use nitg to bootstrap; drop bootstrap of nitc

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

diff --git a/c_src/opts._sep.c b/c_src/opts._sep.c
deleted file mode 100644 (file)
index 23ebd5a..0000000
--- a/c_src/opts._sep.c
+++ /dev/null
@@ -1,2671 +0,0 @@
-/* This C file is generated by NIT to compile module opts. */
-#include "opts._sep.h"
-static const char LOCATE_opts___Option___names[] = "opts::Option::names";
-val_t opts___Option___names(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_opts;
-  fra.me.line = 19;
-  fra.me.meth = LOCATE_opts___Option___names;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:19 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_names", LOCATE_opts, 19);
-  }
-  fra.me.REG[0] = ATTR_opts___Option____names(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___Option___helptext[] = "opts::Option::helptext";
-val_t opts___Option___helptext(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_opts;
-  fra.me.line = 25;
-  fra.me.meth = LOCATE_opts___Option___helptext;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:25 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____helptext(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_helptext", LOCATE_opts, 25);
-  }
-  fra.me.REG[0] = ATTR_opts___Option____helptext(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___Option___errors[] = "opts::Option::errors";
-val_t opts___Option___errors(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_opts;
-  fra.me.line = 28;
-  fra.me.meth = LOCATE_opts___Option___errors;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:28 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____errors(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 28);
-  }
-  fra.me.REG[0] = ATTR_opts___Option____errors(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___Option___mandatory[] = "opts::Option::mandatory";
-val_t opts___Option___mandatory(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_opts;
-  fra.me.line = 31;
-  fra.me.meth = LOCATE_opts___Option___mandatory;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:31 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____mandatory(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_mandatory", LOCATE_opts, 31);
-  }
-  REGB0 = ATTR_opts___Option____mandatory(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_opts___Option___mandatory__eq[] = "opts::Option::mandatory=";
-void opts___Option___mandatory__eq(val_t p0, val_t p1){
-  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_opts;
-  fra.me.line = 31;
-  fra.me.meth = LOCATE_opts___Option___mandatory__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  REGB0 = p1;
-  /* ../lib/opts.nit:31 */
-  ATTR_opts___Option____mandatory(fra.me.REG[0]) = REGB0;
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___Option___read[] = "opts::Option::read";
-val_t opts___Option___read(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_opts;
-  fra.me.line = 34;
-  fra.me.meth = LOCATE_opts___Option___read;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:34 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____read(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_read", LOCATE_opts, 34);
-  }
-  REGB0 = ATTR_opts___Option____read(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_opts___Option___value__eq[] = "opts::Option::value=";
-void opts___Option___value__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_opts;
-  fra.me.line = 37;
-  fra.me.meth = LOCATE_opts___Option___value__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:37 */
-  ATTR_opts___Option____value(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___Option___value[] = "opts::Option::value";
-val_t opts___Option___value(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 40;
-  fra.me.meth = LOCATE_opts___Option___value;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:40 */
-  fra.me.REG[1] = fra.me.REG[0];
-  /* ../lib/opts.nit:41 */
-  fra.me.REG[1] = ATTR_opts___Option____value(fra.me.REG[1]);
-  REGB0 = TAG_Bool((fra.me.REG[1]==NIT_NULL) || VAL_ISA(fra.me.REG[1], VTCOLOR_opts___Option___VALUE(fra.me.REG[0]), VTID_opts___Option___VALUE(fra.me.REG[0]))) /*cast VALUE*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 41);
-  }
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_opts___Option___default_value[] = "opts::Option::default_value";
-val_t opts___Option___default_value(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_opts;
-  fra.me.line = 43;
-  fra.me.meth = LOCATE_opts___Option___default_value;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:43 */
-  fra.me.REG[0] = ATTR_opts___Option____default_value(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___Option___default_value__eq[] = "opts::Option::default_value=";
-void opts___Option___default_value__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_opts;
-  fra.me.line = 43;
-  fra.me.meth = LOCATE_opts___Option___default_value__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:43 */
-  ATTR_opts___Option____default_value(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___Option___init_opt[] = "opts::Option::init_opt";
-void opts___Option___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
-  int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___Option].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  if (init_table[itpos0]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 46;
-  fra.me.meth = LOCATE_opts___Option___init_opt;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 5;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  fra.me.REG[3] = p3;
-  /* ../lib/opts.nit:49 */
-  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)) {
-    /* ../lib/opts.nit:50 */
-    fra.me.REG[4] = NEW_Array_standard___collection___array___Array___init();
-    ATTR_opts___Option____names(fra.me.REG[0]) = fra.me.REG[4];
-  } else {
-    /* ../lib/opts.nit:52 */
-    REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_opts, 52);
-    }
-    fra.me.REG[3] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[3])(fra.me.REG[3]);
-    ATTR_opts___Option____names(fra.me.REG[0]) = fra.me.REG[3];
-  }
-  /* ../lib/opts.nit:54 */
-  ATTR_opts___Option____helptext(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/opts.nit:55 */
-  REGB0 = TAG_Bool(0);
-  ATTR_opts___Option____mandatory(fra.me.REG[0]) = REGB0;
-  /* ../lib/opts.nit:56 */
-  REGB0 = TAG_Bool(0);
-  ATTR_opts___Option____read(fra.me.REG[0]) = REGB0;
-  /* ../lib/opts.nit:57 */
-  ATTR_opts___Option____default_value(fra.me.REG[0]) = fra.me.REG[2];
-  /* ../lib/opts.nit:58 */
-  ATTR_opts___Option____value(fra.me.REG[0]) = fra.me.REG[2];
-  /* ../lib/opts.nit:59 */
-  fra.me.REG[2] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_opts___Option____errors(fra.me.REG[0]) = fra.me.REG[2];
-  stack_frame_head = fra.me.prev;
-  init_table[itpos0] = 1;
-  return;
-}
-static const char LOCATE_opts___Option___add_aliases[] = "opts::Option::add_aliases";
-void opts___Option___add_aliases(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 62;
-  fra.me.meth = LOCATE_opts___Option___add_aliases;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:62 */
-  fra.me.REG[2] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 62);
-  }
-  /* ../lib/opts.nit:63 */
-  REGB0 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[2])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_names", LOCATE_opts, 63);
-  }
-  fra.me.REG[2] = ATTR_opts___Option____names(fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___Option___to_s[] = "opts::Option::(string::Object::to_s)";
-val_t opts___Option___to_s(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_opts;
-  fra.me.line = 65;
-  fra.me.meth = LOCATE_opts___Option___to_s;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:66 */
-  REGB0 = TAG_Int(2);
-  fra.me.REG[0] = CALL_opts___Option___pretty(fra.me.REG[0])(fra.me.REG[0], REGB0);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___Option___pretty[] = "opts::Option::pretty";
-val_t opts___Option___pretty(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 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 */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 68;
-  fra.me.meth = LOCATE_opts___Option___pretty;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  REGB0 = p1;
-  /* ../lib/opts.nit:71 */
-  if (!once_value_1) {
-    fra.me.REG[1] = BOX_NativeString("  ");
-    REGB1 = TAG_Int(2);
-    fra.me.REG[1] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[1])(fra.me.REG[1], REGB1);
