c_src: regenerate with soft nullable handling
[nit.git] / c_src / abstract_collection._sep.c
index 4ee19e0..9b1ec0b 100644 (file)
+/* This C file is generated by NIT to compile module abstract_collection. */
 #include "abstract_collection._sep.h"
 val_t abstract_collection___Collection___iterator(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::iterator (bin/../lib/standard//abstract_collection.nit:42,2--43:26)"};
+  struct trace_t trace = {NULL, NULL, 42, LOCATE_abstract_collection___Collection___iterator};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method iterator called (bin/../lib/standard//abstract_collection.nit:42,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 42);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___is_empty(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::is_empty (bin/../lib/standard//abstract_collection.nit:45,2--46:20)"};
+  struct trace_t trace = {NULL, NULL, 45, LOCATE_abstract_collection___Collection___is_empty};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method is_empty called (bin/../lib/standard//abstract_collection.nit:45,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 45);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___length(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::length (bin/../lib/standard//abstract_collection.nit:48,2--49:17)"};
+  struct trace_t trace = {NULL, NULL, 48, LOCATE_abstract_collection___Collection___length};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method length called (bin/../lib/standard//abstract_collection.nit:48,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 48);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___has(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::has (bin/../lib/standard//abstract_collection.nit:51,2--53:24)"};
+  struct trace_t trace = {NULL, NULL, 51, LOCATE_abstract_collection___Collection___has};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method has called (bin/../lib/standard//abstract_collection.nit:51,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 51);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___has_only(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::has_only (bin/../lib/standard//abstract_collection.nit:55,2--58:29)"};
+  struct trace_t trace = {NULL, NULL, 55, LOCATE_abstract_collection___Collection___has_only};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method has_only called (bin/../lib/standard//abstract_collection.nit:55,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 55);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___count(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::count (bin/../lib/standard//abstract_collection.nit:60,2--62:25)"};
+  struct trace_t trace = {NULL, NULL, 60, LOCATE_abstract_collection___Collection___count};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method count called (bin/../lib/standard//abstract_collection.nit:60,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 60);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___Collection___first(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Collection::first (bin/../lib/standard//abstract_collection.nit:64,2--65:14)"};
+  struct trace_t trace = {NULL, NULL, 64, LOCATE_abstract_collection___Collection___first};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method first called (bin/../lib/standard//abstract_collection.nit:64,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 64);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___NaiveCollection___is_empty(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::is_empty (bin/../lib/standard//abstract_collection.nit:72,2--42)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((abstract_collection___NaiveCollection___length_t)CALL( self,COLOR_abstract_collection___Collection___length))( self) /*NaiveCollection::length*/;
-  variable0 = TAG_Bool((variable0)==( TAG_Int(0)));
+  struct trace_t trace = {NULL, NULL, 72, LOCATE_abstract_collection___NaiveCollection___is_empty};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___length(variable[0])(variable[0]) /*NaiveCollection::length*/;
+  /* Register variable[2]: Result */
+  variable[2] = TAG_Bool((variable[2])==( TAG_Int(0)));
+  variable[1] = variable[2];
   goto return_label0;
   return_label0: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___NaiveCollection___length(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::length (bin/../lib/standard//abstract_collection.nit:74,2--78:11)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Int(0);
-  variable1 = ((abstract_collection___Collection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*NaiveCollection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 74, LOCATE_abstract_collection___NaiveCollection___length};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Local variable */
+  variable[2] =  TAG_Int(0);
+  /* Register variable[3]: For iterator */
+  variable[3] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*Collection::iterator*/;
   while (true) { /*for*/
-    variable2 = ((abstract_collection___Iterator___is_ok_t)CALL(variable1,COLOR_abstract_collection___Iterator___is_ok))(variable1) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable2)) break; /*for*/
-    variable2 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-    variable0 = TAG_Int(UNTAG_Int(variable0)+UNTAG_Int( variable0 /*nb*/)) /*nb*/;
+    /* Register variable[4]: For 'is_ok' result */
+    variable[4] = CALL_abstract_collection___Iterator___is_ok(variable[3])(variable[3]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[4])) break; /*for*/
+    variable[4] = CALL_abstract_collection___Iterator___item(variable[3])(variable[3]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[5]: Local variable */
+    variable[5] = variable[4];
+    variable[2] = TAG_Int(UNTAG_Int(variable[2])+UNTAG_Int( variable[2] /*nb*/)) /*nb*/;
     continue_2: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable1,COLOR_abstract_collection___Iterator___next))(variable1) /*Iterator::next*/;
+    CALL_abstract_collection___Iterator___next(variable[3])(variable[3]) /*Iterator::next*/;
   }
   break_2: while(0);
-  variable0 =  variable0 /*nb*/;
+  variable[1] =  variable[2] /*nb*/;
   goto return_label1;
   return_label1: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___NaiveCollection___has(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::has (bin/../lib/standard//abstract_collection.nit:81,2--84:14)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((abstract_collection___Collection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*NaiveCollection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 81, LOCATE_abstract_collection___NaiveCollection___has};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: For iterator */
+  variable[3] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*Collection::iterator*/;
   while (true) { /*for*/
-    variable2 = ((abstract_collection___Iterator___is_ok_t)CALL(variable1,COLOR_abstract_collection___Iterator___is_ok))(variable1) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable2)) break; /*for*/
-    variable2 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-    variable3 = TAG_Bool(( variable2 /*i*/ ==  variable0 /*item*/) || (( variable2 /*i*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*i*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*i*/, variable0 /*item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*i*/,COLOR_kernel___Object_____eqeq))( variable2 /*i*/,  variable0 /*item*/) /*Object::==*/)))));
-    if (UNTAG_Bool(variable3)) { /*if*/
-      variable1 =  TAG_Bool(true);
+    /* Register variable[4]: For 'is_ok' result */
+    variable[4] = CALL_abstract_collection___Iterator___is_ok(variable[3])(variable[3]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[4])) break; /*for*/
+    variable[4] = CALL_abstract_collection___Iterator___item(variable[3])(variable[3]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[5]: Local variable */
+    variable[5] = variable[4];
+    /* Register variable[6]: Result */
+    variable[6] = TAG_Bool(( variable[5] /*i*/ ==  variable[1] /*item*/) || (( variable[5] /*i*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*i*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*i*/, variable[1] /*item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*i*/)( variable[5] /*i*/,  variable[1] /*item*/) /*Object::==*/)))));
+    if (UNTAG_Bool(variable[6])) { /*if*/
+      variable[2] =  TAG_Bool(true);
       goto return_label3;
     }
     continue_4: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable1,COLOR_abstract_collection___Iterator___next))(variable1) /*Iterator::next*/;
+    CALL_abstract_collection___Iterator___next(variable[3])(variable[3]) /*Iterator::next*/;
   }
   break_4: while(0);
-  variable1 =  TAG_Bool(false);
+  variable[2] =  TAG_Bool(false);
   goto return_label3;
   return_label3: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___NaiveCollection___has_only(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::has_only (bin/../lib/standard//abstract_collection.nit:87,2--90:13)"};
-  val_t variable0;
-  val_t variable1;
-    val_t variable2;
-    val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((abstract_collection___Collection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*NaiveCollection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 87, LOCATE_abstract_collection___NaiveCollection___has_only};
+  val_t variable[7];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: For iterator */
+  variable[3] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*Collection::iterator*/;
   while (true) { /*for*/
