use nitg to bootstrap; drop bootstrap of nitc

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

diff --git a/c_src/metamodel___partial_order._sep.c b/c_src/metamodel___partial_order._sep.c
deleted file mode 100644 (file)
index c494f68..0000000
--- a/c_src/metamodel___partial_order._sep.c
+++ /dev/null
@@ -1,1991 +0,0 @@
-/* This C file is generated by NIT to compile module metamodel___partial_order. */
-#include "metamodel___partial_order._sep.h"
-static const char LOCATE_metamodel___partial_order___PartialOrder___roots[] = "partial_order::PartialOrder::roots";
-val_t metamodel___partial_order___PartialOrder___roots(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_metamodel___partial_order;
-  fra.me.line = 30;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___roots;
-  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;
-  /* metamodel/partial_order.nit:30 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____roots(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_roots", LOCATE_metamodel___partial_order, 30);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____roots(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___is_empty[] = "partial_order::PartialOrder::(abstract_collection::Collection::is_empty)";
-val_t metamodel___partial_order___PartialOrder___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_metamodel___partial_order;
-  fra.me.line = 35;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:35 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 35);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(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_metamodel___partial_order___PartialOrder___length[] = "partial_order::PartialOrder::(abstract_collection::Collection::length)";
-val_t metamodel___partial_order___PartialOrder___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_metamodel___partial_order;
-  fra.me.line = 37;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:37 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 37);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(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_metamodel___partial_order___PartialOrder___first[] = "partial_order::PartialOrder::(abstract_collection::Collection::first)";
-val_t metamodel___partial_order___PartialOrder___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_metamodel___partial_order;
-  fra.me.line = 39;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:39 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements_list", LOCATE_metamodel___partial_order, 39);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[0])(fra.me.REG[0]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___has[] = "partial_order::PartialOrder::(abstract_collection::Collection::has)";
-val_t metamodel___partial_order___PartialOrder___has(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 41;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:41 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 41);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  REGB0 = CALL_standard___collection___abstract_collection___MapRead___has_key(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___has_only[] = "partial_order::PartialOrder::(abstract_collection::Collection::has_only)";
-val_t metamodel___partial_order___PartialOrder___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 REGB2;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 43;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:43 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 43);
-  }
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  REGB0 = CALL_standard___collection___abstract_collection___MapRead___length(fra.me.REG[2])(fra.me.REG[2]);
-  REGB1 = TAG_Int(1);
-  REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    /* ../lib/standard/kernel.nit:237 */
-    REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* metamodel/partial_order.nit:43 */
-    REGB2 = REGB1;
-  }
-  if (UNTAG_Bool(REGB2)) {
-    REGB2 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 43);
-    }
-    fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___values(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[0])(fra.me.REG[0]);
-    REGB2 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[1],fra.me.REG[0]));
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(0);
-        REGB2 = REGB1;
-      } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-        REGB2 = REGB1;
-      }
-    }
-  } else {
-    REGB1 = TAG_Bool(0);
-    REGB2 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB2;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___count[] = "partial_order::PartialOrder::(abstract_collection::Collection::count)";
-val_t metamodel___partial_order___PartialOrder___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_metamodel___partial_order;
-  fra.me.line = 45;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:47 */
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  if (UNTAG_Bool(REGB0)) {
-    /* metamodel/partial_order.nit:48 */
-    REGB0 = TAG_Int(1);
-    goto label1;
-  } else {
-    /* metamodel/partial_order.nit:50 */
-    REGB1 = TAG_Int(0);
-    REGB0 = REGB1;
-    goto label1;
-  }
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___iterator[] = "partial_order::PartialOrder::(abstract_collection::Collection::iterator)";
-val_t metamodel___partial_order___PartialOrder___iterator(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_metamodel___partial_order;
-  fra.me.line = 54;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:54 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements_list", LOCATE_metamodel___partial_order, 54);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[0])(fra.me.REG[0]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder_____bra[] = "partial_order::PartialOrder::[]";
-val_t metamodel___partial_order___PartialOrder_____bra(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 58;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder_____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;
-  /* metamodel/partial_order.nit:61 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 61);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_standard___collection___abstract_collection___MapRead_____bra(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___to_dot[] = "partial_order::PartialOrder::to_dot";
-val_t metamodel___partial_order___PartialOrder___to_dot(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_3; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 64;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___to_dot;
-  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;
-  /* metamodel/partial_order.nit:67 */
-  fra.me.REG[1] = NEW_Buffer_standard___string___Buffer___init();