-    once_value_1 = fra.me.REG[1];
-    register_static_object(&once_value_1);
-  } else fra.me.REG[1] = once_value_1;
-  fra.me.REG[1] = fra.me.REG[1];
-  fra.me.REG[1] = NEW_Buffer_standard___string___Buffer___from(fra.me.REG[1]);
-  /* ../lib/opts.nit:72 */
-  REGB1 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_names", LOCATE_opts, 72);
-  }
-  fra.me.REG[2] = ATTR_opts___Option____names(fra.me.REG[0]);
-  if (!once_value_2) {
-    fra.me.REG[3] = BOX_NativeString(", ");
-    REGB1 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-    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];
-  fra.me.REG[3] = CALL_standard___string___Collection___join(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ../lib/opts.nit:73 */
-  if (!once_value_3) {
-    fra.me.REG[3] = BOX_NativeString("  ");
-    REGB1 = TAG_Int(2);
-    fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB1);
-    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___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ../lib/standard/collection/array.nit:24 */
-  REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-  }
-  REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/kernel.nit:247 */
-  REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ../lib/opts.nit:75 */
-  REGB0 = TAG_Int(0);
-  REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-  }
-  /* ../lib/standard/kernel.nit:244 */
-  REGB0 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB0));
-  /* ../lib/opts.nit:75 */
-  if (UNTAG_Bool(REGB0)) {
-    if (!once_value_4) {
-      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_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];
-    fra.me.REG[3] = CALL_standard___string___String_____star(fra.me.REG[3])(fra.me.REG[3], REGB1);
-    CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  }
-  /* ../lib/opts.nit:76 */
-  fra.me.REG[0] = CALL_opts___Option___helptext(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ../lib/opts.nit:78 */
-  fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-  goto label5;
-  label5: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_opts___Option___pretty_default[] = "opts::Option::pretty_default";
-val_t opts___Option___pretty_default(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} 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_4; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 81;
-  fra.me.meth = LOCATE_opts___Option___pretty_default;
-  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;
-  /* ../lib/opts.nit:83 */
-  fra.me.REG[0] = CALL_opts___Option___default_value(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/opts.nit:84 */
-  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)) {
-    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(" (");
-      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_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_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(1);
-      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;
-  }
-  /* ../lib/opts.nit:85 */
-  if (!once_value_4) {
-    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_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];
-  fra.me.REG[1] = fra.me.REG[0];
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_opts___Option___read_param[] = "opts::Option::read_param";
-void opts___Option___read_param(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 88;
-  fra.me.meth = LOCATE_opts___Option___read_param;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:91 */
-  REGB0 = TAG_Bool(1);
-  ATTR_opts___Option____read(fra.me.REG[0]) = REGB0;
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionText___init[] = "opts::OptionText::init";
-void opts___OptionText___init(val_t p0, val_t p1, int* init_table){
-  int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionText].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  if (init_table[itpos1]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 97;
-  fra.me.meth = LOCATE_opts___OptionText___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:97 */
-  CALL_opts___Option___init_opt(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], NIT_NULL, NIT_NULL, init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos1] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionText___pretty[] = "opts::OptionText::(opts::Option::pretty)";
-val_t opts___OptionText___pretty(val_t p0, val_t p1){
-  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_opts;
-  fra.me.line = 99;
-  fra.me.meth = LOCATE_opts___OptionText___pretty;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  REGB0 = p1;
-  /* ../lib/opts.nit:99 */
-  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_opts___OptionText___to_s[] = "opts::OptionText::(string::Object::to_s)";
-val_t opts___OptionText___to_s(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_opts;
-  fra.me.line = 101;
-  fra.me.meth = LOCATE_opts___OptionText___to_s;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:101 */
-  fra.me.REG[0] = CALL_opts___Option___helptext(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_opts___OptionBool___init[] = "opts::OptionBool::init";
-void opts___OptionBool___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionBool].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  if (init_table[itpos2]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 108;
-  fra.me.meth = LOCATE_opts___OptionBool___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* ../lib/opts.nit:108 */
-  fra.me.REG[3] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 108);
-  }
-  REGB0 = TAG_Bool(0);
-  CALL_opts___Option___init_opt(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], REGB0, fra.me.REG[2], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos2] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionBool___read_param[] = "opts::OptionBool::(opts::Option::read_param)";
-void opts___OptionBool___read_param(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 110;
-  fra.me.meth = LOCATE_opts___OptionBool___read_param;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:110 */
-  fra.me.REG[2] = fra.me.REG[0];
-  /* ../lib/opts.nit:112 */
-  CALL_SUPER_opts___OptionBool___read_param(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/opts.nit:113 */
-  REGB0 = TAG_Bool(1);
-  CALL_opts___Option___value__eq(fra.me.REG[2])(fra.me.REG[2], REGB0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionCount___init[] = "opts::OptionCount::init";
-void opts___OptionCount___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionCount].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  if (init_table[itpos3]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 121;
-  fra.me.meth = LOCATE_opts___OptionCount___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* ../lib/opts.nit:121 */
-  fra.me.REG[3] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 121);
-  }
-  REGB0 = TAG_Int(0);
-  CALL_opts___Option___init_opt(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], REGB0, fra.me.REG[2], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos3] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionCount___read_param[] = "opts::OptionCount::(opts::Option::read_param)";
-void opts___OptionCount___read_param(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 123;
-  fra.me.meth = LOCATE_opts___OptionCount___read_param;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:123 */
-  fra.me.REG[2] = fra.me.REG[0];
-  /* ../lib/opts.nit:125 */
-  CALL_SUPER_opts___OptionCount___read_param(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/opts.nit:126 */
-  fra.me.REG[1] = CALL_opts___Option___value(fra.me.REG[2])(fra.me.REG[2]);
-  REGB0 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:245 */
-  REGB0 = TAG_Int(UNTAG_Int(fra.me.REG[1])+UNTAG_Int(REGB0));
-  /* ../lib/opts.nit:126 */
-  CALL_opts___Option___value__eq(fra.me.REG[2])(fra.me.REG[2], REGB0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionParameter___convert[] = "opts::OptionParameter::convert";
-val_t opts___OptionParameter___convert(val_t p0, val_t p1){
-  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_opts;
-  fra.me.line = 133;
-  fra.me.meth = LOCATE_opts___OptionParameter___convert;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 0;
-  fra.me.nitni_local_ref_head = NULL;
-  /* ../lib/opts.nit:133 */
-  nit_abort("Deferred method called", NULL, LOCATE_opts, 133);
-  stack_frame_head = fra.me.prev;
-  return NIT_NULL;
-}
