Merge branch 'master' into android.rake-ndk-clang

1 files changed, 153 insertions, 70 deletions

diff --git a/src/kernel.c b/src/kernel.c
index df237cd46..6cb2e3ad5 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -6,11 +6,13 @@
 
 #include <mruby.h>
 #include <mruby/array.h>
+#include <mruby/hash.h>
 #include <mruby/class.h>
 #include <mruby/proc.h>
 #include <mruby/string.h>
 #include <mruby/variable.h>
 #include <mruby/error.h>
+#include <mruby/istruct.h>
 
 typedef enum {
   NOEX_PUBLIC    = 0x00,
@@ -26,15 +28,21 @@ typedef enum {
   NOEX_RESPONDS  = 0x80
 } mrb_method_flag_t;
 
-static mrb_bool
-mrb_obj_basic_to_s_p(mrb_state *mrb, mrb_value obj)
+MRB_API mrb_bool
+mrb_func_basic_p(mrb_state *mrb, mrb_value obj, mrb_sym mid, mrb_func_t func)
 {
-  struct RProc *me = mrb_method_search(mrb, mrb_class(mrb, obj), mrb_intern_lit(mrb, "to_s"));
-  if (MRB_PROC_CFUNC_P(me) && (me->body.func == mrb_any_to_s))
+  struct RProc *me = mrb_method_search(mrb, mrb_class(mrb, obj), mid);
+  if (MRB_PROC_CFUNC_P(me) && (me->body.func == func))
     return TRUE;
   return FALSE;
 }
 
+static mrb_bool
+mrb_obj_basic_to_s_p(mrb_state *mrb, mrb_value obj)
+{
+  return mrb_func_basic_p(mrb, obj, mrb_intern_lit(mrb, "to_s"), mrb_any_to_s);
+}
+
 /* 15.3.1.3.17 */
 /*
  *  call-seq:
@@ -58,55 +66,6 @@ mrb_obj_inspect(mrb_state *mrb, mrb_value obj)
   return mrb_any_to_s(mrb, obj);
 }
 
-/* 15.3.1.3.1  */
-/* 15.3.1.3.10 */
-/* 15.3.1.3.11 */
-/*
- *  call-seq:
- *     obj == other        -> true or false
- *     obj.equal?(other)   -> true or false
- *     obj.eql?(other)     -> true or false
- *
- *  Equality---At the <code>Object</code> level, <code>==</code> returns
- *  <code>true</code> only if <i>obj</i> and <i>other</i> are the
- *  same object. Typically, this method is overridden in descendant
- *  classes to provide class-specific meaning.
- *
- *  Unlike <code>==</code>, the <code>equal?</code> method should never be
- *  overridden by subclasses: it is used to determine object identity
- *  (that is, <code>a.equal?(b)</code> iff <code>a</code> is the same
- *  object as <code>b</code>).
- *
- *  The <code>eql?</code> method returns <code>true</code> if
- *  <i>obj</i> and <i>anObject</i> have the same value. Used by
- *  <code>Hash</code> to test members for equality.  For objects of
- *  class <code>Object</code>, <code>eql?</code> is synonymous with
- *  <code>==</code>. Subclasses normally continue this tradition, but
- *  there are exceptions. <code>Numeric</code> types, for example,
- *  perform type conversion across <code>==</code>, but not across
- *  <code>eql?</code>, so:
- *
- *     1 == 1.0     #=> true
- *     1.eql? 1.0   #=> false
- */
-static mrb_value
-mrb_obj_equal_m(mrb_state *mrb, mrb_value self)
-{
-  mrb_value arg;
-
-  mrb_get_args(mrb, "o", &arg);
-  return mrb_bool_value(mrb_obj_equal(mrb, self, arg));
-}
-
-static mrb_value
-mrb_obj_not_equal_m(mrb_state *mrb, mrb_value self)
-{
-  mrb_value arg;
-
-  mrb_get_args(mrb, "o", &arg);
-  return mrb_bool_value(!mrb_equal(mrb, self, arg));
-}
-
 /* 15.3.1.3.2  */
 /*
  *  call-seq:
@@ -142,7 +101,7 @@ mrb_equal_m(mrb_state *mrb, mrb_value self)
  *  <code>:name</code> notation, which returns the symbol id of
  *  <code>name</code>. Replaces the deprecated <code>Object#id</code>.
  */
-static mrb_value
+mrb_value
 mrb_obj_id_m(mrb_state *mrb, mrb_value self)
 {
   return mrb_fixnum_value(mrb_obj_id(self));
@@ -284,6 +243,7 @@ copy_class(mrb_state *mrb, mrb_value dst, mrb_value src)
   }
   dc->mt = kh_copy(mt, mrb, sc->mt);
   dc->super = sc->super;
+  MRB_SET_INSTANCE_TT(dc, MRB_INSTANCE_TT(sc));
 }
 
