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* enumerator.c (lazy_take_func, lazy_take): multiple calls of

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force/to_a method to Enumerator::Lazy#take should return same
  results. [ruby-dev:45634] [Bug #6428]

* test/ruby/test_lazy_enumerator.rb (test_take_recycle): add test for
  above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nagachika 2012-05-13 15:24:40 +00:00
parent 526a853d6d
commit 4007da1792
3 changed files with 19 additions and 1 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
Mon May 14 00:14:24 2012 CHIKANAGA Tomoyuki <nagachika@ruby-lang.org>
* enumerator.c (lazy_take_func, lazy_take): multiple calls of
force/to_a method to Enumerator::Lazy#take should return same
results. [ruby-dev:45634] [Bug #6428]
* test/ruby/test_lazy_enumerator.rb (test_take_recycle): add test for
above.
Sun May 13 23:38:31 2012 CHIKANAGA Tomoyuki <nagachika@ruby-lang.org>
* test/ruby/test_io.rb (test_flush_in_finalizer1): don't use IO.for_fd

3
enumerator.c
View file

@ -1533,6 +1533,7 @@ lazy_take_func(VALUE val, VALUE args, int argc, VALUE *argv)
rb_funcall2(argv[0], id_yield, argc - 1, argv + 1);
if (--memo->u3.cnt == 0) {
memo->u3.cnt = memo->u2.argc;
return Qundef;
}
else {
@ -1557,7 +1558,7 @@ lazy_take(VALUE obj, VALUE n)
argv[2] = INT2NUM(0);
argc = 3;
}
memo = NEW_MEMO(0, 0, len);
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));

8
test/ruby/test_lazy_enumerator.rb
View file

@ -229,6 +229,14 @@ class TestLazyEnumerator < Test::Unit::TestCase
assert_equal(nil, a.current)
end
def test_take_recycle
bug6428 = '[ruby-dev:45634]'
a = Step.new(1..10)
take5 = a.lazy.take(5)
assert_equal((1..5).to_a, take5.force, bug6428)
assert_equal((1..5).to_a, take5.force, bug6428)
end
def test_take_while
a = Step.new(1..10)
assert_equal(1, a.take_while {|i| i < 5}.first)