diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2002-12-17 10:34:30 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2002-12-17 10:34:30 +0000 |
commit | 86db656415a2e05b573d95d813d6ca5a26b55d07 (patch) | |
tree | 379c349bd378072c2907f4e6579b677573a2e087 /string.c | |
parent | 3a20ed532b57da1e58287a5c53abe14400a085f4 (diff) |
* 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
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 14 |
1 files changed, 12 insertions, 2 deletions
@@ -474,8 +474,18 @@ rb_str_substr(str, beg, len) } if (len == 0) return rb_str_new5(str,0,0); - str2 = rb_str_new5(str,RSTRING(str)->ptr+beg, len); - OBJ_INFECT(str2, str); + if (len > sizeof(struct RString)/2 && + beg + len == RSTRING(str)->len && + !FL_TEST(str, STR_ASSOC)) { + if (!FL_TEST(str, ELTS_SHARED)) str = rb_str_new4(str); + str2 = rb_str_new3(str); + RSTRING(str2)->ptr += beg; + RSTRING(str2)->len = len; + } + else { + str2 = rb_str_new5(str, RSTRING(str)->ptr+beg, len); + OBJ_INFECT(str2, str); + } return str2; } |