-static const char LOCATE_opts___OptionParameter___parameter_mandatory[] = "opts::OptionParameter::parameter_mandatory";
-val_t opts___OptionParameter___parameter_mandatory(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_opts;
-  fra.me.line = 135;
-  fra.me.meth = LOCATE_opts___OptionParameter___parameter_mandatory;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:135 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_parameter_mandatory", LOCATE_opts, 135);
-  }
-  REGB0 = ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_opts___OptionParameter___parameter_mandatory__eq[] = "opts::OptionParameter::parameter_mandatory=";
-void opts___OptionParameter___parameter_mandatory__eq(val_t p0, val_t p1){
-  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_opts;
-  fra.me.line = 135;
-  fra.me.meth = LOCATE_opts___OptionParameter___parameter_mandatory__eq;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  REGB0 = p1;
-  /* ../lib/opts.nit:135 */
-  ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[0]) = REGB0;
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionParameter___read_param[] = "opts::OptionParameter::(opts::Option::read_param)";
-void opts___OptionParameter___read_param(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 REGB2;
-  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_opts;
-  fra.me.line = 138;
-  fra.me.meth = LOCATE_opts___OptionParameter___read_param;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:138 */
-  fra.me.REG[2] = fra.me.REG[0];
-  fra.me.REG[3] = fra.me.REG[1];
-  /* ../lib/opts.nit:140 */
-  CALL_SUPER_opts___OptionParameter___read_param(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/opts.nit:141 */
-  REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[3])(fra.me.REG[3]);
-  if (UNTAG_Bool(REGB0)) {
-    fra.me.REG[1] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[3])(fra.me.REG[3]);
-    REGB0 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_opts, 141);
-    }
-    fra.me.REG[1] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Char('-');
-    REGB1 = TAG_Bool(IS_EQUAL_ON(REGB0,fra.me.REG[1]));
-    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 {
-        /* ../lib/standard/kernel.nit:434 */
-        REGB0 = TAG_Bool((fra.me.REG[1])==(REGB0));
-        /* ../lib/opts.nit:141 */
-        REGB1 = REGB0;
-      }
-    }
-    REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
-  } else {
-    REGB0 = TAG_Bool(0);
-    REGB1 = REGB0;
-  }
-  if (UNTAG_Bool(REGB1)) {
-    /* ../lib/opts.nit:142 */
-    fra.me.REG[1] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[3])(fra.me.REG[3]);
-    fra.me.REG[1] = CALL_opts___OptionParameter___convert(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-    CALL_opts___Option___value__eq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-    /* ../lib/opts.nit:143 */
-    CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[3])(fra.me.REG[3]);
-  } else {
-    /* ../lib/opts.nit:145 */
-    REGB1 = TAG_Bool(ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[2])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_parameter_mandatory", LOCATE_opts, 145);
-    }
-    REGB1 = ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[2]);
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/opts.nit:146 */
-      REGB1 = TAG_Bool(ATTR_opts___Option____errors(fra.me.REG[2])!=NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 146);
-      }
-      fra.me.REG[3] = ATTR_opts___Option____errors(fra.me.REG[2]);
-      REGB1 = TAG_Int(3);
-      fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB1);
-      if (!once_value_1) {
-        fra.me.REG[0] = BOX_NativeString("Parameter expected for option ");
-        REGB1 = TAG_Int(30);
-        fra.me.REG[0] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[0])(fra.me.REG[0], REGB1);
-        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];
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-      fra.me.REG[2] = CALL_opts___Option___names(fra.me.REG[2])(fra.me.REG[2]);
-      fra.me.REG[2] = CALL_standard___collection___abstract_collection___Collection___first(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]);
-      if (!once_value_2) {
-        fra.me.REG[2] = BOX_NativeString(".");
-        REGB1 = TAG_Int(1);
-        fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB1);
-        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[1])(fra.me.REG[1], fra.me.REG[2]);
-      fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
-    }
-  }
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionParameter___init_opt[] = "opts::OptionParameter::init_opt";
-void opts___OptionParameter___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
-  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionParameter].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[4];} fra;
-  val_t REGB0;
-  val_t tmp;
-  if (init_table[itpos4]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 151;
-  fra.me.meth = LOCATE_opts___OptionParameter___init_opt;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 5;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[4] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  fra.me.REG[3] = p3;
-  /* ../lib/opts.nit:151 */
-  fra.me.REG[4] = fra.me.REG[0];
-  /* ../lib/opts.nit:153 */
-  CALL_opts___Option___init_opt(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], init_table);
-  /* ../lib/opts.nit:154 */
-  REGB0 = TAG_Bool(1);
-  ATTR_opts___OptionParameter____parameter_mandatory(fra.me.REG[4]) = REGB0;
-  stack_frame_head = fra.me.prev;
-  init_table[itpos4] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionString___init[] = "opts::OptionString::init";
-void opts___OptionString___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos5 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionString].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  if (init_table[itpos5]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 162;
-  fra.me.meth = LOCATE_opts___OptionString___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* ../lib/opts.nit:162 */
-  fra.me.REG[3] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 162);
-  }
-  CALL_opts___OptionParameter___init_opt(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], NIT_NULL, fra.me.REG[2], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos5] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionString___convert[] = "opts::OptionString::(opts::OptionParameter::convert)";
-val_t opts___OptionString___convert(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_opts;
-  fra.me.line = 164;
-  fra.me.meth = LOCATE_opts___OptionString___convert;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:164 */
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_opts___OptionEnum___init[] = "opts::OptionEnum::init";
-void opts___OptionEnum___init(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4, int* init_table){
-  int itpos6 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionEnum].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  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 */
-  if (init_table[itpos6]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 172;
-  fra.me.meth = LOCATE_opts___OptionEnum___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 6;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  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;
-  REGB0 = p3;
-  fra.me.REG[3] = p4;
-  /* ../lib/opts.nit:172 */
-  fra.me.REG[4] = fra.me.REG[0];
-  REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[3], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 172);
-  }
-  /* ../lib/standard/collection/array.nit:24 */
-  REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-  }
-  REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/opts.nit:174 */
-  REGB2 = TAG_Int(0);
-  REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-  if (UNTAG_Bool(REGB3)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-  }
-  /* ../lib/standard/kernel.nit:244 */
-  REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-  /* ../lib/opts.nit:174 */
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Assert failed", NULL, LOCATE_opts, 174);
-  }
-  /* ../lib/opts.nit:175 */
-  fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[1])(fra.me.REG[1]);
-  ATTR_opts___OptionEnum____values(fra.me.REG[4]) = fra.me.REG[0];
-  /* ../lib/opts.nit:176 */
-  REGB2 = TAG_Int(5);
-  fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
-  if (!once_value_1) {
