use nitg to bootstrap; drop bootstrap of nitc

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

diff --git a/c_src/native_interface___frontier._sep.c b/c_src/native_interface___frontier._sep.c
deleted file mode 100644 (file)
index 365adaa..0000000
--- a/c_src/native_interface___frontier._sep.c
+++ /dev/null
@@ -1,6108 +0,0 @@
-/* This C file is generated by NIT to compile module native_interface___frontier. */
-#include "native_interface___frontier._sep.h"
-static const char LOCATE_native_interface___frontier___NiVariable___ni_from_name[] = "frontier::NiVariable::ni_from_name";
-val_t native_interface___frontier___NiVariable___ni_from_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 30;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___ni_from_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 0;
-  fra.me.nitni_local_ref_head = NULL;
-  /* native_interface/frontier.nit:30 */
-  nit_abort("Deferred method called", NULL, LOCATE_native_interface___frontier, 30);
-  stack_frame_head = fra.me.prev;
-  return NIT_NULL;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___ni_to_name[] = "frontier::NiVariable::ni_to_name";
-val_t native_interface___frontier___NiVariable___ni_to_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 31;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___ni_to_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 0;
-  fra.me.nitni_local_ref_head = NULL;
-  /* native_interface/frontier.nit:31 */
-  nit_abort("Deferred method called", NULL, LOCATE_native_interface___frontier, 31);
-  stack_frame_head = fra.me.prev;
-  return NIT_NULL;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___ni_type[] = "frontier::NiVariable::ni_type";
-val_t native_interface___frontier___NiVariable___ni_type(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 32;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___ni_type;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 0;
-  fra.me.nitni_local_ref_head = NULL;
-  /* native_interface/frontier.nit:32 */
-  nit_abort("Deferred method called", NULL, LOCATE_native_interface___frontier, 32);
-  stack_frame_head = fra.me.prev;
-  return NIT_NULL;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___needs_preparation[] = "frontier::NiVariable::needs_preparation";
-val_t native_interface___frontier___NiVariable___needs_preparation(val_t p0){
-  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_native_interface___frontier;
-  fra.me.line = 34;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___needs_preparation;
-  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;
-  /* native_interface/frontier.nit:38 */
-  fra.me.REG[1] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[1] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(1);
-  } else {
-    /* native_interface/frontier.nit:39 */
-    fra.me.REG[1] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[1] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[1] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[1])(fra.me.REG[1]);
-    REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 39);
-    }
-    REGB1 = CALL_primitive_info___PrimitiveInfo___tagged(fra.me.REG[1])(fra.me.REG[1]);
-    REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-    /* native_interface/frontier.nit:38 */
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(1);
-  } else {
-    /* native_interface/frontier.nit:40 */
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    REGB1 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[0])(fra.me.REG[0]);
-    /* native_interface/frontier.nit:38 */
-    REGB0 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___prepare_for_nit[] = "frontier::NiVariable::prepare_for_nit";
-void native_interface___frontier___NiVariable___prepare_for_nit(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} 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 */
-    static val_t once_value_4; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 43;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___prepare_for_nit;
-  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;
-  /* native_interface/frontier.nit:46 */
-  REGB0 = CALL_native_interface___frontier___NiVariable___needs_preparation(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:47 */
-    fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_1) {
-      fra.me.REG[4] = BOX_NativeString("val_t ");
-      REGB0 = TAG_Int(6);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_1 = fra.me.REG[4];
-      register_static_object(&once_value_1);
-    } else fra.me.REG[4] = once_value_1;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_2) {
-      fra.me.REG[4] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_2 = fra.me.REG[4];
-      register_static_object(&once_value_2);
-    } else fra.me.REG[4] = once_value_2;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    /* native_interface/frontier.nit:48 */
-    fra.me.REG[1] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_3) {
-      fra.me.REG[2] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      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[3])(fra.me.REG[3], fra.me.REG[2]);
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[4] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___ni_metamodel___MMType___assign_from_friendly(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4], fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-    if (!once_value_4) {
-      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_4 = fra.me.REG[0];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[0] = once_value_4;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___prepare_for_c[] = "frontier::NiVariable::prepare_for_c";
-void native_interface___frontier___NiVariable___prepare_for_c(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} 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_native_interface___frontier;
-  fra.me.line = 52;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___prepare_for_c;
-  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;
-  /* native_interface/frontier.nit:54 */
-  REGB0 = CALL_native_interface___frontier___NiVariable___needs_preparation(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:55 */
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[0], COLOR_native_interface___frontier___ReturnVariable, ID_native_interface___frontier___ReturnVariable)) /*cast ReturnVariable*/;
-    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-    CALL_native_interface___frontier___MMType___compile_new_local_ref(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1], REGB0);
-    /* native_interface/frontier.nit:56 */
-    fra.me.REG[1] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_1) {
-      fra.me.REG[2] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      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[3])(fra.me.REG[3], fra.me.REG[2]);
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[4] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___ni_metamodel___MMType___assign_to_friendly(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4], fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-    if (!once_value_2) {
-      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_2 = fra.me.REG[0];
-      register_static_object(&once_value_2);
-    } else fra.me.REG[0] = once_value_2;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___NiVariable___as_arg_to_nit[] = "frontier::NiVariable::as_arg_to_nit";
-val_t native_interface___frontier___NiVariable___as_arg_to_nit(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-      static val_t once_value_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_native_interface___frontier;
-  fra.me.line = 60;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___as_arg_to_nit;
-  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;
-  /* native_interface/frontier.nit:63 */
-  REGB0 = CALL_native_interface___frontier___NiVariable___needs_preparation(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:64 */
-    fra.me.REG[1] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    goto label1;
-  } else {
-    /* native_interface/frontier.nit:65 */
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-    fra.me.REG[2] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(0);
-        REGB0 = REGB1;
-      } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
-        REGB0 = REGB1;
-      }
-    }
-    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-    if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(1);
-    } else {
-      fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-      fra.me.REG[2] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[2])(fra.me.REG[2]);
-      fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMLocalClass___global(fra.me.REG[2])(fra.me.REG[2]);
-      REGB1 = CALL_metamodel___abstractmetamodel___MMGlobalClass___is_extern(fra.me.REG[2])(fra.me.REG[2]);
-      REGB0 = REGB1;
-    }
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:66 */
-      fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-      REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[2])(fra.me.REG[2]);
-      REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-    } else {
-      /* native_interface/frontier.nit:65 */
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    }
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:67 */
-      fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-      fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-      fra.me.REG[3] = CALL_primitive_info___MMType___boxtype(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-      fra.me.REG[1] = fra.me.REG[3];
-      goto label1;
-    } else {
-      /* native_interface/frontier.nit:69 */
-      REGB0 = TAG_Int(3);
-      fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_2) {
-        fra.me.REG[2] = BOX_NativeString("");
-        REGB0 = TAG_Int(0);
-        fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-        once_value_2 = fra.me.REG[2];
-        register_static_object(&once_value_2);
-      } else fra.me.REG[2] = once_value_2;
-      fra.me.REG[2] = fra.me.REG[2];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-      fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-      if (!once_value_3) {
-        fra.me.REG[0] = BOX_NativeString("->ref.val");
-        REGB0 = TAG_Int(9);
-        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___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-      fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-      fra.me.REG[1] = fra.me.REG[3];
-      goto label1;
-    }
-  }
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_native_interface___frontier___NiVariable___as_arg_to_c[] = "frontier::NiVariable::as_arg_to_c";
-val_t native_interface___frontier___NiVariable___as_arg_to_c(val_t p0){
-  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_native_interface___frontier;
-  fra.me.line = 73;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___as_arg_to_c;
-  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;
-  /* native_interface/frontier.nit:76 */
-  REGB0 = CALL_native_interface___frontier___NiVariable___needs_preparation(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:77 */
-    fra.me.REG[1] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-    goto label1;
-  } else {
-    /* native_interface/frontier.nit:79 */
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_primitive_info___MMType___unboxtype(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-    fra.me.REG[1] = fra.me.REG[0];
-    goto label1;
-  }
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_native_interface___frontier___NiVariable___init[] = "frontier::NiVariable::init";
-void native_interface___frontier___NiVariable___init(val_t p0, int* init_table){
-  int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_native_interface___frontier___NiVariable].i;
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  if (init_table[itpos0]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 0;
-  fra.me.meth = LOCATE_native_interface___frontier___NiVariable___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 0;
-  fra.me.nitni_local_ref_head = NULL;
-  stack_frame_head = fra.me.prev;
-  init_table[itpos0] = 1;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMParam___ni_from_name[] = "frontier::MMParam::(frontier::NiVariable::ni_from_name)";
-val_t native_interface___frontier___MMParam___ni_from_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 87;
-  fra.me.meth = LOCATE_native_interface___frontier___MMParam___ni_from_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:87 */
-  fra.me.REG[0] = CALL_metamodel___static_type___MMParam___name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(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_native_interface___frontier___MMParam___ni_to_name[] = "frontier::MMParam::(frontier::NiVariable::ni_to_name)";
-val_t native_interface___frontier___MMParam___ni_to_name(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_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_native_interface___frontier;
-  fra.me.line = 88;
-  fra.me.meth = LOCATE_native_interface___frontier___MMParam___ni_to_name;
-  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;
-  /* native_interface/frontier.nit:88 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[2] = BOX_NativeString("trans___");
-    REGB0 = TAG_Int(8);
-    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[1])(fra.me.REG[1], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMParam___name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  if (!once_value_2) {
-    fra.me.REG[0] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_2 = fra.me.REG[0];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[0] = once_value_2;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_native_interface___frontier___MMParam___ni_type[] = "frontier::MMParam::(frontier::NiVariable::ni_type)";
-val_t native_interface___frontier___MMParam___ni_type(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 89;
-  fra.me.meth = LOCATE_native_interface___frontier___MMParam___ni_type;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:89 */
-  fra.me.REG[0] = CALL_metamodel___static_type___MMParam___mmtype(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_native_interface___frontier___ReceiverVariable___ni_from_name[] = "frontier::ReceiverVariable::(frontier::NiVariable::ni_from_name)";
-val_t native_interface___frontier___ReceiverVariable___ni_from_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 95;
-  fra.me.meth = LOCATE_native_interface___frontier___ReceiverVariable___ni_from_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:95 */
-  if (!once_value_1) {
-    fra.me.REG[0] = BOX_NativeString("recv");
-    REGB0 = TAG_Int(4);
-    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_native_interface___frontier___ReceiverVariable___ni_to_name[] = "frontier::ReceiverVariable::(frontier::NiVariable::ni_to_name)";
-val_t native_interface___frontier___ReceiverVariable___ni_to_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 96;
-  fra.me.meth = LOCATE_native_interface___frontier___ReceiverVariable___ni_to_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:96 */
-  if (!once_value_1) {
-    fra.me.REG[0] = BOX_NativeString("trans_recv");
-    REGB0 = TAG_Int(10);
-    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_native_interface___frontier___ReceiverVariable___ni_type[] = "frontier::ReceiverVariable::(frontier::NiVariable::ni_type)";
-val_t native_interface___frontier___ReceiverVariable___ni_type(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_native_interface___frontier;
-  fra.me.line = 98;
-  fra.me.meth = LOCATE_native_interface___frontier___ReceiverVariable___ni_type;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:98 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___ReceiverVariable_____atni_type(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@ni_type", LOCATE_native_interface___frontier, 98);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___ReceiverVariable_____atni_type(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___ReceiverVariable___ni_type__eq[] = "frontier::ReceiverVariable::ni_type=";
-void native_interface___frontier___ReceiverVariable___ni_type__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 98;
-  fra.me.meth = LOCATE_native_interface___frontier___ReceiverVariable___ni_type__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:98 */
-  ATTR_native_interface___frontier___ReceiverVariable_____atni_type(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___ReceiverVariable___init[] = "frontier::ReceiverVariable::init";
-void native_interface___frontier___ReceiverVariable___init(val_t p0, val_t p1, int* init_table){
-  int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_native_interface___frontier___ReceiverVariable].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t tmp;
-  if (init_table[itpos1]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 99;
-  fra.me.meth = LOCATE_native_interface___frontier___ReceiverVariable___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:99 */
-  fra.me.REG[2] = fra.me.REG[0];
-  CALL_native_interface___frontier___NiVariable___init(fra.me.REG[0])(fra.me.REG[0], init_table);
-  CALL_native_interface___frontier___ReceiverVariable___ni_type__eq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos1] = 1;
-  return;
-}
-static const char LOCATE_native_interface___frontier___ReturnVariable___ni_from_name[] = "frontier::ReturnVariable::(frontier::NiVariable::ni_from_name)";
-val_t native_interface___frontier___ReturnVariable___ni_from_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 105;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___ni_from_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:105 */
-  if (!once_value_1) {
-    fra.me.REG[0] = BOX_NativeString("orig_return");
-    REGB0 = TAG_Int(11);
-    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_native_interface___frontier___ReturnVariable___ni_to_name[] = "frontier::ReturnVariable::(frontier::NiVariable::ni_to_name)";
-val_t native_interface___frontier___ReturnVariable___ni_to_name(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 106;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___ni_to_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:106 */
-  if (!once_value_1) {
-    fra.me.REG[0] = BOX_NativeString("trans_return");
-    REGB0 = TAG_Int(12);
-    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_native_interface___frontier___ReturnVariable___ni_type[] = "frontier::ReturnVariable::(frontier::NiVariable::ni_type)";
-val_t native_interface___frontier___ReturnVariable___ni_type(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_native_interface___frontier;
-  fra.me.line = 108;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___ni_type;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:108 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___ReturnVariable_____atni_type(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@ni_type", LOCATE_native_interface___frontier, 108);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___ReturnVariable_____atni_type(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___ReturnVariable___ni_type__eq[] = "frontier::ReturnVariable::ni_type=";
-void native_interface___frontier___ReturnVariable___ni_type__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 108;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___ni_type__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:108 */
-  ATTR_native_interface___frontier___ReturnVariable_____atni_type(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___ReturnVariable___init[] = "frontier::ReturnVariable::init";
-void native_interface___frontier___ReturnVariable___init(val_t p0, val_t p1, int* init_table){
-  int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_native_interface___frontier___ReturnVariable].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t tmp;
-  if (init_table[itpos2]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 109;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:109 */
-  fra.me.REG[2] = fra.me.REG[0];
-  CALL_native_interface___frontier___NiVariable___init(fra.me.REG[0])(fra.me.REG[0], init_table);
-  CALL_native_interface___frontier___ReturnVariable___ni_type__eq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos2] = 1;
-  return;
-}
-static const char LOCATE_native_interface___frontier___ReturnVariable___prepare_for_c[] = "frontier::ReturnVariable::(frontier::NiVariable::prepare_for_c)";
-void native_interface___frontier___ReturnVariable___prepare_for_c(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} 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_native_interface___frontier;
-  fra.me.line = 111;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___prepare_for_c;
-  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;
-  /* native_interface/frontier.nit:114 */
-  fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[4] = BOX_NativeString("val_t ");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_1 = fra.me.REG[4];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[4] = once_value_1;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_2) {
-    fra.me.REG[4] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_2 = fra.me.REG[4];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[4] = once_value_2;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:115 */
-  fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(1);
-  CALL_native_interface___frontier___MMType___compile_new_local_ref(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0], fra.me.REG[1], REGB0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___ReturnVariable___prepare_for_nit[] = "frontier::ReturnVariable::(frontier::NiVariable::prepare_for_nit)";