-    variable2 = ((abstract_collection___Iterator___is_ok_t)CALL(variable1,COLOR_abstract_collection___Iterator___is_ok))(variable1) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable2)) break; /*for*/
-    variable2 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-    variable3 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable2 /*i*/ ==  variable0 /*item*/) || (( variable2 /*i*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable2 /*i*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable2 /*i*/, variable0 /*item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable2 /*i*/,COLOR_kernel___Object_____eqeq))( variable2 /*i*/,  variable0 /*item*/) /*Object::==*/)))))));
-    if (UNTAG_Bool(variable3)) { /*if*/
-      variable1 =  TAG_Bool(false);
+    /* Register variable[4]: For 'is_ok' result */
+    variable[4] = CALL_abstract_collection___Iterator___is_ok(variable[3])(variable[3]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[4])) break; /*for*/
+    variable[4] = CALL_abstract_collection___Iterator___item(variable[3])(variable[3]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[5]: Local variable */
+    variable[5] = variable[4];
+    /* Register variable[6]: Result */
+    variable[6] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[5] /*i*/ ==  variable[1] /*item*/) || (( variable[5] /*i*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[5] /*i*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[5] /*i*/, variable[1] /*item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[5] /*i*/)( variable[5] /*i*/,  variable[1] /*item*/) /*Object::==*/)))))));
+    if (UNTAG_Bool(variable[6])) { /*if*/
+      variable[2] =  TAG_Bool(false);
       goto return_label5;
     }
     continue_6: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable1,COLOR_abstract_collection___Iterator___next))(variable1) /*Iterator::next*/;
+    CALL_abstract_collection___Iterator___next(variable[3])(variable[3]) /*Iterator::next*/;
   }
   break_6: while(0);
-  variable1 =  TAG_Bool(true);
+  variable[2] =  TAG_Bool(true);
   goto return_label5;
   return_label5: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___NaiveCollection___count(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::count (bin/../lib/standard//abstract_collection.nit:93,2--97:11)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-    val_t variable3;
-    val_t variable4;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  TAG_Int(0);
-  variable2 = ((abstract_collection___Collection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*NaiveCollection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 93, LOCATE_abstract_collection___NaiveCollection___count};
+  val_t variable[8];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  variable[3] =  TAG_Int(0);
+  /* Register variable[4]: For iterator */
+  variable[4] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*Collection::iterator*/;
   while (true) { /*for*/
-    variable3 = ((abstract_collection___Iterator___is_ok_t)CALL(variable2,COLOR_abstract_collection___Iterator___is_ok))(variable2) /*Iterator::is_ok*/;
-    if (!UNTAG_Bool(variable3)) break; /*for*/
-    variable3 = ((abstract_collection___Iterator___item_t)CALL(variable2,COLOR_abstract_collection___Iterator___item))(variable2) /*Iterator::item*/;
-    variable4 = TAG_Bool(( variable3 /*i*/ ==  variable0 /*item*/) || (( variable3 /*i*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable3 /*i*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable3 /*i*/, variable0 /*item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable3 /*i*/,COLOR_kernel___Object_____eqeq))( variable3 /*i*/,  variable0 /*item*/) /*Object::==*/)))));
-    if (UNTAG_Bool(variable4)) { /*if*/
-      variable1 = TAG_Int(UNTAG_Int(variable1)+UNTAG_Int( TAG_Int(1))) /*nb*/;
+    /* Register variable[5]: For 'is_ok' result */
+    variable[5] = CALL_abstract_collection___Iterator___is_ok(variable[4])(variable[4]) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[5])) break; /*for*/
+    variable[5] = CALL_abstract_collection___Iterator___item(variable[4])(variable[4]) /*Iterator::item*/ /* Ensure var: For item*/;
+    /* Register variable[6]: Local variable */
+    variable[6] = variable[5];
+    /* Register variable[7]: Result */
+    variable[7] = TAG_Bool(( variable[6] /*i*/ ==  variable[1] /*item*/) || (( variable[6] /*i*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[6] /*i*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[6] /*i*/, variable[1] /*item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[6] /*i*/)( variable[6] /*i*/,  variable[1] /*item*/) /*Object::==*/)))));
+    if (UNTAG_Bool(variable[7])) { /*if*/
+      variable[3] = TAG_Int(UNTAG_Int(variable[3])+UNTAG_Int( TAG_Int(1))) /*nb*/;
     }
     continue_8: while(0);
-    ((abstract_collection___Iterator___next_t)CALL(variable2,COLOR_abstract_collection___Iterator___next))(variable2) /*Iterator::next*/;
+    CALL_abstract_collection___Iterator___next(variable[4])(variable[4]) /*Iterator::next*/;
   }
   break_8: while(0);
-  variable1 =  variable1 /*nb*/;
+  variable[2] =  variable[3] /*nb*/;
   goto return_label7;
   return_label7: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___NaiveCollection___first(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::NaiveCollection::first (bin/../lib/standard//abstract_collection.nit:100,2--103:22)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((abstract_collection___NaiveCollection___length_t)CALL( self,COLOR_abstract_collection___Collection___length))( self) /*NaiveCollection::length*/;
-  variable0 = TAG_Bool(UNTAG_Int(variable0)>UNTAG_Int( TAG_Int(0)));
-  if (!UNTAG_Bool(variable0)) { fprintf(stderr, "Assert failed: bin/../lib/standard//abstract_collection.nit:102,3--19\n"); nit_exit(1);}
-  variable0 = ((abstract_collection___Collection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*NaiveCollection::iterator*/;
-  variable0 = ((abstract_collection___Iterator___item_t)CALL(variable0,COLOR_abstract_collection___Iterator___item))(variable0) /*Iterator::item*/;
+  struct trace_t trace = {NULL, NULL, 100, LOCATE_abstract_collection___NaiveCollection___first};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___length(variable[0])(variable[0]) /*NaiveCollection::length*/;
+  /* Register variable[2]: Result */
+  variable[2] = TAG_Bool(UNTAG_Int(variable[2])>UNTAG_Int( TAG_Int(0)));
+  if (!UNTAG_Bool(variable[2])) { fprintf(stderr, "Assert%s failed", ""); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_abstract_collection___NaiveCollection___first, LOCATE_abstract_collection, 102); nit_exit(1);}
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*Collection::iterator*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Iterator___item(variable[2])(variable[2]) /*Iterator::item*/;
+  variable[1] = variable[2];
   goto return_label9;
   return_label9: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___Iterator___item(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Iterator::item (bin/../lib/standard//abstract_collection.nit:110,2--112:13)"};
+  struct trace_t trace = {NULL, NULL, 110, LOCATE_abstract_collection___Iterator___item};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method item called (bin/../lib/standard//abstract_collection.nit:110,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 110);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 void abstract_collection___Iterator___next(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Iterator::next (bin/../lib/standard//abstract_collection.nit:114,2--116:10)"};
+  struct trace_t trace = {NULL, NULL, 114, LOCATE_abstract_collection___Iterator___next};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method next called (bin/../lib/standard//abstract_collection.nit:114,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 114);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___Iterator___is_ok(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Iterator::is_ok (bin/../lib/standard//abstract_collection.nit:118,2--119:17)"};
+  struct trace_t trace = {NULL, NULL, 118, LOCATE_abstract_collection___Iterator___is_ok};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method is_ok called (bin/../lib/standard//abstract_collection.nit:118,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 118);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
-val_t abstract_collection___Container___first(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::first (bin/../lib/standard//abstract_collection.nit:126,2--33)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___Container____item( self) /*Container::_item*/;
+val_t abstract_collection___Container___iterator(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 145, LOCATE_abstract_collection___Container___iterator};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = NEW_ContainerIterator_abstract_collection___ContainerIterator___init(variable[0]) /*new ContainerIterator[E]*/;
+  variable[1] = variable[2];
   goto return_label10;
   return_label10: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___Container___is_empty(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::is_empty (bin/../lib/standard//abstract_collection.nit:128,2--36)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Bool(false);
+  struct trace_t trace = {NULL, NULL, 128, LOCATE_abstract_collection___Container___is_empty};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Bool(false);
   goto return_label11;
   return_label11: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___Container___length(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::length (bin/../lib/standard//abstract_collection.nit:130,2--30)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  TAG_Int(1);
+  struct trace_t trace = {NULL, NULL, 130, LOCATE_abstract_collection___Container___length};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  variable[1] =  TAG_Int(1);