-  /* metamodel/partial_order.nit:68 */
-  fra.me.REG[2] = CALL_metamodel___partial_order___PartialOrder___to_dot_header(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* metamodel/partial_order.nit:69 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 69);
-  }
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  fra.me.REG[2] = CALL_standard___collection___abstract_collection___MapRead___values(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[2])(fra.me.REG[2], (&(fra.me)), ((fun_t)OC_metamodel___partial_order___PartialOrder___to_dot_1));
-  /* metamodel/partial_order.nit:75 */
-  if (!once_value_3) {
-    fra.me.REG[0] = BOX_NativeString("}\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_3 = fra.me.REG[0];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[0] = once_value_3;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* metamodel/partial_order.nit:76 */
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  goto label4;
-  label4: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-  void OC_metamodel___partial_order___PartialOrder___to_dot_1(struct stack_frame_t *closctx, val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
-    struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
-    val_t REGB0;
-    val_t REGB1;
-    val_t REGB2;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_metamodel___partial_order;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___to_dot;
-    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;
-    fra.me.REG[3] = NIT_NULL;
-    fra.me.REG[4] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* metamodel/partial_order.nit:70 */
-    fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrder___to_dot_node(closctx->REG[0])(closctx->REG[0], fra.me.REG[1]);
-    CALL_standard___collection___abstract_collection___Sequence___append(closctx->REG[1])(closctx->REG[1], fra.me.REG[1]);
-    /* metamodel/partial_order.nit:71 */
-    fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[0])(fra.me.REG[0]);
-    /* ../lib/standard/collection/array.nit:270 */
-    REGB0 = TAG_Int(0);
-    /* ../lib/standard/collection/array.nit:271 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    /* ../lib/standard/collection/array.nit:272 */
-    fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-    /* ../lib/standard/collection/array.nit:273 */
-    while(1) {
-      /* ../lib/standard/collection/array.nit:24 */
-      REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-      }
-      REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-      REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-      }
-      /* ../lib/standard/kernel.nit:242 */
-      REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:273 */
-      if (UNTAG_Bool(REGB1)) {
-        /* ../lib/standard/collection/array.nit:274 */
-        REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-        if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-        }
-        /* ../lib/standard/collection/array.nit:725 */
-        fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-        /* metamodel/partial_order.nit:72 */
-        fra.me.REG[4] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[0])(fra.me.REG[0]);
-        fra.me.REG[3] = CALL_metamodel___partial_order___PartialOrder___to_dot_edge(closctx->REG[0])(closctx->REG[0], fra.me.REG[4], fra.me.REG[3]);
-        CALL_standard___collection___abstract_collection___Sequence___append(closctx->REG[1])(closctx->REG[1], fra.me.REG[3]);
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB1 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:245 */
-        REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB0 = REGB1;
-      } else {
-        /* ../lib/standard/collection/array.nit:273 */
-        goto label2;
-      }
-    }
-    label2: while(0);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_metamodel___partial_order___PartialOrder___to_dot_header[] = "partial_order::PartialOrder::to_dot_header";
-val_t metamodel___partial_order___PartialOrder___to_dot_header(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 79;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___to_dot_header;
-  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;
-  /* metamodel/partial_order.nit:82 */
-  if (!once_value_1) {
-    fra.me.REG[0] = BOX_NativeString("digraph G {\ngraph [rankdir=BT];\n");
-    REGB0 = TAG_Int(32);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_1 = fra.me.REG[0];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[0] = once_value_1;
-  fra.me.REG[0] = fra.me.REG[0];
-  goto label2;
-  label2: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___to_dot_node[] = "partial_order::PartialOrder::to_dot_node";
-val_t metamodel___partial_order___PartialOrder___to_dot_node(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  static val_t once_value_2; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 85;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___to_dot_node;
-  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;
-  /* metamodel/partial_order.nit:88 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[2] = BOX_NativeString("\"");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_1 = fra.me.REG[2];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[2] = once_value_1;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  if (!once_value_2) {
-    fra.me.REG[1] = BOX_NativeString("\";\n");
-    REGB0 = TAG_Int(3);
-    fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-    once_value_2 = fra.me.REG[1];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[1] = once_value_2;
-  fra.me.REG[1] = fra.me.REG[1];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___to_dot_edge[] = "partial_order::PartialOrder::to_dot_edge";
-val_t metamodel___partial_order___PartialOrder___to_dot_edge(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 tmp;
-  static val_t once_value_1; /* Once value */
-  static val_t once_value_2; /* Once value */
-  static val_t once_value_3; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 91;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___to_dot_edge;
-  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;
-  fra.me.REG[2] = p2;
-  /* metamodel/partial_order.nit:94 */
-  REGB0 = TAG_Int(5);
-  fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[3] = BOX_NativeString("\"");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_1 = fra.me.REG[3];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[3] = once_value_1;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  if (!once_value_2) {
-    fra.me.REG[1] = BOX_NativeString("\" -> \"");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-    once_value_2 = fra.me.REG[1];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[1] = once_value_2;
