nit:367 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:348 */
+  /* syntax/typing.nit:369 */
   REGB0 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:349 */
+    /* syntax/typing.nit:370 */
     REGB0 = TAG_Int(3);
     fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_1) {
@@ -2400,13 +2599,13 @@ val_t syntax___typing___AExpr___stype(val_t p0){
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
     fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
     CALL_standard___file___Object___print(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-    /* ./syntax//typing.nit:350 */
-    nit_abort("Aborted", NULL, LOCATE_syntax___typing, 350);
+    /* syntax/typing.nit:371 */
+    nit_abort("Aborted", NULL, LOCATE_syntax___typing, 371);
   }
-  /* ./syntax//typing.nit:352 */
+  /* syntax/typing.nit:373 */
   REGB0 = CALL_syntax___syntax_base___AExpr___is_statement(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:353 */
+    /* syntax/typing.nit:374 */
     REGB0 = TAG_Int(3);
     fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_3) {
@@ -2432,155 +2631,255 @@ val_t syntax___typing___AExpr___stype(val_t p0){
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
     fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
     CALL_standard___file___Object___print(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-    /* ./syntax//typing.nit:354 */
-    nit_abort("Aborted", NULL, LOCATE_syntax___typing, 354);
+    /* syntax/typing.nit:375 */
+    nit_abort("Aborted", NULL, LOCATE_syntax___typing, 375);
   }
-  /* ./syntax//typing.nit:356 */
+  /* syntax/typing.nit:377 */
   fra.me.REG[1] = ATTR_syntax___typing___AExpr____stype(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 356);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 377);
   }
   goto label5;
   label5: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AExpr___after_typing[] = "typing::AExpr::(typing::ANode::after_typing)";
 void syntax___typing___AExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 360;
+  fra.me.line = 381;
   fra.me.meth = LOCATE_syntax___typing___AExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:363 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:384 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AExpr___is_implicit_self[] = "typing::AExpr::is_implicit_self";
 val_t syntax___typing___AExpr___is_implicit_self(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 366;
+  fra.me.line = 387;
   fra.me.meth = LOCATE_syntax___typing___AExpr___is_implicit_self;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:367 */
-  REGB0 = TAG_Bool(false);
+  /* syntax/typing.nit:388 */
+  REGB0 = TAG_Bool(0);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AExpr___is_self[] = "typing::AExpr::is_self";
 val_t syntax___typing___AExpr___is_self(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 369;
+  fra.me.line = 390;
   fra.me.meth = LOCATE_syntax___typing___AExpr___is_self;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:370 */
-  REGB0 = TAG_Bool(false);
+  /* syntax/typing.nit:391 */
+  REGB0 = TAG_Bool(0);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AExpr___its_variable[] = "typing::AExpr::its_variable";
 val_t syntax___typing___AExpr___its_variable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 372;
+  fra.me.line = 393;
   fra.me.meth = LOCATE_syntax___typing___AExpr___its_variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:373 */
+  /* syntax/typing.nit:394 */
   fra.me.REG[0] = NIT_NULL;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AExpr___if_true_flow_ctx[] = "typing::AExpr::if_true_flow_ctx";
 val_t syntax___typing___AExpr___if_true_flow_ctx(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 375;
+  fra.me.line = 396;
   fra.me.meth = LOCATE_syntax___typing___AExpr___if_true_flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:375 */
+  /* syntax/typing.nit:396 */
   fra.me.REG[0] = ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AExpr___if_false_flow_ctx[] = "typing::AExpr::if_false_flow_ctx";
 val_t syntax___typing___AExpr___if_false_flow_ctx(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 378;
+  fra.me.line = 399;
   fra.me.meth = LOCATE_syntax___typing___AExpr___if_false_flow_ctx;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:378 */
+  /* syntax/typing.nit:399 */
   fra.me.REG[0] = ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AExpr___warn_parentheses[] = "typing::AExpr::warn_parentheses";
+void syntax___typing___AExpr___warn_parentheses(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 402;
+  fra.me.meth = LOCATE_syntax___typing___AExpr___warn_parentheses;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AParExpr___warn_parentheses[] = "typing::AParExpr::(typing::AExpr::warn_parentheses)";
+void syntax___typing___AParExpr___warn_parentheses(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t tmp;
+  static val_t once_value_1; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 409;
+  fra.me.meth = LOCATE_syntax___typing___AParExpr___warn_parentheses;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:411 */
+  if (!once_value_1) {
+    fra.me.REG[2] = BOX_NativeString("Warning: superfluous parentheses.");
+    REGB0 = TAG_Int(33);
+    fra.me.REG[2] = NEW_String_standard___string___String___with_native(fra.me.REG[2], REGB0);
+    once_value_1 = fra.me.REG[2];
+    register_static_object(&once_value_1);
+  } else fra.me.REG[2] = once_value_1;
+  fra.me.REG[2] = fra.me.REG[2];
+  CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AParExprs___after_typing[] = "typing::AParExprs::(typing::ANode::after_typing)";
+void syntax___typing___AParExprs___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t tmp;
+    static val_t once_value_1; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 416;
+  fra.me.meth = LOCATE_syntax___typing___AParExprs___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:418 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___AExprs___n_exprs(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[2])(fra.me.REG[2]);
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:419 */
+    if (!once_value_1) {
+      fra.me.REG[2] = BOX_NativeString("Warning: superfluous parentheses.");
+      REGB0 = TAG_Int(33);
+      fra.me.REG[2] = NEW_String_standard___string___String___with_native(fra.me.REG[2], REGB0);
+      once_value_1 = fra.me.REG[2];
+      register_static_object(&once_value_1);
+    } else fra.me.REG[2] = once_value_1;
+    fra.me.REG[2] = fra.me.REG[2];
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
+  }
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AVardeclExpr___variable[] = "typing::AVardeclExpr::(syntax_base::AVardeclExpr::variable)";
 val_t syntax___typing___AVardeclExpr___variable(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 384;
+  fra.me.line = 426;
   fra.me.meth = LOCATE_syntax___typing___AVardeclExpr___variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:384 */
+  /* syntax/typing.nit:426 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AVardeclExpr____variable(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 384);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 426);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AVardeclExpr___after_typing[] = "typing::AVardeclExpr::(typing::ANode::after_typing)";
 void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -2588,10 +2887,11 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 386;
+  fra.me.line = 428;
   fra.me.meth = LOCATE_syntax___typing___AVardeclExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -2599,25 +2899,25 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:388 */
+  /* syntax/typing.nit:430 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AVardeclExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[3] = CALL_parser___parser_nodes___AVardeclExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = NEW_VarVariable_syntax___syntax_base___VarVariable___init(fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:389 */
+  /* syntax/typing.nit:431 */
   ATTR_syntax___typing___AVardeclExpr____variable(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:390 */
+  /* syntax/typing.nit:432 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___add_variable(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:391 */
+  /* syntax/typing.nit:433 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AVardeclExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./syntax//typing.nit:392 */
+  /* syntax/typing.nit:434 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2628,14 +2928,14 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     CALL_syntax___typing___TypingVisitor___mark_is_set(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   }
-  /* ./syntax//typing.nit:394 */
+  /* syntax/typing.nit:436 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AVardeclExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -2644,32 +2944,32 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:395 */
+    /* syntax/typing.nit:437 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AVardeclExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
     REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 395);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 437);
     }
     REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[4])(fra.me.REG[4]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
       goto label1;
     }
-    /* ./syntax//typing.nit:396 */
+    /* syntax/typing.nit:438 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AVardeclExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
     REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 396);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 438);
     }
     fra.me.REG[4] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[4])(fra.me.REG[4]);
     CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    /* ./syntax//typing.nit:397 */
+    /* syntax/typing.nit:439 */
     REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2678,18 +2978,18 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:398 */
+      /* syntax/typing.nit:440 */
       fra.me.REG[4] = CALL_syntax___syntax_base___Variable___stype(fra.me.REG[3])(fra.me.REG[3]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
     }
   } else {
-    /* ./syntax//typing.nit:400 */
+    /* syntax/typing.nit:442 */
     REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2698,53 +2998,69 @@ void syntax___typing___AVardeclExpr___after_typing(val_t p0, val_t p1){
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:401 */
+      /* syntax/typing.nit:443 */
       REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
         goto label1;
       }
-      /* ./syntax//typing.nit:402 */
+      /* syntax/typing.nit:444 */
       REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
-        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 402);
+        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 444);
       }
       fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
-      CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
+      /* syntax/typing.nit:445 */
+      REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
+      if (UNTAG_Bool(REGB0)) {
+        /* syntax/typing.nit:446 */
+        fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_object(fra.me.REG[1])(fra.me.REG[1]);
+        fra.me.REG[4] = CALL_metamodel___static_type___MMType___as_nullable(fra.me.REG[4])(fra.me.REG[4]);
+        CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+        /* syntax/typing.nit:447 */
+        fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
+        fra.me.REG[4] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[3], fra.me.REG[2]);
+        CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
+      } else {
+        /* syntax/typing.nit:449 */
+        CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
+      }
     } else {
-      /* ./syntax//typing.nit:404 */
+      /* syntax/typing.nit:452 */
       fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_object(fra.me.REG[1])(fra.me.REG[1]);
       fra.me.REG[1] = CALL_metamodel___static_type___MMType___as_nullable(fra.me.REG[1])(fra.me.REG[1]);
       CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
     }
   }
-  /* ./syntax//typing.nit:406 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:454 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ABlockExpr___accept_typing[] = "typing::ABlockExpr::(typing::ANode::accept_typing)";
 void syntax___typing___ABlockExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 411;
+  fra.me.line = 459;
   fra.me.meth = LOCATE_syntax___typing___ABlockExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:413 */
+  /* syntax/typing.nit:461 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ABlockExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[2])(fra.me.REG[2], (&(fra.me)), ((fun_t)OC_syntax___typing___ABlockExpr___accept_typing_1));
-  /* ./syntax//typing.nit:422 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:470 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
@@ -2761,30 +3077,31 @@ void syntax___typing___ABlockExpr___accept_typing(val_t p0, val_t p1){
     fra.me.meth = LOCATE_syntax___typing___ABlockExpr___accept_typing;
     fra.me.has_broke = 0;
     fra.me.REG_size = 2;
+    fra.me.nitni_local_ref_head = NULL;
     fra.me.REG[0] = NIT_NULL;
     fra.me.REG[1] = NIT_NULL;
     fra.me.closure_ctx = closctx_param;
     fra.me.closure_funs = CREG;
     fra.me.REG[0] = p0;
     CREG[0] = clos_fun0;
-    /* ./syntax//typing.nit:414 */
+    /* syntax/typing.nit:462 */
     fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(closctx->REG[1])(closctx->REG[1]);
     REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:415 */
+      /* syntax/typing.nit:463 */
       CALL_parser___parser_prod___Visitor___enter_visit(closctx->REG[1])(closctx->REG[1], fra.me.REG[0]);
     } else {
-      /* ./syntax//typing.nit:416 */
+      /* syntax/typing.nit:464 */
       fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(closctx->REG[1])(closctx->REG[1]);
       REGB0 = CALL_syntax___flow___FlowContext___already_unreash(fra.me.REG[1])(fra.me.REG[1]);
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:417 */
+        /* syntax/typing.nit:465 */
         fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(closctx->REG[1])(closctx->REG[1]);
-        REGB0 = TAG_Bool(true);
+        REGB0 = TAG_Bool(1);
         CALL_syntax___flow___FlowContext___already_unreash__eq(fra.me.REG[1])(fra.me.REG[1], REGB0);
-        /* ./syntax//typing.nit:418 */
+        /* syntax/typing.nit:466 */
         if (!once_value_2) {
           fra.me.REG[1] = BOX_NativeString("Error: unreachable statement.");
           REGB0 = TAG_Int(29);
@@ -2799,6 +3116,7 @@ void syntax___typing___ABlockExpr___accept_typing(val_t p0, val_t p1){
     stack_frame_head = fra.me.prev;
     return;
   }
+static const char LOCATE_syntax___typing___AReturnExpr___after_typing[] = "typing::AReturnExpr::(typing::ANode::after_typing)";
 void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -2809,10 +3127,11 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_4; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 427;
+  fra.me.line = 475;
   fra.me.meth = LOCATE_syntax___typing___AReturnExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -2820,20 +3139,20 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:429 */
+  /* syntax/typing.nit:477 */
   CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:430 */
+  /* syntax/typing.nit:478 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 430);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 478);
   }
   fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:432 */
+  /* syntax/typing.nit:480 */
   REGB0 = CALL_syntax___typing___TypingVisitor___is_default_closure_definition(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:433 */
+    /* syntax/typing.nit:481 */
     if (!once_value_1) {
       fra.me.REG[3] = BOX_NativeString("Error: 'return' invalid in default closure definitions. Use 'continue' or 'break'.");
       REGB0 = TAG_Int(82);
@@ -2843,18 +3162,18 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
     } else fra.me.REG[3] = once_value_1;
     fra.me.REG[3] = fra.me.REG[3];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
-    /* ./syntax//typing.nit:434 */
+    /* syntax/typing.nit:482 */
     goto label2;
   }
-  /* ./syntax//typing.nit:437 */
+  /* syntax/typing.nit:485 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AReturnExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./syntax//typing.nit:438 */
+  /* syntax/typing.nit:486 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -2867,7 +3186,7 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
     } else {
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2876,11 +3195,11 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:439 */
+    /* syntax/typing.nit:487 */
     if (!once_value_3) {
       fra.me.REG[4] = BOX_NativeString("Error: Return without value in a function.");
       REGB0 = TAG_Int(42);
@@ -2891,13 +3210,13 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
     fra.me.REG[4] = fra.me.REG[4];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
   } else {
-    /* ./syntax//typing.nit:440 */
+    /* syntax/typing.nit:488 */
     REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -2911,7 +3230,7 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
       } else {
         REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
           REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2919,11 +3238,11 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
         }
       }
     } else {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     }
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:441 */
+      /* syntax/typing.nit:489 */
       if (!once_value_4) {
         fra.me.REG[4] = BOX_NativeString("Error: Return with value in a procedure.");
         REGB0 = TAG_Int(40);
@@ -2934,13 +3253,13 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
       fra.me.REG[4] = fra.me.REG[4];
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
     } else {
-      /* ./syntax//typing.nit:442 */
+      /* syntax/typing.nit:490 */
       REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
         REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
           REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -2954,7 +3273,7 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
         } else {
           REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
-            REGB1 = TAG_Bool(false);
+            REGB1 = TAG_Bool(0);
             REGB0 = REGB1;
           } else {
             REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -2963,22 +3282,45 @@ void syntax___typing___AReturnExpr___after_typing(val_t p0, val_t p1){
         }
         REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       } else {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:443 */
+        /* syntax/typing.nit:491 */
         CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[2]);
       }
     }
   }
-  /* ./syntax//typing.nit:445 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:493 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:494 */
+    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 494);
+    }
+    CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
+  }
+  /* syntax/typing.nit:496 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AContinueExpr___after_typing[] = "typing::AContinueExpr::(typing::ANode::after_typing)";
 void syntax___typing___AContinueExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -2989,10 +3331,11 @@ void syntax___typing___AContinueExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_4; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 450;
+  fra.me.line = 501;
   fra.me.meth = LOCATE_syntax___typing___AContinueExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -3000,89 +3343,88 @@ void syntax___typing___AContinueExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:450 */
-  fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:452 */
-  CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:453 */
-  fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[3] = CALL_syntax___scope___AEscapeExpr___compute_escapable_block(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:454 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  /* syntax/typing.nit:503 */
+  CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
+  /* syntax/typing.nit:504 */
+  fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[2] = CALL_syntax___scope___AEscapeExpr___compute_escapable_block(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
+  /* syntax/typing.nit:505 */
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
       REGB0 = REGB1;
     }
   }
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:456 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  /* syntax/typing.nit:507 */
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 456);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 507);
   }
-  REGB0 = CALL_syntax___scope___EscapableBlock___is_break_block(fra.me.REG[3])(fra.me.REG[3]);
+  REGB0 = CALL_syntax___scope___EscapableBlock___is_break_block(fra.me.REG[2])(fra.me.REG[2]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:457 */
+    /* syntax/typing.nit:508 */
     if (!once_value_2) {
-      fra.me.REG[4] = BOX_NativeString("Error: cannot 'continue', only 'break'.");
+      fra.me.REG[3] = BOX_NativeString("Error: cannot 'continue', only 'break'.");
       REGB0 = TAG_Int(39);
-      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
-      once_value_2 = fra.me.REG[4];
+      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+      once_value_2 = fra.me.REG[3];
       register_static_object(&once_value_2);
-    } else fra.me.REG[4] = once_value_2;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
-    /* ./syntax//typing.nit:458 */
+    } else fra.me.REG[3] = once_value_2;
+    fra.me.REG[3] = fra.me.REG[3];
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
+    /* syntax/typing.nit:509 */
     goto label1;
   }
-  /* ./syntax//typing.nit:461 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  /* syntax/typing.nit:512 */
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 461);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 512);
   }
-  fra.me.REG[3] = CALL_syntax___scope___EscapableBlock___continue_stype(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:462 */
-  fra.me.REG[4] = CALL_parser___parser_nodes___AContinueExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+  fra.me.REG[2] = CALL_syntax___scope___EscapableBlock___continue_stype(fra.me.REG[2])(fra.me.REG[2]);
+  /* syntax/typing.nit:513 */
+  fra.me.REG[3] = CALL_parser___parser_nodes___AContinueExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  /* syntax/typing.nit:514 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
       REGB0 = REGB1;
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
         REGB0 = REGB1;
       }
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:463 */
+    /* syntax/typing.nit:515 */
     if (!once_value_3) {
       fra.me.REG[4] = BOX_NativeString("Error: continue with a value required in this block.");
       REGB0 = TAG_Int(52);
@@ -3091,42 +3433,41 @@ void syntax___typing___AContinueExpr___after_typing(val_t p0, val_t p1){
       register_static_object(&once_value_3);
     } else fra.me.REG[4] = once_value_3;
     fra.me.REG[4] = fra.me.REG[4];
-    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
   } else {
-    /* ./syntax//typing.nit:464 */
-    fra.me.REG[4] = CALL_parser___parser_nodes___AContinueExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+    /* syntax/typing.nit:516 */
+    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
         REGB0 = REGB1;
       }
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+      REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+        REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
-          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
           REGB0 = REGB1;
         }
       }
     } else {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     }
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:465 */
+      /* syntax/typing.nit:517 */
       if (!once_value_4) {
         fra.me.REG[4] = BOX_NativeString("Error: continue without value required in this block.");
         REGB0 = TAG_Int(53);
@@ -3135,62 +3476,78 @@ void syntax___typing___AContinueExpr___after_typing(val_t p0, val_t p1){
         register_static_object(&once_value_4);
       } else fra.me.REG[4] = once_value_4;
       fra.me.REG[4] = fra.me.REG[4];
-      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
+      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
     } else {
-      /* ./syntax//typing.nit:466 */
-      fra.me.REG[4] = CALL_parser___parser_nodes___AContinueExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-      REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+      /* syntax/typing.nit:518 */
+      REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+        REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
-          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
           REGB0 = REGB1;
         }
       }
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
-        REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+        REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB0)) {
         } else {
-          REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+          REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
-            REGB1 = TAG_Bool(false);
+            REGB1 = TAG_Bool(0);
             REGB0 = REGB1;
           } else {
-            REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+            REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
             REGB0 = REGB1;
           }
         }
         REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       } else {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:467 */
-        fra.me.REG[4] = CALL_parser___parser_nodes___AContinueExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-        REGB0 = TAG_Bool((fra.me.REG[4]!=NIT_NULL) && VAL_ISA(fra.me.REG[4], COLOR_parser___parser_nodes___AExpr, ID_parser___parser_nodes___AExpr)) /*cast AExpr*/;
-        if (UNTAG_Bool(REGB0)) {
-        } else {
-          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 467);
-        }
-        CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4], fra.me.REG[3]);
+        /* syntax/typing.nit:519 */
+        CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[2]);
       }
     }
   }
-  /* ./syntax//typing.nit:469 */
-  REGB0 = TAG_Bool(true);
-  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB0;
+  /* syntax/typing.nit:521 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:522 */
+    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 522);
+    }
+    CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
+  }
+  /* syntax/typing.nit:524 */
+  REGB0 = TAG_Bool(1);
+  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ABreakExpr___after_typing[] = "typing::ABreakExpr::(typing::ANode::after_typing)";
 void syntax___typing___ABreakExpr___after_typing(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
+  struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t tmp;
@@ -3198,238 +3555,256 @@ void syntax___typing___ABreakExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_3; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 474;
+  fra.me.line = 529;
   fra.me.meth = LOCATE_syntax___typing___ABreakExpr___after_typing;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 6;
+  fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:474 */
-  fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:476 */
-  fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:477 */
-  CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:478 */
-  fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_syntax___scope___AEscapeExpr___compute_escapable_block(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  /* ./syntax//typing.nit:479 */
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+  /* syntax/typing.nit:531 */
+  fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
+  /* syntax/typing.nit:532 */
+  CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
+  /* syntax/typing.nit:533 */
+  fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[3] = CALL_syntax___scope___AEscapeExpr___compute_escapable_block(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
+  /* syntax/typing.nit:534 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
       REGB0 = REGB1;
     }
   }
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:481 */
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+  /* syntax/typing.nit:536 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 481);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 536);
   }
-  fra.me.REG[5] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  /* ./syntax//typing.nit:483 */
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+  fra.me.REG[4] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[3])(fra.me.REG[3]);
+  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
+  /* syntax/typing.nit:538 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 483);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 538);
   }
-  fra.me.REG[4] = CALL_syntax___scope___EscapableBlock___break_list(fra.me.REG[4])(fra.me.REG[4]);
-  /* ./syntax//typing.nit:484 */
-  fra.me.REG[3] = CALL_parser___parser_nodes___ABreakExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  fra.me.REG[3] = CALL_syntax___scope___EscapableBlock___break_list(fra.me.REG[3])(fra.me.REG[3]);
+  /* syntax/typing.nit:539 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___ABreakExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  /* syntax/typing.nit:540 */
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
       REGB0 = REGB1;
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
         REGB0 = REGB1;
       }
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:485 */
+    /* syntax/typing.nit:541 */
     if (!once_value_2) {
-      fra.me.REG[3] = BOX_NativeString("Error: break with a value required in this block.");
+      fra.me.REG[4] = BOX_NativeString("Error: break with a value required in this block.");
       REGB0 = TAG_Int(49);
-      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
-      once_value_2 = fra.me.REG[3];
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
+      once_value_2 = fra.me.REG[4];
       register_static_object(&once_value_2);
-    } else fra.me.REG[3] = once_value_2;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
+    } else fra.me.REG[4] = once_value_2;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
   } else {
-    /* ./syntax//typing.nit:486 */
-    fra.me.REG[3] = CALL_parser___parser_nodes___ABreakExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    /* syntax/typing.nit:542 */
+    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
         REGB0 = REGB1;
       }
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+      REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+        REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
-          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
           REGB0 = REGB1;
         }
       }
     } else {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     }
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:487 */
+      /* syntax/typing.nit:543 */
       if (!once_value_3) {
-        fra.me.REG[3] = BOX_NativeString("Error: break without value required in this block.");
+        fra.me.REG[4] = BOX_NativeString("Error: break without value required in this block.");
         REGB0 = TAG_Int(50);
-        fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
-        once_value_3 = fra.me.REG[3];
+        fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
+        once_value_3 = fra.me.REG[4];
         register_static_object(&once_value_3);
-      } else fra.me.REG[3] = once_value_3;
-      fra.me.REG[3] = fra.me.REG[3];
-      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
+      } else fra.me.REG[4] = once_value_3;
+      fra.me.REG[4] = fra.me.REG[4];
+      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
     } else {
-      /* ./syntax//typing.nit:488 */
-      fra.me.REG[3] = CALL_parser___parser_nodes___ABreakExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-      REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+      /* syntax/typing.nit:544 */
+      REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+        REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
-          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
           REGB0 = REGB1;
         }
       }
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
-        REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+        REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB0)) {
         } else {
-          REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+          REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
-            REGB1 = TAG_Bool(false);
+            REGB1 = TAG_Bool(0);
             REGB0 = REGB1;
           } else {
-            REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
+            REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
             REGB0 = REGB1;
           }
         }
         REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       } else {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:490 */
-        fra.me.REG[3] = CALL_parser___parser_nodes___ABreakExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
-        REGB0 = TAG_Bool((fra.me.REG[3]!=NIT_NULL) && VAL_ISA(fra.me.REG[3], COLOR_parser___parser_nodes___AExpr, ID_parser___parser_nodes___AExpr)) /*cast AExpr*/;
-        if (UNTAG_Bool(REGB0)) {
-        } else {
-          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 490);
-        }
-        REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
+        /* syntax/typing.nit:546 */
+        REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB0)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 490);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 546);
         }
-        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
       }
     }
   }
-  /* ./syntax//typing.nit:492 */
-  REGB0 = TAG_Bool(true);
-  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB0;
+  /* syntax/typing.nit:548 */
+  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:549 */
+    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 549);
+    }
+    CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
+  }
+  /* syntax/typing.nit:551 */
+  REGB0 = TAG_Bool(1);
+  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAbortExpr___after_typing[] = "typing::AAbortExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAbortExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 497;
+  fra.me.line = 556;
   fra.me.meth = LOCATE_syntax___typing___AAbortExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:499 */
+  /* syntax/typing.nit:558 */
   CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:500 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:559 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAbsControl___escapable[] = "typing::AAbsControl::escapable";
 val_t syntax___typing___AAbsControl___escapable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 507;
+  fra.me.line = 566;
   fra.me.meth = LOCATE_syntax___typing___AAbsControl___escapable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:507 */
+  /* syntax/typing.nit:566 */
   fra.me.REG[0] = ATTR_syntax___typing___AAbsControl____escapable(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AAbsControl___process_control[] = "typing::AAbsControl::process_control";
 void syntax___typing___AAbsControl___process_control(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -3437,10 +3812,11 @@ void syntax___typing___AAbsControl___process_control(val_t p0, val_t p1, val_t p
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 510;
+  fra.me.line = 569;
   fra.me.meth = LOCATE_syntax___typing___AAbsControl___process_control;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -3453,126 +3829,134 @@ void syntax___typing___AAbsControl___process_control(val_t p0, val_t p1, val_t p
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
   REGB0 = p4;
-  /* ./syntax//typing.nit:514 */
+  /* syntax/typing.nit:573 */
   ATTR_syntax___typing___AAbsControl____escapable(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:515 */
+  /* syntax/typing.nit:574 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___push_escapable(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:518 */
+  /* syntax/typing.nit:577 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:519 */
+  /* syntax/typing.nit:578 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:520 */
+  /* syntax/typing.nit:579 */
   if (UNTAG_Bool(REGB0)) {
     fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5]);
   }
-  /* ./syntax//typing.nit:523 */
+  /* syntax/typing.nit:582 */
   CALL_syntax___typing___AAbsControl___process_control_inside(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:526 */
+  /* syntax/typing.nit:585 */
   fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   REGB1 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[5])(fra.me.REG[5]);
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:527 */
+    /* syntax/typing.nit:586 */
     fra.me.REG[5] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
   }
-  /* ./syntax//typing.nit:531 */
+  /* syntax/typing.nit:590 */
   fra.me.REG[6] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[2])(fra.me.REG[2]);
   REGB1 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[6])(fra.me.REG[6]);
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:532 */
+    /* syntax/typing.nit:591 */
     CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-    /* ./syntax//typing.nit:533 */
+    /* syntax/typing.nit:592 */
     CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   } else {
-    /* ./syntax//typing.nit:535 */
+    /* syntax/typing.nit:594 */
     fra.me.REG[2] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = CALL_syntax___flow___FlowContext___merge(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[2]);
     CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   }
-  /* ./syntax//typing.nit:538 */
+  /* syntax/typing.nit:597 */
   if (UNTAG_Bool(REGB0)) {
     CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
   }
-  /* ./syntax//typing.nit:539 */
+  /* syntax/typing.nit:598 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:540 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:599 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAbsControl___process_control_inside[] = "typing::AAbsControl::process_control_inside";
 void syntax___typing___AAbsControl___process_control_inside(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 543;
+  fra.me.line = 602;
   fra.me.meth = LOCATE_syntax___typing___AAbsControl___process_control_inside;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./syntax//typing.nit:543 */
-  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 543);
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:602 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 602);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ADoExpr___accept_typing[] = "typing::ADoExpr::(typing::ANode::accept_typing)";
 void syntax___typing___ADoExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 549;
+  fra.me.line = 608;
   fra.me.meth = LOCATE_syntax___typing___ADoExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:551 */
+  /* syntax/typing.nit:610 */
   fra.me.REG[2] = NEW_BreakOnlyEscapableBlock_syntax___scope___BreakOnlyEscapableBlock___init(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___ALabelable___n_label(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(false);
+  REGB0 = TAG_Bool(0);
   CALL_syntax___typing___AAbsControl___process_control(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ADoExpr___process_control_inside[] = "typing::ADoExpr::(typing::AAbsControl::process_control_inside)";
 void syntax___typing___ADoExpr___process_control_inside(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 554;
+  fra.me.line = 613;
   fra.me.meth = LOCATE_syntax___typing___ADoExpr___process_control_inside;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:556 */
+  /* syntax/typing.nit:615 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ADoExpr___n_block(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AIfExpr___accept_typing[] = "typing::AIfExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AIfExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 561;
+  fra.me.line = 620;
   fra.me.meth = LOCATE_syntax___typing___AIfExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -3580,66 +3964,72 @@ void syntax___typing___AIfExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:563 */
+  /* syntax/typing.nit:622 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:564 */
+  /* syntax/typing.nit:623 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:567 */
+  /* syntax/typing.nit:625 */
+  fra.me.REG[3] = CALL_parser___parser_nodes___AIfExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
+  /* syntax/typing.nit:628 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:568 */
+  /* syntax/typing.nit:629 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:571 */
+  /* syntax/typing.nit:632 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfExpr___n_then(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:574 */
+  /* syntax/typing.nit:635 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:577 */
+  /* syntax/typing.nit:638 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:578 */
+  /* syntax/typing.nit:639 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIfExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:581 */
+  /* syntax/typing.nit:642 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIfExpr___n_else(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:584 */
+  /* syntax/typing.nit:645 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[4] = CALL_syntax___flow___FlowContext___merge_reash(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0], fra.me.REG[2], fra.me.REG[4]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:585 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:646 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AWhileExpr___accept_typing[] = "typing::AWhileExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AWhileExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 591;