-    fra.me.REG[5] = BOX_NativeString("");
-    REGB2 = TAG_Int(0);
-    fra.me.REG[5] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[5])(fra.me.REG[5], REGB2);
-    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[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[2]);
-  if (!once_value_2) {
-    fra.me.REG[2] = BOX_NativeString(" <");
-    REGB2 = TAG_Int(2);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB2);
-    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[0])(fra.me.REG[0], fra.me.REG[2]);
-  if (!once_value_3) {
-    fra.me.REG[2] = BOX_NativeString(", ");
-    REGB2 = TAG_Int(2);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB2);
-    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];
-  fra.me.REG[2] = CALL_standard___string___Collection___join(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-  if (!once_value_4) {
-    fra.me.REG[2] = BOX_NativeString(">");
-    REGB2 = TAG_Int(1);
-    fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB2);
-    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[0])(fra.me.REG[0], fra.me.REG[2]);
-  fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
-  CALL_opts___OptionParameter___init_opt(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[0], REGB0, fra.me.REG[3], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos6] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionEnum___convert[] = "opts::OptionEnum::(opts::OptionParameter::convert)";
-val_t opts___OptionEnum___convert(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 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 */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 179;
-  fra.me.meth = LOCATE_opts___OptionEnum___convert;
-  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;
-  /* ../lib/opts.nit:181 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 181);
-  }
-  fra.me.REG[2] = ATTR_opts___OptionEnum____values(fra.me.REG[0]);
-  REGB0 = CALL_standard___collection___abstract_collection___SequenceRead___index_of(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ../lib/opts.nit:182 */
-  REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:246 */
-  REGB1 = TAG_Int(-UNTAG_Int(REGB1));
-  /* ../lib/opts.nit:182 */
-  REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    /* ../lib/standard/kernel.nit:237 */
-    REGB1 = TAG_Bool((REGB0)==(REGB1));
-    /* ../lib/opts.nit:182 */
-    REGB2 = REGB1;
-  }
-  if (UNTAG_Bool(REGB2)) {
-    /* ../lib/opts.nit:183 */
-    REGB2 = TAG_Int(3);
-    fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
-    if (!once_value_1) {
-      fra.me.REG[2] = BOX_NativeString("Unrecognized value for option ");
-      REGB2 = TAG_Int(30);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB2);
-      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]);
-    REGB2 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_names", LOCATE_opts, 183);
-    }
-    fra.me.REG[2] = ATTR_opts___Option____names(fra.me.REG[0]);
-    if (!once_value_2) {
-      fra.me.REG[3] = BOX_NativeString(", ");
-      REGB2 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB2);
-      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];
-    fra.me.REG[3] = CALL_standard___string___Collection___join(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-    if (!once_value_3) {
-      fra.me.REG[3] = BOX_NativeString(".\n");
-      REGB2 = TAG_Int(2);
-      fra.me.REG[3] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[3])(fra.me.REG[3], REGB2);
-      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[1])(fra.me.REG[1], fra.me.REG[3]);
-    fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
-    /* ../lib/opts.nit:184 */
-    REGB2 = TAG_Int(3);
-    fra.me.REG[3] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
-    if (!once_value_4) {
-      fra.me.REG[2] = BOX_NativeString("Expected values are: ");
-      REGB2 = TAG_Int(21);
-      fra.me.REG[2] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[2])(fra.me.REG[2], REGB2);
-      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]);
-    REGB2 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 184);
-    }
-    fra.me.REG[2] = ATTR_opts___OptionEnum____values(fra.me.REG[0]);
-    if (!once_value_5) {
-      fra.me.REG[4] = BOX_NativeString(", ");
-      REGB2 = TAG_Int(2);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB2);
-      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];
-    fra.me.REG[4] = CALL_standard___string___Collection___join(fra.me.REG[2])(fra.me.REG[2], 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_6) {
-      fra.me.REG[4] = BOX_NativeString(".");
-      REGB2 = TAG_Int(1);
-      fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB2);
-      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]);
-    fra.me.REG[3] = CALL_standard___string___String_____plus(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-    fra.me.REG[1] = fra.me.REG[3];
-    /* ../lib/opts.nit:185 */
-    REGB2 = TAG_Bool(ATTR_opts___Option____errors(fra.me.REG[0])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 185);
-    }
-    fra.me.REG[0] = ATTR_opts___Option____errors(fra.me.REG[0]);
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  }
-  /* ../lib/opts.nit:187 */
-  goto label7;
-  label7: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_opts___OptionEnum___value_name[] = "opts::OptionEnum::value_name";
-val_t opts___OptionEnum___value_name(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 190;
-  fra.me.meth = LOCATE_opts___OptionEnum___value_name;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:190 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 190);
-  }
-  fra.me.REG[1] = ATTR_opts___OptionEnum____values(fra.me.REG[0]);
-  fra.me.REG[0] = CALL_opts___Option___value(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:279 */
-  REGB0 = fra.me.REG[0];
-  /* ../lib/standard/collection/array.nit:281 */
-  REGB1 = TAG_Int(0);
-  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:243 */
-  REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:281 */
-  if (UNTAG_Bool(REGB1)) {
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-  } else {
-    /* ../lib/standard/collection/array.nit:281 */
-    REGB2 = TAG_Bool(0);
-    REGB1 = REGB2;
-  }
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
-  }
-  /* ../lib/standard/collection/array.nit:282 */
-  fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
-  }
-  /* ../lib/standard/collection/array.nit:725 */
-  fra.me.REG[1] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB0)];
-  /* ../lib/standard/collection/array.nit:282 */
-  goto label1;
-  label1: while(0);
-  /* ../lib/opts.nit:190 */
-  goto label2;
-  label2: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}
-static const char LOCATE_opts___OptionEnum___pretty_default[] = "opts::OptionEnum::(opts::Option::pretty_default)";
-val_t opts___OptionEnum___pretty_default(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} 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_3; /* Once value */
-    static val_t once_value_5; /* Once value */
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 192;
-  fra.me.meth = LOCATE_opts___OptionEnum___pretty_default;
-  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;
-  /* ../lib/opts.nit:192 */
-  fra.me.REG[1] = fra.me.REG[0];
-  /* ../lib/opts.nit:194 */
-  fra.me.REG[2] = CALL_opts___Option___default_value(fra.me.REG[1])(fra.me.REG[1]);
-  REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      REGB1 = TAG_Bool(0);
-      REGB0 = REGB1;
-    } else {
-      /* ../lib/standard/kernel.nit:237 */
-      REGB1 = TAG_Bool((fra.me.REG[2])==(NIT_NULL));
-      /* ../lib/opts.nit:194 */
-      REGB0 = REGB1;
-    }
-  }
-  REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
-  if (UNTAG_Bool(REGB0)) {
-    /* ../lib/opts.nit:195 */
-    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(2);
-      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]);
-    REGB0 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 195);
-    }
-    fra.me.REG[3] = ATTR_opts___OptionEnum____values(fra.me.REG[1]);
-    fra.me.REG[1] = CALL_opts___Option___default_value(fra.me.REG[1])(fra.me.REG[1]);
-    REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], VTCOLOR_opts___Option___VALUE(fra.me.REG[0]), VTID_opts___Option___VALUE(fra.me.REG[0]))) /*cast VALUE*/;
-    if (UNTAG_Bool(REGB0)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_opts, 195);
-    }
-    /* ../lib/standard/collection/array.nit:279 */