-  fra.me.REG[1] = fra.me.REG[1];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  if (!once_value_3) {
-    fra.me.REG[2] = BOX_NativeString("\";\n");
-    REGB0 = TAG_Int(3);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_3 = fra.me.REG[2];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[2] = once_value_3;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  goto label4;
-  label4: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___select_smallests[] = "partial_order::PartialOrder::select_smallests";
-val_t metamodel___partial_order___PartialOrder___select_smallests(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} 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_metamodel___partial_order;
-  fra.me.line = 97;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___select_smallests;
-  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;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* metamodel/partial_order.nit:100 */
-  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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___init();
-    goto label1;
-  }
-  /* metamodel/partial_order.nit:101 */
-  REGB0 = CALL_metamodel___partial_order___PartialOrder___has_all(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Assert failed", NULL, LOCATE_metamodel___partial_order, 101);
-  }
-  /* metamodel/partial_order.nit:102 */
-  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_metamodel___partial_order, 102);
-  }
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  /* metamodel/partial_order.nit:103 */
-  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_metamodel___partial_order, 103);
-  }
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  /* metamodel/partial_order.nit:104 */
-  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_metamodel___partial_order, 104);
-  }
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[1])(fra.me.REG[1], (&(fra.me)), ((fun_t)OC_metamodel___partial_order___PartialOrder___select_smallests_2));
-  /* metamodel/partial_order.nit:115 */
-  fra.me.REG[2] = fra.me.REG[3];
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[2];
-}
-  void OC_metamodel___partial_order___PartialOrder___select_smallests_2(struct stack_frame_t *closctx, val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
-    struct {struct stack_frame_t me;} fra;
-    val_t REGB0;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_metamodel___partial_order;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___select_smallests;
-    fra.me.has_broke = 0;
-    fra.me.REG_size = 1;
-    fra.me.nitni_local_ref_head = NULL;
-    fra.me.REG[0] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* metamodel/partial_order.nit:106 */
-    REGB0 = CALL_metamodel___partial_order___PartialOrder___add_to_smallests(closctx->REG[0])(closctx->REG[0], fra.me.REG[0], closctx->REG[3], closctx->REG[4]);
-    /* metamodel/partial_order.nit:107 */
-    if (UNTAG_Bool(REGB0)) {
-      /* metamodel/partial_order.nit:110 */
-      fra.me.REG[0] = closctx->REG[4];
-      /* metamodel/partial_order.nit:111 */
-      closctx->REG[4] = closctx->REG[3];
-      /* metamodel/partial_order.nit:112 */
-      closctx->REG[3] = fra.me.REG[0];
-    }
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_metamodel___partial_order___PartialOrder___add[] = "partial_order::PartialOrder::add";
-val_t metamodel___partial_order___PartialOrder___add(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} 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_metamodel___partial_order;
-  fra.me.line = 118;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___add;
-  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;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* metamodel/partial_order.nit:121 */
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Assert failed", NULL, LOCATE_metamodel___partial_order, 121);
-  }
-  /* metamodel/partial_order.nit:122 */
-  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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(1);
-  } else {
-    REGB1 = CALL_metamodel___partial_order___PartialOrder___has_all(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Assert failed", NULL, LOCATE_metamodel___partial_order, 122);
-  }
-  /* metamodel/partial_order.nit:123 */
-  fra.me.REG[3] = CALL_metamodel___partial_order___PartialOrder___select_smallests(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  /* metamodel/partial_order.nit:124 */
-  fra.me.REG[3] = CALL_metamodel___partial_order___PartialOrder___new_poe(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[3]);
-  /* metamodel/partial_order.nit:125 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 125);
-  }
-  fra.me.REG[4] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Map_____braeq(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1], fra.me.REG[3]);
-  /* metamodel/partial_order.nit:126 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements_list", LOCATE_metamodel___partial_order, 126);
-  }
-  fra.me.REG[4] = ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
-  /* metamodel/partial_order.nit:127 */
-  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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(1);
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_metamodel___partial_order, 127);
-    }
-    REGB1 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* metamodel/partial_order.nit:128 */
-    REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____roots(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_roots", LOCATE_metamodel___partial_order, 128);
-    }
-    fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____roots(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  }
-  /* metamodel/partial_order.nit:130 */
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[3];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___has_all[] = "partial_order::PartialOrder::has_all";
-val_t metamodel___partial_order___PartialOrder___has_all(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 133;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___has_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;
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[1])(fra.me.REG[1], (&(fra.me)), ((fun_t)OC_metamodel___partial_order___PartialOrder___has_all_1));
-  switch ((&(fra.me))->has_broke) {
-    case 0: break;
-    case 1: (&(fra.me))->has_broke = 0; goto label3;
-  }
-  /* metamodel/partial_order.nit:141 */
-  REGB0 = TAG_Bool(1);
-  fra.me.REG[1] = REGB0;
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-  void OC_metamodel___partial_order___PartialOrder___has_all_1(struct stack_frame_t *closctx, val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
-    struct {struct stack_frame_t me;} fra;
-    val_t REGB0;