   goto return_label12;
   return_label12: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 val_t abstract_collection___Container___has(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::has (bin/../lib/standard//abstract_collection.nit:132,2--51)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_abstract_collection___Container____item( self) /*Container::_item*/;
-  variable1 = TAG_Bool((variable1 ==  variable0 /*an_item*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, variable0 /*an_item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  variable0 /*an_item*/) /*Object::==*/)))));
+  struct trace_t trace = {NULL, NULL, 132, LOCATE_abstract_collection___Container___has};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_abstract_collection___Container____item(variable[0]) /*Container::_item*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  variable[1] /*an_item*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], variable[1] /*an_item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  variable[1] /*an_item*/) /*Object::==*/)))));
+  variable[2] = variable[3];
   goto return_label13;
   return_label13: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___Container___has_only(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::has_only (bin/../lib/standard//abstract_collection.nit:134,2--56)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_abstract_collection___Container____item( self) /*Container::_item*/;
-  variable1 = TAG_Bool((variable1 ==  variable0 /*an_item*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, variable0 /*an_item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  variable0 /*an_item*/) /*Object::==*/)))));
+  struct trace_t trace = {NULL, NULL, 134, LOCATE_abstract_collection___Container___has_only};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_abstract_collection___Container____item(variable[0]) /*Container::_item*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  variable[1] /*an_item*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], variable[1] /*an_item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  variable[1] /*an_item*/) /*Object::==*/)))));
+  variable[2] = variable[3];
   goto return_label14;
   return_label14: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___Container___count(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::count (bin/../lib/standard//abstract_collection.nit:136,2--141:11)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_abstract_collection___Container____item( self) /*Container::_item*/;
-  variable1 = TAG_Bool((variable1 ==  variable0 /*an_item*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, variable0 /*an_item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  variable0 /*an_item*/) /*Object::==*/)))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 =  TAG_Int(1);
+  struct trace_t trace = {NULL, NULL, 136, LOCATE_abstract_collection___Container___count};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = ATTR_abstract_collection___Container____item(variable[0]) /*Container::_item*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool((variable[3] ==  variable[1] /*an_item*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], variable[1] /*an_item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  variable[1] /*an_item*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    variable[2] =  TAG_Int(1);
     goto return_label15;
   } else { /*if*/
-    variable1 =  TAG_Int(0);
+    variable[2] =  TAG_Int(0);
     goto return_label15;
   }
   return_label15: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
-val_t abstract_collection___Container___iterator(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::iterator (bin/../lib/standard//abstract_collection.nit:145,2--60)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = NEW_abstract_collection___ContainerIterator___init( self); /*new ContainerIterator[E]*/
+val_t abstract_collection___Container___first(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 126, LOCATE_abstract_collection___Container___first};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___Container____item(variable[0]) /*Container::_item*/;
+  variable[1] = variable[2];
   goto return_label16;
   return_label16: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 void abstract_collection___Container___init(val_t  self, val_t  param0, int* init_table) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::init (bin/../lib/standard//abstract_collection.nit:147,2--148:24)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_Container].i]) return;
-  ATTR_abstract_collection___Container____item( self) /*Container::_item*/ =  variable0 /*e*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_Container].i] = 1;
+  struct trace_t trace = {NULL, NULL, 147, LOCATE_abstract_collection___Container___init};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  if (init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_Container].i]) return;
+  /* Register variable[2]: Method return value and escape marker */
+  ATTR_abstract_collection___Container____item(variable[0]) /*Container::_item*/ =  variable[1] /*e*/;
+  return_label17: while(false);
+  init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_Container].i] = 1;
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___Container___item(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::item (bin/../lib/standard//abstract_collection.nit:150,2--151:32)"};
+  struct trace_t trace = {NULL, NULL, 150, LOCATE_abstract_collection___Container___item};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   tracehead = trace.prev;
   return ATTR_abstract_collection___Container____item( self) /*Container::_item*/;
 }
 void abstract_collection___Container___item__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Container::item= (bin/../lib/standard//abstract_collection.nit:150,2--151:32)"};
+  struct trace_t trace = {NULL, NULL, 150, LOCATE_abstract_collection___Container___item__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   ATTR_abstract_collection___Container____item( self) /*Container::_item*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___ContainerIterator___item(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::ContainerIterator::item (bin/../lib/standard//abstract_collection.nit:157,2--42)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___ContainerIterator____container( self) /*ContainerIterator::_container*/;
-  variable0 = ((abstract_collection___Container___item_t)CALL(variable0,COLOR_abstract_collection___Container___item))(variable0) /*Container::item*/;
+  struct trace_t trace = {NULL, NULL, 157, LOCATE_abstract_collection___ContainerIterator___item};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___ContainerIterator____container(variable[0]) /*ContainerIterator::_container*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Container___item(variable[2])(variable[2]) /*Container::item*/;
+  variable[1] = variable[2];
   goto return_label18;
   return_label18: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
 void abstract_collection___ContainerIterator___next(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::ContainerIterator::next (bin/../lib/standard//abstract_collection.nit:159,2--34)"};
+  struct trace_t trace = {NULL, NULL, 159, LOCATE_abstract_collection___ContainerIterator___next};
+  val_t variable[2];
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  ATTR_abstract_collection___ContainerIterator____is_ok( self) /*ContainerIterator::_is_ok*/ =  TAG_Bool(false);
-  tracehead = trace.prev;
-  return;
-}
-void abstract_collection___ContainerIterator___init(val_t  self, val_t  param0, int* init_table) {
-  struct trace_t trace = {NULL, "abstract_collection::ContainerIterator::init (bin/../lib/standard//abstract_collection.nit:161,2--40)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_ContainerIterator].i]) return;
-  ATTR_abstract_collection___ContainerIterator____container( self) /*ContainerIterator::_container*/ =  variable0 /*c*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_ContainerIterator].i] = 1;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  ATTR_abstract_collection___ContainerIterator____is_ok(variable[0]) /*ContainerIterator::_is_ok*/ =  TAG_Bool(false);
+  return_label19: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___ContainerIterator___is_ok(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::ContainerIterator::is_ok (bin/../lib/standard//abstract_collection.nit:163,2--40)"};
+  struct trace_t trace = {NULL, NULL, 163, LOCATE_abstract_collection___ContainerIterator___is_ok};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   tracehead = trace.prev;
   return ATTR_abstract_collection___ContainerIterator____is_ok( self) /*ContainerIterator::_is_ok*/;
 }
+void abstract_collection___ContainerIterator___init(val_t  self, val_t  param0, int* init_table) {
+  struct trace_t trace = {NULL, NULL, 161, LOCATE_abstract_collection___ContainerIterator___init};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  if (init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_ContainerIterator].i]) return;
+  /* Register variable[2]: Method return value and escape marker */
+  ATTR_abstract_collection___ContainerIterator____container(variable[0]) /*ContainerIterator::_container*/ =  variable[1] /*c*/;
+  return_label20: while(false);
+  init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_ContainerIterator].i] = 1;
+  tracehead = trace.prev;
+  return;
+}
 void abstract_collection___RemovableCollection___clear(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::RemovableCollection::clear (bin/../lib/standard//abstract_collection.nit:171,2--172:11)"};
