c_src: update to have intern args

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

diff --git a/c_src/standard___collection___hash_collection._sep.c b/c_src/standard___collection___hash_collection._sep.c
index 739fe9f..2a53901 100644 (file)
--- a/c_src/standard___collection___hash_collection._sep.c
+++ b/c_src/standard___collection___hash_collection._sep.c
@@ -1,27 +1,6 @@
 /* This C file is generated by NIT to compile module standard___collection___hash_collection. */
 #include "standard___collection___hash_collection._sep.h"
-val_t standard___collection___hash_collection___HashCollection___length(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 25;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___length;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ./../lib/standard//collection//hash_collection.nit:25 */
-  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 25);
-  }
-  REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
+static const char LOCATE_standard___collection___hash_collection___HashCollection___first_item[] = "hash_collection::HashCollection::first_item";
 val_t standard___collection___hash_collection___HashCollection___first_item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
@@ -31,17 +10,20 @@ val_t standard___collection___hash_collection___HashCollection___first_item(val_
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___first_item;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:27 */
+  /* ../lib/standard/collection/hash_collection.nit:27 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___index_at[] = "hash_collection::HashCollection::index_at";
 val_t standard___collection___hash_collection___HashCollection___index_at(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t REGB1;
+  val_t REGB2;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
@@ -49,11 +31,12 @@ val_t standard___collection___hash_collection___HashCollection___index_at(val_t
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___index_at;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:39 */
+  /* ../lib/standard/collection/hash_collection.nit:39 */
   REGB0 = CALL_standard___hash___Object___hash(fra.me.REG[1])(fra.me.REG[1]);
   REGB1 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
@@ -61,25 +44,31 @@ val_t standard___collection___hash_collection___HashCollection___index_at(val_t
     nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 39);
   }
   REGB1 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
-  /* ./../lib/standard//kernel.nit:223 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)%UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:40 */
+  /* ../lib/standard/collection/hash_collection.nit:40 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//kernel.nit:215 */
+  REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB2)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:235 */
   REGB0 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB0));
-  /* ./../lib/standard//collection//hash_collection.nit:40 */
+  /* ../lib/standard/collection/hash_collection.nit:40 */
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/standard//kernel.nit:219 */
+    /* ../lib/standard/kernel.nit:239 */
     REGB0 = TAG_Int(-UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//hash_collection.nit:40 */
+    /* ../lib/standard/collection/hash_collection.nit:40 */
     REGB1 = REGB0;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:41 */
+  /* ../lib/standard/collection/hash_collection.nit:41 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___node_at[] = "hash_collection::HashCollection::node_at";
 val_t standard___collection___hash_collection___HashCollection___node_at(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -90,33 +79,35 @@ val_t standard___collection___hash_collection___HashCollection___node_at(val_t p
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___node_at;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:48 */
+  /* ../lib/standard/collection/hash_collection.nit:48 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]);
   REGB0 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[1],fra.me.REG[2]));
   if (UNTAG_Bool(REGB0)) {
     fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____last_accessed_node(fra.me.REG[0]);
     goto label1;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:50 */
+  /* ../lib/standard/collection/hash_collection.nit:50 */
   REGB0 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   fra.me.REG[3] = CALL_standard___collection___hash_collection___HashCollection___node_at_idx(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:51 */
+  /* ../lib/standard/collection/hash_collection.nit:51 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:52 */
+  /* ../lib/standard/collection/hash_collection.nit:52 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_node(fra.me.REG[0]) = fra.me.REG[3];
-  /* ./../lib/standard//collection//hash_collection.nit:53 */
+  /* ../lib/standard/collection/hash_collection.nit:53 */
   fra.me.REG[2] = fra.me.REG[3];
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[2];
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___node_at_idx[] = "hash_collection::HashCollection::node_at_idx";
 val_t standard___collection___hash_collection___HashCollection___node_at_idx(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -129,28 +120,29 @@ val_t standard___collection___hash_collection___HashCollection___node_at_idx(val
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___node_at_idx;
   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;
   REGB0 = p1;
   fra.me.REG[1] = p2;
-  /* ./../lib/standard//collection//hash_collection.nit:59 */
+  /* ../lib/standard/collection/hash_collection.nit:59 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
     nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 59);
   }
-  /* ./../lib/standard//collection//array.nit:654 */
+  /* ../lib/standard/collection/array.nit:724 */
   fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-  /* ./../lib/standard//collection//hash_collection.nit:60 */
+  /* ../lib/standard/collection/hash_collection.nit:60 */
   while(1) {
     REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -159,17 +151,17 @@ val_t standard___collection___hash_collection___HashCollection___node_at_idx(val
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:61 */
+      /* ../lib/standard/collection/hash_collection.nit:61 */
       REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
         nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 61);
       }
       fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
-      /* ./../lib/standard//collection//hash_collection.nit:62 */
+      /* ../lib/standard/collection/hash_collection.nit:62 */
       REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[1]));
       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[1]));
         if (UNTAG_Bool(REGB1)) {
@@ -180,24 +172,25 @@ val_t standard___collection___hash_collection___HashCollection___node_at_idx(val
         REGB0 = REGB1;
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./../lib/standard//collection//hash_collection.nit:63 */
+        /* ../lib/standard/collection/hash_collection.nit:63 */
         goto label1;
       }
-      /* ./../lib/standard//collection//hash_collection.nit:65 */
+      /* ../lib/standard/collection/hash_collection.nit:65 */
       fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_in_bucklet(fra.me.REG[0]);
       fra.me.REG[0] = fra.me.REG[2];
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:60 */
+      /* ../lib/standard/collection/hash_collection.nit:60 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:67 */
+  /* ../lib/standard/collection/hash_collection.nit:67 */
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___store[] = "hash_collection::HashCollection::store";
 void standard___collection___hash_collection___HashCollection___store(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -210,6 +203,7 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___store;
   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;
@@ -217,14 +211,14 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
   fra.me.REG[0] = p0;
   REGB0 = p1;
   fra.me.REG[1] = p2;
-  /* ./../lib/standard//collection//hash_collection.nit:74 */
+  /* ../lib/standard/collection/hash_collection.nit:74 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[2]==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[2])(fra.me.REG[2], NIT_NULL);
@@ -232,10 +226,10 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
     }
   }
   if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:75 */
+    /* ../lib/standard/collection/hash_collection.nit:75 */
     ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]) = fra.me.REG[1];
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:77 */
+    /* ../lib/standard/collection/hash_collection.nit:77 */
     fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____last_item(fra.me.REG[0]);
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
@@ -243,38 +237,38 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
     }
     ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[2]) = fra.me.REG[1];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:79 */
+  /* ../lib/standard/collection/hash_collection.nit:79 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____last_item(fra.me.REG[0]);
   ATTR_standard___collection___hash_collection___HashNode____prev_item(fra.me.REG[1]) = fra.me.REG[2];
-  /* ./../lib/standard//collection//hash_collection.nit:80 */
+  /* ../lib/standard/collection/hash_collection.nit:80 */
   ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[1]) = NIT_NULL;
-  /* ./../lib/standard//collection//hash_collection.nit:81 */
+  /* ../lib/standard/collection/hash_collection.nit:81 */
   ATTR_standard___collection___hash_collection___HashCollection____last_item(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:84 */
+  /* ../lib/standard/collection/hash_collection.nit:84 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
     nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 84);
   }
-  /* ./../lib/standard//collection//array.nit:654 */
+  /* ../lib/standard/collection/array.nit:724 */
   fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-  /* ./../lib/standard//collection//hash_collection.nit:85 */
+  /* ../lib/standard/collection/hash_collection.nit:85 */
   fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
     nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 85);
   }
-  /* ./../lib/standard//collection//array.nit:655 */
+  /* ../lib/standard/collection/array.nit:725 */
   ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB0)]=fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:86 */
+  /* ../lib/standard/collection/hash_collection.nit:86 */
   ATTR_standard___collection___hash_collection___HashNode____next_in_bucklet(fra.me.REG[1]) = fra.me.REG[2];
-  /* ./../lib/standard//collection//hash_collection.nit:87 */
+  /* ../lib/standard/collection/hash_collection.nit:87 */
   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);
@@ -285,7 +279,7 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
   if (UNTAG_Bool(REGB0)) {
     ATTR_standard___collection___hash_collection___HashNode____prev_in_bucklet(fra.me.REG[2]) = fra.me.REG[1];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:89 */
+  /* ../lib/standard/collection/hash_collection.nit:89 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -293,56 +287,62 @@ void standard___collection___hash_collection___HashCollection___store(val_t p0,
   }
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[1]);
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./../lib/standard//collection//hash_collection.nit:90 */
+  /* ../lib/standard/collection/hash_collection.nit:90 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_node(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:93 */
+  /* ../lib/standard/collection/hash_collection.nit:93 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 93);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:94 */
+  /* ../lib/standard/collection/hash_collection.nit:94 */
   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//hash_collection.nit:94 */
+  /* ../lib/standard/collection/hash_collection.nit:94 */
   ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]) = REGB1;
-  /* ./../lib/standard//collection//hash_collection.nit:95 */
+  /* ../lib/standard/collection/hash_collection.nit:95 */
   REGB1 = TAG_Int(5);
-  /* ./../lib/standard//kernel.nit:218 */
+  /* ../lib/standard/kernel.nit:238 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:95 */
+  /* ../lib/standard/collection/hash_collection.nit:95 */
   REGB2 = TAG_Int(3);
-  /* ./../lib/standard//kernel.nit:221 */
+  /* ../lib/standard/kernel.nit:241 */
   REGB2 = TAG_Int(UNTAG_Int(REGB1)*UNTAG_Int(REGB2));
-  /* ./../lib/standard//collection//hash_collection.nit:95 */
+  /* ../lib/standard/collection/hash_collection.nit:95 */
   REGB1 = TAG_Int(2);
-  /* ./../lib/standard//kernel.nit:222 */