 static void
@@ -301,6 +261,9 @@ init_copy(mrb_state *mrb, mrb_value dest, mrb_value obj)
     case MRB_TT_EXCEPTION:
       mrb_iv_copy(mrb, dest, obj);
       break;
+    case MRB_TT_ISTRUCT:
+      mrb_istruct_copy(dest, obj);
+      break;
 
     default:
       break;
@@ -440,11 +403,60 @@ mrb_obj_extend_m(mrb_state *mrb, mrb_value self)
 {
   mrb_value *argv;
   mrb_int argc;
+  mrb_value args;
 
   mrb_get_args(mrb, "*", &argv, &argc);
+  args = mrb_ary_new_from_values(mrb, argc, argv);
+  argv = (mrb_value*)RARRAY_PTR(args);
   return mrb_obj_extend(mrb, argc, argv, self);
 }
 
+static mrb_value
+mrb_obj_freeze(mrb_state *mrb, mrb_value self)
+{
+  struct RBasic *b;
+
+  switch (mrb_type(self)) {
+    case MRB_TT_FALSE:
+    case MRB_TT_TRUE:
+    case MRB_TT_FIXNUM:
+    case MRB_TT_SYMBOL:
+    case MRB_TT_FLOAT:
+      return self;
+    default:
+      break;
+  }
+
+  b = mrb_basic_ptr(self);
+  if (!MRB_FROZEN_P(b)) {
+    MRB_SET_FROZEN_FLAG(b);
+  }
+  return self;
+}
+
+static mrb_value
+mrb_obj_frozen(mrb_state *mrb, mrb_value self)
+{
+  struct RBasic *b;
+
+  switch (mrb_type(self)) {
+    case MRB_TT_FALSE:
+    case MRB_TT_TRUE:
+    case MRB_TT_FIXNUM:
+    case MRB_TT_SYMBOL:
+    case MRB_TT_FLOAT:
+      return mrb_true_value();
+    default:
+      break;
+  }
+
+  b = mrb_basic_ptr(self);
+  if (!MRB_FROZEN_P(b)) {
+    return mrb_false_value();
+  }
+  return mrb_true_value();
+}
+
 /* 15.3.1.3.15 */
 /*
  *  call-seq:
@@ -477,9 +489,6 @@ mrb_obj_init_copy(mrb_state *mrb, mrb_value self)
 }
 
 
-/* implementation of instance_eval */
-mrb_value mrb_obj_instance_eval(mrb_state*, mrb_value);
-
 MRB_API mrb_bool
 mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RClass* c)
 {
@@ -902,6 +911,77 @@ mrb_obj_remove_instance_variable(mrb_state *mrb, mrb_value self)
   return val;
 }
 
