* parse.y (rb_compose_ivar2): function to create a new ivar2

  symbol from a symbol and a class.  back-ported from matzruby.

* parse.y (rb_decompose_ivar2): reverse function of
  rb_compose_ivar2(). 

* marshal.c (w_symbol): support class local instance variables.

* marshal.c (r_object0): ditto.

* compile.c (defined_expr): ditto.

* compile.c (iseq_compile_each): ditto.

* insns.def: add two new instructions: getinstancevariable2 and
  setinstancevariable2.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11630 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 38 insertions, 0 deletions

diff --git a/insns.def b/insns.def
index 99401cc395..b84d07f290 100644
--- a/insns.def
+++ b/insns.def
@@ -188,6 +188,22 @@ getinstancevariable
 
 /**
   @c variable
+  @e get class local instance variable id of obj.
+  @j obj のクラスローカルインスタンス変数 id を得る。
+ */
+DEFINE_INSN
+getinstancevariable2
+(ID id)
+()
+(VALUE val)
+{
+    /* need to cache composed id */
+    id = rb_compose_ivar2(id, eval_get_cvar_base(th, GET_ISEQ()));
+    val = rb_ivar_get(GET_SELF(), id);
+}
+
+/**
+  @c variable
   @e set instance variable id of obj as val.
   @j obj のインスタンス変数を val にする。
  */
@@ -202,6 +218,22 @@ setinstancevariable
 
 /**
   @c variable
+  @e set class local instance variable id of obj as val.
+  @j obj のクラスローカルインスタンス変数を val にする。
+ */
+DEFINE_INSN
+setinstancevariable2
+(ID id)
+(VALUE val)
+()
+{
+    /* need to cache composed id */
+    id = rb_compose_ivar2(id, eval_get_cvar_base(th, GET_ISEQ()));
+    rb_ivar_set(GET_SELF(), id, val);
+}
+
+/**
+  @c variable
   @e get class variable id of klass as val.
   @j klass のクラス変数 id を得る。
  */
@@ -901,6 +933,12 @@ defined
 	    expr_type = "instance-variable";
 	}
 	break;
+      case DEFINED_IVAR2:
+	klass = get_cref(GET_ISEQ(), GET_LFP())->nd_clss;
+	if (rb_ivar_defined(GET_SELF(), rb_compose_ivar2(SYM2ID(obj), klass))) {
+	    expr_type = "class local instance-variable";
+	}
+	break;
       case DEFINED_GVAR:
 	if (rb_gvar_defined((struct global_entry *)(obj & ~1))) {
 	    expr_type = "global-variable";