+  /* ../lib/standard/kernel.nit:242 */
   REGB1 = TAG_Int(UNTAG_Int(REGB2)/UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:95 */
+  /* ../lib/standard/collection/hash_collection.nit:95 */
   REGB0 = REGB1;
-  /* ./../lib/standard//collection//hash_collection.nit:96 */
+  /* ../lib/standard/collection/hash_collection.nit:96 */
   REGB1 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 96);
   }
   REGB1 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
-  /* ./../lib/standard//kernel.nit:216 */
+  REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB2)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:236 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:96 */
+  /* ../lib/standard/collection/hash_collection.nit:96 */
   if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:97 */
+    /* ../lib/standard/collection/hash_collection.nit:97 */
     REGB1 = TAG_Int(2);
-    /* ./../lib/standard//kernel.nit:221 */
+    /* ../lib/standard/kernel.nit:241 */
     REGB1 = TAG_Int(UNTAG_Int(REGB0)*UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//hash_collection.nit:97 */
+    /* ../lib/standard/collection/hash_collection.nit:97 */
     CALL_standard___collection___hash_collection___HashCollection___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB1);
   }
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___remove_node[] = "hash_collection::HashCollection::remove_node";
 void standard___collection___hash_collection___HashCollection___remove_node(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
   val_t REGB0;
@@ -355,6 +355,7 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___remove_node;
   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;
@@ -362,17 +363,17 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:104 */
+  /* ../lib/standard/collection/hash_collection.nit:104 */
   REGB0 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:105 */
+  /* ../lib/standard/collection/hash_collection.nit:105 */
   fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___node_at_idx(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:106 */
+  /* ../lib/standard/collection/hash_collection.nit:106 */
   REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[1]==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[1])(fra.me.REG[1], NIT_NULL);
@@ -382,17 +383,17 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:109 */
+  /* ../lib/standard/collection/hash_collection.nit:109 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____prev_item(fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:110 */
+  /* ../lib/standard/collection/hash_collection.nit:110 */
   fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:111 */
+  /* ../lib/standard/collection/hash_collection.nit:111 */
   REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[2]==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[2])(fra.me.REG[2], NIT_NULL);
@@ -401,19 +402,19 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   }
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:112 */
+    /* ../lib/standard/collection/hash_collection.nit:112 */
     ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[2]) = fra.me.REG[3];
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:114 */
+    /* ../lib/standard/collection/hash_collection.nit:114 */
     ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]) = fra.me.REG[3];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:116 */
+  /* ../lib/standard/collection/hash_collection.nit:116 */
   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);
@@ -422,32 +423,32 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   }
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:117 */
+    /* ../lib/standard/collection/hash_collection.nit:117 */
     ATTR_standard___collection___hash_collection___HashNode____prev_item(fra.me.REG[3]) = fra.me.REG[2];
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:119 */
+    /* ../lib/standard/collection/hash_collection.nit:119 */
     ATTR_standard___collection___hash_collection___HashCollection____last_item(fra.me.REG[0]) = fra.me.REG[2];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:123 */
+  /* ../lib/standard/collection/hash_collection.nit:123 */
   REGB1 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
   REGB2 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:220 */
+  /* ../lib/standard/kernel.nit:240 */
   REGB2 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB2));
-  /* ./../lib/standard//collection//hash_collection.nit:123 */
+  /* ../lib/standard/collection/hash_collection.nit:123 */
   ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]) = REGB2;
-  /* ./../lib/standard//collection//hash_collection.nit:124 */
+  /* ../lib/standard/collection/hash_collection.nit:124 */
   fra.me.REG[4] = ATTR_standard___collection___hash_collection___HashNode____prev_in_bucklet(fra.me.REG[1]);
   fra.me.REG[2] = fra.me.REG[4];
-  /* ./../lib/standard//collection//hash_collection.nit:125 */
+  /* ../lib/standard/collection/hash_collection.nit:125 */
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashNode____next_in_bucklet(fra.me.REG[1]);
   fra.me.REG[3] = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:126 */
+  /* ../lib/standard/collection/hash_collection.nit:126 */
   REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB2 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
@@ -456,25 +457,25 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   }
   REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
   if (UNTAG_Bool(REGB2)) {
-    /* ./../lib/standard//collection//hash_collection.nit:127 */
+    /* ../lib/standard/collection/hash_collection.nit:127 */
     ATTR_standard___collection___hash_collection___HashNode____next_in_bucklet(fra.me.REG[2]) = fra.me.REG[3];
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:129 */
+    /* ../lib/standard/collection/hash_collection.nit:129 */
     fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]);
     REGB2 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
       nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 129);
     }
-    /* ./../lib/standard//collection//array.nit:655 */
+    /* ../lib/standard/collection/array.nit:725 */
     ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB0)]=fra.me.REG[3];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:131 */
+  /* ../lib/standard/collection/hash_collection.nit:131 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      REGB2 = TAG_Bool(false);
+      REGB2 = TAG_Bool(0);
       REGB0 = REGB2;
     } else {
       REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
@@ -483,19 +484,21 @@ void standard___collection___hash_collection___HashCollection___remove_node(val_
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/standard//collection//hash_collection.nit:132 */
+    /* ../lib/standard/collection/hash_collection.nit:132 */
     ATTR_standard___collection___hash_collection___HashNode____prev_in_bucklet(fra.me.REG[3]) = fra.me.REG[2];
   }
-  /* ./../lib/standard//collection//hash_collection.nit:135 */
+  /* ../lib/standard/collection/hash_collection.nit:135 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]) = NIT_NULL;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___raz[] = "hash_collection::HashCollection::raz";
 void standard___collection___hash_collection___HashCollection___raz(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t REGB1;
+  val_t REGB2;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
@@ -503,58 +506,65 @@ void standard___collection___hash_collection___HashCollection___raz(val_t p0){
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___raz;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:140 */
+  /* ../lib/standard/collection/hash_collection.nit:141 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 140);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 141);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
   REGB1 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:220 */
+  /* ../lib/standard/kernel.nit:240 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:141 */
+  /* ../lib/standard/collection/hash_collection.nit:142 */
   while(1) {
     REGB0 = TAG_Int(0);
-    /* ./../lib/standard//kernel.nit:216 */
+    REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
+    if (UNTAG_Bool(REGB2)) {
+    } else {
+      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+    }
+    /* ../lib/standard/kernel.nit:236 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB1)>=UNTAG_Int(REGB0));
-    /* ./../lib/standard//collection//hash_collection.nit:141 */
+    /* ../lib/standard/collection/hash_collection.nit:142 */
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:142 */
+      /* ../lib/standard/collection/hash_collection.nit:143 */
       fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]);
       REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 142);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 143);
       }
-      /* ./../lib/standard//collection//array.nit:655 */
+      /* ../lib/standard/collection/array.nit:725 */
       ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB1)]=NIT_NULL;
-      /* ./../lib/standard//collection//hash_collection.nit:143 */
+      /* ../lib/standard/collection/hash_collection.nit:144 */
       REGB0 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:220 */
+      /* ../lib/standard/kernel.nit:240 */
       REGB0 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB0));
-      /* ./../lib/standard//collection//hash_collection.nit:143 */
+      /* ../lib/standard/collection/hash_collection.nit:144 */
       REGB1 = REGB0;
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:141 */
+      /* ../lib/standard/collection/hash_collection.nit:142 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:145 */
+  /* ../lib/standard/collection/hash_collection.nit:146 */
   REGB1 = TAG_Int(0);
   ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]) = REGB1;
-  /* ./../lib/standard//collection//hash_collection.nit:146 */
+  /* ../lib/standard/collection/hash_collection.nit:147 */
   ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]) = NIT_NULL;
-  /* ./../lib/standard//collection//hash_collection.nit:147 */
+  /* ../lib/standard/collection/hash_collection.nit:148 */
   ATTR_standard___collection___hash_collection___HashCollection____last_item(fra.me.REG[0]) = NIT_NULL;
-  /* ./../lib/standard//collection//hash_collection.nit:148 */
+  /* ../lib/standard/collection/hash_collection.nit:149 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]) = NIT_NULL;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___enlarge[] = "hash_collection::HashCollection::enlarge";
 void standard___collection___hash_collection___HashCollection___enlarge(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -564,118 +574,139 @@ void standard___collection___hash_collection___HashCollection___enlarge(val_t p0
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 151;
+  fra.me.line = 152;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___enlarge;
   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;
   REGB0 = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:153 */
+  /* ../lib/standard/collection/hash_collection.nit:155 */
   REGB1 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 153);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 155);
   }
   REGB1 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:155 */
+  /* ../lib/standard/collection/hash_collection.nit:157 */
   REGB2 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 155);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 157);
   }
   REGB2 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
   REGB3 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:218 */
+  /* ../lib/standard/kernel.nit:238 */
   REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-  /* ./../lib/standard//kernel.nit:215 */
+  REGB2 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB2)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:235 */
   REGB3 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB3));
-  /* ./../lib/standard//collection//hash_collection.nit:155 */
+  /* ../lib/standard/collection/hash_collection.nit:157 */
   if (UNTAG_Bool(REGB3)) {
     REGB3 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 155);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 157);
     }
     REGB3 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
     REGB2 = TAG_Int(1);
-    /* ./../lib/standard//kernel.nit:218 */
+    /* ../lib/standard/kernel.nit:238 */
     REGB2 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB2));
-    /* ./../lib/standard//collection//hash_collection.nit:155 */
+    /* ../lib/standard/collection/hash_collection.nit:157 */
     REGB0 = REGB2;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:156 */
+  /* ../lib/standard/collection/hash_collection.nit:158 */
   REGB2 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 156);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 158);
   }