-void native_interface___frontier___ReturnVariable___prepare_for_nit(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  static val_t once_value_2; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 117;
-  fra.me.meth = LOCATE_native_interface___frontier___ReturnVariable___prepare_for_nit;
-  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;
-  /* native_interface/frontier.nit:119 */
-  fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(0);
-  CALL_native_interface___frontier___MMType___compile_new_local_ref(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[1], REGB0);
-  /* native_interface/frontier.nit:120 */
-  fra.me.REG[1] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[2] = BOX_NativeString("val_t ");
-    REGB0 = TAG_Int(6);
-    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[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  if (!once_value_2) {
-    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_2 = fra.me.REG[0];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[0] = once_value_2;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMSrcModule___compile_frontier[] = "frontier::MMSrcModule::compile_frontier";
-void native_interface___frontier___MMSrcModule___compile_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} 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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  static val_t once_value_8; /* Once value */
-  static val_t once_value_9; /* Once value */
-  static val_t once_value_10; /* Once value */
-  static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-  static val_t once_value_13; /* Once value */
-  static val_t once_value_14; /* Once value */
-    static val_t once_value_15; /* Once value */
-    static val_t once_value_16; /* Once value */
-    static val_t once_value_17; /* Once value */
-    static val_t once_value_18; /* Once value */
-    static val_t once_value_19; /* Once value */
-    static val_t once_value_20; /* Once value */
-    static val_t once_value_21; /* Once value */
-    static val_t once_value_22; /* Once value */
-    static val_t once_value_23; /* Once value */
-    static val_t once_value_24; /* Once value */
-  static val_t once_value_27; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 125;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSrcModule___compile_frontier;
-  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;
-  /* native_interface/frontier.nit:129 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[4] = BOX_NativeString("#include \"");
-    REGB0 = TAG_Int(10);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_1 = fra.me.REG[4];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[4] = once_value_1;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMModule___name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_2) {
-    fra.me.REG[4] = BOX_NativeString("._nitni.h\"\n");
-    REGB0 = TAG_Int(11);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_2 = fra.me.REG[4];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[4] = once_value_2;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:132 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_3) {
-    fra.me.REG[2] = BOX_NativeString("#include <nit_common.h>\n");
-    REGB0 = TAG_Int(24);
-    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_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:133 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_4) {
-    fra.me.REG[4] = BOX_NativeString("#include \"");
-    REGB0 = TAG_Int(10);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_4 = fra.me.REG[4];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[4] = once_value_4;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___cprogram(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_compiling___compiling_base___CProgram___module_header_name(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_5) {
-    fra.me.REG[4] = BOX_NativeString("\"\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_5 = fra.me.REG[4];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[4] = once_value_5;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:135 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_6) {
-    fra.me.REG[2] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_6 = fra.me.REG[2];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[2] = once_value_6;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMModule___name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  fra.me.REG[2] = CALL_standard___string___AbstractString___to_upper(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  if (!once_value_7) {
-    fra.me.REG[2] = BOX_NativeString("_NITNI_H");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_7 = fra.me.REG[2];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[2] = once_value_7;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  /* native_interface/frontier.nit:136 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_8) {
-    fra.me.REG[5] = BOX_NativeString("#ifndef ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_8 = fra.me.REG[5];
-    register_static_object(&once_value_8);
-  } else fra.me.REG[5] = once_value_8;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  if (!once_value_9) {
-    fra.me.REG[5] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_9 = fra.me.REG[5];
-    register_static_object(&once_value_9);
-  } else fra.me.REG[5] = once_value_9;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  /* native_interface/frontier.nit:137 */
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_10) {
-    fra.me.REG[5] = BOX_NativeString("#define ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_10 = fra.me.REG[5];
-    register_static_object(&once_value_10);
-  } else fra.me.REG[5] = once_value_10;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  if (!once_value_11) {
-    fra.me.REG[3] = BOX_NativeString("\n\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_11 = fra.me.REG[3];
-    register_static_object(&once_value_11);
-  } else fra.me.REG[3] = once_value_11;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  /* native_interface/frontier.nit:140 */
-  REGB0 = TAG_Int(5);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_12) {
-    fra.me.REG[4] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_12 = fra.me.REG[4];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[4] = once_value_12;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMModule___directory(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMDirectory___path(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_13) {
-    fra.me.REG[4] = BOX_NativeString("/");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_13 = fra.me.REG[4];
-    register_static_object(&once_value_13);
-  } else fra.me.REG[4] = once_value_13;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMModule___name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_14) {
-    fra.me.REG[4] = BOX_NativeString(".nit.h");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_14 = fra.me.REG[4];
-    register_static_object(&once_value_14);
-  } else fra.me.REG[4] = once_value_14;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  /* native_interface/frontier.nit:141 */
-  REGB0 = CALL_standard___file___String___file_exists(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:142 */
-    REGB0 = TAG_Int(5);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_15) {
-      fra.me.REG[3] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_15 = fra.me.REG[3];
-      register_static_object(&once_value_15);
-    } else fra.me.REG[3] = once_value_15;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMModule___directory(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMDirectory___path(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    if (!once_value_16) {
-      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_16 = fra.me.REG[3];
-      register_static_object(&once_value_16);
-    } else fra.me.REG[3] = once_value_16;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMModule___name(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    if (!once_value_17) {
-      fra.me.REG[3] = BOX_NativeString("_nit.h");
-      REGB0 = TAG_Int(6);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_17 = fra.me.REG[3];
-      register_static_object(&once_value_17);
-    } else fra.me.REG[3] = once_value_17;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    fra.me.REG[2] = fra.me.REG[4];
-  }
-  /* native_interface/frontier.nit:144 */
-  REGB0 = CALL_standard___file___String___file_exists(fra.me.REG[2])(fra.me.REG[2]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:145 */
-    if (!once_value_18) {
-      fra.me.REG[4] = BOX_NativeString("..");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_18 = fra.me.REG[4];
-      register_static_object(&once_value_18);
-    } else fra.me.REG[4] = once_value_18;
-    fra.me.REG[4] = fra.me.REG[4];
-    fra.me.REG[2] = CALL_standard___file___String___join_path(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    fra.me.REG[2] = CALL_standard___file___String___simplify_path(fra.me.REG[2])(fra.me.REG[2]);
-    /* native_interface/frontier.nit:146 */
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_19) {
-      fra.me.REG[5] = BOX_NativeString("#include \"");
-      REGB0 = TAG_Int(10);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_19 = fra.me.REG[5];
-      register_static_object(&once_value_19);
-    } else fra.me.REG[5] = once_value_19;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    if (!once_value_20) {
-      fra.me.REG[5] = BOX_NativeString("\"\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_20 = fra.me.REG[5];
-      register_static_object(&once_value_20);
-    } else fra.me.REG[5] = once_value_20;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    /* native_interface/frontier.nit:147 */
-    fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_21) {
-      fra.me.REG[5] = BOX_NativeString("#include \"");
-      REGB0 = TAG_Int(10);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_21 = fra.me.REG[5];
-      register_static_object(&once_value_21);
-    } else fra.me.REG[5] = once_value_21;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    if (!once_value_22) {
-      fra.me.REG[2] = BOX_NativeString("\"\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_22 = fra.me.REG[2];
-      register_static_object(&once_value_22);
-    } else fra.me.REG[2] = once_value_22;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  }
-  /* native_interface/frontier.nit:149 */
-  REGB0 = CALL_metamodel___abstractmetamodel___MMModule___uses_ffi(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:150 */
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_23) {
-      fra.me.REG[2] = BOX_NativeString("#include <");
-      REGB0 = TAG_Int(10);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_23 = fra.me.REG[2];
-      register_static_object(&once_value_23);
-    } else fra.me.REG[2] = once_value_23;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    fra.me.REG[2] = CALL_compiling___compiling_base___MMModule___cname(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    if (!once_value_24) {
-      fra.me.REG[2] = BOX_NativeString("._ffi.h>\n");
-      REGB0 = TAG_Int(9);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_24 = fra.me.REG[2];
-      register_static_object(&once_value_24);
-    } else fra.me.REG[2] = once_value_24;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  }
-  /* native_interface/frontier.nit:153 */
-  fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMModule___local_classes(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[3])(fra.me.REG[3], (&(fra.me)), ((fun_t)OC_native_interface___frontier___MMSrcModule___compile_frontier_25));
-  /* native_interface/frontier.nit:165 */
-  CALL_native_interface___frontier___FrontierVisitor___compile_cached(fra.me.REG[1])(fra.me.REG[1]);
-  /* native_interface/frontier.nit:167 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_27) {
-    fra.me.REG[0] = BOX_NativeString("#endif\n");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_27 = fra.me.REG[0];
-    register_static_object(&once_value_27);
-  } else fra.me.REG[0] = once_value_27;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-  void OC_native_interface___frontier___MMSrcModule___compile_frontier_25(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;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___MMSrcModule___compile_frontier;
-    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;
-    /* native_interface/frontier.nit:155 */
-    fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMLocalClass___local_local_properties(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[0])(fra.me.REG[0], closctx, ((fun_t)OC_native_interface___frontier___MMSrcModule___compile_frontier_26));
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-    void OC_native_interface___frontier___MMSrcModule___compile_frontier_26(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[1];} fra;
-      val_t REGB0;
-      val_t REGB1;
-      fun_t CREG[1];
-      val_t tmp;
-      fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-      fra.me.file = LOCATE_native_interface___frontier;
-      fra.me.line = 0;
-      fra.me.meth = LOCATE_native_interface___frontier___MMSrcModule___compile_frontier;
-      fra.me.has_broke = 0;
-      fra.me.REG_size = 2;
-      fra.me.nitni_local_ref_head = NULL;
-      fra.me.REG[0] = NIT_NULL;
-      fra.me.REG[1] = NIT_NULL;
-      fra.me.closure_ctx = closctx_param;
-      fra.me.closure_funs = CREG;
-      fra.me.REG[0] = p0;
-      CREG[0] = clos_fun0;
-      /* native_interface/frontier.nit:158 */
-      fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[0])(fra.me.REG[0]);
-      REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[1],closctx->REG[0]));
-      if (UNTAG_Bool(REGB0)) {
-      } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], closctx->REG[0]);
-        REGB0 = REGB1;
-      }
-      if (UNTAG_Bool(REGB0)) {
-        /* native_interface/frontier.nit:159 */
-        REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[0], COLOR_syntax___syntax_base___MMSrcMethod, ID_syntax___syntax_base___MMSrcMethod)) /*cast MMSrcMethod*/;
-      } else {
-        /* native_interface/frontier.nit:158 */
-        REGB1 = TAG_Bool(0);
-        REGB0 = REGB1;
-      }
-      if (UNTAG_Bool(REGB0)) {
-        /* native_interface/frontier.nit:159 */
-        REGB0 = CALL_metamodel___abstractmetamodel___MMMethod___is_extern(fra.me.REG[0])(fra.me.REG[0]);
-      } else {
-        /* native_interface/frontier.nit:158 */
-        REGB1 = TAG_Bool(0);
-        REGB0 = REGB1;
-      }
-      if (UNTAG_Bool(REGB0)) {
-        /* native_interface/frontier.nit:160 */
-        CALL_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier(fra.me.REG[0])(fra.me.REG[0], closctx->REG[1]);
-      }
-      stack_frame_head = fra.me.prev;
-      return;
-    }
-static const char LOCATE_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier[] = "frontier::MMSrcMethod::compile_extern_to_frontier";
-void native_interface___frontier___MMSrcMethod___compile_extern_to_frontier(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_native_interface___frontier;
-  fra.me.line = 172;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier;
-  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;
-  /* native_interface/frontier.nit:175 */
-  fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:176 */
-    fra.me.REG[2] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 176);
-    }
-    CALL_native_interface___frontier___MMSignature___compile_frontier(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  }
-  /* native_interface/frontier.nit:179 */
-  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMMethod___explicit_imports(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[2])(fra.me.REG[2], (&(fra.me)), ((fun_t)OC_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier_1));
-  /* native_interface/frontier.nit:188 */
-  fra.me.REG[2] = CALL_metamodel___static_type___MMMethod___explicit_casts(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[2])(fra.me.REG[2], (&(fra.me)), ((fun_t)OC_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier_2));
-  /* native_interface/frontier.nit:196 */
-  REGB0 = CALL_metamodel___abstractmetamodel___MMLocalProperty___need_super(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:197 */
-    CALL_native_interface___frontier___MMSrcMethod___compile_super_to_frontier(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  }
-  /* native_interface/frontier.nit:201 */
-  CALL_native_interface___frontier___MMSrcMethod___compile_out_to_frontier(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-  void OC_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier_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[1];} fra;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier;
-    fra.me.has_broke = 0;
-    fra.me.REG_size = 2;
-    fra.me.nitni_local_ref_head = NULL;
-    fra.me.REG[0] = NIT_NULL;
-    fra.me.REG[1] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* native_interface/frontier.nit:181 */
-    fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___friendlys(closctx->REG[1])(closctx->REG[1]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-    /* native_interface/frontier.nit:184 */
-    fra.me.REG[0] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_native_interface___frontier___MMSignature___compile_frontier(fra.me.REG[0])(fra.me.REG[0], closctx->REG[1]);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-  void OC_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier_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; val_t MORE_REG[2];} fra;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_extern_to_frontier;
-    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.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* native_interface/frontier.nit:189 */
-    fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___casts(closctx->REG[1])(closctx->REG[1]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-    /* native_interface/frontier.nit:191 */
-    fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___types(closctx->REG[1])(closctx->REG[1]);
-    fra.me.REG[2] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_metamodel___type_formal___MMType___direct_type(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-    /* native_interface/frontier.nit:192 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___types(closctx->REG[1])(closctx->REG[1]);
-    fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_metamodel___type_formal___MMType___direct_type(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_native_interface___frontier___MMSrcMethod___compile_super_to_frontier[] = "frontier::MMSrcMethod::compile_super_to_frontier";
-void native_interface___frontier___MMSrcMethod___compile_super_to_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  static val_t once_value_8; /* Once value */
-  static val_t once_value_9; /* Once value */
-  static val_t once_value_10; /* Once value */
-  static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-    static val_t once_value_15; /* Once value */
-    static val_t once_value_16; /* Once value */
-  static val_t once_value_17; /* Once value */
-  static val_t once_value_18; /* Once value */
-  static val_t once_value_19; /* Once value */
-  static val_t once_value_20; /* Once value */
-  static val_t once_value_21; /* Once value */
-  static val_t once_value_22; /* Once value */
-    static val_t once_value_23; /* Once value */
-    static val_t once_value_24; /* Once value */
-    static val_t once_value_25; /* Once value */
-    static val_t once_value_26; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 204;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_super_to_frontier;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 8;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[7] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:211 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[4] = BOX_NativeString("\n/* friendly for super of ");
-    REGB0 = TAG_Int(26);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_1 = fra.me.REG[4];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[4] = once_value_1;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_2) {
-    fra.me.REG[4] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_2 = fra.me.REG[4];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[4] = once_value_2;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:212 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[4] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_3 = fra.me.REG[4];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[4] = once_value_3;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___frontier_super_csignature_from(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_4) {
-    fra.me.REG[4] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_4 = fra.me.REG[4];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[4] = once_value_4;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:215 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_5) {
-    fra.me.REG[4] = BOX_NativeString("#ifndef ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_5 = fra.me.REG[4];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[4] = once_value_5;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___friendly_super_cname(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_6) {
-    fra.me.REG[4] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_6 = fra.me.REG[4];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[4] = once_value_6;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:216 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_7) {
