add mruby sources

11 files changed, 1114 insertions, 0 deletions

diff --git a/include/mrbconf.h b/include/mrbconf.h
new file mode 100644
index 000000000..d4802a5e7
--- /dev/null
+++ b/include/mrbconf.h
@@ -0,0 +1,42 @@
+#ifndef MRUBYCONF_H
+#define MRUBYCONF_H
+
+#include <stdint.h>
+typedef double mrb_float;
+typedef int32_t mrb_int;
+typedef intptr_t mrb_sym;
+
+#define readint(p,base) strtol((p),NULL,(base))
+#define readfloat(p) strtod((p),NULL)
+
+#undef  INCLUDE_ENCODING   /* not use encoding classes (ascii only) */
+#define INCLUDE_ENCODING   /* use UTF-8 encoding classes */
+
+#undef  INCLUDE_REGEXP     /* not use regular expression classes */
+#define INCLUDE_REGEXP     /* use regular expression classes */
+
+#ifdef  INCLUDE_REGEXP
+# define INCLUDE_ENCODING  /* Regexp depends Encoding */
+#endif
+
+#undef  HAVE_UNISTD_H /* WINDOWS */
+#define HAVE_UNISTD_H /* LINUX */
+
+#define SIZEOF_INT              4
+#define SIZEOF_SHORT            2
+#define SIZEOF_LONG             4
+#define SIZEOF_LONG_LONG        8
+#define SIZEOF___INT64          0
+#define SIZEOF_VOIDP            4
+#define SIZEOF_FLOAT            4
+#define SIZEOF_DOUBLE           8
+
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+
+#endif	/* MRUBYCONF_H */
diff --git a/include/mruby.h b/include/mruby.h
new file mode 100644
index 000000000..506158d3c
--- /dev/null
+++ b/include/mruby.h
@@ -0,0 +1,623 @@
+#ifndef MRUBY_H
+#define MRUBY_H
+
+#include <stdlib.h>
+#include "mrbconf.h"
+
+enum mrb_vtype {
+  MRB_TT_FALSE = 0,   /*   0 */
+  MRB_TT_FREE,	      /*   1 */
+  MRB_TT_TRUE,        /*   2 */
+  MRB_TT_FIXNUM,      /*   3 */
+  MRB_TT_SYMBOL,      /*   4 */
+  MRB_TT_UNDEF,       /*   5 */
+  MRB_TT_FLOAT,       /*   6 */
+  MRB_TT_OBJECT,      /*   7 */
+  MRB_TT_CLASS,       /*   8 */
+  MRB_TT_MODULE,      /*   9 */
+  MRB_TT_ICLASS,      /*  10 */
+  MRB_TT_SCLASS,      /*  11 */
+  MRB_TT_PROC,        /*  12 */
+  MRB_TT_ARRAY,       /*  13 */
+  MRB_TT_HASH,        /*  14 */
+  MRB_TT_STRING,      /*  15 */
+  MRB_TT_RANGE,       /*  16 */
+  MRB_TT_REGEX,       /*  17 */
+  MRB_TT_STRUCT,      /*  18 */
+  MRB_TT_EXCEPTION,   /*  19 */
+  MRB_TT_MATCH,       /*  20 */
+  MRB_TT_FILE,        /*  21 */
+  MRB_TT_ENV,         /*  22 */
+  MRB_TT_DATA,        /*  23 */
+  MRB_TT_THREAD,      /*  24 */
+  MRB_TT_THREADGRP,   /*  25 */
+  MRB_TT_MAXDEFINE    /*  26 */
+};
+
+typedef struct mrb_value {
+  union {
+    mrb_float f;
+    void *p;
+    mrb_int i;
+    mrb_sym sym;
+  } value;
+  enum mrb_vtype tt:8;
+} mrb_value;
+
+#define mrb_type(o)   (o).tt
+#define mrb_nil_p(o)  ((o).tt == MRB_TT_FALSE && !(o).value.i)
+#define mrb_test(o)   ((o).tt != MRB_TT_FALSE)
+#define mrb_fixnum(o) (o).value.i
+#define mrb_float(o)  (o).value.f
+#define mrb_symbol(o)  (o).value.sym
+#define mrb_object(o) (o).value.p
+#define FIXNUM_P(o)   ((o).tt == MRB_TT_FIXNUM)
+#define UNDEF_P(o)    ((o).tt == MRB_TT_UNDEF)
+
+#include "mruby/object.h"
+
+#define IMMEDIATE_P(x) ((mrb_type(x) >= MRB_TT_FALSE) && (mrb_type(x) <= MRB_TT_FLOAT))
+#define SPECIAL_CONST_P(x) IMMEDIATE_P(x)
+#define SYMBOL_P(o) (mrb_type(o) == MRB_TT_SYMBOL)
+#define RTEST(o) mrb_test(o)
+
+#define FL_ABLE(x) (!SPECIAL_CONST_P(x))
+#define FL_TEST(x,f) (FL_ABLE(x)?(RBASIC(x)->flags&(f)):0)
+#define FL_ANY(x,f) FL_TEST(x,f)
+#define FL_ALL(x,f) (FL_TEST(x,f) == (f))
+#define FL_SET(x,f) do {if (FL_ABLE(x)) RBASIC(x)->flags |= (f);} while (0)
+#define FL_UNSET(x,f) do {if (FL_ABLE(x)) RBASIC(x)->flags &= ~(f);} while (0)
+
+static inline mrb_int
+mrb_special_const_p(mrb_value obj)
+{
+  if (SPECIAL_CONST_P(obj)) return 1;
+  return 0;
+}
+static inline mrb_value
+mrb_fixnum_value(mrb_int i)
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_FIXNUM;
+  v.value.i = i;
+  return v;
+}
+
+static inline mrb_value
+mrb_float_value(mrb_float f)
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_FLOAT;
+  v.value.f = f;
+  return v;
+}
+
+static inline mrb_value
+mrb_symbol_value(mrb_sym i)
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_SYMBOL;
+  v.value.sym = i;
+  return v;
+}
+
+static inline mrb_value
+mrb_obj_value(void *p)
+{
+  mrb_value v;
+  struct RBasic *b = p;
+
+  v.tt = b->tt;
+  v.value.p = p;
+  return v;
+}
+
+static inline mrb_value
+mrb_false_value()
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_FALSE;
+  v.value.i = 1;
+  return v;
+}
+
+static inline mrb_value
+mrb_nil_value()
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_FALSE;
+  v.value.p = 0;
+  return v;
+}
+
+static inline mrb_value
+mrb_true_value()
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_TRUE;
+  v.value.i = 1;
+  return v;
+}
+
+static inline mrb_value
+mrb_undef_value()
+{
+  mrb_value v;
+
+  v.tt = MRB_TT_UNDEF;
+  v.value.i = 0;
+  return v;
+}
+
+typedef int32_t mrb_code;
+
+struct mrb_state;
+
+typedef void* (*mrb_allocf) (struct mrb_state *mrb, void*, size_t);
+
+#define MRB_ARENA_SIZE 1024  //256 up kusuda 2011/04/30
+#define ruby_debug   (mrb_nil_value())