   REGB2 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
-  /* ./../lib/standard//kernel.nit:214 */
+  REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB3)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:234 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB0)<=UNTAG_Int(REGB2));
-  /* ./../lib/standard//collection//hash_collection.nit:156 */
+  /* ../lib/standard/collection/hash_collection.nit:158 */
   if (UNTAG_Bool(REGB2)) {
     goto label1;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:157 */
+  /* ../lib/standard/collection/hash_collection.nit:159 */
   ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]) = REGB0;
-  /* ./../lib/standard//collection//hash_collection.nit:158 */
+  /* ../lib/standard/collection/hash_collection.nit:160 */
   ATTR_standard___collection___hash_collection___HashCollection____last_accessed_key(fra.me.REG[0]) = NIT_NULL;
-  /* ./../lib/standard//collection//array.nit:648 */
+  /* ../lib/standard/collection/array.nit:718 */
   fra.me.REG[1] = NEW_NativeArray(UNTAG_Int(REGB0), sizeof(val_t));
-  /* ./../lib/standard//collection//hash_collection.nit:162 */
+  /* ../lib/standard/collection/hash_collection.nit:164 */
   ATTR_standard___collection___hash_collection___HashCollection____array(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:165 */
+  /* ../lib/standard/collection/hash_collection.nit:167 */
   REGB2 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:220 */
+  /* ../lib/standard/kernel.nit:240 */
   REGB2 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB2));
-  /* ./../lib/standard//collection//hash_collection.nit:166 */
+  /* ../lib/standard/collection/hash_collection.nit:168 */
   while(1) {
     REGB0 = TAG_Int(0);
-    /* ./../lib/standard//kernel.nit:216 */
+    REGB3 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
+    if (UNTAG_Bool(REGB3)) {
+    } else {
+      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+    }
+    /* ../lib/standard/kernel.nit:236 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB0));
-    /* ./../lib/standard//collection//hash_collection.nit:166 */
+    /* ../lib/standard/collection/hash_collection.nit:168 */
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//array.nit:655 */
+      /* ../lib/standard/collection/array.nit:725 */
       ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB2)]=NIT_NULL;
-      /* ./../lib/standard//collection//hash_collection.nit:168 */
+      /* ../lib/standard/collection/hash_collection.nit:170 */
       REGB0 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:220 */
+      /* ../lib/standard/kernel.nit:240 */
       REGB0 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB0));
-      /* ./../lib/standard//collection//hash_collection.nit:168 */
+      /* ../lib/standard/collection/hash_collection.nit:170 */
       REGB2 = REGB0;
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:166 */
+      /* ../lib/standard/collection/hash_collection.nit:168 */
       goto label2;
     }
   }
   label2: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:171 */
+  /* ../lib/standard/collection/hash_collection.nit:173 */
   REGB2 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 171);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___hash_collection, 173);
   }
   REGB2 = ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[0]);
-  /* ./../lib/standard//kernel.nit:214 */
+  REGB0 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:234 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB2)<=UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:171 */
+  /* ../lib/standard/collection/hash_collection.nit:173 */
   if (UNTAG_Bool(REGB1)) {
     goto label1;
   }
-  /* ./../lib/standard//collection//hash_collection.nit:174 */
+  /* ../lib/standard/collection/hash_collection.nit:176 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:175 */
+  /* ../lib/standard/collection/hash_collection.nit:177 */
   while(1) {
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
       REGB2 = TAG_Bool(fra.me.REG[2]==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[2])(fra.me.REG[2], NIT_NULL);
@@ -684,27 +715,27 @@ void standard___collection___hash_collection___HashCollection___enlarge(val_t p0
     }
     REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
     if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/standard//collection//hash_collection.nit:176 */
+      /* ../lib/standard/collection/hash_collection.nit:178 */
       REGB1 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 176);
+        nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 178);
       }
       fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2]);
       REGB1 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:654 */
+      /* ../lib/standard/collection/array.nit:724 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB1)];
-      /* ./../lib/standard//collection//array.nit:655 */
+      /* ../lib/standard/collection/array.nit:725 */
       ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB1)]=fra.me.REG[2];
-      /* ./../lib/standard//collection//hash_collection.nit:180 */
+      /* ../lib/standard/collection/hash_collection.nit:182 */
       ATTR_standard___collection___hash_collection___HashNode____next_in_bucklet(fra.me.REG[2]) = fra.me.REG[3];
-      /* ./../lib/standard//collection//hash_collection.nit:181 */
+      /* ../lib/standard/collection/hash_collection.nit:183 */
       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);
@@ -715,11 +746,11 @@ void standard___collection___hash_collection___HashCollection___enlarge(val_t p0
       if (UNTAG_Bool(REGB1)) {
         ATTR_standard___collection___hash_collection___HashNode____prev_in_bucklet(fra.me.REG[3]) = fra.me.REG[2];
       }
-      /* ./../lib/standard//collection//hash_collection.nit:182 */
+      /* ../lib/standard/collection/hash_collection.nit:184 */
       fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[2]);
       fra.me.REG[2] = fra.me.REG[3];
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:175 */
+      /* ../lib/standard/collection/hash_collection.nit:177 */
       goto label3;
     }
   }
@@ -728,6 +759,7 @@ void standard___collection___hash_collection___HashCollection___enlarge(val_t p0
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashCollection___init[] = "hash_collection::HashCollection::init";
 void standard___collection___hash_collection___HashCollection___init(val_t p0, int* init_table){
   int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashCollection].i;
   struct {struct stack_frame_t me;} fra;
@@ -739,78 +771,88 @@ void standard___collection___hash_collection___HashCollection___init(val_t p0, i
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashCollection___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
+  fra.me.nitni_local_ref_head = NULL;
   stack_frame_head = fra.me.prev;
   init_table[itpos0] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashNode___next_item[] = "hash_collection::HashNode::next_item";
 val_t standard___collection___hash_collection___HashNode___next_item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 190;
+  fra.me.line = 192;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashNode___next_item;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:190 */
+  /* ../lib/standard/collection/hash_collection.nit:192 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashNode___next_item__eq[] = "hash_collection::HashNode::next_item=";
 void standard___collection___hash_collection___HashNode___next_item__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 190;
+  fra.me.line = 192;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashNode___next_item__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:190 */
+  /* ../lib/standard/collection/hash_collection.nit:192 */
   ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashNode___prev_item[] = "hash_collection::HashNode::prev_item";
 val_t standard___collection___hash_collection___HashNode___prev_item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 191;
+  fra.me.line = 193;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashNode___prev_item;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:191 */
+  /* ../lib/standard/collection/hash_collection.nit:193 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____prev_item(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashNode___prev_item__eq[] = "hash_collection::HashNode::prev_item=";
 void standard___collection___hash_collection___HashNode___prev_item__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 191;
+  fra.me.line = 193;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashNode___prev_item__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:191 */
+  /* ../lib/standard/collection/hash_collection.nit:193 */
   ATTR_standard___collection___hash_collection___HashNode____prev_item(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashNode___init[] = "hash_collection::HashNode::init";
 void standard___collection___hash_collection___HashNode___init(val_t p0, val_t p1, int* init_table){
   int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashNode].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
@@ -818,20 +860,22 @@ void standard___collection___hash_collection___HashNode___init(val_t p0, val_t p
   if (init_table[itpos1]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 194;
+  fra.me.line = 196;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashNode___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:196 */
+  /* ../lib/standard/collection/hash_collection.nit:198 */
   ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   init_table[itpos1] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMap_____bra[] = "hash_collection::HashMap::(abstract_collection::MapRead::[])";
 val_t standard___collection___hash_collection___HashMap_____bra(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -839,23 +883,24 @@ val_t standard___collection___hash_collection___HashMap_____bra(val_t p0, val_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 204;
+  fra.me.line = 208;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap_____bra;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:206 */
+  /* ../lib/standard/collection/hash_collection.nit:210 */
   fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___node_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:207 */
+  /* ../lib/standard/collection/hash_collection.nit:211 */
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -863,10 +908,10 @@ val_t standard___collection___hash_collection___HashMap_____bra(val_t p0, val_t
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/standard//collection//hash_collection.nit:208 */
-    nit_abort("Aborted", NULL, LOCATE_standard___collection___hash_collection, 208);
+    /* ../lib/standard/collection/hash_collection.nit:212 */
+    nit_abort("Aborted", NULL, LOCATE_standard___collection___hash_collection, 212);
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:210 */
+    /* ../lib/standard/collection/hash_collection.nit:214 */
     fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[1]);
     goto label1;
   }
@@ -874,87 +919,57 @@ val_t standard___collection___hash_collection___HashMap_____bra(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
-val_t standard___collection___hash_collection___HashMap___has_key(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 214;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___has_key;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:214 */
-  fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___node_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
+static const char LOCATE_standard___collection___hash_collection___HashMap___iterator[] = "hash_collection::HashMap::(abstract_collection::MapRead::iterator)";
 val_t standard___collection___hash_collection___HashMap___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 216;
+  fra.me.line = 218;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___iterator;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:216 */
+  /* ../lib/standard/collection/hash_collection.nit:218 */
   fra.me.REG[0] = NEW_HashMapIterator_standard___collection___hash_collection___HashMapIterator___init(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashMap___iterate[] = "hash_collection::HashMap::(abstract_collection::MapRead::iterate)";
 void standard___collection___hash_collection___HashMap___iterate(val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t REGB1;
   fun_t CREG[1];
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 218;
+  fra.me.line = 220;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___iterate;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
+  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.closure_ctx = closctx_param;
   fra.me.closure_funs = CREG;
   fra.me.REG[0] = p0;
   CREG[0] = clos_fun0;
-  /* ./../lib/standard//collection//hash_collection.nit:221 */
+  /* ../lib/standard/collection/hash_collection.nit:223 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:222 */