+void
+mrb_method_missing(mrb_state *mrb, mrb_sym name, mrb_value self, mrb_value args)
+{
+  mrb_sym inspect;
+  mrb_value repr;
+
+  inspect = mrb_intern_lit(mrb, "inspect");
+  if (mrb->c->ci > mrb->c->cibase && mrb->c->ci[-1].mid == inspect) {
+    /* method missing in inspect; avoid recursion */
+    repr = mrb_any_to_s(mrb, self);
+  }
+  else if (mrb_respond_to(mrb, self, inspect) && mrb->c->ci - mrb->c->cibase < 64) {
+    repr = mrb_funcall_argv(mrb, self, inspect, 0, 0);
+    if (mrb_string_p(repr) && RSTRING_LEN(repr) > 64) {
+      repr = mrb_any_to_s(mrb, self);
+    }
+  }
+  else {
+    repr = mrb_any_to_s(mrb, self);
+  }
+
+  mrb_no_method_error(mrb, name, args, "undefined method '%S' for %S",
+                      mrb_sym2str(mrb, name), repr);
+}
+
+/* 15.3.1.3.30 */
+/*
+ *  call-seq:
+ *     obj.method_missing(symbol [, *args] )   -> result
+ *
+ *  Invoked by Ruby when <i>obj</i> is sent a message it cannot handle.
+ *  <i>symbol</i> is the symbol for the method called, and <i>args</i>
+ *  are any arguments that were passed to it. By default, the interpreter
+ *  raises an error when this method is called. However, it is possible
+ *  to override the method to provide more dynamic behavior.
+ *  If it is decided that a particular method should not be handled, then
+ *  <i>super</i> should be called, so that ancestors can pick up the
+ *  missing method.
+ *  The example below creates
+ *  a class <code>Roman</code>, which responds to methods with names
+ *  consisting of roman numerals, returning the corresponding integer
+ *  values.
+ *
+ *     class Roman
+ *       def romanToInt(str)
+ *         # ...
+ *       end
+ *       def method_missing(methId)
+ *         str = methId.id2name
+ *         romanToInt(str)
+ *       end
+ *     end
+ *
+ *     r = Roman.new
+ *     r.iv      #=> 4
+ *     r.xxiii   #=> 23
+ *     r.mm      #=> 2000
+ */
+static mrb_value
+mrb_obj_missing(mrb_state *mrb, mrb_value mod)
+{
+  mrb_sym name;
+  mrb_value *a;
+  mrb_int alen;
+
+  mrb_get_args(mrb, "n*", &name, &a, &alen);
+  mrb_method_missing(mrb, name, mod, mrb_ary_new_from_values(mrb, alen, a));
+  /* not reached */
+  return mrb_nil_value();
+}
+
 static inline mrb_bool
 basic_obj_respond_to(mrb_state *mrb, mrb_value obj, mrb_sym id, int pub)
 {
@@ -937,14 +1017,17 @@ obj_respond_to(mrb_state *mrb, mrb_value self)
   }
   else {
     mrb_value tmp;
-    if (!mrb_string_p(mid)) {
+    if (mrb_string_p(mid)) {
+      tmp = mrb_check_intern_str(mrb, mid);
+    }
+    else {
       tmp = mrb_check_string_type(mrb, mid);
       if (mrb_nil_p(tmp)) {
         tmp = mrb_inspect(mrb, mid);
         mrb_raisef(mrb, E_TYPE_ERROR, "%S is not a symbol", tmp);
       }
+      tmp = mrb_check_intern_str(mrb, tmp);
     }
-    tmp = mrb_check_intern_str(mrb, mid);
     if (mrb_nil_p(tmp)) {
       respond_to_p = FALSE;
     }
@@ -1049,8 +1132,8 @@ mrb_obj_ceqq(mrb_state *mrb, mrb_value self)
 static mrb_value
 mrb_local_variables(mrb_state *mrb, mrb_value self)
 {
-  mrb_value ret;
   struct RProc *proc;
+  mrb_value vars;
   struct mrb_irep *irep;
   size_t i;
 
@@ -1064,22 +1147,23 @@ mrb_local_variables(mrb_state *mrb, mrb_value self)
   if (!irep->lv) {
     return mrb_ary_new(mrb);
   }
-  ret = mrb_ary_new_capa(mrb, irep->nlocals - 1);
+  vars = mrb_hash_new(mrb);
   for (i = 0; i + 1 < irep->nlocals; ++i) {
     if (irep->lv[i].name) {
-      mrb_ary_push(mrb, ret, mrb_symbol_value(irep->lv[i].name));
+      mrb_hash_set(mrb, vars, mrb_symbol_value(irep->lv[i].name), mrb_true_value());
     }
   }
   if (proc->env) {
     struct REnv *e = proc->env;
 
     while (e) {
-      if (!MRB_PROC_CFUNC_P(mrb->c->cibase[e->cioff].proc)) {
+      if (MRB_ENV_STACK_SHARED_P(e) &&
+          !MRB_PROC_CFUNC_P(mrb->c->cibase[e->cioff].proc)) {
         irep = mrb->c->cibase[e->cioff].proc->body.irep;
         if (irep->lv) {
           for (i = 0; i + 1 < irep->nlocals; ++i) {
             if (irep->lv[i].name) {
-              mrb_ary_push(mrb, ret, mrb_symbol_value(irep->lv[i].name));
+              mrb_hash_set(mrb, vars, mrb_symbol_value(irep->lv[i].name), mrb_true_value());
             }
           }
         }
@@ -1088,9 +1172,10 @@ mrb_local_variables(mrb_state *mrb, mrb_value self)
     }
   }
 
-  return ret;
+  return mrb_hash_keys(mrb, vars);
 }
 
+mrb_value mrb_obj_equal_m(mrb_state *mrb, mrb_value);
 void
 mrb_init_kernel(mrb_state *mrb)
 {
@@ -1106,11 +1191,7 @@ mrb_init_kernel(mrb_state *mrb)
 
   mrb_define_method(mrb, krn, "singleton_class",            mrb_singleton_class,             MRB_ARGS_NONE());
 