+  fra.me.line = 652;
   fra.me.meth = LOCATE_syntax___typing___AWhileExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:593 */
+  /* syntax/typing.nit:654 */
   fra.me.REG[2] = NEW_EscapableBlock_syntax___scope___EscapableBlock___init(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___ALabelable___n_label(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(true);
+  REGB0 = TAG_Bool(1);
   CALL_syntax___typing___AAbsControl___process_control(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AWhileExpr___process_control_inside[] = "typing::AWhileExpr::(typing::AAbsControl::process_control_inside)";
 void syntax___typing___AWhileExpr___process_control_inside(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -3647,10 +4037,11 @@ void syntax___typing___AWhileExpr___process_control_inside(val_t p0, val_t p1){
     static val_t once_value_1; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 596;
+  fra.me.line = 657;
   fra.me.meth = LOCATE_syntax___typing___AWhileExpr___process_control_inside;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -3658,20 +4049,20 @@ void syntax___typing___AWhileExpr___process_control_inside(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:598 */
+  /* syntax/typing.nit:659 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:601 */
+  /* syntax/typing.nit:662 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:602 */
+  /* syntax/typing.nit:663 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:604 */
+  /* syntax/typing.nit:665 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[4], COLOR_parser___parser_nodes___ATrueExpr, ID_parser___parser_nodes___ATrueExpr)) /*cast ATrueExpr*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:605 */
+    /* syntax/typing.nit:666 */
     if (!once_value_1) {
       fra.me.REG[4] = BOX_NativeString("Warning: use 'loop' instead of 'while true do'.");
       REGB0 = TAG_Int(47);
@@ -3681,23 +4072,27 @@ void syntax___typing___AWhileExpr___process_control_inside(val_t p0, val_t p1){
     } else fra.me.REG[4] = once_value_1;
     fra.me.REG[4] = fra.me.REG[4];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
+  } else {
+    /* syntax/typing.nit:668 */
+    fra.me.REG[4] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+    CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
   }
-  /* ./syntax//typing.nit:609 */
+  /* syntax/typing.nit:672 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:612 */
+  /* syntax/typing.nit:675 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AWhileExpr___n_block(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:615 */
+  /* syntax/typing.nit:678 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:616 */
+  /* syntax/typing.nit:679 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AWhileExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:617 */
+  /* syntax/typing.nit:680 */
   fra.me.REG[0] = CALL_syntax___typing___AAbsControl___escapable(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 617);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 680);
   }
   fra.me.REG[0] = CALL_syntax___scope___EscapableBlock___break_flow_contexts(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
@@ -3705,134 +4100,145 @@ void syntax___typing___AWhileExpr___process_control_inside(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ALoopExpr___accept_typing[] = "typing::ALoopExpr::(typing::ANode::accept_typing)";
 void syntax___typing___ALoopExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 623;
+  fra.me.line = 686;
   fra.me.meth = LOCATE_syntax___typing___ALoopExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:625 */
+  /* syntax/typing.nit:688 */
   fra.me.REG[2] = NEW_EscapableBlock_syntax___scope___EscapableBlock___init(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___ALabelable___n_label(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(true);
+  REGB0 = TAG_Bool(1);
   CALL_syntax___typing___AAbsControl___process_control(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ALoopExpr___process_control_inside[] = "typing::ALoopExpr::(typing::AAbsControl::process_control_inside)";
 void syntax___typing___ALoopExpr___process_control_inside(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 628;
+  fra.me.line = 691;
   fra.me.meth = LOCATE_syntax___typing___ALoopExpr___process_control_inside;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:631 */
+  /* syntax/typing.nit:694 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ALoopExpr___n_block(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:634 */
+  /* syntax/typing.nit:697 */
   CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AForExpr___variables[] = "typing::AForExpr::(syntax_base::AForExpr::variables)";
 val_t syntax___typing___AForExpr___variables(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 641;
+  fra.me.line = 704;
   fra.me.meth = LOCATE_syntax___typing___AForExpr___variables;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:641 */
+  /* syntax/typing.nit:704 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AForExpr____variables(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 641);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 704);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AForExpr___accept_typing[] = "typing::AForExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AForExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 643;
+  fra.me.line = 706;
   fra.me.meth = LOCATE_syntax___typing___AForExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:645 */
+  /* syntax/typing.nit:708 */
   fra.me.REG[2] = NEW_EscapableBlock_syntax___scope___EscapableBlock___init(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___ALabelable___n_label(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(true);
+  REGB0 = TAG_Bool(1);
   CALL_syntax___typing___AAbsControl___process_control(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AForExpr___process_control_inside[] = "typing::AForExpr::(typing::AAbsControl::process_control_inside)";
 void syntax___typing___AForExpr___process_control_inside(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 648;
+  fra.me.line = 711;
   fra.me.meth = LOCATE_syntax___typing___AForExpr___process_control_inside;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:650 */
+  /* syntax/typing.nit:713 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___push(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-  /* ./syntax//typing.nit:651 */
+  /* syntax/typing.nit:714 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:653 */
+  /* syntax/typing.nit:716 */
   CALL_syntax___typing___AForExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:656 */
+  /* syntax/typing.nit:719 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AForExpr___n_block(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:659 */
+  /* syntax/typing.nit:722 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:660 */
+  /* syntax/typing.nit:723 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[1])(fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AForExpr___do_typing[] = "typing::AForExpr::do_typing";
 void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
   val_t REGB0;
@@ -3860,10 +4266,11 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       static val_t once_value_18; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 663;
+  fra.me.line = 726;
   fra.me.meth = LOCATE_syntax___typing___AForExpr___do_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -3874,30 +4281,30 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
   fra.me.REG[7] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:666 */
+  /* syntax/typing.nit:729 */
   fra.me.REG[2] = NEW_Array_standard___collection___array___Array___init();
-  /* ./syntax//typing.nit:667 */
+  /* syntax/typing.nit:730 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AForExpr___n_ids(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[3])(fra.me.REG[3], (&(fra.me)), ((fun_t)OC_syntax___typing___AForExpr___do_typing_1));
-  /* ./syntax//typing.nit:672 */
+  /* syntax/typing.nit:735 */
   ATTR_syntax___typing___AForExpr____variables(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:675 */
+  /* syntax/typing.nit:738 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:676 */
+  /* syntax/typing.nit:739 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label2;
   }
-  /* ./syntax//typing.nit:677 */
+  /* syntax/typing.nit:740 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:679 */
+  /* syntax/typing.nit:742 */
   REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:680 */
+    /* syntax/typing.nit:743 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
     if (!once_value_3) {
       fra.me.REG[5] = BOX_NativeString("Type error: 'for' on a nullable expression.");
@@ -3908,10 +4315,13 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     } else fra.me.REG[5] = once_value_3;
     fra.me.REG[5] = fra.me.REG[5];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4], fra.me.REG[5]);
-    /* ./syntax//typing.nit:681 */
+    /* syntax/typing.nit:744 */
     goto label2;
   }
-  /* ./syntax//typing.nit:685 */
+  /* syntax/typing.nit:746 */
+  fra.me.REG[5] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
+  /* syntax/typing.nit:749 */
   if (!once_value_4) {
     if (!once_value_5) {
       fra.me.REG[5] = BOX_NativeString("iterate");
@@ -3921,17 +4331,17 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       register_static_object(&once_value_5);
     } else fra.me.REG[5] = once_value_5;
     fra.me.REG[5] = fra.me.REG[5];
-    fra.me.REG[5] = CALL_standard___symbol___String___to_symbol(fra.me.REG[5])(fra.me.REG[5]);
+    fra.me.REG[5] = CALL_symbol___String___to_symbol(fra.me.REG[5])(fra.me.REG[5]);
     once_value_4 = fra.me.REG[5];
     register_static_object(&once_value_4);
   } else fra.me.REG[5] = once_value_4;
   fra.me.REG[5] = fra.me.REG[5];
-  /* ./syntax//typing.nit:686 */
+  /* syntax/typing.nit:750 */
   fra.me.REG[4] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = CALL_metamodel___abstractmetamodel___MMLocalClass___has_global_property_by_name(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:687 */
+    /* syntax/typing.nit:751 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
     REGB0 = TAG_Int(3);
     fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
@@ -3957,21 +4367,21 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
     fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4], fra.me.REG[6]);
-    /* ./syntax//typing.nit:688 */
+    /* syntax/typing.nit:752 */
     goto label2;
   }
-  /* ./syntax//typing.nit:690 */
+  /* syntax/typing.nit:754 */
   fra.me.REG[6] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___select_method(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[5]);
-  /* ./syntax//typing.nit:691 */
+  /* syntax/typing.nit:755 */
   fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[5])(fra.me.REG[5]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[7] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[7])(fra.me.REG[7]);
   CALL_syntax___syntax_base___MMGlobalProperty___check_visibility(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[1], fra.me.REG[0], fra.me.REG[4], REGB0);
-  /* ./syntax//typing.nit:692 */
+  /* syntax/typing.nit:756 */
   fra.me.REG[3] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  /* ./syntax//typing.nit:693 */
+  /* syntax/typing.nit:757 */
   fra.me.REG[5] = CALL_parser___parser_nodes___AForExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[5])(fra.me.REG[5]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
@@ -3979,20 +4389,20 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___not_for_self(fra.me.REG[3])(fra.me.REG[3]);
     fra.me.REG[3] = fra.me.REG[5];
   }
-  /* ./syntax//typing.nit:694 */
+  /* syntax/typing.nit:758 */
   REGB0 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[3])(fra.me.REG[3]);
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./syntax//typing.nit:694 */
+    /* syntax/typing.nit:758 */
     REGB2 = REGB1;
   }
   REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
   if (UNTAG_Bool(REGB2)) {
-    /* ./syntax//typing.nit:695 */
+    /* syntax/typing.nit:759 */
     if (!once_value_8) {
       fra.me.REG[5] = BOX_NativeString("Error: 'iterate' incompatible with 'for': require no arguments.");
       REGB2 = TAG_Int(63);
@@ -4002,31 +4412,31 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     } else fra.me.REG[5] = once_value_8;
     fra.me.REG[5] = fra.me.REG[5];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-    /* ./syntax//typing.nit:696 */
+    /* syntax/typing.nit:760 */
     goto label2;
   } else {
-    /* ./syntax//typing.nit:697 */
+    /* syntax/typing.nit:761 */
     fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___closures(fra.me.REG[3])(fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
-    /* ./syntax//typing.nit:697 */
+    /* syntax/typing.nit:761 */
     REGB1 = TAG_Int(1);
     REGB0 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB1));
     if (UNTAG_Bool(REGB0)) {
     } else {
-      /* ./../lib/standard//kernel.nit:210 */
+      /* ../lib/standard/kernel.nit:230 */
       REGB1 = TAG_Bool((REGB2)==(REGB1));
-      /* ./syntax//typing.nit:697 */
+      /* syntax/typing.nit:761 */
       REGB0 = REGB1;
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:698 */
+      /* syntax/typing.nit:762 */
       if (!once_value_9) {
         fra.me.REG[5] = BOX_NativeString("Error: 'iterate' incompatible with 'for': require one closure.");
         REGB0 = TAG_Int(62);
@@ -4036,27 +4446,27 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       } else fra.me.REG[5] = once_value_9;
       fra.me.REG[5] = fra.me.REG[5];
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-      /* ./syntax//typing.nit:699 */
+      /* syntax/typing.nit:763 */
       goto label2;
     }
   }
-  /* ./syntax//typing.nit:701 */
+  /* syntax/typing.nit:765 */
   fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___closures(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[5])(fra.me.REG[5]);
   REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 701);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 765);
   }
   fra.me.REG[5] = CALL_metamodel___static_type___MMClosure___signature(fra.me.REG[5])(fra.me.REG[5]);
   fra.me.REG[3] = fra.me.REG[5];
-  /* ./syntax//typing.nit:702 */
+  /* syntax/typing.nit:766 */
   fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -4065,7 +4475,7 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:703 */
+    /* syntax/typing.nit:767 */
     if (!once_value_10) {
       fra.me.REG[5] = BOX_NativeString("Error: 'iterate' incompatible with 'for': require one procedural closure.");
       REGB0 = TAG_Int(73);
@@ -4075,41 +4485,41 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     } else fra.me.REG[5] = once_value_10;
     fra.me.REG[5] = fra.me.REG[5];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-    /* ./syntax//typing.nit:704 */
+    /* syntax/typing.nit:768 */
     goto label2;
   }
-  /* ./../lib/standard//collection//array.nit:23 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ./syntax//typing.nit:706 */
+  /* syntax/typing.nit:770 */
   REGB1 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[3])(fra.me.REG[3]);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./syntax//typing.nit:706 */
+    /* syntax/typing.nit:770 */
     REGB2 = REGB1;
   }
   REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
   if (UNTAG_Bool(REGB2)) {
-    /* ./syntax//typing.nit:707 */
+    /* syntax/typing.nit:771 */
     REGB2 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[3])(fra.me.REG[3]);
     REGB1 = TAG_Int(1);
     REGB0 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB1));
     if (UNTAG_Bool(REGB0)) {
     } else {
-      /* ./../lib/standard//kernel.nit:210 */
+      /* ../lib/standard/kernel.nit:230 */
       REGB1 = TAG_Bool((REGB2)==(REGB1));
-      /* ./syntax//typing.nit:707 */
+      /* syntax/typing.nit:771 */
       REGB0 = REGB1;
     }
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:708 */
+      /* syntax/typing.nit:772 */
       REGB0 = TAG_Int(7);
       fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_11) {
@@ -4144,14 +4554,14 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       } else fra.me.REG[4] = once_value_13;
       fra.me.REG[4] = fra.me.REG[4];
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-      /* ./syntax//typing.nit:708 */
+      /* syntax/typing.nit:772 */
       fra.me.REG[4] = CALL_standard___string___Object___to_s(REGB0)(REGB0);
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
       if (!once_value_14) {
@@ -4166,7 +4576,7 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
     } else {
-      /* ./syntax//typing.nit:710 */
+      /* syntax/typing.nit:774 */
       REGB0 = TAG_Int(7);
       fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_15) {
@@ -4201,14 +4611,14 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       } else fra.me.REG[4] = once_value_17;
       fra.me.REG[4] = fra.me.REG[4];
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-      /* ./syntax//typing.nit:710 */
+      /* syntax/typing.nit:774 */
       fra.me.REG[4] = CALL_standard___string___Object___to_s(REGB0)(REGB0);
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
       if (!once_value_18) {
@@ -4223,49 +4633,49 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
       fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
     }
-    /* ./syntax//typing.nit:712 */
+    /* syntax/typing.nit:776 */
     goto label2;
   }
-  /* ./syntax//typing.nit:716 */
+  /* syntax/typing.nit:780 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:23 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ./../lib/standard//kernel.nit:335 */
+  /* ../lib/standard/kernel.nit:355 */
   while(1) {
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ./../lib/standard//kernel.nit:335 */
+    /* ../lib/standard/kernel.nit:355 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./syntax//typing.nit:716 */
+      /* syntax/typing.nit:780 */
       REGB2 = REGB0;
-      /* ./../lib/standard//collection//array.nit:241 */
+      /* ../lib/standard/collection/array.nit:278 */
       fra.me.REG[5] = fra.me.REG[2];
       REGB3 = REGB2;
-      /* ./../lib/standard//collection//array.nit:243 */
+      /* ../lib/standard/collection/array.nit:280 */
       REGB4 = TAG_Int(0);
       REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB5)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:216 */
+      /* ../lib/standard/kernel.nit:236 */
       REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-      /* ./../lib/standard//collection//array.nit:243 */
+      /* ../lib/standard/collection/array.nit:280 */
       if (UNTAG_Bool(REGB4)) {
         REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
         }
         REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
         REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -4273,43 +4683,43 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:215 */
+        /* ../lib/standard/kernel.nit:235 */
         REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
       } else {
-        /* ./../lib/standard//collection//array.nit:243 */
-        REGB5 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:280 */
+        REGB5 = TAG_Bool(0);
         REGB4 = REGB5;
       }
       if (UNTAG_Bool(REGB4)) {
       } else {
-        nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
       }
-      /* ./../lib/standard//collection//array.nit:244 */
+      /* ../lib/standard/collection/array.nit:281 */
       fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[5]);
       REGB4 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
       if (UNTAG_Bool(REGB4)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
       }
-      /* ./../lib/standard//collection//array.nit:652 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB3)];
-      /* ./../lib/standard//collection//array.nit:244 */
+      /* ../lib/standard/collection/array.nit:281 */
       goto label19;
       label19: while(0);
-      /* ./syntax//typing.nit:717 */
+      /* syntax/typing.nit:781 */
       fra.me.REG[0] = CALL_metamodel___static_type___MMSignature_____bra(fra.me.REG[3])(fra.me.REG[3], REGB2);
       REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 717);
+        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 781);
       }
       CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[0]);
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB2 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB0 = REGB2;
     } else {
-      /* ./../lib/standard//kernel.nit:335 */
+      /* ../lib/standard/kernel.nit:355 */
       goto label20;
     }
   }
@@ -4328,23 +4738,25 @@ void syntax___typing___AForExpr___do_typing(val_t p0, val_t p1){
     fra.me.meth = LOCATE_syntax___typing___AForExpr___do_typing;
     fra.me.has_broke = 0;
     fra.me.REG_size = 2;
+    fra.me.nitni_local_ref_head = NULL;
     fra.me.REG[0] = NIT_NULL;
     fra.me.REG[1] = NIT_NULL;
     fra.me.closure_ctx = closctx_param;
     fra.me.closure_funs = CREG;
     fra.me.REG[0] = p0;
     CREG[0] = clos_fun0;
-    /* ./syntax//typing.nit:668 */
+    /* syntax/typing.nit:731 */
     fra.me.REG[1] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[0] = NEW_AutoVariable_syntax___syntax_base___AutoVariable___init(fra.me.REG[1], fra.me.REG[0]);
-    /* ./syntax//typing.nit:669 */
+    /* syntax/typing.nit:732 */
     fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___scope_ctx(closctx->REG[1])(closctx->REG[1]);
     CALL_syntax___scope___ScopeContext___add_variable(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-    /* ./syntax//typing.nit:670 */
+    /* syntax/typing.nit:733 */
     CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[2])(closctx->REG[2], fra.me.REG[0]);
     stack_frame_head = fra.me.prev;
     return;
   }
+static const char LOCATE_syntax___typing___AAssertExpr___accept_typing[] = "typing::AAssertExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AAssertExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -4352,31 +4764,35 @@ void syntax___typing___AAssertExpr___accept_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 723;
+  fra.me.line = 787;
   fra.me.meth = LOCATE_syntax___typing___AAssertExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:726 */
+  /* syntax/typing.nit:790 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAssertExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:727 */
+  /* syntax/typing.nit:791 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAssertExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:730 */
+  /* syntax/typing.nit:792 */
+  fra.me.REG[3] = CALL_parser___parser_nodes___AAssertExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_syntax___typing___AExpr___warn_parentheses(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
+  /* syntax/typing.nit:795 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AAssertExpr___n_else(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -4385,70 +4801,75 @@ void syntax___typing___AAssertExpr___accept_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:731 */
+    /* syntax/typing.nit:796 */
     fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-    /* ./syntax//typing.nit:732 */
+    /* syntax/typing.nit:797 */
     fra.me.REG[2] = CALL_parser___parser_nodes___AAssertExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
     CALL_syntax___typing___TypingVisitor___use_if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-    /* ./syntax//typing.nit:733 */
+    /* syntax/typing.nit:798 */
     fra.me.REG[2] = CALL_parser___parser_nodes___AAssertExpr___n_else(fra.me.REG[0])(fra.me.REG[0]);
     CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-    /* ./syntax//typing.nit:734 */
+    /* syntax/typing.nit:799 */
     CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   }
-  /* ./syntax//typing.nit:738 */
+  /* syntax/typing.nit:803 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AAssertExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:739 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:804 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AVarFormExpr___variable[] = "typing::AVarFormExpr::(syntax_base::AVarFormExpr::variable)";
 val_t syntax___typing___AVarFormExpr___variable(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 745;
+  fra.me.line = 810;
   fra.me.meth = LOCATE_syntax___typing___AVarFormExpr___variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:745 */
+  /* syntax/typing.nit:810 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AVarFormExpr____variable(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 745);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 810);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AVarExpr___its_variable[] = "typing::AVarExpr::(typing::AExpr::its_variable)";
 val_t syntax___typing___AVarExpr___its_variable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 749;
+  fra.me.line = 814;
   fra.me.meth = LOCATE_syntax___typing___AVarExpr___its_variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:749 */
+  /* syntax/typing.nit:814 */
   fra.me.REG[0] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AVarExpr___after_typing[] = "typing::AVarExpr::(typing::ANode::after_typing)";
 void syntax___typing___AVarExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -4456,33 +4877,34 @@ void syntax___typing___AVarExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 751;
+  fra.me.line = 816;
   fra.me.meth = LOCATE_syntax___typing___AVarExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:753 */
+  /* syntax/typing.nit:818 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___flow___FlowContext___check_is_set(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[3]);
-  /* ./syntax//typing.nit:754 */
+  /* syntax/typing.nit:819 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:755 */
+  /* syntax/typing.nit:820 */
   fra.me.REG[3] = ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -4494,6 +4916,7 @@ void syntax___typing___AVarExpr___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AVarAssignExpr___after_typing[] = "typing::AVarAssignExpr::(typing::ANode::after_typing)";
 void syntax___typing___AVarAssignExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -4501,10 +4924,11 @@ void syntax___typing___AVarAssignExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 760;
+  fra.me.line = 825;
   fra.me.meth = LOCATE_syntax___typing___AVarAssignExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -4512,27 +4936,27 @@ void syntax___typing___AVarAssignExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:762 */
+  /* syntax/typing.nit:827 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___mark_is_set(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:765 */
+  /* syntax/typing.nit:830 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:766 */
+  /* syntax/typing.nit:831 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:767 */
+  /* syntax/typing.nit:832 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -4545,26 +4969,27 @@ void syntax___typing___AVarAssignExpr___after_typing(val_t p0, val_t p1){
     REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:770 */
+  /* syntax/typing.nit:835 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0], fra.me.REG[2], fra.me.REG[4]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:772 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:837 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AReassignFormExpr___do_rvalue_typing[] = "typing::AReassignFormExpr::do_rvalue_typing";
 val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
   val_t REGB0;
@@ -4577,10 +5002,11 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
     static val_t once_value_6; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 777;
+  fra.me.line = 842;
   fra.me.meth = LOCATE_syntax___typing___AReassignFormExpr___do_rvalue_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -4592,13 +5018,13 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:782 */
+  /* syntax/typing.nit:847 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -4606,17 +5032,17 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:783 */
+    /* syntax/typing.nit:848 */
     fra.me.REG[3] = NIT_NULL;
     goto label1;
   }
-  /* ./syntax//typing.nit:785 */
+  /* syntax/typing.nit:850 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AReassignFormExpr___n_assign_op(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___typing___AAssignOp___method_name(fra.me.REG[4])(fra.me.REG[4]);
-  /* ./syntax//typing.nit:786 */
+  /* syntax/typing.nit:851 */
   REGB0 = TAG_Bool((fra.me.REG[2]!=NIT_NULL) && VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:787 */
+    /* syntax/typing.nit:852 */
     REGB0 = TAG_Int(3);
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_2) {
@@ -4641,21 +5067,21 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
     fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-    /* ./syntax//typing.nit:788 */
+    /* syntax/typing.nit:853 */
     fra.me.REG[3] = NIT_NULL;
     goto label1;
   }
-  /* ./syntax//typing.nit:790 */
+  /* syntax/typing.nit:855 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 790);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 855);
   }
   fra.me.REG[5] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:791 */
+  /* syntax/typing.nit:856 */
   REGB0 = CALL_metamodel___abstractmetamodel___MMLocalClass___has_global_property_by_name(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:792 */
+    /* syntax/typing.nit:857 */
     REGB0 = TAG_Int(5);
     fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_4) {
@@ -4691,22 +5117,22 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
     fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[6]);
-    /* ./syntax//typing.nit:793 */
+    /* syntax/typing.nit:858 */
     fra.me.REG[3] = NIT_NULL;
     goto label1;
   }
-  /* ./syntax//typing.nit:795 */
+  /* syntax/typing.nit:860 */
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalClass___select_method(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-  /* ./syntax//typing.nit:796 */
+  /* syntax/typing.nit:861 */
   fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Bool(false);
+  REGB0 = TAG_Bool(0);
   CALL_syntax___syntax_base___MMGlobalProperty___check_visibility(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1], fra.me.REG[0], fra.me.REG[6], REGB0);
-  /* ./syntax//typing.nit:797 */
+  /* syntax/typing.nit:862 */
   fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  /* ./syntax//typing.nit:798 */
+  /* syntax/typing.nit:863 */
   ATTR_syntax___typing___AReassignFormExpr____assign_method(fra.me.REG[0]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:799 */
+  /* syntax/typing.nit:864 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Int(0);
   fra.me.REG[4] = CALL_metamodel___static_type___MMSignature_____bra(fra.me.REG[2])(fra.me.REG[2], REGB0);
@@ -4717,11 +5143,11 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
     fra.me.REG[3] = NIT_NULL;
     goto label1;
   }
-  /* ./syntax//typing.nit:800 */
+  /* syntax/typing.nit:865 */
   fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 800);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 865);
   }
   fra.me.REG[2] = CALL_metamodel___static_type___MMType___not_for_self(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[3] = fra.me.REG[2];
@@ -4730,32 +5156,35 @@ val_t syntax___typing___AReassignFormExpr___do_rvalue_typing(val_t p0, val_t p1,
   stack_frame_head = fra.me.prev;
   return fra.me.REG[3];
 }
+static const char LOCATE_syntax___typing___AReassignFormExpr___assign_method[] = "typing::AReassignFormExpr::(syntax_base::AReassignFormExpr::assign_method)";
 val_t syntax___typing___AReassignFormExpr___assign_method(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 803;
+  fra.me.line = 868;
   fra.me.meth = LOCATE_syntax___typing___AReassignFormExpr___assign_method;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:803 */
+  /* syntax/typing.nit:868 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AReassignFormExpr____assign_method(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 803);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 868);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AVarReassignExpr___after_typing[] = "typing::AVarReassignExpr::(typing::ANode::after_typing)";
 void syntax___typing___AVarReassignExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -4763,10 +5192,11 @@ void syntax___typing___AVarReassignExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 808;
+  fra.me.line = 873;
   fra.me.meth = LOCATE_syntax___typing___AVarReassignExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -4774,26 +5204,26 @@ void syntax___typing___AVarReassignExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:810 */
+  /* syntax/typing.nit:875 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___flow___FlowContext___check_is_set(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[3]);
-  /* ./syntax//typing.nit:811 */
+  /* syntax/typing.nit:876 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___mark_is_set(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:812 */
+  /* syntax/typing.nit:877 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* ./syntax//typing.nit:813 */
+  /* syntax/typing.nit:878 */
   fra.me.REG[2] = CALL_syntax___typing___AReassignFormExpr___do_rvalue_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:814 */
+  /* syntax/typing.nit:879 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -4803,24 +5233,24 @@ void syntax___typing___AVarReassignExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:817 */
+  /* syntax/typing.nit:882 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:818 */
+  /* syntax/typing.nit:883 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:819 */
+  /* syntax/typing.nit:884 */
   REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -4833,38 +5263,41 @@ void syntax___typing___AVarReassignExpr___after_typing(val_t p0, val_t p1){
     REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[2], fra.me.REG[4]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:822 */
+  /* syntax/typing.nit:887 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AVarFormExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[3], fra.me.REG[2]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:824 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:889 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAssignOp___method_name[] = "typing::AAssignOp::method_name";
 val_t syntax___typing___AAssignOp___method_name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 829;
+  fra.me.line = 894;
   fra.me.meth = LOCATE_syntax___typing___AAssignOp___method_name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./syntax//typing.nit:829 */
-  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 829);
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:894 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 894);
   stack_frame_head = fra.me.prev;
   return NIT_NULL;
 }
+static const char LOCATE_syntax___typing___APlusAssignOp___method_name[] = "typing::APlusAssignOp::(typing::AAssignOp::method_name)";
 val_t syntax___typing___APlusAssignOp___method_name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -4873,13 +5306,14 @@ val_t syntax___typing___APlusAssignOp___method_name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 832;
+  fra.me.line = 897;
   fra.me.meth = LOCATE_syntax___typing___APlusAssignOp___method_name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:832 */
+  /* syntax/typing.nit:897 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("+");
@@ -4889,7 +5323,7 @@ val_t syntax___typing___APlusAssignOp___method_name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -4899,6 +5333,7 @@ val_t syntax___typing___APlusAssignOp___method_name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AMinusAssignOp___method_name[] = "typing::AMinusAssignOp::(typing::AAssignOp::method_name)";
 val_t syntax___typing___AMinusAssignOp___method_name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -4907,13 +5342,14 @@ val_t syntax___typing___AMinusAssignOp___method_name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 835;
+  fra.me.line = 900;
   fra.me.meth = LOCATE_syntax___typing___AMinusAssignOp___method_name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:835 */
+  /* syntax/typing.nit:900 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("-");
@@ -4923,7 +5359,7 @@ val_t syntax___typing___AMinusAssignOp___method_name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -4933,117 +5369,128 @@ val_t syntax___typing___AMinusAssignOp___method_name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASelfExpr___variable[] = "typing::ASelfExpr::(syntax_base::ASelfExpr::variable)";
 val_t syntax___typing___ASelfExpr___variable(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 840;
+  fra.me.line = 905;
   fra.me.meth = LOCATE_syntax___typing___ASelfExpr___variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:840 */
+  /* syntax/typing.nit:905 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___ASelfExpr____variable(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 840);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 905);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ASelfExpr___its_variable[] = "typing::ASelfExpr::(typing::AExpr::its_variable)";
 val_t syntax___typing___ASelfExpr___its_variable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 842;
+  fra.me.line = 907;
   fra.me.meth = LOCATE_syntax___typing___ASelfExpr___its_variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:842 */
+  /* syntax/typing.nit:907 */
   fra.me.REG[0] = CALL_syntax___syntax_base___ASelfExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASelfExpr___after_typing[] = "typing::ASelfExpr::(typing::ANode::after_typing)";
 void syntax___typing___ASelfExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 844;
+  fra.me.line = 909;
   fra.me.meth = LOCATE_syntax___typing___ASelfExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:846 */
+  /* syntax/typing.nit:911 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___ASelfExpr____variable(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:847 */
+  /* syntax/typing.nit:912 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[2] = CALL_syntax___syntax_base___ASelfExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:848 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:913 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASelfExpr___is_self[] = "typing::ASelfExpr::(typing::AExpr::is_self)";
 val_t syntax___typing___ASelfExpr___is_self(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 851;
+  fra.me.line = 916;
   fra.me.meth = LOCATE_syntax___typing___ASelfExpr___is_self;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:851 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:916 */
+  REGB0 = TAG_Bool(1);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AImplicitSelfExpr___is_implicit_self[] = "typing::AImplicitSelfExpr::(typing::AExpr::is_implicit_self)";
 val_t syntax___typing___AImplicitSelfExpr___is_implicit_self(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 855;
+  fra.me.line = 920;
   fra.me.meth = LOCATE_syntax___typing___AImplicitSelfExpr___is_implicit_self;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:855 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:920 */
+  REGB0 = TAG_Bool(1);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___typing___AIfexprExpr___accept_typing[] = "typing::AIfexprExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AIfexprExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -5051,10 +5498,11 @@ void syntax___typing___AIfexprExpr___accept_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 859;
+  fra.me.line = 924;
   fra.me.meth = LOCATE_syntax___typing___AIfexprExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5062,37 +5510,37 @@ void syntax___typing___AIfexprExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:861 */
+  /* syntax/typing.nit:926 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:864 */
+  /* syntax/typing.nit:929 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIfexprExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:865 */
+  /* syntax/typing.nit:930 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIfexprExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:868 */
+  /* syntax/typing.nit:933 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AIfexprExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:871 */
+  /* syntax/typing.nit:936 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AIfexprExpr___n_then(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:874 */
+  /* syntax/typing.nit:939 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:877 */
+  /* syntax/typing.nit:942 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:878 */
+  /* syntax/typing.nit:943 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfexprExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:881 */
+  /* syntax/typing.nit:946 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIfexprExpr___n_else(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___enter_visit_block(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:884 */
+  /* syntax/typing.nit:949 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_syntax___flow___FlowContext___merge_reash(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[4], fra.me.REG[3]);
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:886 */
+  /* syntax/typing.nit:951 */
   REGB0 = TAG_Int(2);
   fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
   fra.me.REG[4] = CALL_parser___parser_nodes___AIfexprExpr___n_then(fra.me.REG[0])(fra.me.REG[0]);
@@ -5100,13 +5548,13 @@ void syntax___typing___AIfexprExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = CALL_parser___parser_nodes___AIfexprExpr___n_else(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_multiexpr(fra.me.REG[1])(fra.me.REG[1], NIT_NULL, fra.me.REG[3]);
-  /* ./syntax//typing.nit:887 */
+  /* syntax/typing.nit:952 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -5116,38 +5564,41 @@ void syntax___typing___AIfexprExpr___accept_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:889 */
+  /* syntax/typing.nit:954 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:890 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:955 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ABoolExpr___after_typing[] = "typing::ABoolExpr::(typing::ANode::after_typing)";
 void syntax___typing___ABoolExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 895;