+  /* ../lib/standard/collection/hash_collection.nit:224 */
   while(1) {
     REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
       REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -963,17 +978,23 @@ void standard___collection___hash_collection___HashMap___iterate(val_t p0, struc
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:223 */
-      fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
-      ((void (*)(struct stack_frame_t *, val_t))(CREG[0]))(closctx_param, fra.me.REG[1]);
+      /* ../lib/standard/collection/hash_collection.nit:225 */
+      REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
+      if (UNTAG_Bool(REGB0)) {
+      } else {
+        nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 225);
+      }
+      fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
+      ((void (*)(struct stack_frame_t *, val_t, val_t))(CREG[0]))(closctx_param, fra.me.REG[1], fra.me.REG[2]);
       if (closctx_param->has_broke) {
         goto label1;
       }
-      /* ./../lib/standard//collection//hash_collection.nit:224 */
-      fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
-      fra.me.REG[0] = fra.me.REG[1];
+      /* ../lib/standard/collection/hash_collection.nit:226 */
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
+      fra.me.REG[0] = fra.me.REG[2];
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:222 */
+      /* ../lib/standard/collection/hash_collection.nit:224 */
       goto label2;
     }
   }
@@ -982,46 +1003,33 @@ void standard___collection___hash_collection___HashMap___iterate(val_t p0, struc
   stack_frame_head = fra.me.prev;
   return;
 }
-val_t standard___collection___hash_collection___HashMap___first(val_t p0){
+static const char LOCATE_standard___collection___hash_collection___HashMap___length[] = "hash_collection::HashMap::(abstract_collection::MapRead::length)";
+val_t standard___collection___hash_collection___HashMap___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
-  val_t REGB1;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 228;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___first;
+  fra.me.line = 230;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___length;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:230 */
+  /* ../lib/standard/collection/hash_collection.nit:230 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 230);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
-  REGB1 = TAG_Int(0);
-  /* ./../lib/standard//kernel.nit:217 */
-  REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:230 */
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 230);
-  }
-  /* ./../lib/standard//collection//hash_collection.nit:231 */
-  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 231);
-  }
-  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
+  return REGB0;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMap___is_empty[] = "hash_collection::HashMap::(abstract_collection::MapRead::is_empty)";
 val_t standard___collection___hash_collection___HashMap___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1030,26 +1038,27 @@ val_t standard___collection___hash_collection___HashMap___is_empty(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 234;
+  fra.me.line = 232;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___is_empty;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:234 */
+  /* ../lib/standard/collection/hash_collection.nit:232 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 234);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 232);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./../lib/standard//collection//hash_collection.nit:234 */
+    /* ../lib/standard/collection/hash_collection.nit:232 */
     REGB2 = REGB1;
   }
   goto label1;
@@ -1057,174 +1066,785 @@ val_t standard___collection___hash_collection___HashMap___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
-val_t standard___collection___hash_collection___HashMap___count(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+static const char LOCATE_standard___collection___hash_collection___HashMap_____braeq[] = "hash_collection::HashMap::(abstract_collection::Map::[]=)";
+void standard___collection___hash_collection___HashMap_____braeq(val_t p0, val_t p1, val_t p2){
+  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t REGB2;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 236;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___count;
+  fra.me.line = 234;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap_____braeq;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
+  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;
-  /* ./../lib/standard//collection//hash_collection.nit:238 */
-  REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//hash_collection.nit:239 */
-  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:240 */
-  while(1) {
-    REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      REGB2 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(false);
-        REGB1 = REGB2;
-      } else {
-        REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
-        REGB1 = REGB2;
-      }
-    }
-    REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-    if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/standard//collection//hash_collection.nit:241 */
-      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
-      REGB1 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
-          REGB1 = REGB2;
-        } else {
-          REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-          REGB1 = REGB2;
-        }
-      }
-      if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Int(1);
-        /* ./../lib/standard//kernel.nit:218 */
-        REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ./../lib/standard//collection//hash_collection.nit:241 */
-        REGB0 = REGB1;
-      }
-      /* ./../lib/standard//collection//hash_collection.nit:242 */
-      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
-      fra.me.REG[0] = fra.me.REG[2];
+  fra.me.REG[2] = p2;
+  /* ../lib/standard/collection/hash_collection.nit:236 */
+  REGB0 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  /* ../lib/standard/collection/hash_collection.nit:237 */
+  fra.me.REG[3] = CALL_standard___collection___hash_collection___HashCollection___node_at_idx(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
+  /* ../lib/standard/collection/hash_collection.nit:238 */
+  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(0);
+      REGB1 = REGB2;
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:240 */
-      goto label1;
+      REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
+      REGB1 = REGB2;
     }
   }
-  label1: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:244 */
-  goto label2;
-  label2: while(0);
+  REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
+  if (UNTAG_Bool(REGB1)) {
+    /* ../lib/standard/collection/hash_collection.nit:239 */
+    ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[3]) = fra.me.REG[1];
+    /* ../lib/standard/collection/hash_collection.nit:240 */
+    ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[3]) = fra.me.REG[2];
+  } else {
+    /* ../lib/standard/collection/hash_collection.nit:242 */
+    fra.me.REG[2] = NEW_HashMapNode_standard___collection___hash_collection___HashMapNode___init(fra.me.REG[1], fra.me.REG[2]);
+    CALL_standard___collection___hash_collection___HashCollection___store(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[2]);
+  }
   stack_frame_head = fra.me.prev;
-  return REGB0;
+  return;
 }
-val_t standard___collection___hash_collection___HashMap___has(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+static const char LOCATE_standard___collection___hash_collection___HashMap___clear[] = "hash_collection::HashMap::(abstract_collection::Map::clear)";
+void standard___collection___hash_collection___HashMap___clear(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 246;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___clear;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:246 */
+  CALL_standard___collection___hash_collection___HashCollection___raz(fra.me.REG[0])(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMap___init[] = "hash_collection::HashMap::init";
+void standard___collection___hash_collection___HashMap___init(val_t p0, int* init_table){
+  int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMap].i;
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
-  val_t REGB1;
   val_t tmp;
+  if (init_table[itpos2]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 247;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___has;
+  fra.me.line = 248;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___init;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
+  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[2] = NIT_NULL;
   fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ./../lib/standard//collection//hash_collection.nit:249 */
-  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:250 */
-  while(1) {
-    REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
-        REGB0 = REGB1;
-      } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
-        REGB0 = REGB1;
-      }
-    }
-    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-    if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:251 */
-      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
-      REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
-      if (UNTAG_Bool(REGB0)) {
-      } else {
-        REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-        if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
-          REGB0 = REGB1;
-        } else {
-          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-          REGB0 = REGB1;
-        }
-      }
-      if (UNTAG_Bool(REGB0)) {
-        REGB0 = TAG_Bool(true);
-        goto label1;
-      }
-      /* ./../lib/standard//collection//hash_collection.nit:252 */
-      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
-      fra.me.REG[0] = fra.me.REG[2];
-    } else {
-      /* ./../lib/standard//collection//hash_collection.nit:250 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:254 */
-  REGB1 = TAG_Bool(false);
-  REGB0 = REGB1;
-  goto label1;
-  label1: while(0);
+  /* ../lib/standard/collection/hash_collection.nit:248 */
+  fra.me.REG[1] = fra.me.REG[0];
+  CALL_standard___collection___hash_collection___HashCollection___init(fra.me.REG[0])(fra.me.REG[0], init_table);
+  /* ../lib/standard/collection/hash_collection.nit:250 */
+  REGB0 = TAG_Int(0);
+  ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[1]) = REGB0;
+  /* ../lib/standard/collection/hash_collection.nit:251 */
+  REGB0 = TAG_Int(0);
+  ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[1]) = REGB0;
+  /* ../lib/standard/collection/hash_collection.nit:252 */
+  REGB0 = TAG_Int(0);
+  CALL_standard___collection___hash_collection___HashCollection___enlarge(fra.me.REG[1])(fra.me.REG[1], REGB0);
   stack_frame_head = fra.me.prev;
-  return REGB0;
+  init_table[itpos2] = 1;
+  return;
 }
-val_t standard___collection___hash_collection___HashMap___has_only(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+static const char LOCATE_standard___collection___hash_collection___HashMap___keys[] = "hash_collection::HashMap::(abstract_collection::MapRead::keys)";
+val_t standard___collection___hash_collection___HashMap___keys(val_t p0){
+  struct {struct stack_frame_t me;} fra;
   val_t REGB0;
-  val_t REGB1;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 257;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___has_only;
+  fra.me.line = 255;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___keys;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
+  fra.me.REG_size = 1;
+  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;
-  /* ./../lib/standard//collection//hash_collection.nit:259 */
-  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:260 */
-  while(1) {
-    REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+  /* ../lib/standard/collection/hash_collection.nit:255 */
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashMap_____atkeys(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "@keys", LOCATE_standard___collection___hash_collection, 255);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMap_____atkeys(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMap___keys__eq[] = "hash_collection::HashMap::keys=";
+void standard___collection___hash_collection___HashMap___keys__eq(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 255;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___keys__eq;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* ../lib/standard/collection/hash_collection.nit:255 */
+  ATTR_standard___collection___hash_collection___HashMap_____atkeys(fra.me.REG[0]) = fra.me.REG[1];
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMap___values[] = "hash_collection::HashMap::(abstract_collection::MapRead::values)";