-    fun_t CREG[1];
-    val_t tmp;
-    /* metamodel/partial_order.nit:136 */
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_metamodel___partial_order;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___has_all;
-    fra.me.has_broke = 0;
-    fra.me.REG_size = 1;
-    fra.me.nitni_local_ref_head = NULL;
-    fra.me.REG[0] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* metamodel/partial_order.nit:137 */
-    REGB0 = CALL_standard___collection___abstract_collection___Collection___has(closctx->REG[0])(closctx->REG[0], fra.me.REG[0]);
-    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-    if (UNTAG_Bool(REGB0)) {
-      /* metamodel/partial_order.nit:138 */
-      REGB0 = TAG_Bool(0);
-      closctx->REG[1] = REGB0;
-      closctx->has_broke = 1;
-      goto label2;
-    }
-    label2: while(0);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_metamodel___partial_order___PartialOrder___new_poe[] = "partial_order::PartialOrder::new_poe";
-val_t metamodel___partial_order___PartialOrder___new_poe(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 144;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___new_poe;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* metamodel/partial_order.nit:147 */
-  fra.me.REG[2] = NEW_PartialOrderElement_metamodel___partial_order___PartialOrderElement___init(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[2];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___add_to_smallests[] = "partial_order::PartialOrder::add_to_smallests";
-val_t metamodel___partial_order___PartialOrder___add_to_smallests(val_t p0, val_t p1, val_t p2, val_t p3){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 150;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___add_to_smallests;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 6;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  fra.me.REG[3] = p3;
-  /* metamodel/partial_order.nit:157 */
-  CALL_standard___collection___abstract_collection___RemovableCollection___clear(fra.me.REG[3])(fra.me.REG[3]);
-  /* metamodel/partial_order.nit:158 */
-  fra.me.REG[0] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-    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:242 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB0)];
-      /* metamodel/partial_order.nit:160 */
-      REGB1 = CALL_metamodel___partial_order___PartialOrderElement_____g(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5]);
-      if (UNTAG_Bool(REGB1)) {
-        /* metamodel/partial_order.nit:161 */
-        REGB1 = TAG_Bool(0);
-        goto label1;
-      }
-      /* metamodel/partial_order.nit:163 */
-      REGB2 = CALL_metamodel___partial_order___PartialOrderElement_____l(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5]);
-      REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
-      if (UNTAG_Bool(REGB2)) {
-        /* metamodel/partial_order.nit:164 */
-        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-      }
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB0 = REGB2;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  /* metamodel/partial_order.nit:167 */
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
-  /* metamodel/partial_order.nit:168 */
-  REGB0 = TAG_Bool(1);
-  REGB1 = REGB0;
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB1;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrder___compute_smallers_for[] = "partial_order::PartialOrder::compute_smallers_for";
-void metamodel___partial_order___PartialOrder___compute_smallers_for(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 171;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___compute_smallers_for;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* metamodel/partial_order.nit:173 */
-  fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[1])(fra.me.REG[1]);
-  /* metamodel/partial_order.nit:174 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_elements", LOCATE_metamodel___partial_order, 174);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___values(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[0])(fra.me.REG[0], (&(fra.me)), ((fun_t)OC_metamodel___partial_order___PartialOrder___compute_smallers_for_1));
-  stack_frame_head = fra.me.prev;
-  return;
-}
-  void OC_metamodel___partial_order___PartialOrder___compute_smallers_for_1(struct stack_frame_t *closctx, val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
-    struct {struct stack_frame_t me;} fra;
-    val_t REGB0;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_metamodel___partial_order;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___compute_smallers_for;
-    fra.me.has_broke = 0;
-    fra.me.REG_size = 1;
-    fra.me.nitni_local_ref_head = NULL;
-    fra.me.REG[0] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* metamodel/partial_order.nit:175 */
-    REGB0 = CALL_metamodel___partial_order___PartialOrderElement_____l(fra.me.REG[0])(fra.me.REG[0], closctx->REG[1]);
-    if (UNTAG_Bool(REGB0)) {
-      /* metamodel/partial_order.nit:176 */
-      fra.me.REG[0] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[0])(fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[2])(closctx->REG[2], fra.me.REG[0]);
-    }
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_metamodel___partial_order___PartialOrder___init[] = "partial_order::PartialOrder::init";
-void metamodel___partial_order___PartialOrder___init(val_t p0, int* init_table){
-  int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_metamodel___partial_order___PartialOrder].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  if (init_table[itpos0]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 181;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrder___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;
-  /* metamodel/partial_order.nit:183 */
-  fra.me.REG[1] = NEW_HashMap_standard___collection___hash_collection___HashMap___init();
-  ATTR_metamodel___partial_order___PartialOrder____elements(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:184 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_metamodel___partial_order___PartialOrder____elements_list(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:185 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_metamodel___partial_order___PartialOrder____roots(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  init_table[itpos0] = 1;
-  return;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___order[] = "partial_order::PartialOrderElement::order";
-val_t metamodel___partial_order___PartialOrderElement___order(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_metamodel___partial_order;
-  fra.me.line = 190;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___order;
-  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;
