c_src: update to have intern args

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

diff --git a/c_src/syntax___flow._sep.c b/c_src/syntax___flow._sep.c
index fd2e601..99e23bb 100644 (file)
--- a/c_src/syntax___flow._sep.c
+++ b/c_src/syntax___flow._sep.c
@@ -1,5 +1,6 @@
 /* This C file is generated by NIT to compile module syntax___flow. */
 #include "syntax___flow._sep.h"
+static const char LOCATE_syntax___flow___FlowContext___check_is_set[] = "flow::FlowContext::check_is_set";
 void syntax___flow___FlowContext___check_is_set(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -13,6 +14,7 @@ void syntax___flow___FlowContext___check_is_set(val_t p0, val_t p1, val_t p2){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___check_is_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -21,17 +23,17 @@ void syntax___flow___FlowContext___check_is_set(val_t p0, val_t p1, val_t p2){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//flow.nit:37 */
+  /* syntax/flow.nit:37 */
   REGB0 = CALL_syntax___flow___Variable___must_be_set(fra.me.REG[2])(fra.me.REG[2]);
   if (UNTAG_Bool(REGB0)) {
     REGB0 = CALL_syntax___flow___FlowContext___is_set(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:38 */
+    /* syntax/flow.nit:38 */
     REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
@@ -66,6 +68,7 @@ void syntax___flow___FlowContext___check_is_set(val_t p0, val_t p1, val_t p2){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___flow___FlowContext___stype[] = "flow::FlowContext::stype";
 val_t syntax___flow___FlowContext___stype(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -75,17 +78,19 @@ val_t syntax___flow___FlowContext___stype(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:46 */
+  /* syntax/flow.nit:46 */
   fra.me.REG[1] = CALL_syntax___syntax_base___Variable___stype(fra.me.REG[1])(fra.me.REG[1]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___flow___FlowContext___sub_setvariable[] = "flow::FlowContext::sub_setvariable";
 val_t syntax___flow___FlowContext___sub_setvariable(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -96,15 +101,16 @@ val_t syntax___flow___FlowContext___sub_setvariable(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___sub_setvariable;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:52 */
+  /* syntax/flow.nit:52 */
   fra.me.REG[2] = CALL_syntax___flow___FlowContext___node(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[2] = NEW_SubFlowContext_syntax___flow___SubFlowContext___with_prev(fra.me.REG[0], fra.me.REG[2]);
-  /* ./syntax//flow.nit:53 */
+  /* syntax/flow.nit:53 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -112,12 +118,13 @@ val_t syntax___flow___FlowContext___sub_setvariable(val_t p0, val_t p1){
   }
   fra.me.REG[0] = ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[2]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//flow.nit:54 */
+  /* syntax/flow.nit:54 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_syntax___flow___FlowContext___sub_unreash[] = "flow::FlowContext::sub_unreash";
 val_t syntax___flow___FlowContext___sub_unreash(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -128,21 +135,23 @@ val_t syntax___flow___FlowContext___sub_unreash(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___sub_unreash;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:60 */
+  /* syntax/flow.nit:60 */
   fra.me.REG[1] = NEW_SubFlowContext_syntax___flow___SubFlowContext___with_prev(fra.me.REG[0], fra.me.REG[1]);
-  /* ./syntax//flow.nit:61 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/flow.nit:61 */
+  REGB0 = TAG_Bool(1);
   ATTR_syntax___flow___FlowContext____unreash(fra.me.REG[1]) = REGB0;
-  /* ./syntax//flow.nit:62 */
+  /* syntax/flow.nit:62 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___flow___FlowContext___sub_with[] = "flow::FlowContext::sub_with";
 val_t syntax___flow___FlowContext___sub_with(val_t p0, val_t p1, val_t p2, val_t p3){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t tmp;
@@ -152,6 +161,7 @@ val_t syntax___flow___FlowContext___sub_with(val_t p0, val_t p1, val_t p2, val_t
   fra.me.meth = LOCATE_syntax___flow___FlowContext___sub_with;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -160,13 +170,14 @@ val_t syntax___flow___FlowContext___sub_with(val_t p0, val_t p1, val_t p2, val_t
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./syntax//flow.nit:68 */
+  /* syntax/flow.nit:68 */
   fra.me.REG[3] = NEW_CastFlowContext_syntax___flow___CastFlowContext___init(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[3];
 }
+static const char LOCATE_syntax___flow___FlowContext___merge[] = "flow::FlowContext::merge";
 val_t syntax___flow___FlowContext___merge(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
   val_t REGB0;
@@ -179,6 +190,7 @@ val_t syntax___flow___FlowContext___merge(val_t p0, val_t p1, val_t p2){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___merge;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -188,26 +200,26 @@ val_t syntax___flow___FlowContext___merge(val_t p0, val_t p1, val_t p2){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/standard//collection//array.nit:229 */