+  fra.me.line = 960;
   fra.me.meth = LOCATE_syntax___typing___ABoolExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:897 */
+  /* syntax/typing.nit:962 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:898 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:963 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AOrExpr___accept_typing[] = "typing::AOrExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AOrExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -5155,10 +5606,11 @@ void syntax___typing___AOrExpr___accept_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 903;
+  fra.me.line = 968;
   fra.me.meth = LOCATE_syntax___typing___AOrExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5166,22 +5618,22 @@ void syntax___typing___AOrExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:905 */
+  /* syntax/typing.nit:970 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:906 */
+  /* syntax/typing.nit:971 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:907 */
+  /* syntax/typing.nit:972 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:910 */
+  /* syntax/typing.nit:975 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AOrExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:913 */
+  /* syntax/typing.nit:978 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AOrExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_false_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:916 */
+  /* syntax/typing.nit:981 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AOrExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:917 */
+  /* syntax/typing.nit:982 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AOrExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___typing___AExpr___if_false_flow_ctx(fra.me.REG[4])(fra.me.REG[4]);
   REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
@@ -5189,7 +5641,7 @@ void syntax___typing___AOrExpr___accept_typing(val_t p0, val_t p1){
   } else {
     REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -5198,31 +5650,32 @@ void syntax___typing___AOrExpr___accept_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:918 */
+    /* syntax/typing.nit:983 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AOrExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[4] = CALL_syntax___typing___AExpr___if_false_flow_ctx(fra.me.REG[4])(fra.me.REG[4]);
     ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]) = fra.me.REG[4];
   } else {
-    /* ./syntax//typing.nit:920 */
+    /* syntax/typing.nit:985 */
     fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]) = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:923 */
+  /* syntax/typing.nit:988 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:925 */
+  /* syntax/typing.nit:990 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AOrExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:926 */
+  /* syntax/typing.nit:991 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AOrExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:927 */
+  /* syntax/typing.nit:992 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:928 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:993 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAndExpr___accept_typing[] = "typing::AAndExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AAndExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -5230,10 +5683,11 @@ void syntax___typing___AAndExpr___accept_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 933;
+  fra.me.line = 998;
   fra.me.meth = LOCATE_syntax___typing___AAndExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5241,20 +5695,20 @@ void syntax___typing___AAndExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:935 */
+  /* syntax/typing.nit:1000 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:936 */
+  /* syntax/typing.nit:1001 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:939 */
+  /* syntax/typing.nit:1004 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAndExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:942 */
+  /* syntax/typing.nit:1007 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAndExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___TypingVisitor___use_if_true_flow_ctx(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:945 */
+  /* syntax/typing.nit:1010 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAndExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:946 */
+  /* syntax/typing.nit:1011 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAndExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___typing___AExpr___if_true_flow_ctx(fra.me.REG[4])(fra.me.REG[4]);
   REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
@@ -5262,7 +5716,7 @@ void syntax___typing___AAndExpr___accept_typing(val_t p0, val_t p1){
   } else {
     REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -5271,68 +5725,71 @@ void syntax___typing___AAndExpr___accept_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:947 */
+    /* syntax/typing.nit:1012 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AAndExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[4] = CALL_syntax___typing___AExpr___if_true_flow_ctx(fra.me.REG[4])(fra.me.REG[4]);
     ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[4];
   } else {
-    /* ./syntax//typing.nit:949 */
+    /* syntax/typing.nit:1014 */
     fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:952 */
+  /* syntax/typing.nit:1017 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:954 */
+  /* syntax/typing.nit:1019 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAndExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:955 */
+  /* syntax/typing.nit:1020 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAndExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:956 */
+  /* syntax/typing.nit:1021 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:957 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1022 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ANotExpr___after_typing[] = "typing::ANotExpr::(typing::ANode::after_typing)";
 void syntax___typing___ANotExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 962;
+  fra.me.line = 1027;
   fra.me.meth = LOCATE_syntax___typing___ANotExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:964 */
+  /* syntax/typing.nit:1029 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ANotExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:967 */
+  /* syntax/typing.nit:1032 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ANotExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[3]);
   ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:968 */
+  /* syntax/typing.nit:1033 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ANotExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[3]);
   ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:970 */
+  /* syntax/typing.nit:1035 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:971 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1036 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AOrElseExpr___after_typing[] = "typing::AOrElseExpr::(typing::ANode::after_typing)";
 void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -5341,10 +5798,11 @@ void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
     static val_t once_value_1; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 976;
+  fra.me.line = 1041;
   fra.me.meth = LOCATE_syntax___typing___AOrElseExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5354,25 +5812,25 @@ void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:978 */
+  /* syntax/typing.nit:1043 */
   fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:981 */
+  /* syntax/typing.nit:1046 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:982 */
+  /* syntax/typing.nit:1047 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:985 */
+  /* syntax/typing.nit:1050 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:986 */
+  /* syntax/typing.nit:1051 */
   REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:987 */
+    /* syntax/typing.nit:1052 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
     if (!once_value_1) {
-      fra.me.REG[5] = BOX_NativeString("Warning: left operant of a 'or else' is not a nullable type.");
+      fra.me.REG[5] = BOX_NativeString("Warning: left operand of a 'or else' is not a nullable type.");
       REGB0 = TAG_Int(60);
       fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
       once_value_1 = fra.me.REG[5];
@@ -5381,20 +5839,20 @@ void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
     fra.me.REG[5] = fra.me.REG[5];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4], fra.me.REG[5]);
   } else {
-    /* ./syntax//typing.nit:989 */
+    /* syntax/typing.nit:1054 */
     fra.me.REG[5] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[3])(fra.me.REG[3]);
     fra.me.REG[3] = fra.me.REG[5];
   }
-  /* ./syntax//typing.nit:993 */
+  /* syntax/typing.nit:1058 */
   fra.me.REG[5] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[5] = CALL_syntax___typing___AExpr___its_variable(fra.me.REG[5])(fra.me.REG[5]);
-  /* ./syntax//typing.nit:994 */
+  /* syntax/typing.nit:1059 */
   REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -5403,32 +5861,32 @@ void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:995 */
+    /* syntax/typing.nit:1060 */
     fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_none(fra.me.REG[1])(fra.me.REG[1]);
     CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[5], fra.me.REG[6]);
   }
-  /* ./syntax//typing.nit:999 */
+  /* syntax/typing.nit:1064 */
   fra.me.REG[6] = CALL_parser___parser_nodes___AOrElseExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_parser___parser_prod___Visitor___enter_visit(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[6]);
-  /* ./syntax//typing.nit:1000 */
+  /* syntax/typing.nit:1065 */
   fra.me.REG[6] = CALL_parser___parser_nodes___AOrElseExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[6]);
-  /* ./syntax//typing.nit:1003 */
+  /* syntax/typing.nit:1068 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:1006 */
+  /* syntax/typing.nit:1071 */
   REGB0 = TAG_Int(1);
   fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
   fra.me.REG[6] = CALL_parser___parser_nodes___AOrElseExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_multiexpr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[2]);
-  /* ./syntax//typing.nit:1007 */
+  /* syntax/typing.nit:1072 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -5438,143 +5896,155 @@ void syntax___typing___AOrElseExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label2;
   }
-  /* ./syntax//typing.nit:1009 */
+  /* syntax/typing.nit:1074 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1010 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1075 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AIntExpr___after_typing[] = "typing::AIntExpr::(typing::ANode::after_typing)";
 void syntax___typing___AIntExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1015;
+  fra.me.line = 1080;
   fra.me.meth = LOCATE_syntax___typing___AIntExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1017 */
+  /* syntax/typing.nit:1082 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_int(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1018 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1083 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AFloatExpr___after_typing[] = "typing::AFloatExpr::(typing::ANode::after_typing)";
 void syntax___typing___AFloatExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1023;
+  fra.me.line = 1088;
   fra.me.meth = LOCATE_syntax___typing___AFloatExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1025 */
+  /* syntax/typing.nit:1090 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_float(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1026 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1091 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ACharExpr___after_typing[] = "typing::ACharExpr::(typing::ANode::after_typing)";
 void syntax___typing___ACharExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1031;
+  fra.me.line = 1096;
   fra.me.meth = LOCATE_syntax___typing___ACharExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1033 */
+  /* syntax/typing.nit:1098 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_char(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1034 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1099 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AStringFormExpr___after_typing[] = "typing::AStringFormExpr::(typing::ANode::after_typing)";
 void syntax___typing___AStringFormExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1039;
+  fra.me.line = 1104;
   fra.me.meth = LOCATE_syntax___typing___AStringFormExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1041 */
+  /* syntax/typing.nit:1106 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_string(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1042 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1107 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASuperstringExpr___atype[] = "typing::ASuperstringExpr::(syntax_base::ASuperstringExpr::atype)";
 val_t syntax___typing___ASuperstringExpr___atype(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1047;
+  fra.me.line = 1112;
   fra.me.meth = LOCATE_syntax___typing___ASuperstringExpr___atype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1047 */
+  /* syntax/typing.nit:1112 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___ASuperstringExpr____atype(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1047);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1112);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ASuperstringExpr___after_typing[] = "typing::ASuperstringExpr::(typing::ANode::after_typing)";
 void syntax___typing___ASuperstringExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1049;
+  fra.me.line = 1114;
   fra.me.meth = LOCATE_syntax___typing___ASuperstringExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5582,21 +6052,21 @@ void syntax___typing___ASuperstringExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1051 */
+  /* syntax/typing.nit:1116 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_object(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1052 */
+  /* syntax/typing.nit:1117 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_string(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1053 */
+  /* syntax/typing.nit:1118 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:1054 */
+  /* syntax/typing.nit:1119 */
   fra.me.REG[4] = CALL_parser___parser_nodes___ASuperstringExpr___n_exprs(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[4])(fra.me.REG[4], (&(fra.me)), ((fun_t)OC_syntax___typing___ASuperstringExpr___after_typing_1));
-  /* ./syntax//typing.nit:1055 */
+  /* syntax/typing.nit:1120 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_array(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./syntax//typing.nit:1056 */
+  /* syntax/typing.nit:1121 */
   ATTR_syntax___typing___ASuperstringExpr____atype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:1057 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1122 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
@@ -5611,6 +6081,7 @@ void syntax___typing___ASuperstringExpr___after_typing(val_t p0, val_t p1){
     fra.me.meth = LOCATE_syntax___typing___ASuperstringExpr___after_typing;
     fra.me.has_broke = 0;
     fra.me.REG_size = 1;
+    fra.me.nitni_local_ref_head = NULL;
     fra.me.REG[0] = NIT_NULL;
     fra.me.closure_ctx = closctx_param;
     fra.me.closure_funs = CREG;
@@ -5620,29 +6091,32 @@ void syntax___typing___ASuperstringExpr___after_typing(val_t p0, val_t p1){
     stack_frame_head = fra.me.prev;
     return;
   }
+static const char LOCATE_syntax___typing___ANullExpr___after_typing[] = "typing::ANullExpr::(typing::ANode::after_typing)";
 void syntax___typing___ANullExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1062;
+  fra.me.line = 1127;
   fra.me.meth = LOCATE_syntax___typing___ANullExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1064 */
+  /* syntax/typing.nit:1129 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_none(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1065 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1130 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AArrayExpr___after_typing[] = "typing::AArrayExpr::(typing::ANode::after_typing)";
 void syntax___typing___AArrayExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -5650,25 +6124,27 @@ void syntax___typing___AArrayExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1070;
+  fra.me.line = 1135;
   fra.me.meth = LOCATE_syntax___typing___AArrayExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1072 */
+  /* syntax/typing.nit:1137 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AArrayExpr___n_exprs(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[2] = CALL_parser___parser_nodes___AExprs___n_exprs(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_multiexpr(fra.me.REG[1])(fra.me.REG[1], NIT_NULL, fra.me.REG[2]);
-  /* ./syntax//typing.nit:1073 */
+  /* syntax/typing.nit:1138 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -5682,31 +6158,34 @@ void syntax___typing___AArrayExpr___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AArrayExpr___do_typing[] = "typing::AArrayExpr::do_typing";
 void syntax___typing___AArrayExpr___do_typing(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1076;
+  fra.me.line = 1141;
   fra.me.meth = LOCATE_syntax___typing___AArrayExpr___do_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:1078 */
+  /* syntax/typing.nit:1143 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_array(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1079 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1144 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ARangeExpr___after_typing[] = "typing::ARangeExpr::(typing::ANode::after_typing)";
 void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
   val_t REGB0;
@@ -5717,10 +6196,11 @@ void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_4; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1084;
+  fra.me.line = 1149;
   fra.me.meth = LOCATE_syntax___typing___ARangeExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5729,12 +6209,12 @@ void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[5] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1086 */
+  /* syntax/typing.nit:1151 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ARangeExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     fra.me.REG[2] = CALL_parser___parser_nodes___ARangeExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
     REGB1 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
@@ -5744,23 +6224,23 @@ void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1087 */
+  /* syntax/typing.nit:1152 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ARangeExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1088 */
+  /* syntax/typing.nit:1153 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ARangeExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1089 */
+  /* syntax/typing.nit:1154 */
   REGB0 = CALL_metamodel___static_type___MMType_____l(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1090 */
+    /* syntax/typing.nit:1155 */
     fra.me.REG[2] = fra.me.REG[3];
   } else {
-    /* ./syntax//typing.nit:1091 */
+    /* syntax/typing.nit:1156 */
     REGB0 = CALL_metamodel___static_type___MMType_____l(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1092 */
+      /* syntax/typing.nit:1157 */
       REGB0 = TAG_Int(5);
       fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_2) {
@@ -5796,18 +6276,18 @@ void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
       fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
-      /* ./syntax//typing.nit:1093 */
+      /* syntax/typing.nit:1158 */
       goto label1;
     }
   }
-  /* ./syntax//typing.nit:1095 */
+  /* syntax/typing.nit:1160 */
   fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_discrete(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1096 */
+  /* syntax/typing.nit:1161 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ARangeExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[4]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     fra.me.REG[3] = CALL_parser___parser_nodes___ARangeExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
     REGB1 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[4]);
@@ -5817,51 +6297,56 @@ void syntax___typing___ARangeExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1097 */
+  /* syntax/typing.nit:1162 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_range(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1098 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1163 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASuperExpr___init_in_superclass[] = "typing::ASuperExpr::(syntax_base::ASuperExpr::init_in_superclass)";
 val_t syntax___typing___ASuperExpr___init_in_superclass(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1103;
+  fra.me.line = 1168;
   fra.me.meth = LOCATE_syntax___typing___ASuperExpr___init_in_superclass;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1103 */
+  /* syntax/typing.nit:1168 */
   fra.me.REG[0] = ATTR_syntax___typing___ASuperExpr____init_in_superclass(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASuperExpr___compute_raw_arguments[] = "typing::ASuperExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ASuperExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1104;
+  fra.me.line = 1169;
   fra.me.meth = LOCATE_syntax___typing___ASuperExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1104 */
+  /* syntax/typing.nit:1169 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ASuperExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASuperExpr___after_typing[] = "typing::ASuperExpr::(typing::ANode::after_typing)";
 void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[9];} fra;
   val_t REGB0;
@@ -5881,10 +6366,11 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_13; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1105;
+  fra.me.line = 1170;
   fra.me.meth = LOCATE_syntax___typing___ASuperExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 10;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -5897,51 +6383,51 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[9] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1105 */
+  /* syntax/typing.nit:1170 */
   fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1107 */
+  /* syntax/typing.nit:1172 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMLocalProperty___prhe(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[3] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1108 */
+  /* syntax/typing.nit:1173 */
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1109 */
+    /* syntax/typing.nit:1174 */
     fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
     CALL_metamodel___abstractmetamodel___MMLocalProperty___need_super__eq(fra.me.REG[4])(fra.me.REG[4], REGB0);
   } else {
-    /* ./syntax//typing.nit:1110 */
+    /* syntax/typing.nit:1175 */
     fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
     REGB0 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[4])(fra.me.REG[4]);
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1111 */
+      /* syntax/typing.nit:1176 */
       fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[1])(fra.me.REG[1]);
       fra.me.REG[5] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
       fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(fra.me.REG[5])(fra.me.REG[5]);
       fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalClass___super_methods_named(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      /* ./../lib/standard//collection//array.nit:229 */
+      /* ../lib/standard/collection/array.nit:266 */
       fra.me.REG[4] = fra.me.REG[5];
-      /* ./../lib/standard//collection//array.nit:232 */
+      /* ../lib/standard/collection/array.nit:269 */
       REGB0 = TAG_Int(0);
-      /* ./../lib/standard//collection//array.nit:233 */
+      /* ../lib/standard/collection/array.nit:270 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:234 */
+      /* ../lib/standard/collection/array.nit:271 */
       fra.me.REG[6] = ATTR_standard___collection___array___Array____items(fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       while(1) {
-        /* ./../lib/standard//collection//array.nit:23 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
         }
         REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
         REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -5949,23 +6435,23 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:215 */
+        /* ../lib/standard/kernel.nit:235 */
         REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         if (UNTAG_Bool(REGB1)) {
-          /* ./../lib/standard//collection//array.nit:236 */
+          /* ../lib/standard/collection/array.nit:273 */
           REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
           }
-          /* ./../lib/standard//collection//array.nit:652 */
+          /* ../lib/standard/collection/array.nit:724 */
           fra.me.REG[7] = ((Nit_NativeArray)fra.me.REG[6])->val[UNTAG_Int(REGB0)];
-          /* ./syntax//typing.nit:1113 */
+          /* syntax/typing.nit:1178 */
           fra.me.REG[8] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
           REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[8])(fra.me.REG[8]);
           REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
           if (UNTAG_Bool(REGB1)) {
-            /* ./syntax//typing.nit:1114 */
+            /* syntax/typing.nit:1179 */
             REGB1 = TAG_Int(5);
             fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
             if (!once_value_1) {
@@ -6003,28 +6489,28 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
             fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
             CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[8]);
           } else {
-            /* ./syntax//typing.nit:1116 */
+            /* syntax/typing.nit:1181 */
             fra.me.REG[8] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[1])(fra.me.REG[1]);
             fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
             fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalClass_____bra(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
             CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
           }
-          /* ./../lib/standard//collection//array.nit:237 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB1 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:218 */
+          /* ../lib/standard/kernel.nit:238 */
           REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-          /* ./../lib/standard//collection//array.nit:237 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB0 = REGB1;
         } else {
-          /* ./../lib/standard//collection//array.nit:235 */
+          /* ../lib/standard/collection/array.nit:272 */
           goto label4;
         }
       }
       label4: while(0);
-      /* ./syntax//typing.nit:1119 */
+      /* syntax/typing.nit:1184 */
       REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[3])(fra.me.REG[3]);
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1120 */
+        /* syntax/typing.nit:1185 */
         REGB0 = TAG_Int(3);
         fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
         if (!once_value_5) {
@@ -6051,28 +6537,28 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[4]);
         fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[6]);
-        /* ./syntax//typing.nit:1121 */
+        /* syntax/typing.nit:1186 */
         goto label7;
       } else {
-        /* ./../lib/standard//collection//array.nit:23 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
         if (UNTAG_Bool(REGB0)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
         }
         REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-        /* ./syntax//typing.nit:1122 */
+        /* syntax/typing.nit:1187 */
         REGB1 = TAG_Int(1);
         REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB2)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:217 */
+        /* ../lib/standard/kernel.nit:237 */
         REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
-        /* ./syntax//typing.nit:1122 */
+        /* syntax/typing.nit:1187 */
         if (UNTAG_Bool(REGB1)) {
-          /* ./syntax//typing.nit:1123 */
+          /* syntax/typing.nit:1188 */
           REGB1 = TAG_Int(5);
           fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
           if (!once_value_8) {
@@ -6118,24 +6604,25 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
           CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[4]);
           fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
           CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[6]);
-          /* ./syntax//typing.nit:1124 */
+          /* syntax/typing.nit:1189 */
           goto label7;
         }
       }
-      /* ./syntax//typing.nit:1126 */
+      /* syntax/typing.nit:1191 */
       fra.me.REG[5] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[5])(fra.me.REG[5]);
-      /* ./syntax//typing.nit:1127 */
+      /* syntax/typing.nit:1192 */
       REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[5], COLOR_metamodel___abstractmetamodel___MMMethod, ID_metamodel___abstractmetamodel___MMMethod)) /*cast MMMethod*/;
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1127);
+        nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1192);
       }
-      /* ./syntax//typing.nit:1128 */
+      /* syntax/typing.nit:1193 */
       ATTR_syntax___typing___ASuperExpr____init_in_superclass(fra.me.REG[2]) = fra.me.REG[5];
-      /* ./syntax//typing.nit:1129 */
+      /* syntax/typing.nit:1194 */
       CALL_syntax___typing___ASuperInitCall___register_super_init_call(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[5]);
-      /* ./syntax//typing.nit:1130 */
+      /* syntax/typing.nit:1195 */
       fra.me.REG[6] = CALL_parser___parser_nodes___ASuperExpr___n_args(fra.me.REG[2])(fra.me.REG[2]);
+      fra.me.REG[6] = CALL_parser___parser_nodes___AExprs___n_exprs(fra.me.REG[6])(fra.me.REG[6]);
       REGB1 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[6])(fra.me.REG[6]);
       REGB0 = TAG_Int(0);
       REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -6143,27 +6630,27 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:217 */
+      /* ../lib/standard/kernel.nit:237 */
       REGB0 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB0));
-      /* ./syntax//typing.nit:1130 */
+      /* syntax/typing.nit:1195 */
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1131 */
+        /* syntax/typing.nit:1196 */
         fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[1])(fra.me.REG[1]);
         fra.me.REG[6] = CALL_syntax___syntax_base___Variable___stype(fra.me.REG[6])(fra.me.REG[6]);
         REGB0 = TAG_Bool((fra.me.REG[6]!=NIT_NULL) && VAL_ISA(fra.me.REG[6], COLOR_metamodel___static_type___MMType, ID_metamodel___static_type___MMType)) /*cast MMType*/;
         if (UNTAG_Bool(REGB0)) {
         } else {
-          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1131);
+          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1196);
         }
-        REGB0 = TAG_Bool(true);
+        REGB0 = TAG_Bool(1);
         fra.me.REG[6] = CALL_syntax___typing___AAbsSendExpr___get_signature(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[6], fra.me.REG[5], REGB0);
-        /* ./syntax//typing.nit:1132 */
+        /* syntax/typing.nit:1197 */
         fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(fra.me.REG[5])(fra.me.REG[5]);
         fra.me.REG[4] = CALL_syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(fra.me.REG[2])(fra.me.REG[2]);
         CALL_syntax___typing___AAbsAbsSendExpr___process_signature(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[6], fra.me.REG[5], fra.me.REG[4]);
       }
     } else {
-      /* ./syntax//typing.nit:1135 */
+      /* syntax/typing.nit:1200 */
       REGB0 = TAG_Int(3);
       fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_12) {
@@ -6189,22 +6676,22 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
       fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
-      /* ./syntax//typing.nit:1136 */
+      /* syntax/typing.nit:1201 */
       goto label7;
     }
   }
-  /* ./syntax//typing.nit:1139 */
+  /* syntax/typing.nit:1204 */
   fra.me.REG[4] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[5] = CALL_syntax___syntax_base___Variable___stype(fra.me.REG[5])(fra.me.REG[5]);
   REGB0 = TAG_Bool((fra.me.REG[5]!=NIT_NULL) && VAL_ISA(fra.me.REG[5], COLOR_metamodel___static_type___MMType, ID_metamodel___static_type___MMType)) /*cast MMType*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1139);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1204);
   }
   REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1139);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1204);
   }
   fra.me.REG[5] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
   fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[5])(fra.me.REG[5]);
@@ -6213,7 +6700,7 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
   } else {
     REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -6222,28 +6709,28 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1140 */
+    /* syntax/typing.nit:1205 */
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___init();
-    /* ./syntax//typing.nit:1141 */
+    /* syntax/typing.nit:1206 */
     fra.me.REG[4] = NIT_NULL;
-    /* ./../lib/standard//collection//array.nit:232 */
+    /* ../lib/standard/collection/array.nit:269 */
     REGB0 = TAG_Int(0);
-    /* ./../lib/standard//collection//array.nit:233 */
+    /* ../lib/standard/collection/array.nit:270 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:234 */
+    /* ../lib/standard/collection/array.nit:271 */
     fra.me.REG[6] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     while(1) {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -6251,56 +6738,56 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       if (UNTAG_Bool(REGB1)) {
-        /* ./../lib/standard//collection//array.nit:236 */
+        /* ../lib/standard/collection/array.nit:273 */
         REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[7] = ((Nit_NativeArray)fra.me.REG[6])->val[UNTAG_Int(REGB0)];
-        /* ./syntax//typing.nit:1143 */
+        /* syntax/typing.nit:1208 */
         REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[7], COLOR_metamodel___abstractmetamodel___MMMethod, ID_metamodel___abstractmetamodel___MMMethod)) /*cast MMMethod*/;
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1143);
+          nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1208);
         }
-        /* ./syntax//typing.nit:1144 */
+        /* syntax/typing.nit:1209 */
         fra.me.REG[8] = CALL_syntax___typing___TypingVisitor___self_var(fra.me.REG[1])(fra.me.REG[1]);
         fra.me.REG[8] = CALL_syntax___syntax_base___Variable___stype(fra.me.REG[8])(fra.me.REG[8]);
         REGB1 = TAG_Bool((fra.me.REG[8]!=NIT_NULL) && VAL_ISA(fra.me.REG[8], COLOR_metamodel___static_type___MMType, ID_metamodel___static_type___MMType)) /*cast MMType*/;
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1144);
+          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1209);
         }
         fra.me.REG[8] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
         fra.me.REG[8] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[8])(fra.me.REG[8]);
         fra.me.REG[7] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
         REGB1 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1144);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1209);
         }
         fra.me.REG[7] = CALL_metamodel___static_type___MMType___for_module(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
         fra.me.REG[8] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
         fra.me.REG[8] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[8])(fra.me.REG[8]);
         REGB1 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1144);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1209);
         }
         fra.me.REG[8] = CALL_metamodel___static_type___MMSignature___recv(fra.me.REG[8])(fra.me.REG[8]);
         fra.me.REG[8] = CALL_metamodel___static_type___MMType___adapt_to(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
-        /* ./syntax//typing.nit:1145 */
+        /* syntax/typing.nit:1210 */
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[8]);
-        /* ./syntax//typing.nit:1146 */
+        /* syntax/typing.nit:1211 */
         REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
           REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
-            REGB2 = TAG_Bool(false);
+            REGB2 = TAG_Bool(0);
             REGB1 = REGB2;
           } else {
             REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -6308,49 +6795,49 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
           }
         }
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(true);
+          REGB1 = TAG_Bool(1);
         } else {
           REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
-            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1146);
+            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1211);
           }
           REGB2 = CALL_metamodel___static_type___MMType_____l(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[8]);
           REGB1 = REGB2;
         }
         if (UNTAG_Bool(REGB1)) {
-          /* ./syntax//typing.nit:1147 */
+          /* syntax/typing.nit:1212 */
           fra.me.REG[4] = fra.me.REG[8];
         }
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB1 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB0 = REGB1;
       } else {
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         goto label14;
       }
     }
     label14: while(0);
-    /* ./../lib/standard//collection//array.nit:232 */
+    /* ../lib/standard/collection/array.nit:269 */
     REGB0 = TAG_Int(0);
-    /* ./../lib/standard//collection//array.nit:233 */
+    /* ../lib/standard/collection/array.nit:270 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
-    /* ./../lib/standard//collection//array.nit:234 */
+    /* ../lib/standard/collection/array.nit:271 */
     fra.me.REG[6] = ATTR_standard___collection___array___Array____items(fra.me.REG[5]);
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     while(1) {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -6358,108 +6845,781 @@ void syntax___typing___ASuperExpr___after_typing(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       if (UNTAG_Bool(REGB1)) {
-        /* ./../lib/standard//collection//array.nit:236 */
+        /* ../lib/standard/collection/array.nit:273 */
         REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[6])->val[UNTAG_Int(REGB0)];
-        /* ./syntax//typing.nit:1151 */
+        /* syntax/typing.nit:1216 */
         REGB1 = TAG_Bool(fra.me.REG[4]!=NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1151);
+          nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1216);
         }
         CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], fra.me.REG[4]);
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB1 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB0 = REGB1;
       } else {
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         goto label15;
       }
     }
     label15: while(0);
-    /* ./syntax//typing.nit:1153 */
+    /* syntax/typing.nit:1218 */
     ATTR_syntax___typing___AExpr____stype(fra.me.REG[2]) = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:1155 */
+  /* syntax/typing.nit:1220 */
+  fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+  /* syntax/typing.nit:1221 */
+  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_syntax___syntax_base___MMSrcMethod, ID_syntax___syntax_base___MMSrcMethod)) /*cast MMSrcMethod*/;
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1221);
+  }
+  /* syntax/typing.nit:1222 */
+  ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[2]) = fra.me.REG[1];
+  /* syntax/typing.nit:1223 */
+  REGB0 = TAG_Bool(1);
+  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB0;
+  label7: while(0);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AExternCall___target_class_name[] = "typing::AExternCall::target_class_name";
+val_t syntax___typing___AExternCall___target_class_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1228;
+  fra.me.meth = LOCATE_syntax___typing___AExternCall___target_class_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1228 */
+  fra.me.REG[0] = NIT_NULL;
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AExternCall___target_method_name[] = "typing::AExternCall::target_method_name";
+val_t syntax___typing___AExternCall___target_method_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1229;
+  fra.me.meth = LOCATE_syntax___typing___AExternCall___target_method_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 0;
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1229 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1229);
+  stack_frame_head = fra.me.prev;
+  return NIT_NULL;
+}
+static const char LOCATE_syntax___typing___AExternCall___after_typing[] = "typing::AExternCall::(typing::ANode::after_typing)";
+void syntax___typing___AExternCall___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+      static val_t once_value_1; /* Once value */
+      static val_t once_value_2; /* Once value */
+      static val_t once_value_4; /* Once value */
+      static val_t once_value_5; /* Once value */
+    static val_t once_value_6; /* Once value */
+    static val_t once_value_7; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1231;
+  fra.me.meth = LOCATE_syntax___typing___AExternCall___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[3] = NIT_NULL;
+  fra.me.REG[4] = NIT_NULL;
+  fra.me.REG[5] = NIT_NULL;
+  fra.me.REG[6] = NIT_NULL;
+  fra.me.REG[7] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:1231 */
+  fra.me.REG[2] = fra.me.REG[0];
+  /* syntax/typing.nit:1233 */
+  fra.me.REG[3] = CALL_syntax___typing___AExternCall___target_class_name(fra.me.REG[2])(fra.me.REG[2]);
+  /* syntax/typing.nit:1234 */
+  fra.me.REG[4] = CALL_syntax___typing___AExternCall___target_method_name(fra.me.REG[2])(fra.me.REG[2]);
+  /* syntax/typing.nit:1241 */
+  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1242 */