-  mrb_define_method(mrb, krn, "==",                         mrb_obj_equal_m,                 MRB_ARGS_REQ(1));    /* 15.3.1.3.1  */
-  mrb_define_method(mrb, krn, "!=",                         mrb_obj_not_equal_m,             MRB_ARGS_REQ(1));
   mrb_define_method(mrb, krn, "===",                        mrb_equal_m,                     MRB_ARGS_REQ(1));    /* 15.3.1.3.2  */
-  mrb_define_method(mrb, krn, "__id__",                     mrb_obj_id_m,                    MRB_ARGS_NONE());    /* 15.3.1.3.3  */
-  mrb_define_method(mrb, krn, "__send__",                   mrb_f_send,                      MRB_ARGS_ANY());     /* 15.3.1.3.4  */
   mrb_define_method(mrb, krn, "block_given?",               mrb_f_block_given_p_m,           MRB_ARGS_NONE());    /* 15.3.1.3.6  */
   mrb_define_method(mrb, krn, "class",                      mrb_obj_class_m,                 MRB_ARGS_NONE());    /* 15.3.1.3.7  */
   mrb_define_method(mrb, krn, "clone",                      mrb_obj_clone,                   MRB_ARGS_NONE());    /* 15.3.1.3.8  */
@@ -1118,11 +1199,12 @@ mrb_init_kernel(mrb_state *mrb)
   mrb_define_method(mrb, krn, "eql?",                       mrb_obj_equal_m,                 MRB_ARGS_REQ(1));    /* 15.3.1.3.10 */
   mrb_define_method(mrb, krn, "equal?",                     mrb_obj_equal_m,                 MRB_ARGS_REQ(1));    /* 15.3.1.3.11 */
   mrb_define_method(mrb, krn, "extend",                     mrb_obj_extend_m,                MRB_ARGS_ANY());     /* 15.3.1.3.13 */
+  mrb_define_method(mrb, krn, "freeze",                     mrb_obj_freeze,                  MRB_ARGS_NONE());
+  mrb_define_method(mrb, krn, "frozen?",                    mrb_obj_frozen,                  MRB_ARGS_NONE());
   mrb_define_method(mrb, krn, "global_variables",           mrb_f_global_variables,          MRB_ARGS_NONE());    /* 15.3.1.3.14 */
   mrb_define_method(mrb, krn, "hash",                       mrb_obj_hash,                    MRB_ARGS_NONE());    /* 15.3.1.3.15 */
   mrb_define_method(mrb, krn, "initialize_copy",            mrb_obj_init_copy,               MRB_ARGS_REQ(1));    /* 15.3.1.3.16 */
   mrb_define_method(mrb, krn, "inspect",                    mrb_obj_inspect,                 MRB_ARGS_NONE());    /* 15.3.1.3.17 */
-  mrb_define_method(mrb, krn, "instance_eval",              mrb_obj_instance_eval,           MRB_ARGS_ANY());     /* 15.3.1.3.18 */
   mrb_define_method(mrb, krn, "instance_of?",               obj_is_instance_of,              MRB_ARGS_REQ(1));    /* 15.3.1.3.19 */
   mrb_define_method(mrb, krn, "instance_variable_defined?", mrb_obj_ivar_defined,            MRB_ARGS_REQ(1));    /* 15.3.1.3.20 */
   mrb_define_method(mrb, krn, "instance_variable_get",      mrb_obj_ivar_get,                MRB_ARGS_REQ(1));    /* 15.3.1.3.21 */
@@ -1132,6 +1214,7 @@ mrb_init_kernel(mrb_state *mrb)
   mrb_define_method(mrb, krn, "iterator?",                  mrb_f_block_given_p_m,           MRB_ARGS_NONE());    /* 15.3.1.3.25 */
   mrb_define_method(mrb, krn, "kind_of?",                   mrb_obj_is_kind_of_m,            MRB_ARGS_REQ(1));    /* 15.3.1.3.26 */
   mrb_define_method(mrb, krn, "local_variables",            mrb_local_variables,             MRB_ARGS_NONE());    /* 15.3.1.3.28 */
+  mrb_define_method(mrb, krn, "method_missing",             mrb_obj_missing,                 MRB_ARGS_ANY());     /* 15.3.1.3.30 */
   mrb_define_method(mrb, krn, "methods",                    mrb_obj_methods_m,               MRB_ARGS_OPT(1));    /* 15.3.1.3.31 */
   mrb_define_method(mrb, krn, "nil?",                       mrb_false,                       MRB_ARGS_NONE());    /* 15.3.1.3.32 */
   mrb_define_method(mrb, krn, "object_id",                  mrb_obj_id_m,                    MRB_ARGS_NONE());    /* 15.3.1.3.33 */