+val_t standard___collection___hash_collection___HashMap___values(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 256;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___values;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:256 */
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashMap_____atvalues(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "@values", LOCATE_standard___collection___hash_collection, 256);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMap_____atvalues(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMap___values__eq[] = "hash_collection::HashMap::values=";
+void standard___collection___hash_collection___HashMap___values__eq(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 256;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___values__eq;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* ../lib/standard/collection/hash_collection.nit:256 */
+  ATTR_standard___collection___hash_collection___HashMap_____atvalues(fra.me.REG[0]) = fra.me.REG[1];
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___map[] = "hash_collection::HashMapKeys::map";
+val_t standard___collection___hash_collection___HashMapKeys___map(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 262;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___map;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:262 */
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashMapKeys_____atmap(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___hash_collection, 262);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapKeys_____atmap(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___map__eq[] = "hash_collection::HashMapKeys::map=";
+void standard___collection___hash_collection___HashMapKeys___map__eq(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 262;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___map__eq;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* ../lib/standard/collection/hash_collection.nit:262 */
+  ATTR_standard___collection___hash_collection___HashMapKeys_____atmap(fra.me.REG[0]) = fra.me.REG[1];
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___count[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::count)";
+val_t standard___collection___hash_collection___HashMapKeys___count(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 265;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___count;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:265 */
+  REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  if (UNTAG_Bool(REGB0)) {
+    REGB0 = TAG_Int(1);
+    goto label1;
+  } else {
+    REGB1 = TAG_Int(0);
+    REGB0 = REGB1;
+    goto label1;
+  }
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___first[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::first)";
+val_t standard___collection___hash_collection___HashMapKeys___first(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 266;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___first;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:266 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 266);
+  }
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 266);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___has[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::has)";
+val_t standard___collection___hash_collection___HashMapKeys___has(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 267;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___has;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:267 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___node_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+      REGB1 = TAG_Bool(0);
+      REGB0 = REGB1;
+    } else {
+      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
+      REGB0 = REGB1;
+    }
+  }
+  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___has_only[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::has_only)";
+val_t standard___collection___hash_collection___HashMapKeys___has_only(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t REGB2;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 268;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___has_only;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:268 */
+  REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  if (UNTAG_Bool(REGB0)) {
+    REGB0 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[0])(fra.me.REG[0]);
+    REGB1 = TAG_Int(1);
+    REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
+    if (UNTAG_Bool(REGB2)) {
+    } else {
+      /* ../lib/standard/kernel.nit:230 */
+      REGB1 = TAG_Bool((REGB0)==(REGB1));
+      /* ../lib/standard/collection/hash_collection.nit:268 */
+      REGB2 = REGB1;
+    }
+  } else {
+    REGB1 = TAG_Bool(0);
+    REGB2 = REGB1;
+  }
+  if (UNTAG_Bool(REGB2)) {
+    REGB2 = TAG_Bool(1);
+  } else {
+    REGB1 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[0])(fra.me.REG[0]);
+    REGB2 = REGB1;
+  }
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB2;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___is_empty[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::is_empty)";
+val_t standard___collection___hash_collection___HashMapKeys___is_empty(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 269;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___is_empty;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:269 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_standard___collection___abstract_collection___MapRead___is_empty(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___length[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::length)";
+val_t standard___collection___hash_collection___HashMapKeys___length(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 270;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___length;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:270 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_standard___collection___abstract_collection___MapRead___length(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___iterator[] = "hash_collection::HashMapKeys::(abstract_collection::Collection::iterator)";
+val_t standard___collection___hash_collection___HashMapKeys___iterator(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 272;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___iterator;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:272 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___iterator(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = NEW_MapKeysIterator_standard___collection___abstract_collection___MapKeysIterator___init(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___clear[] = "hash_collection::HashMapKeys::(abstract_collection::RemovableCollection::clear)";
+void standard___collection___hash_collection___HashMapKeys___clear(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 274;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___clear;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:274 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_standard___collection___abstract_collection___Map___clear(fra.me.REG[0])(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___remove[] = "hash_collection::HashMapKeys::(abstract_collection::RemovableCollection::remove)";
+void standard___collection___hash_collection___HashMapKeys___remove(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 276;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___remove;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:276 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___remove_all[] = "hash_collection::HashMapKeys::(abstract_collection::RemovableCollection::remove_all)";
+void standard___collection___hash_collection___HashMapKeys___remove_all(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 277;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___remove_all;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:277 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapKeys___init[] = "hash_collection::HashMapKeys::init";
+void standard___collection___hash_collection___HashMapKeys___init(val_t p0, val_t p1, int* init_table){
+  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapKeys].i;
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  if (init_table[itpos3]) return;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 0;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapKeys___init;
+  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;
+  ATTR_standard___collection___hash_collection___HashMapKeys_____atmap(fra.me.REG[0]) = fra.me.REG[1];
+  stack_frame_head = fra.me.prev;
+  init_table[itpos3] = 1;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___map[] = "hash_collection::HashMapValues::map";
+val_t standard___collection___hash_collection___HashMapValues___map(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 283;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___map;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:283 */
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashMapValues_____atmap(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___hash_collection, 283);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapValues_____atmap(fra.me.REG[0]);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___map__eq[] = "hash_collection::HashMapValues::map=";
+void standard___collection___hash_collection___HashMapValues___map__eq(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 283;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___map__eq;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* ../lib/standard/collection/hash_collection.nit:283 */
+  ATTR_standard___collection___hash_collection___HashMapValues_____atmap(fra.me.REG[0]) = fra.me.REG[1];
+  stack_frame_head = fra.me.prev;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___count[] = "hash_collection::HashMapValues::(abstract_collection::Collection::count)";
+val_t standard___collection___hash_collection___HashMapValues___count(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t REGB2;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 286;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___count;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:288 */
+  REGB0 = TAG_Int(0);
+  /* ../lib/standard/collection/hash_collection.nit:289 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:290 */
+  while(1) {
+    REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+    if (UNTAG_Bool(REGB1)) {
+    } else {
+      REGB2 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+      if (UNTAG_Bool(REGB2)) {
+        REGB2 = TAG_Bool(0);
+        REGB1 = REGB2;
+      } else {
+        REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
+        REGB1 = REGB2;
+      }
+    }
+    REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
+    if (UNTAG_Bool(REGB1)) {
+      /* ../lib/standard/collection/hash_collection.nit:291 */
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
+      REGB1 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
+      if (UNTAG_Bool(REGB1)) {
+      } else {
+        REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+        if (UNTAG_Bool(REGB2)) {
+          REGB2 = TAG_Bool(0);
+          REGB1 = REGB2;
+        } else {
+          REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
+          REGB1 = REGB2;
+        }
+      }
+      if (UNTAG_Bool(REGB1)) {
+        REGB1 = TAG_Int(1);
+        /* ../lib/standard/kernel.nit:238 */
+        REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
+        /* ../lib/standard/collection/hash_collection.nit:291 */
+        REGB0 = REGB1;
+      }
+      /* ../lib/standard/collection/hash_collection.nit:292 */
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
+      fra.me.REG[0] = fra.me.REG[2];
+    } else {
+      /* ../lib/standard/collection/hash_collection.nit:290 */
+      goto label1;
+    }
+  }
+  label1: while(0);
+  /* ../lib/standard/collection/hash_collection.nit:294 */
+  goto label2;
+  label2: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___first[] = "hash_collection::HashMapValues::(abstract_collection::Collection::first)";
+val_t standard___collection___hash_collection___HashMapValues___first(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 296;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___first;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:296 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 296);
+  }
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___has[] = "hash_collection::HashMapValues::(abstract_collection::Collection::has)";
+val_t standard___collection___hash_collection___HashMapValues___has(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 298;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___has;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:300 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:301 */
+  while(1) {
+    REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+    } else {
+      REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+      if (UNTAG_Bool(REGB1)) {
+        REGB1 = TAG_Bool(0);
+        REGB0 = REGB1;