+    fra.me.REG[5] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+    fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMLocalProperty___local_class(fra.me.REG[5])(fra.me.REG[5]);
+  } else {
+    /* syntax/typing.nit:1244 */
+    fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+    fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[6])(fra.me.REG[6]);
+    REGB0 = CALL_metamodel___abstractmetamodel___MMModule___has_global_class_named(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
+    if (UNTAG_Bool(REGB0)) {
+      /* syntax/typing.nit:1245 */
+      fra.me.REG[6] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+      fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[6])(fra.me.REG[6]);
+      fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMModule___global_class_named(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
+      /* syntax/typing.nit:1246 */
+      fra.me.REG[7] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+      fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[7])(fra.me.REG[7]);
+      fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMModule_____bra(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[6]);
+      fra.me.REG[5] = fra.me.REG[6];
+    } else {
+      /* syntax/typing.nit:1248 */
+      REGB0 = TAG_Int(3);
+      fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+      if (!once_value_1) {
+        fra.me.REG[7] = BOX_NativeString("Error: class ");
+        REGB0 = TAG_Int(13);
+        fra.me.REG[7] = NEW_String_standard___string___String___with_native(fra.me.REG[7], REGB0);
+        once_value_1 = fra.me.REG[7];
+        register_static_object(&once_value_1);
+      } else fra.me.REG[7] = once_value_1;
+      fra.me.REG[7] = fra.me.REG[7];
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
+      REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+      if (UNTAG_Bool(REGB0)) {
+        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1248);
+      }
+      fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
+      if (!once_value_2) {
+        fra.me.REG[3] = BOX_NativeString(", not found.");
+        REGB0 = TAG_Int(12);
+        fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+        once_value_2 = fra.me.REG[3];
+        register_static_object(&once_value_2);
+      } else fra.me.REG[3] = once_value_2;
+      fra.me.REG[3] = fra.me.REG[3];
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
+      fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
+      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[6]);
+      /* syntax/typing.nit:1249 */
+      goto label3;
+    }
+  }
+  /* syntax/typing.nit:1253 */
+  REGB0 = CALL_metamodel___abstractmetamodel___MMLocalClass___has_global_property_by_name(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1254 */
+    fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalClass___get_property_by_name(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
+    /* syntax/typing.nit:1256 */
+    fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalClass_____bra(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
+    /* syntax/typing.nit:1258 */
+    REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[6], COLOR_metamodel___abstractmetamodel___MMMethod, ID_metamodel___abstractmetamodel___MMMethod)) /*cast MMMethod*/;
+    if (UNTAG_Bool(REGB0)) {
+    } else {
+      /* syntax/typing.nit:1261 */
+      REGB0 = TAG_Int(3);
+      fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+      if (!once_value_4) {
+        fra.me.REG[7] = BOX_NativeString("Error: property ");
+        REGB0 = TAG_Int(16);
+        fra.me.REG[7] = NEW_String_standard___string___String___with_native(fra.me.REG[7], REGB0);
+        once_value_4 = fra.me.REG[7];
+        register_static_object(&once_value_4);
+      } else fra.me.REG[7] = once_value_4;
+      fra.me.REG[7] = fra.me.REG[7];
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
+      fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
+      if (!once_value_5) {
+        fra.me.REG[7] = BOX_NativeString(" is not a method.");
+        REGB0 = TAG_Int(17);
+        fra.me.REG[7] = NEW_String_standard___string___String___with_native(fra.me.REG[7], REGB0);
+        once_value_5 = fra.me.REG[7];
+        register_static_object(&once_value_5);
+      } else fra.me.REG[7] = once_value_5;
+      fra.me.REG[7] = fra.me.REG[7];
+      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
+      fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+      CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
+      /* syntax/typing.nit:1262 */
+      goto label3;
+    }
+  } else {
+    /* syntax/typing.nit:1265 */
+    REGB0 = TAG_Int(3);
+    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+    if (!once_value_6) {
+      fra.me.REG[7] = BOX_NativeString("Error: property ");
+      REGB0 = TAG_Int(16);
+      fra.me.REG[7] = NEW_String_standard___string___String___with_native(fra.me.REG[7], REGB0);
+      once_value_6 = fra.me.REG[7];
+      register_static_object(&once_value_6);
+    } else fra.me.REG[7] = once_value_6;
+    fra.me.REG[7] = fra.me.REG[7];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    if (!once_value_7) {
+      fra.me.REG[4] = BOX_NativeString(" not found in target class.");
+      REGB0 = TAG_Int(27);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
+      once_value_7 = fra.me.REG[4];
+      register_static_object(&once_value_7);
+    } else fra.me.REG[4] = once_value_7;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
+    /* syntax/typing.nit:1266 */
+    goto label3;
+  }
+  /* syntax/typing.nit:1269 */
+  fra.me.REG[6] = NEW_MMExplicitImport_metamodel___abstractmetamodel___MMExplicitImport___init(fra.me.REG[5], fra.me.REG[6]);
+  /* syntax/typing.nit:1270 */
+  fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_syntax___syntax_base___MMSrcMethod, ID_syntax___syntax_base___MMSrcMethod)) /*cast MMSrcMethod*/;
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1270);
+  }
+  fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMMethod___explicit_imports(fra.me.REG[1])(fra.me.REG[1]);
+  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[6]);
+  label3: while(0);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___ALocalPropExternCall___target_class_name[] = "typing::ALocalPropExternCall::(typing::AExternCall::target_class_name)";
+val_t syntax___typing___ALocalPropExternCall___target_class_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1275;
+  fra.me.meth = LOCATE_syntax___typing___ALocalPropExternCall___target_class_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1275 */
+  fra.me.REG[0] = NIT_NULL;
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___ALocalPropExternCall___target_method_name[] = "typing::ALocalPropExternCall::(typing::AExternCall::target_method_name)";
+val_t syntax___typing___ALocalPropExternCall___target_method_name(val_t p0){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1276;
+  fra.me.meth = LOCATE_syntax___typing___ALocalPropExternCall___target_method_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1276 */
+  fra.me.REG[1] = fra.me.REG[0];
+  fra.me.REG[1] = CALL_parser___parser_nodes___ALocalPropExternCall___n_methid(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[1] = CALL_syntax___syntax_base___AMethid___name(fra.me.REG[1])(fra.me.REG[1]);
+  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_symbol___Symbol, ID_symbol___Symbol)) /*cast Symbol*/;
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1276);
+  }
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[1];
+}
+static const char LOCATE_syntax___typing___ASuperExternCall___after_typing[] = "typing::ASuperExternCall::(typing::ANode::after_typing)";
+void syntax___typing___ASuperExternCall___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
+  val_t REGB0;
+  val_t tmp;
+    static val_t once_value_1; /* Once value */
+    static val_t once_value_2; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1280;
+  fra.me.meth = LOCATE_syntax___typing___ASuperExternCall___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[3] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:1282 */
+  fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMLocalProperty___prhe(fra.me.REG[2])(fra.me.REG[2]);
+  fra.me.REG[2] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[2])(fra.me.REG[2]);
+  /* syntax/typing.nit:1283 */
+  REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[2])(fra.me.REG[2]);
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1284 */
+    fra.me.REG[2] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+    REGB0 = TAG_Bool(1);
+    CALL_metamodel___abstractmetamodel___MMLocalProperty___need_super__eq(fra.me.REG[2])(fra.me.REG[2], REGB0);
+  } else {
+    /* syntax/typing.nit:1286 */
+    REGB0 = TAG_Int(3);
+    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+    if (!once_value_1) {
+      fra.me.REG[3] = BOX_NativeString("Error: No super method to call for ");
+      REGB0 = TAG_Int(35);
+      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+      once_value_1 = fra.me.REG[3];
+      register_static_object(&once_value_1);
+    } else fra.me.REG[3] = once_value_1;
+    fra.me.REG[3] = fra.me.REG[3];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
+    fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
+    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
+    if (!once_value_2) {
+      fra.me.REG[3] = BOX_NativeString(".");
+      REGB0 = TAG_Int(1);
+      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+      once_value_2 = fra.me.REG[3];
+      register_static_object(&once_value_2);
+    } else fra.me.REG[3] = once_value_2;
+    fra.me.REG[3] = fra.me.REG[3];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
+    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
+    /* syntax/typing.nit:1287 */
+    goto label3;
+  }
+  label3: while(0);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_syntax___typing___AFullPropExternCall___target_class_name[] = "typing::AFullPropExternCall::(typing::AExternCall::target_class_name)";
+val_t syntax___typing___AFullPropExternCall___target_class_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1293;
+  fra.me.meth = LOCATE_syntax___typing___AFullPropExternCall___target_class_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1293 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AFullPropExternCall___n_classid(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AFullPropExternCall___target_method_name[] = "typing::AFullPropExternCall::(typing::AExternCall::target_method_name)";
+val_t syntax___typing___AFullPropExternCall___target_method_name(val_t p0){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1294;
+  fra.me.meth = LOCATE_syntax___typing___AFullPropExternCall___target_method_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1294 */
+  fra.me.REG[1] = fra.me.REG[0];
+  fra.me.REG[1] = CALL_parser___parser_nodes___AFullPropExternCall___n_methid(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[1] = CALL_syntax___syntax_base___AMethid___name(fra.me.REG[1])(fra.me.REG[1]);
+  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_symbol___Symbol, ID_symbol___Symbol)) /*cast Symbol*/;
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1294);
+  }
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[1];
+}
+static const char LOCATE_syntax___typing___AInitPropExternCall___target_class_name[] = "typing::AInitPropExternCall::(typing::AExternCall::target_class_name)";
+val_t syntax___typing___AInitPropExternCall___target_class_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1298;
+  fra.me.meth = LOCATE_syntax___typing___AInitPropExternCall___target_class_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1298 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AInitPropExternCall___n_classid(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AInitPropExternCall___target_method_name[] = "typing::AInitPropExternCall::(typing::AExternCall::target_method_name)";
+val_t syntax___typing___AInitPropExternCall___target_method_name(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  static val_t once_value_1; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1299;
+  fra.me.meth = LOCATE_syntax___typing___AInitPropExternCall___target_method_name;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1299 */
+  if (!once_value_1) {
+    fra.me.REG[0] = BOX_NativeString("init");
+    REGB0 = TAG_Int(4);
+    fra.me.REG[0] = NEW_String_standard___string___String___with_native(fra.me.REG[0], REGB0);
+    once_value_1 = fra.me.REG[0];
+    register_static_object(&once_value_1);
+  } else fra.me.REG[0] = once_value_1;
+  fra.me.REG[0] = fra.me.REG[0];
+  fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+  goto label2;
+  label2: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___ACastExternCall___from_type[] = "typing::ACastExternCall::from_type";
+val_t syntax___typing___ACastExternCall___from_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1303;
+  fra.me.meth = LOCATE_syntax___typing___ACastExternCall___from_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 0;
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1303 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1303);
+  stack_frame_head = fra.me.prev;
+  return NIT_NULL;
+}
+static const char LOCATE_syntax___typing___ACastExternCall___to_type[] = "typing::ACastExternCall::to_type";
+val_t syntax___typing___ACastExternCall___to_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1304;
+  fra.me.meth = LOCATE_syntax___typing___ACastExternCall___to_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 0;
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1304 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1304);
+  stack_frame_head = fra.me.prev;
+  return NIT_NULL;
+}
+static const char LOCATE_syntax___typing___ACastExternCall___after_typing[] = "typing::ACastExternCall::(typing::ANode::after_typing)";
+void syntax___typing___ACastExternCall___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+    static val_t once_value_1; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1306;
+  fra.me.meth = LOCATE_syntax___typing___ACastExternCall___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[3] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:1308 */
+  fra.me.REG[2] = CALL_syntax___typing___ACastExternCall___from_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[3] = CALL_syntax___typing___ACastExternCall___to_type(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
+    REGB0 = REGB1;
+  }
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1310 */
+    if (!once_value_1) {
+      fra.me.REG[3] = BOX_NativeString("Attepting to cast from and to the same type.");
+      REGB0 = TAG_Int(44);
+      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+      once_value_1 = fra.me.REG[3];
+      register_static_object(&once_value_1);
+    } else fra.me.REG[3] = once_value_1;
+    fra.me.REG[3] = fra.me.REG[3];
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
+  }
+  /* syntax/typing.nit:1313 */
+  fra.me.REG[3] = CALL_syntax___typing___ACastExternCall___from_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[2] = CALL_syntax___typing___ACastExternCall___to_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[2] = NEW_MMImportedCast_metamodel___static_type___MMImportedCast___init(fra.me.REG[3], fra.me.REG[2]);
+  /* syntax/typing.nit:1314 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1156 */
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_syntax___syntax_base___MMSrcMethod, ID_syntax___syntax_base___MMSrcMethod)) /*cast MMSrcMethod*/;
+  /* syntax/typing.nit:1315 */
+  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___abstractmetamodel___MMMethod, ID_metamodel___abstractmetamodel___MMMethod)) /*cast MMMethod*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1156);
+    nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1315);
   }
-  /* ./syntax//typing.nit:1157 */
-  ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[2]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1158 */
-  REGB0 = TAG_Bool(true);
-  ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB0;
-  label7: while(0);
+  /* syntax/typing.nit:1316 */
+  fra.me.REG[1] = CALL_metamodel___static_type___MMMethod___explicit_casts(fra.me.REG[1])(fra.me.REG[1]);
+  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ACastAsExternCall___from_type[] = "typing::ACastAsExternCall::(typing::ACastExternCall::from_type)";
+val_t syntax___typing___ACastAsExternCall___from_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1321;
+  fra.me.meth = LOCATE_syntax___typing___ACastAsExternCall___from_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1321 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___ACastAsExternCall___n_from_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___ACastAsExternCall___to_type[] = "typing::ACastAsExternCall::(typing::ACastExternCall::to_type)";
+val_t syntax___typing___ACastAsExternCall___to_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1322;
+  fra.me.meth = LOCATE_syntax___typing___ACastAsExternCall___to_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1322 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___ACastAsExternCall___n_to_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AAsNullableExternCall___from_type[] = "typing::AAsNullableExternCall::(typing::ACastExternCall::from_type)";
+val_t syntax___typing___AAsNullableExternCall___from_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1326;
+  fra.me.meth = LOCATE_syntax___typing___AAsNullableExternCall___from_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1326 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AAsNullableExternCall___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AAsNullableExternCall___to_type[] = "typing::AAsNullableExternCall::(typing::ACastExternCall::to_type)";
+val_t syntax___typing___AAsNullableExternCall___to_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1327;
+  fra.me.meth = LOCATE_syntax___typing___AAsNullableExternCall___to_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1327 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AAsNullableExternCall___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_metamodel___static_type___MMType___as_nullable(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AAsNotNullableExternCall___from_type[] = "typing::AAsNotNullableExternCall::(typing::ACastExternCall::from_type)";
+val_t syntax___typing___AAsNotNullableExternCall___from_type(val_t p0){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1331;
+  fra.me.meth = LOCATE_syntax___typing___AAsNotNullableExternCall___from_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1333 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AAsNotNullableExternCall___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  /* syntax/typing.nit:1334 */
+  REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[0])(fra.me.REG[0]);
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1336 */
+    fra.me.REG[1] = fra.me.REG[0];
+    goto label1;
+  } else {
+    /* syntax/typing.nit:1338 */
+    fra.me.REG[0] = CALL_metamodel___static_type___MMType___as_nullable(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[1] = fra.me.REG[0];
+    goto label1;
+  }
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[1];
+}
+static const char LOCATE_syntax___typing___AAsNotNullableExternCall___to_type[] = "typing::AAsNotNullableExternCall::(typing::ACastExternCall::to_type)";
+val_t syntax___typing___AAsNotNullableExternCall___to_type(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 1341;
+  fra.me.meth = LOCATE_syntax___typing___AAsNotNullableExternCall___to_type;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:1341 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AAsNotNullableExternCall___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AAttrFormExpr___prop[] = "typing::AAttrFormExpr::(syntax_base::AAttrFormExpr::prop)";
 val_t syntax___typing___AAttrFormExpr___prop(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1163;
+  fra.me.line = 1345;
   fra.me.meth = LOCATE_syntax___typing___AAttrFormExpr___prop;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1163 */
+  /* syntax/typing.nit:1345 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1163);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1345);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAttrFormExpr___attr_type[] = "typing::AAttrFormExpr::(syntax_base::AAttrFormExpr::attr_type)";
 val_t syntax___typing___AAttrFormExpr___attr_type(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1166;
+  fra.me.line = 1348;
   fra.me.meth = LOCATE_syntax___typing___AAttrFormExpr___attr_type;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1166 */
+  /* syntax/typing.nit:1348 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AAttrFormExpr____attr_type(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1166);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1348);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAttrFormExpr___do_typing[] = "typing::AAttrFormExpr::do_typing";
 void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -6477,10 +7637,11 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
     static val_t once_value_10; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1169;
+  fra.me.line = 1351;
   fra.me.meth = LOCATE_syntax___typing___AAttrFormExpr___do_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -6490,23 +7651,23 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1172 */
+  /* syntax/typing.nit:1354 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAttrFormExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1173 */
+  /* syntax/typing.nit:1355 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAttrFormExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1174 */
+  /* syntax/typing.nit:1356 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AAttrFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1175 */
+  /* syntax/typing.nit:1357 */
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1176 */
+    /* syntax/typing.nit:1358 */
     REGB0 = TAG_Int(3);
     fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_2) {
@@ -6531,16 +7692,16 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
     fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
-    /* ./syntax//typing.nit:1177 */
+    /* syntax/typing.nit:1359 */
     goto label1;
   }
-  /* ./syntax//typing.nit:1179 */
+  /* syntax/typing.nit:1361 */
   fra.me.REG[4] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1180 */
+  /* syntax/typing.nit:1362 */
   REGB0 = CALL_metamodel___abstractmetamodel___MMLocalClass___has_global_property_by_name(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1181 */
+    /* syntax/typing.nit:1363 */
     REGB0 = TAG_Int(5);
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_4) {
@@ -6576,12 +7737,12 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
     fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-    /* ./syntax//typing.nit:1182 */
+    /* syntax/typing.nit:1364 */
     goto label1;
   }
-  /* ./syntax//typing.nit:1184 */
+  /* syntax/typing.nit:1366 */
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalClass___select_attribute(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* ./syntax//typing.nit:1185 */
+  /* syntax/typing.nit:1367 */
   fra.me.REG[5] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMGlobalProperty___local_class(fra.me.REG[6])(fra.me.REG[6]);
@@ -6593,11 +7754,11 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:215 */
+  /* ../lib/standard/kernel.nit:235 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-  /* ./syntax//typing.nit:1185 */
+  /* syntax/typing.nit:1367 */
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1186 */
+    /* syntax/typing.nit:1368 */
     REGB1 = TAG_Int(7);
     fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
     if (!once_value_7) {
@@ -6649,29 +7810,30 @@ void syntax___typing___AAttrFormExpr___do_typing(val_t p0, val_t p1){
     fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[6]);
   }
-  /* ./syntax//typing.nit:1188 */
+  /* syntax/typing.nit:1370 */
   ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[0]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:1189 */
+  /* syntax/typing.nit:1371 */
   fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
   fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1190 */
+  /* syntax/typing.nit:1372 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAttrFormExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1190);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1372);
     }
     fra.me.REG[4] = CALL_metamodel___static_type___MMType___not_for_self(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:1191 */
+  /* syntax/typing.nit:1373 */
   ATTR_syntax___typing___AAttrFormExpr____attr_type(fra.me.REG[0]) = fra.me.REG[2];
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAttrExpr___after_typing[] = "typing::AAttrExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAttrExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -6679,24 +7841,25 @@ void syntax___typing___AAttrExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1196;
+  fra.me.line = 1378;
   fra.me.meth = LOCATE_syntax___typing___AAttrExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1198 */
+  /* syntax/typing.nit:1380 */
   CALL_syntax___typing___AAttrFormExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1199 */
+  /* syntax/typing.nit:1381 */
   fra.me.REG[1] = ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -6706,16 +7869,17 @@ void syntax___typing___AAttrExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1200 */
+  /* syntax/typing.nit:1382 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AAttrFormExpr___attr_type(fra.me.REG[0])(fra.me.REG[0]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1201 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1383 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAttrAssignExpr___after_typing[] = "typing::AAttrAssignExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAttrAssignExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -6723,26 +7887,27 @@ void syntax___typing___AAttrAssignExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1206;
+  fra.me.line = 1388;
   fra.me.meth = LOCATE_syntax___typing___AAttrAssignExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1208 */
+  /* syntax/typing.nit:1390 */
   CALL_syntax___typing___AAttrFormExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1209 */
+  /* syntax/typing.nit:1391 */
   fra.me.REG[2] = ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -6752,7 +7917,7 @@ void syntax___typing___AAttrAssignExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1210 */
+  /* syntax/typing.nit:1392 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AAttrFormExpr___attr_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
@@ -6760,13 +7925,14 @@ void syntax___typing___AAttrAssignExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1211 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1393 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAttrReassignExpr___after_typing[] = "typing::AAttrReassignExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAttrReassignExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -6774,26 +7940,27 @@ void syntax___typing___AAttrReassignExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1216;
+  fra.me.line = 1398;
   fra.me.meth = LOCATE_syntax___typing___AAttrReassignExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1218 */
+  /* syntax/typing.nit:1400 */
   CALL_syntax___typing___AAttrFormExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1219 */
+  /* syntax/typing.nit:1401 */
   fra.me.REG[2] = ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -6803,16 +7970,16 @@ void syntax___typing___AAttrReassignExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1220 */
+  /* syntax/typing.nit:1402 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AAttrFormExpr___attr_type(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___typing___AReassignFormExpr___do_rvalue_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2]);
-  /* ./syntax//typing.nit:1221 */
+  /* syntax/typing.nit:1403 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -6822,17 +7989,18 @@ void syntax___typing___AAttrReassignExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1222 */
+  /* syntax/typing.nit:1404 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[3])(fra.me.REG[3]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:1223 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1405 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AIssetAttrExpr___after_typing[] = "typing::AIssetAttrExpr::(typing::ANode::after_typing)";
 void syntax___typing___AIssetAttrExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -6841,25 +8009,26 @@ void syntax___typing___AIssetAttrExpr___after_typing(val_t p0, val_t p1){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1228;
+  fra.me.line = 1410;
   fra.me.meth = LOCATE_syntax___typing___AIssetAttrExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1230 */
+  /* syntax/typing.nit:1412 */
   CALL_syntax___typing___AAttrFormExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1231 */
+  /* syntax/typing.nit:1413 */
   fra.me.REG[2] = ATTR_syntax___typing___AAttrFormExpr____prop(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -6869,11 +8038,11 @@ void syntax___typing___AIssetAttrExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1232 */
+  /* syntax/typing.nit:1414 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AAttrFormExpr___attr_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[2])(fra.me.REG[2]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1233 */
+    /* syntax/typing.nit:1415 */
     if (!once_value_2) {
       fra.me.REG[2] = BOX_NativeString("Error: isset on a nullable attribute.");
       REGB0 = TAG_Int(37);
@@ -6884,43 +8053,46 @@ void syntax___typing___AIssetAttrExpr___after_typing(val_t p0, val_t p1){
     fra.me.REG[2] = fra.me.REG[2];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
   }
-  /* ./syntax//typing.nit:1235 */
+  /* syntax/typing.nit:1417 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1236 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1418 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAbsAbsSendExpr___prop_signature[] = "typing::AAbsAbsSendExpr::(syntax_base::AAbsAbsSendExpr::prop_signature)";
 val_t syntax___typing___AAbsAbsSendExpr___prop_signature(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1241;
+  fra.me.line = 1423;
   fra.me.meth = LOCATE_syntax___typing___AAbsAbsSendExpr___prop_signature;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1241 */
+  /* syntax/typing.nit:1423 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1242 */
+  /* syntax/typing.nit:1424 */
   fra.me.REG[1] = ATTR_syntax___typing___AAbsAbsSendExpr____prop_signature(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1242);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1424);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAbsAbsSendExpr___raw_arguments[] = "typing::AAbsAbsSendExpr::(syntax_base::AAbsAbsSendExpr::raw_arguments)";
 val_t syntax___typing___AAbsAbsSendExpr___raw_arguments(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -6928,24 +8100,25 @@ val_t syntax___typing___AAbsAbsSendExpr___raw_arguments(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1245;
+  fra.me.line = 1427;
   fra.me.meth = LOCATE_syntax___typing___AAbsAbsSendExpr___raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1248 */
+  /* syntax/typing.nit:1430 */
   fra.me.REG[1] = ATTR_syntax___typing___AAbsAbsSendExpr____raw_arguments_cache(fra.me.REG[0]);
-  /* ./syntax//typing.nit:1249 */
+  /* syntax/typing.nit:1431 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -6954,20 +8127,20 @@ val_t syntax___typing___AAbsAbsSendExpr___raw_arguments(val_t p0){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1250 */
+    /* syntax/typing.nit:1432 */
     fra.me.REG[2] = fra.me.REG[1];
     goto label1;
   } else {
-    /* ./syntax//typing.nit:1252 */
+    /* syntax/typing.nit:1434 */
     fra.me.REG[3] = CALL_syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[1] = fra.me.REG[3];
-    /* ./syntax//typing.nit:1253 */
+    /* syntax/typing.nit:1435 */
     REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -6978,9 +8151,9 @@ val_t syntax___typing___AAbsAbsSendExpr___raw_arguments(val_t p0){
       fra.me.REG[3] = NEW_Array_standard___collection___array___Array___init();
       fra.me.REG[1] = fra.me.REG[3];
     }
-    /* ./syntax//typing.nit:1254 */
+    /* syntax/typing.nit:1436 */
     ATTR_syntax___typing___AAbsAbsSendExpr____raw_arguments_cache(fra.me.REG[0]) = fra.me.REG[1];
-    /* ./syntax//typing.nit:1255 */
+    /* syntax/typing.nit:1437 */
     fra.me.REG[2] = fra.me.REG[1];
     goto label1;
   }
@@ -6988,6 +8161,7 @@ val_t syntax___typing___AAbsAbsSendExpr___raw_arguments(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_syntax___typing___AAbsAbsSendExpr___compute_raw_arguments[] = "typing::AAbsAbsSendExpr::compute_raw_arguments";
 val_t syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -6996,15 +8170,16 @@ val_t syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(val_t p0){
   static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1261;
+  fra.me.line = 1443;
   fra.me.meth = LOCATE_syntax___typing___AAbsAbsSendExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1263 */
+  /* syntax/typing.nit:1445 */
   REGB0 = TAG_Int(3);
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
   if (!once_value_1) {
@@ -7030,13 +8205,14 @@ val_t syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(val_t p0){
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
   CALL_standard___file___Object___print(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1264 */
+  /* syntax/typing.nit:1446 */
   fra.me.REG[1] = NIT_NULL;
   goto label3;
   label3: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAbsAbsSendExpr___process_signature[] = "typing::AAbsAbsSendExpr::process_signature";
 val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -7057,10 +8233,11 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
     static val_t once_value_3; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1267;
+  fra.me.line = 1449;
   fra.me.meth = LOCATE_syntax___typing___AAbsAbsSendExpr___process_signature;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -7073,17 +8250,17 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
   fra.me.REG[4] = p4;
-  /* ./syntax//typing.nit:1270 */
+  /* syntax/typing.nit:1452 */
   REGB0 = CALL_metamodel___vararg___MMSignature___vararg_rank(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1271 */
+  /* syntax/typing.nit:1453 */
   REGB1 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1273 */
+  /* syntax/typing.nit:1455 */
   REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     REGB3 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
-      REGB3 = TAG_Bool(false);
+      REGB3 = TAG_Bool(0);
       REGB2 = REGB3;
     } else {
       REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -7095,16 +8272,16 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
   } else {
     REGB3 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1273);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1455);
     }
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-    /* ./syntax//typing.nit:1273 */
+    /* syntax/typing.nit:1455 */
     REGB2 = REGB3;
   }
   REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -7112,42 +8289,42 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:217 */
+  /* ../lib/standard/kernel.nit:237 */
   REGB3 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-  /* ./syntax//typing.nit:1274 */
+  /* syntax/typing.nit:1456 */
   if (UNTAG_Bool(REGB3)) {
-    REGB3 = TAG_Bool(true);
+    REGB3 = TAG_Bool(1);
   } else {
     REGB4 = TAG_Bool(IS_EQUAL_OO(REGB1,REGB2));
     if (UNTAG_Bool(REGB4)) {
     } else {
-      /* ./../lib/standard//kernel.nit:210 */
+      /* ../lib/standard/kernel.nit:230 */
       REGB5 = TAG_Bool((REGB1)==(REGB2));
-      /* ./syntax//typing.nit:1274 */
+      /* syntax/typing.nit:1456 */
       REGB4 = REGB5;
     }
     REGB4 = TAG_Bool(!UNTAG_Bool(REGB4));
     if (UNTAG_Bool(REGB4)) {
       REGB4 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:219 */
+      /* ../lib/standard/kernel.nit:239 */
       REGB4 = TAG_Int(-UNTAG_Int(REGB4));
-      /* ./syntax//typing.nit:1274 */
+      /* syntax/typing.nit:1456 */
       REGB5 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB4));
       if (UNTAG_Bool(REGB5)) {
       } else {
-        /* ./../lib/standard//kernel.nit:210 */
+        /* ../lib/standard/kernel.nit:230 */
         REGB4 = TAG_Bool((REGB0)==(REGB4));
-        /* ./syntax//typing.nit:1274 */
+        /* syntax/typing.nit:1456 */
         REGB5 = REGB4;
       }
     } else {
-      REGB4 = TAG_Bool(false);
+      REGB4 = TAG_Bool(0);
       REGB5 = REGB4;
     }
     REGB3 = REGB5;
   }
   if (UNTAG_Bool(REGB3)) {
-    /* ./syntax//typing.nit:1275 */
+    /* syntax/typing.nit:1457 */
     REGB3 = TAG_Int(5);
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB3);
     if (!once_value_1) {
@@ -7183,79 +8360,79 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
     fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-    /* ./syntax//typing.nit:1276 */
-    REGB3 = TAG_Bool(false);
+    /* syntax/typing.nit:1458 */
+    REGB3 = TAG_Bool(0);
     goto label4;
   }
-  /* ./syntax//typing.nit:1278 */
+  /* syntax/typing.nit:1460 */
   REGB5 = TAG_Int(0);
-  /* ./syntax//typing.nit:1279 */
+  /* syntax/typing.nit:1461 */
   REGB4 = TAG_Int(0);
-  /* ./../lib/standard//kernel.nit:330 */
+  /* ../lib/standard/kernel.nit:350 */
   REGB6 = REGB1;
-  /* ./../lib/standard//kernel.nit:335 */
+  /* ../lib/standard/kernel.nit:355 */
   while(1) {
     REGB7 = TAG_Bool(VAL_ISA(REGB6, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB7)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB7 = TAG_Bool(UNTAG_Int(REGB4)<UNTAG_Int(REGB6));
-    /* ./../lib/standard//kernel.nit:335 */
+    /* ../lib/standard/kernel.nit:355 */
     if (UNTAG_Bool(REGB7)) {
-      /* ./syntax//typing.nit:1279 */
+      /* syntax/typing.nit:1461 */
       REGB7 = REGB4;
-      /* ./syntax//typing.nit:1281 */
+      /* syntax/typing.nit:1463 */
       fra.me.REG[5] = CALL_metamodel___static_type___MMSignature_____bra(fra.me.REG[2])(fra.me.REG[2], REGB7);
-      /* ./syntax//typing.nit:1282 */
+      /* syntax/typing.nit:1464 */
       REGB8 = TAG_Bool(IS_EQUAL_OO(REGB7,REGB0));
       if (UNTAG_Bool(REGB8)) {
       } else {
-        /* ./../lib/standard//kernel.nit:210 */
+        /* ../lib/standard/kernel.nit:230 */
         REGB7 = TAG_Bool((REGB7)==(REGB0));
-        /* ./syntax//typing.nit:1282 */
+        /* syntax/typing.nit:1464 */
         REGB8 = REGB7;
       }
       if (UNTAG_Bool(REGB8)) {
-        /* ./syntax//typing.nit:1283 */
+        /* syntax/typing.nit:1465 */
         REGB8 = TAG_Int(0);
-        /* ./../lib/standard//kernel.nit:220 */
+        /* ../lib/standard/kernel.nit:240 */
         REGB7 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB1));
-        /* ./../lib/standard//kernel.nit:324 */
+        /* ../lib/standard/kernel.nit:344 */
         while(1) {
           REGB9 = TAG_Bool(VAL_ISA(REGB7, VTCOLOR_standard___kernel___Comparable___OTHER(REGB8), VTID_standard___kernel___Comparable___OTHER(REGB8))) /*cast OTHER*/;
           if (UNTAG_Bool(REGB9)) {
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:214 */
+          /* ../lib/standard/kernel.nit:234 */
           REGB9 = TAG_Bool(UNTAG_Int(REGB8)<=UNTAG_Int(REGB7));
-          /* ./../lib/standard//kernel.nit:324 */
+          /* ../lib/standard/kernel.nit:344 */
           if (UNTAG_Bool(REGB9)) {
-            /* ./syntax//typing.nit:1284 */
+            /* syntax/typing.nit:1466 */
             REGB9 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
             if (UNTAG_Bool(REGB9)) {
-              nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1284);
+              nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1466);
             }
-            /* ./../lib/standard//collection//array.nit:241 */
+            /* ../lib/standard/collection/array.nit:278 */
             fra.me.REG[0] = fra.me.REG[4];
             REGB9 = REGB5;
-            /* ./../lib/standard//collection//array.nit:243 */
+            /* ../lib/standard/collection/array.nit:280 */
             REGB10 = TAG_Int(0);
             REGB11 = TAG_Bool(VAL_ISA(REGB10, VTCOLOR_standard___kernel___Comparable___OTHER(REGB9), VTID_standard___kernel___Comparable___OTHER(REGB9))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB11)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ./../lib/standard//kernel.nit:216 */
+            /* ../lib/standard/kernel.nit:236 */
             REGB10 = TAG_Bool(UNTAG_Int(REGB9)>=UNTAG_Int(REGB10));
-            /* ./../lib/standard//collection//array.nit:243 */
+            /* ../lib/standard/collection/array.nit:280 */
             if (UNTAG_Bool(REGB10)) {
               REGB10 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
               if (UNTAG_Bool(REGB10)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
               }
               REGB10 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
               REGB11 = TAG_Bool(VAL_ISA(REGB10, VTCOLOR_standard___kernel___Comparable___OTHER(REGB9), VTID_standard___kernel___Comparable___OTHER(REGB9))) /*cast OTHER*/;
@@ -7263,72 +8440,72 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ./../lib/standard//kernel.nit:215 */
+              /* ../lib/standard/kernel.nit:235 */
               REGB10 = TAG_Bool(UNTAG_Int(REGB9)<UNTAG_Int(REGB10));
             } else {
-              /* ./../lib/standard//collection//array.nit:243 */
-              REGB11 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:280 */
+              REGB11 = TAG_Bool(0);
               REGB10 = REGB11;
             }
             if (UNTAG_Bool(REGB10)) {
             } else {
-              nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
             }
-            /* ./../lib/standard//collection//array.nit:244 */
+            /* ../lib/standard/collection/array.nit:281 */
             fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
             REGB10 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
             if (UNTAG_Bool(REGB10)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
             }
-            /* ./../lib/standard//collection//array.nit:652 */
+            /* ../lib/standard/collection/array.nit:724 */
             fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB9)];
-            /* ./../lib/standard//collection//array.nit:244 */
+            /* ../lib/standard/collection/array.nit:281 */
             goto label5;
             label5: while(0);
-            /* ./syntax//typing.nit:1285 */
+            /* syntax/typing.nit:1467 */
             CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-            /* ./syntax//typing.nit:1286 */
+            /* syntax/typing.nit:1468 */
             REGB9 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB9 = TAG_Int(UNTAG_Int(REGB5)+UNTAG_Int(REGB9));
-            /* ./syntax//typing.nit:1286 */
+            /* syntax/typing.nit:1468 */
             REGB5 = REGB9;
-            /* ./../lib/standard//kernel.nit:326 */
+            /* ../lib/standard/kernel.nit:346 */
             REGB9 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB9 = TAG_Int(UNTAG_Int(REGB8)+UNTAG_Int(REGB9));
-            /* ./../lib/standard//kernel.nit:326 */
+            /* ../lib/standard/kernel.nit:346 */
             REGB8 = REGB9;
           } else {
-            /* ./../lib/standard//kernel.nit:324 */
+            /* ../lib/standard/kernel.nit:344 */
             goto label6;
           }
         }
         label6: while(0);
       } else {
-        /* ./syntax//typing.nit:1289 */
+        /* syntax/typing.nit:1471 */
         REGB8 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
         if (UNTAG_Bool(REGB8)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1289);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1471);
         }
-        /* ./../lib/standard//collection//array.nit:241 */
+        /* ../lib/standard/collection/array.nit:278 */
         fra.me.REG[3] = fra.me.REG[4];
         REGB8 = REGB5;
-        /* ./../lib/standard//collection//array.nit:243 */
+        /* ../lib/standard/collection/array.nit:280 */
         REGB7 = TAG_Int(0);
         REGB9 = TAG_Bool(VAL_ISA(REGB7, VTCOLOR_standard___kernel___Comparable___OTHER(REGB8), VTID_standard___kernel___Comparable___OTHER(REGB8))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB9)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:216 */
+        /* ../lib/standard/kernel.nit:236 */
         REGB7 = TAG_Bool(UNTAG_Int(REGB8)>=UNTAG_Int(REGB7));
-        /* ./../lib/standard//collection//array.nit:243 */
+        /* ../lib/standard/collection/array.nit:280 */
         if (UNTAG_Bool(REGB7)) {
           REGB7 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
           if (UNTAG_Bool(REGB7)) {
           } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
           }
           REGB7 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
           REGB9 = TAG_Bool(VAL_ISA(REGB7, VTCOLOR_standard___kernel___Comparable___OTHER(REGB8), VTID_standard___kernel___Comparable___OTHER(REGB8))) /*cast OTHER*/;
@@ -7336,59 +8513,60 @@ val_t syntax___typing___AAbsAbsSendExpr___process_signature(val_t p0, val_t p1,
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:215 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB7 = TAG_Bool(UNTAG_Int(REGB8)<UNTAG_Int(REGB7));
         } else {
-          /* ./../lib/standard//collection//array.nit:243 */
-          REGB9 = TAG_Bool(false);
+          /* ../lib/standard/collection/array.nit:280 */
+          REGB9 = TAG_Bool(0);
           REGB7 = REGB9;
         }
         if (UNTAG_Bool(REGB7)) {
         } else {
-          nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+          nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
         }
-        /* ./../lib/standard//collection//array.nit:244 */
+        /* ../lib/standard/collection/array.nit:281 */
         fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
         REGB7 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB7)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB8)];
-        /* ./../lib/standard//collection//array.nit:244 */
+        /* ../lib/standard/collection/array.nit:281 */
         goto label7;
         label7: while(0);
-        /* ./syntax//typing.nit:1289 */
+        /* syntax/typing.nit:1471 */
         fra.me.REG[0] = fra.me.REG[3];
-        /* ./syntax//typing.nit:1290 */
+        /* syntax/typing.nit:1472 */
         CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[5]);
-        /* ./syntax//typing.nit:1291 */
+        /* syntax/typing.nit:1473 */
         REGB8 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB8 = TAG_Int(UNTAG_Int(REGB5)+UNTAG_Int(REGB8));
-        /* ./syntax//typing.nit:1291 */
+        /* syntax/typing.nit:1473 */
         REGB5 = REGB8;
       }
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB8 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB8 = TAG_Int(UNTAG_Int(REGB4)+UNTAG_Int(REGB8));
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB4 = REGB8;
     } else {
-      /* ./../lib/standard//kernel.nit:335 */
+      /* ../lib/standard/kernel.nit:355 */
       goto label8;
     }
   }
   label8: while(0);
-  /* ./syntax//typing.nit:1294 */
-  REGB4 = TAG_Bool(true);
+  /* syntax/typing.nit:1476 */
+  REGB4 = TAG_Bool(1);
   REGB3 = REGB4;
   goto label4;
   label4: while(0);
   stack_frame_head = fra.me.prev;
   return REGB3;
 }
+static const char LOCATE_syntax___typing___AAbsAbsSendExpr___process_closures[] = "typing::AAbsAbsSendExpr::process_closures";
 val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[16];} fra;
   val_t REGB0;
@@ -7420,10 +8598,11 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       static val_t once_value_25; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1297;
+  fra.me.line = 1479;
   fra.me.meth = LOCATE_syntax___typing___AAbsAbsSendExpr___process_closures;
   fra.me.has_broke = 0;
   fra.me.REG_size = 17;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -7446,32 +8625,32 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
   fra.me.REG[4] = p4;
-  /* ./syntax//typing.nit:1300 */
+  /* syntax/typing.nit:1482 */
   fra.me.REG[5] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1301 */
+  /* syntax/typing.nit:1483 */
   fra.me.REG[6] = CALL_metamodel___static_type___MMSignature___closures(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1302 */
+  /* syntax/typing.nit:1484 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:229 */
+  /* ../lib/standard/collection/array.nit:266 */
   fra.me.REG[7] = fra.me.REG[6];
-  /* ./../lib/standard//collection//array.nit:232 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB1 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:233 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-  /* ./../lib/standard//collection//array.nit:234 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[8] = ATTR_standard___collection___array___Array____items(fra.me.REG[7]);
-  /* ./../lib/standard//collection//array.nit:235 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
     REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -7479,48 +8658,48 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./../lib/standard//collection//array.nit:236 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB2 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:652 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[9] = ((Nit_NativeArray)fra.me.REG[8])->val[UNTAG_Int(REGB1)];
-      /* ./syntax//typing.nit:1304 */
+      /* syntax/typing.nit:1486 */
       REGB2 = CALL_metamodel___static_type___MMClosure___is_optional(fra.me.REG[9])(fra.me.REG[9]);
       REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
       if (UNTAG_Bool(REGB2)) {
         REGB2 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-        /* ./syntax//typing.nit:1304 */
+        /* syntax/typing.nit:1486 */
         REGB0 = REGB2;
       }
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB2 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = REGB2;
     } else {
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ./syntax//typing.nit:1306 */
+  /* syntax/typing.nit:1488 */
   REGB1 = TAG_Int(0);
-  /* ./syntax//typing.nit:1307 */
+  /* syntax/typing.nit:1489 */
   REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     REGB3 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
-      REGB3 = TAG_Bool(false);
+      REGB3 = TAG_Bool(0);
       REGB2 = REGB3;
     } else {
       REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -7531,44 +8710,44 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
   if (UNTAG_Bool(REGB2)) {
     REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1307);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1489);
     }
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-    /* ./syntax//typing.nit:1307 */
+    /* syntax/typing.nit:1489 */
     REGB1 = REGB2;
   }
-  /* ./../lib/standard//collection//array.nit:23 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-  /* ./syntax//typing.nit:1308 */
+  /* syntax/typing.nit:1490 */
   REGB3 = TAG_Int(0);
   REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB4)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:217 */
+  /* ../lib/standard/kernel.nit:237 */
   REGB3 = TAG_Bool(UNTAG_Int(REGB2)>UNTAG_Int(REGB3));
-  /* ./syntax//typing.nit:1308 */
+  /* syntax/typing.nit:1490 */
   if (UNTAG_Bool(REGB3)) {
-    /* ./syntax//typing.nit:1309 */
+    /* syntax/typing.nit:1491 */
     REGB3 = TAG_Int(0);
     REGB2 = TAG_Bool(IS_EQUAL_OO(REGB1,REGB3));
     if (UNTAG_Bool(REGB2)) {
     } else {
-      /* ./../lib/standard//kernel.nit:210 */
+      /* ../lib/standard/kernel.nit:230 */
       REGB3 = TAG_Bool((REGB1)==(REGB3));
-      /* ./syntax//typing.nit:1309 */
+      /* syntax/typing.nit:1491 */
       REGB2 = REGB3;
     }
     if (UNTAG_Bool(REGB2)) {
@@ -7578,15 +8757,15 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:217 */
+      /* ../lib/standard/kernel.nit:237 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB2));
     } else {
-      /* ./syntax//typing.nit:1309 */
-      REGB3 = TAG_Bool(false);
+      /* syntax/typing.nit:1491 */
+      REGB3 = TAG_Bool(0);
       REGB2 = REGB3;
     }
     if (UNTAG_Bool(REGB2)) {
-      /* ./syntax//typing.nit:1310 */
+      /* syntax/typing.nit:1492 */
       REGB2 = TAG_Int(5);
       fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
       if (!once_value_2) {
@@ -7609,14 +8788,14 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       } else fra.me.REG[7] = once_value_3;
       fra.me.REG[7] = fra.me.REG[7];
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-      /* ./syntax//typing.nit:1310 */
+      /* syntax/typing.nit:1492 */
       fra.me.REG[7] = CALL_standard___string___Object___to_s(REGB2)(REGB2);
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
       if (!once_value_4) {
@@ -7631,11 +8810,11 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[8]);
     } else {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
       REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -7643,24 +8822,24 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:217 */
+      /* ../lib/standard/kernel.nit:237 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-      /* ./syntax//typing.nit:1311 */
+      /* syntax/typing.nit:1493 */
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(true);
+        REGB2 = TAG_Bool(1);
       } else {
         REGB3 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB3)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:215 */
+        /* ../lib/standard/kernel.nit:235 */
         REGB0 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB0));
-        /* ./syntax//typing.nit:1311 */
+        /* syntax/typing.nit:1493 */
         REGB2 = REGB0;
       }
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//typing.nit:1312 */
+        /* syntax/typing.nit:1494 */
         REGB2 = TAG_Int(7);
         fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
         if (!once_value_5) {
@@ -7683,14 +8862,14 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
         } else fra.me.REG[7] = once_value_6;
         fra.me.REG[7] = fra.me.REG[7];
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
-        /* ./../lib/standard//collection//array.nit:23 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
         }
         REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-        /* ./syntax//typing.nit:1312 */
+        /* syntax/typing.nit:1494 */
         fra.me.REG[7] = CALL_standard___string___Object___to_s(REGB2)(REGB2);
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
         if (!once_value_7) {
@@ -7704,16 +8883,16 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
         REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1312);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1494);
         }
-        /* ./../lib/standard//collection//array.nit:23 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
         }
         REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-        /* ./syntax//typing.nit:1312 */
+        /* syntax/typing.nit:1494 */
         fra.me.REG[7] = CALL_standard___string___Object___to_s(REGB2)(REGB2);
         CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[7]);
         if (!once_value_8) {
@@ -7728,15 +8907,15 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
         fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[8]);
       } else {
-        /* ./syntax//typing.nit:1315 */
+        /* syntax/typing.nit:1497 */
         fra.me.REG[8] = NIT_NULL;
-        /* ./syntax//typing.nit:1316 */
+        /* syntax/typing.nit:1498 */
         REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
           REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
           if (UNTAG_Bool(REGB0)) {
-            REGB0 = TAG_Bool(false);
+            REGB0 = TAG_Bool(0);
             REGB2 = REGB0;
           } else {
             REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -7748,42 +8927,42 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
           fra.me.REG[7] = NEW_Array_standard___collection___array___Array___init();
           fra.me.REG[8] = fra.me.REG[7];
         }
-        /* ./syntax//typing.nit:1319 */
+        /* syntax/typing.nit:1501 */
         REGB2 = TAG_Int(0);
         REGB0 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB0)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:217 */
+        /* ../lib/standard/kernel.nit:237 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-        /* ./syntax//typing.nit:1319 */
+        /* syntax/typing.nit:1501 */
         if (UNTAG_Bool(REGB2)) {
           REGB2 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:220 */
+          /* ../lib/standard/kernel.nit:240 */
           REGB2 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB2));
-          /* ./syntax//typing.nit:1319 */
+          /* syntax/typing.nit:1501 */
           REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
           if (UNTAG_Bool(REGB0)) {
-            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1319);
+            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1501);
           }
-          /* ./../lib/standard//collection//array.nit:241 */
+          /* ../lib/standard/collection/array.nit:278 */
           fra.me.REG[7] = fra.me.REG[4];
-          /* ./../lib/standard//collection//array.nit:243 */
+          /* ../lib/standard/collection/array.nit:280 */
           REGB0 = TAG_Int(0);
           REGB3 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
           if (UNTAG_Bool(REGB3)) {
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:216 */
+          /* ../lib/standard/kernel.nit:236 */
           REGB0 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB0));
-          /* ./../lib/standard//collection//array.nit:243 */
+          /* ../lib/standard/collection/array.nit:280 */
           if (UNTAG_Bool(REGB0)) {
             REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
             if (UNTAG_Bool(REGB0)) {
             } else {
-              nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+              nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
             }
             REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
             REGB3 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -7791,76 +8970,76 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ./../lib/standard//kernel.nit:215 */
+            /* ../lib/standard/kernel.nit:235 */
             REGB0 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB0));
           } else {
-            /* ./../lib/standard//collection//array.nit:243 */
-            REGB3 = TAG_Bool(false);
+            /* ../lib/standard/collection/array.nit:280 */
+            REGB3 = TAG_Bool(0);
             REGB0 = REGB3;
           }
           if (UNTAG_Bool(REGB0)) {
           } else {
-            nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+            nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
           }
-          /* ./../lib/standard//collection//array.nit:244 */
+          /* ../lib/standard/collection/array.nit:281 */
           fra.me.REG[7] = ATTR_standard___collection___array___Array____items(fra.me.REG[7]);
           REGB0 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
           if (UNTAG_Bool(REGB0)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
           }
-          /* ./../lib/standard//collection//array.nit:652 */
+          /* ../lib/standard/collection/array.nit:724 */
           fra.me.REG[7] = ((Nit_NativeArray)fra.me.REG[7])->val[UNTAG_Int(REGB2)];
-          /* ./../lib/standard//collection//array.nit:244 */
+          /* ../lib/standard/collection/array.nit:281 */
           goto label9;
           label9: while(0);
-          /* ./syntax//typing.nit:1319 */
+          /* syntax/typing.nit:1501 */
           REGB2 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
-            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1319);
+            nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1501);
           }
           fra.me.REG[7] = CALL_parser___parser_nodes___ALabelable___n_label(fra.me.REG[7])(fra.me.REG[7]);
         } else {
           fra.me.REG[7] = NIT_NULL;
         }
-        /* ./syntax//typing.nit:1322 */
+        /* syntax/typing.nit:1504 */
         REGB2 = TAG_Int(0);
-        /* ./../lib/standard//kernel.nit:330 */
+        /* ../lib/standard/kernel.nit:350 */
         REGB0 = REGB1;
-        /* ./../lib/standard//kernel.nit:335 */
+        /* ../lib/standard/kernel.nit:355 */
         while(1) {
           REGB3 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
           if (UNTAG_Bool(REGB3)) {
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:215 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB3 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB0));
-          /* ./../lib/standard//kernel.nit:335 */
+          /* ../lib/standard/kernel.nit:355 */
           if (UNTAG_Bool(REGB3)) {
-            /* ./syntax//typing.nit:1322 */
+            /* syntax/typing.nit:1504 */
             REGB3 = REGB2;
-            /* ./syntax//typing.nit:1323 */
+            /* syntax/typing.nit:1505 */
             REGB4 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
             if (UNTAG_Bool(REGB4)) {
-              nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1323);
+              nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1505);
             }
-            /* ./../lib/standard//collection//array.nit:241 */
+            /* ../lib/standard/collection/array.nit:278 */
             fra.me.REG[9] = fra.me.REG[4];
-            /* ./../lib/standard//collection//array.nit:243 */
+            /* ../lib/standard/collection/array.nit:280 */
             REGB4 = TAG_Int(0);
             REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB5)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ./../lib/standard//kernel.nit:216 */
+            /* ../lib/standard/kernel.nit:236 */
             REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-            /* ./../lib/standard//collection//array.nit:243 */
+            /* ../lib/standard/collection/array.nit:280 */
             if (UNTAG_Bool(REGB4)) {
               REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[9])!=NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 243);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
               }
               REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[9]);
               REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -7868,40 +9047,40 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ./../lib/standard//kernel.nit:215 */
+              /* ../lib/standard/kernel.nit:235 */
               REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
             } else {
-              /* ./../lib/standard//collection//array.nit:243 */
-              REGB5 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:280 */
+              REGB5 = TAG_Bool(0);
               REGB4 = REGB5;
             }
             if (UNTAG_Bool(REGB4)) {
             } else {
-              nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 243);
+              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
             }
-            /* ./../lib/standard//collection//array.nit:244 */
+            /* ../lib/standard/collection/array.nit:281 */
             fra.me.REG[9] = ATTR_standard___collection___array___Array____items(fra.me.REG[9]);
             REGB4 = TAG_Bool(fra.me.REG[9]==NIT_NULL);
             if (UNTAG_Bool(REGB4)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 244);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
             }
-            /* ./../lib/standard//collection//array.nit:652 */
+            /* ../lib/standard/collection/array.nit:724 */
             fra.me.REG[9] = ((Nit_NativeArray)fra.me.REG[9])->val[UNTAG_Int(REGB3)];
-            /* ./../lib/standard//collection//array.nit:244 */
+            /* ../lib/standard/collection/array.nit:281 */
             goto label10;
             label10: while(0);
-            /* ./syntax//typing.nit:1324 */
+            /* syntax/typing.nit:1506 */
             fra.me.REG[10] = CALL_parser___parser_nodes___AClosureDef___n_id(fra.me.REG[9])(fra.me.REG[9]);
             fra.me.REG[10] = CALL_syntax___typing___AClosureId___to_symbol(fra.me.REG[10])(fra.me.REG[10]);
-            /* ./syntax//typing.nit:1325 */
+            /* syntax/typing.nit:1507 */
             fra.me.REG[11] = CALL_metamodel___static_type___MMSignature___closure_named(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[10]);
-            /* ./syntax//typing.nit:1326 */
+            /* syntax/typing.nit:1508 */
             REGB3 = TAG_Bool(fra.me.REG[11]==NIT_NULL);
             if (UNTAG_Bool(REGB3)) {
             } else {
               REGB4 = TAG_Bool(fra.me.REG[11]==NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
-               REGB4 = TAG_Bool(false);
+               REGB4 = TAG_Bool(0);
                REGB3 = REGB4;
               } else {
                REGB4 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[11])(fra.me.REG[11], NIT_NULL);
@@ -7910,36 +9089,36 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
             }
             REGB3 = TAG_Bool(!UNTAG_Bool(REGB3));
             if (UNTAG_Bool(REGB3)) {
-              /* ./syntax//typing.nit:1327 */
+              /* syntax/typing.nit:1509 */
               fra.me.REG[11] = NEW_EscapableClosure_syntax___scope___EscapableClosure___init(fra.me.REG[9], fra.me.REG[11], fra.me.REG[8]);
-              /* ./syntax//typing.nit:1328 */
+              /* syntax/typing.nit:1510 */
               fra.me.REG[12] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
               CALL_syntax___scope___ScopeContext___push_escapable(fra.me.REG[12])(fra.me.REG[12], fra.me.REG[11], fra.me.REG[7]);
-              /* ./syntax//typing.nit:1329 */
+              /* syntax/typing.nit:1511 */
               CALL_syntax___typing___AClosureDef___accept_typing2(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[1], fra.me.REG[11]);
-              /* ./syntax//typing.nit:1330 */
+              /* syntax/typing.nit:1512 */
               fra.me.REG[11] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
               CALL_syntax___scope___ScopeContext___pop(fra.me.REG[11])(fra.me.REG[11]);
             } else {
-              /* ./../lib/standard//collection//array.nit:23 */
+              /* ../lib/standard/collection/array.nit:24 */
               REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6])!=NIT_NULL);
               if (UNTAG_Bool(REGB3)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
               }
               REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[6]);
-              /* ./syntax//typing.nit:1331 */
+              /* syntax/typing.nit:1513 */
               REGB4 = TAG_Int(1);
               REGB5 = TAG_Bool(IS_EQUAL_OO(REGB3,REGB4));
               if (UNTAG_Bool(REGB5)) {
               } else {
-               /* ./../lib/standard//kernel.nit:210 */
+               /* ../lib/standard/kernel.nit:230 */
                REGB4 = TAG_Bool((REGB3)==(REGB4));
-               /* ./syntax//typing.nit:1331 */
+               /* syntax/typing.nit:1513 */
                REGB5 = REGB4;
               }
               if (UNTAG_Bool(REGB5)) {
-               /* ./syntax//typing.nit:1332 */
+               /* syntax/typing.nit:1514 */
                fra.me.REG[11] = CALL_parser___parser_nodes___AClosureDef___n_id(fra.me.REG[9])(fra.me.REG[9]);
                REGB5 = TAG_Int(7);
                fra.me.REG[12] = NEW_Array_standard___collection___array___Array___with_capacity(REGB5);
@@ -7977,7 +9156,7 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
                fra.me.REG[13] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[6])(fra.me.REG[6]);
                REGB5 = TAG_Bool(fra.me.REG[13]==NIT_NULL);
                if (UNTAG_Bool(REGB5)) {
-               nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1332);
+               nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1514);
                }
                fra.me.REG[13] = CALL_metamodel___static_type___MMClosure___name(fra.me.REG[13])(fra.me.REG[13]);
                fra.me.REG[13] = CALL_standard___string___Object___to_s(fra.me.REG[13])(fra.me.REG[13]);
@@ -7994,28 +9173,28 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
                fra.me.REG[12] = CALL_standard___string___Object___to_s(fra.me.REG[12])(fra.me.REG[12]);
                CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[11], fra.me.REG[12]);
               } else {
-               /* ./syntax//typing.nit:1334 */
+               /* syntax/typing.nit:1516 */
                fra.me.REG[12] = NEW_Array_standard___collection___array___Array___init();
-               /* ./../lib/standard//collection//array.nit:229 */
+               /* ../lib/standard/collection/array.nit:266 */
                fra.me.REG[11] = fra.me.REG[6];
-               /* ./../lib/standard//collection//array.nit:232 */
+               /* ../lib/standard/collection/array.nit:269 */
                REGB5 = TAG_Int(0);
-               /* ./../lib/standard//collection//array.nit:233 */
+               /* ../lib/standard/collection/array.nit:270 */
                REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[11])!=NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
                }
                REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[11]);
-               /* ./../lib/standard//collection//array.nit:234 */
+               /* ../lib/standard/collection/array.nit:271 */
                fra.me.REG[13] = ATTR_standard___collection___array___Array____items(fra.me.REG[11]);
-               /* ./../lib/standard//collection//array.nit:235 */
+               /* ../lib/standard/collection/array.nit:272 */
                while(1) {
-               /* ./../lib/standard//collection//array.nit:23 */
+               /* ../lib/standard/collection/array.nit:24 */
                REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[11])!=NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
                }
                REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[11]);
                REGB3 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB5), VTID_standard___kernel___Comparable___OTHER(REGB5))) /*cast OTHER*/;
@@ -8023,18 +9202,18 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ./../lib/standard//kernel.nit:215 */
+               /* ../lib/standard/kernel.nit:235 */
                REGB4 = TAG_Bool(UNTAG_Int(REGB5)<UNTAG_Int(REGB4));
-               /* ./../lib/standard//collection//array.nit:235 */
+               /* ../lib/standard/collection/array.nit:272 */
                if (UNTAG_Bool(REGB4)) {
-               /* ./../lib/standard//collection//array.nit:236 */
+               /* ../lib/standard/collection/array.nit:273 */
                REGB4 = TAG_Bool(fra.me.REG[13]==NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
                }
-               /* ./../lib/standard//collection//array.nit:652 */
+               /* ../lib/standard/collection/array.nit:724 */
                fra.me.REG[14] = ((Nit_NativeArray)fra.me.REG[13])->val[UNTAG_Int(REGB5)];
-               /* ./syntax//typing.nit:1336 */
+               /* syntax/typing.nit:1518 */
                REGB4 = TAG_Int(3);
                fra.me.REG[15] = NEW_Array_standard___collection___array___Array___with_capacity(REGB4);
                if (!once_value_15) {
@@ -8060,19 +9239,19 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
                CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[15])(fra.me.REG[15], fra.me.REG[14]);
                fra.me.REG[15] = CALL_standard___string___Object___to_s(fra.me.REG[15])(fra.me.REG[15]);
                CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[12])(fra.me.REG[12], fra.me.REG[15]);
-               /* ./../lib/standard//collection//array.nit:237 */
+               /* ../lib/standard/collection/array.nit:274 */
                REGB4 = TAG_Int(1);
-               /* ./../lib/standard//kernel.nit:218 */
+               /* ../lib/standard/kernel.nit:238 */
                REGB4 = TAG_Int(UNTAG_Int(REGB5)+UNTAG_Int(REGB4));
-               /* ./../lib/standard//collection//array.nit:237 */
+               /* ../lib/standard/collection/array.nit:274 */
                REGB5 = REGB4;
                } else {
-               /* ./../lib/standard//collection//array.nit:235 */
+               /* ../lib/standard/collection/array.nit:272 */
                goto label17;
                }
                }
                label17: while(0);
-               /* ./syntax//typing.nit:1338 */
+               /* syntax/typing.nit:1520 */
                fra.me.REG[9] = CALL_parser___parser_nodes___AClosureDef___n_id(fra.me.REG[9])(fra.me.REG[9]);
                REGB5 = TAG_Int(7);
                fra.me.REG[13] = NEW_Array_standard___collection___array___Array___with_capacity(REGB5);
@@ -8130,25 +9309,25 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
                CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[9], fra.me.REG[13]);
               }
             }
-            /* ./../lib/standard//kernel.nit:337 */
+            /* ../lib/standard/kernel.nit:357 */
             REGB5 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB5 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB5));
-            /* ./../lib/standard//kernel.nit:337 */
+            /* ../lib/standard/kernel.nit:357 */
             REGB2 = REGB5;
           } else {
-            /* ./../lib/standard//kernel.nit:335 */
+            /* ../lib/standard/kernel.nit:355 */
             goto label23;
           }
         }
         label23: while(0);
-        /* ./syntax//typing.nit:1343 */
+        /* syntax/typing.nit:1525 */
         REGB2 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
           REGB0 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
           if (UNTAG_Bool(REGB0)) {
-            REGB0 = TAG_Bool(false);
+            REGB0 = TAG_Bool(0);
             REGB2 = REGB0;
           } else {
             REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[8])(fra.me.REG[8], NIT_NULL);
@@ -8157,26 +9336,26 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
         }
         REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
         if (UNTAG_Bool(REGB2)) {
-          /* ./syntax//typing.nit:1344 */
+          /* syntax/typing.nit:1526 */
           fra.me.REG[8] = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform_multiexpr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5], fra.me.REG[8]);
           fra.me.REG[5] = fra.me.REG[8];
         }
       }
     }
   } else {
-    /* ./syntax//typing.nit:1347 */
+    /* syntax/typing.nit:1529 */
     REGB2 = TAG_Int(0);
     REGB0 = TAG_Bool(IS_EQUAL_OO(REGB1,REGB2));
     if (UNTAG_Bool(REGB0)) {
     } else {
-      /* ./../lib/standard//kernel.nit:210 */
+      /* ../lib/standard/kernel.nit:230 */
       REGB2 = TAG_Bool((REGB1)==(REGB2));
-      /* ./syntax//typing.nit:1347 */
+      /* syntax/typing.nit:1529 */
       REGB0 = REGB2;
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1348 */
+      /* syntax/typing.nit:1530 */
       REGB0 = TAG_Int(3);
       fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_24) {
@@ -8203,12 +9382,13 @@ val_t syntax___typing___AAbsAbsSendExpr___process_closures(val_t p0, val_t p1, v
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[8]);
     }
   }
-  /* ./syntax//typing.nit:1350 */
+  /* syntax/typing.nit:1532 */
   goto label26;
   label26: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[5];
 }
+static const char LOCATE_syntax___typing___AAbsSendExpr___do_typing[] = "typing::AAbsSendExpr::do_typing";
 void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4, val_t p5, val_t p6, val_t p7){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -8217,10 +9397,11 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1355;
+  fra.me.line = 1537;
   fra.me.meth = LOCATE_syntax___typing___AAbsSendExpr___do_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -8236,15 +9417,15 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
   fra.me.REG[3] = p5;
   fra.me.REG[4] = p6;
   fra.me.REG[5] = p7;
-  /* ./syntax//typing.nit:1358 */
+  /* syntax/typing.nit:1540 */
   fra.me.REG[3] = CALL_syntax___typing___AAbsSendExpr___get_property(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], REGB0, fra.me.REG[3]);
-  /* ./syntax//typing.nit:1359 */
+  /* syntax/typing.nit:1541 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      REGB2 = TAG_Bool(false);
+      REGB2 = TAG_Bool(0);
       REGB0 = REGB2;
     } else {
       REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -8254,12 +9435,12 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1360 */
+  /* syntax/typing.nit:1542 */
   fra.me.REG[2] = CALL_syntax___typing___AAbsSendExpr___get_signature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], REGB1);
-  /* ./syntax//typing.nit:1361 */
+  /* syntax/typing.nit:1543 */
   REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1361);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1543);
   }
   fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(fra.me.REG[3])(fra.me.REG[3]);
   REGB1 = CALL_syntax___typing___AAbsAbsSendExpr___process_signature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[6], fra.me.REG[4]);
@@ -8267,20 +9448,20 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1362 */
+  /* syntax/typing.nit:1544 */
   REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1362);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1544);
   }
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___name(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_syntax___typing___AAbsAbsSendExpr___process_closures(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[4], fra.me.REG[5]);
-  /* ./syntax//typing.nit:1363 */
+  /* syntax/typing.nit:1545 */
   REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(false);
+      REGB0 = TAG_Bool(0);
       REGB1 = REGB0;
     } else {
       REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -8294,7 +9475,7 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
     } else {
       REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
-        REGB0 = TAG_Bool(false);
+        REGB0 = TAG_Bool(0);
         REGB1 = REGB0;
       } else {
         REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -8303,22 +9484,23 @@ void syntax___typing___AAbsSendExpr___do_typing(val_t p0, val_t p1, val_t p2, va
     }
     REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   } else {
-    REGB0 = TAG_Bool(false);
+    REGB0 = TAG_Bool(0);
     REGB1 = REGB0;
   }
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1364 */
+  /* syntax/typing.nit:1546 */
   ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:1365 */
+  /* syntax/typing.nit:1547 */
   ATTR_syntax___typing___AAbsAbsSendExpr____prop_signature(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1366 */
+  /* syntax/typing.nit:1548 */
   ATTR_syntax___typing___AAbsSendExpr____return_type(fra.me.REG[0]) = fra.me.REG[5];
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAbsSendExpr___get_property[] = "typing::AAbsSendExpr::get_property";
 val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[9];} fra;
   val_t REGB0;
@@ -8344,10 +9526,11 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       static val_t once_value_17; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1369;
+  fra.me.line = 1551;
   fra.me.meth = LOCATE_syntax___typing___AAbsSendExpr___get_property;
   fra.me.has_broke = 0;
   fra.me.REG_size = 10;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -8363,10 +9546,10 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
   fra.me.REG[2] = p2;
   REGB0 = p3;
   fra.me.REG[3] = p4;
-  /* ./syntax//typing.nit:1371 */
+  /* syntax/typing.nit:1553 */
   REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1372 */
+    /* syntax/typing.nit:1554 */
     if (!once_value_1) {
       if (!once_value_2) {
         fra.me.REG[4] = BOX_NativeString("==");
@@ -8376,7 +9559,7 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
         register_static_object(&once_value_2);
       } else fra.me.REG[4] = once_value_2;
       fra.me.REG[4] = fra.me.REG[4];
-      fra.me.REG[4] = CALL_standard___symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
+      fra.me.REG[4] = CALL_symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
       once_value_1 = fra.me.REG[4];
       register_static_object(&once_value_1);
     } else fra.me.REG[4] = once_value_1;
@@ -8388,7 +9571,7 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(true);
+      REGB1 = TAG_Bool(1);
     } else {
       if (!once_value_3) {
         if (!once_value_4) {
@@ -8399,7 +9582,7 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
           register_static_object(&once_value_4);
         } else fra.me.REG[4] = once_value_4;
         fra.me.REG[4] = fra.me.REG[4];
-        fra.me.REG[4] = CALL_standard___symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
+        fra.me.REG[4] = CALL_symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
         once_value_3 = fra.me.REG[4];
         register_static_object(&once_value_3);
       } else fra.me.REG[4] = once_value_3;
@@ -8413,12 +9596,12 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
-      /* ./syntax//typing.nit:1374 */
+      /* syntax/typing.nit:1556 */
       fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_object(fra.me.REG[1])(fra.me.REG[1]);
       fra.me.REG[4] = CALL_metamodel___static_type___MMType___as_nullable(fra.me.REG[4])(fra.me.REG[4]);
       fra.me.REG[2] = fra.me.REG[4];
     } else {
-      /* ./syntax//typing.nit:1376 */
+      /* syntax/typing.nit:1558 */
       REGB1 = TAG_Int(3);
       fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
       if (!once_value_5) {
@@ -8443,28 +9626,28 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
       fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
-      /* ./syntax//typing.nit:1377 */
+      /* syntax/typing.nit:1559 */
       fra.me.REG[4] = NIT_NULL;
       goto label7;
     }
   }
-  /* ./syntax//typing.nit:1380 */
+  /* syntax/typing.nit:1562 */
   fra.me.REG[5] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1381 */
+  /* syntax/typing.nit:1563 */
   fra.me.REG[6] = NIT_NULL;
-  /* ./syntax//typing.nit:1382 */
+  /* syntax/typing.nit:1564 */
   REGB1 = CALL_metamodel___abstractmetamodel___MMLocalClass___has_global_property_by_name(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
   if (UNTAG_Bool(REGB1)) {
     fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalClass___select_method(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
     fra.me.REG[6] = fra.me.REG[7];
   }
-  /* ./syntax//typing.nit:1383 */
+  /* syntax/typing.nit:1565 */
   REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      REGB2 = TAG_Bool(false);
+      REGB2 = TAG_Bool(0);
       REGB1 = REGB2;
     } else {
       REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], NIT_NULL);
@@ -8472,35 +9655,27 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
     }
   }
   if (UNTAG_Bool(REGB1)) {
-    fra.me.REG[7] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
-    REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[7])(fra.me.REG[7]);
-  } else {
-    REGB2 = TAG_Bool(false);
-    REGB1 = REGB2;
-  }
-  if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1384 */
+    /* syntax/typing.nit:1566 */
     fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalClass___super_methods_named(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-    /* ./syntax//typing.nit:1385 */
+    /* syntax/typing.nit:1567 */
     REGB2 = TAG_Int(1);
     REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB3)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:217 */
+    /* ../lib/standard/kernel.nit:237 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-    /* ./syntax//typing.nit:1385 */
+    /* syntax/typing.nit:1567 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./syntax//typing.nit:1386 */
+      /* syntax/typing.nit:1568 */
       REGB2 = TAG_Int(5);
       fra.me.REG[8] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
       if (!once_value_8) {
@@ -8544,54 +9719,54 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[9]);
       fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[8]);
-      /* ./syntax//typing.nit:1387 */
+      /* syntax/typing.nit:1569 */
       fra.me.REG[4] = NIT_NULL;
       goto label7;
     } else {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-      /* ./syntax//typing.nit:1388 */
+      /* syntax/typing.nit:1570 */
       REGB1 = TAG_Int(1);
       REGB3 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB1));
       if (UNTAG_Bool(REGB3)) {
       } else {
-        /* ./../lib/standard//kernel.nit:210 */
