* node.h (NODE_ATTRASGN): new node, assignment to attribute.

  [ruby-core:00637].

* eval.c (is_defined, rb_eval): ditto.

* parse.y (attrset, node_assign): ditto.

* string.c (rb_str_substr): tail sharing.  [ruby-core:00650]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/node.h b/node.h
index 691a4cd8c1..069045d593 100644
--- a/node.h
+++ b/node.h
@@ -123,6 +123,7 @@ enum node_type {
     NODE_MEMO,
     NODE_IFUNC,
     NODE_DSYM,
+    NODE_ATTRASGN,
     NODE_LAST
 };
 
@@ -332,6 +333,7 @@ typedef struct RNode {
 #define NEW_POSTEXE() rb_node_newnode(NODE_POSTEXE,0,0,0)
 #define NEW_DMETHOD(b) rb_node_newnode(NODE_DMETHOD,0,0,b)
 #define NEW_BMETHOD(b) rb_node_newnode(NODE_BMETHOD,0,0,b)
+#define NEW_ATTRASGN(r,m,a) rb_node_newnode(NODE_ATTRASGN,r,m,a)
 
 #define NOEX_PUBLIC    0
 #define NOEX_NOSUPER   1