+#define ruby_verbose (mrb_nil_value())
+
+typedef struct {
+  mrb_sym mid;
+  struct RProc *proc;
+  int stackidx;
+  int nregs;
+  int argc;
+  mrb_code *pc;
+  int acc;
+  struct RClass *target_class;
+  int ridx;
+  int eidx;
+  struct REnv *env;
+} mrb_callinfo;
+
+enum gc_state {
+  GC_STATE_NONE = 0,
+  GC_STATE_MARK,
+  GC_STATE_SWEEP
+};
+
+typedef struct mrb_state {
+  void *jmp;
+
+  mrb_allocf allocf;
+
+  mrb_value *stack;
+  mrb_value *stbase, *stend;
+
+  mrb_callinfo *ci;
+  mrb_callinfo *cibase, *ciend;
+
+  mrb_code **rescue;
+  int rsize;
+  struct RProc **ensure;
+  int esize;
+
+  struct RObject *exc;
+  struct kh_iv *globals;
+
+  struct mrb_irep **irep;
+  size_t irep_len, irep_capa;
+
+  struct RClass *object_class;
+  struct RClass *class_class;
+  struct RClass *module_class;
+  struct RClass *proc_class;
+  struct RClass *string_class;
+  struct RClass *array_class;
+  struct RClass *hash_class;
+  struct RClass *range_class;
+#ifdef INCLUDE_REGEXP
+  struct RClass *regex_class;
+  struct RClass *match_class;
+#endif
+#ifdef INCLUDE_ENCODING
+  struct RClass *encode_class;
+  struct RClass *converter_class;
+#endif
+
+  struct RClass *float_class;
+  struct RClass *fixnum_class;
+  struct RClass *true_class;
+  struct RClass *false_class;
+  struct RClass *nil_class;
+  struct RClass *symbol_class;
+
+  struct RClass *kernel_module;
+  struct heap_page *heaps;
+  struct heap_page *sweeps;
+  struct heap_page *free_heaps;
+  size_t live; /* count of live objects */
+  struct RBasic *arena[MRB_ARENA_SIZE];
+  int arena_idx;
+
+  enum gc_state gc_state; /* state of gc */
+  int current_white_part; /* make white object by white_part */
+  struct RBasic *gray_list; /* list of gray objects */
+  struct RBasic *variable_gray_list; /* list of objects to be traversed atomically */
+  size_t gc_live_after_mark;
+  size_t gc_threshold;
+  mrb_int gc_interval_ratio;
+  mrb_int gc_step_ratio;
+
+  mrb_sym symidx;
+  struct kh_n2s *name2sym;	/* symbol table */
+  struct kh_s2n *sym2name;	/* reverse symbol table */
+  struct RNode *local_svar;/* regexp */
+
+  struct RClass *eException_class;
+  struct RClass *eStandardError_class;
+  struct RClass *eRuntimeError_class;
+} mrb_state;
+
+typedef mrb_value (*mrb_func_t)(mrb_state *mrb, mrb_value);
+typedef mrb_value (*mrb_funcargv_t)(mrb_state *mrb, mrb_value, int argc, mrb_value* argv);
+struct RClass *mrb_define_class(mrb_state *, const char*, struct RClass*);
+struct RClass *mrb_define_module(mrb_state *, const char*);
+mrb_value mrb_singleton_class(mrb_state*, mrb_value);
+void mrb_include_module(mrb_state*, struct RClass*, struct RClass*);
+
+void mrb_define_method(mrb_state*, struct RClass*, const char*, mrb_func_t,int);
+void mrb_define_class_method(mrb_state *, struct RClass *, const char *, mrb_func_t, int);
+void mrb_define_singleton_method(mrb_state*, void*, const char*, mrb_func_t,int);
+void mrb_define_const(mrb_state*, struct RClass*, const char *name, mrb_value);
+mrb_value mrb_instance_new(mrb_state *mrb, mrb_value cv);
+struct RClass * mrb_class_new(mrb_state *mrb, struct RClass *super);
+struct RClass * mrb_module_new(mrb_state *mrb);
+struct RClass * mrb_class_from_sym(mrb_state *mrb, struct RClass *klass, mrb_sym name);
+struct RClass * mrb_class_get(mrb_state *mrb, char *name);
+struct RClass * mrb_class_obj_get(mrb_state *mrb, char *name);
+
+mrb_value mrb_obj_dup(mrb_state *mrb, mrb_value obj);
+mrb_value mrb_check_to_integer(mrb_state *mrb, mrb_value val, const char *method);
+int mrb_obj_respond_to(struct RClass* c, mrb_sym mid);
+struct RClass * mrb_define_class_under(mrb_state *mrb, struct RClass *outer, const char *name, struct RClass *super);
+struct RClass * mrb_define_module_under(mrb_state *mrb, struct RClass *outer, const char *name);
+
+/* required arguments */
+#define ARGS_REQ(n)	(((n)&0x1f) << 19)
+/* optional arguments */
+#define ARGS_OPT(n)	(((n)&0x1f) << 14)
+/* rest argument */
+#define ARGS_REST()	(1 << 13)
+/* required arguments after rest */
+#define ARGS_POST(n)	(((n)&0x1f) << 8)
+/* keyword arguments (n of keys, kdict) */
+#define ARGS_KEY(n1,n2)	((((n1)&0x1f) << 3) | ((n2)?(1<<2):0))
+/* block argument */
+#define ARGS_BLOCK()	(1 << 1)
+
+/* accept any number of arguments */
+#define ARGS_ANY()	ARGS_REST()
+/* accept no arguments */
+#define ARGS_NONE()	0
+
+int mrb_get_args(mrb_state *mrb, const char *format, ...);
+
+mrb_value mrb_funcall(mrb_state*, mrb_value, const char*, int,...);
+mrb_value mrb_funcall_argv(mrb_state*, mrb_value, const char*, int, mrb_value*);
+mrb_value mrb_funcall_with_block(mrb_state*, mrb_value, const char*, int, mrb_value*, struct RProc*);
+mrb_sym mrb_intern(mrb_state*,const char*);
+const char *mrb_sym2name(mrb_state*,mrb_sym);
+mrb_value mrb_str_format(mrb_state *, int, const mrb_value *, mrb_value);
+
+void *mrb_malloc(mrb_state*, size_t);
+void *mrb_calloc(mrb_state*, size_t, size_t);
+void *mrb_realloc(mrb_state*, void*, size_t);
+void *mrb_obj_alloc(mrb_state*, enum mrb_vtype, struct RClass*);