+        /* ../lib/standard/kernel.nit:230 */
         REGB1 = TAG_Bool((REGB2)==(REGB1));
-        /* ./syntax//typing.nit:1388 */
+        /* syntax/typing.nit:1570 */
         REGB3 = REGB1;
       }
       if (UNTAG_Bool(REGB3)) {
-        /* ./syntax//typing.nit:1389 */
+        /* syntax/typing.nit:1571 */
         fra.me.REG[7] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[7])(fra.me.REG[7]);
         REGB3 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1389);
+          nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1571);
         }
         fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
         fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalClass_____bra(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[7]);
-        /* ./syntax//typing.nit:1390 */
+        /* syntax/typing.nit:1572 */
         REGB3 = TAG_Bool(VAL_ISA(fra.me.REG[7], COLOR_metamodel___abstractmetamodel___MMMethod, ID_metamodel___abstractmetamodel___MMMethod)) /*cast MMMethod*/;
         if (UNTAG_Bool(REGB3)) {
         } else {
-          nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1390);
+          nit_abort("Assert failed", NULL, LOCATE_syntax___typing, 1572);
         }
-        /* ./syntax//typing.nit:1391 */
+        /* syntax/typing.nit:1573 */
         fra.me.REG[6] = fra.me.REG[7];
       }
     }
   }
-  /* ./syntax//typing.nit:1395 */
+  /* syntax/typing.nit:1577 */
   REGB3 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
   if (UNTAG_Bool(REGB3)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB3 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], NIT_NULL);
@@ -8599,9 +9774,9 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
     }
   }
   if (UNTAG_Bool(REGB3)) {
-    /* ./syntax//typing.nit:1396 */
+    /* syntax/typing.nit:1578 */
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1397 */
+      /* syntax/typing.nit:1579 */
       REGB0 = TAG_Int(5);
       fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_12) {
@@ -8638,7 +9813,7 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[7]);
     } else {
-      /* ./syntax//typing.nit:1399 */
+      /* syntax/typing.nit:1581 */
       REGB0 = TAG_Int(5);
       fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_15) {
@@ -8675,27 +9850,29 @@ val_t syntax___typing___AAbsSendExpr___get_property(val_t p0, val_t p1, val_t p2
       fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[7]);
     }
-    /* ./syntax//typing.nit:1401 */
+    /* syntax/typing.nit:1583 */
     fra.me.REG[4] = NIT_NULL;
     goto label7;
   }
-  /* ./syntax//typing.nit:1403 */
+  /* syntax/typing.nit:1585 */
   fra.me.REG[4] = fra.me.REG[6];
   goto label7;
   label7: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[4];
 }
+static const char LOCATE_syntax___typing___AAbsSendExpr___get_signature[] = "typing::AAbsSendExpr::get_signature";
 val_t syntax___typing___AAbsSendExpr___get_signature(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1406;
+  fra.me.line = 1588;
   fra.me.meth = LOCATE_syntax___typing___AAbsSendExpr___get_signature;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -8707,69 +9884,74 @@ val_t syntax___typing___AAbsSendExpr___get_signature(val_t p0, val_t p1, val_t p
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
   REGB0 = p4;
-  /* ./syntax//typing.nit:1409 */
+  /* syntax/typing.nit:1591 */
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___syntax_base___MMGlobalProperty___check_visibility(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1], fra.me.REG[0], fra.me.REG[5], REGB0);
-  /* ./syntax//typing.nit:1410 */
+  /* syntax/typing.nit:1592 */
   fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* ./syntax//typing.nit:1411 */
+  /* syntax/typing.nit:1593 */
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___not_for_self(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = fra.me.REG[3];
   }
-  /* ./syntax//typing.nit:1412 */
+  /* syntax/typing.nit:1594 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_syntax___typing___AAbsSendExpr___prop[] = "typing::AAbsSendExpr::(syntax_base::AAbsSendExpr::prop)";
 val_t syntax___typing___AAbsSendExpr___prop(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1415;
+  fra.me.line = 1597;
   fra.me.meth = LOCATE_syntax___typing___AAbsSendExpr___prop;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1415 */
+  /* syntax/typing.nit:1597 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1416 */
+  /* syntax/typing.nit:1598 */
   fra.me.REG[1] = ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1416);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1598);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AAbsSendExpr___return_type[] = "typing::AAbsSendExpr::(syntax_base::AAbsSendExpr::return_type)";
 val_t syntax___typing___AAbsSendExpr___return_type(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1419;
+  fra.me.line = 1601;
   fra.me.meth = LOCATE_syntax___typing___AAbsSendExpr___return_type;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1419 */
+  /* syntax/typing.nit:1601 */
   fra.me.REG[0] = ATTR_syntax___typing___AAbsSendExpr____return_type(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASuperInitCall___register_super_init_call[] = "typing::ASuperInitCall::register_super_init_call";
 void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[10];} fra;
+  struct {struct stack_frame_t me; val_t MORE_REG[8];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t REGB2;
@@ -8782,15 +9964,13 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
       static val_t once_value_6; /* Once value */
         static val_t once_value_7; /* Once value */
         static val_t once_value_8; /* Once value */
-               static val_t once_value_9; /* Once value */
-               static val_t once_value_10; /* Once value */
-               static val_t once_value_11; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1426;
+  fra.me.line = 1608;
   fra.me.meth = LOCATE_syntax___typing___ASuperInitCall___register_super_init_call;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 11;
+  fra.me.REG_size = 9;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -8800,14 +9980,12 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[7] = NIT_NULL;
   fra.me.REG[8] = NIT_NULL;
-  fra.me.REG[9] = NIT_NULL;
-  fra.me.REG[10] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:1426 */
+  /* syntax/typing.nit:1608 */
   fra.me.REG[3] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1428 */
+  /* syntax/typing.nit:1610 */
   fra.me.REG[4] = CALL_parser___parser_prod___ANode___parent(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___top_block(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[4],fra.me.REG[5]));
@@ -8815,7 +9993,7 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
   } else {
     REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
@@ -8833,11 +10011,11 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1429 */
+    /* syntax/typing.nit:1611 */
     REGB0 = TAG_Int(3);
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_1) {
@@ -8863,42 +10041,42 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
     fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[5]);
   }
-  /* ./syntax//typing.nit:1431 */
+  /* syntax/typing.nit:1613 */
   fra.me.REG[5] = CALL_syntax___syntax_base___AbsSyntaxVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMGlobalProperty___intro(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___local_class(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMModule_____bra(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-  /* ./syntax//typing.nit:1432 */
+  /* syntax/typing.nit:1614 */
   fra.me.REG[5] = NIT_NULL;
-  /* ./syntax//typing.nit:1433 */
+  /* syntax/typing.nit:1615 */
   fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___explicit_super_init_calls(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[6]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1433);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1615);
   }
-  /* ./syntax//typing.nit:1434 */
+  /* syntax/typing.nit:1616 */
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[6])(fra.me.REG[6]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1435 */
+    /* syntax/typing.nit:1617 */
     fra.me.REG[0] = CALL_standard___collection___abstract_collection___SequenceRead___last(fra.me.REG[6])(fra.me.REG[6]);
     REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1435);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1617);
     }
     fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMGlobalProperty___intro(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalProperty___local_class(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[5] = fra.me.REG[0];
   }
-  /* ./syntax//typing.nit:1437 */
+  /* syntax/typing.nit:1619 */
   fra.me.REG[0] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[1])(fra.me.REG[1]);
   fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalClass___cshe(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_metamodel___partial_order___PartialOrderElement___reverse_linear_extension(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./syntax//typing.nit:1438 */
+  /* syntax/typing.nit:1620 */
   fra.me.REG[7] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_class(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[4],fra.me.REG[7]));
   if (UNTAG_Bool(REGB0)) {
@@ -8907,15 +10085,15 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1439 */
-    REGB0 = TAG_Bool(true);
+    /* syntax/typing.nit:1621 */
+    REGB0 = TAG_Bool(1);
     CALL_syntax___typing___TypingVisitor___explicit_other_init_call__eq(fra.me.REG[1])(fra.me.REG[1], REGB0);
   } else {
-    /* ./syntax//typing.nit:1440 */
+    /* syntax/typing.nit:1622 */
     REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1441 */
+      /* syntax/typing.nit:1623 */
       REGB0 = TAG_Int(5);
       fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_3) {
@@ -8960,7 +10138,7 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
       fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[7]);
     } else {
-      /* ./syntax//typing.nit:1442 */
+      /* syntax/typing.nit:1624 */
       REGB0 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[4],fra.me.REG[5]));
       if (UNTAG_Bool(REGB0)) {
       } else {
@@ -8968,7 +10146,7 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1443 */
+        /* syntax/typing.nit:1625 */
         REGB0 = TAG_Int(3);
         fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
         if (!once_value_7) {
@@ -8994,24 +10172,24 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
         fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[7]);
       } else {
-        /* ./../lib/standard//collection//array.nit:232 */
+        /* ../lib/standard/collection/array.nit:269 */
         REGB0 = TAG_Int(0);
-        /* ./../lib/standard//collection//array.nit:233 */
+        /* ../lib/standard/collection/array.nit:270 */
         REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
         }
         REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-        /* ./../lib/standard//collection//array.nit:234 */
+        /* ../lib/standard/collection/array.nit:271 */
         fra.me.REG[7] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         while(1) {
-          /* ./../lib/standard//collection//array.nit:23 */
+          /* ../lib/standard/collection/array.nit:24 */
           REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
           } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
           }
           REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
           REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -9019,132 +10197,83 @@ void syntax___typing___ASuperInitCall___register_super_init_call(val_t p0, val_t
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ./../lib/standard//kernel.nit:215 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-          /* ./../lib/standard//collection//array.nit:235 */
+          /* ../lib/standard/collection/array.nit:272 */
           if (UNTAG_Bool(REGB1)) {
-            /* ./../lib/standard//collection//array.nit:236 */
+            /* ../lib/standard/collection/array.nit:273 */
             REGB1 = TAG_Bool(fra.me.REG[7]==NIT_NULL);
             if (UNTAG_Bool(REGB1)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
             }
-            /* ./../lib/standard//collection//array.nit:652 */
-            fra.me.REG[8] = ((Nit_NativeArray)fra.me.REG[7])->val[UNTAG_Int(REGB0)];
-            /* ./syntax//typing.nit:1446 */
-            REGB1 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[8],fra.me.REG[5]));
+            /* ../lib/standard/collection/array.nit:724 */
+            fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[7])->val[UNTAG_Int(REGB0)];
+            /* syntax/typing.nit:1628 */
+            REGB1 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[3],fra.me.REG[5]));
             if (UNTAG_Bool(REGB1)) {
             } else {
-              REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[5]);
+              REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
               REGB1 = REGB2;
             }
             if (UNTAG_Bool(REGB1)) {
-              /* ./syntax//typing.nit:1447 */
+              /* syntax/typing.nit:1629 */
               fra.me.REG[5] = NIT_NULL;
             } else {
-              /* ./syntax//typing.nit:1448 */
-              REGB1 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[8],fra.me.REG[4]));
+              /* syntax/typing.nit:1630 */
+              REGB1 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[3],fra.me.REG[4]));
               if (UNTAG_Bool(REGB1)) {
               } else {
-               REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[4]);
+               REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
                REGB1 = REGB2;
               }
               if (UNTAG_Bool(REGB1)) {
-               /* ./syntax//typing.nit:1449 */
-               REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-               if (UNTAG_Bool(REGB1)) {
-               } else {
-               REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-               if (UNTAG_Bool(REGB2)) {
-               REGB2 = TAG_Bool(false);
-               REGB1 = REGB2;
-               } else {
-               REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
-               REGB1 = REGB2;
-               }
-               }
-               REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-               if (UNTAG_Bool(REGB1)) {
-               /* ./syntax//typing.nit:1450 */
-               REGB1 = TAG_Int(5);
-               fra.me.REG[9] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-               if (!once_value_9) {
-               fra.me.REG[10] = BOX_NativeString("Error: Constructor of ");
-               REGB1 = TAG_Int(22);
-               fra.me.REG[10] = NEW_String_standard___string___String___with_native(fra.me.REG[10], REGB1);
-               once_value_9 = fra.me.REG[10];
-               register_static_object(&once_value_9);
-               } else fra.me.REG[10] = once_value_9;
-               fra.me.REG[10] = fra.me.REG[10];
-               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[10]);
-               fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[8])(fra.me.REG[8]);
-               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[8]);
-               if (!once_value_10) {
-               fra.me.REG[8] = BOX_NativeString(" must be invoked before constructor of ");
-               REGB1 = TAG_Int(39);
-               fra.me.REG[8] = NEW_String_standard___string___String___with_native(fra.me.REG[8], REGB1);
-               once_value_10 = fra.me.REG[8];
-               register_static_object(&once_value_10);
-               } else fra.me.REG[8] = once_value_10;
-               fra.me.REG[8] = fra.me.REG[8];
-               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[8]);
-               fra.me.REG[8] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[8]);
-               if (!once_value_11) {
-               fra.me.REG[8] = BOX_NativeString("");
-               REGB1 = TAG_Int(0);
-               fra.me.REG[8] = NEW_String_standard___string___String___with_native(fra.me.REG[8], REGB1);
-               once_value_11 = fra.me.REG[8];
-               register_static_object(&once_value_11);
-               } else fra.me.REG[8] = once_value_11;
-               fra.me.REG[8] = fra.me.REG[8];
-               CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[9])(fra.me.REG[9], fra.me.REG[8]);
-               fra.me.REG[9] = CALL_standard___string___Object___to_s(fra.me.REG[9])(fra.me.REG[9]);
-               CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[9]);
-               }
-               /* ./syntax//typing.nit:1452 */
+               /* syntax/typing.nit:1631 */
                CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[2]);
-               /* ./syntax//typing.nit:1453 */
-               goto label12;
+               /* syntax/typing.nit:1632 */
+               goto label9;
               }
             }
-            /* ./../lib/standard//collection//array.nit:237 */
+            /* ../lib/standard/collection/array.nit:274 */
             REGB1 = TAG_Int(1);
-            /* ./../lib/standard//kernel.nit:218 */
+            /* ../lib/standard/kernel.nit:238 */
             REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-            /* ./../lib/standard//collection//array.nit:237 */
+            /* ../lib/standard/collection/array.nit:274 */
             REGB0 = REGB1;
           } else {
-            /* ./../lib/standard//collection//array.nit:235 */
-            goto label13;
+            /* ../lib/standard/collection/array.nit:272 */
+            goto label10;
           }
         }
-        label13: while(0);
-        label12: while(0);
+        label10: while(0);
+        label9: while(0);
       }
     }
   }
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ANewExpr___compute_raw_arguments[] = "typing::ANewExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ANewExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1462;
+  fra.me.line = 1641;
   fra.me.meth = LOCATE_syntax___typing___ANewExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1462 */
+  /* syntax/typing.nit:1641 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ANewExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ANewExpr___after_typing[] = "typing::ANewExpr::(typing::ANode::after_typing)";
 void syntax___typing___ANewExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -9153,15 +10282,21 @@ void syntax___typing___ANewExpr___after_typing(val_t p0, val_t p1){
     static val_t once_value_2; /* Once value */
     static val_t once_value_3; /* Once value */
     static val_t once_value_4; /* Once value */
-      static val_t once_value_5; /* Once value */
+    static val_t once_value_5; /* Once value */
     static val_t once_value_6; /* Once value */
-    static val_t once_value_7; /* Once value */
+      static val_t once_value_7; /* Once value */
+    static val_t once_value_8; /* Once value */
+    static val_t once_value_9; /* Once value */
+    static val_t once_value_10; /* Once value */
+    static val_t once_value_11; /* Once value */
+    static val_t once_value_12; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1463;
+  fra.me.line = 1642;
   fra.me.meth = LOCATE_syntax___typing___ANewExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -9169,58 +10304,87 @@ void syntax___typing___ANewExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1465 */
+  /* syntax/typing.nit:1644 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ANewExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1466 */
+  /* syntax/typing.nit:1645 */
   fra.me.REG[2] = CALL_parser___parser_nodes___ANewExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1467 */
+  /* syntax/typing.nit:1646 */
   fra.me.REG[3] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_abstract(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1468 */
+    /* syntax/typing.nit:1647 */
+    REGB0 = TAG_Int(3);
+    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+    if (!once_value_2) {
+      fra.me.REG[4] = BOX_NativeString("Error: try to instantiate abstract class ");
+      REGB0 = TAG_Int(41);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
+      once_value_2 = fra.me.REG[4];
+      register_static_object(&once_value_2);
+    } else fra.me.REG[4] = once_value_2;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[4] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    if (!once_value_3) {
+      fra.me.REG[4] = BOX_NativeString(".");
+      REGB0 = TAG_Int(1);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
+      once_value_3 = fra.me.REG[4];
+      register_static_object(&once_value_3);
+    } else fra.me.REG[4] = once_value_3;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
+    /* syntax/typing.nit:1648 */
+    goto label1;
+  }
+  /* syntax/typing.nit:1650 */
+  REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[2])(fra.me.REG[2]);
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:1651 */
     REGB0 = TAG_Int(3);
     fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_2) {
-      fra.me.REG[4] = BOX_NativeString("Error: try to instantiate abstract class ");
-      REGB0 = TAG_Int(41);
+    if (!once_value_4) {
+      fra.me.REG[4] = BOX_NativeString("Type error: cannot instantiate the nullable type ");
+      REGB0 = TAG_Int(49);
       fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
-      once_value_2 = fra.me.REG[4];
-      register_static_object(&once_value_2);
-    } else fra.me.REG[4] = once_value_2;
+      once_value_4 = fra.me.REG[4];
+      register_static_object(&once_value_4);
+    } else fra.me.REG[4] = once_value_4;
     fra.me.REG[4] = fra.me.REG[4];
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_3) {
+    if (!once_value_5) {
       fra.me.REG[4] = BOX_NativeString(".");
       REGB0 = TAG_Int(1);
       fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB0);
-      once_value_3 = fra.me.REG[4];
-      register_static_object(&once_value_3);
-    } else fra.me.REG[4] = once_value_3;
+      once_value_5 = fra.me.REG[4];
+      register_static_object(&once_value_5);
+    } else fra.me.REG[4] = once_value_5;
     fra.me.REG[4] = fra.me.REG[4];
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
     fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
-    /* ./syntax//typing.nit:1469 */
-    goto label1;
   }
-  /* ./syntax//typing.nit:1472 */
+  /* syntax/typing.nit:1654 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ANewExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -9228,44 +10392,44 @@ void syntax___typing___ANewExpr___after_typing(val_t p0, val_t p1){
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1473 */
-    if (!once_value_4) {
-      if (!once_value_5) {
+    /* syntax/typing.nit:1655 */
+    if (!once_value_6) {
+      if (!once_value_7) {
         fra.me.REG[3] = BOX_NativeString("init");
         REGB0 = TAG_Int(4);
         fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
-        once_value_5 = fra.me.REG[3];
-        register_static_object(&once_value_5);
-      } else fra.me.REG[3] = once_value_5;
+        once_value_7 = fra.me.REG[3];
+        register_static_object(&once_value_7);
+      } else fra.me.REG[3] = once_value_7;
       fra.me.REG[3] = fra.me.REG[3];
-      fra.me.REG[3] = CALL_standard___symbol___String___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
-      once_value_4 = fra.me.REG[3];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[3] = once_value_4;
+      fra.me.REG[3] = CALL_symbol___String___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
+      once_value_6 = fra.me.REG[3];
+      register_static_object(&once_value_6);
+    } else fra.me.REG[3] = once_value_6;
     fra.me.REG[3] = fra.me.REG[3];
   } else {
-    /* ./syntax//typing.nit:1475 */
+    /* syntax/typing.nit:1657 */
     fra.me.REG[4] = CALL_parser___parser_nodes___ANewExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
     REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1475);
+      nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1657);
     }
     fra.me.REG[4] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
     fra.me.REG[3] = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:1478 */
-  REGB0 = TAG_Bool(false);
-  REGB1 = TAG_Bool(false);
+  /* syntax/typing.nit:1660 */
+  REGB0 = TAG_Bool(0);
+  REGB1 = TAG_Bool(0);
   fra.me.REG[4] = CALL_syntax___syntax_base___AAbsAbsSendExpr___raw_arguments(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___AAbsSendExpr___do_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], REGB0, REGB1, fra.me.REG[3], fra.me.REG[4], NIT_NULL);
-  /* ./syntax//typing.nit:1479 */
+  /* syntax/typing.nit:1661 */
   fra.me.REG[4] = ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(false);
+      REGB0 = TAG_Bool(0);
       REGB1 = REGB0;
     } else {
       REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -9275,100 +10439,155 @@ void syntax___typing___ANewExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1481 */
+  /* syntax/typing.nit:1663 */
   fra.me.REG[4] = CALL_syntax___syntax_base___AAbsSendExpr___prop(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1482 */
+    /* syntax/typing.nit:1664 */
     REGB1 = TAG_Int(3);
     fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-    if (!once_value_6) {
+    if (!once_value_8) {
       fra.me.REG[3] = BOX_NativeString("Error: ");
       REGB1 = TAG_Int(7);
       fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB1);
-      once_value_6 = fra.me.REG[3];
-      register_static_object(&once_value_6);
-    } else fra.me.REG[3] = once_value_6;
+      once_value_8 = fra.me.REG[3];
+      register_static_object(&once_value_8);
+    } else fra.me.REG[3] = once_value_8;
     fra.me.REG[3] = fra.me.REG[3];
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
     fra.me.REG[3] = CALL_syntax___syntax_base___AAbsSendExpr___prop(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    if (!once_value_7) {
+    if (!once_value_9) {
       fra.me.REG[3] = BOX_NativeString(" is not a constructor.");
       REGB1 = TAG_Int(22);
       fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB1);
-      once_value_7 = fra.me.REG[3];
-      register_static_object(&once_value_7);
-    } else fra.me.REG[3] = once_value_7;
+      once_value_9 = fra.me.REG[3];
+      register_static_object(&once_value_9);
+    } else fra.me.REG[3] = once_value_9;
     fra.me.REG[3] = fra.me.REG[3];
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
     fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
-    /* ./syntax//typing.nit:1483 */
+    /* syntax/typing.nit:1665 */
+    goto label1;
+  }
+  /* syntax/typing.nit:1667 */
+  fra.me.REG[4] = CALL_syntax___syntax_base___AAbsSendExpr___prop(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
+  fra.me.REG[3] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
+  REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init_for(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
+  REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
+  if (UNTAG_Bool(REGB1)) {
+    /* syntax/typing.nit:1668 */
+    REGB1 = TAG_Int(5);
+    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
+    if (!once_value_10) {
+      fra.me.REG[4] = BOX_NativeString("Error: ");
+      REGB1 = TAG_Int(7);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB1);
+      once_value_10 = fra.me.REG[4];
+      register_static_object(&once_value_10);
+    } else fra.me.REG[4] = once_value_10;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[4] = CALL_syntax___syntax_base___AAbsSendExpr___prop(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    if (!once_value_11) {
+      fra.me.REG[4] = BOX_NativeString(" is not a constructor in ");
+      REGB1 = TAG_Int(25);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB1);
+      once_value_11 = fra.me.REG[4];
+      register_static_object(&once_value_11);
+    } else fra.me.REG[4] = once_value_11;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[4] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    if (!once_value_12) {
+      fra.me.REG[4] = BOX_NativeString(".");
+      REGB1 = TAG_Int(1);
+      fra.me.REG[4] = NEW_String_standard___string___String___with_native(fra.me.REG[4], REGB1);
+      once_value_12 = fra.me.REG[4];
+      register_static_object(&once_value_12);
+    } else fra.me.REG[4] = once_value_12;
+    fra.me.REG[4] = fra.me.REG[4];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
+    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
+    /* syntax/typing.nit:1669 */
     goto label1;
   }
-  /* ./syntax//typing.nit:1485 */
+  /* syntax/typing.nit:1671 */
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1486 */
-  REGB1 = TAG_Bool(true);
+  /* syntax/typing.nit:1672 */
+  REGB1 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASendExpr___name[] = "typing::ASendExpr::name";
 val_t syntax___typing___ASendExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1492;
+  fra.me.line = 1678;
   fra.me.meth = LOCATE_syntax___typing___ASendExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./syntax//typing.nit:1492 */
-  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1492);
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1678 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1678);
   stack_frame_head = fra.me.prev;
   return NIT_NULL;
 }
+static const char LOCATE_syntax___typing___ASendExpr___closure_defs[] = "typing::ASendExpr::(syntax_base::ASendExpr::closure_defs)";
 val_t syntax___typing___ASendExpr___closure_defs(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1495;
+  fra.me.line = 1681;
   fra.me.meth = LOCATE_syntax___typing___ASendExpr___closure_defs;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1496 */
+  /* syntax/typing.nit:1682 */
   fra.me.REG[0] = NIT_NULL;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASendExpr___after_typing[] = "typing::ASendExpr::(typing::ANode::after_typing)";
 void syntax___typing___ASendExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1498;
+  fra.me.line = 1684;
   fra.me.meth = LOCATE_syntax___typing___ASendExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1500 */
+  /* syntax/typing.nit:1686 */
   CALL_syntax___typing___ASendExpr___do_all_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASendExpr___do_all_typing[] = "typing::ASendExpr::do_all_typing";
 void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -9380,10 +10599,11 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
         static val_t once_value_5; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1503;
+  fra.me.line = 1689;
   fra.me.meth = LOCATE_syntax___typing___ASendExpr___do_all_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -9393,16 +10613,16 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1503 */
+  /* syntax/typing.nit:1689 */
   fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1505 */
+  /* syntax/typing.nit:1691 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1506 */
+  /* syntax/typing.nit:1692 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
@@ -9413,14 +10633,14 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
   fra.me.REG[5] = CALL_syntax___syntax_base___AAbsAbsSendExpr___raw_arguments(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[6] = CALL_syntax___syntax_base___ASendExpr___closure_defs(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___typing___AAbsSendExpr___do_typing(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[3], REGB0, REGB1, fra.me.REG[4], fra.me.REG[5], fra.me.REG[6]);
-  /* ./syntax//typing.nit:1507 */
+  /* syntax/typing.nit:1693 */
   fra.me.REG[6] = ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[2]);
   REGB1 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB0 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(false);
+      REGB0 = TAG_Bool(0);
       REGB1 = REGB0;
     } else {
       REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], NIT_NULL);
@@ -9430,24 +10650,24 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1508 */
+  /* syntax/typing.nit:1694 */
   fra.me.REG[6] = ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[2]);
   REGB1 = TAG_Bool(fra.me.REG[6]!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1508);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1694);
   }
-  /* ./syntax//typing.nit:1510 */
+  /* syntax/typing.nit:1696 */
   fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[6])(fra.me.REG[6]);
   REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1511 */
+    /* syntax/typing.nit:1697 */
     fra.me.REG[0] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[0])(fra.me.REG[0]);
     REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[0])(fra.me.REG[0]);
     REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
     if (UNTAG_Bool(REGB1)) {
-      /* ./syntax//typing.nit:1512 */
+      /* syntax/typing.nit:1698 */
       REGB1 = TAG_Int(3);
       fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
       if (!once_value_2) {
@@ -9473,12 +10693,12 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
       fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[0]);
     } else {
-      /* ./syntax//typing.nit:1513 */
+      /* syntax/typing.nit:1699 */
       fra.me.REG[0] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
       REGB1 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[0])(fra.me.REG[0]);
       REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
       if (UNTAG_Bool(REGB1)) {
-        /* ./syntax//typing.nit:1514 */
+        /* syntax/typing.nit:1700 */
         REGB1 = TAG_Int(3);
         fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
         if (!once_value_4) {
@@ -9504,47 +10724,50 @@ void syntax___typing___ASendExpr___do_all_typing(val_t p0, val_t p1){
         fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[0]);
       } else {
-        /* ./syntax//typing.nit:1516 */
+        /* syntax/typing.nit:1702 */
         CALL_syntax___typing___ASuperInitCall___register_super_init_call(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[6]);
       }
     }
   }
-  /* ./syntax//typing.nit:1520 */
+  /* syntax/typing.nit:1706 */
   fra.me.REG[6] = CALL_syntax___syntax_base___AAbsSendExpr___return_type(fra.me.REG[2])(fra.me.REG[2]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[2]) = fra.me.REG[6];
-  /* ./syntax//typing.nit:1521 */
-  REGB1 = TAG_Bool(true);
+  /* syntax/typing.nit:1707 */
+  REGB1 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ASendReassignExpr___read_prop[] = "typing::ASendReassignExpr::(syntax_base::ASendReassignExpr::read_prop)";
 val_t syntax___typing___ASendReassignExpr___read_prop(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1526;
+  fra.me.line = 1712;
   fra.me.meth = LOCATE_syntax___typing___ASendReassignExpr___read_prop;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1526 */
+  /* syntax/typing.nit:1712 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___ASendReassignExpr____read_prop(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1526);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1712);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ASendReassignExpr___do_all_typing[] = "typing::ASendReassignExpr::(typing::ASendExpr::do_all_typing)";
 void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
   val_t REGB0;
@@ -9563,10 +10786,11 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
         static val_t once_value_11; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1528;
+  fra.me.line = 1714;
   fra.me.meth = LOCATE_syntax___typing___ASendReassignExpr___do_all_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 7;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -9576,18 +10800,18 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1528 */
+  /* syntax/typing.nit:1714 */
   fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1530 */
+  /* syntax/typing.nit:1716 */
   fra.me.REG[3] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1531 */
+  /* syntax/typing.nit:1717 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AAbsAbsSendExpr___raw_arguments(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1532 */
+  /* syntax/typing.nit:1718 */
   fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[5] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
@@ -9596,15 +10820,15 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   REGB1 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[5])(fra.me.REG[5]);
   fra.me.REG[5] = CALL_syntax___typing___ASendExpr___name(fra.me.REG[2])(fra.me.REG[2]);
   CALL_syntax___typing___AAbsSendExpr___do_typing(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[4], REGB0, REGB1, fra.me.REG[5], fra.me.REG[3], NIT_NULL);
-  /* ./syntax//typing.nit:1533 */
+  /* syntax/typing.nit:1719 */
   fra.me.REG[5] = ATTR_syntax___typing___AAbsSendExpr____prop(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1534 */
+  /* syntax/typing.nit:1720 */
   REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(false);
+      REGB0 = TAG_Bool(0);
       REGB1 = REGB0;
     } else {
       REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -9614,21 +10838,21 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1535 */
+  /* syntax/typing.nit:1721 */
   REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1535);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1721);
   }
   fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[5])(fra.me.REG[5]);
   REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[4])(fra.me.REG[4]);
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1536 */
+    /* syntax/typing.nit:1722 */
     fra.me.REG[4] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[4])(fra.me.REG[4]);
     REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[4])(fra.me.REG[4]);
     REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
     if (UNTAG_Bool(REGB1)) {
-      /* ./syntax//typing.nit:1537 */
+      /* syntax/typing.nit:1723 */
       REGB1 = TAG_Int(3);
       fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
       if (!once_value_2) {
@@ -9654,12 +10878,12 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
       fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
     } else {
-      /* ./syntax//typing.nit:1538 */
+      /* syntax/typing.nit:1724 */
       fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
       REGB1 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[4])(fra.me.REG[4]);
       REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
       if (UNTAG_Bool(REGB1)) {
-        /* ./syntax//typing.nit:1539 */
+        /* syntax/typing.nit:1725 */
         REGB1 = TAG_Int(3);
         fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
         if (!once_value_4) {
@@ -9687,21 +10911,21 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
       }
     }
   }
-  /* ./syntax//typing.nit:1542 */
+  /* syntax/typing.nit:1728 */
   fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1542);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1728);
   }
   fra.me.REG[4] = CALL_metamodel___static_type___MMLocalProperty___signature_for(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
   fra.me.REG[4] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = TAG_Bool((fra.me.REG[4]!=NIT_NULL) && VAL_ISA(fra.me.REG[4], COLOR_metamodel___static_type___MMType, ID_metamodel___static_type___MMType)) /*cast MMType*/;
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1542);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1728);
   }
-  /* ./syntax//typing.nit:1543 */
+  /* syntax/typing.nit:1729 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB1 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
@@ -9709,15 +10933,15 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
     fra.me.REG[0] = CALL_metamodel___static_type___MMType___not_for_self(fra.me.REG[4])(fra.me.REG[4]);
     fra.me.REG[4] = fra.me.REG[0];
   }
-  /* ./syntax//typing.nit:1545 */
+  /* syntax/typing.nit:1731 */
   fra.me.REG[4] = CALL_syntax___typing___AReassignFormExpr___do_rvalue_typing(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:1546 */
+  /* syntax/typing.nit:1732 */
   REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(false);
+      REGB0 = TAG_Bool(0);
       REGB1 = REGB0;
     } else {
       REGB0 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
@@ -9727,19 +10951,19 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1547 */
+  /* syntax/typing.nit:1733 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[0] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___syntax_base___AbsSyntaxVisitor___check_conform(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4], fra.me.REG[0]);
-  /* ./syntax//typing.nit:1549 */
+  /* syntax/typing.nit:1735 */
   ATTR_syntax___typing___ASendReassignExpr____read_prop(fra.me.REG[2]) = fra.me.REG[5];
-  /* ./syntax//typing.nit:1550 */
+  /* syntax/typing.nit:1736 */
   fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[3] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1551 */
+  /* syntax/typing.nit:1737 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[2])(fra.me.REG[2]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  /* ./syntax//typing.nit:1553 */
+  /* syntax/typing.nit:1739 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[0] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
@@ -9770,23 +10994,23 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
   fra.me.REG[6] = fra.me.REG[6];
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
   fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  fra.me.REG[4] = CALL_standard___symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
+  fra.me.REG[4] = CALL_symbol___String___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
   CALL_syntax___typing___AAbsSendExpr___do_typing(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1], fra.me.REG[0], REGB1, REGB0, fra.me.REG[4], fra.me.REG[3], NIT_NULL);
-  /* ./syntax//typing.nit:1554 */
+  /* syntax/typing.nit:1740 */
   REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1554);
+    nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1740);
   }
   fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[5])(fra.me.REG[5]);
   REGB0 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1555 */
+    /* syntax/typing.nit:1741 */
     fra.me.REG[3] = CALL_syntax___syntax_base___AbsSyntaxVisitor___local_property(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[3])(fra.me.REG[3]);
     REGB0 = CALL_metamodel___abstractmetamodel___MMGlobalProperty___is_init(fra.me.REG[3])(fra.me.REG[3]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1556 */
