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* enumerator.c (enumerator_rewind): If the enclosed object

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responds to a "rewind" method, call it; cf. [ruby-dev:37268]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20607 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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knu 2008-12-10 03:58:56 +00:00
parent 1ed799937b
commit 820c409ce9
2 changed files with 12 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Wed Dec 10 12:56:32 2008 Akinori MUSHA <knu@iDaemons.org>
* enumerator.c (enumerator_rewind): If the enclosed object
responds to a "rewind" method, call it; cf. [ruby-dev:37268]
Wed Dec 10 12:46:52 2008 Akinori MUSHA <knu@iDaemons.org> Wed Dec 10 12:46:52 2008 Akinori MUSHA <knu@iDaemons.org>
* enumerator.c (enumerator_next): Fix a typo: s/rewinded/rewound/. * enumerator.c (enumerator_next): Fix a typo: s/rewinded/rewound/.

7
enumerator.c
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@ -22,6 +22,7 @@
*/ */
VALUE rb_cEnumerator; VALUE rb_cEnumerator;
static VALUE sym_each; static VALUE sym_each;
static ID id_rewind;
VALUE rb_eStopIteration; VALUE rb_eStopIteration;
@ -532,6 +533,8 @@ enumerator_next(VALUE obj)
* e.rewind => e * e.rewind => e
* *
* Rewinds the enumeration sequence by the next method. * Rewinds the enumeration sequence by the next method.
*
* If the enclosed object responds to a "rewind" method, it is called.
*/ */
static VALUE static VALUE
@ -539,6 +542,9 @@ enumerator_rewind(VALUE obj)
{ {
struct enumerator *e = enumerator_ptr(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->fib = 0;
e->dst = Qnil; e->dst = Qnil;
e->no_next = Qfalse; e->no_next = Qfalse;
@ -861,6 +867,7 @@ Init_Enumerator(void)
rb_define_method(rb_cYielder, "<<", yielder_yield, -2); rb_define_method(rb_cYielder, "<<", yielder_yield, -2);
sym_each = ID2SYM(rb_intern("each")); sym_each = ID2SYM(rb_intern("each"));
id_rewind = rb_intern("rewind");
rb_provide("enumerator.so"); /* for backward compatibility */ rb_provide("enumerator.so"); /* for backward compatibility */
} }