+void *mrb_free(mrb_state*, void*);
+
+mrb_value mrb_str_new_cstr(mrb_state*, const char*);
+
+mrb_state* mrb_open(void);
+mrb_state* mrb_open_allocf(mrb_allocf);
+void mrb_close(mrb_state*);
+int mrb_checkstack(mrb_state*,int);
+
+mrb_value mrb_run(mrb_state*, struct RProc*, mrb_value);
+
+mrb_value mrb_p(mrb_state*, mrb_value);
+int mrb_obj_id(mrb_value obj);
+mrb_sym mrb_to_id(mrb_state *mrb, mrb_value name);
+
+int mrb_obj_equal(mrb_state*, mrb_value, mrb_value);
+int mrb_equal(mrb_state *mrb, mrb_value obj1, mrb_value obj2);
+mrb_value mrb_Integer(mrb_state *mrb, mrb_value val);
+mrb_value mrb_Float(mrb_state *mrb, mrb_value val);
+mrb_value mrb_inspect(mrb_state *mrb, mrb_value obj);
+int mrb_eql(mrb_state *mrb, mrb_value obj1, mrb_value obj2);
+
+void mrb_garbage_collect(mrb_state*);
+void mrb_incremental_gc(mrb_state *);
+int mrb_gc_arena_save(mrb_state*);
+void mrb_gc_arena_restore(mrb_state*,int);
+void mrb_gc_mark(mrb_state*,struct RBasic*);
+#define mrb_gc_mark_value(mrb,val) do {\
+  if ((val).tt >= MRB_TT_OBJECT) mrb_gc_mark((mrb), mrb_object(val));\
+} while (0);
+void mrb_gc_mark_gv(mrb_state*);
+void mrb_gc_free_gv(mrb_state*);
+void mrb_gc_mark_iv(mrb_state*, struct RObject*);
+size_t mrb_gc_mark_iv_size(mrb_state*, struct RObject*);
+void mrb_gc_free_iv(mrb_state*, struct RObject*);
+void mrb_gc_mark_mt(mrb_state*, struct RClass*);
+size_t mrb_gc_mark_mt_size(mrb_state*, struct RClass*);
+void mrb_gc_free_mt(mrb_state*, struct RClass*);
+void mrb_gc_mark_ht(mrb_state*, struct RClass*);
+size_t mrb_gc_mark_ht_size(mrb_state*, struct RClass*);
+void mrb_gc_free_ht(mrb_state*, struct RClass*);
+void mrb_field_write_barrier(mrb_state *, struct RBasic*, struct RBasic*);
+#define mrb_field_write_barrier_value(mrb, obj, val) do{\
+  if ((val.tt >= MRB_TT_OBJECT)) mrb_field_write_barrier((mrb), (obj), mrb_object(val));\
+} while (0);
+void mrb_write_barrier(mrb_state *, struct RBasic*);
+
+#define MRUBY_VERSION "Rite"
+
+#if 0
+#define DEBUG(x) x
+#else
+#define DEBUG(x)
+#endif
+
+mrb_value mrb_check_convert_type(mrb_state *mrb, mrb_value val, mrb_int type, const char *tname, const char *method);
+mrb_value mrb_any_to_s(mrb_state *mrb, mrb_value obj);
+const char * mrb_obj_classname(mrb_state *mrb, mrb_value obj);
+struct RClass* mrb_obj_class(mrb_state *mrb, mrb_value obj);
+mrb_value mrb_class_path(mrb_state *mrb, struct RClass *c);
+mrb_value mrb_convert_type(mrb_state *mrb, mrb_value val, mrb_int type, const char *tname, const char *method);
+mrb_int mrb_obj_is_kind_of(mrb_state *mrb, mrb_value obj, struct RClass *c);
+mrb_value mrb_obj_inspect(mrb_state *mrb, mrb_value self);
+mrb_value mrb_obj_clone(mrb_state *mrb, mrb_value self);
+mrb_value mrb_check_funcall(mrb_state *mrb, mrb_value recv, mrb_sym mid, int argc, mrb_value *argv);
+
+/* need to include <ctype.h> to use these macros */
+#ifndef ISPRINT
+//#define ISASCII(c) isascii((int)(unsigned char)(c))
+#define ISASCII(c) 1
+#undef ISPRINT
+#define ISPRINT(c) (ISASCII(c) && isprint((int)(unsigned char)(c)))
+#define ISSPACE(c) (ISASCII(c) && isspace((int)(unsigned char)(c)))
+#define ISUPPER(c) (ISASCII(c) && isupper((int)(unsigned char)(c)))
+#define ISLOWER(c) (ISASCII(c) && islower((int)(unsigned char)(c)))
+#define ISALNUM(c) (ISASCII(c) && isalnum((int)(unsigned char)(c)))
+#define ISALPHA(c) (ISASCII(c) && isalpha((int)(unsigned char)(c)))
+#define ISDIGIT(c) (ISASCII(c) && isdigit((int)(unsigned char)(c)))
+#define ISXDIGIT(c) (ISASCII(c) && isxdigit((int)(unsigned char)(c)))
+#endif
+
+extern mrb_value mrb_rs;
+extern mrb_value mrb_default_rs;
+
+int mrb_block_given_p(void);
+void mrb_raise(mrb_state *mrb, struct RClass *c, const char *fmt, ...);
+void rb_raise(struct RClass *c, const char *fmt, ...);
+void mrb_warn(const char *fmt, ...);
+void mrb_warning(const char *fmt, ...);
+void mrb_bug(const char *fmt, ...);
+
+#define E_TYPE_ERROR                (mrb_class_obj_get(mrb, "TypeError"))
+#define E_ARGUMENT_ERROR            (mrb_class_obj_get(mrb, "ArgumentError"))
+#define E_INDEX_ERROR               (mrb_class_obj_get(mrb, "IndexError"))
+#define E_RANGE_ERROR               (mrb_class_obj_get(mrb, "RangeError"))
+#define E_NAME_ERROR                (mrb_class_obj_get(mrb, "NameError"))
+#define E_NOMETHOD_ERROR            (mrb_class_obj_get(mrb, "NoMethodError"))
+#define E_SCRIPT_ERROR              (mrb_class_obj_get(mrb, "ScriptError"))
+#define E_SYNTAX_ERROR              (mrb_class_obj_get(mrb, "SyntaxError"))
+#define E_LOAD_ERROR                (mrb_class_obj_get(mrb, "LoadError"))
+#define E_SYSTEMCALL_ERROR          (mrb_class_obj_get(mrb, "SystemCallError"))
+#define E_LOCALJUMP_ERROR           (mrb_class_obj_get(mrb, "LocalJumpError"))
+#define E_REGEXP_ERROR              (mrb_class_obj_get(mrb, "RegexpError"))
+#define E_ZERODIVISION_ERROR        (mrb_class_obj_get(mrb, "ZeroDivisionError"))
+
+#define E_ENCODING_ERROR            (mrb_class_obj_get(mrb, "EncodingError"))
+#define E_NOTIMP_ERROR              (mrb_class_obj_get(mrb, "NotImplementedError"))