-    REGB0 = fra.me.REG[1];
-    /* ../lib/standard/collection/array.nit:281 */
-    REGB1 = TAG_Int(0);
-    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:243 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:281 */
-    if (UNTAG_Bool(REGB1)) {
-      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, 281);
-      }
-      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));
-    } else {
-      /* ../lib/standard/collection/array.nit:281 */
-      REGB2 = TAG_Bool(0);
-      REGB1 = REGB2;
-    }
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
-    }
-    /* ../lib/standard/collection/array.nit:282 */
-    fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-    REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
-    }
-    /* ../lib/standard/collection/array.nit:725 */
-    fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB0)];
-    /* ../lib/standard/collection/array.nit:282 */
-    goto label2;
-    label2: while(0);
-    /* ../lib/opts.nit:195 */
-    CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-    if (!once_value_3) {
-      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_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]);
-    fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
-    goto label4;
-  } else {
-    /* ../lib/opts.nit:197 */
-    if (!once_value_5) {
-      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_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];
-    fra.me.REG[2] = fra.me.REG[3];
-    goto label4;
-  }
-  label4: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[2];
-}
-static const char LOCATE_opts___OptionInt___init[] = "opts::OptionInt::init";
-void opts___OptionInt___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_table){
-  int itpos7 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionInt].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t tmp;
-  if (init_table[itpos7]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 206;
-  fra.me.meth = LOCATE_opts___OptionInt___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  REGB0 = p2;
-  fra.me.REG[2] = p3;
-  /* ../lib/opts.nit:206 */
-  fra.me.REG[3] = fra.me.REG[0];
-  REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 206);
-  }
-  CALL_opts___OptionParameter___init_opt(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], REGB0, fra.me.REG[2], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos7] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionInt___convert[] = "opts::OptionInt::(opts::OptionParameter::convert)";
-val_t opts___OptionInt___convert(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 208;
-  fra.me.meth = LOCATE_opts___OptionInt___convert;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:208 */
-  REGB0 = CALL_standard___string___AbstractString___to_i(fra.me.REG[1])(fra.me.REG[1]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return REGB0;
-}
-static const char LOCATE_opts___OptionArray___init[] = "opts::OptionArray::init";
-void opts___OptionArray___init(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos8 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionArray].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
-  val_t REGB0;
-  val_t tmp;
-  if (init_table[itpos8]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 215;
-  fra.me.meth = LOCATE_opts___OptionArray___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 4;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[3] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  fra.me.REG[2] = p2;
-  /* ../lib/opts.nit:215 */
-  fra.me.REG[3] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 215);
-  }
-  /* ../lib/opts.nit:217 */
-  fra.me.REG[0] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_opts___OptionArray____values(fra.me.REG[3]) = fra.me.REG[0];
-  /* ../lib/opts.nit:218 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[3])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 218);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionArray____values(fra.me.REG[3]);
-  CALL_opts___OptionParameter___init_opt(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1], fra.me.REG[0], fra.me.REG[2], init_table);
-  stack_frame_head = fra.me.prev;
-  init_table[itpos8] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionArray___convert[] = "opts::OptionArray::(opts::OptionParameter::convert)";
-val_t opts___OptionArray___convert(val_t p0, val_t p1){
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
-  val_t REGB0;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 222;
-  fra.me.meth = LOCATE_opts___OptionArray___convert;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 3;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[2] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:224 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 224);
-  }
-  fra.me.REG[2] = ATTR_opts___OptionArray____values(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ../lib/opts.nit:225 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_values", LOCATE_opts, 225);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionArray____values(fra.me.REG[0]);
-  goto label1;
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___OptionContext___options[] = "opts::OptionContext::options";
-val_t opts___OptionContext___options(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_opts;
-  fra.me.line = 230;
-  fra.me.meth = LOCATE_opts___OptionContext___options;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:230 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 230);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___OptionContext___rest[] = "opts::OptionContext::rest";
-val_t opts___OptionContext___rest(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_opts;
-  fra.me.line = 231;
-  fra.me.meth = LOCATE_opts___OptionContext___rest;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:231 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____rest(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_rest", LOCATE_opts, 231);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionContext____rest(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___OptionContext___errors[] = "opts::OptionContext::errors";
-val_t opts___OptionContext___errors(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_opts;
-  fra.me.line = 232;
-  fra.me.meth = LOCATE_opts___OptionContext___errors;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 1;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:232 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____errors(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 232);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionContext____errors(fra.me.REG[0]);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[0];
-}
-static const char LOCATE_opts___OptionContext___usage[] = "opts::OptionContext::usage";
-void opts___OptionContext___usage(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  val_t REGB4;
-  val_t REGB5;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 236;
-  fra.me.meth = LOCATE_opts___OptionContext___usage;
-  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;
-  /* ../lib/opts.nit:238 */
-  REGB0 = TAG_Int(1);
-  /* ../lib/opts.nit:239 */
-  REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 239);
-  }
-  fra.me.REG[1] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB1 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB3)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB1)];
-      /* ../lib/opts.nit:240 */
-      REGB2 = TAG_Int(3);
-      /* ../lib/opts.nit:241 */
-      fra.me.REG[3] = CALL_opts___Option___names(fra.me.REG[3])(fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:270 */
-      REGB3 = TAG_Int(0);
-      /* ../lib/standard/collection/array.nit:271 */
-      REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-      if (UNTAG_Bool(REGB4)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-      }
-      REGB4 = 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 */
-        REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-        if (UNTAG_Bool(REGB4)) {
-        } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-        }
-        REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-        REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
-        if (UNTAG_Bool(REGB5)) {
-        } else {
-          nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-        }
-        /* ../lib/standard/kernel.nit:242 */
-        REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