+      /* syntax/typing.nit:1742 */
       REGB0 = TAG_Int(3);
       fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
       if (!once_value_8) {
@@ -9812,12 +11036,12 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
       fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
     } else {
-      /* ./syntax//typing.nit:1557 */
+      /* syntax/typing.nit:1743 */
       fra.me.REG[3] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
       REGB0 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[3])(fra.me.REG[3]);
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1558 */
+        /* syntax/typing.nit:1744 */
         REGB0 = TAG_Int(3);
         fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
         if (!once_value_10) {
@@ -9845,27 +11069,29 @@ void syntax___typing___ASendReassignExpr___do_all_typing(val_t p0, val_t p1){
       }
     }
   }
-  /* ./syntax//typing.nit:1562 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1748 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[2]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ABinopExpr___compute_raw_arguments[] = "typing::ABinopExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ABinopExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1567;
+  fra.me.line = 1753;
   fra.me.meth = LOCATE_syntax___typing___ABinopExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1567 */
+  /* syntax/typing.nit:1753 */
   REGB0 = TAG_Int(1);
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
   fra.me.REG[0] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[0])(fra.me.REG[0]);
@@ -9875,6 +11101,7 @@ val_t syntax___typing___ABinopExpr___compute_raw_arguments(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AEqExpr___name[] = "typing::AEqExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AEqExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -9883,13 +11110,14 @@ val_t syntax___typing___AEqExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1570;
+  fra.me.line = 1756;
   fra.me.meth = LOCATE_syntax___typing___AEqExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1570 */
+  /* syntax/typing.nit:1756 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("==");
@@ -9899,7 +11127,7 @@ val_t syntax___typing___AEqExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -9909,6 +11137,7 @@ val_t syntax___typing___AEqExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AEqExpr___after_typing[] = "typing::AEqExpr::(typing::ANode::after_typing)";
 void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -9918,27 +11147,28 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_3; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1571;
+  fra.me.line = 1757;
   fra.me.meth = LOCATE_syntax___typing___AEqExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1571 */
+  /* syntax/typing.nit:1757 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:1573 */
+  /* syntax/typing.nit:1759 */
   CALL_SUPER_syntax___typing___AEqExpr___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1574 */
+  /* syntax/typing.nit:1760 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     REGB1 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
@@ -9948,7 +11178,7 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1575 */
+  /* syntax/typing.nit:1761 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
@@ -9958,32 +11188,32 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
     REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
-    /* ./syntax//typing.nit:1576 */
+    /* syntax/typing.nit:1762 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
-    /* ./syntax//typing.nit:1575 */
+    /* syntax/typing.nit:1761 */
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1576 */
+    /* syntax/typing.nit:1762 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    /* ./syntax//typing.nit:1575 */
-    REGB1 = TAG_Bool(false);
+    /* syntax/typing.nit:1761 */
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1577 */
+    /* syntax/typing.nit:1763 */
     if (!once_value_2) {
       fra.me.REG[1] = BOX_NativeString("Warning: comparaison between null and a non nullable value.");
       REGB0 = TAG_Int(59);
@@ -9994,20 +11224,20 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
     fra.me.REG[1] = fra.me.REG[1];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[1]);
   }
-  /* ./syntax//typing.nit:1580 */
+  /* syntax/typing.nit:1766 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1581 */
+    /* syntax/typing.nit:1767 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1582 */
+      /* syntax/typing.nit:1768 */
       if (!once_value_3) {
-        fra.me.REG[1] = BOX_NativeString("Warning: comparaison between 2 null values.");
-        REGB0 = TAG_Int(43);
+        fra.me.REG[1] = BOX_NativeString("Warning: comparaison between two null values.");
+        REGB0 = TAG_Int(45);
         fra.me.REG[1] = NEW_String_standard___string___String___with_native(fra.me.REG[1], REGB0);
         once_value_3 = fra.me.REG[1];
         register_static_object(&once_value_3);
@@ -10015,17 +11245,17 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
       fra.me.REG[1] = fra.me.REG[1];
       CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[1]);
     } else {
-      /* ./syntax//typing.nit:1584 */
+      /* syntax/typing.nit:1770 */
       fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
       CALL_syntax___typing___AEqExpr___try_to_isa(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1]);
     }
   } else {
-    /* ./syntax//typing.nit:1586 */
+    /* syntax/typing.nit:1772 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1587 */
+      /* syntax/typing.nit:1773 */
       fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
       CALL_syntax___typing___AEqExpr___try_to_isa(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1]);
     }
@@ -10034,6 +11264,7 @@ void syntax___typing___AEqExpr___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AEqExpr___try_to_isa[] = "typing::AEqExpr::try_to_isa";
 void syntax___typing___AEqExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -10041,10 +11272,11 @@ void syntax___typing___AEqExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1591;
+  fra.me.line = 1777;
   fra.me.meth = LOCATE_syntax___typing___AEqExpr___try_to_isa;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -10053,15 +11285,15 @@ void syntax___typing___AEqExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:1593 */
+  /* syntax/typing.nit:1779 */
   fra.me.REG[3] = CALL_syntax___typing___AExpr___its_variable(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1594 */
+  /* syntax/typing.nit:1780 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -10073,17 +11305,17 @@ void syntax___typing___AEqExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
     fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[4], COLOR_metamodel___static_type___MMNullableType, ID_metamodel___static_type___MMNullableType)) /*cast MMNullableType*/;
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1595 */
+    /* syntax/typing.nit:1781 */
     fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[3], fra.me.REG[2]);
     ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]) = fra.me.REG[2];
-    /* ./syntax//typing.nit:1596 */
+    /* syntax/typing.nit:1782 */
     fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_none(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[1] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[3], fra.me.REG[1]);
@@ -10092,6 +11324,7 @@ void syntax___typing___AEqExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ANeExpr___name[] = "typing::ANeExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ANeExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10100,13 +11333,14 @@ val_t syntax___typing___ANeExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1601;
+  fra.me.line = 1787;
   fra.me.meth = LOCATE_syntax___typing___ANeExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1601 */
+  /* syntax/typing.nit:1787 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("!=");
@@ -10116,7 +11350,7 @@ val_t syntax___typing___ANeExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10126,6 +11360,7 @@ val_t syntax___typing___ANeExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ANeExpr___after_typing[] = "typing::ANeExpr::(typing::ANode::after_typing)";
 void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -10135,27 +11370,28 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_3; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1602;
+  fra.me.line = 1788;
   fra.me.meth = LOCATE_syntax___typing___ANeExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1602 */
+  /* syntax/typing.nit:1788 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:1604 */
+  /* syntax/typing.nit:1790 */
   CALL_SUPER_syntax___typing___ANeExpr___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1605 */
+  /* syntax/typing.nit:1791 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     REGB1 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
@@ -10165,7 +11401,7 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1606 */
+  /* syntax/typing.nit:1792 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
@@ -10175,32 +11411,32 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
     REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
-    /* ./syntax//typing.nit:1607 */
+    /* syntax/typing.nit:1793 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
-    /* ./syntax//typing.nit:1606 */
+    /* syntax/typing.nit:1792 */
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1607 */
+    /* syntax/typing.nit:1793 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    /* ./syntax//typing.nit:1606 */
-    REGB1 = TAG_Bool(false);
+    /* syntax/typing.nit:1792 */
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1608 */
+    /* syntax/typing.nit:1794 */
     if (!once_value_2) {
       fra.me.REG[1] = BOX_NativeString("Warning: comparaison between null and a non nullable value.");
       REGB0 = TAG_Int(59);
@@ -10211,20 +11447,20 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
     fra.me.REG[1] = fra.me.REG[1];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[1]);
   }
-  /* ./syntax//typing.nit:1611 */
+  /* syntax/typing.nit:1797 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1612 */
+    /* syntax/typing.nit:1798 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1613 */
+      /* syntax/typing.nit:1799 */
       if (!once_value_3) {
-        fra.me.REG[1] = BOX_NativeString("Warning: comparaison between 2 null values.");
-        REGB0 = TAG_Int(43);
+        fra.me.REG[1] = BOX_NativeString("Warning: comparaison between two null values.");
+        REGB0 = TAG_Int(45);
         fra.me.REG[1] = NEW_String_standard___string___String___with_native(fra.me.REG[1], REGB0);
         once_value_3 = fra.me.REG[1];
         register_static_object(&once_value_3);
@@ -10232,17 +11468,17 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
       fra.me.REG[1] = fra.me.REG[1];
       CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[1]);
     } else {
-      /* ./syntax//typing.nit:1615 */
+      /* syntax/typing.nit:1801 */
       fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
       CALL_syntax___typing___ANeExpr___try_to_isa(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1]);
     }
   } else {
-    /* ./syntax//typing.nit:1617 */
+    /* syntax/typing.nit:1803 */
     fra.me.REG[1] = CALL_parser___parser_nodes___ABinopExpr___n_expr2(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1618 */
+      /* syntax/typing.nit:1804 */
       fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
       CALL_syntax___typing___ANeExpr___try_to_isa(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1]);
     }
@@ -10251,6 +11487,7 @@ void syntax___typing___ANeExpr___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ANeExpr___try_to_isa[] = "typing::ANeExpr::try_to_isa";
 void syntax___typing___ANeExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -10258,10 +11495,11 @@ void syntax___typing___ANeExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1622;
+  fra.me.line = 1808;
   fra.me.meth = LOCATE_syntax___typing___ANeExpr___try_to_isa;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -10270,15 +11508,15 @@ void syntax___typing___ANeExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:1624 */
+  /* syntax/typing.nit:1810 */
   fra.me.REG[3] = CALL_syntax___typing___AExpr___its_variable(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1625 */
+  /* syntax/typing.nit:1811 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -10290,17 +11528,17 @@ void syntax___typing___ANeExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
     fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
     REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[4], COLOR_metamodel___static_type___MMNullableType, ID_metamodel___static_type___MMNullableType)) /*cast MMNullableType*/;
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1626 */
+    /* syntax/typing.nit:1812 */
     fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[2] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], fra.me.REG[3], fra.me.REG[2]);
     ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[2];
-    /* ./syntax//typing.nit:1627 */
+    /* syntax/typing.nit:1813 */
     fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_none(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[1] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[3], fra.me.REG[1]);
@@ -10309,6 +11547,7 @@ void syntax___typing___ANeExpr___try_to_isa(val_t p0, val_t p1, val_t p2){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ALtExpr___name[] = "typing::ALtExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ALtExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10317,13 +11556,14 @@ val_t syntax___typing___ALtExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1632;
+  fra.me.line = 1818;
   fra.me.meth = LOCATE_syntax___typing___ALtExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1632 */
+  /* syntax/typing.nit:1818 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("<");
@@ -10333,7 +11573,7 @@ val_t syntax___typing___ALtExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10343,6 +11583,7 @@ val_t syntax___typing___ALtExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ALeExpr___name[] = "typing::ALeExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ALeExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10351,13 +11592,14 @@ val_t syntax___typing___ALeExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1635;
+  fra.me.line = 1821;
   fra.me.meth = LOCATE_syntax___typing___ALeExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1635 */
+  /* syntax/typing.nit:1821 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("<=");
@@ -10367,7 +11609,7 @@ val_t syntax___typing___ALeExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10377,6 +11619,7 @@ val_t syntax___typing___ALeExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ALlExpr___name[] = "typing::ALlExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ALlExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10385,13 +11628,14 @@ val_t syntax___typing___ALlExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1638;
+  fra.me.line = 1824;
   fra.me.meth = LOCATE_syntax___typing___ALlExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1638 */
+  /* syntax/typing.nit:1824 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("<<");
@@ -10401,7 +11645,7 @@ val_t syntax___typing___ALlExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10411,6 +11655,7 @@ val_t syntax___typing___ALlExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AGtExpr___name[] = "typing::AGtExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AGtExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10419,13 +11664,14 @@ val_t syntax___typing___AGtExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1641;
+  fra.me.line = 1827;
   fra.me.meth = LOCATE_syntax___typing___AGtExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1641 */
+  /* syntax/typing.nit:1827 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString(">");
@@ -10435,7 +11681,7 @@ val_t syntax___typing___AGtExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10445,6 +11691,7 @@ val_t syntax___typing___AGtExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AGeExpr___name[] = "typing::AGeExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AGeExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10453,13 +11700,14 @@ val_t syntax___typing___AGeExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1644;
+  fra.me.line = 1830;
   fra.me.meth = LOCATE_syntax___typing___AGeExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1644 */
+  /* syntax/typing.nit:1830 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString(">=");
@@ -10469,7 +11717,7 @@ val_t syntax___typing___AGeExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10479,6 +11727,7 @@ val_t syntax___typing___AGeExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AGgExpr___name[] = "typing::AGgExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AGgExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10487,13 +11736,14 @@ val_t syntax___typing___AGgExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1647;
+  fra.me.line = 1833;
   fra.me.meth = LOCATE_syntax___typing___AGgExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1647 */
+  /* syntax/typing.nit:1833 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString(">>");
@@ -10503,7 +11753,7 @@ val_t syntax___typing___AGgExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10513,6 +11763,7 @@ val_t syntax___typing___AGgExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___APlusExpr___name[] = "typing::APlusExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___APlusExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10521,13 +11772,14 @@ val_t syntax___typing___APlusExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1650;
+  fra.me.line = 1836;
   fra.me.meth = LOCATE_syntax___typing___APlusExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1650 */
+  /* syntax/typing.nit:1836 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("+");
@@ -10537,7 +11789,7 @@ val_t syntax___typing___APlusExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10547,6 +11799,7 @@ val_t syntax___typing___APlusExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AMinusExpr___name[] = "typing::AMinusExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AMinusExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10555,13 +11808,14 @@ val_t syntax___typing___AMinusExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1653;
+  fra.me.line = 1839;
   fra.me.meth = LOCATE_syntax___typing___AMinusExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1653 */
+  /* syntax/typing.nit:1839 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("-");
@@ -10571,7 +11825,7 @@ val_t syntax___typing___AMinusExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10581,6 +11835,7 @@ val_t syntax___typing___AMinusExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AStarshipExpr___name[] = "typing::AStarshipExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AStarshipExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10589,13 +11844,14 @@ val_t syntax___typing___AStarshipExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1656;
+  fra.me.line = 1842;
   fra.me.meth = LOCATE_syntax___typing___AStarshipExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1656 */
+  /* syntax/typing.nit:1842 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("<=>");
@@ -10605,7 +11861,7 @@ val_t syntax___typing___AStarshipExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10615,6 +11871,7 @@ val_t syntax___typing___AStarshipExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AStarExpr___name[] = "typing::AStarExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AStarExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10623,13 +11880,14 @@ val_t syntax___typing___AStarExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1659;
+  fra.me.line = 1845;
   fra.me.meth = LOCATE_syntax___typing___AStarExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1659 */
+  /* syntax/typing.nit:1845 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("*");
@@ -10639,7 +11897,7 @@ val_t syntax___typing___AStarExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10649,6 +11907,7 @@ val_t syntax___typing___AStarExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ASlashExpr___name[] = "typing::ASlashExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ASlashExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10657,13 +11916,14 @@ val_t syntax___typing___ASlashExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1662;
+  fra.me.line = 1848;
   fra.me.meth = LOCATE_syntax___typing___ASlashExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1662 */
+  /* syntax/typing.nit:1848 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("/");
@@ -10673,7 +11933,7 @@ val_t syntax___typing___ASlashExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10683,6 +11943,7 @@ val_t syntax___typing___ASlashExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___APercentExpr___name[] = "typing::APercentExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___APercentExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10691,13 +11952,14 @@ val_t syntax___typing___APercentExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1665;
+  fra.me.line = 1851;
   fra.me.meth = LOCATE_syntax___typing___APercentExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1665 */
+  /* syntax/typing.nit:1851 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("%");
@@ -10707,7 +11969,7 @@ val_t syntax___typing___APercentExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10717,6 +11979,7 @@ val_t syntax___typing___APercentExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AUminusExpr___name[] = "typing::AUminusExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AUminusExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -10725,13 +11988,14 @@ val_t syntax___typing___AUminusExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1669;
+  fra.me.line = 1855;
   fra.me.meth = LOCATE_syntax___typing___AUminusExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1669 */
+  /* syntax/typing.nit:1855 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("unary -");
@@ -10741,7 +12005,7 @@ val_t syntax___typing___AUminusExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -10751,24 +12015,27 @@ val_t syntax___typing___AUminusExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AUminusExpr___compute_raw_arguments[] = "typing::AUminusExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___AUminusExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1670;
+  fra.me.line = 1856;
   fra.me.meth = LOCATE_syntax___typing___AUminusExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1670 */
+  /* syntax/typing.nit:1856 */
   fra.me.REG[0] = NIT_NULL;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallFormExpr___after_typing[] = "typing::ACallFormExpr::(typing::ANode::after_typing)";
 void syntax___typing___ACallFormExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[8];} fra;
   val_t REGB0;
@@ -10778,10 +12045,11 @@ void syntax___typing___ACallFormExpr___after_typing(val_t p0, val_t p1){
           static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1674;
+  fra.me.line = 1860;
   fra.me.meth = LOCATE_syntax___typing___ACallFormExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 9;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -10793,26 +12061,26 @@ void syntax___typing___ACallFormExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[8] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1674 */
+  /* syntax/typing.nit:1860 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:1676 */
+  /* syntax/typing.nit:1862 */
   fra.me.REG[4] = CALL_parser___parser_nodes___ASendExpr___n_expr(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_syntax___typing___AExpr___is_implicit_self(fra.me.REG[4])(fra.me.REG[4]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1677 */
+    /* syntax/typing.nit:1863 */
     fra.me.REG[4] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[2])(fra.me.REG[2]);
     fra.me.REG[4] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
-    /* ./syntax//typing.nit:1678 */
+    /* syntax/typing.nit:1864 */
     fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[3])(fra.me.REG[3]);
     fra.me.REG[5] = CALL_syntax___scope___ScopeContext_____bra(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    /* ./syntax//typing.nit:1679 */
+    /* syntax/typing.nit:1865 */
     REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
@@ -10821,23 +12089,31 @@ void syntax___typing___ACallFormExpr___after_typing(val_t p0, val_t p1){
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1681 */
+      /* syntax/typing.nit:1867 */
       REGB0 = TAG_Bool((fra.me.REG[5]!=NIT_NULL) && VAL_ISA(fra.me.REG[5], COLOR_syntax___syntax_base___ClosureVariable, ID_syntax___syntax_base___ClosureVariable)) /*cast ClosureVariable*/;
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1682 */
+        /* syntax/typing.nit:1868 */
         fra.me.REG[6] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[2])(fra.me.REG[2]);
         fra.me.REG[7] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[2])(fra.me.REG[2]);
         fra.me.REG[8] = CALL_parser___parser_nodes___ASendExpr___n_closure_defs(fra.me.REG[2])(fra.me.REG[2]);
         fra.me.REG[8] = NEW_AClosureCallExpr_parser___parser_prod___AClosureCallExpr___init_aclosurecallexpr(fra.me.REG[6], fra.me.REG[7], fra.me.REG[8]);
-        /* ./syntax//typing.nit:1683 */
+        /* syntax/typing.nit:1869 */
         ATTR_syntax___typing___AClosureCallExpr____variable(fra.me.REG[8]) = fra.me.REG[5];
       } else {
-        /* ./syntax//typing.nit:1685 */
+        /* syntax/typing.nit:1871 */
         fra.me.REG[7] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[2])(fra.me.REG[2]);
+        fra.me.REG[7] = CALL_parser___parser_nodes___AExprs___n_exprs(fra.me.REG[7])(fra.me.REG[7]);
         REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[7])(fra.me.REG[7]);
         REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
         if (UNTAG_Bool(REGB0)) {
-          /* ./syntax//typing.nit:1686 */
+          REGB0 = TAG_Bool(1);
+        } else {
+          fra.me.REG[7] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[2])(fra.me.REG[2]);
+          REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[7], COLOR_parser___parser_nodes___AParExprs, ID_parser___parser_nodes___AParExprs)) /*cast AParExprs*/;
+          REGB0 = REGB1;
+        }
+        if (UNTAG_Bool(REGB0)) {
+          /* syntax/typing.nit:1872 */
           REGB0 = TAG_Int(3);
           fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
           if (!once_value_1) {
@@ -10862,51 +12138,53 @@ void syntax___typing___ACallFormExpr___after_typing(val_t p0, val_t p1){
           CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[4]);
           fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
           CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[7]);
-          /* ./syntax//typing.nit:1687 */
+          /* syntax/typing.nit:1873 */
           goto label3;
         }
-        /* ./syntax//typing.nit:1689 */
+        /* syntax/typing.nit:1875 */
         fra.me.REG[7] = CALL_syntax___typing___ACallFormExpr___variable_create(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
         fra.me.REG[8] = fra.me.REG[7];
-        /* ./syntax//typing.nit:1690 */
+        /* syntax/typing.nit:1876 */
         ATTR_syntax___typing___AVarFormExpr____variable(fra.me.REG[8]) = fra.me.REG[5];
       }
-      /* ./syntax//typing.nit:1692 */
+      /* syntax/typing.nit:1878 */
       CALL_parser___parser_prod___ANode___replace_with(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[8]);
-      /* ./syntax//typing.nit:1693 */
+      /* syntax/typing.nit:1879 */
       CALL_syntax___typing___ANode___after_typing(fra.me.REG[8])(fra.me.REG[8], fra.me.REG[3]);
-      /* ./syntax//typing.nit:1694 */
+      /* syntax/typing.nit:1880 */
       goto label3;
     }
   }
-  /* ./syntax//typing.nit:1698 */
+  /* syntax/typing.nit:1884 */
   CALL_SUPER_syntax___typing___ACallFormExpr___after_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   label3: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ACallFormExpr___closure_defs[] = "typing::ACallFormExpr::(syntax_base::ASendExpr::closure_defs)";
 val_t syntax___typing___ACallFormExpr___closure_defs(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1701;
+  fra.me.line = 1887;
   fra.me.meth = LOCATE_syntax___typing___ACallFormExpr___closure_defs;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1703 */
+  /* syntax/typing.nit:1889 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1704 */
+    /* syntax/typing.nit:1890 */
     fra.me.REG[1] = NIT_NULL;
     goto label1;
   } else {
-    /* ./syntax//typing.nit:1706 */
+    /* syntax/typing.nit:1892 */
     fra.me.REG[0] = CALL_parser___parser_nodes___ASendExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[1] = fra.me.REG[0];
@@ -10916,34 +12194,38 @@ val_t syntax___typing___ACallFormExpr___closure_defs(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ACallFormExpr___variable_create[] = "typing::ACallFormExpr::variable_create";
 val_t syntax___typing___ACallFormExpr___variable_create(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1710;
+  fra.me.line = 1896;
   fra.me.meth = LOCATE_syntax___typing___ACallFormExpr___variable_create;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./syntax//typing.nit:1710 */
-  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1710);
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1896 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1896);
   stack_frame_head = fra.me.prev;
   return NIT_NULL;
 }
+static const char LOCATE_syntax___typing___ACallExpr___variable_create[] = "typing::ACallExpr::(typing::ACallFormExpr::variable_create)";
 val_t syntax___typing___ACallExpr___variable_create(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1715;
+  fra.me.line = 1901;
   fra.me.meth = LOCATE_syntax___typing___ACallExpr___variable_create;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1717 */
+  /* syntax/typing.nit:1903 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = NEW_AVarExpr_parser___parser_prod___AVarExpr___init_avarexpr(fra.me.REG[0]);
   goto label1;
@@ -10951,18 +12233,20 @@ val_t syntax___typing___ACallExpr___variable_create(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallExpr___name[] = "typing::ACallExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ACallExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1720;
+  fra.me.line = 1906;
   fra.me.meth = LOCATE_syntax___typing___ACallExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1720 */
+  /* syntax/typing.nit:1906 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -10970,40 +12254,44 @@ val_t syntax___typing___ACallExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallExpr___compute_raw_arguments[] = "typing::ACallExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ACallExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1721;
+  fra.me.line = 1907;
   fra.me.meth = LOCATE_syntax___typing___ACallExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1721 */
+  /* syntax/typing.nit:1907 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallAssignExpr___variable_create[] = "typing::ACallAssignExpr::(typing::ACallFormExpr::variable_create)";
 val_t syntax___typing___ACallAssignExpr___variable_create(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1725;
+  fra.me.line = 1911;
   fra.me.meth = LOCATE_syntax___typing___ACallAssignExpr___variable_create;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1727 */
+  /* syntax/typing.nit:1913 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_parser___parser_nodes___AAssignFormExpr___n_assign(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
@@ -11013,6 +12301,7 @@ val_t syntax___typing___ACallAssignExpr___variable_create(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallAssignExpr___name[] = "typing::ACallAssignExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ACallAssignExpr___name(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -11020,16 +12309,17 @@ val_t syntax___typing___ACallAssignExpr___name(val_t p0){
   static val_t once_value_1; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1730;
+  fra.me.line = 1916;
   fra.me.meth = LOCATE_syntax___typing___ACallAssignExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1730 */
+  /* syntax/typing.nit:1916 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_parser___lexer___Token___text(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_parser___parser_nodes___Token___text(fra.me.REG[0])(fra.me.REG[0]);
   if (!once_value_1) {
     fra.me.REG[1] = BOX_NativeString("=");
     REGB0 = TAG_Int(1);
@@ -11039,51 +12329,55 @@ val_t syntax___typing___ACallAssignExpr___name(val_t p0){
   } else fra.me.REG[1] = once_value_1;
   fra.me.REG[1] = fra.me.REG[1];
   fra.me.REG[1] = CALL_standard___string___String_____plus(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  fra.me.REG[1] = CALL_standard___symbol___String___to_symbol(fra.me.REG[1])(fra.me.REG[1]);
+  fra.me.REG[1] = CALL_symbol___String___to_symbol(fra.me.REG[1])(fra.me.REG[1]);
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ACallAssignExpr___compute_raw_arguments[] = "typing::ACallAssignExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ACallAssignExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1731;
+  fra.me.line = 1917;
   fra.me.meth = LOCATE_syntax___typing___ACallAssignExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1732 */
+  /* syntax/typing.nit:1918 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1733 */
+  fra.me.REG[1] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[1])(fra.me.REG[1]);
+  /* syntax/typing.nit:1919 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:1734 */
+  /* syntax/typing.nit:1920 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ACallReassignExpr___variable_create[] = "typing::ACallReassignExpr::(typing::ACallFormExpr::variable_create)";
 val_t syntax___typing___ACallReassignExpr___variable_create(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1739;
+  fra.me.line = 1925;
   fra.me.meth = LOCATE_syntax___typing___ACallReassignExpr___variable_create;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1741 */
+  /* syntax/typing.nit:1927 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_parser___parser_nodes___AReassignFormExpr___n_assign_op(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_parser___parser_nodes___AReassignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
@@ -11093,18 +12387,20 @@ val_t syntax___typing___ACallReassignExpr___variable_create(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallReassignExpr___name[] = "typing::ACallReassignExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ACallReassignExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1744;
+  fra.me.line = 1930;
   fra.me.meth = LOCATE_syntax___typing___ACallReassignExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1744 */
+  /* syntax/typing.nit:1930 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -11112,25 +12408,28 @@ val_t syntax___typing___ACallReassignExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ACallReassignExpr___compute_raw_arguments[] = "typing::ACallReassignExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ACallReassignExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1745;
+  fra.me.line = 1931;
   fra.me.meth = LOCATE_syntax___typing___ACallReassignExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1745 */
+  /* syntax/typing.nit:1931 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ACallFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABraExpr___name[] = "typing::ABraExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ABraExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -11139,13 +12438,14 @@ val_t syntax___typing___ABraExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1749;
+  fra.me.line = 1935;
   fra.me.meth = LOCATE_syntax___typing___ABraExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1749 */
+  /* syntax/typing.nit:1935 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("[]");
@@ -11155,7 +12455,7 @@ val_t syntax___typing___ABraExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -11165,47 +12465,51 @@ val_t syntax___typing___ABraExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABraExpr___compute_raw_arguments[] = "typing::ABraExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ABraExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1750;
+  fra.me.line = 1936;
   fra.me.meth = LOCATE_syntax___typing___ABraExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1750 */
+  /* syntax/typing.nit:1936 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ABraFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABraExpr___closure_defs[] = "typing::ABraExpr::(syntax_base::ASendExpr::closure_defs)";
 val_t syntax___typing___ABraExpr___closure_defs(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1751;
+  fra.me.line = 1937;
   fra.me.meth = LOCATE_syntax___typing___ABraExpr___closure_defs;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1753 */
+  /* syntax/typing.nit:1939 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ASendExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1754 */
+    /* syntax/typing.nit:1940 */
     fra.me.REG[1] = NIT_NULL;
     goto label1;
   } else {
-    /* ./syntax//typing.nit:1756 */
+    /* syntax/typing.nit:1942 */
     fra.me.REG[0] = CALL_parser___parser_nodes___ASendExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[1] = fra.me.REG[0];
@@ -11215,6 +12519,7 @@ val_t syntax___typing___ABraExpr___closure_defs(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ABraAssignExpr___name[] = "typing::ABraAssignExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ABraAssignExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -11223,13 +12528,14 @@ val_t syntax___typing___ABraAssignExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1762;
+  fra.me.line = 1948;
   fra.me.meth = LOCATE_syntax___typing___ABraAssignExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1762 */
+  /* syntax/typing.nit:1948 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("[]=");
@@ -11239,7 +12545,7 @@ val_t syntax___typing___ABraAssignExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -11249,30 +12555,33 @@ val_t syntax___typing___ABraAssignExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABraAssignExpr___compute_raw_arguments[] = "typing::ABraAssignExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ABraAssignExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1763;
+  fra.me.line = 1949;
   fra.me.meth = LOCATE_syntax___typing___ABraAssignExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1764 */
+  /* syntax/typing.nit:1950 */
   fra.me.REG[1] = CALL_parser___parser_nodes___ABraFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1765 */
+  fra.me.REG[1] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[1])(fra.me.REG[1]);
+  /* syntax/typing.nit:1951 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AAssignFormExpr___n_value(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./syntax//typing.nit:1766 */
+  /* syntax/typing.nit:1952 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___ABraReassignExpr___name[] = "typing::ABraReassignExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___ABraReassignExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -11281,13 +12590,14 @@ val_t syntax___typing___ABraReassignExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1771;
+  fra.me.line = 1957;
   fra.me.meth = LOCATE_syntax___typing___ABraReassignExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1771 */
+  /* syntax/typing.nit:1957 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("[]");
@@ -11297,7 +12607,7 @@ val_t syntax___typing___ABraReassignExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -11307,25 +12617,28 @@ val_t syntax___typing___ABraReassignExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABraReassignExpr___compute_raw_arguments[] = "typing::ABraReassignExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___ABraReassignExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1772;
+  fra.me.line = 1958;
   fra.me.meth = LOCATE_syntax___typing___ABraReassignExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1772 */
+  /* syntax/typing.nit:1958 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ABraFormExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AInitExpr___name[] = "typing::AInitExpr::(typing::ASendExpr::name)";
 val_t syntax___typing___AInitExpr___name(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -11334,13 +12647,14 @@ val_t syntax___typing___AInitExpr___name(val_t p0){
     static val_t once_value_2; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1776;
+  fra.me.line = 1962;
   fra.me.meth = LOCATE_syntax___typing___AInitExpr___name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1776 */
+  /* syntax/typing.nit:1962 */
   if (!once_value_1) {
     if (!once_value_2) {
       fra.me.REG[0] = BOX_NativeString("init");
@@ -11350,7 +12664,7 @@ val_t syntax___typing___AInitExpr___name(val_t p0){
       register_static_object(&once_value_2);
     } else fra.me.REG[0] = once_value_2;
     fra.me.REG[0] = fra.me.REG[0];
-    fra.me.REG[0] = CALL_standard___symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
+    fra.me.REG[0] = CALL_symbol___String___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
     once_value_1 = fra.me.REG[0];
     register_static_object(&once_value_1);
   } else fra.me.REG[0] = once_value_1;
@@ -11360,70 +12674,77 @@ val_t syntax___typing___AInitExpr___name(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AInitExpr___compute_raw_arguments[] = "typing::AInitExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___AInitExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1777;
+  fra.me.line = 1963;
   fra.me.meth = LOCATE_syntax___typing___AInitExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1777 */
+  /* syntax/typing.nit:1963 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AInitExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AClosureCallExpr___variable[] = "typing::AClosureCallExpr::(syntax_base::AClosureCallExpr::variable)";
 val_t syntax___typing___AClosureCallExpr___variable(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1782;
+  fra.me.line = 1968;