-  /* metamodel/partial_order.nit:190 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 190);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___value[] = "partial_order::PartialOrderElement::value";
-val_t metamodel___partial_order___PartialOrderElement___value(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_metamodel___partial_order;
-  fra.me.line = 193;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___value;
-  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;
-  /* metamodel/partial_order.nit:193 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 193);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___rank[] = "partial_order::PartialOrderElement::rank";
-val_t metamodel___partial_order___PartialOrderElement___rank(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_metamodel___partial_order;
-  fra.me.line = 196;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___rank;
-  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;
-  /* metamodel/partial_order.nit:196 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____rank(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_rank", LOCATE_metamodel___partial_order, 196);
-  }
-  REGB0 = ATTR_metamodel___partial_order___PartialOrderElement____rank(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___direct_greaters[] = "partial_order::PartialOrderElement::direct_greaters";
-val_t metamodel___partial_order___PartialOrderElement___direct_greaters(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_metamodel___partial_order;
-  fra.me.line = 202;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___direct_greaters;
-  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;
-  /* metamodel/partial_order.nit:202 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____direct_greaters(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_direct_greaters", LOCATE_metamodel___partial_order, 202);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____direct_greaters(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___direct_smallers[] = "partial_order::PartialOrderElement::direct_smallers";
-val_t metamodel___partial_order___PartialOrderElement___direct_smallers(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_metamodel___partial_order;
-  fra.me.line = 205;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___direct_smallers;
-  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;
-  /* metamodel/partial_order.nit:205 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____direct_smallers(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_direct_smallers", LOCATE_metamodel___partial_order, 205);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____direct_smallers(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___greaters[] = "partial_order::PartialOrderElement::greaters";
-val_t metamodel___partial_order___PartialOrderElement___greaters(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_metamodel___partial_order;
-  fra.me.line = 208;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___greaters;
-  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;
-  /* metamodel/partial_order.nit:208 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_greaters", LOCATE_metamodel___partial_order, 208);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___greaters_and_self[] = "partial_order::PartialOrderElement::greaters_and_self";
-val_t metamodel___partial_order___PartialOrderElement___greaters_and_self(val_t p0){
-  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_metamodel___partial_order;
-  fra.me.line = 214;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___greaters_and_self;
-  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;
-  /* metamodel/partial_order.nit:214 */
-  fra.me.REG[1] = fra.me.REG[0];
-  /* metamodel/partial_order.nit:217 */
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____greaters_and_self_cache(fra.me.REG[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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* metamodel/partial_order.nit:218 */
-    REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_greaters", LOCATE_metamodel___partial_order, 218);
-    }
-    fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[1]);
-    fra.me.REG[2] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[2])(fra.me.REG[2]);
-    ATTR_metamodel___partial_order___PartialOrderElement____greaters_and_self_cache(fra.me.REG[1]) = fra.me.REG[2];
-    /* metamodel/partial_order.nit:219 */
-    fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____greaters_and_self_cache(fra.me.REG[1]);
-    REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 219);
-    }
-    fra.me.REG[3] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[1]);
-    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_metamodel___partial_order, 219);
-    }
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  }
-  /* metamodel/partial_order.nit:221 */
-  fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____greaters_and_self_cache(fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_metamodel___partial_order, 221);
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___smallers[] = "partial_order::PartialOrderElement::smallers";
-val_t metamodel___partial_order___PartialOrderElement___smallers(val_t p0){
-  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_metamodel___partial_order;
-  fra.me.line = 230;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___smallers;
-  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;
-  /* metamodel/partial_order.nit:233 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____smallers_last_length(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_smallers_last_length", LOCATE_metamodel___partial_order, 233);
-  }
-  REGB0 = ATTR_metamodel___partial_order___PartialOrderElement____smallers_last_length(fra.me.REG[0]);
-  REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 233);
-  }
-  fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-  REGB1 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[1])(fra.me.REG[1]);
-  REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-  }
-  /* ../lib/standard/kernel.nit:242 */
-  REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-  /* metamodel/partial_order.nit:233 */
-  if (UNTAG_Bool(REGB1)) {
-    /* metamodel/partial_order.nit:234 */
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 234);
-    }
-    fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____smallers_cache(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_smallers_cache", LOCATE_metamodel___partial_order, 234);
-    }
-    fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____smallers_cache(fra.me.REG[0]);
