diff options
| author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-11-06 17:16:29 +0000 |
|---|---|---|
| committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-11-06 17:16:29 +0000 |
| commit | 9aafa954aa9ddb54f943c029100c03c4d4a1701b (patch) | |
| tree | 33ea5c8b0e25107b4bb4f80934eaa575363138c3 /enumerator.c | |
| parent | 5dbbfc3b3463d08b290e33975d815b6336069810 (diff) | |
* enumerator.c: Support for lazy.take.size
[Feature #6636]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'enumerator.c')
| -rw-r--r-- | enumerator.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/enumerator.c b/enumerator.c index 1324c9284c..e5dd80a841 100644 --- a/enumerator.c +++ b/enumerator.c @@ -1625,6 +1625,15 @@ lazy_take_func(VALUE val, VALUE args, int argc, VALUE *argv) } static VALUE +lazy_take_size(VALUE lazy) { + long len = NUM2LONG(RARRAY_PTR(rb_ivar_get(lazy, id_arguments))[0]); + VALUE receiver = lazy_receiver_size(lazy); + if (NIL_P(receiver) || (FIXNUM_P(receiver) && FIX2LONG(receiver) < len)) + return receiver; + return LONG2NUM(len); +} + +static VALUE lazy_take(VALUE obj, VALUE n) { NODE *memo; @@ -1644,7 +1653,7 @@ lazy_take(VALUE obj, VALUE n) memo = NEW_MEMO(0, len, len); return lazy_set_method(rb_block_call(rb_cLazy, id_new, argc, argv, lazy_take_func, (VALUE) memo), - rb_ary_new3(1, n), 0); + rb_ary_new3(1, n), lazy_take_size); } static VALUE |