+#define E_FLOATDOMAIN_ERROR         (mrb_class_obj_get(mrb, "FloatDomainError"))
+
+#define E_KEY_ERROR                 (mrb_class_obj_get(mrb, "KeyError"))
+
+#define SYM2ID(x) ((x).value.sym)
+
+#define CONST_ID_CACHE(mrb, result, str) \
+  {                                 \
+  static mrb_sym mrb_intern_id_cache;\
+  if (!mrb_intern_id_cache)          \
+    mrb_intern_id_cache = mrb_intern(mrb, str); \
+    result mrb_intern_id_cache;      \
+  }
+#define CONST_ID(mrb, var, str) \
+    do CONST_ID_CACHE(mrb, var =, str) while (0)
+
+#define NUM2CHR_internal(x) (((mrb_type(x) == MRB_TT_STRING)&&(RSTRING_LEN(x)>=1))?\
+                     RSTRING_PTR(x)[0]:(char)(mrb_fixnum_number(x)&0xff))
+#ifdef __GNUC__
+# define NUM2CHR(x) __extension__ ({mrb_value num2chr_x = (x); NUM2CHR_internal(num2chr_x);})
+#else
+static inline char
+NUM2CHR(mrb_value x)
+{
+    return NUM2CHR_internal(x);
+}
+#endif
+mrb_value mrb_io_gets(mrb_state *mrb, mrb_value);
+mrb_value mrb_io_getbyte(mrb_state *mrb, mrb_value);
+mrb_value mrb_io_ungetc(mrb_state *, mrb_value, mrb_value);
+mrb_value mrb_io_ungetbyte(mrb_state *mrb, mrb_value, mrb_value);
+mrb_value mrb_io_close(mrb_state *mrb, mrb_value);
+mrb_value mrb_io_flush(mrb_state *mrb, mrb_value);
+mrb_value mrb_io_eof(mrb_value);
+mrb_value mrb_io_binmode(mrb_state *mrb, mrb_value);
+mrb_value mrb_io_ascii8bit_binmode(mrb_value);
+mrb_value mrb_io_addstr(mrb_state *mrb, mrb_value, mrb_value);
+mrb_value mrb_io_printf(mrb_state *mrb, int, mrb_value*, mrb_value);
+mrb_value mrb_io_print(mrb_state *mrb, int, mrb_value*, mrb_value);
+mrb_value mrb_io_puts(mrb_state *mrb, /*int argc, mrb_value *argv,*/ mrb_value);
+mrb_value mrb_io_fdopen(int, int, const char*);
+mrb_value mrb_io_get_io(mrb_state *mrb, mrb_value);
+mrb_value mrb_file_open(mrb_state *mrb, const char*, const char*);
+mrb_value mrb_file_open_str(mrb_value, const char*);
+mrb_value mrb_gets(mrb_state *mrb);
+
+mrb_value mrb_yield(mrb_state *mrb, mrb_value v, mrb_value blk);
+mrb_value mrb_yield_argv(mrb_state *mrb, mrb_value b, int argc, mrb_value *argv);
+mrb_value mrb_yield_with_self(mrb_state *mrb, mrb_value b, int argc, mrb_value *argv, mrb_value self);
+mrb_value mrb_class_new_instance(mrb_state *mrb, int, mrb_value*, struct RClass *);
+mrb_value mrb_class_new_instance_m(mrb_state *mrb, mrb_value klass);
+
+mrb_value mrb_exec_recursive(mrb_state *mrb, mrb_value(*)(mrb_state *, mrb_value, mrb_value, int),mrb_value,void *);
+
+#ifndef xmalloc
+#define xmalloc     malloc
+#define xrealloc    realloc
+#define xcalloc     calloc
+#define xfree       free
+#endif
+
+void mrb_gc(void);
+#define thread_debug if(0)printf
+
+#define RUBY_VM 1 /* YARV */
+#define HAVE_NATIVETHREAD
+int ruby_native_thread_p(void);
+
+#define RUBY_EVENT_NONE      0x0000
+#define RUBY_EVENT_LINE      0x0001
+#define RUBY_EVENT_CLASS     0x0002
+#define RUBY_EVENT_END       0x0004
+#define RUBY_EVENT_CALL      0x0008
+#define RUBY_EVENT_RETURN    0x0010
+#define RUBY_EVENT_C_CALL    0x0020
+#define RUBY_EVENT_C_RETURN  0x0040
+#define RUBY_EVENT_RAISE     0x0080
+#define RUBY_EVENT_ALL       0xffff
+#define RUBY_EVENT_VM       0x10000
+#define RUBY_EVENT_SWITCH   0x20000
+#define RUBY_EVENT_COVERAGE 0x40000
+
+typedef unsigned int mrb_event_flag_t;
+typedef void (*mrb_event_hook_func_t)(mrb_state *mrb, mrb_event_flag_t, mrb_value data, mrb_value, mrb_sym, mrb_value klass);
+
+typedef struct mrb_event_hook_struct {
+    mrb_event_flag_t flag;
+    mrb_event_hook_func_t func;
+    mrb_value data;
+    struct mrb_event_hook_struct *next;
+} mrb_event_hook_t;
+
+#define RB_EVENT_HOOKS_HAVE_CALLBACK_DATA 1
+void mrb_add_event_hook(mrb_state *mrb, mrb_event_hook_func_t func, mrb_event_flag_t events,
+               mrb_value data);
+int mrb_remove_event_hook(mrb_event_hook_func_t func);
+mrb_value mrb_to_int(mrb_state *mrb, mrb_value val);
+void mrb_check_type(mrb_state *mrb, mrb_value x, enum mrb_vtype t);
+
+//#define RUBY_SETJMP(env) ${setjmp_prefix}setjmp(env${setjmp_sigmask+,0})
+//#define RUBY_LONGJMP(env,val) ${setjmp_prefix}longjmp(env,val)
+//#define RUBY_JMP_BUF ${setjmp_sigmask+${setjmp_prefix}}jmp_buf
+#define RUBY_SETJMP(env) __builtin_setjmp(env)
+#define RUBY_LONGJMP(env,val) __builtin_longjmp(env,1)//(env,val)
+//#define RUBY_JMP_BUF ${setjmp_sigmask+${setjmp_prefix}}jmp_buf
+#define select(n, r, w, e, t) select_large_fdset(n, r, w, e, t)
+
+//int RUBY_SETJMP(mrb_jmpbuf_t env); /* add kusuda */
+#define ruby_setjmp(env) RUBY_SETJMP(env)
+#define ruby_longjmp(env,val) RUBY_LONGJMP(env,val)
+
+#if defined PRIdPTR && !defined PRI_VALUE_PREFIX
+#define PRIdVALUE PRIdPTR
+#define PRIiVALUE PRIiPTR
+#define PRIoVALUE PRIoPTR
+#define PRIuVALUE PRIuPTR
+#define PRIxVALUE PRIxPTR
+#define PRIXVALUE PRIXPTR
+#else
+#define PRIdVALUE PRI_VALUE_PREFIX"d"
+#define PRIiVALUE PRI_VALUE_PREFIX"i"
+#define PRIoVALUE PRI_VALUE_PREFIX"o"
+#define PRIuVALUE PRI_VALUE_PREFIX"u"
+#define PRIxVALUE PRI_VALUE_PREFIX"x"
+#define PRIXVALUE PRI_VALUE_PREFIX"X"
+#endif