-    CALL_metamodel___partial_order___PartialOrder___compute_smallers_for(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0], fra.me.REG[2]);
-    /* metamodel/partial_order.nit:235 */
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 235);
-    }
-    fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-    REGB1 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[2])(fra.me.REG[2]);
-    ATTR_metamodel___partial_order___PartialOrderElement____smallers_last_length(fra.me.REG[0]) = REGB1;
-  }
-  /* metamodel/partial_order.nit:237 */
-  REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____smallers_cache(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_smallers_cache", LOCATE_metamodel___partial_order, 237);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____smallers_cache(fra.me.REG[0]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___linear_extension[] = "partial_order::PartialOrderElement::linear_extension";
-val_t metamodel___partial_order___PartialOrderElement___linear_extension(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[9];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 243;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___linear_extension;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 10;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[7] = NIT_NULL;
-  fra.me.REG[8] = NIT_NULL;
-  fra.me.REG[9] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* metamodel/partial_order.nit:243 */
-  fra.me.REG[1] = fra.me.REG[0];
-  /* metamodel/partial_order.nit:247 */
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____linear_extension_cache(fra.me.REG[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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* metamodel/partial_order.nit:248 */
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___init();
-    /* metamodel/partial_order.nit:249 */
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___init();
-    /* metamodel/partial_order.nit:250 */
-    fra.me.REG[4] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[1])(fra.me.REG[1]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    /* metamodel/partial_order.nit:251 */
-    fra.me.REG[4] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[1])(fra.me.REG[1]);
-    /* ../lib/standard/collection/array.nit:270 */
-    REGB0 = TAG_Int(0);
-    /* ../lib/standard/collection/array.nit:271 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-    /* ../lib/standard/collection/array.nit:272 */
-    fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[4]);
-    /* ../lib/standard/collection/array.nit:273 */
-    while(1) {
-      /* ../lib/standard/collection/array.nit:24 */
-      REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-      }
-      REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-      REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-      }
-      /* ../lib/standard/kernel.nit:242 */
-      REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:273 */
-      if (UNTAG_Bool(REGB1)) {
-        /* ../lib/standard/collection/array.nit:274 */
-        REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-        if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-        }
-        /* ../lib/standard/collection/array.nit:725 */
-        fra.me.REG[6] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB0)];
-        /* metamodel/partial_order.nit:252 */
-        fra.me.REG[7] = CALL_metamodel___partial_order___PartialOrderElement___order(fra.me.REG[1])(fra.me.REG[1]);
-        fra.me.REG[6] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[6]);
-        fra.me.REG[6] = CALL_metamodel___partial_order___PartialOrderElement___linear_extension(fra.me.REG[6])(fra.me.REG[6]);
-        /* metamodel/partial_order.nit:253 */
-        CALL_standard___collection___abstract_collection___RemovableCollection___clear(fra.me.REG[3])(fra.me.REG[3]);
-        /* ../lib/standard/collection/array.nit:267 */
-        fra.me.REG[7] = fra.me.REG[2];
-        /* ../lib/standard/collection/array.nit:270 */
-        REGB1 = TAG_Int(0);
-        /* ../lib/standard/collection/array.nit:271 */
-        REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-        } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-        }
-        REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-        /* ../lib/standard/collection/array.nit:272 */
-        fra.me.REG[8] = ATTR_standard___collection___array___Array____items(fra.me.REG[7]);
-        /* ../lib/standard/collection/array.nit:273 */
-        while(1) {
-          /* ../lib/standard/collection/array.nit:24 */
-          REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7])!=NIT_NULL);
-          if (UNTAG_Bool(REGB2)) {
-          } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-          }
-          REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[7]);
-          REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-          if (UNTAG_Bool(REGB3)) {
-          } else {
-            nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-          }
-          /* ../lib/standard/kernel.nit:242 */
-          REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-          /* ../lib/standard/collection/array.nit:273 */
-          if (UNTAG_Bool(REGB2)) {
-            /* ../lib/standard/collection/array.nit:274 */
-            REGB2 = TAG_Bool(fra.me.REG[8]==NIT_NULL);
-            if (UNTAG_Bool(REGB2)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-            }
-            /* ../lib/standard/collection/array.nit:725 */
-            fra.me.REG[9] = ((Nit_NativeArray)fra.me.REG[8])->val[UNTAG_Int(REGB1)];
-            /* metamodel/partial_order.nit:255 */
-            REGB2 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[9]);
-            REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
-            if (UNTAG_Bool(REGB2)) {
-              CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[9]);
-            }
-            /* ../lib/standard/collection/array.nit:275 */
-            REGB2 = TAG_Int(1);
-            /* ../lib/standard/kernel.nit:245 */
-            REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-            /* ../lib/standard/collection/array.nit:275 */
-            REGB1 = REGB2;
-          } else {
-            /* ../lib/standard/collection/array.nit:273 */
-            goto label1;
-          }
-        }
-        label1: while(0);
-        /* metamodel/partial_order.nit:257 */
-        CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-        /* metamodel/partial_order.nit:259 */
-        fra.me.REG[6] = fra.me.REG[2];
-        /* metamodel/partial_order.nit:260 */
-        fra.me.REG[2] = fra.me.REG[3];
-        /* metamodel/partial_order.nit:261 */
-        fra.me.REG[3] = fra.me.REG[6];