-    fra.me.REG[4] = BOX_NativeString("#define ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_7 = fra.me.REG[4];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[4] = once_value_7;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___friendly_super_cname(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_8) {
-    fra.me.REG[4] = BOX_NativeString(" ");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_8 = fra.me.REG[4];
-    register_static_object(&once_value_8);
-  } else fra.me.REG[4] = once_value_8;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___mmmodule(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___local_friendly_super_name_from(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_9) {
-    fra.me.REG[4] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_9 = fra.me.REG[4];
-    register_static_object(&once_value_9);
-  } else fra.me.REG[4] = once_value_9;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:217 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_10) {
-    fra.me.REG[3] = BOX_NativeString("#endif\n");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_10 = fra.me.REG[3];
-    register_static_object(&once_value_10);
-  } else fra.me.REG[3] = once_value_10;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:220 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_11) {
-    fra.me.REG[4] = BOX_NativeString("\n/* friendly for super of ");
-    REGB0 = TAG_Int(26);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_11 = fra.me.REG[4];
-    register_static_object(&once_value_11);
-  } else fra.me.REG[4] = once_value_11;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_12) {
-    fra.me.REG[4] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_12 = fra.me.REG[4];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[4] = once_value_12;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:221 */
-  fra.me.REG[2] = CALL_native_interface___ni_metamodel___MMMethod___friendly_super_csignature(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[2] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[2]);
-  /* native_interface/frontier.nit:224 */
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___init();
-  /* native_interface/frontier.nit:225 */
-  fra.me.REG[4] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 225);
-  }
-  fra.me.REG[4] = CALL_native_interface___frontier___MMSignature___recv_ni_variable(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:226 */
-  fra.me.REG[4] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 226);
-  }
-  fra.me.REG[4] = CALL_metamodel___static_type___MMSignature___params(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* ../lib/standard/collection/array.nit:267 */
-  fra.me.REG[4] = fra.me.REG[3];
-  /* ../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)];
-      /* native_interface/frontier.nit:229 */
-      CALL_native_interface___frontier___NiVariable___prepare_for_nit(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[2]);
-      /* ../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 label13;
-    }
-  }
-  label13: while(0);
-  /* native_interface/frontier.nit:232 */
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___init();
-  /* ../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[6] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB0)];
-      /* native_interface/frontier.nit:233 */
-      fra.me.REG[6] = CALL_native_interface___frontier___NiVariable___as_arg_to_nit(fra.me.REG[6])(fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], 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 label14;
-    }
-  }
-  label14: while(0);
-  /* native_interface/frontier.nit:236 */
-  fra.me.REG[4] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 236);
-  }
-  fra.me.REG[4] = CALL_native_interface___frontier___MMSignature___return_ni_variable(fra.me.REG[4])(fra.me.REG[4]);
-  /* native_interface/frontier.nit:237 */
-  fra.me.REG[3] = NEW_Buffer_standard___string___Buffer___init();
-  /* native_interface/frontier.nit:238 */
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:239 */
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 239);
-    }
-    CALL_native_interface___frontier___NiVariable___prepare_for_c(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    /* native_interface/frontier.nit:240 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_15) {
-      fra.me.REG[7] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_15 = fra.me.REG[7];
-      register_static_object(&once_value_15);
-    } else fra.me.REG[7] = once_value_15;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 240);
-    }
-    fra.me.REG[7] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_16) {
-      fra.me.REG[7] = BOX_NativeString(" = ");
-      REGB0 = TAG_Int(3);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_16 = fra.me.REG[7];
-      register_static_object(&once_value_16);
-    } else fra.me.REG[7] = once_value_16;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  }
-  /* native_interface/frontier.nit:243 */
-  REGB0 = TAG_Int(5);
-  fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_17) {
-    fra.me.REG[7] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-    once_value_17 = fra.me.REG[7];
-    register_static_object(&once_value_17);
-  } else fra.me.REG[7] = once_value_17;
-  fra.me.REG[7] = fra.me.REG[7];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-  fra.me.REG[7] = CALL_compiling___compiling_base___MMLocalProperty___super_meth_call(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-  if (!once_value_18) {
-    fra.me.REG[7] = BOX_NativeString("( ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-    once_value_18 = fra.me.REG[7];
-    register_static_object(&once_value_18);
-  } else fra.me.REG[7] = once_value_18;
-  fra.me.REG[7] = fra.me.REG[7];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 243);
-  }
-  fra.me.REG[0] = CALL_native_interface___frontier___MMSignature___recv_ni_variable(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___as_arg_to_nit(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-  if (!once_value_19) {
-    fra.me.REG[0] = BOX_NativeString(" )");
-    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_19 = fra.me.REG[0];
-    register_static_object(&once_value_19);
-  } else fra.me.REG[0] = once_value_19;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-  fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  /* native_interface/frontier.nit:244 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_20) {
-    fra.me.REG[0] = BOX_NativeString("( ");
-    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_20 = fra.me.REG[0];
-    register_static_object(&once_value_20);
-  } else fra.me.REG[0] = once_value_20;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-  if (!once_value_21) {
-    fra.me.REG[0] = BOX_NativeString(", ");
-    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_21 = fra.me.REG[0];
-    register_static_object(&once_value_21);
-  } else fra.me.REG[0] = once_value_21;
-  fra.me.REG[0] = fra.me.REG[0];
-  fra.me.REG[0] = CALL_standard___string___Collection___join(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-  if (!once_value_22) {
-    fra.me.REG[0] = BOX_NativeString(" );\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_22 = fra.me.REG[0];
-    register_static_object(&once_value_22);
-  } else fra.me.REG[0] = once_value_22;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-  fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  /* native_interface/frontier.nit:246 */
-  fra.me.REG[6] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
-  /* native_interface/frontier.nit:249 */
-  REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:250 */
-    fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_23) {
-      fra.me.REG[0] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-      once_value_23 = fra.me.REG[0];
-      register_static_object(&once_value_23);
-    } else fra.me.REG[0] = once_value_23;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 250);
-    }
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[4])(fra.me.REG[4]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 250);
-    }
-    fra.me.REG[5] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[4])(fra.me.REG[4]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 250);
-    }
-    fra.me.REG[7] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[4])(fra.me.REG[4]);
-    fra.me.REG[7] = CALL_native_interface___ni_metamodel___MMType___assign_to_friendly(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5], fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_24) {
-      fra.me.REG[7] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_24 = fra.me.REG[7];
-      register_static_object(&once_value_24);
-    } else fra.me.REG[7] = once_value_24;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-    /* native_interface/frontier.nit:251 */
-    fra.me.REG[6] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_25) {
-      fra.me.REG[7] = BOX_NativeString("return ");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_25 = fra.me.REG[7];
-      register_static_object(&once_value_25);
-    } else fra.me.REG[7] = once_value_25;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[7]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 251);
-    }
-    fra.me.REG[4] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_26) {
-      fra.me.REG[4] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_26 = fra.me.REG[4];
-      register_static_object(&once_value_26);
-    } else fra.me.REG[4] = once_value_26;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
-  }
-  /* native_interface/frontier.nit:254 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMSrcMethod___compile_out_to_frontier[] = "frontier::MMSrcMethod::compile_out_to_frontier";
-void native_interface___frontier___MMSrcMethod___compile_out_to_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[8];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-    static val_t once_value_9; /* Once value */
-    static val_t once_value_10; /* Once value */
-  static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-  static val_t once_value_13; /* Once value */
-  static val_t once_value_14; /* Once value */
-    static val_t once_value_15; /* Once value */
-    static val_t once_value_16; /* Once value */
-  static val_t once_value_17; /* Once value */
-    static val_t once_value_18; /* Once value */
-    static val_t once_value_19; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 257;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_out_to_frontier;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 9;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  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[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:257 */
-  fra.me.REG[2] = fra.me.REG[0];
-  /* native_interface/frontier.nit:266 */
-  fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMMethod___explicit_imports(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[3])(fra.me.REG[3]);
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = CALL_metamodel___abstractmetamodel___MMLocalProperty___need_super(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  } else {
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:267 */
-    fra.me.REG[3] = CALL_metamodel___static_type___MMMethod___explicit_casts(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[3])(fra.me.REG[3]);
-  } else {
-    /* native_interface/frontier.nit:266 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:267 */
-    fra.me.REG[3] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 267);
-    }
-    fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[3])(fra.me.REG[3]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(0);
-        REGB0 = REGB1;
-      } else {
-        REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-        REGB0 = REGB1;
-      }
-    }
-    if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(1);
-    } else {
-      /* native_interface/frontier.nit:268 */
-      fra.me.REG[3] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 268);
-      }
-      fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[3])(fra.me.REG[3]);
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 268);
-      }
-      fra.me.REG[3] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[3])(fra.me.REG[3]);
-      fra.me.REG[3] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[3])(fra.me.REG[3]);
-      REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(0);
-          REGB1 = REGB2;
-        } else {
-          REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-          REGB1 = REGB2;
-        }
-      }
-      REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-      /* native_interface/frontier.nit:267 */
-      REGB0 = REGB1;
-    }
-  } else {
-    /* native_interface/frontier.nit:266 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  fra.me.REG[3] = REGB0;
-  /* native_interface/frontier.nit:271 */
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[6] = BOX_NativeString("\n/* out/indirect function for ");
-    REGB0 = TAG_Int(30);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_1 = fra.me.REG[6];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[6] = once_value_1;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  if (!once_value_2) {
-    fra.me.REG[6] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_2 = fra.me.REG[6];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[6] = once_value_2;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:272 */
-  fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[6] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_3 = fra.me.REG[6];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[6] = once_value_3;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMMethod___out_csignature(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  if (!once_value_4) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_4 = fra.me.REG[6];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[6] = once_value_4;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-  /* native_interface/frontier.nit:275 */
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_5) {
-    fra.me.REG[6] = BOX_NativeString("/* out/indirect function for ");
-    REGB0 = TAG_Int(29);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_5 = fra.me.REG[6];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[6] = once_value_5;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  if (!once_value_6) {
-    fra.me.REG[6] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_6 = fra.me.REG[6];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[6] = once_value_6;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:276 */
-  fra.me.REG[5] = CALL_native_interface___ni_metamodel___MMMethod___out_csignature(fra.me.REG[2])(fra.me.REG[2]);
-  fra.me.REG[5] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[5]);
-  /* native_interface/frontier.nit:279 */
-  fra.me.REG[4] = NEW_List_standard___collection___list___List___init();
-  /* native_interface/frontier.nit:280 */
-  REGB0 = CALL_syntax___syntax_base___MMLocalProperty___is_init(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    fra.me.REG[6] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 280);
-    }
-    fra.me.REG[6] = CALL_native_interface___frontier___MMSignature___recv_ni_variable(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  }
-  /* native_interface/frontier.nit:281 */
-  fra.me.REG[6] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(fra.me.REG[6]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 281);
-  }
-  fra.me.REG[6] = CALL_metamodel___static_type___MMSignature___params(fra.me.REG[6])(fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  /* native_interface/frontier.nit:283 */
-  fra.me.REG[6] = NEW_List_standard___collection___list___List___init();
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[4])(fra.me.REG[4], (&(fra.me)), ((fun_t)OC_native_interface___frontier___MMSrcMethod___compile_out_to_frontier_7));
-  /* native_interface/frontier.nit:295 */
-  fra.me.REG[3] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 295);
-  }
-  fra.me.REG[3] = CALL_native_interface___frontier___MMSignature___return_ni_variable(fra.me.REG[3])(fra.me.REG[3]);
-  /* native_interface/frontier.nit:296 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = CALL_syntax___syntax_base___MMLocalProperty___is_init(fra.me.REG[2])(fra.me.REG[2]);
-  } else {
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:297 */
-    fra.me.REG[4] = CALL_metamodel___static_type___MMLocalProperty___signature(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 297);
-    }
-    fra.me.REG[4] = CALL_metamodel___static_type___MMSignature___recv(fra.me.REG[4])(fra.me.REG[4]);
-    fra.me.REG[4] = NEW_ReturnVariable_native_interface___frontier___ReturnVariable___init(fra.me.REG[4]);
-    fra.me.REG[3] = fra.me.REG[4];
-  }
-  /* native_interface/frontier.nit:300 */
-  fra.me.REG[4] = NEW_Buffer_standard___string___Buffer___init();
-  /* native_interface/frontier.nit:301 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:302 */
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 302);
-    }
-    CALL_native_interface___frontier___NiVariable___prepare_for_nit(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-    /* native_interface/frontier.nit:303 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_9) {
-      fra.me.REG[8] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[8] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[8])(fra.me.REG[8], REGB0);
-      once_value_9 = fra.me.REG[8];
-      register_static_object(&once_value_9);
-    } else fra.me.REG[8] = once_value_9;
-    fra.me.REG[8] = fra.me.REG[8];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 303);
-    }
-    fra.me.REG[8] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
-    if (!once_value_10) {
-      fra.me.REG[8] = BOX_NativeString(" = ");
-      REGB0 = TAG_Int(3);
-      fra.me.REG[8] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[8])(fra.me.REG[8], REGB0);
-      once_value_10 = fra.me.REG[8];
-      register_static_object(&once_value_10);
-    } else fra.me.REG[8] = once_value_10;
-    fra.me.REG[8] = fra.me.REG[8];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
-    fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  }
-  /* native_interface/frontier.nit:306 */
-  REGB0 = TAG_Int(5);
-  fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_11) {
-    fra.me.REG[8] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[8] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[8])(fra.me.REG[8], REGB0);
-    once_value_11 = fra.me.REG[8];
-    register_static_object(&once_value_11);
-  } else fra.me.REG[8] = once_value_11;
-  fra.me.REG[8] = fra.me.REG[8];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[8]);
-  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMMethod___extern_name(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool((fra.me.REG[2]!=NIT_NULL) && VAL_ISA(fra.me.REG[2], COLOR_standard___string___String, ID_standard___string___String)) /*cast String*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_native_interface___frontier, 306);
-  }
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[2]);
-  if (!once_value_12) {
-    fra.me.REG[2] = BOX_NativeString("( ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_12 = fra.me.REG[2];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[2] = once_value_12;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[2]);
-  if (!once_value_13) {
-    fra.me.REG[2] = BOX_NativeString(", ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_13 = fra.me.REG[2];
-    register_static_object(&once_value_13);
-  } else fra.me.REG[2] = once_value_13;
-  fra.me.REG[2] = fra.me.REG[2];
-  fra.me.REG[2] = CALL_standard___string___Collection___join(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[2]);
-  if (!once_value_14) {
-    fra.me.REG[2] = BOX_NativeString(" );\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_14 = fra.me.REG[2];
-    register_static_object(&once_value_14);
-  } else fra.me.REG[2] = once_value_14;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[2]);
-  fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  /* native_interface/frontier.nit:308 */
-  fra.me.REG[7] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[5])(fra.me.REG[5]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[4]);
-  /* native_interface/frontier.nit:310 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:311 */
-    fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[5])(fra.me.REG[5]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_15) {
-      fra.me.REG[2] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_15 = fra.me.REG[2];
-      register_static_object(&once_value_15);
-    } else fra.me.REG[2] = once_value_15;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[2]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 311);
-    }
-    fra.me.REG[2] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[3])(fra.me.REG[3]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 311);
-    }
-    fra.me.REG[6] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[3])(fra.me.REG[3]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 311);
-    }
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[3])(fra.me.REG[3]);
-    fra.me.REG[0] = CALL_native_interface___ni_metamodel___MMType___assign_from_friendly(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6], fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[0]);
-    if (!once_value_16) {
-      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_16 = fra.me.REG[0];
