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* enumerator.c (ary2sv): add dup argument.

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(enumerator_next): call ary2sv with dup=0.
  (enumerator_peek): call ary2sv with dup=1 to return duplicated array.
  (enumerator_peek_values_m): new function to return duplicated array.
  (Init_Enumerator): use enumerator_peek_values_m as
  Enumerator#peek_value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24619 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2009-08-21 15:51:35 +00:00
parent 7609494ffd
commit 461bd62fec
3 changed files with 50 additions and 11 deletions
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22
test/ruby/test_enumerator.rb
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@ -141,6 +141,28 @@ class TestEnumerator < Test::Unit::TestCase
assert_raise(StopIteration) { e.peek }
end
def test_peek_modify
o = Object.new
def o.each
yield 1,2
end
e = o.to_enum
a = e.peek
a << 3
assert_equal([1,2], e.peek)
end
def test_peek_values_modify
o = Object.new
def o.each
yield 1,2
end
e = o.to_enum
a = e.peek_values
a << 3
assert_equal([1,2], e.peek)
end
def test_next_after_stopiteration
a = [1]
e = a.each