+  struct trace_t trace = {NULL, NULL, 171, LOCATE_abstract_collection___RemovableCollection___clear};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method clear called (bin/../lib/standard//abstract_collection.nit:171,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 171);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___RemovableCollection___remove(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::RemovableCollection::remove (bin/../lib/standard//abstract_collection.nit:174,2--175:20)"};
+  struct trace_t trace = {NULL, NULL, 174, LOCATE_abstract_collection___RemovableCollection___remove};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method remove called (bin/../lib/standard//abstract_collection.nit:174,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 174);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___RemovableCollection___remove_all(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::RemovableCollection::remove_all (bin/../lib/standard//abstract_collection.nit:177,2--178:59)"};
-  val_t variable0;
-    val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
+  struct trace_t trace = {NULL, NULL, 177, LOCATE_abstract_collection___RemovableCollection___remove_all};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
   while (true) { /*while*/
-    variable1 = ((abstract_collection___Collection___has_t)CALL( self,COLOR_abstract_collection___Collection___has))( self,  variable0 /*item*/) /*RemovableCollection::has*/;
-    if (!UNTAG_Bool(variable1)) break; /* while*/
-    ((abstract_collection___RemovableCollection___remove_t)CALL( self,COLOR_abstract_collection___RemovableCollection___remove))( self,  variable0 /*item*/) /*RemovableCollection::remove*/;
+    /* Register variable[3]: Result */
+    variable[3] = CALL_abstract_collection___Collection___has(variable[0])(variable[0],  variable[1] /*item*/) /*Collection::has*/;
+    if (!UNTAG_Bool(variable[3])) break; /* while*/
+    CALL_abstract_collection___RemovableCollection___remove(variable[0])(variable[0],  variable[1] /*item*/) /*RemovableCollection::remove*/;
     continue_22: while(0);
   }
   break_22: while(0);
+  return_label21: while(false);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___SimpleCollection___add(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::SimpleCollection::add (bin/../lib/standard//abstract_collection.nit:184,2--186:17)"};
+  struct trace_t trace = {NULL, NULL, 184, LOCATE_abstract_collection___SimpleCollection___add};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method add called (bin/../lib/standard//abstract_collection.nit:184,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 184);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___SimpleCollection___add_all(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::SimpleCollection::add_all (bin/../lib/standard//abstract_collection.nit:188,2--189:81)"};
-  val_t variable0;
-  val_t variable1;
-      val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable0 /*coll*/ ==  NIT_NULL /*null*/) || (( variable0 /*coll*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable0 /*coll*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable0 /*coll*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable0 /*coll*/,COLOR_kernel___Object_____eqeq))( variable0 /*coll*/,  NIT_NULL /*null*/) /*Collection::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((abstract_collection___Collection___iterator_t)CALL( variable0 /*coll*/,COLOR_abstract_collection___Collection___iterator))( variable0 /*coll*/) /*Collection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 188, LOCATE_abstract_collection___SimpleCollection___add_all};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[1] /*coll*/ ==  NIT_NULL /*null*/) || (( variable[1] /*coll*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[1] /*coll*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[1] /*coll*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[1] /*coll*/)( variable[1] /*coll*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: For iterator */
+    variable[3] = CALL_abstract_collection___Collection___iterator( variable[1] /*coll*/)( variable[1] /*coll*/) /*Collection::iterator*/;
     while (true) { /*for*/
-      variable2 = ((abstract_collection___Iterator___is_ok_t)CALL(variable1,COLOR_abstract_collection___Iterator___is_ok))(variable1) /*Iterator::is_ok*/;
-      if (!UNTAG_Bool(variable2)) break; /*for*/
-      variable2 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-      ((abstract_collection___SimpleCollection___add_t)CALL( self,COLOR_abstract_collection___SimpleCollection___add))( self,  variable2 /*i*/) /*SimpleCollection::add*/;
+      /* Register variable[4]: For 'is_ok' result */
+      variable[4] = CALL_abstract_collection___Iterator___is_ok(variable[3])(variable[3]) /*Iterator::is_ok*/;
+      if (!UNTAG_Bool(variable[4])) break; /*for*/
+      variable[4] = CALL_abstract_collection___Iterator___item(variable[3])(variable[3]) /*Iterator::item*/ /* Ensure var: For item*/;
+      /* Register variable[5]: Local variable */
+      variable[5] = variable[4];
+      CALL_abstract_collection___SimpleCollection___add(variable[0])(variable[0],  variable[5] /*i*/) /*SimpleCollection::add*/;
       continue_24: while(0);
-      ((abstract_collection___Iterator___next_t)CALL(variable1,COLOR_abstract_collection___Iterator___next))(variable1) /*Iterator::next*/;
+      CALL_abstract_collection___Iterator___next(variable[3])(variable[3]) /*Iterator::next*/;
     }
     break_24: while(0);
   }
+  return_label23: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___Set___has_only(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Set::has_only (bin/../lib/standard//abstract_collection.nit:204,2--212:15)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((abstract_collection___Collection___length_t)CALL( self,COLOR_abstract_collection___Collection___length))( self) /*Set::length*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(( variable1 /*l*/)==( TAG_Int(1)));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = ((abstract_collection___Collection___has_t)CALL( self,COLOR_abstract_collection___Collection___has))( self,  variable0 /*item*/) /*Set::has*/;
-    variable1 = variable2;
+  struct trace_t trace = {NULL, NULL, 204, LOCATE_abstract_collection___Set___has_only};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___length(variable[0])(variable[0]) /*Collection::length*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*l*/)==( TAG_Int(1)));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___Collection___has(variable[0])(variable[0],  variable[1] /*item*/) /*Collection::has*/;
+    variable[2] = variable[4];
     goto return_label25;
   } else { /*if*/
-    variable2 = TAG_Bool(( variable1 /*l*/)==( TAG_Int(0)));
-    if (UNTAG_Bool(variable2)) { /*if*/
-      variable1 =  TAG_Bool(true);
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool(( variable[3] /*l*/)==( TAG_Int(0)));
+    if (UNTAG_Bool(variable[4])) { /*if*/
+      variable[2] =  TAG_Bool(true);
       goto return_label25;
     } else { /*if*/
-      variable1 =  TAG_Bool(false);
+      variable[2] =  TAG_Bool(false);
       goto return_label25;
     }
   }
   return_label25: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___Set___count(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Set::count (bin/../lib/standard//abstract_collection.nit:216,2--222:11)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((abstract_collection___Collection___has_t)CALL( self,COLOR_abstract_collection___Collection___has))( self,  variable0 /*item*/) /*Set::has*/;
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 =  TAG_Int(1);
+  struct trace_t trace = {NULL, NULL, 216, LOCATE_abstract_collection___Set___count};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstract_collection___Collection___has(variable[0])(variable[0],  variable[1] /*item*/) /*Collection::has*/;
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    variable[2] =  TAG_Int(1);
     goto return_label26;
   } else { /*if*/
-    variable1 =  TAG_Int(0);
+    variable[2] =  TAG_Int(0);
     goto return_label26;
   }
   return_label26: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 void abstract_collection___Set___remove_all(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Set::remove_all (bin/../lib/standard//abstract_collection.nit:226,2--227:43)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((abstract_collection___RemovableCollection___remove_t)CALL( self,COLOR_abstract_collection___RemovableCollection___remove))( self,  variable0 /*item*/) /*Set::remove*/;
+  struct trace_t trace = {NULL, NULL, 226, LOCATE_abstract_collection___Set___remove_all};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_abstract_collection___RemovableCollection___remove(variable[0])(variable[0],  variable[1] /*item*/) /*RemovableCollection::remove*/;
+  return_label27: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t abstract_collection___Map_____bra(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::[] (bin/../lib/standard//abstract_collection.nit:244,2--245:19)"};
+val_t abstract_collection___MapRead___iterator(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 238, LOCATE_abstract_collection___MapRead___iterator};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method [] called (bin/../lib/standard//abstract_collection.nit:244,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 238);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
-void abstract_collection___Map_____braeq(val_t  self, val_t  param0, val_t  param1) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::[]= (bin/../lib/standard//abstract_collection.nit:247,2--248:25)"};