-        /* ../lib/standard/collection/array.nit:273 */
-        if (UNTAG_Bool(REGB4)) {
-          /* ../lib/standard/collection/array.nit:274 */
-          REGB4 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-          if (UNTAG_Bool(REGB4)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-          }
-          /* ../lib/standard/collection/array.nit:725 */
-          fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB3)];
-          /* ../lib/standard/collection/array.nit:24 */
-          REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
-          if (UNTAG_Bool(REGB4)) {
-          } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-          }
-          REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
-          /* ../lib/opts.nit:242 */
-          REGB5 = TAG_Int(2);
-          /* ../lib/standard/kernel.nit:245 */
-          REGB5 = TAG_Int(UNTAG_Int(REGB4)+UNTAG_Int(REGB5));
-          REGB5 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB5));
-          /* ../lib/opts.nit:242 */
-          REGB2 = REGB5;
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB5 = TAG_Int(1);
-          /* ../lib/standard/kernel.nit:245 */
-          REGB5 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB5));
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB3 = REGB5;
-        } else {
-          /* ../lib/standard/collection/array.nit:273 */
-          goto label1;
-        }
-      }
-      label1: while(0);
-      REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-      if (UNTAG_Bool(REGB3)) {
-      } else {
-        nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-      }
-      /* ../lib/standard/kernel.nit:242 */
-      REGB3 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
-      /* ../lib/opts.nit:244 */
-      if (UNTAG_Bool(REGB3)) {
-        REGB0 = REGB2;
-      }
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = REGB2;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  /* ../lib/opts.nit:247 */
-  REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 247);
-  }
-  fra.me.REG[2] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB1 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-    REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB3)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB2 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[4] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB1)];
-      /* ../lib/opts.nit:248 */
-      fra.me.REG[4] = CALL_opts___Option___pretty(fra.me.REG[4])(fra.me.REG[4], REGB0);
-      CALL_standard___file___Object___print(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = REGB2;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label3;
-    }
-  }
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionContext___parse[] = "opts::OptionContext::parse";
-void opts___OptionContext___parse(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_opts;
-  fra.me.line = 252;
-  fra.me.meth = LOCATE_opts___OptionContext___parse;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  fra.me.REG[1] = p1;
-  /* ../lib/opts.nit:255 */
-  fra.me.REG[1] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[1])(fra.me.REG[1]);
-  /* ../lib/opts.nit:256 */
-  CALL_opts___OptionContext___parse_intern(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionContext___parse_intern[] = "opts::OptionContext::parse_intern";
-void opts___OptionContext___parse_intern(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 REGB2;
-  val_t REGB3;
-  val_t REGB4;
-  val_t REGB5;
-  val_t tmp;
-      static val_t once_value_1; /* Once value */
-              static val_t once_value_2; /* 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_opts;
-  fra.me.line = 259;
-  fra.me.meth = LOCATE_opts___OptionContext___parse_intern;
-  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;
-  /* ../lib/opts.nit:261 */
-  REGB0 = TAG_Bool(1);
-  /* ../lib/opts.nit:262 */
-  CALL_opts___OptionContext___build(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/opts.nit:263 */
-  REGB1 = TAG_Bool(ATTR_opts___OptionContext____rest(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_rest", LOCATE_opts, 263);
-  }
-  fra.me.REG[2] = ATTR_opts___OptionContext____rest(fra.me.REG[0]);
-  /* ../lib/opts.nit:265 */
-  while(1) {
-    if (UNTAG_Bool(REGB0)) {
-      REGB1 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[1])(fra.me.REG[1]);
-    } else {
-      REGB2 = TAG_Bool(0);
-      REGB1 = REGB2;
-    }
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/opts.nit:266 */
-      fra.me.REG[3] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[1])(fra.me.REG[1]);
-      /* ../lib/opts.nit:267 */
-      if (!once_value_1) {
-        fra.me.REG[4] = BOX_NativeString("--");
-        REGB1 = TAG_Int(2);
-        fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB1);
-        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];
-      REGB1 = TAG_Bool(IS_EQUAL_OO(fra.me.REG[3],fra.me.REG[4]));
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[4]);
-        REGB1 = REGB2;
-      }
-      if (UNTAG_Bool(REGB1)) {
-        /* ../lib/opts.nit:268 */
-        CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-        /* ../lib/opts.nit:269 */
-        fra.me.REG[4] = CALL_standard___collection___array___Iterator___to_a(fra.me.REG[1])(fra.me.REG[1]);
-        CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-        /* ../lib/opts.nit:270 */
-        REGB1 = TAG_Bool(0);
-        REGB0 = REGB1;
-      } else {
-        /* ../lib/opts.nit:273 */
-        REGB1 = TAG_Char('-');
-        REGB1 = CALL_standard___collection___array___AbstractArrayRead___last_index_of(fra.me.REG[3])(fra.me.REG[3], REGB1);
-        REGB2 = TAG_Int(0);
-        REGB3 = TAG_Bool(IS_EQUAL_OO(REGB1,REGB2));
-        if (UNTAG_Bool(REGB3)) {
-        } else {
-          /* ../lib/standard/kernel.nit:237 */
-          REGB2 = TAG_Bool((REGB1)==(REGB2));
-          /* ../lib/opts.nit:273 */
-          REGB3 = REGB2;
-        }
-        if (UNTAG_Bool(REGB3)) {
-          /* ../lib/standard/collection/array.nit:24 */
-          REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-          if (UNTAG_Bool(REGB3)) {
-          } else {
-            nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-          }
-          REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-          /* ../lib/opts.nit:273 */
-          REGB2 = TAG_Int(2);
-          REGB1 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
-          if (UNTAG_Bool(REGB1)) {
-          } else {
-            nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-          }
-          /* ../lib/standard/kernel.nit:244 */
-          REGB2 = TAG_Bool(UNTAG_Int(REGB3)>UNTAG_Int(REGB2));
-        } else {
-          /* ../lib/opts.nit:273 */
-          REGB3 = TAG_Bool(0);
-          REGB2 = REGB3;
-        }
-        if (UNTAG_Bool(REGB2)) {
-          /* ../lib/opts.nit:274 */
-          REGB2 = TAG_Bool(0);
-          /* ../lib/opts.nit:275 */
-          REGB3 = TAG_Int(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]);
-          /* ../lib/standard/kernel.nit:393 */
-          while(1) {
-            REGB4 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
-            if (UNTAG_Bool(REGB4)) {
-            } else {
-              nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-            }
-            /* ../lib/standard/kernel.nit:241 */
-            REGB4 = TAG_Bool(UNTAG_Int(REGB3)<=UNTAG_Int(REGB1));
-            /* ../lib/standard/kernel.nit:393 */
-            if (UNTAG_Bool(REGB4)) {
-              /* ../lib/opts.nit:275 */
-              REGB4 = REGB3;
-              /* ../lib/opts.nit:276 */
-              if (!once_value_2) {
-               fra.me.REG[4] = BOX_NativeString("-");
-               REGB5 = TAG_Int(1);
-               fra.me.REG[4] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[4])(fra.me.REG[4], REGB5);
-               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];
-              REGB4 = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[3])(fra.me.REG[3], REGB4);
-              fra.me.REG[5] = CALL_standard___string___Object___to_s(REGB4)(REGB4);
-              fra.me.REG[5] = CALL_standard___string___String_____plus(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-              /* ../lib/opts.nit:277 */
-              REGB4 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
-              if (UNTAG_Bool(REGB4)) {
-              } else {
-               nit_abort("Uninitialized attribute %s", "_optmap", LOCATE_opts, 277);