-      register_static_object(&once_value_16);
-    } else fra.me.REG[0] = once_value_16;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[0]);
-    fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  }
-  /* native_interface/frontier.nit:314 */
-  fra.me.REG[7] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[5])(fra.me.REG[5]);
-  if (!once_value_17) {
-    fra.me.REG[4] = BOX_NativeString("nitni_local_ref_clean(  );\n");
-    REGB0 = TAG_Int(27);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_17 = fra.me.REG[4];
-    register_static_object(&once_value_17);
-  } else fra.me.REG[4] = once_value_17;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_compiling_writer___Writer___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[4]);
-  /* native_interface/frontier.nit:317 */
-  REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:318 */
-    fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[5])(fra.me.REG[5]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[7] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_18) {
-      fra.me.REG[0] = BOX_NativeString("return ");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-      once_value_18 = fra.me.REG[0];
-      register_static_object(&once_value_18);
-    } else fra.me.REG[0] = once_value_18;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[0]);
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 318);
-    }
-    fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[3]);
-    if (!once_value_19) {
-      fra.me.REG[3] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_19 = fra.me.REG[3];
-      register_static_object(&once_value_19);
-    } else fra.me.REG[3] = once_value_19;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[3]);
-    fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  }
-  /* native_interface/frontier.nit:321 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[5] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-  void OC_native_interface___frontier___MMSrcMethod___compile_out_to_frontier_7(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[1];} fra;
-    val_t REGB0;
-    val_t REGB1;
-    val_t REGB2;
-    fun_t CREG[1];
-    val_t tmp;
-      static val_t once_value_8; /* Once value */
-    /* native_interface/frontier.nit:285 */
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___MMSrcMethod___compile_out_to_frontier;
-    fra.me.has_broke = 0;
-    fra.me.REG_size = 2;
-    fra.me.nitni_local_ref_head = NULL;
-    fra.me.REG[0] = NIT_NULL;
-    fra.me.REG[1] = NIT_NULL;
-    fra.me.closure_ctx = closctx_param;
-    fra.me.closure_funs = CREG;
-    fra.me.REG[0] = p0;
-    CREG[0] = clos_fun0;
-    /* native_interface/frontier.nit:286 */
-    REGB0 = TAG_Bool(!UNTAG_Bool(closctx->REG[3]));
-    if (UNTAG_Bool(REGB0)) {
-      REGB0 = TAG_Bool(1);
-    } else {
-      fra.me.REG[1] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[0])(fra.me.REG[0]);
-      fra.me.REG[1] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[1])(fra.me.REG[1]);
-      fra.me.REG[1] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[1])(fra.me.REG[1]);
-      REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        REGB2 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(0);
-          REGB1 = REGB2;
-        } else {
-          REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
-          REGB1 = REGB2;
-        }
-      }
-      REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-      REGB0 = REGB1;
-    }
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:287 */
-      CALL_native_interface___frontier___NiVariable___prepare_for_c(fra.me.REG[0])(fra.me.REG[0], closctx->REG[5]);
-      /* native_interface/frontier.nit:288 */
-      fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___as_arg_to_c(fra.me.REG[0])(fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[6])(closctx->REG[6], fra.me.REG[0]);
-    } else {
-      /* native_interface/frontier.nit:290 */
-      if (!once_value_8) {
-        fra.me.REG[0] = BOX_NativeString("NULL");
-        REGB0 = TAG_Int(4);
-        fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-        once_value_8 = fra.me.REG[0];
-        register_static_object(&once_value_8);
-      } else fra.me.REG[0] = once_value_8;
-      fra.me.REG[0] = fra.me.REG[0];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(closctx->REG[6])(closctx->REG[6], fra.me.REG[0]);
-    }
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_native_interface___frontier___MMSignature___recv_ni_variable[] = "frontier::MMSignature::recv_ni_variable";
-val_t native_interface___frontier___MMSignature___recv_ni_variable(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_native_interface___frontier;
-  fra.me.line = 327;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___recv_ni_variable;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:327 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___MMSignature_____atrecv_ni_variable(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@recv_ni_variable", LOCATE_native_interface___frontier, 327);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___MMSignature_____atrecv_ni_variable(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___MMSignature___recv_ni_variable__eq[] = "frontier::MMSignature::recv_ni_variable=";
-void native_interface___frontier___MMSignature___recv_ni_variable__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 327;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___recv_ni_variable__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:327 */
-  ATTR_native_interface___frontier___MMSignature_____atrecv_ni_variable(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMSignature___return_ni_variable[] = "frontier::MMSignature::return_ni_variable";
-val_t native_interface___frontier___MMSignature___return_ni_variable(val_t p0){
-  struct {struct stack_frame_t me;} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 328;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___return_ni_variable;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* native_interface/frontier.nit:328 */
-  fra.me.REG[0] = ATTR_native_interface___frontier___MMSignature_____atreturn_ni_variable(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___MMSignature___return_ni_variable__eq[] = "frontier::MMSignature::return_ni_variable=";
-void native_interface___frontier___MMSignature___return_ni_variable__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 328;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___return_ni_variable__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:328 */
-  ATTR_native_interface___frontier___MMSignature_____atreturn_ni_variable(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMSignature___init[] = "frontier::MMSignature::(static_type::MMSignature::init)";
-void native_interface___frontier___MMSignature___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
-  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_metamodel___static_type___MMSignature].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  if (init_table[itpos3]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 329;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___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;
-  /* native_interface/frontier.nit:329 */
-  fra.me.REG[4] = fra.me.REG[0];
-  fra.me.REG[5] = fra.me.REG[2];
-  fra.me.REG[6] = fra.me.REG[3];
-  /* native_interface/frontier.nit:331 */
-  CALL_SUPER_native_interface___frontier___MMSignature___init(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], init_table);
-  /* native_interface/frontier.nit:333 */
-  REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:334 */
-    fra.me.REG[5] = NEW_ReturnVariable_native_interface___frontier___ReturnVariable___init(fra.me.REG[5]);
-    CALL_native_interface___frontier___MMSignature___return_ni_variable__eq(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  } else {
-    /* native_interface/frontier.nit:336 */
-    CALL_native_interface___frontier___MMSignature___return_ni_variable__eq(fra.me.REG[4])(fra.me.REG[4], NIT_NULL);
-  }
-  /* native_interface/frontier.nit:338 */
-  fra.me.REG[6] = NEW_ReceiverVariable_native_interface___frontier___ReceiverVariable___init(fra.me.REG[6]);
-  CALL_native_interface___frontier___MMSignature___recv_ni_variable__eq(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos3] = 1;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMSignature___compile_frontier[] = "frontier::MMSignature::compile_frontier";
-void native_interface___frontier___MMSignature___compile_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 341;
-  fra.me.meth = LOCATE_native_interface___frontier___MMSignature___compile_frontier;
-  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;
-  /* native_interface/frontier.nit:344 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___types(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___recv(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[3] = CALL_metamodel___type_formal___MMType___direct_type(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:347 */
-  fra.me.REG[3] = CALL_metamodel___static_type___MMSignature___params(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[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[2] = 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[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[4] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* native_interface/frontier.nit:347 */
-      fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___types(fra.me.REG[1])(fra.me.REG[1]);
-      fra.me.REG[4] = CALL_metamodel___static_type___MMParam___mmtype(fra.me.REG[4])(fra.me.REG[4]);
-      fra.me.REG[4] = CALL_metamodel___type_formal___MMType___direct_type(fra.me.REG[4])(fra.me.REG[4]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      /* ../lib/standard/collection/array.nit: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);
-  /* native_interface/frontier.nit:350 */
-  fra.me.REG[0] = CALL_metamodel___static_type___MMSignature___return_type(fra.me.REG[0])(fra.me.REG[0]);
-  /* native_interface/frontier.nit:351 */
-  REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:352 */
-    fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___types(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 352);
-    }
-    fra.me.REG[0] = CALL_metamodel___type_formal___MMType___direct_type(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___header_top[] = "frontier::FrontierVisitor::header_top";
-val_t native_interface___frontier___FrontierVisitor___header_top(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_native_interface___frontier;
-  fra.me.line = 360;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___header_top;
-  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;
-  /* native_interface/frontier.nit:360 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atheader_top(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@header_top", LOCATE_native_interface___frontier, 360);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atheader_top(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___header_top__eq[] = "frontier::FrontierVisitor::header_top=";
-void native_interface___frontier___FrontierVisitor___header_top__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 360;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___header_top__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:360 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atheader_top(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___header[] = "frontier::FrontierVisitor::header";
-val_t native_interface___frontier___FrontierVisitor___header(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_native_interface___frontier;
-  fra.me.line = 363;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___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;
-  /* native_interface/frontier.nit:363 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atheader(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@header", LOCATE_native_interface___frontier, 363);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atheader(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___header__eq[] = "frontier::FrontierVisitor::header=";
-void native_interface___frontier___FrontierVisitor___header__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 363;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___header__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:363 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atheader(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___body[] = "frontier::FrontierVisitor::body";
-val_t native_interface___frontier___FrontierVisitor___body(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_native_interface___frontier;
-  fra.me.line = 366;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___body;
-  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;
-  /* native_interface/frontier.nit:366 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atbody(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@body", LOCATE_native_interface___frontier, 366);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atbody(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___body__eq[] = "frontier::FrontierVisitor::body=";
-void native_interface___frontier___FrontierVisitor___body__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 366;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___body__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:366 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atbody(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___friendlys[] = "frontier::FrontierVisitor::friendlys";
-val_t native_interface___frontier___FrontierVisitor___friendlys(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_native_interface___frontier;
-  fra.me.line = 369;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___friendlys;
-  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;
-  /* native_interface/frontier.nit:369 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atfriendlys(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@friendlys", LOCATE_native_interface___frontier, 369);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atfriendlys(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___friendlys__eq[] = "frontier::FrontierVisitor::friendlys=";
-void native_interface___frontier___FrontierVisitor___friendlys__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 369;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___friendlys__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:369 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atfriendlys(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___types[] = "frontier::FrontierVisitor::types";
-val_t native_interface___frontier___FrontierVisitor___types(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_native_interface___frontier;
-  fra.me.line = 372;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___types;
-  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;
-  /* native_interface/frontier.nit:372 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____attypes(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@types", LOCATE_native_interface___frontier, 372);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____attypes(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___types__eq[] = "frontier::FrontierVisitor::types=";
-void native_interface___frontier___FrontierVisitor___types__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 372;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___types__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:372 */
-  ATTR_native_interface___frontier___FrontierVisitor_____attypes(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___casts[] = "frontier::FrontierVisitor::casts";
-val_t native_interface___frontier___FrontierVisitor___casts(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_native_interface___frontier;
-  fra.me.line = 375;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___casts;
-  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;
-  /* native_interface/frontier.nit:375 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atcasts(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@casts", LOCATE_native_interface___frontier, 375);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atcasts(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___casts__eq[] = "frontier::FrontierVisitor::casts=";
-void native_interface___frontier___FrontierVisitor___casts__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 375;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___casts__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:375 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atcasts(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___mmmodule[] = "frontier::FrontierVisitor::mmmodule";
-val_t native_interface___frontier___FrontierVisitor___mmmodule(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_native_interface___frontier;
-  fra.me.line = 378;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___mmmodule;
-  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;
-  /* native_interface/frontier.nit:378 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atmmmodule(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@mmmodule", LOCATE_native_interface___frontier, 378);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atmmmodule(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___mmmodule__eq[] = "frontier::FrontierVisitor::mmmodule=";
-void native_interface___frontier___FrontierVisitor___mmmodule__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 378;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___mmmodule__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:378 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atmmmodule(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___cprogram[] = "frontier::FrontierVisitor::cprogram";
-val_t native_interface___frontier___FrontierVisitor___cprogram(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_native_interface___frontier;
-  fra.me.line = 380;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___cprogram;
-  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;
-  /* native_interface/frontier.nit:380 */
-  REGB0 = TAG_Bool(ATTR_native_interface___frontier___FrontierVisitor_____atcprogram(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "@cprogram", LOCATE_native_interface___frontier, 380);
-  }
-  fra.me.REG[0] = ATTR_native_interface___frontier___FrontierVisitor_____atcprogram(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___cprogram__eq[] = "frontier::FrontierVisitor::cprogram=";
-void native_interface___frontier___FrontierVisitor___cprogram__eq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 380;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___cprogram__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:380 */
-  ATTR_native_interface___frontier___FrontierVisitor_____atcprogram(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___compile_cached[] = "frontier::FrontierVisitor::compile_cached";
-void native_interface___frontier___FrontierVisitor___compile_cached(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 382;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___compile_cached;
-  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;
-  /* native_interface/frontier.nit:386 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___types(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[1])(fra.me.REG[1], (&(fra.me)), ((fun_t)OC_native_interface___frontier___FrontierVisitor___compile_cached_1));
-  /* native_interface/frontier.nit:389 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___friendlys(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[1])(fra.me.REG[1], (&(fra.me)), ((fun_t)OC_native_interface___frontier___FrontierVisitor___compile_cached_2));
-  /* native_interface/frontier.nit:392 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___casts(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Collection___iterate(fra.me.REG[1])(fra.me.REG[1], (&(fra.me)), ((fun_t)OC_native_interface___frontier___FrontierVisitor___compile_cached_3));
-  stack_frame_head = fra.me.prev;
-  return;
-}
-  void OC_native_interface___frontier___FrontierVisitor___compile_cached_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;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___compile_cached;
-    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;
-    CALL_native_interface___frontier___MMType___compile_to_frontier(fra.me.REG[0])(fra.me.REG[0], closctx->REG[0]);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-  void OC_native_interface___frontier___FrontierVisitor___compile_cached_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;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___compile_cached;
-    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;
-    CALL_native_interface___frontier___MMExplicitImport___compile_friendly_to_frontier(fra.me.REG[0])(fra.me.REG[0], closctx->REG[0]);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-  void OC_native_interface___frontier___FrontierVisitor___compile_cached_3(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;
-    fun_t CREG[1];
-    val_t tmp;
-    fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-    fra.me.file = LOCATE_native_interface___frontier;
-    fra.me.line = 0;
-    fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___compile_cached;
-    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;
-    CALL_native_interface___frontier___MMImportedCast___compile_to_frontier(fra.me.REG[0])(fra.me.REG[0], closctx->REG[0]);
-    stack_frame_head = fra.me.prev;
-    return;
-  }