+  /* ../lib/standard/collection/array.nit:266 */
   fra.me.REG[3] = fra.me.REG[2];
-  /* ./../lib/standard//collection//array.nit:232 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:233 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-  /* ./../lib/standard//collection//array.nit:234 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-  /* ./../lib/standard//collection//array.nit:235 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -215,58 +227,58 @@ val_t syntax___flow___FlowContext___merge(val_t p0, val_t p1, val_t p2){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/standard//collection//array.nit:236 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:652 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB0)];
-      /* ./syntax//flow.nit:76 */
+      /* syntax/flow.nit:76 */
       REGB1 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[5])(fra.me.REG[5]);
       REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
       if (UNTAG_Bool(REGB1)) {
       } else {
         nit_abort("Assert failed", NULL, LOCATE_syntax___flow, 76);
       }
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB0 = REGB1;
     } else {
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ./../lib/standard//collection//array.nit:23 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ./syntax//flow.nit:77 */
+  /* syntax/flow.nit:77 */
   REGB1 = TAG_Int(1);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./syntax//flow.nit:77 */
+    /* syntax/flow.nit:77 */
     REGB2 = REGB1;
   }
   if (UNTAG_Bool(REGB2)) {
     fra.me.REG[4] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[2])(fra.me.REG[2]);
     goto label2;
   }
-  /* ./syntax//flow.nit:78 */
+  /* syntax/flow.nit:78 */
   fra.me.REG[2] = NEW_MergeFlowContext_syntax___flow___MergeFlowContext___init(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2]);
   fra.me.REG[4] = fra.me.REG[2];
   goto label2;
@@ -274,6 +286,7 @@ val_t syntax___flow___FlowContext___merge(val_t p0, val_t p1, val_t p2){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[4];
 }
+static const char LOCATE_syntax___flow___FlowContext___merge_reash[] = "flow::FlowContext::merge_reash";
 val_t syntax___flow___FlowContext___merge_reash(val_t p0, val_t p1, val_t p2, val_t p3){
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
   val_t REGB0;
@@ -286,6 +299,7 @@ val_t syntax___flow___FlowContext___merge_reash(val_t p0, val_t p1, val_t p2, va
   fra.me.meth = LOCATE_syntax___flow___FlowContext___merge_reash;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -296,28 +310,28 @@ val_t syntax___flow___FlowContext___merge_reash(val_t p0, val_t p1, val_t p2, va
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./syntax//flow.nit:86 */
+  /* syntax/flow.nit:86 */
   REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[2])(fra.me.REG[2]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:87 */
+    /* syntax/flow.nit:87 */
     REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[3])(fra.me.REG[3]);
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//flow.nit:88 */
+      /* syntax/flow.nit:88 */
       fra.me.REG[4] = CALL_syntax___flow___FlowContext___sub_unreash(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
       goto label1;
     } else {
-      /* ./syntax//flow.nit:90 */
+      /* syntax/flow.nit:90 */
       fra.me.REG[5] = fra.me.REG[3];
-      /* ./syntax//flow.nit:91 */
+      /* syntax/flow.nit:91 */
       fra.me.REG[3] = fra.me.REG[2];
-      /* ./syntax//flow.nit:92 */
+      /* syntax/flow.nit:92 */
       fra.me.REG[2] = fra.me.REG[5];
     }
   }
-  /* ./syntax//flow.nit:96 */
+  /* syntax/flow.nit:96 */
   REGB0 = CALL_syntax___flow___FlowContext___unreash(fra.me.REG[3])(fra.me.REG[3]);
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     REGB1 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
     if (UNTAG_Bool(REGB1)) {
@@ -328,11 +342,11 @@ val_t syntax___flow___FlowContext___merge_reash(val_t p0, val_t p1, val_t p2, va
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:97 */
+    /* syntax/flow.nit:97 */
     fra.me.REG[4] = fra.me.REG[2];
     goto label1;
   } else {
-    /* ./syntax//flow.nit:104 */
+    /* syntax/flow.nit:104 */
     REGB0 = TAG_Int(2);
     fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
@@ -345,6 +359,7 @@ val_t syntax___flow___FlowContext___merge_reash(val_t p0, val_t p1, val_t p2, va
   stack_frame_head = fra.me.prev;
   return fra.me.REG[4];
 }
+static const char LOCATE_syntax___flow___FlowContext___node[] = "flow::FlowContext::node";
 val_t syntax___flow___FlowContext___node(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -355,9 +370,10 @@ val_t syntax___flow___FlowContext___node(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___node;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:111 */
+  /* syntax/flow.nit:111 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____node(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -367,6 +383,7 @@ val_t syntax___flow___FlowContext___node(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___flow___FlowContext___init[] = "flow::FlowContext::init";