+      } else {
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
+        REGB0 = REGB1;
+      }
+    }
+    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+    if (UNTAG_Bool(REGB0)) {
+      /* ../lib/standard/collection/hash_collection.nit:302 */
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
+      REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
+      if (UNTAG_Bool(REGB0)) {
+      } else {
+        REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+        if (UNTAG_Bool(REGB1)) {
+          REGB1 = TAG_Bool(0);
+          REGB0 = REGB1;
+        } else {
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
+          REGB0 = REGB1;
+        }
+      }
+      if (UNTAG_Bool(REGB0)) {
+        REGB0 = TAG_Bool(1);
+        goto label1;
+      }
+      /* ../lib/standard/collection/hash_collection.nit:303 */
+      fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
+      fra.me.REG[0] = fra.me.REG[2];
+    } else {
+      /* ../lib/standard/collection/hash_collection.nit:301 */
+      goto label2;
+    }
+  }
+  label2: while(0);
+  /* ../lib/standard/collection/hash_collection.nit:305 */
+  REGB1 = TAG_Bool(0);
+  REGB0 = REGB1;
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___has_only[] = "hash_collection::HashMapValues::(abstract_collection::Collection::has_only)";
+val_t standard___collection___hash_collection___HashMapValues___has_only(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t REGB1;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 308;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___has_only;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:310 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:311 */
+  while(1) {
+    REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+    } else {
+      REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         REGB0 = REGB1;
       } else {
         REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -1233,14 +1853,14 @@ val_t standard___collection___hash_collection___HashMap___has_only(val_t p0, val
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:261 */
+      /* ../lib/standard/collection/hash_collection.nit:312 */
       fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
       REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
       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], fra.me.REG[1]);
@@ -1249,103 +1869,142 @@ val_t standard___collection___hash_collection___HashMap___has_only(val_t p0, val
       }
       REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
       if (UNTAG_Bool(REGB0)) {
-        REGB0 = TAG_Bool(false);
+        REGB0 = TAG_Bool(0);
         goto label1;
       }
-      /* ./../lib/standard//collection//hash_collection.nit:262 */
+      /* ../lib/standard/collection/hash_collection.nit:313 */
       fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[0]);
       fra.me.REG[0] = fra.me.REG[2];
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:260 */
+      /* ../lib/standard/collection/hash_collection.nit:311 */
       goto label2;
     }
   }
   label2: while(0);
-  /* ./../lib/standard//collection//hash_collection.nit:264 */
-  REGB1 = TAG_Bool(true);
+  /* ../lib/standard/collection/hash_collection.nit:315 */
+  REGB1 = TAG_Bool(1);
   REGB0 = REGB1;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
-void standard___collection___hash_collection___HashMap_____braeq(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___is_empty[] = "hash_collection::HashMapValues::(abstract_collection::Collection::is_empty)";
+val_t standard___collection___hash_collection___HashMapValues___is_empty(val_t p0){
+  struct {struct stack_frame_t me;} fra;
   val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 267;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap_____braeq;
+  fra.me.line = 318;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___is_empty;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
+  fra.me.REG_size = 1;
+  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;
-  fra.me.REG[2] = p2;
-  /* ./../lib/standard//collection//hash_collection.nit:269 */
-  REGB0 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:270 */
-  fra.me.REG[3] = CALL_standard___collection___hash_collection___HashCollection___node_at_idx(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:271 */
-  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);
-      REGB1 = REGB2;
-    } else {
-      REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-      REGB1 = REGB2;
-    }
-  }
-  REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-  if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:272 */
-    ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[3]) = fra.me.REG[1];
-    /* ./../lib/standard//collection//hash_collection.nit:273 */
-    ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[3]) = fra.me.REG[2];
-  } else {
-    /* ./../lib/standard//collection//hash_collection.nit:275 */
-    fra.me.REG[2] = NEW_HashMapNode_standard___collection___hash_collection___HashMapNode___init(fra.me.REG[1], fra.me.REG[2]);
-    CALL_standard___collection___hash_collection___HashCollection___store(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[2]);
-  }
+  /* ../lib/standard/collection/hash_collection.nit:318 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_standard___collection___abstract_collection___MapRead___is_empty(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___length[] = "hash_collection::HashMapValues::(abstract_collection::Collection::length)";
+val_t standard___collection___hash_collection___HashMapValues___length(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 319;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___length;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:319 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  REGB0 = CALL_standard___collection___abstract_collection___MapRead___length(fra.me.REG[0])(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___iterator[] = "hash_collection::HashMapValues::(abstract_collection::Collection::iterator)";
+val_t standard___collection___hash_collection___HashMapValues___iterator(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 321;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___iterator;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:321 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___iterator(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = NEW_MapValuesIterator_standard___collection___abstract_collection___MapValuesIterator___init(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return fra.me.REG[0];
+}
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___clear[] = "hash_collection::HashMapValues::(abstract_collection::RemovableCollection::clear)";
+void standard___collection___hash_collection___HashMapValues___clear(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 323;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___clear;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:323 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  CALL_standard___collection___abstract_collection___Map___clear(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
-void standard___collection___hash_collection___HashMap___remove(val_t p0, val_t p1){
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___remove[] = "hash_collection::HashMapValues::(abstract_collection::RemovableCollection::remove)";
+void standard___collection___hash_collection___HashMapValues___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 279;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___remove;
+  fra.me.line = 325;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___remove;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:281 */
+  /* ../lib/standard/collection/hash_collection.nit:327 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:328 */
   fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
-  /* ./../lib/standard//collection//hash_collection.nit:282 */
+  /* ../lib/standard/collection/hash_collection.nit:329 */
   while(1) {
     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);
@@ -1354,14 +2013,14 @@ void standard___collection___hash_collection___HashMap___remove(val_t p0, val_t
     }
     REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
     if (UNTAG_Bool(REGB0)) {
-      /* ./../lib/standard//collection//hash_collection.nit:283 */
+      /* ../lib/standard/collection/hash_collection.nit:330 */
       fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[2]);
       REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[3],fra.me.REG[1]));
       if (UNTAG_Bool(REGB0)) {
       } else {
         REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
-          REGB1 = TAG_Bool(false);
+          REGB1 = TAG_Bool(0);
           REGB0 = REGB1;
         } else {
           REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
@@ -1369,22 +2028,22 @@ void standard___collection___hash_collection___HashMap___remove(val_t p0, val_t
         }
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ./../lib/standard//collection//hash_collection.nit:284 */
+        /* ../lib/standard/collection/hash_collection.nit:331 */
         REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2])!=NIT_NULL);
         if (UNTAG_Bool(REGB0)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 284);
+          nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 331);
         }
         fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2]);
         CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-        /* ./../lib/standard//collection//hash_collection.nit:285 */
+        /* ../lib/standard/collection/hash_collection.nit:332 */
         goto label1;
       }
-      /* ./../lib/standard//collection//hash_collection.nit:287 */
+      /* ../lib/standard/collection/hash_collection.nit:334 */
       fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[2]);
       fra.me.REG[2] = fra.me.REG[3];
     } else {
-      /* ./../lib/standard//collection//hash_collection.nit:282 */
+      /* ../lib/standard/collection/hash_collection.nit:329 */
       goto label2;
     }
   }
@@ -1393,82 +2052,116 @@ void standard___collection___hash_collection___HashMap___remove(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return;
 }
-void standard___collection___hash_collection___HashMap___remove_at(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___remove_all[] = "hash_collection::HashMapValues::(abstract_collection::RemovableCollection::remove_all)";
+void standard___collection___hash_collection___HashMapValues___remove_all(val_t p0, val_t p1){
+  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
+  val_t REGB0;
+  val_t REGB1;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 291;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___remove_at;
+  fra.me.line = 338;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___remove_all;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
+  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;
-  /* ./../lib/standard//collection//hash_collection.nit:291 */
-  CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-void standard___collection___hash_collection___HashMap___clear(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 293;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___clear;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ./../lib/standard//collection//hash_collection.nit:293 */
-  CALL_standard___collection___hash_collection___HashCollection___raz(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:340 */
+  fra.me.REG[0] = CALL_standard___collection___hash_collection___HashMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:341 */
+  fra.me.REG[2] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:342 */
+  while(1) {
+    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+    if (UNTAG_Bool(REGB0)) {
+    } else {
+      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
+      if (UNTAG_Bool(REGB1)) {
+        REGB1 = TAG_Bool(0);
+        REGB0 = REGB1;
+      } else {
+        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
+        REGB0 = REGB1;
+      }
+    }
+    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
+    if (UNTAG_Bool(REGB0)) {
+      /* ../lib/standard/collection/hash_collection.nit:343 */
+      fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[2]);
+      REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[3],fra.me.REG[1]));
+      if (UNTAG_Bool(REGB0)) {
+      } else {
+        REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
+        if (UNTAG_Bool(REGB1)) {
+          REGB1 = TAG_Bool(0);
+          REGB0 = REGB1;
+        } else {
+          REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
+          REGB0 = REGB1;
+        }
+      }
+      if (UNTAG_Bool(REGB0)) {
+        /* ../lib/standard/collection/hash_collection.nit:344 */
+        REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2])!=NIT_NULL);
+        if (UNTAG_Bool(REGB0)) {
+        } else {