+val_t abstract_collection___MapRead_____bra(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 232, LOCATE_abstract_collection___MapRead_____bra};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method []= called (bin/../lib/standard//abstract_collection.nit:247,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 232);
   nit_exit(1);
   tracehead = trace.prev;
-  return;
+  return NIT_NULL;
 }
-val_t abstract_collection___Map___has_key(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::has_key (bin/../lib/standard//abstract_collection.nit:250,2--251:27)"};
+val_t abstract_collection___MapRead___has_key(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 235, LOCATE_abstract_collection___MapRead___has_key};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method has_key called (bin/../lib/standard//abstract_collection.nit:250,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 235);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
+void abstract_collection___Map_____braeq(val_t  self, val_t  param0, val_t  param1) {
+  struct trace_t trace = {NULL, NULL, 256, LOCATE_abstract_collection___Map_____braeq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 256);
+  nit_exit(1);
+  tracehead = trace.prev;
+  return;
+}
 void abstract_collection___Map___remove_at(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::remove_at (bin/../lib/standard//abstract_collection.nit:253,2--254:22)"};
+  struct trace_t trace = {NULL, NULL, 259, LOCATE_abstract_collection___Map___remove_at};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method remove_at called (bin/../lib/standard//abstract_collection.nit:253,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 259);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___Map___recover_with(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::recover_with (bin/../lib/standard//abstract_collection.nit:256,2--263:9)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-    val_t variable3;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((abstract_collection___Map___iterator_t)CALL( variable0 /*map*/,COLOR_abstract_collection___Collection___iterator))( variable0 /*map*/) /*Map::iterator*/;
-  variable1 = variable2;
+  struct trace_t trace = {NULL, NULL, 262, LOCATE_abstract_collection___Map___recover_with};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___iterator( variable[1] /*map*/)( variable[1] /*map*/) /*MapRead::iterator*/;
+  variable[3] = variable[4];
   while (true) { /*while*/
-    variable2 = ((abstract_collection___Iterator___is_ok_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___is_ok))( variable1 /*i*/) /*MapIterator::is_ok*/;
-    if (!UNTAG_Bool(variable2)) break; /* while*/
-    variable2 = ((abstract_collection___MapIterator___key_t)CALL( variable1 /*i*/,COLOR_abstract_collection___MapIterator___key))( variable1 /*i*/) /*MapIterator::key*/;
-    variable3 = ((abstract_collection___Iterator___item_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___item))( variable1 /*i*/) /*MapIterator::item*/;
-    ((abstract_collection___Map_____braeq_t)CALL( self,COLOR_abstract_collection___Map_____braeq))( self, variable2, variable3) /*Map::[]=*/;
-    ((abstract_collection___Iterator___next_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___next))( variable1 /*i*/) /*MapIterator::next*/;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___Iterator___is_ok( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[4])) break; /* while*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___MapIterator___key( variable[3] /*i*/)( variable[3] /*i*/) /*MapIterator::key*/;
+    /* Register variable[5]: Result */
+    variable[5] = CALL_abstract_collection___Iterator___item( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::item*/;
+    CALL_abstract_collection___Map_____braeq(variable[0])(variable[0], variable[4], variable[5]) /*Map::[]=*/;
+    CALL_abstract_collection___Iterator___next( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::next*/;
     continue_29: while(0);
   }
   break_29: while(0);
+  return_label28: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t abstract_collection___Map___iterator(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Map::iterator (bin/../lib/standard//abstract_collection.nit:267,2--38)"};
-  trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method iterator called (bin/../lib/standard//abstract_collection.nit:267,2)\n");
-  nit_exit(1);
-  tracehead = trace.prev;
-  return NIT_NULL;
-}
 val_t abstract_collection___MapIterator___key(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::MapIterator::key (bin/../lib/standard//abstract_collection.nit:273,2--274:12)"};
+  struct trace_t trace = {NULL, NULL, 277, LOCATE_abstract_collection___MapIterator___key};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method key called (bin/../lib/standard//abstract_collection.nit:273,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 277);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
-void abstract_collection___MapIterator___item__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::MapIterator::item= (bin/../lib/standard//abstract_collection.nit:276,2--277:19)"};
+val_t abstract_collection___IndexedCollectionRead___iterator(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 316, LOCATE_abstract_collection___IndexedCollectionRead___iterator};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method item= called (bin/../lib/standard//abstract_collection.nit:276,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 316);
   nit_exit(1);
   tracehead = trace.prev;
-  return;
+  return NIT_NULL;
 }
-val_t abstract_collection___IndexedCollection___first(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::first (bin/../lib/standard//abstract_collection.nit:285,2--290:15)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((abstract_collection___Collection___is_empty_t)CALL( self,COLOR_abstract_collection___Collection___is_empty))( self) /*IndexedCollection::is_empty*/;
-  if (!UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable0)))) { fprintf(stderr, "Assert 'not_empty'  failed: bin/../lib/standard//abstract_collection.nit:289,3--32\n"); nit_exit(1);}
-  variable0 = ((abstract_collection___Map_____bra_t)CALL( self,COLOR_abstract_collection___Map_____bra))( self,  TAG_Int(0)) /*IndexedCollection::[]*/;
+val_t abstract_collection___IndexedCollectionRead___first(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 288, LOCATE_abstract_collection___IndexedCollectionRead___first};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___is_empty(variable[0])(variable[0]) /*Collection::is_empty*/;
+  if (!UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[2])))) { fprintf(stderr, "Assert%s failed", " 'not_empty' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_abstract_collection___IndexedCollectionRead___first, LOCATE_abstract_collection, 292); nit_exit(1);}
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___MapRead_____bra(variable[0])(variable[0],  TAG_Int(0)) /*MapRead::[]*/;
+  variable[1] = variable[2];
   goto return_label30;
   return_label30: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
+}
+val_t abstract_collection___IndexedCollectionRead___last(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 296, LOCATE_abstract_collection___IndexedCollectionRead___last};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___is_empty(variable[0])(variable[0]) /*Collection::is_empty*/;
+  if (!UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable[2])))) { fprintf(stderr, "Assert%s failed", " 'not_empty' "); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_abstract_collection___IndexedCollectionRead___last, LOCATE_abstract_collection, 300); nit_exit(1);}
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Collection___length(variable[0])(variable[0]) /*Collection::length*/;
+  /* Register variable[2]: Result */
+  variable[2] = TAG_Int(UNTAG_Int(variable[2])-UNTAG_Int( TAG_Int(1)));
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___MapRead_____bra(variable[0])(variable[0], variable[2]) /*MapRead::[]*/;
+  variable[1] = variable[2];
+  goto return_label31;
+  return_label31: while(false);
+  tracehead = trace.prev;
+  return variable[1];
+}
+val_t abstract_collection___IndexedCollectionRead___index_of(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 304, LOCATE_abstract_collection___IndexedCollectionRead___index_of};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___iterator(variable[0])(variable[0]) /*IndexedCollectionRead::iterator*/;
+  variable[3] = variable[4];
+  while (true) { /*while*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___Iterator___is_ok( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::is_ok*/;
+    if (!UNTAG_Bool(variable[4])) break; /* while*/
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___Iterator___item( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::item*/;
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Bool((variable[4] ==  variable[1] /*item*/) || ((variable[4] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[4])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[4], variable[1] /*item*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[4])(variable[4],  variable[1] /*item*/) /*Object::==*/)))));
+    if (UNTAG_Bool(variable[4])) { /*if*/
+      /* Register variable[4]: Result */
+      variable[4] = CALL_abstract_collection___IndexedIterator___index( variable[3] /*i*/)( variable[3] /*i*/) /*IndexedIterator::index*/;
+      variable[2] = variable[4];
+      goto return_label32;
+    }
+    CALL_abstract_collection___Iterator___next( variable[3] /*i*/)( variable[3] /*i*/) /*Iterator::next*/;
+    continue_33: while(0);
+  }
+  break_33: while(0);
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Int(-UNTAG_Int( TAG_Int(1)));
+  variable[2] = variable[4];
+  goto return_label32;