 void syntax___flow___FlowContext___init(val_t p0, val_t p1, val_t p2, int* init_table){
   int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___flow___FlowContext].i;
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
@@ -378,20 +395,22 @@ void syntax___flow___FlowContext___init(val_t p0, val_t p1, val_t p2, int* init_
   fra.me.meth = LOCATE_syntax___flow___FlowContext___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//flow.nit:116 */
+  /* syntax/flow.nit:116 */
   ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./syntax//flow.nit:117 */
+  /* syntax/flow.nit:117 */
   ATTR_syntax___flow___FlowContext____node(fra.me.REG[0]) = fra.me.REG[2];
   stack_frame_head = fra.me.prev;
   init_table[itpos0] = 1;
   return;
 }
+static const char LOCATE_syntax___flow___FlowContext___unreash[] = "flow::FlowContext::unreash";
 val_t syntax___flow___FlowContext___unreash(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -402,9 +421,10 @@ val_t syntax___flow___FlowContext___unreash(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___unreash;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:120 */
+  /* syntax/flow.nit:120 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____unreash(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -414,6 +434,7 @@ val_t syntax___flow___FlowContext___unreash(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___FlowContext___already_unreash[] = "flow::FlowContext::already_unreash";
 val_t syntax___flow___FlowContext___already_unreash(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -424,9 +445,10 @@ val_t syntax___flow___FlowContext___already_unreash(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___already_unreash;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:123 */
+  /* syntax/flow.nit:123 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____already_unreash(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -436,6 +458,7 @@ val_t syntax___flow___FlowContext___already_unreash(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___FlowContext___already_unreash__eq[] = "flow::FlowContext::already_unreash=";
 void syntax___flow___FlowContext___already_unreash__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -446,14 +469,16 @@ void syntax___flow___FlowContext___already_unreash__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___already_unreash__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./syntax//flow.nit:123 */
+  /* syntax/flow.nit:123 */
   ATTR_syntax___flow___FlowContext____already_unreash(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_syntax___flow___FlowContext___set_variables[] = "flow::FlowContext::set_variables";
 val_t syntax___flow___FlowContext___set_variables(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -464,9 +489,10 @@ val_t syntax___flow___FlowContext___set_variables(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___set_variables;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:127 */
+  /* syntax/flow.nit:127 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -476,6 +502,7 @@ val_t syntax___flow___FlowContext___set_variables(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___flow___FlowContext___is_set[] = "flow::FlowContext::is_set";
 val_t syntax___flow___FlowContext___is_set(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -486,11 +513,12 @@ val_t syntax___flow___FlowContext___is_set(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___FlowContext___is_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:133 */
+  /* syntax/flow.nit:133 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -503,6 +531,7 @@ val_t syntax___flow___FlowContext___is_set(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___RootFlowContext___init[] = "flow::RootFlowContext::init";
 void syntax___flow___RootFlowContext___init(val_t p0, val_t p1, val_t p2, int* init_table){
   int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___flow___RootFlowContext].i;
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
@@ -514,18 +543,20 @@ void syntax___flow___RootFlowContext___init(val_t p0, val_t p1, val_t p2, int* i
   fra.me.meth = LOCATE_syntax___flow___RootFlowContext___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//flow.nit:142 */
+  /* syntax/flow.nit:142 */
   CALL_syntax___flow___FlowContext___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], init_table);
   stack_frame_head = fra.me.prev;
   init_table[itpos1] = 1;
   return;
 }
+static const char LOCATE_syntax___flow___SubFlowContext___prev[] = "flow::SubFlowContext::prev";
 val_t syntax___flow___SubFlowContext___prev(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -536,9 +567,10 @@ val_t syntax___flow___SubFlowContext___prev(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___SubFlowContext___prev;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:149 */