+#ifndef PRI_VALUE_PREFIX
+# define PRI_VALUE_PREFIX ""
+#endif
+
+#if defined PRIdPTR
+# define PRI_PTRDIFF_PREFIX "t"
+#elif SIZEOF_PTRDIFF_T == SIZEOF_INT
+# define PRI_PTRDIFF_PREFIX
+#elif SIZEOF_PTRDIFF_T == SIZEOF_LONG
+# define PRI_PTRDIFF_PREFIX "l"
+#elif SIZEOF_PTRDIFF_T == SIZEOF_LONG_LONG
+# define PRI_PTRDIFF_PREFIX "ll"
+#else
+# define PRI_PTRDIFF_PREFIX
+#endif
+#define PRIdPTRDIFF PRI_PTRDIFF_PREFIX"d"
+#define PRIiPTRDIFF PRI_PTRDIFF_PREFIX"i"
+#define PRIoPTRDIFF PRI_PTRDIFF_PREFIX"o"
+#define PRIuPTRDIFF PRI_PTRDIFF_PREFIX"u"
+#define PRIxPTRDIFF PRI_PTRDIFF_PREFIX"x"
+#define PRIXPTRDIFF PRI_PTRDIFF_PREFIX"X"
+
+#if defined PRIdPTR
+# define PRI_SIZE_PREFIX "z"
+#elif SIZEOF_SIZE_T == SIZEOF_INT
+# define PRI_SIZE_PREFIX
+#elif SIZEOF_SIZE_T == SIZEOF_LONG
+# define PRI_SIZE_PREFIX "l"
+#elif SIZEOF_SIZE_T == SIZEOF_LONG_LONG
+# define PRI_SIZE_PREFIX "ll"
+#endif
+#define PRIdSIZE PRI_SIZE_PREFIX"d"
+#define PRIiSIZE PRI_SIZE_PREFIX"i"
+#define PRIoSIZE PRI_SIZE_PREFIX"o"
+#define PRIuSIZE PRI_SIZE_PREFIX"u"
+#define PRIxSIZE PRI_SIZE_PREFIX"x"
+#define PRIXSIZE PRI_SIZE_PREFIX"X"
+#define PRIdPTRDIFF PRI_PTRDIFF_PREFIX"d"
+
+#define KHASH  0
+#define STHASH 1
+#define BASICHASH 2
+#define HASH_CLASS_METHOD BASICHASH
+
+typedef enum call_type {
+    CALL_PUBLIC,
+    CALL_FCALL,
+    CALL_VCALL,
+    CALL_TYPE_MAX
+} call_type;
+
+/* compar.c */
+void mrb_cmperr(mrb_state *mrb, mrb_value x, mrb_value y);
+int mrb_cmpint(mrb_state *mrb, mrb_value val, mrb_value a, mrb_value b);
+
+#define REALLOC_N(mrb,var,type,n) (var)=(type*)mrb_realloc(mrb, (char*)(var), sizeof(type)*(n))
+
+#ifndef ANYARGS
+# ifdef __cplusplus
+#   define ANYARGS ...
+# else
+#   define ANYARGS
+# endif
+#endif
+void st_foreach_safe(mrb_state *mrb, void *table, int (*func)(ANYARGS), void * a);
+void mrb_define_alias(mrb_state *mrb, struct RClass *klass, const char *name1, const char *name2);
+const char *mrb_class_name(mrb_state *mrb, struct RClass* klass);
+void mrb_define_global_const(mrb_state *mrb, const char *name, mrb_value val);
+
+mrb_value mrb_block_proc(void);
+int mrb_sourceline(void);
+void ruby_default_signal(int sig);
+mrb_value mrb_attr_get(mrb_state *mrb, mrb_value obj, mrb_sym id);
+
+#endif	/* MRUBY_H */
diff --git a/include/mruby/array.h b/include/mruby/array.h
new file mode 100644
index 000000000..6f382ef6a
--- /dev/null
+++ b/include/mruby/array.h
@@ -0,0 +1,42 @@
+#ifndef MRUBY_ARRAY_H
+#define MRUBY_ARRAY_H
+
+struct RArray {
+  MRUBY_OBJECT_HEADER;
+  size_t len;
+  size_t capa;
+  mrb_value *buf;
+};
+
+#define mrb_ary_ptr(v)    ((struct RArray*)((v).value.p))
+#define mrb_ary_value(p)  mrb_obj_value((void*)(p))
+#define RARRAY(v)  ((struct RArray*)((v).value.p))
+
+#define RARRAY_LEN(a) (RARRAY(a)->len)
+#define RARRAY_PTR(a) (RARRAY(a)->buf)
+
+mrb_value mrb_ary_new_capa(mrb_state*, size_t);
+mrb_value mrb_ary_new(mrb_state *mrb);
+mrb_value mrb_ary_new_elts(mrb_state *mrb, long n, const mrb_value *elts);
+void mrb_ary_concat(mrb_state*, mrb_value, mrb_value);
+mrb_value mrb_ary_splat(mrb_state*, mrb_value);
+void mrb_ary_push(mrb_state*, mrb_value, mrb_value);
+mrb_value mrb_ary_pop(mrb_state *mrb, mrb_value ary);
+mrb_value mrb_ary_new_from_values(mrb_state *mrb, mrb_value *vals, size_t size);
+mrb_value mrb_ary_aget(mrb_state *mrb, mrb_value self);
+mrb_value mrb_ary_ref(mrb_state *mrb, mrb_value ary, mrb_int n);
+void mrb_ary_set(mrb_state *mrb, mrb_value ary, mrb_int n, mrb_value val);
+int mrb_ary_len(mrb_state *mrb, mrb_value ary);
+mrb_value mrb_ary_replace_m(mrb_state *mrb, mrb_value self);
+void mrb_ary_replace(mrb_state *mrb, struct RArray *a, mrb_value *argv, size_t len);
+mrb_value mrb_check_array_type(mrb_state *mrb, mrb_value self);
+mrb_value mrb_ary_unshift(mrb_state *mrb, mrb_value self, mrb_value item);
+mrb_value mrb_ary_new4(mrb_state *mrb, long n, const mrb_value *elts);
+mrb_value mrb_assoc_new(mrb_state *mrb, mrb_value car, mrb_value cdr);
+mrb_value mrb_ary_entry(mrb_value ary, long offset);
+void mrb_mem_clear(mrb_value *mem, long size);
+mrb_value mrb_ary_tmp_new(mrb_state *mrb, long capa);
+mrb_value mrb_ary_sort(mrb_state *mrb, mrb_value ary);
+mrb_value mrb_ary_shift(mrb_state *mrb, mrb_value self);
+
+#endif	/* MRUBY_ARRAY_H */
diff --git a/include/mruby/class.h b/include/mruby/class.h
new file mode 100644
index 000000000..470f517c3
--- /dev/null
+++ b/include/mruby/class.h
@@ -0,0 +1,71 @@
+#ifndef MRUBY_CLASS_H
+#define MRUBY_CLASS_H
+
+struct RClass {
+  MRUBY_OBJECT_HEADER;
+  struct kh_iv *iv;
+  struct kh_mt *mt;
+  struct RClass *super;
+};
+
+#define mrb_class_ptr(v)    ((struct RClass*)((v).value.p))
+#define RCLASS_SUPER(v)     (((struct RClass*)((v).value.p))->super)
+#define RCLASS_IV_TBL(v)    (((struct RClass*)((v).value.p))->iv)
+#define RCLASS_M_TBL(v)     (((struct RClass*)((v).value.p))->mt)
+
+static inline struct RClass*
+mrb_class(mrb_state *mrb, mrb_value v)
+{
+  switch (mrb_type(v)) {
+  case MRB_TT_FALSE:
+    if (v.value.p)
+      return mrb->false_class;