-static const char LOCATE_native_interface___frontier___FrontierVisitor___write_to_files[] = "frontier::FrontierVisitor::write_to_files";
-void native_interface___frontier___FrontierVisitor___write_to_files(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} 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 */
-  static val_t once_value_4; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 395;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___write_to_files;
-  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;
-  /* native_interface/frontier.nit:397 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[3] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    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[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  if (!once_value_2) {
-    fra.me.REG[3] = BOX_NativeString("._nitni.h");
-    REGB0 = TAG_Int(9);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_2 = fra.me.REG[3];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[3] = once_value_2;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  /* native_interface/frontier.nit:398 */
-  fra.me.REG[3] = NEW_OFStream_standard___file___OFStream___open(fra.me.REG[2]);
-  /* native_interface/frontier.nit:399 */
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_compiling_writer___Writer___write_to_stream(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:400 */
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_compiling_writer___Writer___write_to_stream(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:401 */
-  CALL_standard___stream___IOS___close(fra.me.REG[3])(fra.me.REG[3]);
-  /* native_interface/frontier.nit:403 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[5] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_3 = fra.me.REG[5];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[5] = once_value_3;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
-  if (!once_value_4) {
-    fra.me.REG[1] = BOX_NativeString("._nitni.c");
-    REGB0 = TAG_Int(9);
-    fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-    once_value_4 = fra.me.REG[1];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[1] = once_value_4;
-  fra.me.REG[1] = fra.me.REG[1];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  fra.me.REG[2] = fra.me.REG[4];
-  /* native_interface/frontier.nit:404 */
-  fra.me.REG[2] = NEW_OFStream_standard___file___OFStream___open(fra.me.REG[2]);
-  fra.me.REG[3] = fra.me.REG[2];
-  /* native_interface/frontier.nit:405 */
-  fra.me.REG[0] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_compiling_writer___Writer___write_to_stream(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-  /* native_interface/frontier.nit:406 */
-  CALL_standard___stream___IOS___close(fra.me.REG[3])(fra.me.REG[3]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___FrontierVisitor___init[] = "frontier::FrontierVisitor::init";
-void native_interface___frontier___FrontierVisitor___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_native_interface___frontier___FrontierVisitor].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t tmp;
-  if (init_table[itpos4]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 0;
-  fra.me.meth = LOCATE_native_interface___frontier___FrontierVisitor___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  ATTR_native_interface___frontier___FrontierVisitor_____atmmmodule(fra.me.REG[0]) = fra.me.REG[1];
-  ATTR_native_interface___frontier___FrontierVisitor_____atcprogram(fra.me.REG[0]) = fra.me.REG[2];
-  stack_frame_head = fra.me.prev;
-  init_table[itpos4] = 1;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast___compile_to_frontier[] = "frontier::MMImportedCast::compile_to_frontier";
-void native_interface___frontier___MMImportedCast___compile_to_frontier(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;
-    static val_t once_value_1; /* Once value */
-    static val_t once_value_2; /* Once value */
-    static val_t once_value_3; /* Once value */
-    static val_t once_value_4; /* Once value */
-    static val_t once_value_5; /* Once value */
-    static val_t once_value_6; /* Once value */
-    static val_t once_value_7; /* Once value */
-    static val_t once_value_8; /* Once value */
-    static val_t once_value_9; /* Once value */
-    static val_t once_value_10; /* Once value */
-    static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-  static val_t once_value_13; /* Once value */
-  static val_t once_value_14; /* Once value */
-  static val_t once_value_15; /* Once value */
-  static val_t once_value_16; /* Once value */
-  static val_t once_value_17; /* Once value */
-  static val_t once_value_18; /* Once value */
-  static val_t once_value_19; /* Once value */
-  static val_t once_value_20; /* Once value */
-  static val_t once_value_21; /* Once value */
-  static val_t once_value_22; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 411;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast___compile_to_frontier;
-  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;
-  /* native_interface/frontier.nit:415 */
-  REGB0 = CALL_metamodel___static_type___MMImportedCast___is_about_nullable_only(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    REGB0 = CALL_metamodel___static_type___MMImportedCast___is_not_null_to_nullable(fra.me.REG[0])(fra.me.REG[0]);
-  } else {
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:416 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(5);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_1) {
-      fra.me.REG[4] = BOX_NativeString("\n/* Type check for ");
-      REGB0 = TAG_Int(19);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_1 = fra.me.REG[4];
-      register_static_object(&once_value_1);
-    } else fra.me.REG[4] = once_value_1;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_2) {
-      fra.me.REG[4] = BOX_NativeString(" with ");
-      REGB0 = TAG_Int(6);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_2 = fra.me.REG[4];
-      register_static_object(&once_value_2);
-    } else fra.me.REG[4] = once_value_2;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_3) {
-      fra.me.REG[4] = BOX_NativeString(" */\n");
-      REGB0 = TAG_Int(4);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_3 = fra.me.REG[4];
-      register_static_object(&once_value_3);
-    } else fra.me.REG[4] = once_value_3;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    /* native_interface/frontier.nit:417 */
-    fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_4) {
-      fra.me.REG[4] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_4 = fra.me.REG[4];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[4] = once_value_4;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___is_a_local_csignature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    if (!once_value_5) {
-      fra.me.REG[4] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_5 = fra.me.REG[4];
-      register_static_object(&once_value_5);
-    } else fra.me.REG[4] = once_value_5;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    /* native_interface/frontier.nit:419 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_6) {
-      fra.me.REG[4] = BOX_NativeString("#ifndef ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_6 = fra.me.REG[4];
-      register_static_object(&once_value_6);
-    } else fra.me.REG[4] = once_value_6;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___is_a_friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_7) {
-      fra.me.REG[4] = BOX_NativeString("\n");
-      REGB0 = TAG_Int(1);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_7 = fra.me.REG[4];
-      register_static_object(&once_value_7);
-    } else fra.me.REG[4] = once_value_7;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    /* native_interface/frontier.nit:420 */
-    fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(5);
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_8) {
-      fra.me.REG[4] = BOX_NativeString("#define ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_8 = fra.me.REG[4];
-      register_static_object(&once_value_8);
-    } else fra.me.REG[4] = once_value_8;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___is_a_friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    if (!once_value_9) {
-      fra.me.REG[4] = BOX_NativeString(" ");
-      REGB0 = TAG_Int(1);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_9 = fra.me.REG[4];
-      register_static_object(&once_value_9);
-    } else fra.me.REG[4] = once_value_9;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___is_a_local_cname(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    if (!once_value_10) {
-      fra.me.REG[4] = BOX_NativeString("\n");
-      REGB0 = TAG_Int(1);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_10 = fra.me.REG[4];
-      register_static_object(&once_value_10);
-    } else fra.me.REG[4] = once_value_10;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-    /* native_interface/frontier.nit:421 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-    if (!once_value_11) {
-      fra.me.REG[3] = BOX_NativeString("#endif\n");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_11 = fra.me.REG[3];
-      register_static_object(&once_value_11);
-    } else fra.me.REG[3] = once_value_11;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    /* native_interface/frontier.nit:423 */
-    fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[3] = CALL_native_interface___frontier___MMImportedCast___compile_is(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-    /* native_interface/frontier.nit:424 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[3])(fra.me.REG[3]);
-    CALL_compiling_writer___Writer___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  }
-  /* native_interface/frontier.nit:428 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_12) {
-    fra.me.REG[4] = BOX_NativeString("\n/* Cast for ");
-    REGB0 = TAG_Int(13);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_12 = fra.me.REG[4];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[4] = once_value_12;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_13) {
-    fra.me.REG[4] = BOX_NativeString(" to ");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_13 = fra.me.REG[4];
-    register_static_object(&once_value_13);
-  } else fra.me.REG[4] = once_value_13;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_14) {
-    fra.me.REG[4] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_14 = fra.me.REG[4];
-    register_static_object(&once_value_14);
-  } else fra.me.REG[4] = once_value_14;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:429 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_15) {
-    fra.me.REG[4] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_15 = fra.me.REG[4];
-    register_static_object(&once_value_15);
-  } else fra.me.REG[4] = once_value_15;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___as_local_csignature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_16) {
-    fra.me.REG[4] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_16 = fra.me.REG[4];
-    register_static_object(&once_value_16);
-  } else fra.me.REG[4] = once_value_16;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:431 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_17) {
-    fra.me.REG[4] = BOX_NativeString("#ifndef ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_17 = fra.me.REG[4];
-    register_static_object(&once_value_17);
-  } else fra.me.REG[4] = once_value_17;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___as_friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_18) {
-    fra.me.REG[4] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_18 = fra.me.REG[4];
-    register_static_object(&once_value_18);
-  } else fra.me.REG[4] = once_value_18;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:432 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_19) {
-    fra.me.REG[4] = BOX_NativeString("#define ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_19 = fra.me.REG[4];
-    register_static_object(&once_value_19);
-  } else fra.me.REG[4] = once_value_19;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___as_friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_20) {
-    fra.me.REG[4] = BOX_NativeString(" ");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_20 = fra.me.REG[4];
-    register_static_object(&once_value_20);
-  } else fra.me.REG[4] = once_value_20;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMImportedCast___as_local_cname(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_21) {
-    fra.me.REG[4] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_21 = fra.me.REG[4];
-    register_static_object(&once_value_21);
-  } else fra.me.REG[4] = once_value_21;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:433 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_22) {
-    fra.me.REG[2] = BOX_NativeString("#endif\n");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_22 = fra.me.REG[2];
-    register_static_object(&once_value_22);
-  } else fra.me.REG[2] = once_value_22;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:435 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[2] = CALL_native_interface___frontier___MMImportedCast___compile_as(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  /* native_interface/frontier.nit:436 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast___compile_as[] = "frontier::MMImportedCast::compile_as";
-val_t native_interface___frontier___MMImportedCast___compile_as(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[7];} 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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  static val_t once_value_8; /* Once value */
-  static val_t once_value_9; /* Once value */
-  static val_t once_value_10; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 439;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast___compile_as;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 8;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[7] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:443 */
-  fra.me.REG[1] = CALL_native_interface___ni_metamodel___MMImportedCast___as_local_csignature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  fra.me.REG[1] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[1]);
-  /* native_interface/frontier.nit:445 */
-  if (!once_value_1) {
-    fra.me.REG[2] = BOX_NativeString("out");
-    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_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];
-  /* native_interface/frontier.nit:446 */
-  if (!once_value_2) {
-    fra.me.REG[3] = BOX_NativeString("temp");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_2 = fra.me.REG[3];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[3] = once_value_2;
-  fra.me.REG[3] = fra.me.REG[3];
-  /* native_interface/frontier.nit:448 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[6] = BOX_NativeString("val_t ");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_3 = fra.me.REG[6];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[6] = once_value_3;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  if (!once_value_4) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_4 = fra.me.REG[6];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[6] = once_value_4;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:449 */
-  fra.me.REG[5] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(1);
-  CALL_native_interface___frontier___MMType___compile_new_local_ref(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2], fra.me.REG[1], REGB0);
-  /* native_interface/frontier.nit:451 */
-  fra.me.REG[5] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_5) {
-    fra.me.REG[6] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_5 = fra.me.REG[6];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[6] = once_value_5;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[7] = CALL_native_interface___ni_metamodel___MMImportedCast___in_name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[7] = CALL_native_interface___ni_metamodel___MMType___assign_from_friendly(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3], fra.me.REG[7]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  if (!once_value_6) {
-    fra.me.REG[7] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-    once_value_6 = fra.me.REG[7];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[7] = once_value_6;
-  fra.me.REG[7] = fra.me.REG[7];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[7]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-  /* native_interface/frontier.nit:454 */
-  fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[4])(fra.me.REG[4]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:455 */
-    CALL_native_interface___frontier___MMImportedCast___compile_check_is_not_null(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[3]);
-  }
-  /* native_interface/frontier.nit:459 */
-  REGB0 = CALL_metamodel___static_type___MMImportedCast___is_about_nullable_only(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:460 */
-    fra.me.REG[4] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_native_interface___frontier___MMType___compile_check_isa(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[1], fra.me.REG[3]);
-  }
-  /* native_interface/frontier.nit:463 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_7) {
-    fra.me.REG[7] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-    once_value_7 = fra.me.REG[7];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[7] = once_value_7;
-  fra.me.REG[7] = fra.me.REG[7];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[7]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[3] = CALL_native_interface___ni_metamodel___MMType___assign_to_friendly(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  if (!once_value_8) {
-    fra.me.REG[3] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_8 = fra.me.REG[3];
-    register_static_object(&once_value_8);
-  } else fra.me.REG[3] = once_value_8;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:465 */
-  fra.me.REG[5] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_9) {
-    fra.me.REG[3] = BOX_NativeString("return ");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_9 = fra.me.REG[3];
-    register_static_object(&once_value_9);
-  } else fra.me.REG[3] = once_value_9;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  if (!once_value_10) {
-    fra.me.REG[2] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_10 = fra.me.REG[2];
-    register_static_object(&once_value_10);
-  } else fra.me.REG[2] = once_value_10;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-  /* native_interface/frontier.nit:467 */
-  goto label11;
-  label11: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast___compile_is[] = "frontier::MMImportedCast::compile_is";
-val_t native_interface___frontier___MMImportedCast___compile_is(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} 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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-      static val_t once_value_6; /* Once value */
-      static val_t once_value_7; /* Once value */
-      static val_t once_value_8; /* Once value */
-      static val_t once_value_9; /* Once value */
-    static val_t once_value_10; /* Once value */
-    static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 470;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast___compile_is;
-  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;
-  /* native_interface/frontier.nit:474 */
-  fra.me.REG[1] = CALL_native_interface___ni_metamodel___MMImportedCast___is_a_local_csignature(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  fra.me.REG[1] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[1]);
-  /* native_interface/frontier.nit:476 */
-  if (!once_value_1) {
-    fra.me.REG[2] = BOX_NativeString("temp");
-    REGB0 = TAG_Int(4);
-    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];
-  /* native_interface/frontier.nit:477 */
-  fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_2) {
-    fra.me.REG[5] = BOX_NativeString("val_t ");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_2 = fra.me.REG[5];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[5] = once_value_2;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  if (!once_value_3) {
-    fra.me.REG[5] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_3 = fra.me.REG[5];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[5] = once_value_3;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:479 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_4) {
-    fra.me.REG[5] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_4 = fra.me.REG[5];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[5] = once_value_4;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-  fra.me.REG[5] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMImportedCast___in_name(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMType___assign_from_friendly(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  if (!once_value_5) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_5 = fra.me.REG[6];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[6] = once_value_5;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:481 */
-  REGB0 = CALL_metamodel___static_type___MMImportedCast___is_nullable_to_not_null(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:482 */
-    REGB0 = CALL_metamodel___static_type___MMImportedCast___is_about_nullable_only(fra.me.REG[0])(fra.me.REG[0]);
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:483 */
-      fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-      REGB0 = TAG_Int(3);
-      fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_6) {