+  /* syntax/flow.nit:149 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___SubFlowContext____prev(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -548,6 +580,7 @@ val_t syntax___flow___SubFlowContext___prev(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_syntax___flow___SubFlowContext___is_set[] = "flow::SubFlowContext::(flow::FlowContext::is_set)";
 val_t syntax___flow___SubFlowContext___is_set(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -559,12 +592,13 @@ val_t syntax___flow___SubFlowContext___is_set(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___SubFlowContext___is_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:153 */
+  /* syntax/flow.nit:153 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -573,7 +607,7 @@ val_t syntax___flow___SubFlowContext___is_set(val_t p0, val_t p1){
   fra.me.REG[2] = ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     REGB1 = TAG_Bool(ATTR_syntax___flow___SubFlowContext____prev(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
@@ -589,6 +623,7 @@ val_t syntax___flow___SubFlowContext___is_set(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___SubFlowContext___stype[] = "flow::SubFlowContext::(flow::FlowContext::stype)";
 val_t syntax___flow___SubFlowContext___stype(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -598,11 +633,12 @@ val_t syntax___flow___SubFlowContext___stype(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___SubFlowContext___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:158 */
+  /* syntax/flow.nit:158 */
   fra.me.REG[0] = CALL_syntax___flow___SubFlowContext___prev(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[1] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   goto label1;
@@ -610,6 +646,7 @@ val_t syntax___flow___SubFlowContext___stype(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_syntax___flow___SubFlowContext___with_prev[] = "flow::SubFlowContext::with_prev";
 void syntax___flow___SubFlowContext___with_prev(val_t p0, val_t p1, val_t p2, int* init_table){
   int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___flow___SubFlowContext].i;
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
@@ -622,6 +659,7 @@ void syntax___flow___SubFlowContext___with_prev(val_t p0, val_t p1, val_t p2, in
   fra.me.meth = LOCATE_syntax___flow___SubFlowContext___with_prev;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -629,7 +667,7 @@ void syntax___flow___SubFlowContext___with_prev(val_t p0, val_t p1, val_t p2, in
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./syntax//flow.nit:163 */
+  /* syntax/flow.nit:163 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -637,12 +675,13 @@ void syntax___flow___SubFlowContext___with_prev(val_t p0, val_t p1, val_t p2, in
   }
   fra.me.REG[3] = ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[1]);
   CALL_syntax___flow___FlowContext___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3], fra.me.REG[2], init_table);
-  /* ./syntax//flow.nit:164 */
+  /* syntax/flow.nit:164 */
   ATTR_syntax___flow___SubFlowContext____prev(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   init_table[itpos2] = 1;
   return;
 }
+static const char LOCATE_syntax___flow___CastFlowContext___stype[] = "flow::CastFlowContext::(flow::FlowContext::stype)";
 val_t syntax___flow___CastFlowContext___stype(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -654,12 +693,13 @@ val_t syntax___flow___CastFlowContext___stype(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___CastFlowContext___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:179 */
+  /* syntax/flow.nit:179 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___CastFlowContext____variable(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -673,11 +713,11 @@ val_t syntax___flow___CastFlowContext___stype(val_t p0, val_t p1){
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:180 */
+    /* syntax/flow.nit:180 */
     fra.me.REG[2] = ATTR_syntax___flow___CastFlowContext____stype(fra.me.REG[0]);
     goto label1;
   } else {
-    /* ./syntax//flow.nit:182 */
+    /* syntax/flow.nit:182 */
     fra.me.REG[0] = CALL_syntax___flow___SubFlowContext___prev(fra.me.REG[0])(fra.me.REG[0]);
     fra.me.REG[1] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
     fra.me.REG[2] = fra.me.REG[1];
@@ -687,6 +727,7 @@ val_t syntax___flow___CastFlowContext___stype(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_syntax___flow___CastFlowContext___init[] = "flow::CastFlowContext::init";
 void syntax___flow___CastFlowContext___init(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4, int* init_table){
   int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___flow___CastFlowContext].i;
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
@@ -698,6 +739,7 @@ void syntax___flow___CastFlowContext___init(val_t p0, val_t p1, val_t p2, val_t
   fra.me.meth = LOCATE_syntax___flow___CastFlowContext___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -708,16 +750,17 @@ void syntax___flow___CastFlowContext___init(val_t p0, val_t p1, val_t p2, val_t
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
   fra.me.REG[4] = p4;
-  /* ./syntax//flow.nit:188 */