-              }
-              fra.me.REG[4] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
-              REGB4 = CALL_standard___collection___abstract_collection___MapRead___has_key(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-              if (UNTAG_Bool(REGB4)) {
-               /* ../lib/opts.nit:278 */
-               REGB4 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
-               if (UNTAG_Bool(REGB4)) {
-               } else {
-               nit_abort("Uninitialized attribute %s", "_optmap", LOCATE_opts, 278);
-               }
-               fra.me.REG[4] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
-               fra.me.REG[5] = CALL_standard___collection___abstract_collection___MapRead_____bra(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[5]);
-               /* ../lib/opts.nit:279 */
-               REGB4 = TAG_Bool(VAL_ISA(fra.me.REG[5], COLOR_opts___OptionParameter, ID_opts___OptionParameter)) /*cast OptionParameter*/;
-               if (UNTAG_Bool(REGB4)) {
-               /* ../lib/opts.nit:280 */
-               CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-               /* ../lib/opts.nit:281 */
-               REGB4 = TAG_Bool(1);
-               REGB2 = REGB4;
-               }
-               /* ../lib/opts.nit:283 */
-               CALL_opts___Option___read_param(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[1]);
-              }
-              /* ../lib/standard/kernel.nit:395 */
-              REGB4 = TAG_Int(1);
-              /* ../lib/standard/kernel.nit:245 */
-              REGB4 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB4));
-              /* ../lib/standard/kernel.nit:395 */
-              REGB3 = REGB4;
-            } else {
-              /* ../lib/standard/kernel.nit:393 */
-              goto label3;
-            }
-          }
-          label3: while(0);
-          /* ../lib/opts.nit:286 */
-          REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
-          if (UNTAG_Bool(REGB2)) {
-            CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-          }
-        } else {
-          /* ../lib/opts.nit:288 */
-          REGB2 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
-          if (UNTAG_Bool(REGB2)) {
-          } else {
-            nit_abort("Uninitialized attribute %s", "_optmap", LOCATE_opts, 288);
-          }
-          fra.me.REG[5] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
-          REGB2 = CALL_standard___collection___abstract_collection___MapRead___has_key(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-          if (UNTAG_Bool(REGB2)) {
-            /* ../lib/opts.nit:289 */
-            REGB2 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
-            if (UNTAG_Bool(REGB2)) {
-            } else {
-              nit_abort("Uninitialized attribute %s", "_optmap", LOCATE_opts, 289);
-            }
-            fra.me.REG[5] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
-            fra.me.REG[3] = CALL_standard___collection___abstract_collection___MapRead_____bra(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[3]);
-            /* ../lib/opts.nit:290 */
-            CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-            /* ../lib/opts.nit:291 */
-            CALL_opts___Option___read_param(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
-          } else {
-            /* ../lib/opts.nit:293 */
-            fra.me.REG[3] = CALL_standard___collection___abstract_collection___Iterator___item(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[3]);
-            /* ../lib/opts.nit:294 */
-            CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-          }
-        }
-      }
-    } else {
-      /* ../lib/opts.nit:265 */
-      goto label4;
-    }
-  }
-  label4: while(0);
-  /* ../lib/opts.nit:300 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 300);
-  }
-  fra.me.REG[1] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB2)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB3)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/opts.nit:301 */
-      REGB2 = CALL_opts___Option___mandatory(fra.me.REG[3])(fra.me.REG[3]);
-      if (UNTAG_Bool(REGB2)) {
-        REGB2 = CALL_opts___Option___read(fra.me.REG[3])(fra.me.REG[3]);
-        REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
-      } else {
-        REGB3 = TAG_Bool(0);
-        REGB2 = REGB3;
-      }
-      if (UNTAG_Bool(REGB2)) {
-        /* ../lib/opts.nit:302 */
-        REGB2 = TAG_Bool(ATTR_opts___OptionContext____errors(fra.me.REG[0])!=NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-        } else {
-          nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 302);
-        }
-        fra.me.REG[5] = ATTR_opts___OptionContext____errors(fra.me.REG[0]);
-        REGB2 = TAG_Int(3);
-        fra.me.REG[4] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
-        if (!once_value_5) {
-          fra.me.REG[6] = BOX_NativeString("Mandatory option ");
-          REGB2 = TAG_Int(17);
-          fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB2);
-          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[3] = CALL_opts___Option___names(fra.me.REG[3])(fra.me.REG[3]);
-        if (!once_value_6) {
-          fra.me.REG[6] = BOX_NativeString(", ");
-          REGB2 = TAG_Int(2);
-          fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB2);
-          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];
-        fra.me.REG[6] = CALL_standard___string___Collection___join(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[6]);
-        CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[6]);
-        if (!once_value_7) {
-          fra.me.REG[6] = BOX_NativeString(" not found.");
-          REGB2 = TAG_Int(11);
-          fra.me.REG[6] = CALL_standard___string___NativeString___to_s_with_length(fra.me.REG[6])(fra.me.REG[6], REGB2);
-          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_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[5])(fra.me.REG[5], fra.me.REG[4]);
-      }
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB0 = REGB2;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label8;
-    }
-  }
-  label8: while(0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionContext___add_option[] = "opts::OptionContext::add_option";
-void opts___OptionContext___add_option(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 REGB2;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 307;
-  fra.me.meth = LOCATE_opts___OptionContext___add_option;
-  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;
-  /* ../lib/opts.nit:307 */
-  fra.me.REG[2] = fra.me.REG[0];
-  REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[Option]*/;
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Cast failed", NULL, LOCATE_opts, 307);
-  }
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB1 = TAG_Bool(fra.me.REG[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[3] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-      /* ../lib/opts.nit:310 */
-      REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[2])!=NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 310);
-      }
-      fra.me.REG[4] = ATTR_opts___OptionContext____options(fra.me.REG[2]);
-      CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB0 = REGB1;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label1;
-    }
-  }
-  label1: while(0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionContext___init[] = "opts::OptionContext::init";
-void opts___OptionContext___init(val_t p0, int* init_table){
-  int itpos9 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_opts___OptionContext].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
-  val_t tmp;
-  if (init_table[itpos9]) return;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 314;
-  fra.me.meth = LOCATE_opts___OptionContext___init;
-  fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
-  fra.me.nitni_local_ref_head = NULL;
-  fra.me.REG[0] = NIT_NULL;
-  fra.me.REG[1] = NIT_NULL;
-  fra.me.REG[0] = p0;
-  /* ../lib/opts.nit:316 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_opts___OptionContext____options(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/opts.nit:317 */
-  fra.me.REG[1] = NEW_HashMap_standard___collection___hash_collection___HashMap___init();