-        fra.me.REG[6] = BOX_NativeString("if ( ! ISNULL(");
-        REGB0 = TAG_Int(14);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_6 = fra.me.REG[6];
-        register_static_object(&once_value_6);
-      } else fra.me.REG[6] = once_value_6;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-      if (!once_value_7) {
-        fra.me.REG[6] = BOX_NativeString(") ) return 0;\n");
-        REGB0 = TAG_Int(14);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_7 = fra.me.REG[6];
-        register_static_object(&once_value_7);
-      } else fra.me.REG[6] = once_value_7;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-      fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    } else {
-      /* native_interface/frontier.nit:485 */
-      fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-      REGB0 = TAG_Int(3);
-      fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_8) {
-        fra.me.REG[6] = BOX_NativeString("if ( ISNULL(");
-        REGB0 = TAG_Int(12);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_8 = fra.me.REG[6];
-        register_static_object(&once_value_8);
-      } else fra.me.REG[6] = once_value_8;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-      if (!once_value_9) {
-        fra.me.REG[6] = BOX_NativeString(") ) return 0;\n");
-        REGB0 = TAG_Int(14);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_9 = fra.me.REG[6];
-        register_static_object(&once_value_9);
-      } else fra.me.REG[6] = once_value_9;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-      fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    }
-  }
-  /* native_interface/frontier.nit:489 */
-  REGB0 = CALL_metamodel___static_type___MMImportedCast___is_about_nullable_only(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:490 */
-    fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_10) {
-      fra.me.REG[6] = BOX_NativeString("if ( ! ");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-      once_value_10 = fra.me.REG[6];
-      register_static_object(&once_value_10);
-    } else fra.me.REG[6] = once_value_10;
-    fra.me.REG[6] = fra.me.REG[6];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-    fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_native_interface___frontier___MMType___compile_condition_isa(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    if (!once_value_11) {
-      fra.me.REG[2] = BOX_NativeString(" ) return 0;\n");
-      REGB0 = TAG_Int(13);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_11 = fra.me.REG[2];
-      register_static_object(&once_value_11);
-    } else fra.me.REG[2] = once_value_11;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  }
-  /* native_interface/frontier.nit:493 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_12) {
-    fra.me.REG[3] = BOX_NativeString("return 1;\n");
-    REGB0 = TAG_Int(10);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_12 = fra.me.REG[3];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[3] = once_value_12;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:495 */
-  goto label13;
-  label13: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast___compile_check_is_not_null[] = "frontier::MMImportedCast::compile_check_is_not_null";
-void native_interface___frontier___MMImportedCast___compile_check_is_not_null(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} 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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 498;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast___compile_check_is_not_null;
-  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;
-  /* native_interface/frontier.nit:502 */
-  fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[5] = BOX_NativeString("if ( ISNULL(");
-    REGB0 = TAG_Int(12);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_1 = fra.me.REG[5];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[5] = once_value_1;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  if (!once_value_2) {
-    fra.me.REG[2] = BOX_NativeString(") ){");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_2 = fra.me.REG[2];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[2] = once_value_2;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:503 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[2] = BOX_NativeString("\tfprintf( stderr, \"Casting from ");
-    REGB0 = TAG_Int(32);
-    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[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[2] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-  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[3])(fra.me.REG[3], fra.me.REG[2]);
-  if (!once_value_4) {
-    fra.me.REG[2] = BOX_NativeString(" to ");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_4 = fra.me.REG[2];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[2] = once_value_4;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  if (!once_value_5) {
-    fra.me.REG[0] = BOX_NativeString(" failed because value is null.\" );\n");
-    REGB0 = TAG_Int(35);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_5 = fra.me.REG[0];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[0] = once_value_5;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:504 */
-  fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_6) {
-    fra.me.REG[4] = BOX_NativeString("\tabort();\n");
-    REGB0 = TAG_Int(10);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_6 = fra.me.REG[4];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[4] = once_value_6;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:505 */
-  fra.me.REG[1] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_7) {
-    fra.me.REG[4] = BOX_NativeString("}");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_7 = fra.me.REG[4];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[4] = once_value_7;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast_____eqeq[] = "frontier::MMImportedCast::(kernel::Object::==)";
-val_t native_interface___frontier___MMImportedCast_____eqeq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 508;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast_____eqeq;
-  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;
-  /* native_interface/frontier.nit:510 */
-  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_metamodel___static_type___MMImportedCast, ID_metamodel___static_type___MMImportedCast)) /*cast MMImportedCast*/;
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:511 */
-    REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 511);
-    }
-    fra.me.REG[2] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[3] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-      REGB0 = REGB1;
-    }
-  } else {
-    /* native_interface/frontier.nit:510 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:511 */
-    REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 511);
-    }
-    fra.me.REG[1] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[1])(fra.me.REG[1]);
-    fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[1],fra.me.REG[0]));
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-      REGB0 = REGB1;
-    }
-  } else {
-    /* native_interface/frontier.nit:510 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_native_interface___frontier___MMImportedCast___hash[] = "frontier::MMImportedCast::(hash::Object::hash)";
-val_t native_interface___frontier___MMImportedCast___hash(val_t p0){
-  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_native_interface___frontier;
-  fra.me.line = 513;
-  fra.me.meth = LOCATE_native_interface___frontier___MMImportedCast___hash;
-  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;
-  /* native_interface/frontier.nit:515 */
-  fra.me.REG[1] = CALL_metamodel___static_type___MMImportedCast___from(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = CALL_standard___hash___Object___hash(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMImportedCast___to(fra.me.REG[0])(fra.me.REG[0]);
-  REGB1 = CALL_standard___hash___Object___hash(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/standard/kernel.nit:245 */
-  REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-  /* native_interface/frontier.nit:515 */
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB1;
-}
-static const char LOCATE_native_interface___frontier___MMType___compile_check_isa[] = "frontier::MMType::compile_check_isa";
-void native_interface___frontier___MMType___compile_check_isa(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} 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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 520;
-  fra.me.meth = LOCATE_native_interface___frontier___MMType___compile_check_isa;
-  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;
-  /* native_interface/frontier.nit:526 */
-  fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[5] = BOX_NativeString("if ( ! ");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_1 = fra.me.REG[5];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[5] = once_value_1;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  fra.me.REG[2] = CALL_native_interface___frontier___MMType___compile_condition_isa(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  if (!once_value_2) {
-    fra.me.REG[2] = BOX_NativeString(" ){\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_2 = fra.me.REG[2];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[2] = once_value_2;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-  fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:527 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[2] = BOX_NativeString("\tfprintf( stderr, \"Casting to ");
-    REGB0 = TAG_Int(30);
-    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[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  if (!once_value_4) {
-    fra.me.REG[2] = BOX_NativeString(" failed because value is not a ");
-    REGB0 = TAG_Int(31);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-    once_value_4 = fra.me.REG[2];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[2] = once_value_4;
-  fra.me.REG[2] = fra.me.REG[2];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  if (!once_value_5) {
-    fra.me.REG[0] = BOX_NativeString(".\" );\n");
-    REGB0 = TAG_Int(6);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_5 = fra.me.REG[0];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[0] = once_value_5;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[0]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-  /* native_interface/frontier.nit:528 */
-  fra.me.REG[3] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_6) {
-    fra.me.REG[4] = BOX_NativeString("\tabort();\n");
-    REGB0 = TAG_Int(10);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_6 = fra.me.REG[4];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[4] = once_value_6;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  /* native_interface/frontier.nit:529 */
-  fra.me.REG[1] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_7) {
-    fra.me.REG[4] = BOX_NativeString("}\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_7 = fra.me.REG[4];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[4] = once_value_7;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMType___compile_condition_isa[] = "frontier::MMType::compile_condition_isa";
-val_t native_interface___frontier___MMType___compile_condition_isa(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  static val_t once_value_2; /* Once value */
-  static val_t once_value_3; /* Once value */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 532;
-  fra.me.meth = LOCATE_native_interface___frontier___MMType___compile_condition_isa;
-  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;
-  /* native_interface/frontier.nit:536 */
-  REGB0 = TAG_Int(13);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[3] = BOX_NativeString("( ISOBJ( ");
-    REGB0 = TAG_Int(9);
-    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[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  if (!once_value_2) {
-    fra.me.REG[3] = BOX_NativeString(" ) ? ISNULL( ");
-    REGB0 = TAG_Int(13);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_2 = fra.me.REG[3];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[3] = once_value_2;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  if (!once_value_3) {
-    fra.me.REG[3] = BOX_NativeString(" ) || OBJISA( ");
-    REGB0 = TAG_Int(14);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_3 = fra.me.REG[3];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[3] = once_value_3;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  if (!once_value_4) {
-    fra.me.REG[3] = BOX_NativeString(", ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_4 = fra.me.REG[3];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[3] = once_value_4;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  fra.me.REG[3] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[3] = CALL_compiling___compiling_base___MMLocalClass___cname(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  if (!once_value_5) {
-    fra.me.REG[3] = BOX_NativeString(" ): VALISA( ");
-    REGB0 = TAG_Int(12);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_5 = fra.me.REG[3];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[3] = once_value_5;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  if (!once_value_6) {
-    fra.me.REG[1] = BOX_NativeString(", ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-    once_value_6 = fra.me.REG[1];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[1] = once_value_6;
-  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[1]);
-  fra.me.REG[0] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_compiling___compiling_base___MMLocalClass___cname(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-  if (!once_value_7) {
-    fra.me.REG[0] = BOX_NativeString(" ) )");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-    once_value_7 = fra.me.REG[0];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[0] = once_value_7;
-  fra.me.REG[0] = fra.me.REG[0];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  goto label8;
-  label8: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[2];
-}
-static const char LOCATE_native_interface___frontier___MMType___compile_to_frontier[] = "frontier::MMType::compile_to_frontier";
-void native_interface___frontier___MMType___compile_to_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-    static val_t once_value_1; /* Once value */
-    static val_t once_value_2; /* Once value */
-    static val_t once_value_3; /* Once value */
-    static val_t once_value_4; /* Once value */
-    static val_t once_value_5; /* Once value */
-    static val_t once_value_6; /* Once value */
-    static val_t once_value_7; /* Once value */
-    static val_t once_value_8; /* Once value */
-    static val_t once_value_9; /* Once value */
-    static val_t once_value_10; /* Once value */
-    static val_t once_value_11; /* Once value */
-    static val_t once_value_12; /* Once value */
-    static val_t once_value_13; /* Once value */
-      static val_t once_value_14; /* Once value */
-      static val_t once_value_15; /* Once value */
-      static val_t once_value_16; /* Once value */
-      static val_t once_value_17; /* Once value */
-      static val_t once_value_18; /* Once value */
-      static val_t once_value_19; /* Once value */
-      static val_t once_value_20; /* Once value */
-      static val_t once_value_21; /* Once value */
-      static val_t once_value_22; /* Once value */
-      static val_t once_value_23; /* Once value */
-      static val_t once_value_24; /* Once value */
-      static val_t once_value_25; /* Once value */
-      static val_t once_value_26; /* Once value */
-      static val_t once_value_27; /* Once value */
-    static val_t once_value_28; /* Once value */
-    static val_t once_value_29; /* Once value */
-    static val_t once_value_30; /* Once value */
-    static val_t once_value_31; /* Once value */
-    static val_t once_value_32; /* Once value */
-    static val_t once_value_33; /* Once value */
-    static val_t once_value_34; /* Once value */
-    static val_t once_value_35; /* Once value */
-    static val_t once_value_36; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 539;
-  fra.me.meth = LOCATE_native_interface___frontier___MMType___compile_to_frontier;
-  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;
-  /* native_interface/frontier.nit:543 */
-  fra.me.REG[2] = CALL_metamodel___static_type___MMType___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[2] = CALL_primitive_info___MMLocalClass___primitive_info(fra.me.REG[2])(fra.me.REG[2]);
-  /* native_interface/frontier.nit:544 */
-  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___static_type___MMType___is_nullable(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:545 */
-    fra.me.REG[2] = CALL_native_interface___ni_metamodel___MMType___friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-    /* native_interface/frontier.nit:546 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_1) {
-      fra.me.REG[4] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_1 = fra.me.REG[4];
-      register_static_object(&once_value_1);
-    } else fra.me.REG[4] = once_value_1;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    fra.me.REG[4] = CALL_standard___string___AbstractString___to_upper(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    if (!once_value_2) {
-      fra.me.REG[4] = BOX_NativeString("_TYPE");
-      REGB0 = TAG_Int(5);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_2 = fra.me.REG[4];
-      register_static_object(&once_value_2);
-    } else fra.me.REG[4] = once_value_2;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-    fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-    /* native_interface/frontier.nit:549 */
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_3) {
-      fra.me.REG[6] = BOX_NativeString("#ifndef ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-      once_value_3 = fra.me.REG[6];
-      register_static_object(&once_value_3);
-    } else fra.me.REG[6] = once_value_3;
-    fra.me.REG[6] = fra.me.REG[6];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    if (!once_value_4) {
-      fra.me.REG[6] = BOX_NativeString("\n");
-      REGB0 = TAG_Int(1);
-      fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-      once_value_4 = fra.me.REG[6];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[6] = once_value_4;
-    fra.me.REG[6] = fra.me.REG[6];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-    fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    /* native_interface/frontier.nit:550 */
-    fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_5) {
-      fra.me.REG[6] = BOX_NativeString("#define ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-      once_value_5 = fra.me.REG[6];
-      register_static_object(&once_value_5);
-    } else fra.me.REG[6] = once_value_5;
-    fra.me.REG[6] = fra.me.REG[6];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    if (!once_value_6) {
-      fra.me.REG[3] = BOX_NativeString("\n");
-      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_6 = fra.me.REG[3];
-      register_static_object(&once_value_6);
-    } else fra.me.REG[3] = once_value_6;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    /* native_interface/frontier.nit:551 */
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_7) {
-      fra.me.REG[3] = BOX_NativeString("struct s_");
-      REGB0 = TAG_Int(9);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_7 = fra.me.REG[3];
-      register_static_object(&once_value_7);
-    } else fra.me.REG[3] = once_value_7;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-    if (!once_value_8) {
-      fra.me.REG[3] = BOX_NativeString("{\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_8 = fra.me.REG[3];
-      register_static_object(&once_value_8);
-    } else fra.me.REG[3] = once_value_8;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    /* native_interface/frontier.nit:552 */
-    fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    if (!once_value_9) {
-      fra.me.REG[4] = BOX_NativeString("\t\tstruct nitni_ref ref; /* real ref struct, must be first */\n");
-      REGB0 = TAG_Int(61);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_9 = fra.me.REG[4];
-      register_static_object(&once_value_9);
-    } else fra.me.REG[4] = once_value_9;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    /* native_interface/frontier.nit:553 */
-    fra.me.REG[4] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    if (!once_value_10) {
-      fra.me.REG[5] = BOX_NativeString("};\n");
-      REGB0 = TAG_Int(3);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_10 = fra.me.REG[5];
-      register_static_object(&once_value_10);
-    } else fra.me.REG[5] = once_value_10;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    /* native_interface/frontier.nit:554 */
-    fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(5);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_11) {
-      fra.me.REG[3] = BOX_NativeString("typedef struct s_");
-      REGB0 = TAG_Int(17);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_11 = fra.me.REG[3];
-      register_static_object(&once_value_11);
-    } else fra.me.REG[3] = once_value_11;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    if (!once_value_12) {
-      fra.me.REG[3] = BOX_NativeString(" *");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_12 = fra.me.REG[3];
-      register_static_object(&once_value_12);
-    } else fra.me.REG[3] = once_value_12;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    if (!once_value_13) {
-      fra.me.REG[3] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_13 = fra.me.REG[3];