+  /* syntax/flow.nit:188 */
   CALL_syntax___flow___SubFlowContext___with_prev(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], init_table);
-  /* ./syntax//flow.nit:189 */
+  /* syntax/flow.nit:189 */
   ATTR_syntax___flow___CastFlowContext____variable(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./syntax//flow.nit:190 */
+  /* syntax/flow.nit:190 */
   ATTR_syntax___flow___CastFlowContext____stype(fra.me.REG[0]) = fra.me.REG[4];
   stack_frame_head = fra.me.prev;
   init_table[itpos3] = 1;
   return;
 }
+static const char LOCATE_syntax___flow___MergeFlowContext___init[] = "flow::MergeFlowContext::init";
 void syntax___flow___MergeFlowContext___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
   int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_syntax___flow___MergeFlowContext].i;
   struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
@@ -730,6 +773,7 @@ void syntax___flow___MergeFlowContext___init(val_t p0, val_t p1, val_t p2, val_t
   fra.me.meth = LOCATE_syntax___flow___MergeFlowContext___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -740,9 +784,9 @@ void syntax___flow___MergeFlowContext___init(val_t p0, val_t p1, val_t p2, val_t
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./syntax//flow.nit:204 */
+  /* syntax/flow.nit:204 */
   fra.me.REG[4] = fra.me.REG[0];
-  /* ./syntax//flow.nit:206 */
+  /* syntax/flow.nit:206 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -750,14 +794,15 @@ void syntax___flow___MergeFlowContext___init(val_t p0, val_t p1, val_t p2, val_t
   }
   fra.me.REG[5] = ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[1]);
   CALL_syntax___flow___FlowContext___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5], fra.me.REG[2], init_table);
-  /* ./syntax//flow.nit:207 */
+  /* syntax/flow.nit:207 */
   ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[4]) = fra.me.REG[3];
-  /* ./syntax//flow.nit:208 */
+  /* syntax/flow.nit:208 */
   ATTR_syntax___flow___MergeFlowContext____base(fra.me.REG[4]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   init_table[itpos4] = 1;
   return;
 }
+static const char LOCATE_syntax___flow___MergeFlowContext___stype[] = "flow::MergeFlowContext::(flow::FlowContext::stype)";
 val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -768,13 +813,14 @@ val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___MergeFlowContext___stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:213 */
+  /* syntax/flow.nit:213 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____stypes(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -783,7 +829,7 @@ val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
   fra.me.REG[2] = ATTR_syntax___flow___MergeFlowContext____stypes(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___MapRead___has_key(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:214 */
+    /* syntax/flow.nit:214 */
     REGB0 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____stypes(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
@@ -793,9 +839,9 @@ val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
     fra.me.REG[2] = CALL_standard___collection___abstract_collection___MapRead_____bra(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
     goto label1;
   } else {
-    /* ./syntax//flow.nit:216 */
+    /* syntax/flow.nit:216 */
     fra.me.REG[3] = CALL_syntax___flow___MergeFlowContext___merge_stype(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    /* ./syntax//flow.nit:217 */
+    /* syntax/flow.nit:217 */
     REGB0 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____stypes(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
@@ -803,7 +849,7 @@ val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
     }
     fra.me.REG[0] = ATTR_syntax___flow___MergeFlowContext____stypes(fra.me.REG[0]);
     CALL_standard___collection___abstract_collection___Map_____braeq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[3]);
-    /* ./syntax//flow.nit:218 */
+    /* syntax/flow.nit:218 */
     fra.me.REG[2] = fra.me.REG[3];
     goto label1;
   }
@@ -811,6 +857,7 @@ val_t syntax___flow___MergeFlowContext___stype(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_syntax___flow___MergeFlowContext___merge_stype[] = "flow::MergeFlowContext::merge_stype";
 val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[8];} fra;
   val_t REGB0;
@@ -824,6 +871,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___MergeFlowContext___merge_stype;
   fra.me.has_broke = 0;
   fra.me.REG_size = 9;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -835,11 +883,11 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
   fra.me.REG[8] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:224 */
+  /* syntax/flow.nit:224 */
   fra.me.REG[2] = NIT_NULL;
-  /* ./syntax//flow.nit:225 */
-  REGB0 = TAG_Bool(false);
-  /* ./syntax//flow.nit:226 */
+  /* syntax/flow.nit:225 */
+  REGB0 = TAG_Bool(0);
+  /* syntax/flow.nit:226 */
   REGB1 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
@@ -852,31 +900,31 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