+  return_label32: while(false);
+  tracehead = trace.prev;
+  return variable[2];
 }
-void abstract_collection___IndexedCollection___first__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::first= (bin/../lib/standard//abstract_collection.nit:293,2--296:18)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((abstract_collection___Map_____braeq_t)CALL( self,COLOR_abstract_collection___Map_____braeq))( self,  TAG_Int(0),  variable0 /*item*/) /*IndexedCollection::[]=*/;
+void abstract_collection___IndexedCollection___add(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 342, LOCATE_abstract_collection___IndexedCollection___add};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_abstract_collection___IndexedCollection___push(variable[0])(variable[0],  variable[1] /*e*/) /*IndexedCollection::push*/;
+  return_label34: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t abstract_collection___IndexedCollection___last(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::last (bin/../lib/standard//abstract_collection.nit:298,2--303:22)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((abstract_collection___Collection___is_empty_t)CALL( self,COLOR_abstract_collection___Collection___is_empty))( self) /*IndexedCollection::is_empty*/;
-  if (!UNTAG_Bool( TAG_Bool(!UNTAG_Bool(variable0)))) { fprintf(stderr, "Assert 'not_empty'  failed: bin/../lib/standard//abstract_collection.nit:302,3--32\n"); nit_exit(1);}
-  variable0 = ((abstract_collection___Collection___length_t)CALL( self,COLOR_abstract_collection___Collection___length))( self) /*IndexedCollection::length*/;
-  variable0 = TAG_Int(UNTAG_Int(variable0)-UNTAG_Int( TAG_Int(1)));
-  variable0 = ((abstract_collection___Map_____bra_t)CALL( self,COLOR_abstract_collection___Map_____bra))( self, variable0) /*IndexedCollection::[]*/;
-  goto return_label32;
-  return_label32: while(false);
+void abstract_collection___IndexedCollection___first__eq(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 325, LOCATE_abstract_collection___IndexedCollection___first__eq};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  CALL_abstract_collection___Map_____braeq(variable[0])(variable[0],  TAG_Int(0),  variable[1] /*item*/) /*Map::[]=*/;
+  return_label35: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return;
 }
 void abstract_collection___IndexedCollection___last__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::last= (bin/../lib/standard//abstract_collection.nit:306,2--314:17)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((abstract_collection___Collection___length_t)CALL( self,COLOR_abstract_collection___Collection___length))( self) /*IndexedCollection::length*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(UNTAG_Int( variable1 /*l*/)>UNTAG_Int( TAG_Int(0)));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable2 = TAG_Int(UNTAG_Int( variable1 /*l*/)-UNTAG_Int( TAG_Int(1)));
-    ((abstract_collection___Map_____braeq_t)CALL( self,COLOR_abstract_collection___Map_____braeq))( self, variable2,  variable0 /*item*/) /*IndexedCollection::[]=*/;
+  struct trace_t trace = {NULL, NULL, 330, LOCATE_abstract_collection___IndexedCollection___last__eq};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___Collection___length(variable[0])(variable[0]) /*Collection::length*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(UNTAG_Int( variable[3] /*l*/)>UNTAG_Int( TAG_Int(0)));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    /* Register variable[4]: Result */
+    variable[4] = TAG_Int(UNTAG_Int( variable[3] /*l*/)-UNTAG_Int( TAG_Int(1)));
+    CALL_abstract_collection___Map_____braeq(variable[0])(variable[0], variable[4],  variable[1] /*item*/) /*Map::[]=*/;
   } else { /*if*/
-    ((abstract_collection___Map_____braeq_t)CALL( self,COLOR_abstract_collection___Map_____braeq))( self,  TAG_Int(0),  variable0 /*item*/) /*IndexedCollection::[]=*/;
+    CALL_abstract_collection___Map_____braeq(variable[0])(variable[0],  TAG_Int(0),  variable[1] /*item*/) /*Map::[]=*/;
   }
-  tracehead = trace.prev;
-  return;
-}
-void abstract_collection___IndexedCollection___add(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::add (bin/../lib/standard//abstract_collection.nit:318,2--319:28)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  ((abstract_collection___IndexedCollection___push_t)CALL( self,COLOR_abstract_collection___IndexedCollection___push))( self,  variable0 /*e*/) /*IndexedCollection::push*/;
+  return_label36: while(false);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___IndexedCollection___push(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::push (bin/../lib/standard//abstract_collection.nit:321,2--322:15)"};
+  struct trace_t trace = {NULL, NULL, 345, LOCATE_abstract_collection___IndexedCollection___push};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method push called (bin/../lib/standard//abstract_collection.nit:321,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 345);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___IndexedCollection___append(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::append (bin/../lib/standard//abstract_collection.nit:324,2--325:81)"};
-  val_t variable0;
-  val_t variable1;
-      val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable0 /*coll*/ ==  NIT_NULL /*null*/) || (( variable0 /*coll*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable0 /*coll*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable0 /*coll*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable0 /*coll*/,COLOR_kernel___Object_____eqeq))( variable0 /*coll*/,  NIT_NULL /*null*/) /*Collection::==*/)))))));
-  if (UNTAG_Bool(variable1)) { /*if*/
-    variable1 = ((abstract_collection___Collection___iterator_t)CALL( variable0 /*coll*/,COLOR_abstract_collection___Collection___iterator))( variable0 /*coll*/) /*Collection::iterator*/;
+  struct trace_t trace = {NULL, NULL, 348, LOCATE_abstract_collection___IndexedCollection___append};
+  val_t variable[6];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool(( variable[1] /*coll*/ ==  NIT_NULL /*null*/) || (( variable[1] /*coll*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[1] /*coll*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[1] /*coll*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[1] /*coll*/)( variable[1] /*coll*/,  NIT_NULL /*null*/) /*Object::==*/)))))));
+  if (UNTAG_Bool(variable[3])) { /*if*/
+    /* Register variable[3]: For iterator */
+    variable[3] = CALL_abstract_collection___Collection___iterator( variable[1] /*coll*/)( variable[1] /*coll*/) /*Collection::iterator*/;
     while (true) { /*for*/
-      variable2 = ((abstract_collection___Iterator___is_ok_t)CALL(variable1,COLOR_abstract_collection___Iterator___is_ok))(variable1) /*Iterator::is_ok*/;
-      if (!UNTAG_Bool(variable2)) break; /*for*/
-      variable2 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-      ((abstract_collection___IndexedCollection___push_t)CALL( self,COLOR_abstract_collection___IndexedCollection___push))( self,  variable2 /*i*/) /*IndexedCollection::push*/;
-      continue_36: while(0);
-      ((abstract_collection___Iterator___next_t)CALL(variable1,COLOR_abstract_collection___Iterator___next))(variable1) /*Iterator::next*/;
+      /* Register variable[4]: For 'is_ok' result */
+      variable[4] = CALL_abstract_collection___Iterator___is_ok(variable[3])(variable[3]) /*Iterator::is_ok*/;
+      if (!UNTAG_Bool(variable[4])) break; /*for*/
+      variable[4] = CALL_abstract_collection___Iterator___item(variable[3])(variable[3]) /*Iterator::item*/ /* Ensure var: For item*/;
+      /* Register variable[5]: Local variable */
+      variable[5] = variable[4];
+      CALL_abstract_collection___IndexedCollection___push(variable[0])(variable[0],  variable[5] /*i*/) /*IndexedCollection::push*/;
+      continue_38: while(0);
+      CALL_abstract_collection___Iterator___next(variable[3])(variable[3]) /*Iterator::next*/;
     }
-    break_36: while(0);
+    break_38: while(0);
   }
+  return_label37: while(false);
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___IndexedCollection___pop(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::pop (bin/../lib/standard//abstract_collection.nit:327,2--328:12)"};
+  struct trace_t trace = {NULL, NULL, 351, LOCATE_abstract_collection___IndexedCollection___pop};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method pop called (bin/../lib/standard//abstract_collection.nit:327,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 351);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 void abstract_collection___IndexedCollection___unshift(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::unshift (bin/../lib/standard//abstract_collection.nit:330,2--331:18)"};
+  struct trace_t trace = {NULL, NULL, 354, LOCATE_abstract_collection___IndexedCollection___unshift};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method unshift called (bin/../lib/standard//abstract_collection.nit:330,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 354);
   nit_exit(1);
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___IndexedCollection___shift(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::shift (bin/../lib/standard//abstract_collection.nit:333,2--335:14)"};
-  trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method shift called (bin/../lib/standard//abstract_collection.nit:333,2)\n");
-  nit_exit(1);
-  tracehead = trace.prev;
-  return NIT_NULL;
-}
-val_t abstract_collection___IndexedCollection___index_of(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::index_of (bin/../lib/standard//abstract_collection.nit:337,2--346:11)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((abstract_collection___IndexedCollection___iterator_t)CALL( self,COLOR_abstract_collection___Collection___iterator))( self) /*IndexedCollection::iterator*/;