+          nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 344);
+        }
+        fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2]);
+        CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
+      }
+      /* ../lib/standard/collection/hash_collection.nit:346 */
+      fra.me.REG[3] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[2]);
+      fra.me.REG[2] = fra.me.REG[3];
+    } else {
+      /* ../lib/standard/collection/hash_collection.nit:342 */
+      goto label1;
+    }
+  }
+  label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
-void standard___collection___hash_collection___HashMap___init(val_t p0, int* init_table){
-  int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMap].i;
+static const char LOCATE_standard___collection___hash_collection___HashMapValues___init[] = "hash_collection::HashMapValues::init";
+void standard___collection___hash_collection___HashMapValues___init(val_t p0, val_t p1, int* init_table){
+  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapValues].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
   val_t tmp;
-  if (init_table[itpos2]) return;
+  if (init_table[itpos4]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 295;
-  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMap___init;
+  fra.me.line = 0;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapValues___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:295 */
-  fra.me.REG[1] = fra.me.REG[0];
-  CALL_standard___collection___hash_collection___HashCollection___init(fra.me.REG[0])(fra.me.REG[0], init_table);
-  /* ./../lib/standard//collection//hash_collection.nit:297 */
-  REGB0 = TAG_Int(0);
-  ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[1]) = REGB0;
-  /* ./../lib/standard//collection//hash_collection.nit:298 */
-  REGB0 = TAG_Int(0);
-  ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[1]) = REGB0;
-  /* ./../lib/standard//collection//hash_collection.nit:299 */
-  REGB0 = TAG_Int(0);
-  CALL_standard___collection___hash_collection___HashCollection___enlarge(fra.me.REG[1])(fra.me.REG[1], REGB0);
+  fra.me.REG[1] = p1;
+  ATTR_standard___collection___hash_collection___HashMapValues_____atmap(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos2] = 1;
+  init_table[itpos4] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapNode___init[] = "hash_collection::HashMapNode::init";
 void standard___collection___hash_collection___HashMapNode___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapNode].i;
+  int itpos5 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapNode].i;
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t tmp;
-  if (init_table[itpos3]) return;
+  if (init_table[itpos5]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 308;
+  fra.me.line = 356;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapNode___init;
   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;
@@ -1476,16 +2169,17 @@ void standard___collection___hash_collection___HashMapNode___init(val_t p0, val_
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/standard//collection//hash_collection.nit:308 */
+  /* ../lib/standard/collection/hash_collection.nit:356 */
   fra.me.REG[3] = fra.me.REG[0];
-  /* ./../lib/standard//collection//hash_collection.nit:310 */
+  /* ../lib/standard/collection/hash_collection.nit:358 */
   CALL_standard___collection___hash_collection___HashNode___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], init_table);
-  /* ./../lib/standard//collection//hash_collection.nit:311 */
+  /* ../lib/standard/collection/hash_collection.nit:359 */
   ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[3]) = fra.me.REG[2];
   stack_frame_head = fra.me.prev;
-  init_table[itpos3] = 1;
+  init_table[itpos5] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapIterator___is_ok[] = "hash_collection::HashMapIterator::(abstract_collection::MapIterator::is_ok)";
 val_t standard___collection___hash_collection___HashMapIterator___is_ok(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1493,20 +2187,21 @@ val_t standard___collection___hash_collection___HashMapIterator___is_ok(val_t p0
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 317;
+  fra.me.line = 365;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapIterator___is_ok;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:317 */
+  /* ../lib/standard/collection/hash_collection.nit:365 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -1519,29 +2214,31 @@ val_t standard___collection___hash_collection___HashMapIterator___is_ok(val_t p0
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapIterator___item[] = "hash_collection::HashMapIterator::(abstract_collection::MapIterator::item)";
 val_t standard___collection___hash_collection___HashMapIterator___item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 319;
+  fra.me.line = 367;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapIterator___item;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:321 */
-  REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:369 */
+  REGB0 = CALL_standard___collection___abstract_collection___MapIterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 321);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 369);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:322 */
+  /* ../lib/standard/collection/hash_collection.nit:370 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 322);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 370);
   }
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapNode____value(fra.me.REG[0]);
   goto label1;
@@ -1549,34 +2246,36 @@ val_t standard___collection___hash_collection___HashMapIterator___item(val_t p0)
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapIterator___key[] = "hash_collection::HashMapIterator::(abstract_collection::MapIterator::key)";
 val_t standard___collection___hash_collection___HashMapIterator___key(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 331;
+  fra.me.line = 379;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapIterator___key;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:333 */
-  REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:381 */
+  REGB0 = CALL_standard___collection___abstract_collection___MapIterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 333);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 381);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:334 */
+  /* ../lib/standard/collection/hash_collection.nit:382 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 334);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 382);
   }
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 334);
+    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 382);
   }
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
   goto label1;
@@ -1584,60 +2283,91 @@ val_t standard___collection___hash_collection___HashMapIterator___key(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapIterator___next[] = "hash_collection::HashMapIterator::(abstract_collection::MapIterator::next)";
 void standard___collection___hash_collection___HashMapIterator___next(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 337;
+  fra.me.line = 385;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapIterator___next;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:339 */
-  REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
+  /* ../lib/standard/collection/hash_collection.nit:387 */
+  REGB0 = CALL_standard___collection___abstract_collection___MapIterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 339);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 387);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:340 */
+  /* ../lib/standard/collection/hash_collection.nit:388 */
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 340);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 388);
   }
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[1]);
   ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashMapIterator___init[] = "hash_collection::HashMapIterator::init";
 void standard___collection___hash_collection___HashMapIterator___init(val_t p0, val_t p1, int* init_table){
-  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapIterator].i;
+  int itpos6 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashMapIterator].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos4]) return;
+  if (init_table[itpos6]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 349;
+  fra.me.line = 397;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashMapIterator___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:351 */
+  /* ../lib/standard/collection/hash_collection.nit:399 */
   ATTR_standard___collection___hash_collection___HashMapIterator____map(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:352 */
+  /* ../lib/standard/collection/hash_collection.nit:400 */
   fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___first_item(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_standard___collection___hash_collection___HashMapIterator____node(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos4] = 1;
+  init_table[itpos6] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___length[] = "hash_collection::HashSet::(abstract_collection::Collection::length)";
+val_t standard___collection___hash_collection___HashSet___length(val_t p0){
+  struct {struct stack_frame_t me;} fra;
+  val_t REGB0;
+  val_t tmp;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 410;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___length;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:410 */
+  REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
+  if (UNTAG_Bool(REGB0)) {
+  } else {
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 410);
+  }
+  REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
+  goto label1;
+  label1: while(0);
+  stack_frame_head = fra.me.prev;
+  return REGB0;
+}
+static const char LOCATE_standard___collection___hash_collection___HashSet___is_empty[] = "hash_collection::HashSet::(abstract_collection::Collection::is_empty)";
 val_t standard___collection___hash_collection___HashSet___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1646,26 +2376,27 @@ val_t standard___collection___hash_collection___HashSet___is_empty(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 360;
+  fra.me.line = 412;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___is_empty;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:360 */
+  /* ../lib/standard/collection/hash_collection.nit:412 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 360);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 412);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ./../lib/standard//kernel.nit:210 */
+    /* ../lib/standard/kernel.nit:230 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ./../lib/standard//collection//hash_collection.nit:360 */
+    /* ../lib/standard/collection/hash_collection.nit:412 */
     REGB2 = REGB1;
   }
   goto label1;
@@ -1673,44 +2404,52 @@ val_t standard___collection___hash_collection___HashSet___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___first[] = "hash_collection::HashSet::(abstract_collection::Collection::first)";
 val_t standard___collection___hash_collection___HashSet___first(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t REGB1;
+  val_t REGB2;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 362;
+  fra.me.line = 414;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___first;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:364 */
+  /* ../lib/standard/collection/hash_collection.nit:416 */
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 364);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___hash_collection, 416);
   }
   REGB0 = ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[0]);
   REGB1 = TAG_Int(0);
-  /* ./../lib/standard//kernel.nit:217 */
+  REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
+  if (UNTAG_Bool(REGB2)) {
+  } else {
+    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
+  }
+  /* ../lib/standard/kernel.nit:237 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//hash_collection.nit:364 */
+  /* ../lib/standard/collection/hash_collection.nit:416 */
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 364);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 416);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:365 */
+  /* ../lib/standard/collection/hash_collection.nit:417 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 365);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 417);
   }
   REGB1 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 365);
+    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 417);
   }
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
   goto label1;
@@ -1718,6 +2457,7 @@ val_t standard___collection___hash_collection___HashSet___first(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___has[] = "hash_collection::HashSet::(abstract_collection::Collection::has)";