     nit_abort("Reciever is null", NULL, LOCATE_syntax___flow, 226);
   }
   fra.me.REG[3] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
-  /* ./syntax//flow.nit:227 */
+  /* syntax/flow.nit:227 */
   REGB1 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_alts", LOCATE_syntax___flow, 227);
   }
   fra.me.REG[4] = ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0]);
-  /* ./../lib/standard//collection//array.nit:232 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB1 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:233 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-  /* ./../lib/standard//collection//array.nit:234 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[4]);
-  /* ./../lib/standard//collection//array.nit:235 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:23 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
     REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -884,26 +932,26 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:215 */
+    /* ../lib/standard/kernel.nit:235 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./../lib/standard//collection//array.nit:236 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:652 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[6] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB1)];
-      /* ./syntax//flow.nit:228 */
+      /* syntax/flow.nit:228 */
       fra.me.REG[6] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[1]);
-      /* ./syntax//flow.nit:229 */
+      /* syntax/flow.nit:229 */
       REGB2 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
         REGB3 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], NIT_NULL);
@@ -911,17 +959,17 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
         }
       }
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//flow.nit:230 */
+        /* syntax/flow.nit:230 */
         fra.me.REG[7] = NIT_NULL;
         goto label1;
       }
-      /* ./syntax//flow.nit:232 */
+      /* syntax/flow.nit:232 */
       REGB2 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[6],fra.me.REG[3]));
       if (UNTAG_Bool(REGB2)) {
       } else {
         REGB3 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
@@ -930,25 +978,25 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
       }
       REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//flow.nit:233 */
+        /* syntax/flow.nit:233 */
         fra.me.REG[3] = NIT_NULL;
       }
-      /* ./syntax//flow.nit:235 */
+      /* syntax/flow.nit:235 */
       REGB2 = TAG_Bool((fra.me.REG[6]!=NIT_NULL) && VAL_ISA(fra.me.REG[6], COLOR_metamodel___static_type___MMTypeNone, ID_metamodel___static_type___MMTypeNone)) /*cast MMTypeNone*/;
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//flow.nit:236 */
-        REGB2 = TAG_Bool(true);
+        /* syntax/flow.nit:236 */
+        REGB2 = TAG_Bool(1);
         REGB0 = REGB2;
-        /* ./syntax//flow.nit:237 */
+        /* syntax/flow.nit:237 */
         goto label2;
       }
-      /* ./syntax//flow.nit:239 */
+      /* syntax/flow.nit:239 */
       REGB2 = TAG_Bool((fra.me.REG[6]!=NIT_NULL) && VAL_ISA(fra.me.REG[6], COLOR_metamodel___static_type___MMNullableType, ID_metamodel___static_type___MMNullableType)) /*cast MMNullableType*/;
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//flow.nit:240 */
-        REGB2 = TAG_Bool(true);
+        /* syntax/flow.nit:240 */
+        REGB2 = TAG_Bool(1);
         REGB0 = REGB2;
-        /* ./syntax//flow.nit:241 */
+        /* syntax/flow.nit:241 */
         REGB2 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
           nit_abort("Reciever is null", NULL, LOCATE_syntax___flow, 241);
@@ -956,13 +1004,13 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
         fra.me.REG[8] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[6])(fra.me.REG[6]);
         fra.me.REG[6] = fra.me.REG[8];
       }
-      /* ./syntax//flow.nit:243 */
+      /* syntax/flow.nit:243 */
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -970,7 +1018,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
         }
       }
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(true);
+        REGB2 = TAG_Bool(1);
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
@@ -980,29 +1028,29 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
         REGB2 = REGB3;
       }
       if (UNTAG_Bool(REGB2)) {
-        /* ./syntax//flow.nit:244 */
+        /* syntax/flow.nit:244 */
         fra.me.REG[2] = fra.me.REG[6];
       }
       label2: while(0);
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB2 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:218 */
+      /* ../lib/standard/kernel.nit:238 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ./../lib/standard//collection//array.nit:237 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = REGB2;
     } else {
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label3;
     }
   }
   label3: while(0);
-  /* ./syntax//flow.nit:247 */
+  /* syntax/flow.nit:247 */
   REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      REGB2 = TAG_Bool(false);
+      REGB2 = TAG_Bool(0);
       REGB1 = REGB2;
     } else {
       REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -1011,19 +1059,19 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
   }
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./syntax//flow.nit:248 */
+    /* syntax/flow.nit:248 */
     fra.me.REG[7] = fra.me.REG[3];
     goto label1;
   }
-  /* ./syntax//flow.nit:250 */
+  /* syntax/flow.nit:250 */
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:251 */
+    /* syntax/flow.nit:251 */
     REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -1031,7 +1079,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
       }
     }
     if (UNTAG_Bool(REGB0)) {
-      /* ./syntax//flow.nit:252 */
+      /* syntax/flow.nit:252 */
       REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____visitor(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
@@ -1042,7 +1090,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
       fra.me.REG[7] = fra.me.REG[3];
       goto label1;
     } else {
-      /* ./syntax//flow.nit:254 */
+      /* syntax/flow.nit:254 */
       REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
         nit_abort("Reciever is null", NULL, LOCATE_syntax___flow, 254);
@@ -1051,13 +1099,13 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
       fra.me.REG[2] = fra.me.REG[3];
     }
   }
-  /* ./syntax//flow.nit:257 */
+  /* syntax/flow.nit:257 */
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -1065,7 +1113,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:258 */
+    /* syntax/flow.nit:258 */
     REGB0 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____base(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
@@ -1076,31 +1124,31 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
     fra.me.REG[7] = fra.me.REG[3];
     goto label1;
   } else {
-    /* ./syntax//flow.nit:260 */
+    /* syntax/flow.nit:260 */
     REGB0 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       nit_abort("Uninitialized attribute %s", "_alts", LOCATE_syntax___flow, 260);
     }
     fra.me.REG[3] = ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0]);
-    /* ./../lib/standard//collection//array.nit:232 */
+    /* ../lib/standard/collection/array.nit:269 */
     REGB0 = TAG_Int(0);
-    /* ./../lib/standard//collection//array.nit:233 */
+    /* ../lib/standard/collection/array.nit:270 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:234 */
+    /* ../lib/standard/collection/array.nit:271 */
     fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     while(1) {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -1108,20 +1156,20 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       if (UNTAG_Bool(REGB1)) {
-        /* ./../lib/standard//collection//array.nit:236 */
+        /* ../lib/standard/collection/array.nit:273 */
         REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[4] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB0)];
-        /* ./syntax//flow.nit:261 */
+        /* syntax/flow.nit:261 */
         fra.me.REG[4] = CALL_syntax___flow___FlowContext___stype(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
-        /* ./syntax//flow.nit:262 */
+        /* syntax/flow.nit:262 */
         REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
           nit_abort("Reciever is null", NULL, LOCATE_syntax___flow, 262);
@@ -1129,7 +1177,7 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
         REGB1 = CALL_metamodel___static_type___MMType_____l(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
         REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
         if (UNTAG_Bool(REGB1)) {
-          /* ./syntax//flow.nit:263 */
+          /* syntax/flow.nit:263 */
           REGB1 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____base(fra.me.REG[0])!=NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
           } else {
@@ -1140,26 +1188,27 @@ val_t syntax___flow___MergeFlowContext___merge_stype(val_t p0, val_t p1){
           fra.me.REG[7] = fra.me.REG[4];
           goto label1;
         }
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB1 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB0 = REGB1;
       } else {
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         goto label4;
       }
     }
     label4: while(0);
   }
-  /* ./syntax//flow.nit:267 */
+  /* syntax/flow.nit:267 */
   fra.me.REG[7] = fra.me.REG[2];
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[7];
 }
+static const char LOCATE_syntax___flow___MergeFlowContext___is_set[] = "flow::MergeFlowContext::(flow::FlowContext::is_set)";
 val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -1173,6 +1222,7 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
   fra.me.meth = LOCATE_syntax___flow___MergeFlowContext___is_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1180,7 +1230,7 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./syntax//flow.nit:272 */
+  /* syntax/flow.nit:272 */
