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* enumerator.c: Fix state handling for Lazy#zip

Browse source 
[bug #7696] [bug #7691]

* test/ruby/test_lazy_enumerator.rb: test for above

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38923 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2013-01-24 06:24:22 +00:00
parent 9d94a1a5a1
commit 41d6ba8765
3 changed files with 28 additions and 9 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Thu Jan 24 15:21:17 2013 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
* enumerator.c: Fix state handling for Lazy#zip,{drop_take}{_while}
[bug #7696] [bug #7691]
Thu Jan 24 11:43:47 2013 Narihiro Nakamura <authornari@gmail.com>
* eval.c (f_current_dirname): Add documentation about "__dir__

24
enumerator.c
View file

@ -104,7 +104,7 @@
*/
VALUE rb_cEnumerator;
VALUE rb_cLazy;
static ID id_rewind, id_each, id_new, id_initialize, id_yield, id_call, id_size;
static ID id_rewind, id_each, id_new, id_initialize, id_yield, id_call, id_size, id_to_enum;
static ID id_eqq, id_next, id_result, id_lazy, id_receiver, id_arguments, id_memo, id_method, id_force;
static VALUE sym_each, sym_cycle;
@ -1602,12 +1602,21 @@ next_stopped(VALUE obj)
}
static VALUE
lazy_zip_func(VALUE val, VALUE arg, int argc, VALUE *argv)
lazy_zip_func(VALUE val, VALUE zip_args, int argc, VALUE *argv)
{
VALUE yielder, ary, v;
VALUE yielder, ary, arg, v;
long i;
yielder = argv[0];
arg = rb_ivar_get(yielder, id_memo);
if (NIL_P(arg)) {
arg = rb_ary_new2(RARRAY_LEN(zip_args));
for (i = 0; i < RARRAY_LEN(zip_args); i++) {
rb_ary_push(arg, rb_funcall(RARRAY_PTR(zip_args)[i], id_to_enum, 0));
}
rb_ivar_set(yielder, id_memo, arg);
}
ary = rb_ary_new2(RARRAY_LEN(arg) + 1);
rb_ary_push(ary, argv[1]);
for (i = 0; i < RARRAY_LEN(arg); i++) {
@ -1623,19 +1632,15 @@ static VALUE
lazy_zip(int argc, VALUE *argv, VALUE obj)
{
VALUE ary;
int i;
if (rb_block_given_p()) {
return rb_call_super(argc, argv);
}
ary = rb_ary_new2(argc);
for (i = 0; i < argc; i++) {
rb_ary_push(ary, rb_funcall(argv[i], id_lazy, 0));
}
ary = rb_ary_new4(argc, argv);
return lazy_set_method(rb_block_call(rb_cLazy, id_new, 1, &obj,
lazy_zip_func, ary),
rb_ary_new4(argc, argv), lazy_receiver_size);
ary, lazy_receiver_size);
}
static VALUE
@ -1957,6 +1962,7 @@ Init_Enumerator(void)
id_memo = rb_intern("memo");
id_method = rb_intern("method");
id_force = rb_intern("force");
id_to_enum = rb_intern("to_enum");
sym_each = ID2SYM(id_each);
sym_cycle = ID2SYM(rb_intern("cycle"));

8
test/ruby/test_lazy_enumerator.rb
View file

@ -264,6 +264,14 @@ class TestLazyEnumerator < Test::Unit::TestCase
assert_equal([*(6..10)]*5, drop5.flat_map{drop5}.force, bug7696)
end
def test_zip_nested
bug7696 = '[ruby-core:51470]'
enum = ('a'..'z').each
enum.next
zip = (1..3).lazy.zip(enum, enum)
assert_equal([[1, 'a', 'a'], [2, 'b', 'b'], [3, 'c', 'c']]*3, zip.flat_map{zip}.force, bug7696)
end
def test_take_rewound
bug7696 = '[ruby-core:51470]'
e=(1..42).lazy.take(2)