+    return mrb->nil_class;
+  case MRB_TT_TRUE:
+    return mrb->true_class;
+  case MRB_TT_SYMBOL:
+    return mrb->symbol_class;
+  case MRB_TT_FIXNUM:
+    return mrb->fixnum_class;
+  case MRB_TT_FLOAT:
+    return mrb->float_class;
+
+#ifdef INCLUDE_REGEXP
+//  case MRB_TT_REGEX:
+//    return mrb->regex_class;
+//  case MRB_TT_MATCH:
+//    return mrb->match_class;
+//  case MRB_TT_DATA:
+//    return mrb->encode_class;
+#else
+  case MRB_TT_REGEX:
+  case MRB_TT_MATCH:
+    mrb_raise(mrb, E_TYPE_ERROR, "type mismatch: %s given",
+         mrb_obj_classname(mrb, v));
+    return mrb->nil_class; /* not reach */
+#endif
+  default:
+    return ((struct RBasic*)mrb_object(v))->c;
+  }
+}
+
+#define MRB_SET_INSTANCE_TT(c, tt) c->flags = ((c->flags & ~0xff) | (char)tt)
+#define MRB_INSTANCE_TT(c) (enum mrb_vtype)(c->flags & 0xff)
+
+struct RClass* mrb_define_class_id(mrb_state*, mrb_sym, struct RClass*);
+struct RClass* mrb_define_module_id(mrb_state*, mrb_sym);
+struct RClass *mrb_vm_define_class(mrb_state*, mrb_value, mrb_value, mrb_sym);
+struct RClass *mrb_vm_define_module(mrb_state*, mrb_value, mrb_sym);
+void mrb_define_method_vm(mrb_state*, struct RClass*, mrb_sym, mrb_value);
+void mrb_define_method_raw(mrb_state*, struct RClass*, mrb_sym, struct RProc *);
+
+struct RClass *mrb_class_outer_module(mrb_state*, struct RClass *);
+struct RProc *mrb_method_search_vm(mrb_state*, struct RClass**, mrb_sym);
+struct RProc *mrb_method_search(mrb_state*, struct RClass*, mrb_sym);
+
+int mrb_respond_to(mrb_state *mrb, mrb_value obj, mrb_sym mid);
+void mrb_define_method_id(mrb_state *mrb, struct RClass *c, mrb_sym mid, mrb_func_t func, int aspec);
+
+void mrb_obj_call_init(mrb_state *mrb, mrb_value obj, int argc, mrb_value *argv);
+
+#endif	/* MRUBY_CLASS_H */
diff --git a/include/mruby/hash.h b/include/mruby/hash.h
new file mode 100644
index 000000000..b2c3d69c8
--- /dev/null
+++ b/include/mruby/hash.h
@@ -0,0 +1,59 @@
+#ifndef MRUBY_HASH_H
+#define MRUBY_HASH_H
+
+struct RHash {
+  MRUBY_OBJECT_HEADER;
+  struct kh_ht *ht;
+  mrb_value ifnone;
+};
+
+#define N 624
+#define M 397
+#define MATRIX_A 0x9908b0dfU	/* constant vector a */
+#define UMASK 0x80000000U	/* most significant w-r bits */
+#define LMASK 0x7fffffffU	/* least significant r bits */
+#define MIXBITS(u,v) ( ((u) & UMASK) | ((v) & LMASK) )
+#define TWIST(u,v) ((MIXBITS(u,v) >> 1) ^ ((v)&1U ? MATRIX_A : 0U))
+enum {MT_MAX_STATE = N};
+
+struct MT {
+    /* assume int is enough to store 32bits */
+    unsigned int state[N]; /* the array for the state vector  */
+    unsigned int *next;
+    int left;
+};
+
+#define mrb_hash_end(h) st_hash_end(h)
+#define mrb_hash_uint(h, i) st_hash_uint(h, i)
+
+#define mrb_hash_ptr(v)    ((struct RHash*)((v).value.p))
+#define mrb_hash_value(p)  mrb_obj_value((void*)(p))
+
+mrb_value mrb_hash_new_capa(mrb_state*, size_t);
+mrb_value mrb_hash_new(mrb_state *mrb, int capa);
+
+void mrb_hash_set(mrb_state *mrb, mrb_value hash, mrb_value key, mrb_value val);
+mrb_value mrb_hash_get(mrb_state *mrb, mrb_value hash, mrb_value key);
+mrb_value mrb_hash_getWithDef(mrb_state *mrb, mrb_value hash, mrb_value vkey, mrb_value def);
+mrb_value mrb_hash_delete_key(mrb_state *mrb, mrb_value hash, mrb_value key);
+mrb_value mrb_hash(mrb_state *mrb, mrb_value obj);
+void ruby_setenv(mrb_state *mrb, const char *name, const char *value);
+
+/* RHASH_TBL allocates st_table if not available. */
+#define RHASH(obj)   ((struct RHash*)((obj).value.p))
+#define RHASH_TBL(h) mrb_hash_tbl(h)
+#define RHASH_H_TBL(h)        (RHASH(h)->ht)
+#define RHASH_SIZE(h)         (RHASH_H_TBL(h)->size)
+#define RHASH_EMPTY_P(h)      (RHASH_SIZE(h) == 0)
+#define RHASH_IFNONE(h)       (RHASH(h)->ifnone)
+#define RHASH_PROCDEFAULT(h)  (RHASH(h)->ifnone)
+struct kh_ht * mrb_hash_tbl(mrb_state *mrb, mrb_value hash);
+
+#define MRB_HASH_PROC_DEFAULT 256
+#define MRB_RHASH_PROCDEFAULT_P(h) (RHASH(h)->flags & MRB_HASH_PROC_DEFAULT)
+
+char * ruby_strdup(const char *str);
+void mrb_reset_random_seed(void);
+mrb_value mrb_obj_is_proc(mrb_value proc);
+
+#endif  /* MRUBY_HASH_H */
diff --git a/include/mruby/numeric.h b/include/mruby/numeric.h
new file mode 100644
index 000000000..ee559fa1d
--- /dev/null
+++ b/include/mruby/numeric.h
@@ -0,0 +1,17 @@
+#ifndef MRUBY_NUMERIC_H
+#define MRUBY_NUMERIC_H
+
+#include <limits.h>
+
+#define RSHIFT(x,y) ((x)>>(int)(y))
+#define FIXNUM_MAX (LONG_MAX>>1)
+#define FIXNUM_MIN RSHIFT((long)LONG_MIN,1)
+#define POSFIXABLE(f) ((f) < FIXNUM_MAX+1)
+#define NEGFIXABLE(f) ((f) >= FIXNUM_MIN)
+#define FIXABLE(f) (POSFIXABLE(f) && NEGFIXABLE(f))
+
+mrb_value mrb_dbl2big(mrb_state *mrb, float d);
+void mrb_num_zerodiv(mrb_state *mrb);
+mrb_value mrb_fix2str(mrb_state *mrb, mrb_value x, int base);
+
+#endif	/* MRUBY_NUMERIC_H */
diff --git a/include/mruby/object.h b/include/mruby/object.h
new file mode 100644
index 000000000..151e36b96
--- /dev/null
+++ b/include/mruby/object.h
@@ -0,0 +1,46 @@
+#ifndef MRUBY_OBJECT_H
+#define MRUBY_OBJECT_H
+
+#define MRUBY_OBJECT_HEADER	\