   REGB0 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1189,35 +1239,35 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
   fra.me.REG[2] = ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./syntax//flow.nit:273 */
-    REGB0 = TAG_Bool(true);
+    /* syntax/flow.nit:273 */
+    REGB0 = TAG_Bool(1);
     goto label1;
   } else {
-    /* ./syntax//flow.nit:275 */
+    /* syntax/flow.nit:275 */
     REGB1 = TAG_Bool(ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
       nit_abort("Uninitialized attribute %s", "_alts", LOCATE_syntax___flow, 275);
     }
     fra.me.REG[2] = ATTR_syntax___flow___MergeFlowContext____alts(fra.me.REG[0]);
-    /* ./../lib/standard//collection//array.nit:232 */
+    /* ../lib/standard/collection/array.nit:269 */
     REGB1 = TAG_Int(0);
-    /* ./../lib/standard//collection//array.nit:233 */
+    /* ../lib/standard/collection/array.nit:270 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 233);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
     }
     REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-    /* ./../lib/standard//collection//array.nit:234 */
+    /* ../lib/standard/collection/array.nit:271 */
     fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
-    /* ./../lib/standard//collection//array.nit:235 */
+    /* ../lib/standard/collection/array.nit:272 */
     while(1) {
-      /* ./../lib/standard//collection//array.nit:23 */
+      /* ../lib/standard/collection/array.nit:24 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 23);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
       REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -1225,39 +1275,39 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:215 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-      /* ./../lib/standard//collection//array.nit:235 */
+      /* ../lib/standard/collection/array.nit:272 */
       if (UNTAG_Bool(REGB2)) {
-        /* ./../lib/standard//collection//array.nit:236 */
+        /* ../lib/standard/collection/array.nit:273 */
         REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 236);
+          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
         }
-        /* ./../lib/standard//collection//array.nit:652 */
+        /* ../lib/standard/collection/array.nit:724 */
         fra.me.REG[4] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB1)];
-        /* ./syntax//flow.nit:276 */
+        /* syntax/flow.nit:276 */
         REGB2 = CALL_syntax___flow___FlowContext___is_set(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
         REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
         if (UNTAG_Bool(REGB2)) {
-          /* ./syntax//flow.nit:277 */
-          REGB2 = TAG_Bool(false);
+          /* syntax/flow.nit:277 */
+          REGB2 = TAG_Bool(0);
           REGB0 = REGB2;
           goto label1;
         }
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB2 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
+        /* ../lib/standard/kernel.nit:238 */
         REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-        /* ./../lib/standard//collection//array.nit:237 */
+        /* ../lib/standard/collection/array.nit:274 */
         REGB1 = REGB2;
       } else {
-        /* ./../lib/standard//collection//array.nit:235 */
+        /* ../lib/standard/collection/array.nit:272 */
         goto label2;
       }
     }
     label2: while(0);
-    /* ./syntax//flow.nit:280 */
+    /* syntax/flow.nit:280 */
     REGB1 = TAG_Bool(ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
@@ -1265,8 +1315,8 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
     }
     fra.me.REG[0] = ATTR_syntax___flow___FlowContext____set_variables(fra.me.REG[0]);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    /* ./syntax//flow.nit:281 */
-    REGB1 = TAG_Bool(true);
+    /* syntax/flow.nit:281 */
+    REGB1 = TAG_Bool(1);
     REGB0 = REGB1;
     goto label1;
   }
@@ -1274,6 +1324,7 @@ val_t syntax___flow___MergeFlowContext___is_set(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___Variable___must_be_set[] = "flow::Variable::must_be_set";
 val_t syntax___flow___Variable___must_be_set(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1284,15 +1335,17 @@ val_t syntax___flow___Variable___must_be_set(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___Variable___must_be_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:289 */
-  REGB0 = TAG_Bool(false);
+  /* syntax/flow.nit:289 */
+  REGB0 = TAG_Bool(0);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_syntax___flow___VarVariable___must_be_set[] = "flow::VarVariable::(flow::Variable::must_be_set)";
 val_t syntax___flow___VarVariable___must_be_set(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1303,10 +1356,11 @@ val_t syntax___flow___VarVariable___must_be_set(val_t p0){
   fra.me.meth = LOCATE_syntax___flow___VarVariable___must_be_set;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./syntax//flow.nit:293 */
-  REGB0 = TAG_Bool(true);
+  /* syntax/flow.nit:293 */
+  REGB0 = TAG_Bool(1);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;