-      register_static_object(&once_value_13);
-    } else fra.me.REG[3] = once_value_13;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    /* native_interface/frontier.nit:557 */
-    REGB0 = CALL_metamodel___static_type___MMType___is_nullable(fra.me.REG[0])(fra.me.REG[0]);
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:558 */
-      fra.me.REG[4] = CALL_metamodel___static_type___MMType___mmmodule(fra.me.REG[0])(fra.me.REG[0]);
-      fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMType___local_friendly_null_getter_from(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-      /* native_interface/frontier.nit:560 */
-      fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-      REGB0 = TAG_Int(3);
-      fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_14) {
-        fra.me.REG[6] = BOX_NativeString("#ifndef ");
-        REGB0 = TAG_Int(8);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_14 = fra.me.REG[6];
-        register_static_object(&once_value_14);
-      } else fra.me.REG[6] = once_value_14;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-      fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMType___friendly_null_getter(fra.me.REG[0])(fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-      if (!once_value_15) {
-        fra.me.REG[6] = BOX_NativeString("\n");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_15 = fra.me.REG[6];
-        register_static_object(&once_value_15);
-      } else fra.me.REG[6] = once_value_15;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-      fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-      /* native_interface/frontier.nit:561 */
-      fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-      REGB0 = TAG_Int(5);
-      fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_16) {
-        fra.me.REG[6] = BOX_NativeString("#define ");
-        REGB0 = TAG_Int(8);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_16 = fra.me.REG[6];
-        register_static_object(&once_value_16);
-      } else fra.me.REG[6] = once_value_16;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMType___friendly_null_getter(fra.me.REG[0])(fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      if (!once_value_17) {
-        fra.me.REG[6] = BOX_NativeString(" ");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_17 = fra.me.REG[6];
-        register_static_object(&once_value_17);
-      } else fra.me.REG[6] = once_value_17;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      if (!once_value_18) {
-        fra.me.REG[6] = BOX_NativeString("\n");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_18 = fra.me.REG[6];
-        register_static_object(&once_value_18);
-      } else fra.me.REG[6] = once_value_18;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-      /* native_interface/frontier.nit:562 */
-      fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-      if (!once_value_19) {
-        fra.me.REG[3] = BOX_NativeString("#endif\n");
-        REGB0 = TAG_Int(7);
-        fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-        once_value_19 = fra.me.REG[3];
-        register_static_object(&once_value_19);
-      } else fra.me.REG[3] = once_value_19;
-      fra.me.REG[3] = fra.me.REG[3];
-      CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-      /* native_interface/frontier.nit:564 */
-      fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-      REGB0 = TAG_Int(5);
-      fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_20) {
-        fra.me.REG[6] = BOX_NativeString("");
-        REGB0 = TAG_Int(0);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_20 = fra.me.REG[6];
-        register_static_object(&once_value_20);
-      } else fra.me.REG[6] = once_value_20;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-      if (!once_value_21) {
-        fra.me.REG[6] = BOX_NativeString(" ");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_21 = fra.me.REG[6];
-        register_static_object(&once_value_21);
-      } else fra.me.REG[6] = once_value_21;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      if (!once_value_22) {
-        fra.me.REG[6] = BOX_NativeString("();\n");
-        REGB0 = TAG_Int(4);
-        fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-        once_value_22 = fra.me.REG[6];
-        register_static_object(&once_value_22);
-      } else fra.me.REG[6] = once_value_22;
-      fra.me.REG[6] = fra.me.REG[6];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-      /* native_interface/frontier.nit:566 */
-      REGB0 = TAG_Int(5);
-      fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_23) {
-        fra.me.REG[3] = BOX_NativeString("");
-        REGB0 = TAG_Int(0);
-        fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-        once_value_23 = fra.me.REG[3];
-        register_static_object(&once_value_23);
-      } else fra.me.REG[3] = once_value_23;
-      fra.me.REG[3] = fra.me.REG[3];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-      if (!once_value_24) {
-        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_24 = fra.me.REG[2];
-        register_static_object(&once_value_24);
-      } else fra.me.REG[2] = once_value_24;
-      fra.me.REG[2] = fra.me.REG[2];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      if (!once_value_25) {
-        fra.me.REG[4] = BOX_NativeString("()");
-        REGB0 = TAG_Int(2);
-        fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-        once_value_25 = fra.me.REG[4];
-        register_static_object(&once_value_25);
-      } else fra.me.REG[4] = once_value_25;
-      fra.me.REG[4] = fra.me.REG[4];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-      fra.me.REG[5] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[5]);
-      /* native_interface/frontier.nit:567 */
-      if (!once_value_26) {
-        fra.me.REG[4] = BOX_NativeString("n");
-        REGB0 = TAG_Int(1);
-        fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-        once_value_26 = fra.me.REG[4];
-        register_static_object(&once_value_26);
-      } else fra.me.REG[4] = once_value_26;
-      fra.me.REG[4] = fra.me.REG[4];
-      REGB0 = TAG_Bool(1);
-      CALL_native_interface___frontier___MMType___compile_new_local_ref(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4], fra.me.REG[5], REGB0);
-      /* native_interface/frontier.nit:568 */
-      fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[5])(fra.me.REG[5]);
-      if (!once_value_27) {
-        fra.me.REG[2] = BOX_NativeString("return n;\n");
-        REGB0 = TAG_Int(10);
-        fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-        once_value_27 = fra.me.REG[2];
-        register_static_object(&once_value_27);
-      } else fra.me.REG[2] = once_value_27;
-      fra.me.REG[2] = fra.me.REG[2];
-      CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-      /* native_interface/frontier.nit:569 */
-      fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-      fra.me.REG[5] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[5])(fra.me.REG[5]);
-      CALL_compiling_writer___Writer___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-    }
-    /* native_interface/frontier.nit:573 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_28) {
-      fra.me.REG[2] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_28 = fra.me.REG[2];
-      register_static_object(&once_value_28);
-    } else fra.me.REG[2] = once_value_28;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-    fra.me.REG[2] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_native_interface___ni_metamodel___MMType___mangled_name(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-    if (!once_value_29) {
-      fra.me.REG[2] = BOX_NativeString("_incr_ref");
-      REGB0 = TAG_Int(9);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_29 = fra.me.REG[2];
-      register_static_object(&once_value_29);
-    } else fra.me.REG[2] = once_value_29;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[2]);
-    fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-    /* native_interface/frontier.nit:574 */
-    fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_30) {
-      fra.me.REG[3] = BOX_NativeString("#define ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_30 = fra.me.REG[3];
-      register_static_object(&once_value_30);
-    } else fra.me.REG[3] = once_value_30;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    if (!once_value_31) {
-      fra.me.REG[5] = BOX_NativeString("( x ) nitni_global_ref_incr( (struct nitni_ref*)(x) )\n");
-      REGB0 = TAG_Int(54);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_31 = fra.me.REG[5];
-      register_static_object(&once_value_31);
-    } else fra.me.REG[5] = once_value_31;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    /* native_interface/frontier.nit:577 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_32) {
-      fra.me.REG[2] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_32 = fra.me.REG[2];
-      register_static_object(&once_value_32);
-    } else fra.me.REG[2] = once_value_32;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[2]);
-    fra.me.REG[0] = CALL_metamodel___static_type___MMType___as_notnull(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___ni_metamodel___MMType___mangled_name(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0]);
-    if (!once_value_33) {
-      fra.me.REG[0] = BOX_NativeString("_decr_ref");
-      REGB0 = TAG_Int(9);
-      fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-      once_value_33 = fra.me.REG[0];
-      register_static_object(&once_value_33);
-    } else fra.me.REG[0] = once_value_33;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0]);
-    fra.me.REG[4] = CALL_standard___string___Object___to_s(fra.me.REG[4])(fra.me.REG[4]);
-    /* native_interface/frontier.nit:578 */
-    fra.me.REG[0] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_34) {
-      fra.me.REG[5] = BOX_NativeString("#define ");
-      REGB0 = TAG_Int(8);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_34 = fra.me.REG[5];
-      register_static_object(&once_value_34);
-    } else fra.me.REG[5] = once_value_34;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    if (!once_value_35) {
-      fra.me.REG[4] = BOX_NativeString("( x ) nitni_global_ref_decr( (struct nitni_ref*)(x) )\n");
-      REGB0 = TAG_Int(54);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      once_value_35 = fra.me.REG[4];
-      register_static_object(&once_value_35);
-    } else fra.me.REG[4] = once_value_35;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-    /* native_interface/frontier.nit:580 */
-    fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___header_top(fra.me.REG[1])(fra.me.REG[1]);
-    if (!once_value_36) {
-      fra.me.REG[2] = BOX_NativeString("#endif\n");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB0);
-      once_value_36 = fra.me.REG[2];
-      register_static_object(&once_value_36);
-    } else fra.me.REG[2] = once_value_36;
-    fra.me.REG[2] = fra.me.REG[2];
-    CALL_compiling_writer___Writer___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMType___compile_new_local_ref[] = "frontier::MMType::compile_new_local_ref";
-void native_interface___frontier___MMType___compile_new_local_ref(val_t p0, val_t p1, val_t p2, val_t p3){
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  static val_t once_value_1; /* Once value */
-  static val_t once_value_2; /* Once value */
-  static val_t once_value_3; /* Once value */
-    static val_t once_value_4; /* Once value */
-    static val_t once_value_5; /* Once value */
-    static val_t once_value_6; /* Once value */
-    static val_t once_value_7; /* Once value */
-    static val_t once_value_8; /* Once value */
-    static val_t once_value_9; /* Once value */
-    static val_t once_value_10; /* Once value */
-      static val_t once_value_11; /* Once value */
-      static val_t once_value_12; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 584;
-  fra.me.meth = LOCATE_native_interface___frontier___MMType___compile_new_local_ref;
-  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;
-  REGB0 = p3;
-  /* native_interface/frontier.nit:586 */
-  fra.me.REG[3] = CALL_native_interface___ni_metamodel___MMType___friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-  /* native_interface/frontier.nit:588 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[2])(fra.me.REG[2]);
-  REGB1 = TAG_Int(5);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-  if (!once_value_1) {
-    fra.me.REG[6] = BOX_NativeString("");
-    REGB1 = TAG_Int(0);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB1);
-    once_value_1 = fra.me.REG[6];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[6] = once_value_1;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  if (!once_value_2) {
-    fra.me.REG[6] = BOX_NativeString(" ");
-    REGB1 = TAG_Int(1);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB1);
-    once_value_2 = fra.me.REG[6];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[6] = once_value_2;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-  if (!once_value_3) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB1 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB1);
-    once_value_3 = fra.me.REG[6];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[6] = once_value_3;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:589 */
-  REGB1 = CALL_native_interface___ni_metamodel___MMType___uses_nitni_ref(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB1)) {
-    /* native_interface/frontier.nit:590 */
-    fra.me.REG[0] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB1 = TAG_Int(5);
-    fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-    if (!once_value_4) {
-      fra.me.REG[4] = BOX_NativeString("");
-      REGB1 = TAG_Int(0);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB1);
-      once_value_4 = fra.me.REG[4];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[4] = once_value_4;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-    if (!once_value_5) {
-      fra.me.REG[4] = BOX_NativeString(" = malloc( sizeof( struct s_");
-      REGB1 = TAG_Int(28);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB1);
-      once_value_5 = fra.me.REG[4];
-      register_static_object(&once_value_5);
-    } else fra.me.REG[4] = once_value_5;
-    fra.me.REG[4] = fra.me.REG[4];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    if (!once_value_6) {
-      fra.me.REG[3] = BOX_NativeString(" ) );\n");
-      REGB1 = TAG_Int(6);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-      once_value_6 = fra.me.REG[3];
-      register_static_object(&once_value_6);
-    } else fra.me.REG[3] = once_value_6;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5]);
-    /* native_interface/frontier.nit:591 */
-    fra.me.REG[5] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB1 = TAG_Int(3);
-    fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-    if (!once_value_7) {
-      fra.me.REG[3] = BOX_NativeString("");
-      REGB1 = TAG_Int(0);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-      once_value_7 = fra.me.REG[3];
-      register_static_object(&once_value_7);
-    } else fra.me.REG[3] = once_value_7;
-    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]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    if (!once_value_8) {
-      fra.me.REG[3] = BOX_NativeString("->ref.val = NIT_NULL;\n");
-      REGB1 = TAG_Int(22);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-      once_value_8 = fra.me.REG[3];
-      register_static_object(&once_value_8);
-    } else fra.me.REG[3] = once_value_8;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-    fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[0]);
-    /* native_interface/frontier.nit:592 */
-    fra.me.REG[0] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB1 = TAG_Int(3);
-    fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-    if (!once_value_9) {
-      fra.me.REG[3] = BOX_NativeString("");
-      REGB1 = TAG_Int(0);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-      once_value_9 = fra.me.REG[3];
-      register_static_object(&once_value_9);
-    } else fra.me.REG[3] = once_value_9;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-    if (!once_value_10) {
-      fra.me.REG[3] = BOX_NativeString("->ref.count = 0;\n");
-      REGB1 = TAG_Int(17);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-      once_value_10 = fra.me.REG[3];
-      register_static_object(&once_value_10);
-    } else fra.me.REG[3] = once_value_10;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-    fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5]);
-    /* native_interface/frontier.nit:593 */
-    if (UNTAG_Bool(REGB0)) {
-      /* native_interface/frontier.nit:594 */
-      fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-      REGB0 = TAG_Int(3);
-      fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-      if (!once_value_11) {
-        fra.me.REG[0] = BOX_NativeString("nitni_local_ref_add( (struct nitni_ref *)");
-        REGB0 = TAG_Int(41);
-        fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB0);
-        once_value_11 = fra.me.REG[0];
-        register_static_object(&once_value_11);
-      } else fra.me.REG[0] = once_value_11;
-      fra.me.REG[0] = fra.me.REG[0];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[0]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-      if (!once_value_12) {
-        fra.me.REG[1] = BOX_NativeString(" );\n");
-        REGB0 = TAG_Int(4);
-        fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-        once_value_12 = fra.me.REG[1];
-        register_static_object(&once_value_12);
-      } else fra.me.REG[1] = once_value_12;
-      fra.me.REG[1] = fra.me.REG[1];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-      fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-      CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-    }
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMType___compile_stub_local_ref[] = "frontier::MMType::compile_stub_local_ref";
-void native_interface___frontier___MMType___compile_stub_local_ref(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[6];} 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 */
-    static val_t once_value_4; /* Once value */
-    static val_t once_value_5; /* Once value */
-    static val_t once_value_6; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 599;
-  fra.me.meth = LOCATE_native_interface___frontier___MMType___compile_stub_local_ref;
-  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;
-  /* native_interface/frontier.nit:603 */
-  fra.me.REG[3] = CALL_native_interface___ni_metamodel___MMType___friendly_extern_name(fra.me.REG[0])(fra.me.REG[0]);
-  /* native_interface/frontier.nit:604 */
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___decls(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[5] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[6] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_1 = fra.me.REG[6];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[6] = once_value_1;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-  if (!once_value_2) {
-    fra.me.REG[6] = BOX_NativeString(" ");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_2 = fra.me.REG[6];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[6] = once_value_2;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-  if (!once_value_3) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_3 = fra.me.REG[6];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[6] = once_value_3;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  fra.me.REG[5] = CALL_standard___string___Object___to_s(fra.me.REG[5])(fra.me.REG[5]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-  /* native_interface/frontier.nit:605 */
-  REGB0 = CALL_native_interface___ni_metamodel___MMType___uses_nitni_ref(fra.me.REG[0])(fra.me.REG[0]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:606 */
-    fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[2])(fra.me.REG[2]);
-    REGB0 = TAG_Int(5);
-    fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_4) {
-      fra.me.REG[5] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_4 = fra.me.REG[5];
-      register_static_object(&once_value_4);
-    } else fra.me.REG[5] = once_value_4;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-    if (!once_value_5) {
-      fra.me.REG[1] = BOX_NativeString(" = (");
-      REGB0 = TAG_Int(4);
-      fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB0);
-      once_value_5 = fra.me.REG[1];
-      register_static_object(&once_value_5);
-    } else fra.me.REG[1] = once_value_5;
-    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]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-    if (!once_value_6) {
-      fra.me.REG[3] = BOX_NativeString(")NULL;\n");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_6 = fra.me.REG[3];
-      register_static_object(&once_value_6);
-    } else fra.me.REG[3] = once_value_6;
-    fra.me.REG[3] = fra.me.REG[3];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-    fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMExplicitImport___compile_friendly_to_frontier[] = "frontier::MMExplicitImport::compile_friendly_to_frontier";
-void native_interface___frontier___MMExplicitImport___compile_friendly_to_frontier(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  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 */
-  static val_t once_value_4; /* Once value */
-  static val_t once_value_5; /* Once value */
-  static val_t once_value_6; /* Once value */
-  static val_t once_value_7; /* Once value */
-  static val_t once_value_8; /* Once value */
-  static val_t once_value_9; /* Once value */