   fra.me.meth = LOCATE_syntax___typing___AClosureCallExpr___variable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1782 */
+  /* syntax/typing.nit:1968 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AClosureCallExpr____variable(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1782);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1968);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AClosureCallExpr___compute_raw_arguments[] = "typing::AClosureCallExpr::(typing::AAbsAbsSendExpr::compute_raw_arguments)";
 val_t syntax___typing___AClosureCallExpr___compute_raw_arguments(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1783;
+  fra.me.line = 1969;
   fra.me.meth = LOCATE_syntax___typing___AClosureCallExpr___compute_raw_arguments;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1783 */
+  /* syntax/typing.nit:1969 */
   fra.me.REG[0] = CALL_parser___parser_nodes___AClosureCallExpr___n_args(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___syntax_base___AExprs___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AClosureCallExpr___after_typing[] = "typing::AClosureCallExpr::(typing::ANode::after_typing)";
 void syntax___typing___AClosureCallExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -11431,10 +12752,11 @@ void syntax___typing___AClosureCallExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1785;
+  fra.me.line = 1971;
   fra.me.meth = LOCATE_syntax___typing___AClosureCallExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -11442,77 +12764,81 @@ void syntax___typing___AClosureCallExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1787 */
+  /* syntax/typing.nit:1973 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AClosureCallExpr___variable(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./syntax//typing.nit:1788 */
+  /* syntax/typing.nit:1974 */
   fra.me.REG[3] = CALL_syntax___syntax_base___ClosureVariable___closure(fra.me.REG[2])(fra.me.REG[2]);
   REGB0 = CALL_metamodel___static_type___MMClosure___is_break(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
     CALL_syntax___typing___TypingVisitor___mark_unreash(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
   }
-  /* ./syntax//typing.nit:1789 */
+  /* syntax/typing.nit:1975 */
   fra.me.REG[2] = CALL_syntax___syntax_base___ClosureVariable___closure(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[2] = CALL_metamodel___static_type___MMClosure___signature(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1790 */
+  /* syntax/typing.nit:1976 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AClosureCallExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[4] = CALL_syntax___typing___AAbsAbsSendExpr___compute_raw_arguments(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___typing___AAbsAbsSendExpr___process_signature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], fra.me.REG[4]);
-  /* ./syntax//typing.nit:1791 */
+  /* syntax/typing.nit:1977 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AClosureCallExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[4])(fra.me.REG[4]);
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1792 */
+    /* syntax/typing.nit:1978 */
     fra.me.REG[4] = CALL_parser___parser_nodes___AClosureCallExpr___n_id(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[4] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[4])(fra.me.REG[4]);
     fra.me.REG[3] = CALL_parser___parser_nodes___AClosureCallExpr___n_closure_defs(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[3] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[3])(fra.me.REG[3]);
     CALL_syntax___typing___AAbsAbsSendExpr___process_closures(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[4], fra.me.REG[3]);
   }
-  /* ./syntax//typing.nit:1794 */
+  /* syntax/typing.nit:1980 */
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1795 */
+  /* syntax/typing.nit:1981 */
   ATTR_syntax___typing___AAbsAbsSendExpr____prop_signature(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1796 */
+  /* syntax/typing.nit:1982 */
   fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[2])(fra.me.REG[2]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1797 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:1983 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AClosureId___to_symbol[] = "typing::AClosureId::to_symbol";
 val_t syntax___typing___AClosureId___to_symbol(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1802;
+  fra.me.line = 1988;
   fra.me.meth = LOCATE_syntax___typing___AClosureId___to_symbol;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./syntax//typing.nit:1802 */
-  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1802);
+  fra.me.nitni_local_ref_head = NULL;
+  /* syntax/typing.nit:1988 */
+  nit_abort("Deferred method called", NULL, LOCATE_syntax___typing, 1988);
   stack_frame_head = fra.me.prev;
   return NIT_NULL;
 }
+static const char LOCATE_syntax___typing___ASimpleClosureId___to_symbol[] = "typing::ASimpleClosureId::(typing::AClosureId::to_symbol)";
 val_t syntax___typing___ASimpleClosureId___to_symbol(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1805;
+  fra.me.line = 1991;
   fra.me.meth = LOCATE_syntax___typing___ASimpleClosureId___to_symbol;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1805 */
+  /* syntax/typing.nit:1991 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ASimpleClosureId___n_id(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -11520,18 +12846,20 @@ val_t syntax___typing___ASimpleClosureId___to_symbol(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___ABreakClosureId___to_symbol[] = "typing::ABreakClosureId::(typing::AClosureId::to_symbol)";
 val_t syntax___typing___ABreakClosureId___to_symbol(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1808;
+  fra.me.line = 1994;
   fra.me.meth = LOCATE_syntax___typing___ABreakClosureId___to_symbol;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1808 */
+  /* syntax/typing.nit:1994 */
   fra.me.REG[0] = CALL_parser___parser_nodes___ABreakClosureId___n_kwbreak(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -11539,70 +12867,76 @@ val_t syntax___typing___ABreakClosureId___to_symbol(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AClosureDef___closure[] = "typing::AClosureDef::(syntax_base::AClosureDef::closure)";
 val_t syntax___typing___AClosureDef___closure(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1813;
+  fra.me.line = 1999;
   fra.me.meth = LOCATE_syntax___typing___AClosureDef___closure;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1813 */
+  /* syntax/typing.nit:1999 */
   fra.me.REG[1] = fra.me.REG[0];
   fra.me.REG[1] = ATTR_syntax___typing___AClosureDef____closure(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1813);
+    nit_abort("Cast failed", NULL, LOCATE_syntax___typing, 1999);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___typing___AClosureDef___escapable[] = "typing::AClosureDef::escapable";
 val_t syntax___typing___AClosureDef___escapable(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1815;
+  fra.me.line = 2001;
   fra.me.meth = LOCATE_syntax___typing___AClosureDef___escapable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//typing.nit:1815 */
+  /* syntax/typing.nit:2001 */
   fra.me.REG[0] = ATTR_syntax___typing___AClosureDef____escapable(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___typing___AClosureDef___accept_typing[] = "typing::AClosureDef::(typing::ANode::accept_typing)";
 void syntax___typing___AClosureDef___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1819;
+  fra.me.line = 2005;
   fra.me.meth = LOCATE_syntax___typing___AClosureDef___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1819 */
+  /* syntax/typing.nit:2005 */
   fra.me.REG[2] = fra.me.REG[0];
-  /* ./syntax//typing.nit:1822 */
+  /* syntax/typing.nit:2008 */
   REGB0 = TAG_Bool(ATTR_syntax___typing___AClosureDef____accept_typing2(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_accept_typing2", LOCATE_syntax___typing, 1822);
+    nit_abort("Uninitialized attribute %s", "_accept_typing2", LOCATE_syntax___typing, 2008);
   }
   REGB0 = ATTR_syntax___typing___AClosureDef____accept_typing2(fra.me.REG[2]);
   if (UNTAG_Bool(REGB0)) {
@@ -11611,6 +12945,7 @@ void syntax___typing___AClosureDef___accept_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AClosureDef___accept_typing2[] = "typing::AClosureDef::accept_typing2";
 void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
   val_t REGB0;
@@ -11625,10 +12960,11 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
         static val_t once_value_7; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1825;
+  fra.me.line = 2011;
   fra.me.meth = LOCATE_syntax___typing___AClosureDef___accept_typing2;
   fra.me.has_broke = 0;
   fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -11640,26 +12976,26 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//typing.nit:1827 */
+  /* syntax/typing.nit:2013 */
   ATTR_syntax___typing___AClosureDef____escapable(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./syntax//typing.nit:1829 */
+  /* syntax/typing.nit:2015 */
   fra.me.REG[3] = CALL_syntax___scope___EscapableClosure___closure(fra.me.REG[2])(fra.me.REG[2]);
   fra.me.REG[3] = CALL_metamodel___static_type___MMClosure___signature(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1830 */
+  /* syntax/typing.nit:2016 */
   REGB0 = CALL_metamodel___static_type___MMSignature___arity(fra.me.REG[3])(fra.me.REG[3]);
   fra.me.REG[4] = CALL_parser___parser_nodes___AClosureDef___n_ids(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[4])(fra.me.REG[4]);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./syntax//typing.nit:1830 */
+    /* syntax/typing.nit:2016 */
     REGB2 = REGB1;
   }
   REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
   if (UNTAG_Bool(REGB2)) {
-    /* ./syntax//typing.nit:1831 */
+    /* syntax/typing.nit:2017 */
     REGB2 = TAG_Int(5);
     fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
     if (!once_value_1) {
@@ -11698,97 +13034,97 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
     fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
-    /* ./syntax//typing.nit:1832 */
+    /* syntax/typing.nit:2018 */
     goto label4;
   }
-  /* ./syntax//typing.nit:1835 */
+  /* syntax/typing.nit:2021 */
   fra.me.REG[4] = CALL_syntax___scope___EscapableClosure___closure(fra.me.REG[2])(fra.me.REG[2]);
   ATTR_syntax___typing___AClosureDef____closure(fra.me.REG[0]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:1837 */
+  /* syntax/typing.nit:2023 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___push(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0]);
-  /* ./syntax//typing.nit:1838 */
+  /* syntax/typing.nit:2024 */
   fra.me.REG[4] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1839 */
+  /* syntax/typing.nit:2025 */
   fra.me.REG[5] = CALL_syntax___typing___TypingVisitor___base_flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./syntax//typing.nit:1840 */
+  /* syntax/typing.nit:2026 */
   fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[6]);
-  /* ./syntax//typing.nit:1841 */
+  /* syntax/typing.nit:2027 */
   fra.me.REG[6] = NEW_Array_standard___collection___array___Array___init();
   CALL_syntax___syntax_base___AClosureDef___variables__eq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[6]);
-  /* ./syntax//typing.nit:1842 */
+  /* syntax/typing.nit:2028 */
   REGB2 = TAG_Int(0);
   fra.me.REG[6] = CALL_parser___parser_nodes___AClosureDef___n_ids(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[6])(fra.me.REG[6]);
-  /* ./../lib/standard//kernel.nit:335 */
+  /* ../lib/standard/kernel.nit:355 */
   while(1) {
     REGB0 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB0)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB1));
-    /* ./../lib/standard//kernel.nit:335 */
+    /* ../lib/standard/kernel.nit:355 */
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1842 */
+      /* syntax/typing.nit:2028 */
       REGB0 = REGB2;
-      /* ./syntax//typing.nit:1843 */
+      /* syntax/typing.nit:2029 */
       fra.me.REG[6] = CALL_parser___parser_nodes___AClosureDef___n_ids(fra.me.REG[0])(fra.me.REG[0]);
       fra.me.REG[6] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[6])(fra.me.REG[6], REGB0);
       REGB3 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
-        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1843);
+        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 2029);
       }
       fra.me.REG[6] = CALL_syntax___syntax_base___Token___to_symbol(fra.me.REG[6])(fra.me.REG[6]);
       fra.me.REG[7] = CALL_parser___parser_nodes___AClosureDef___n_ids(fra.me.REG[0])(fra.me.REG[0]);
       fra.me.REG[7] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[7])(fra.me.REG[7], REGB0);
       fra.me.REG[7] = NEW_AutoVariable_syntax___syntax_base___AutoVariable___init(fra.me.REG[6], fra.me.REG[7]);
-      /* ./syntax//typing.nit:1844 */
+      /* syntax/typing.nit:2030 */
       fra.me.REG[6] = CALL_syntax___syntax_base___AClosureDef___variables(fra.me.REG[0])(fra.me.REG[0]);
       REGB3 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
-        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 1844);
+        nit_abort("Reciever is null", NULL, LOCATE_syntax___typing, 2030);
       }
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-      /* ./syntax//typing.nit:1845 */
+      /* syntax/typing.nit:2031 */
       fra.me.REG[6] = CALL_metamodel___static_type___MMSignature_____bra(fra.me.REG[3])(fra.me.REG[3], REGB0);
       CALL_syntax___syntax_base___Variable___stype__eq(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[6]);
-      /* ./syntax//typing.nit:1846 */
+      /* syntax/typing.nit:2032 */
       fra.me.REG[6] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
       CALL_syntax___scope___ScopeContext___add_variable(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB0 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB0 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB0));
-      /* ./../lib/standard//kernel.nit:337 */
+      /* ../lib/standard/kernel.nit:357 */
       REGB2 = REGB0;
     } else {
-      /* ./../lib/standard//kernel.nit:335 */
+      /* ../lib/standard/kernel.nit:355 */
       goto label5;
     }
   }
   label5: while(0);
-  /* ./syntax//typing.nit:1849 */
-  REGB2 = TAG_Bool(true);
+  /* syntax/typing.nit:2035 */
+  REGB2 = TAG_Bool(1);
   ATTR_syntax___typing___AClosureDef____accept_typing2(fra.me.REG[0]) = REGB2;
-  /* ./syntax//typing.nit:1850 */
+  /* syntax/typing.nit:2036 */
   CALL_syntax___typing___ANode___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1852 */
+  /* syntax/typing.nit:2038 */
   fra.me.REG[3] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
   REGB2 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[3])(fra.me.REG[3]);
-  REGB1 = TAG_Bool(false);
+  REGB1 = TAG_Bool(0);
   REGB0 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB1));
   if (UNTAG_Bool(REGB0)) {
   } else {
-    /* ./../lib/standard//kernel.nit:178 */
+    /* ../lib/standard/kernel.nit:198 */
     REGB1 = TAG_Bool((REGB2)==(REGB1));
-    /* ./syntax//typing.nit:1852 */
+    /* syntax/typing.nit:2038 */
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1853 */
+    /* syntax/typing.nit:2039 */
     fra.me.REG[3] = CALL_syntax___syntax_base___AClosureDef___closure(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[3] = CALL_metamodel___static_type___MMClosure___signature(fra.me.REG[3])(fra.me.REG[3]);
     fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[3])(fra.me.REG[3]);
@@ -11797,7 +13133,7 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
     } else {
       REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -11806,7 +13142,7 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1854 */
+      /* syntax/typing.nit:2040 */
       if (!once_value_6) {
         fra.me.REG[3] = BOX_NativeString("Control error: Reached end of block (a 'continue' with a value was expected).");
         REGB0 = TAG_Int(77);
@@ -11817,7 +13153,7 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
       fra.me.REG[3] = fra.me.REG[3];
       CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
     } else {
-      /* ./syntax//typing.nit:1855 */
+      /* syntax/typing.nit:2041 */
       fra.me.REG[3] = CALL_syntax___syntax_base___AClosureDef___closure(fra.me.REG[0])(fra.me.REG[0]);
       REGB0 = CALL_metamodel___static_type___MMClosure___is_break(fra.me.REG[3])(fra.me.REG[3]);
       if (UNTAG_Bool(REGB0)) {
@@ -11827,7 +13163,7 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
         } else {
           REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
-            REGB1 = TAG_Bool(false);
+            REGB1 = TAG_Bool(0);
             REGB0 = REGB1;
           } else {
             REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -11836,11 +13172,11 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
         }
         REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       } else {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1856 */
+        /* syntax/typing.nit:2042 */
         if (!once_value_7) {
           fra.me.REG[2] = BOX_NativeString("Control error: Reached end of break block (a 'break' with a value was expected).");
           REGB0 = TAG_Int(80);
@@ -11853,17 +13189,18 @@ void syntax___typing___AClosureDef___accept_typing2(val_t p0, val_t p1, val_t p2
       }
     }
   }
-  /* ./syntax//typing.nit:1859 */
+  /* syntax/typing.nit:2045 */
   CALL_syntax___typing___TypingVisitor___flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  /* ./syntax//typing.nit:1860 */
+  /* syntax/typing.nit:2046 */
   CALL_syntax___typing___TypingVisitor___base_flow_ctx__eq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5]);
-  /* ./syntax//typing.nit:1861 */
+  /* syntax/typing.nit:2047 */
   fra.me.REG[1] = CALL_syntax___typing___TypingVisitor___scope_ctx(fra.me.REG[1])(fra.me.REG[1]);
   CALL_syntax___scope___ScopeContext___pop(fra.me.REG[1])(fra.me.REG[1]);
   label4: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ATypeCheckExpr___check_expr_cast[] = "typing::ATypeCheckExpr::check_expr_cast";
 void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_t p2, val_t p3){
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
   val_t REGB0;
@@ -11871,19 +13208,20 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
   val_t tmp;
     static val_t once_value_2; /* Once value */
     static val_t once_value_3; /* Once value */
-      static val_t once_value_4; /* Once value */
-      static val_t once_value_5; /* Once value */
-      static val_t once_value_6; /* Once value */
+        static val_t once_value_4; /* Once value */
+        static val_t once_value_5; /* Once value */
+        static val_t once_value_6; /* Once value */
         static val_t once_value_7; /* Once value */
         static val_t once_value_8; /* Once value */
               static val_t once_value_9; /* Once value */
               static val_t once_value_10; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1867;
+  fra.me.line = 2053;
   fra.me.meth = LOCATE_syntax___typing___ATypeCheckExpr___check_expr_cast;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -11894,23 +13232,23 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./syntax//typing.nit:1869 */
+  /* syntax/typing.nit:2055 */
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1870 */
+  /* syntax/typing.nit:2056 */
   REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1871 */
+  /* syntax/typing.nit:2057 */
   fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1872 */
+  /* syntax/typing.nit:2058 */
   fra.me.REG[3] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1873 */
+  /* syntax/typing.nit:2059 */
   REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -11918,7 +13256,7 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1874 */
+    /* syntax/typing.nit:2060 */
     REGB0 = TAG_Int(3);
     fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_2) {
@@ -11944,50 +13282,62 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
     fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
   } else {
-    /* ./syntax//typing.nit:1875 */
+    /* syntax/typing.nit:2061 */
     REGB0 = CALL_metamodel___static_type___MMType_____l(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1876 */
-      REGB0 = TAG_Int(5);
-      fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_4) {
-        fra.me.REG[5] = BOX_NativeString("Warning: Expression is already a ");
-        REGB0 = TAG_Int(33);
-        fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
-        once_value_4 = fra.me.REG[5];
-        register_static_object(&once_value_4);
-      } else fra.me.REG[5] = once_value_4;
-      fra.me.REG[5] = fra.me.REG[5];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      if (!once_value_5) {
-        fra.me.REG[5] = BOX_NativeString(" since it is a ");
-        REGB0 = TAG_Int(15);
-        fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
-        once_value_5 = fra.me.REG[5];
-        register_static_object(&once_value_5);
-      } else fra.me.REG[5] = once_value_5;
-      fra.me.REG[5] = fra.me.REG[5];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      if (!once_value_6) {
-        fra.me.REG[5] = BOX_NativeString(".");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
-        once_value_6 = fra.me.REG[5];
-        register_static_object(&once_value_6);
-      } else fra.me.REG[5] = once_value_6;
-      fra.me.REG[5] = fra.me.REG[5];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-      fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-      CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
+      /* syntax/typing.nit:2062 */
+      REGB0 = CALL_metamodel___type_formal___MMType___has_formal(fra.me.REG[3])(fra.me.REG[3]);
+      REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+      if (UNTAG_Bool(REGB0)) {
+        REGB0 = CALL_metamodel___type_formal___MMType___has_formal(fra.me.REG[2])(fra.me.REG[2]);
+        REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+      } else {
+        REGB1 = TAG_Bool(0);
+        REGB0 = REGB1;
+      }
+      if (UNTAG_Bool(REGB0)) {
+        /* syntax/typing.nit:2064 */
+        REGB0 = TAG_Int(5);
+        fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+        if (!once_value_4) {
+          fra.me.REG[5] = BOX_NativeString("Warning: Expression is already a ");
+          REGB0 = TAG_Int(33);
+          fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
+          once_value_4 = fra.me.REG[5];
+          register_static_object(&once_value_4);
+        } else fra.me.REG[5] = once_value_4;
+        fra.me.REG[5] = fra.me.REG[5];
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+        fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+        if (!once_value_5) {
+          fra.me.REG[5] = BOX_NativeString(" since it is a ");
+          REGB0 = TAG_Int(15);
+          fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
+          once_value_5 = fra.me.REG[5];
+          register_static_object(&once_value_5);
+        } else fra.me.REG[5] = once_value_5;
+        fra.me.REG[5] = fra.me.REG[5];
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+        fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+        if (!once_value_6) {
+          fra.me.REG[5] = BOX_NativeString(".");
+          REGB0 = TAG_Int(1);
+          fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
+          once_value_6 = fra.me.REG[5];
+          register_static_object(&once_value_6);
+        } else fra.me.REG[5] = once_value_6;
+        fra.me.REG[5] = fra.me.REG[5];
+        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+        fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+        CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
+      }
     } else {
-      /* ./syntax//typing.nit:1877 */
+      /* syntax/typing.nit:2066 */
       REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
       if (UNTAG_Bool(REGB0)) {
-        /* ./syntax//typing.nit:1879 */
+        /* syntax/typing.nit:2068 */
         REGB0 = TAG_Int(3);
         fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
         if (!once_value_7) {
@@ -12013,7 +13363,7 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
         fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
         CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
       } else {
-        /* ./syntax//typing.nit:1880 */
+        /* syntax/typing.nit:2069 */
         REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[2])(fra.me.REG[2]);
         if (UNTAG_Bool(REGB0)) {
           fra.me.REG[2] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[2])(fra.me.REG[2]);
@@ -12024,25 +13374,25 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
             REGB0 = REGB1;
           }
         } else {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         }
         if (UNTAG_Bool(REGB0)) {
-          /* ./syntax//typing.nit:1881 */
+          /* syntax/typing.nit:2070 */
           REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[3], COLOR_metamodel___type_formal___MMTypeFormal, ID_metamodel___type_formal___MMTypeFormal)) /*cast MMTypeFormal*/;
           if (UNTAG_Bool(REGB0)) {
             fra.me.REG[3] = CALL_metamodel___type_formal___MMTypeFormal___bound(fra.me.REG[3])(fra.me.REG[3]);
             REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[3])(fra.me.REG[3]);
           } else {
-            REGB1 = TAG_Bool(false);
+            REGB1 = TAG_Bool(0);
             REGB0 = REGB1;
           }
           if (UNTAG_Bool(REGB0)) {
           } else {
-            /* ./syntax//typing.nit:1887 */
+            /* syntax/typing.nit:2076 */
             REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[0], COLOR_parser___parser_nodes___AIsaExpr, ID_parser___parser_nodes___AIsaExpr)) /*cast AIsaExpr*/;
             if (UNTAG_Bool(REGB0)) {
-              /* ./syntax//typing.nit:1888 */
+              /* syntax/typing.nit:2077 */
               if (!once_value_9) {
                fra.me.REG[3] = BOX_NativeString("Warning: Prefer '!= null'.");
                REGB0 = TAG_Int(26);
@@ -12053,7 +13403,7 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
               fra.me.REG[3] = fra.me.REG[3];
               CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[3]);
             } else {
-              /* ./syntax//typing.nit:1890 */
+              /* syntax/typing.nit:2079 */
               if (!once_value_10) {
                fra.me.REG[3] = BOX_NativeString("Warning: Prefer '.as(not null)'.");
                REGB0 = TAG_Int(32);
@@ -12073,6 +13423,7 @@ void syntax___typing___ATypeCheckExpr___check_expr_cast(val_t p0, val_t p1, val_
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AIsaExpr___after_typing[] = "typing::AIsaExpr::(typing::ANode::after_typing)";
 void syntax___typing___AIsaExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -12080,10 +13431,11 @@ void syntax___typing___AIsaExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1898;
+  fra.me.line = 2087;
   fra.me.meth = LOCATE_syntax___typing___AIsaExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -12091,27 +13443,27 @@ void syntax___typing___AIsaExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1900 */
+  /* syntax/typing.nit:2089 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AIsaExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___AIsaExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___ATypeCheckExpr___check_expr_cast(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:1901 */
+  /* syntax/typing.nit:2090 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIsaExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1902 */
+  /* syntax/typing.nit:2091 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AIsaExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___typing___AExpr___its_variable(fra.me.REG[3])(fra.me.REG[3]);
-  /* ./syntax//typing.nit:1903 */
+  /* syntax/typing.nit:2092 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -12120,23 +13472,24 @@ void syntax___typing___AIsaExpr___after_typing(val_t p0, val_t p1){
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1904 */
+    /* syntax/typing.nit:2093 */
     fra.me.REG[2] = CALL_syntax___typing___TypingVisitor___flow_ctx(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[4] = CALL_parser___parser_nodes___AIsaExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[4] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[4])(fra.me.REG[4]);
     fra.me.REG[4] = CALL_syntax___flow___FlowContext___sub_with(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0], fra.me.REG[3], fra.me.REG[4]);
     ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[4];
   }
-  /* ./syntax//typing.nit:1906 */
+  /* syntax/typing.nit:2095 */
   fra.me.REG[1] = CALL_syntax___syntax_base___AbsSyntaxVisitor___type_bool(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//typing.nit:1907 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:2096 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAsCastExpr___after_typing[] = "typing::AAsCastExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAsCastExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -12144,39 +13497,40 @@ void syntax___typing___AAsCastExpr___after_typing(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1913;
+  fra.me.line = 2102;
   fra.me.meth = LOCATE_syntax___typing___AAsCastExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1915 */
+  /* syntax/typing.nit:2104 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAsCastExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_parser___parser_nodes___AAsCastExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   CALL_syntax___typing___ATypeCheckExpr___check_expr_cast(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
-  /* ./syntax//typing.nit:1916 */
+  /* syntax/typing.nit:2105 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AAsCastExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1917 */
+  /* syntax/typing.nit:2106 */
   fra.me.REG[3] = CALL_parser___parser_nodes___AAsCastExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[3] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[3])(fra.me.REG[3]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//typing.nit:1918 */
+  /* syntax/typing.nit:2107 */
   fra.me.REG[3] = ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -12189,6 +13543,7 @@ void syntax___typing___AAsCastExpr___after_typing(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AAsNotnullExpr___after_typing[] = "typing::AAsNotnullExpr::(typing::ANode::after_typing)";
 void syntax___typing___AAsNotnullExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -12197,10 +13552,11 @@ void syntax___typing___AAsNotnullExpr___after_typing(val_t p0, val_t p1){
       static val_t once_value_3; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1923;
+  fra.me.line = 2112;
   fra.me.meth = LOCATE_syntax___typing___AAsNotnullExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -12208,20 +13564,20 @@ void syntax___typing___AAsNotnullExpr___after_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1925 */
+  /* syntax/typing.nit:2114 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAsNotnullExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1926 */
+  /* syntax/typing.nit:2115 */
   fra.me.REG[2] = CALL_parser___parser_nodes___AAsNotnullExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
-  /* ./syntax//typing.nit:1927 */
+  /* syntax/typing.nit:2116 */
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//typing.nit:1928 */
+    /* syntax/typing.nit:2117 */
     fra.me.REG[3] = CALL_parser___parser_nodes___AAsNotnullExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
     if (!once_value_2) {
       fra.me.REG[4] = BOX_NativeString("Type error: 'as(not null)' on 'null' value.");
@@ -12232,14 +13588,14 @@ void syntax___typing___AAsNotnullExpr___after_typing(val_t p0, val_t p1){
     } else fra.me.REG[4] = once_value_2;
     fra.me.REG[4] = fra.me.REG[4];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___error(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3], fra.me.REG[4]);
-    /* ./syntax//typing.nit:1929 */
+    /* syntax/typing.nit:2118 */
     goto label1;
   } else {
-    /* ./syntax//typing.nit:1930 */
+    /* syntax/typing.nit:2119 */
     REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[2])(fra.me.REG[2]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//typing.nit:1931 */
+      /* syntax/typing.nit:2120 */
       fra.me.REG[2] = CALL_parser___parser_nodes___AAsNotnullExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
       if (!once_value_3) {
         fra.me.REG[4] = BOX_NativeString("Warning: 'as(not null)' on non nullable type.");
@@ -12252,56 +13608,110 @@ void syntax___typing___AAsNotnullExpr___after_typing(val_t p0, val_t p1){
       CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2], fra.me.REG[4]);
     }
   }
-  /* ./syntax//typing.nit:1933 */
+  /* syntax/typing.nit:2122 */
   fra.me.REG[4] = CALL_parser___parser_nodes___AAsNotnullExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[4] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[4])(fra.me.REG[4]);
   fra.me.REG[4] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[4])(fra.me.REG[4]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[4];
-  /* ./syntax//typing.nit:1934 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:2123 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AProxyExpr___after_typing[] = "typing::AProxyExpr::(typing::ANode::after_typing)";
 void syntax___typing___AProxyExpr___after_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1939;
+  fra.me.line = 2128;
   fra.me.meth = LOCATE_syntax___typing___AProxyExpr___after_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1941 */
+  /* syntax/typing.nit:2130 */
   fra.me.REG[1] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AExpr___is_typed(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1942 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/typing.nit:2131 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___typing___AExpr____is_typed(fra.me.REG[0]) = REGB0;
-  /* ./syntax//typing.nit:1943 */
+  /* syntax/typing.nit:2132 */
   fra.me.REG[1] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_syntax___syntax_base___AExpr___is_statement(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
     goto label1;
   }
-  /* ./syntax//typing.nit:1944 */
+  /* syntax/typing.nit:2133 */
   fra.me.REG[1] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[1] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_syntax___typing___AExpr____stype(fra.me.REG[0]) = fra.me.REG[1];
+  /* syntax/typing.nit:2134 */
+  fra.me.REG[1] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[1] = ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[1]);
+  ATTR_syntax___typing___AExpr____if_true_flow_ctx(fra.me.REG[0]) = fra.me.REG[1];
+  /* syntax/typing.nit:2135 */
+  fra.me.REG[1] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[1] = ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[1]);
+  ATTR_syntax___typing___AExpr____if_false_flow_ctx(fra.me.REG[0]) = fra.me.REG[1];
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___AProxyExpr___is_self[] = "typing::AProxyExpr::(typing::AExpr::is_self)";
+val_t syntax___typing___AProxyExpr___is_self(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 2138;
+  fra.me.meth = LOCATE_syntax___typing___AProxyExpr___is_self;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:2138 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_syntax___typing___AExpr___is_self(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_syntax___typing___AProxyExpr___its_variable[] = "typing::AProxyExpr::(typing::AExpr::its_variable)";
+val_t syntax___typing___AProxyExpr___its_variable(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 2140;
+  fra.me.meth = LOCATE_syntax___typing___AProxyExpr___its_variable;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  /* syntax/typing.nit:2140 */
+  fra.me.REG[0] = CALL_parser___parser_nodes___AProxyExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_syntax___typing___AExpr___its_variable(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_syntax___typing___AOnceExpr___accept_typing[] = "typing::AOnceExpr::(typing::ANode::accept_typing)";
 void syntax___typing___AOnceExpr___accept_typing(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -12311,10 +13721,11 @@ void syntax___typing___AOnceExpr___accept_typing(val_t p0, val_t p1){
     static val_t once_value_1; /* Once value */
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_syntax___typing;
-  fra.me.line = 1949;
+  fra.me.line = 2144;
   fra.me.meth = LOCATE_syntax___typing___AOnceExpr___accept_typing;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -12322,10 +13733,10 @@ void syntax___typing___AOnceExpr___accept_typing(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//typing.nit:1949 */
+  /* syntax/typing.nit:2144 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./syntax//typing.nit:1951 */
+  /* syntax/typing.nit:2146 */
   REGB0 = CALL_syntax___typing___TypingVisitor___once_count(fra.me.REG[3])(fra.me.REG[3]);
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -12333,11 +13744,11 @@ void syntax___typing___AOnceExpr___accept_typing(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:217 */
+  /* ../lib/standard/kernel.nit:237 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
-  /* ./syntax//typing.nit:1951 */
+  /* syntax/typing.nit:2146 */
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//typing.nit:1952 */
+    /* syntax/typing.nit:2147 */
     if (!once_value_1) {
       fra.me.REG[4] = BOX_NativeString("Useless once in a once expression.");
       REGB1 = TAG_Int(34);
@@ -12348,22 +13759,116 @@ void syntax___typing___AOnceExpr___accept_typing(val_t p0, val_t p1){
     fra.me.REG[4] = fra.me.REG[4];
     CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2], fra.me.REG[4]);
   }
-  /* ./syntax//typing.nit:1954 */
+  /* syntax/typing.nit:2149 */
   REGB1 = CALL_syntax___typing___TypingVisitor___once_count(fra.me.REG[3])(fra.me.REG[3]);
   REGB0 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:218 */
+  /* ../lib/standard/kernel.nit:238 */
   REGB0 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB0));
-  /* ./syntax//typing.nit:1954 */
+  /* syntax/typing.nit:2149 */
   CALL_syntax___typing___TypingVisitor___once_count__eq(fra.me.REG[3])(fra.me.REG[3], REGB0);
-  /* ./syntax//typing.nit:1956 */
+  /* syntax/typing.nit:2151 */
   CALL_SUPER_syntax___typing___AOnceExpr___accept_typing(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//typing.nit:1958 */
+  /* syntax/typing.nit:2153 */
   REGB0 = CALL_syntax___typing___TypingVisitor___once_count(fra.me.REG[3])(fra.me.REG[3]);
   REGB1 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:220 */
+  /* ../lib/standard/kernel.nit:240 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ./syntax//typing.nit:1958 */
+  /* syntax/typing.nit:2153 */
   CALL_syntax___typing___TypingVisitor___once_count__eq(fra.me.REG[3])(fra.me.REG[3], REGB1);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___typing___ADebugTypeExpr___after_typing[] = "typing::ADebugTypeExpr::(typing::ANode::after_typing)";
+void syntax___typing___ADebugTypeExpr___after_typing(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+    static val_t once_value_2; /* Once value */
+    static val_t once_value_3; /* Once value */
+    static val_t once_value_4; /* Once value */
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_syntax___typing;
+  fra.me.line = 2158;
+  fra.me.meth = LOCATE_syntax___typing___ADebugTypeExpr___after_typing;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
+  fra.me.REG[3] = NIT_NULL;
+  fra.me.REG[4] = NIT_NULL;
+  fra.me.REG[5] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* syntax/typing.nit:2160 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___ADebugTypeExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_syntax___syntax_base___AbsSyntaxVisitor___check_expr(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    goto label1;
+  }
+  /* syntax/typing.nit:2161 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___ADebugTypeExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_syntax___syntax_base___AType___is_typed(fra.me.REG[2])(fra.me.REG[2]);
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    goto label1;
+  }
+  /* syntax/typing.nit:2162 */
+  fra.me.REG[2] = CALL_parser___parser_nodes___ADebugTypeExpr___n_expr(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[2] = CALL_syntax___syntax_base___AExpr___stype(fra.me.REG[2])(fra.me.REG[2]);
+  /* syntax/typing.nit:2163 */
+  fra.me.REG[3] = CALL_parser___parser_nodes___ADebugTypeExpr___n_type(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[3] = CALL_syntax___syntax_base___AType___stype(fra.me.REG[3])(fra.me.REG[3]);
+  /* syntax/typing.nit:2164 */
+  REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
+    REGB0 = REGB1;
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  if (UNTAG_Bool(REGB0)) {
+    /* syntax/typing.nit:2165 */
+    REGB0 = TAG_Int(5);
+    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
+    if (!once_value_2) {
+      fra.me.REG[5] = BOX_NativeString("Warning: Expression is a ");
+      REGB0 = TAG_Int(25);
+      fra.me.REG[5] = NEW_String_standard___string___String___with_native(fra.me.REG[5], REGB0);
+      once_value_2 = fra.me.REG[5];
+      register_static_object(&once_value_2);
+    } else fra.me.REG[5] = once_value_2;
+    fra.me.REG[5] = fra.me.REG[5];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
+    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
+    if (!once_value_3) {
+      fra.me.REG[2] = BOX_NativeString(", expected ");
+      REGB0 = TAG_Int(11);
+      fra.me.REG[2] = NEW_String_standard___string___String___with_native(fra.me.REG[2], REGB0);
+      once_value_3 = fra.me.REG[2];
+      register_static_object(&once_value_3);
+    } else fra.me.REG[2] = once_value_3;
+    fra.me.REG[2] = fra.me.REG[2];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
+    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
+    if (!once_value_4) {
+      fra.me.REG[3] = BOX_NativeString(".");
+      REGB0 = TAG_Int(1);
+      fra.me.REG[3] = NEW_String_standard___string___String___with_native(fra.me.REG[3], REGB0);
+      once_value_4 = fra.me.REG[3];
+      register_static_object(&once_value_4);
+    } else fra.me.REG[3] = once_value_4;
+    fra.me.REG[3] = fra.me.REG[3];
+    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
+    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
+    CALL_syntax___syntax_base___AbsSyntaxVisitor___warning(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[4]);
+  }
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return;
+}