 val_t standard___collection___hash_collection___HashSet___has(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1725,22 +2465,23 @@ val_t standard___collection___hash_collection___HashSet___has(val_t p0, val_t p1
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 368;
+  fra.me.line = 420;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___has;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:370 */
+  /* ../lib/standard/collection/hash_collection.nit:422 */
   fra.me.REG[1] = CALL_standard___collection___hash_collection___HashCollection___node_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -1753,6 +2494,7 @@ val_t standard___collection___hash_collection___HashSet___has(val_t p0, val_t p1
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___add[] = "hash_collection::HashSet::(abstract_collection::SimpleCollection::add)";
 void standard___collection___hash_collection___HashSet___add(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -1761,26 +2503,27 @@ void standard___collection___hash_collection___HashSet___add(val_t p0, val_t p1)
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 373;
+  fra.me.line = 425;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___add;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:375 */
+  /* ../lib/standard/collection/hash_collection.nit:427 */
   REGB0 = CALL_standard___collection___hash_collection___HashCollection___index_at(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:376 */
+  /* ../lib/standard/collection/hash_collection.nit:428 */
   fra.me.REG[2] = CALL_standard___collection___hash_collection___HashCollection___node_at_idx(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
-  /* ./../lib/standard//collection//hash_collection.nit:377 */
+  /* ../lib/standard/collection/hash_collection.nit:429 */
   REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     REGB2 = TAG_Bool(fra.me.REG[2]==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[2])(fra.me.REG[2], NIT_NULL);
@@ -1789,126 +2532,162 @@ void standard___collection___hash_collection___HashSet___add(val_t p0, val_t p1)
   }
   REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
   if (UNTAG_Bool(REGB1)) {
-    /* ./../lib/standard//collection//hash_collection.nit:378 */
+    /* ../lib/standard/collection/hash_collection.nit:430 */
     ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2]) = fra.me.REG[1];
   } else {
-    /* ./../lib/standard//collection//hash_collection.nit:380 */
+    /* ../lib/standard/collection/hash_collection.nit:432 */
     fra.me.REG[1] = NEW_HashSetNode_standard___collection___hash_collection___HashSetNode___init(fra.me.REG[1]);
     CALL_standard___collection___hash_collection___HashCollection___store(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
   }
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___remove[] = "hash_collection::HashSet::(abstract_collection::RemovableCollection::remove)";
 void standard___collection___hash_collection___HashSet___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 384;
+  fra.me.line = 436;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___remove;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:384 */
+  /* ../lib/standard/collection/hash_collection.nit:436 */
   CALL_standard___collection___hash_collection___HashCollection___remove_node(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___clear[] = "hash_collection::HashSet::(abstract_collection::RemovableCollection::clear)";
 void standard___collection___hash_collection___HashSet___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 386;
+  fra.me.line = 438;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___clear;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:386 */
+  /* ../lib/standard/collection/hash_collection.nit:438 */
   CALL_standard___collection___hash_collection___HashCollection___raz(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___iterator[] = "hash_collection::HashSet::(abstract_collection::Collection::iterator)";
 val_t standard___collection___hash_collection___HashSet___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 388;
+  fra.me.line = 440;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___iterator;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:388 */
+  /* ../lib/standard/collection/hash_collection.nit:440 */
   fra.me.REG[0] = NEW_HashSetIterator_standard___collection___hash_collection___HashSetIterator___init(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashSet___init[] = "hash_collection::HashSet::init";
 void standard___collection___hash_collection___HashSet___init(val_t p0, int* init_table){
-  int itpos5 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSet].i;
+  int itpos7 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSet].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
-  if (init_table[itpos5]) return;
+  if (init_table[itpos7]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 390;
+  fra.me.line = 442;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:390 */
+  /* ../lib/standard/collection/hash_collection.nit:442 */
   fra.me.REG[1] = fra.me.REG[0];
   CALL_standard___collection___hash_collection___HashCollection___init(fra.me.REG[0])(fra.me.REG[0], init_table);
-  /* ./../lib/standard//collection//hash_collection.nit:392 */
+  /* ../lib/standard/collection/hash_collection.nit:444 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___hash_collection___HashCollection____capacity(fra.me.REG[1]) = REGB0;
-  /* ./../lib/standard//collection//hash_collection.nit:393 */
+  /* ../lib/standard/collection/hash_collection.nit:445 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___hash_collection___HashCollection____length(fra.me.REG[1]) = REGB0;
-  /* ./../lib/standard//collection//hash_collection.nit:394 */
+  /* ../lib/standard/collection/hash_collection.nit:446 */
   REGB0 = TAG_Int(0);
   CALL_standard___collection___hash_collection___HashCollection___enlarge(fra.me.REG[1])(fra.me.REG[1], REGB0);
   stack_frame_head = fra.me.prev;
-  init_table[itpos5] = 1;
+  init_table[itpos7] = 1;
+  return;
+}
+static const char LOCATE_standard___collection___hash_collection___HashSet___from[] = "hash_collection::HashSet::from";
+void standard___collection___hash_collection___HashSet___from(val_t p0, val_t p1, int* init_table){
+  int itpos8 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSet].i;
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  val_t tmp;
+  if (init_table[itpos8]) return;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___hash_collection;
+  fra.me.line = 449;
+  fra.me.meth = LOCATE_standard___collection___hash_collection___HashSet___from;
+  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;
+  /* ../lib/standard/collection/hash_collection.nit:451 */
+  CALL_standard___collection___hash_collection___HashSet___init(fra.me.REG[0])(fra.me.REG[0], init_table);
+  /* ../lib/standard/collection/hash_collection.nit:452 */
+  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  init_table[itpos8] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSetNode___init[] = "hash_collection::HashSetNode::init";
 void standard___collection___hash_collection___HashSetNode___init(val_t p0, val_t p1, int* init_table){
-  int itpos6 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSetNode].i;
+  int itpos9 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSetNode].i;
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t tmp;
-  if (init_table[itpos6]) return;
+  if (init_table[itpos9]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 402;
+  fra.me.line = 460;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSetNode___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:402 */
+  /* ../lib/standard/collection/hash_collection.nit:460 */
   fra.me.REG[2] = fra.me.REG[0];
   fra.me.REG[3] = fra.me.REG[1];
   CALL_standard___collection___hash_collection___HashNode___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], init_table);
-  /* ./../lib/standard//collection//hash_collection.nit:404 */
+  /* ../lib/standard/collection/hash_collection.nit:462 */
   ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[2]) = fra.me.REG[3];
   stack_frame_head = fra.me.prev;
-  init_table[itpos6] = 1;
+  init_table[itpos9] = 1;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSetIterator___is_ok[] = "hash_collection::HashSetIterator::(abstract_collection::Iterator::is_ok)";
 val_t standard___collection___hash_collection___HashSetIterator___is_ok(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1916,20 +2695,21 @@ val_t standard___collection___hash_collection___HashSetIterator___is_ok(val_t p0
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 410;
+  fra.me.line = 468;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSetIterator___is_ok;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:410 */
+  /* ../lib/standard/collection/hash_collection.nit:468 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashSetIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(false);
+      REGB1 = TAG_Bool(0);
       REGB0 = REGB1;
     } else {
       REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
@@ -1942,34 +2722,36 @@ val_t standard___collection___hash_collection___HashSetIterator___is_ok(val_t p0
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSetIterator___item[] = "hash_collection::HashSetIterator::(abstract_collection::Iterator::item)";
 val_t standard___collection___hash_collection___HashSetIterator___item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 412;
+  fra.me.line = 470;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSetIterator___item;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:414 */
+  /* ../lib/standard/collection/hash_collection.nit:472 */
   REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 414);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 472);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:415 */
+  /* ../lib/standard/collection/hash_collection.nit:473 */
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashSetIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 415);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 473);
   }
   REGB0 = TAG_Bool(ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 415);
+    nit_abort("Uninitialized attribute %s", "_key", LOCATE_standard___collection___hash_collection, 473);
   }
   fra.me.REG[0] = ATTR_standard___collection___hash_collection___HashNode____key(fra.me.REG[0]);
   goto label1;
@@ -1977,57 +2759,61 @@ val_t standard___collection___hash_collection___HashSetIterator___item(val_t p0)
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___hash_collection___HashSetIterator___next[] = "hash_collection::HashSetIterator::(abstract_collection::Iterator::next)";
 void standard___collection___hash_collection___HashSetIterator___next(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 418;
+  fra.me.line = 476;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSetIterator___next;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:420 */
+  /* ../lib/standard/collection/hash_collection.nit:478 */
   REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 420);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___hash_collection, 478);
   }
-  /* ./../lib/standard//collection//hash_collection.nit:421 */
+  /* ../lib/standard/collection/hash_collection.nit:479 */
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashSetIterator____node(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 421);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___hash_collection, 479);
   }
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashNode____next_item(fra.me.REG[1]);
   ATTR_standard___collection___hash_collection___HashSetIterator____node(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___hash_collection___HashSetIterator___init[] = "hash_collection::HashSetIterator::init";
 void standard___collection___hash_collection___HashSetIterator___init(val_t p0, val_t p1, int* init_table){
-  int itpos7 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSetIterator].i;
+  int itpos10 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___hash_collection___HashSetIterator].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos7]) return;
+  if (init_table[itpos10]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___hash_collection;
-  fra.me.line = 430;
+  fra.me.line = 488;
   fra.me.meth = LOCATE_standard___collection___hash_collection___HashSetIterator___init;
   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;
-  /* ./../lib/standard//collection//hash_collection.nit:432 */
+  /* ../lib/standard/collection/hash_collection.nit:490 */
   ATTR_standard___collection___hash_collection___HashSetIterator____set(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/standard//collection//hash_collection.nit:433 */
+  /* ../lib/standard/collection/hash_collection.nit:491 */
   fra.me.REG[1] = ATTR_standard___collection___hash_collection___HashCollection____first_item(fra.me.REG[1]);
   ATTR_standard___collection___hash_collection___HashSetIterator____node(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos7] = 1;
+  init_table[itpos10] = 1;
   return;
 }