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merges r20607 from trunk into ruby_1_9_1. [ruby-dev:37407]

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* enumerator.c (enumerator_rewind): If the enclosed object
  responds to a "rewind" method, call it; cf. [ruby-dev:37268]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@20712 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
yugui 2008-12-13 01:59:42 +00:00
parent 1ddbc7e70f
commit dfe8fa1bbc
2 changed files with 12 additions and 0 deletions
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7
enumerator.c
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@ -22,6 +22,7 @@
*/
VALUE rb_cEnumerator;
static VALUE sym_each;
static ID id_rewind;
VALUE rb_eStopIteration;
@ -532,6 +533,8 @@ enumerator_next(VALUE obj)
* e.rewind => e
*
* Rewinds the enumeration sequence by the next method.
*
* If the enclosed object responds to a "rewind" method, it is called.
*/
static VALUE
@ -539,6 +542,9 @@ enumerator_rewind(VALUE obj)
{
struct enumerator *e = enumerator_ptr(obj);
if (rb_respond_to(e->obj, id_rewind))
rb_funcall(e->obj, id_rewind, 0);
e->fib = 0;
e->dst = Qnil;
e->no_next = Qfalse;
@ -798,6 +804,7 @@ Init_Enumerator(void)
rb_define_method(rb_cYielder, "<<", yielder_yield, -2);
sym_each = ID2SYM(rb_intern("each"));
id_rewind = rb_intern("rewind");
rb_provide("enumerator.so"); /* for backward compatibility */
}