-  static val_t once_value_10; /* Once value */
-  static val_t once_value_11; /* Once value */
-  static val_t once_value_12; /* Once value */
-    static val_t once_value_14; /* Once value */
-    static val_t once_value_15; /* Once value */
-    static val_t once_value_16; /* Once value */
-    static val_t once_value_17; /* Once value */
-    static val_t once_value_18; /* Once value */
-    static val_t once_value_19; /* Once value */
-    static val_t once_value_20; /* Once value */
-    static val_t once_value_21; /* Once value */
-  static val_t once_value_23; /* Once value */
-  static val_t once_value_24; /* Once value */
-  static val_t once_value_25; /* Once value */
-    static val_t once_value_26; /* Once value */
-    static val_t once_value_27; /* Once value */
-    static val_t once_value_28; /* Once value */
-    static val_t once_value_29; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 612;
-  fra.me.meth = LOCATE_native_interface___frontier___MMExplicitImport___compile_friendly_to_frontier;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 8;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[5] = NIT_NULL;
-  fra.me.REG[6] = NIT_NULL;
-  fra.me.REG[7] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* native_interface/frontier.nit:615 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_1) {
-    fra.me.REG[4] = BOX_NativeString("/* friendly for ");
-    REGB0 = TAG_Int(16);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_1 = fra.me.REG[4];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[4] = once_value_1;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  if (!once_value_2) {
-    fra.me.REG[4] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_2 = fra.me.REG[4];
-    register_static_object(&once_value_2);
-  } else fra.me.REG[4] = once_value_2;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:616 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_3) {
-    fra.me.REG[4] = BOX_NativeString("");
-    REGB0 = TAG_Int(0);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_3 = fra.me.REG[4];
-    register_static_object(&once_value_3);
-  } else fra.me.REG[4] = once_value_3;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[6] = CALL_native_interface___ni_metamodel___MMMethod___frontier_csignature_from(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  if (!once_value_4) {
-    fra.me.REG[6] = BOX_NativeString(";\n");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_4 = fra.me.REG[6];
-    register_static_object(&once_value_4);
-  } else fra.me.REG[6] = once_value_4;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:620 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_5) {
-    fra.me.REG[6] = BOX_NativeString("#ifndef ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_5 = fra.me.REG[6];
-    register_static_object(&once_value_5);
-  } else fra.me.REG[6] = once_value_5;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[5] = CALL_primitive_info___MMMethod___friendly_extern_name(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[5]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-  if (!once_value_6) {
-    fra.me.REG[5] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_6 = fra.me.REG[5];
-    register_static_object(&once_value_6);
-  } else fra.me.REG[5] = once_value_6;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[5]);
-  fra.me.REG[3] = CALL_standard___string___Object___to_s(fra.me.REG[3])(fra.me.REG[3]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:621 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(5);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_7) {
-    fra.me.REG[5] = BOX_NativeString("#define ");
-    REGB0 = TAG_Int(8);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-    once_value_7 = fra.me.REG[5];
-    register_static_object(&once_value_7);
-  } else fra.me.REG[5] = once_value_7;
-  fra.me.REG[5] = fra.me.REG[5];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-  fra.me.REG[5] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[6] = CALL_primitive_info___MMMethod___friendly_extern_name(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[6]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  if (!once_value_8) {
-    fra.me.REG[6] = BOX_NativeString(" ");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB0);
-    once_value_8 = fra.me.REG[6];
-    register_static_object(&once_value_8);
-  } else fra.me.REG[6] = once_value_8;
-  fra.me.REG[6] = fra.me.REG[6];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[5] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___local_friendly_name_from(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[5], fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_9) {
-    fra.me.REG[4] = BOX_NativeString("\n");
-    REGB0 = TAG_Int(1);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_9 = fra.me.REG[4];
-    register_static_object(&once_value_9);
-  } else fra.me.REG[4] = once_value_9;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:622 */
-  fra.me.REG[2] = CALL_native_interface___frontier___FrontierVisitor___header(fra.me.REG[1])(fra.me.REG[1]);
-  if (!once_value_10) {
-    fra.me.REG[3] = BOX_NativeString("#endif\n");
-    REGB0 = TAG_Int(7);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_10 = fra.me.REG[3];
-    register_static_object(&once_value_10);
-  } else fra.me.REG[3] = once_value_10;
-  fra.me.REG[3] = fra.me.REG[3];
-  CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  /* native_interface/frontier.nit:625 */
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Int(3);
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_11) {
-    fra.me.REG[4] = BOX_NativeString("/* friendly for ");
-    REGB0 = TAG_Int(16);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_11 = fra.me.REG[4];
-    register_static_object(&once_value_11);
-  } else fra.me.REG[4] = once_value_11;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMLocalProperty___full_name(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  if (!once_value_12) {
-    fra.me.REG[4] = BOX_NativeString(" */\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB0);
-    once_value_12 = fra.me.REG[4];
-    register_static_object(&once_value_12);
-  } else fra.me.REG[4] = once_value_12;
-  fra.me.REG[4] = fra.me.REG[4];
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* native_interface/frontier.nit:627 */
-  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[3] = CALL_native_interface___frontier___FrontierVisitor___mmmodule(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[4] = CALL_native_interface___ni_metamodel___MMMethod___frontier_csignature_from(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3], fra.me.REG[4]);
-  fra.me.REG[4] = NEW_FunctionCompiler_native_interface___ni_tools___FunctionCompiler___init(fra.me.REG[4]);
-  /* native_interface/frontier.nit:630 */
-  fra.me.REG[3] = NEW_Array_standard___collection___array___Array___init();
-  /* native_interface/frontier.nit:631 */
-  fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = CALL_syntax___syntax_base___MMLocalProperty___is_init(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    fra.me.REG[2] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_native_interface___frontier___MMSignature___recv_ni_variable(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  }
-  /* native_interface/frontier.nit:632 */
-  fra.me.REG[2] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___params(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:267 */
-  fra.me.REG[2] = fra.me.REG[3];
-  /* ../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[5] = 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[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)];
-      /* native_interface/frontier.nit:634 */
-      CALL_native_interface___frontier___NiVariable___prepare_for_nit(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[4]);
-      /* ../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 label13;
-    }
-  }
-  label13: while(0);
-  /* native_interface/frontier.nit:637 */
-  fra.me.REG[5] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[5] = CALL_native_interface___frontier___MMSignature___return_ni_variable(fra.me.REG[5])(fra.me.REG[5]);
-  /* native_interface/frontier.nit:638 */
-  REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  if (UNTAG_Bool(REGB0)) {
-    fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = CALL_syntax___syntax_base___MMLocalProperty___is_init(fra.me.REG[2])(fra.me.REG[2]);
-  } else {
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:639 */
-    fra.me.REG[2] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[2] = CALL_metamodel___static_type___MMSignature___recv(fra.me.REG[2])(fra.me.REG[2]);
-    fra.me.REG[2] = NEW_ReturnVariable_native_interface___frontier___ReturnVariable___init(fra.me.REG[2]);
-    fra.me.REG[5] = fra.me.REG[2];
-  }
-  /* native_interface/frontier.nit:641 */
-  fra.me.REG[2] = NEW_Buffer_standard___string___Buffer___init();
-  /* native_interface/frontier.nit:642 */
-  REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:643 */
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 643);
-    }
-    CALL_native_interface___frontier___NiVariable___prepare_for_c(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-    /* native_interface/frontier.nit:644 */
-    REGB0 = TAG_Int(3);
-    fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_14) {
-      fra.me.REG[7] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_14 = fra.me.REG[7];
-      register_static_object(&once_value_14);
-    } else fra.me.REG[7] = once_value_14;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 644);
-    }
-    fra.me.REG[7] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_15) {
-      fra.me.REG[7] = BOX_NativeString(" = ");
-      REGB0 = TAG_Int(3);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_15 = fra.me.REG[7];
-      register_static_object(&once_value_15);
-    } else fra.me.REG[7] = once_value_15;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  }
-  /* native_interface/frontier.nit:648 */
-  fra.me.REG[6] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  REGB0 = CALL_syntax___syntax_base___MMLocalProperty___is_init(fra.me.REG[6])(fra.me.REG[6]);
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:649 */
-    REGB0 = TAG_Int(5);
-    fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_16) {
-      fra.me.REG[7] = BOX_NativeString("NEW_");
-      REGB0 = TAG_Int(4);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_16 = fra.me.REG[7];
-      register_static_object(&once_value_16);
-    } else fra.me.REG[7] = once_value_16;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[7] = CALL_standard___string___Object___to_s(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_17) {
-      fra.me.REG[7] = BOX_NativeString("_");
-      REGB0 = TAG_Int(1);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_17 = fra.me.REG[7];
-      register_static_object(&once_value_17);
-    } else fra.me.REG[7] = once_value_17;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMGlobalProperty___intro(fra.me.REG[7])(fra.me.REG[7]);
-    fra.me.REG[7] = CALL_compiling___compiling_base___MMLocalProperty___cname(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_18) {
-      fra.me.REG[7] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_18 = fra.me.REG[7];
-      register_static_object(&once_value_18);
-    } else fra.me.REG[7] = once_value_18;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  } else {
-    /* native_interface/frontier.nit:651 */
-    REGB0 = TAG_Int(5);
-    fra.me.REG[6] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_19) {
-      fra.me.REG[7] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_19 = fra.me.REG[7];
-      register_static_object(&once_value_19);
-    } else fra.me.REG[7] = once_value_19;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[7] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[7])(fra.me.REG[7]);
-    fra.me.REG[7] = CALL_compiling___compiling_base___MMGlobalProperty___meth_call(fra.me.REG[7])(fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    if (!once_value_20) {
-      fra.me.REG[7] = BOX_NativeString("( ");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_20 = fra.me.REG[7];
-      register_static_object(&once_value_20);
-    } else fra.me.REG[7] = once_value_20;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-    fra.me.REG[0] = CALL_metamodel___static_type___MMExplicitImport___signature(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___frontier___MMSignature___recv_ni_variable(fra.me.REG[0])(fra.me.REG[0]);
-    fra.me.REG[0] = CALL_native_interface___frontier___NiVariable___as_arg_to_nit(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-    if (!once_value_21) {
-      fra.me.REG[0] = BOX_NativeString(" )");
-      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_21 = fra.me.REG[0];
-      register_static_object(&once_value_21);
-    } else fra.me.REG[0] = once_value_21;
-    fra.me.REG[0] = fra.me.REG[0];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[0]);
-    fra.me.REG[6] = CALL_standard___string___Object___to_s(fra.me.REG[6])(fra.me.REG[6]);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[6]);
-  }
-  /* native_interface/frontier.nit:654 */
-  fra.me.REG[6] = NEW_Array_standard___collection___array___Array___init();
-  /* ../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[0] = 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[0]==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[7] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-      /* native_interface/frontier.nit:655 */
-      fra.me.REG[7] = CALL_native_interface___frontier___NiVariable___as_arg_to_nit(fra.me.REG[7])(fra.me.REG[7]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[7]);
-      /* ../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 label22;
-    }
-  }
-  label22: while(0);
-  /* native_interface/frontier.nit:657 */
-  REGB0 = TAG_Int(3);
-  fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-  if (!once_value_23) {
-    fra.me.REG[3] = BOX_NativeString("( ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_23 = fra.me.REG[3];
-    register_static_object(&once_value_23);
-  } else fra.me.REG[3] = once_value_23;
-  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]);
-  if (!once_value_24) {
-    fra.me.REG[3] = BOX_NativeString(", ");
-    REGB0 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_24 = fra.me.REG[3];
-    register_static_object(&once_value_24);
-  } else fra.me.REG[3] = once_value_24;
-  fra.me.REG[3] = fra.me.REG[3];
-  fra.me.REG[3] = CALL_standard___string___Collection___join(fra.me.REG[6])(fra.me.REG[6], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[3]);
-  if (!once_value_25) {
-    fra.me.REG[3] = BOX_NativeString(" );\n");
-    REGB0 = TAG_Int(4);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-    once_value_25 = fra.me.REG[3];
-    register_static_object(&once_value_25);
-  } else fra.me.REG[3] = once_value_25;
-  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[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-  /* native_interface/frontier.nit:659 */
-  fra.me.REG[0] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[4])(fra.me.REG[4]);
-  fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-  CALL_compiling_writer___Writer___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  /* native_interface/frontier.nit:662 */
-  REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[5])(fra.me.REG[5], NIT_NULL);
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:663 */
-    fra.me.REG[2] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[4])(fra.me.REG[4]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_26) {
-      fra.me.REG[3] = BOX_NativeString("");
-      REGB0 = TAG_Int(0);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB0);
-      once_value_26 = fra.me.REG[3];
-      register_static_object(&once_value_26);
-    } else fra.me.REG[3] = once_value_26;
-    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]);
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 663);
-    }
-    fra.me.REG[3] = CALL_native_interface___frontier___NiVariable___ni_type(fra.me.REG[5])(fra.me.REG[5]);
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 663);
-    }
-    fra.me.REG[6] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[5])(fra.me.REG[5]);
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 663);
-    }
-    fra.me.REG[7] = CALL_native_interface___frontier___NiVariable___ni_from_name(fra.me.REG[5])(fra.me.REG[5]);
-    fra.me.REG[7] = CALL_native_interface___ni_metamodel___MMType___assign_to_friendly(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6], fra.me.REG[7]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[7]);
-    if (!once_value_27) {
-      fra.me.REG[7] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_27 = fra.me.REG[7];
-      register_static_object(&once_value_27);
-    } else fra.me.REG[7] = once_value_27;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[7]);
-    fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[0]);
-    /* native_interface/frontier.nit:664 */
-    fra.me.REG[0] = CALL_native_interface___ni_tools___FunctionCompiler___exprs(fra.me.REG[4])(fra.me.REG[4]);
-    REGB0 = TAG_Int(3);
-    fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
-    if (!once_value_28) {
-      fra.me.REG[7] = BOX_NativeString("return ");
-      REGB0 = TAG_Int(7);
-      fra.me.REG[7] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[7])(fra.me.REG[7], REGB0);
-      once_value_28 = fra.me.REG[7];
-      register_static_object(&once_value_28);
-    } else fra.me.REG[7] = once_value_28;
-    fra.me.REG[7] = fra.me.REG[7];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[7]);
-    REGB0 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 664);
-    }
-    fra.me.REG[5] = CALL_native_interface___frontier___NiVariable___ni_to_name(fra.me.REG[5])(fra.me.REG[5]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-    if (!once_value_29) {
-      fra.me.REG[5] = BOX_NativeString(";\n");
-      REGB0 = TAG_Int(2);
-      fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB0);
-      once_value_29 = fra.me.REG[5];
-      register_static_object(&once_value_29);
-    } else fra.me.REG[5] = once_value_29;
-    fra.me.REG[5] = fra.me.REG[5];
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[5]);
-    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    CALL_compiling_writer___Writer___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  }
-  /* native_interface/frontier.nit:667 */
-  fra.me.REG[1] = CALL_native_interface___frontier___FrontierVisitor___body(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[4] = CALL_native_interface___ni_tools___FunctionCompiler___to_writer(fra.me.REG[4])(fra.me.REG[4]);
-  CALL_compiling_writer___Writer___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[4]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_native_interface___frontier___MMExplicitImport___hash[] = "frontier::MMExplicitImport::(hash::Object::hash)";
-val_t native_interface___frontier___MMExplicitImport___hash(val_t p0){
-  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_native_interface___frontier;
-  fra.me.line = 670;
-  fra.me.meth = LOCATE_native_interface___frontier___MMExplicitImport___hash;
-  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;
-  /* native_interface/frontier.nit:672 */
-  fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMLocalProperty___global(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = CALL_standard___hash___Object___hash(fra.me.REG[1])(fra.me.REG[1]);
-  fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  REGB1 = CALL_standard___hash___Object___hash(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/standard/kernel.nit:245 */
-  REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-  /* native_interface/frontier.nit:672 */
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB1;
-}
-static const char LOCATE_native_interface___frontier___MMExplicitImport_____eqeq[] = "frontier::MMExplicitImport::(kernel::Object::==)";
-val_t native_interface___frontier___MMExplicitImport_____eqeq(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_native_interface___frontier;
-  fra.me.line = 674;
-  fra.me.meth = LOCATE_native_interface___frontier___MMExplicitImport_____eqeq;
-  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;
-  /* native_interface/frontier.nit:676 */
-  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_metamodel___abstractmetamodel___MMExplicitImport, ID_metamodel___abstractmetamodel___MMExplicitImport)) /*cast MMExplicitImport*/;
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:677 */
-    fra.me.REG[2] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 677);
-    }
-    fra.me.REG[3] = CALL_metamodel___abstractmetamodel___MMExplicitImport___method(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[2],fra.me.REG[3]));
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-      REGB0 = REGB1;
-    }
-  } else {
-    /* native_interface/frontier.nit:676 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  if (UNTAG_Bool(REGB0)) {
-    /* native_interface/frontier.nit:677 */
-    fra.me.REG[0] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[0])(fra.me.REG[0]);
-    REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_native_interface___frontier, 677);
-    }
-    fra.me.REG[1] = CALL_metamodel___abstractmetamodel___MMExplicitImport___local_class(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[0],fra.me.REG[1]));
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      REGB1 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-      REGB0 = REGB1;
-    }
-  } else {
-    /* native_interface/frontier.nit:676 */
-    REGB1 = TAG_Bool(0);
-    REGB0 = REGB1;
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}