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB1 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:245 */
-        REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB0 = REGB1;
-      } else {
-        /* ../lib/standard/collection/array.nit:273 */
-        goto label2;
-      }
-    }
-    label2: while(0);
-    /* metamodel/partial_order.nit:263 */
-    ATTR_metamodel___partial_order___PartialOrderElement____linear_extension_cache(fra.me.REG[1]) = fra.me.REG[2];
-  }
-  /* metamodel/partial_order.nit:265 */
-  fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____linear_extension_cache(fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_metamodel___partial_order, 265);
-  }
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___reverse_linear_extension[] = "partial_order::PartialOrderElement::reverse_linear_extension";
-val_t metamodel___partial_order___PartialOrderElement___reverse_linear_extension(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} 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_metamodel___partial_order;
-  fra.me.line = 271;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___reverse_linear_extension;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 7;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* metamodel/partial_order.nit:271 */
-  fra.me.REG[1] = fra.me.REG[0];
-  /* metamodel/partial_order.nit:275 */
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____reverse_linear_extension_cache(fra.me.REG[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;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* metamodel/partial_order.nit:276 */
-    fra.me.REG[2] = NEW_HashSet_standard___collection___hash_collection___HashSet___init();
-    /* metamodel/partial_order.nit:277 */
-    fra.me.REG[3] = CALL_metamodel___partial_order___PartialOrderElement___direct_greaters(fra.me.REG[1])(fra.me.REG[1]);
-    /* ../lib/standard/collection/array.nit:270 */
-    REGB0 = TAG_Int(0);
-    /* ../lib/standard/collection/array.nit:271 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-    /* ../lib/standard/collection/array.nit:272 */
-    fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-    /* ../lib/standard/collection/array.nit:273 */
-    while(1) {
-      /* ../lib/standard/collection/array.nit:24 */
-      REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-      }
-      REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-      REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-      }
-      /* ../lib/standard/kernel.nit:242 */
-      REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:273 */
-      if (UNTAG_Bool(REGB1)) {
-        /* ../lib/standard/collection/array.nit:274 */
-        REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-        if (UNTAG_Bool(REGB1)) {
-          nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-        }
-        /* ../lib/standard/collection/array.nit:725 */
-        fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB0)];
-        /* metamodel/partial_order.nit:278 */
-        fra.me.REG[6] = CALL_metamodel___partial_order___PartialOrderElement___order(fra.me.REG[1])(fra.me.REG[1]);
-        fra.me.REG[5] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[5]);
-        fra.me.REG[5] = CALL_metamodel___partial_order___PartialOrderElement___linear_extension(fra.me.REG[5])(fra.me.REG[5]);
-        /* metamodel/partial_order.nit:279 */
-        CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB1 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:245 */
-        REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-        /* ../lib/standard/collection/array.nit:275 */
-        REGB0 = REGB1;
-      } else {
-        /* ../lib/standard/collection/array.nit:273 */
-        goto label1;
-      }
-    }
-    label1: while(0);
-    /* metamodel/partial_order.nit:281 */
-    fra.me.REG[4] = CALL_metamodel___partial_order___PartialOrderElement___value(fra.me.REG[1])(fra.me.REG[1]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    /* metamodel/partial_order.nit:282 */
-    fra.me.REG[2] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[2])(fra.me.REG[2]);
-    ATTR_metamodel___partial_order___PartialOrderElement____linear_extension_cache(fra.me.REG[1]) = fra.me.REG[2];
-  }
-  /* metamodel/partial_order.nit:284 */
-  fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____linear_extension_cache(fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_metamodel___partial_order, 284);
-  }
-  goto label2;
-  label2: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement_____l[] = "partial_order::PartialOrderElement::<";
-val_t metamodel___partial_order___PartialOrderElement_____l(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 287;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement_____l;
-  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;
-  /* metamodel/partial_order.nit:290 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_greaters", LOCATE_metamodel___partial_order, 290);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0]);
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement_____leq[] = "partial_order::PartialOrderElement::<=";
-val_t metamodel___partial_order___PartialOrderElement_____leq(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_metamodel___partial_order;
-  fra.me.line = 293;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement_____leq;
-  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;
-  /* metamodel/partial_order.nit:296 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 296);
-  }
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]);
-  REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[1]));
-  if (UNTAG_Bool(REGB0)) {
-  } 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);
-  } else {
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_greaters", LOCATE_metamodel___partial_order, 296);
-    }
-    fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0]);
-    REGB1 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    REGB0 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement_____g[] = "partial_order::PartialOrderElement::>";
-val_t metamodel___partial_order___PartialOrderElement_____g(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 299;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement_____g;
-  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;
-  /* metamodel/partial_order.nit:302 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 302);
-  }
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 302);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]);
-  REGB0 = CALL_metamodel___partial_order___PartialOrderElement_____l(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement_____geq[] = "partial_order::PartialOrderElement::>=";