+  enum mrb_vtype tt:8;\
+  int color:3;\
+  unsigned int flags:21;\
+  struct RClass *c;\
+  struct RBasic *gcnext;
+
+
+/* white: 011, black: 100, gray: 000 */
+#define MRB_GC_GRAY 0
+#define MRB_GC_WHITE_A 1
+#define MRB_GC_WHITE_B (1 << 1)
+#define MRB_GC_BLACK (1 << 2)
+#define MRB_GC_WHITES (MRB_GC_WHITE_A | MRB_GC_WHITE_B)
+#define MRB_GC_COLOR_MASK 7
+
+#define paint_gray(o) ((o)->color = MRB_GC_GRAY)
+#define paint_black(o) ((o)->color = MRB_GC_BLACK)
+#define paint_white(o) ((o)->color = MRB_GC_WHITES)
+#define paint_partial_white(s, o) ((o)->color = (s)->current_white_part)
+#define is_gray(o) ((o)->color == MRB_GC_GRAY)
+#define is_white(o) ((o)->color & MRB_GC_WHITES)
+#define is_black(o) ((o)->color & MRB_GC_BLACK)
+#define is_dead(s, o) (((o)->color & other_white_part(s) & MRB_GC_WHITES) || (o)->tt == MRB_TT_FREE)
+#define flip_white_part(s) ((s)->current_white_part = other_white_part(s))
+#define other_white_part(s) ((s)->current_white_part ^ MRB_GC_WHITES)
+
+struct RBasic {
+  MRUBY_OBJECT_HEADER;
+};
+
+struct RObject {
+  MRUBY_OBJECT_HEADER;
+  struct kh_iv *iv;
+};
+
+#define mrb_obj_ptr(v)    ((struct RObject*)((v).value.p))
+#define RBASIC(obj)  ((struct RBasic*)((obj).value.p))
+#define RBASIC_KLASS(v) ((struct RClass *)(((struct RBasic*)((v).value.p))->c))
+#define ROBJECT(v) ((struct RObject*)((v).value.p))
+#define ROBJECT_IVPTR(v) (((struct RObject*)((v).value.p))->iv)
+#define ROBJECT_NUMIV(v) (ROBJECT_IVPTR(v) ? ROBJECT_IVPTR(v)->size : 0)
+#endif	/* MRUBY_OBJECT_H */
diff --git a/include/mruby/proc.h b/include/mruby/proc.h
new file mode 100644
index 000000000..eafe54cf9
--- /dev/null
+++ b/include/mruby/proc.h
@@ -0,0 +1,44 @@
+#ifndef MRUBY_PROC_H
+#define MRUBY_PROC_H
+
+#include "mruby.h"
+#include "irep.h"
+
+struct REnv {
+  MRUBY_OBJECT_HEADER;
+  mrb_value *stack;
+  mrb_sym mid;
+  int cioff;
+};
+
+struct RProc {
+  MRUBY_OBJECT_HEADER;
+  union {
+    mrb_irep *irep;
+    mrb_func_t func;
+  } body;
+  struct RClass *target_class;
+  struct REnv *env;
+};
+
+/* aspec access */
+#define ARGS_GETREQ(a)		(((a) >> 19) & 0x1f)
+#define ARGS_GETOPT(a)		(((a) >> 14) & 0x1f)
+#define ARGS_GETREST(a)		((a) & (1<<13))
+#define ARGS_GETPOST(a)		(((a) >> 8) & 0x1f)
+#define ARGS_GETKEY(a)		(((a) >> 3) & 0x1f))
+#define ARGS_GETKDICT(a)	((a) & (1<<2))
+#define ARGS_GETBLOCK(a)	((a) & (1<<1))
+
+#define MRB_PROC_CFUNC 128
+#define MRB_PROC_CFUNC_P(p) ((p)->flags & MRB_PROC_CFUNC)
+#define MRB_PROC_STRICT 256
+#define MRB_PROC_STRICT_P(p) ((p)->flags & MRB_PROC_STRICT)
+
+#define mrb_proc_ptr(v)    ((struct RProc*)((v).value.p))
+
+struct RProc *mrb_proc_new(mrb_state*, mrb_irep*);
+struct RProc *mrb_proc_new_cfunc(mrb_state*, mrb_func_t);
+struct RProc *mrb_closure_new(mrb_state*, mrb_irep*);
+
+#endif	/* MRUBY_STRING_H */
diff --git a/include/mruby/range.h b/include/mruby/range.h
new file mode 100644
index 000000000..d25690ab3
--- /dev/null
+++ b/include/mruby/range.h
@@ -0,0 +1,21 @@
+#ifndef MRUBY_RANGE_H
+#define MRUBY_RANGE_H
+
+struct RRange {
+  MRUBY_OBJECT_HEADER;
+  struct mrb_range_edges {
+    mrb_value beg;
+    mrb_value end;
+  } *edges;
+  int excl;
+};
+
+#define mrb_range_ptr(v)    ((struct RRange*)((v).value.p))
+#define mrb_range_value(p)  mrb_obj_value((void*)(p))
+
+mrb_value mrb_range_new(mrb_state*, mrb_value, mrb_value, int);
+mrb_int mrb_range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_int err);
+int mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RClass* c);
+struct RClass* mrb_class_real(struct RClass* cl);
+
+#endif	/* MRUBY_RANGE_H */
diff --git a/include/mruby/string.h b/include/mruby/string.h
new file mode 100644
index 000000000..e889d8447
--- /dev/null
+++ b/include/mruby/string.h
@@ -0,0 +1,133 @@
+#ifndef MRUBY_STRING_H
+#define MRUBY_STRING_H
+
+#ifdef INCLUDE_ENCODING
+#include "encoding.h"
+#endif
+
+#ifndef RB_GC_GUARD
+#define RB_GC_GUARD(v) v
+#endif
+
+#define IS_EVSTR(p,e) ((p) < (e) && (*(p) == '$' || *(p) == '@' || *(p) == '{'))
+
+#define mrb_str_new4 mrb_str_new_frozen
+
+#define STR_BUF_MIN_SIZE 128
+//#define RSTRING_EMBED_LEN_MAX STR_BUF_MIN_SIZE
+
+extern const char ruby_digitmap[];
+
+struct RString {
+  MRUBY_OBJECT_HEADER;
+  size_t len;
+  union {
+    size_t capa;
+    mrb_value shared;
+  } aux;
+  char *buf;
+};
+
+extern struct SCOPE {
+    struct RBasic super;
+    mrb_sym *local_tbl;
+    mrb_value *local_vars;
+    int flags;
+} *ruby_scope;
+
+struct RVarmap {
+    struct RBasic super;
+    mrb_sym id;
+    mrb_value val;
+    struct RVarmap *next;
+};
+extern struct RVarmap *ruby_dyna_vars;
+
+//struct st_hash_type {
+//    int (*compare)();
+//    int (*hash)();
+//};
+
+#define mrb_str_ptr(s)    ((struct RString*)((s).value.p))
+#define RSTRING(s)        ((struct RString*)((s).value.p))
+#define RSTRING_PTR(s)    (RSTRING(s)->buf)
+#define RSTRING_LEN(s)    (RSTRING(s)->len)
+#define RSTRING_CAPA(s)   (RSTRING(s)->aux.capa)
+#define RSTRING_SHARED(s) (RSTRING(s)->aux.shared)
+#define RSTRING_END(s)    (RSTRING(s)->buf + RSTRING(s)->len)