-  ATTR_opts___OptionContext____optmap(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/opts.nit:318 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_opts___OptionContext____rest(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/opts.nit:319 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  ATTR_opts___OptionContext____errors(fra.me.REG[0]) = fra.me.REG[1];
-  stack_frame_head = fra.me.prev;
-  init_table[itpos9] = 1;
-  return;
-}
-static const char LOCATE_opts___OptionContext___build[] = "opts::OptionContext::build";
-void opts___OptionContext___build(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[7];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 322;
-  fra.me.meth = LOCATE_opts___OptionContext___build;
-  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;
-  /* ../lib/opts.nit:324 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 324);
-  }
-  fra.me.REG[1] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:270 */
-  REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:271 */
-  REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-  if (UNTAG_Bool(REGB1)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-  }
-  REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:273 */
-  while(1) {
-    /* ../lib/standard/collection/array.nit:24 */
-    REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
-    if (UNTAG_Bool(REGB1)) {
-    } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-    }
-    REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-    REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/opts.nit:325 */
-      fra.me.REG[4] = CALL_opts___Option___names(fra.me.REG[3])(fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:270 */
-      REGB1 = TAG_Int(0);
-      /* ../lib/standard/collection/array.nit:271 */
-      REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-      }
-      REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[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 */
-        REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-        } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-        }
-        REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-        REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-        if (UNTAG_Bool(REGB3)) {
-        } else {
-          nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-        }
-        /* ../lib/standard/kernel.nit:242 */
-        REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-        /* ../lib/standard/collection/array.nit:273 */
-        if (UNTAG_Bool(REGB2)) {
-          /* ../lib/standard/collection/array.nit:274 */
-          REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
-          if (UNTAG_Bool(REGB2)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-          }
-          /* ../lib/standard/collection/array.nit:725 */
-          fra.me.REG[6] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB1)];
-          /* ../lib/opts.nit:326 */
-          REGB2 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
-          if (UNTAG_Bool(REGB2)) {
-          } else {
-            nit_abort("Uninitialized attribute %s", "_optmap", LOCATE_opts, 326);
-          }
-          fra.me.REG[7] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
-          CALL_standard___collection___abstract_collection___Map_____braeq(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[6], fra.me.REG[3]);
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB2 = TAG_Int(1);
-          /* ../lib/standard/kernel.nit:245 */
-          REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB1 = REGB2;
-        } else {
-          /* ../lib/standard/collection/array.nit:273 */
-          goto label1;
-        }
-      }
-      label1: while(0);
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB0 = REGB1;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  stack_frame_head = fra.me.prev;
-  return;
-}
-static const char LOCATE_opts___OptionContext___get_errors[] = "opts::OptionContext::get_errors";
-val_t opts___OptionContext___get_errors(val_t p0){
-  struct {struct stack_frame_t me; val_t MORE_REG[5];} fra;
-  val_t REGB0;
-  val_t REGB1;
-  val_t REGB2;
-  val_t REGB3;
-  val_t tmp;
-  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
-  fra.me.file = LOCATE_opts;
-  fra.me.line = 331;
-  fra.me.meth = LOCATE_opts___OptionContext___get_errors;
-  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;
-  /* ../lib/opts.nit:333 */
-  fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  /* ../lib/opts.nit:335 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____errors(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_errors", LOCATE_opts, 335);
-  }
-  fra.me.REG[2] = ATTR_opts___OptionContext____errors(fra.me.REG[0]);
-  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-  /* ../lib/opts.nit:337 */
-  REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
-  if (UNTAG_Bool(REGB0)) {
-  } else {
-    nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 337);
-  }
-  fra.me.REG[0] = ATTR_opts___OptionContext____options(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[0])!=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[0]);
-  /* ../lib/standard/collection/array.nit:272 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
-  /* ../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[0])!=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[0]);
-    REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
-    if (UNTAG_Bool(REGB2)) {
-    } else {
-      nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-    }
-    /* ../lib/standard/kernel.nit:242 */
-    REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:273 */
-    if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:274 */
-      REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
-      if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-      }
-      /* ../lib/standard/collection/array.nit:725 */
-      fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/opts.nit:338 */
-      fra.me.REG[3] = CALL_opts___Option___errors(fra.me.REG[3])(fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:270 */
-      REGB1 = TAG_Int(0);
-      /* ../lib/standard/collection/array.nit:271 */
-      REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-      if (UNTAG_Bool(REGB2)) {
-      } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
-      }
-      REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:272 */
-      fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-      /* ../lib/standard/collection/array.nit:273 */
-      while(1) {
-        /* ../lib/standard/collection/array.nit:24 */
-        REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
-        if (UNTAG_Bool(REGB2)) {
-        } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
-        }
-        REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-        REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
-        if (UNTAG_Bool(REGB3)) {
-        } else {
-          nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
-        }
-        /* ../lib/standard/kernel.nit:242 */
-        REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-        /* ../lib/standard/collection/array.nit:273 */
-        if (UNTAG_Bool(REGB2)) {
-          /* ../lib/standard/collection/array.nit:274 */
-          REGB2 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
-          if (UNTAG_Bool(REGB2)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
-          }
-          /* ../lib/standard/collection/array.nit:725 */
-          fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB1)];
-          /* ../lib/opts.nit:339 */
-          CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[5]);
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB2 = TAG_Int(1);
-          /* ../lib/standard/kernel.nit:245 */
-          REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-          /* ../lib/standard/collection/array.nit:275 */
-          REGB1 = REGB2;
-        } else {
-          /* ../lib/standard/collection/array.nit:273 */
-          goto label1;
-        }
-      }
-      label1: while(0);
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB1 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:245 */
-      REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:275 */
-      REGB0 = REGB1;
-    } else {
-      /* ../lib/standard/collection/array.nit:273 */
-      goto label2;
-    }
-  }
-  label2: while(0);
-  /* ../lib/opts.nit:343 */
-  goto label3;
-  label3: while(0);
-  stack_frame_head = fra.me.prev;
-  return fra.me.REG[1];
-}