-  variable1 = variable2;
-  while (true) { /*while*/
-    variable2 = ((abstract_collection___Iterator___is_ok_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___is_ok))( variable1 /*i*/) /*IndexedIterator::is_ok*/;
-    if (!UNTAG_Bool(variable2)) break; /* while*/
-    variable2 = ((abstract_collection___Iterator___item_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___item))( variable1 /*i*/) /*IndexedIterator::item*/;
-    variable2 = TAG_Bool((variable2 ==  variable0 /*item*/) || ((variable2 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable2, variable0 /*item*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable2,COLOR_kernel___Object_____eqeq))(variable2,  variable0 /*item*/) /*Object::==*/)))));
-    if (UNTAG_Bool(variable2)) { /*if*/
-      variable2 = ((abstract_collection___IndexedIterator___index_t)CALL( variable1 /*i*/,COLOR_abstract_collection___IndexedIterator___index))( variable1 /*i*/) /*IndexedIterator::index*/;
-      variable1 = variable2;
-      goto return_label37;
-    }
-    ((abstract_collection___Iterator___next_t)CALL( variable1 /*i*/,COLOR_abstract_collection___Iterator___next))( variable1 /*i*/) /*IndexedIterator::next*/;
-    continue_38: while(0);
-  }
-  break_38: while(0);
-  variable2 = TAG_Int(-UNTAG_Int( TAG_Int(1)));
-  variable1 = variable2;
-  goto return_label37;
-  return_label37: while(false);
-  tracehead = trace.prev;
-  return variable1;
-}
-val_t abstract_collection___IndexedCollection___iterator(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedCollection::iterator (bin/../lib/standard//abstract_collection.nit:349,2--39)"};
-  trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method iterator called (bin/../lib/standard//abstract_collection.nit:349,2)\n");
-  nit_exit(1);
-  tracehead = trace.prev;
-  return NIT_NULL;
-}
-val_t abstract_collection___IndexedIterator___index(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedIterator::index (bin/../lib/standard//abstract_collection.nit:355,2--356:16)"};
+  struct trace_t trace = {NULL, NULL, 357, LOCATE_abstract_collection___IndexedCollection___shift};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method index called (bin/../lib/standard//abstract_collection.nit:355,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 357);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___IndexedIterator___key(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::IndexedIterator::key (bin/../lib/standard//abstract_collection.nit:358,2--359:31)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ((abstract_collection___IndexedIterator___index_t)CALL( self,COLOR_abstract_collection___IndexedIterator___index))( self) /*IndexedIterator::index*/;
+  struct trace_t trace = {NULL, NULL, 369, LOCATE_abstract_collection___IndexedIterator___key};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___IndexedIterator___index(variable[0])(variable[0]) /*IndexedIterator::index*/;
+  variable[1] = variable[2];
   goto return_label39;
   return_label39: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
-val_t abstract_collection___CoupleMap___couple_at(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMap::couple_at (bin/../lib/standard//abstract_collection.nit:365,2--367:46)"};
+val_t abstract_collection___IndexedIterator___index(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 366, LOCATE_abstract_collection___IndexedIterator___index};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  fprintf(stderr, "Deferred method couple_at called (bin/../lib/standard//abstract_collection.nit:365,2)\n");
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 366);
   nit_exit(1);
   tracehead = trace.prev;
   return NIT_NULL;
 }
 val_t abstract_collection___CoupleMap_____bra(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMap::[] (bin/../lib/standard//abstract_collection.nit:369,2--375:18)"};
-  val_t variable0;
-  val_t variable1;
-  val_t variable2;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable2 = ((abstract_collection___CoupleMap___couple_at_t)CALL( self,COLOR_abstract_collection___CoupleMap___couple_at))( self,  variable0 /*key*/) /*CoupleMap::couple_at*/;
-  variable1 = variable2;
-  variable2 = TAG_Bool(( variable1 /*c*/ ==  NIT_NULL /*null*/) || (( variable1 /*c*/ != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL( variable1 /*c*/,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable1 /*c*/, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL( variable1 /*c*/,COLOR_kernel___Object_____eqeq))( variable1 /*c*/,  NIT_NULL /*null*/) /*Couple::==*/)))));
-  if (UNTAG_Bool(variable2)) { /*if*/
-    variable1 =  NIT_NULL /*null*/;
-    goto return_label40;
+  struct trace_t trace = {NULL, NULL, 380, LOCATE_abstract_collection___CoupleMap_____bra};
+  val_t variable[5];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Local variable */
+  /* Register variable[4]: Result */
+  variable[4] = CALL_abstract_collection___CoupleMap___couple_at(variable[0])(variable[0],  variable[1] /*key*/) /*CoupleMap::couple_at*/;
+  variable[3] = variable[4];
+  /* Register variable[4]: Result */
+  variable[4] = TAG_Bool(( variable[3] /*c*/ ==  NIT_NULL /*null*/) || (( variable[3] /*c*/ != NIT_NULL) && ((CALL_kernel___Object_____eqeq( variable[3] /*c*/)==kernel___Object_____eqeq)?(IS_EQUAL_NN( variable[3] /*c*/, NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq( variable[3] /*c*/)( variable[3] /*c*/,  NIT_NULL /*null*/) /*Object::==*/)))));
+  if (UNTAG_Bool(variable[4])) { /*if*/
+    fprintf(stderr, "Aborted"); fprintf(stderr, " in %s (%s:%d)\n", LOCATE_abstract_collection___CoupleMap_____bra, LOCATE_abstract_collection, 384); nit_exit(1);
   } else { /*if*/
-    variable2 = ((abstract_collection___Couple___second_t)CALL( variable1 /*c*/,COLOR_abstract_collection___Couple___second))( variable1 /*c*/) /*Couple::second*/;
-    variable1 = variable2;
+    /* Register variable[4]: Result */
+    variable[4] = CALL_abstract_collection___Couple___second( variable[3] /*c*/)( variable[3] /*c*/) /*Couple::second*/;
+    variable[2] = variable[4];
     goto return_label40;
   }
   return_label40: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
 val_t abstract_collection___CoupleMap___has_key(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMap::has_key (bin/../lib/standard//abstract_collection.nit:379,2--57)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ((abstract_collection___CoupleMap___couple_at_t)CALL( self,COLOR_abstract_collection___CoupleMap___couple_at))( self,  variable0 /*key*/) /*CoupleMap::couple_at*/;
-  variable1 = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*Couple::==*/)))))));
+  struct trace_t trace = {NULL, NULL, 390, LOCATE_abstract_collection___CoupleMap___has_key};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Method return value and escape marker */
+  /* Register variable[3]: Result */
+  variable[3] = CALL_abstract_collection___CoupleMap___couple_at(variable[0])(variable[0],  variable[1] /*key*/) /*CoupleMap::couple_at*/;
+  /* Register variable[3]: Result */
+  variable[3] = TAG_Bool(!UNTAG_Bool(TAG_Bool((variable[3] ==  NIT_NULL /*null*/) || ((variable[3] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[3])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[3], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[3])(variable[3],  NIT_NULL /*null*/) /*Object::==*/)))))));
+  variable[2] = variable[3];
   goto return_label41;
   return_label41: while(false);
   tracehead = trace.prev;
-  return variable1;
+  return variable[2];
 }
-val_t abstract_collection___CoupleMapIterator___item(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::item (bin/../lib/standard//abstract_collection.nit:387,2--44)"};
-  val_t variable0;
+val_t abstract_collection___CoupleMap___couple_at(val_t  self, val_t  param0) {
+  struct trace_t trace = {NULL, NULL, 376, LOCATE_abstract_collection___CoupleMap___couple_at};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-  variable0 = ((abstract_collection___Iterator___item_t)CALL(variable0,COLOR_abstract_collection___Iterator___item))(variable0) /*Iterator::item*/;
-  variable0 = ((abstract_collection___Couple___second_t)CALL(variable0,COLOR_abstract_collection___Couple___second))(variable0) /*Couple::second*/;
+  trace.file = LOCATE_abstract_collection;
+  fprintf(stderr, "Deferred method called");
+  fprintf(stderr, " (%s:%d)\n", LOCATE_abstract_collection, 376);
+  nit_exit(1);
+  tracehead = trace.prev;
+  return NIT_NULL;
+}
+val_t abstract_collection___CoupleMapIterator___item(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 398, LOCATE_abstract_collection___CoupleMapIterator___item};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Iterator___item(variable[2])(variable[2]) /*Iterator::item*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Couple___second(variable[2])(variable[2]) /*Couple::second*/;
+  variable[1] = variable[2];
   goto return_label42;
   return_label42: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
-void abstract_collection___CoupleMapIterator___item__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::item= (bin/../lib/standard//abstract_collection.nit:389,2--45)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-  variable1 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-  ((abstract_collection___Couple___second__eq_t)CALL(variable1,COLOR_abstract_collection___Couple___second__eq))(variable1,  variable0 /*e*/) /*Couple::second=*/;
+void abstract_collection___CoupleMapIterator___next(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 406, LOCATE_abstract_collection___CoupleMapIterator___next};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+  CALL_abstract_collection___Iterator___next(variable[2])(variable[2]) /*Iterator::next*/;
+  while (true) { /*while*/
+    /* Register variable[2]: Result */