+
+#define MRB_STR_SHARED      256
+#define MRB_STR_SHARED_P(s) (FL_ALL(s, MRB_STR_SHARED))
+#define MRB_STR_NOCAPA      (MRB_STR_SHARED)
+#define MRB_STR_NOCAPA_P(s) (FL_ANY(s, MRB_STR_NOCAPA))
+#define MRB_STR_UNSET_NOCAPA(s) do {\
+  FL_UNSET(s, MRB_STR_NOCAPA);\
+} while (0)
+
+mrb_value mrb_str_literal(mrb_state*, mrb_value);
+void mrb_str_concat(mrb_state*, mrb_value, mrb_value);
+mrb_value mrb_obj_to_str(mrb_state*, mrb_value);
+mrb_value mrb_str_plus(mrb_state*, mrb_value, mrb_value);
+mrb_value mrb_obj_as_string(mrb_state *mrb, mrb_value obj);
+mrb_value mrb_str_new(mrb_state *mrb, const char *p, size_t len); /* mrb_str_new */
+mrb_value mrb_str_resize(mrb_state *mrb, mrb_value str, size_t len); /* mrb_str_resize */
+mrb_value mrb_string_value(mrb_state *mrb, mrb_value *ptr); /* StringValue */
+mrb_value mrb_str_substr(mrb_state *mrb, mrb_value str, mrb_int beg, int len);
+mrb_value mrb_check_string_type(mrb_state *mrb, mrb_value str);
+mrb_value mrb_str_buf_new(mrb_state *mrb, size_t capa);
+mrb_value mrb_str_buf_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len);
+mrb_value str_buf_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len);
+
+char * mrb_string_value_cstr(mrb_state *mrb, mrb_value *ptr);
+char * mrb_string_value_ptr(mrb_state *mrb, mrb_value ptr);
+mrb_value mrb_str_subseq(mrb_state *mrb, mrb_value str, long beg, long len);
+size_t mrb_str_sublen(mrb_state *mrb, mrb_value str, long pos);
+mrb_value mrb_str_size(mrb_state *mrb, mrb_value self);
+long mrb_str_offset(mrb_state *mrb, mrb_value str, long pos);
+mrb_value mrb_str_new2(mrb_state *mrb, const char *p);
+mrb_value mrb_str_dup(mrb_state *mrb, mrb_value str); /* mrb_str_dup */
+mrb_value mrb_str_new_frozen(mrb_state *mrb, mrb_value orig);
+mrb_value mrb_lastline_get(mrb_state *mrb);
+mrb_value mrb_usascii_str_new(mrb_state *mrb, const char *ptr, long len);
+void mrb_lastline_set(mrb_value val);
+mrb_value mrb_str_buf_cat_ascii(mrb_state *mrb, mrb_value str, const char *ptr);
+void mrb_str_modify(mrb_state *mrb, mrb_value str);
+void mrb_str_set_len(mrb_state *mrb, mrb_value str, long len);
+mrb_value mrb_str_intern(mrb_state *mrb, mrb_value self);
+void mrb_str_shared_replace(mrb_state *mrb, mrb_value str, mrb_value str2);
+mrb_value mrb_str_cat2(mrb_state *mrb, mrb_value str, const char *ptr);
+mrb_value mrb_str_catf(mrb_state *mrb, mrb_value str, const char *format, ...);
+mrb_value mrb_str_to_inum(mrb_state *mrb, mrb_value str, int base, int badcheck);
+double mrb_str_to_dbl(mrb_state *mrb, mrb_value str, int badcheck);
+mrb_value mrb_str_to_str(mrb_state *mrb, mrb_value str);
+mrb_value mrb_locale_str_new(mrb_state *mrb, const char *ptr, long len);
+mrb_value mrb_filesystem_str_new_cstr(mrb_state *mrb, const char *ptr);
+mrb_int mrb_str_hash(mrb_state *mrb, mrb_value str);
+int mrb_str_hash_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);
+mrb_value str_new3(mrb_state *mrb, struct RClass* klass, mrb_value str);
+mrb_value mrb_str_buf_append(mrb_state *mrb, mrb_value str, mrb_value str2);
+void mrb_str_setter(mrb_state *mrb, mrb_value val, mrb_sym id, mrb_value *var);
+int mrb_str_is_ascii_only_p(mrb_state *mrb, mrb_value str);
+mrb_value mrb_str_inspect(mrb_state *mrb, mrb_value str);
+int mrb_str_equal(mrb_state *mrb, mrb_value str1, mrb_value str2);
+mrb_value str_new4(mrb_state *mrb, enum mrb_vtype ttype, mrb_value str);
+mrb_value * mrb_svar(mrb_int cnt);
+mrb_value mrb_str_drop_bytes(mrb_state *mrb, mrb_value str, long len);
+mrb_value mrb_str_dump(mrb_state *mrb, mrb_value str);
+mrb_value mrb_str_cat(mrb_state *mrb, mrb_value str, const char *ptr, long len);
+mrb_value mrb_str_append(mrb_state *mrb, mrb_value str, mrb_value str2);
+size_t mrb_str_capacity(mrb_value str);
+
+#ifdef INCLUDE_ENCODING
+int sym_printable(mrb_state *mrb, const char *s, const char *send, mrb_encoding *enc);
+mrb_value mrb_str_conv_enc(mrb_state *mrb, mrb_value str, mrb_encoding *from, mrb_encoding *to);
+mrb_value mrb_str_conv_enc_opts(mrb_state *mrb, mrb_value str, mrb_encoding *from, mrb_encoding *to, int ecflags, mrb_value ecopts);
+mrb_value mrb_enc_str_new(mrb_state *mrb, const char *ptr, long len, mrb_encoding *enc);
+#else
+int mrb_symname_p(const char *name);
+#endif
+
+mrb_value mrb_tainted_str_new(mrb_state *mrb, const char *ptr, long len);
+int mrb_str_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);
+
+#endif  /* MRUBY_STRING_H */
diff --git a/include/mruby/struct.h b/include/mruby/struct.h
new file mode 100644
index 000000000..b8244045d
--- /dev/null
+++ b/include/mruby/struct.h
@@ -0,0 +1,16 @@
+#ifndef MSTRUCT_H
+#define MSTRUCT_H
+
+struct RStruct {
+    struct RBasic basic;
+    long len;
+    mrb_value *ptr;
+};
+#define RSTRUCT(st)     ((struct RStruct*)((st).value.p))
+#define RSTRUCT_LEN(st) ((int)(RSTRUCT(st)->len))
+#define RSTRUCT_PTR(st) (RSTRUCT(st)->ptr)
+
+mrb_value mrb_yield_values(int n, ...);
+mrb_value mrb_mod_module_eval(mrb_state *mrb, int argc, mrb_value *argv, mrb_value mod);
+
+#endif //MSTRUCT_H