-val_t metamodel___partial_order___PartialOrderElement_____geq(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_metamodel___partial_order;
-  fra.me.line = 305;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement_____geq;
-  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;
-  /* metamodel/partial_order.nit:308 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 308);
-  }
-  fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]);
-  REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[1]));
-  if (UNTAG_Bool(REGB0)) {
-  } 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);
-  } else {
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 308);
-    }
-    fra.me.REG[2] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-    fra.me.REG[1] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-    REGB1 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_value", LOCATE_metamodel___partial_order, 308);
-    }
-    fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]);
-    REGB1 = CALL_metamodel___partial_order___PartialOrderElement_____l(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-    REGB0 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___register_direct_smallers[] = "partial_order::PartialOrderElement::register_direct_smallers";
-void metamodel___partial_order___PartialOrderElement___register_direct_smallers(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 311;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___register_direct_smallers;
-  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;
-  /* metamodel/partial_order.nit:313 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____direct_smallers(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_direct_smallers", LOCATE_metamodel___partial_order, 313);
-  }
-  fra.me.REG[0] = ATTR_metamodel___partial_order___PartialOrderElement____direct_smallers(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_metamodel___partial_order___PartialOrderElement___init[] = "partial_order::PartialOrderElement::init";
-void metamodel___partial_order___PartialOrderElement___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
-  int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_metamodel___partial_order___PartialOrderElement].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  val_t tmp;
-  if (init_table[itpos1]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_metamodel___partial_order;
-  fra.me.line = 316;
-  fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 7;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  fra.me.REG[3] = p3;
-  /* metamodel/partial_order.nit:318 */
-  ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:319 */
-  ATTR_metamodel___partial_order___PartialOrderElement____value(fra.me.REG[0]) = fra.me.REG[2];
-  /* metamodel/partial_order.nit:320 */
-  ATTR_metamodel___partial_order___PartialOrderElement____direct_greaters(fra.me.REG[0]) = fra.me.REG[3];
-  /* metamodel/partial_order.nit:321 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_metamodel___partial_order___PartialOrderElement____direct_smallers(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:323 */
-  fra.me.REG[1] = NEW_HashSet_standard___collection___hash_collection___HashSet___init();
-  ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:324 */
-  fra.me.REG[1] = NEW_HashSet_standard___collection___hash_collection___HashSet___init();
-  ATTR_metamodel___partial_order___PartialOrderElement____smallers_cache(fra.me.REG[0]) = fra.me.REG[1];
-  /* metamodel/partial_order.nit:326 */
-  REGB0 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_greaters", LOCATE_metamodel___partial_order, 326);
-  }
-  fra.me.REG[1] = ATTR_metamodel___partial_order___PartialOrderElement____greaters(fra.me.REG[0]);
-  /* metamodel/partial_order.nit:327 */
-  REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB1 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-    REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB3)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB1)];
-      /* metamodel/partial_order.nit:329 */
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5]);
-      /* metamodel/partial_order.nit:330 */
-      REGB2 = TAG_Bool(ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0])!=NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_order", LOCATE_metamodel___partial_order, 330);
-      }
-      fra.me.REG[6] = ATTR_metamodel___partial_order___PartialOrderElement____order(fra.me.REG[0]);
-      fra.me.REG[5] = CALL_metamodel___partial_order___PartialOrder_____bra(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[5]);
-      /* metamodel/partial_order.nit:331 */
-      REGB2 = CALL_metamodel___partial_order___PartialOrderElement___rank(fra.me.REG[5])(fra.me.REG[5]);
-      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:243 */
-      REGB2 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB0));
-      /* metamodel/partial_order.nit:331 */
-      if (UNTAG_Bool(REGB2)) {
-        /* metamodel/partial_order.nit:332 */
-        REGB2 = CALL_metamodel___partial_order___PartialOrderElement___rank(fra.me.REG[5])(fra.me.REG[5]);
-        REGB3 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:245 */
-        REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-        /* metamodel/partial_order.nit:332 */
-        REGB0 = REGB3;
-      }
-      /* metamodel/partial_order.nit:334 */
-      CALL_metamodel___partial_order___PartialOrderElement___register_direct_smallers(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-      /* metamodel/partial_order.nit:335 */
-      fra.me.REG[5] = CALL_metamodel___partial_order___PartialOrderElement___greaters(fra.me.REG[5])(fra.me.REG[5]);
-      CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[5])(fra.me.REG[5], (&(fra.me)), ((fun_t)OC_metamodel___partial_order___PartialOrderElement___init_1));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB3 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = REGB3;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  /* metamodel/partial_order.nit:339 */
-  ATTR_metamodel___partial_order___PartialOrderElement____rank(fra.me.REG[0]) = REGB0;
-  stack_frame_head = fra.me.prev;
-  init_table[itpos1] = 1;
-  return;
-}
-      void OC_metamodel___partial_order___PartialOrderElement___init_1(struct stack_frame_t *closctx, 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_metamodel___partial_order;
-        fra.me.line = 0;
-        fra.me.meth = LOCATE_metamodel___partial_order___PartialOrderElement___init;
-        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;
-        /* metamodel/partial_order.nit:336 */
-        CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[1])(closctx->REG[1], fra.me.REG[0]);
-        stack_frame_head = fra.me.prev;
-        return;
-      }