+    variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+    /* Register variable[2]: Result */
+    variable[2] = CALL_abstract_collection___Iterator___is_ok(variable[2])(variable[2]) /*Iterator::is_ok*/;
+    /* Ensure var variable[2]: Left 'and' operand*/
+    if (UNTAG_Bool(variable[2])) { /* and */
+      /* Register variable[2]: Result */
+      variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+      /* Register variable[2]: Result */
+      variable[2] = CALL_abstract_collection___Iterator___item(variable[2])(variable[2]) /*Iterator::item*/;
+      /* Register variable[2]: Result */
+      variable[2] = TAG_Bool((variable[2] ==  NIT_NULL /*null*/) || ((variable[2] != NIT_NULL) && ((CALL_kernel___Object_____eqeq(variable[2])==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable[2], NIT_NULL /*null*/)):(UNTAG_Bool(CALL_kernel___Object_____eqeq(variable[2])(variable[2],  NIT_NULL /*null*/) /*Object::==*/)))));
+    }
+    /* Register variable[2]: Result */
+    if (!UNTAG_Bool(variable[2])) break; /* while*/
+    /* Register variable[2]: Result */
+    variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+    CALL_abstract_collection___Iterator___next(variable[2])(variable[2]) /*Iterator::next*/;
+    continue_44: while(0);
+  }
+  break_44: while(0);
+  return_label43: while(false);
   tracehead = trace.prev;
   return;
 }
-val_t abstract_collection___CoupleMapIterator___key(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::key (bin/../lib/standard//abstract_collection.nit:391,2--42)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-  variable0 = ((abstract_collection___Iterator___item_t)CALL(variable0,COLOR_abstract_collection___Iterator___item))(variable0) /*Iterator::item*/;
-  variable0 = ((abstract_collection___Couple___first_t)CALL(variable0,COLOR_abstract_collection___Couple___first))(variable0) /*Couple::first*/;
-  goto return_label44;
-  return_label44: while(false);
-  tracehead = trace.prev;
-  return variable0;
-}
 val_t abstract_collection___CoupleMapIterator___is_ok(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::is_ok (bin/../lib/standard//abstract_collection.nit:393,2--39)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-  variable0 = ((abstract_collection___Iterator___is_ok_t)CALL(variable0,COLOR_abstract_collection___Iterator___is_ok))(variable0) /*Iterator::is_ok*/;
+  struct trace_t trace = {NULL, NULL, 404, LOCATE_abstract_collection___CoupleMapIterator___is_ok};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Iterator___is_ok(variable[2])(variable[2]) /*Iterator::is_ok*/;
+  variable[1] = variable[2];
   goto return_label45;
   return_label45: while(false);
   tracehead = trace.prev;
-  return variable0;
+  return variable[1];
 }
-void abstract_collection___CoupleMapIterator___next(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::next (bin/../lib/standard//abstract_collection.nit:395,2--398:56)"};
-  val_t variable0;
-    val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-  ((abstract_collection___Iterator___next_t)CALL(variable0,COLOR_abstract_collection___Iterator___next))(variable0) /*Iterator::next*/;
-  while (true) { /*while*/
-    variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-    variable0 = ((abstract_collection___Iterator___is_ok_t)CALL(variable0,COLOR_abstract_collection___Iterator___is_ok))(variable0) /*Iterator::is_ok*/;
-    variable1 = variable0;
-    if (UNTAG_Bool(variable1)) { /* and */
-      variable1 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-      variable1 = ((abstract_collection___Iterator___item_t)CALL(variable1,COLOR_abstract_collection___Iterator___item))(variable1) /*Iterator::item*/;
-      variable1 = TAG_Bool((variable1 ==  NIT_NULL /*null*/) || ((variable1 != NIT_NULL) && ((((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))==kernel___Object_____eqeq)?(IS_EQUAL_NN(variable1, NIT_NULL /*null*/)):(UNTAG_Bool(((kernel___Object_____eqeq_t)CALL(variable1,COLOR_kernel___Object_____eqeq))(variable1,  NIT_NULL /*null*/) /*Couple::==*/)))));
-    }
-    variable0 = variable1;
-    if (!UNTAG_Bool(variable0)) break; /* while*/
-    variable0 = ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/;
-    ((abstract_collection___Iterator___next_t)CALL(variable0,COLOR_abstract_collection___Iterator___next))(variable0) /*Iterator::next*/;
-    continue_47: while(0);
-  }
-  break_47: while(0);
-  tracehead = trace.prev;
-  return;
+val_t abstract_collection___CoupleMapIterator___key(val_t  self) {
+  struct trace_t trace = {NULL, NULL, 402, LOCATE_abstract_collection___CoupleMapIterator___key};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Method return value and escape marker */
+  /* Register variable[2]: Result */
+  variable[2] = ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Iterator___item(variable[2])(variable[2]) /*Iterator::item*/;
+  /* Register variable[2]: Result */
+  variable[2] = CALL_abstract_collection___Couple___first(variable[2])(variable[2]) /*Couple::first*/;
+  variable[1] = variable[2];
+  goto return_label46;
+  return_label46: while(false);
+  tracehead = trace.prev;
+  return variable[1];
 }
 void abstract_collection___CoupleMapIterator___init(val_t  self, val_t  param0, int* init_table) {
-  struct trace_t trace = {NULL, "abstract_collection::CoupleMapIterator::init (bin/../lib/standard//abstract_collection.nit:403,2--44)"};
-  val_t variable0;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_CoupleMapIterator].i]) return;
-  ATTR_abstract_collection___CoupleMapIterator____iter( self) /*CoupleMapIterator::_iter*/ =  variable0 /*i*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_CoupleMapIterator].i] = 1;
+  struct trace_t trace = {NULL, NULL, 414, LOCATE_abstract_collection___CoupleMapIterator___init};
+  val_t variable[3];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  if (init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_CoupleMapIterator].i]) return;
+  /* Register variable[2]: Method return value and escape marker */
+  ATTR_abstract_collection___CoupleMapIterator____iter(variable[0]) /*CoupleMapIterator::_iter*/ =  variable[1] /*i*/;
+  return_label47: while(false);
+  init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_CoupleMapIterator].i] = 1;
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___Couple___first(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Couple::first (bin/../lib/standard//abstract_collection.nit:411,2--412:33)"};
+  struct trace_t trace = {NULL, NULL, 422, LOCATE_abstract_collection___Couple___first};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   tracehead = trace.prev;
   return ATTR_abstract_collection___Couple____first( self) /*Couple::_first*/;
 }
 void abstract_collection___Couple___first__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Couple::first= (bin/../lib/standard//abstract_collection.nit:411,2--412:33)"};
+  struct trace_t trace = {NULL, NULL, 422, LOCATE_abstract_collection___Couple___first__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   ATTR_abstract_collection___Couple____first( self) /*Couple::_first*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 val_t abstract_collection___Couple___second(val_t  self) {
-  struct trace_t trace = {NULL, "abstract_collection::Couple::second (bin/../lib/standard//abstract_collection.nit:414,2--415:34)"};
+  struct trace_t trace = {NULL, NULL, 425, LOCATE_abstract_collection___Couple___second};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   tracehead = trace.prev;
   return ATTR_abstract_collection___Couple____second( self) /*Couple::_second*/;
 }
 void abstract_collection___Couple___second__eq(val_t  self, val_t  param0) {
-  struct trace_t trace = {NULL, "abstract_collection::Couple::second= (bin/../lib/standard//abstract_collection.nit:414,2--415:34)"};
+  struct trace_t trace = {NULL, NULL, 425, LOCATE_abstract_collection___Couple___second__eq};
+  val_t *variable = NULL;
+  struct WBT_ **closurevariable = NULL;
   trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
   ATTR_abstract_collection___Couple____second( self) /*Couple::_second*/ =  param0;
   tracehead = trace.prev;
   return;
 }
 void abstract_collection___Couple___init(val_t  self, val_t  param0, val_t  param1, int* init_table) {
-  struct trace_t trace = {NULL, "abstract_collection::Couple::init (bin/../lib/standard//abstract_collection.nit:417,2--421:13)"};
-  val_t variable0;
-  val_t variable1;
-  trace.prev = tracehead; tracehead = &trace;
-  variable0 =  param0;
-  variable1 =  param1;
-  if (init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_Couple].i]) return;
-  ATTR_abstract_collection___Couple____first( self) /*Couple::_first*/ =  variable0 /*f*/;
-  ATTR_abstract_collection___Couple____second( self) /*Couple::_second*/ =  variable1 /*s*/;
-  init_table[VAL2OBJ( self)->vft[INIT_TABLE_POS_Couple].i] = 1;
+  struct trace_t trace = {NULL, NULL, 428, LOCATE_abstract_collection___Couple___init};
+  val_t variable[4];
+  struct WBT_ **closurevariable = NULL;
+  trace.prev = tracehead; tracehead = &trace;
+  trace.file = LOCATE_abstract_collection;
+  /* Register variable[0]: Local variable */
+  variable[0] =  self;
+  /* Register variable[1]: Local variable */
+  variable[1] =  param0;
+  /* Register variable[2]: Local variable */
+  variable[2] =  param1;
+  if (init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_Couple].i]) return;
+  /* Register variable[3]: Method return value and escape marker */
+  ATTR_abstract_collection___Couple____first(variable[0]) /*Couple::_first*/ =  variable[1] /*f*/;
+  ATTR_abstract_collection___Couple____second(variable[0]) /*Couple::_second*/ =  variable[2] /*s*/;
+  return_label48: while(false);
+  init_table[VAL2OBJ(variable[0])->vft[INIT_TABLE_POS_Couple].i] = 1;
   tracehead = trace.prev;
   return;
 }