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* eval.c (rb_mod_s_used_refinements): new method

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Module.used_refinements.  based on the patch by Charlie
  Somerville.  [Feature #7418] [ruby-core:49805]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shugo 2016-09-07 16:15:45 +00:00
parent d6e4975eaf
commit 4a660c72a3
3 changed files with 110 additions and 0 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Thu Sep 8 01:12:47 2016 Shugo Maeda <shugo@ruby-lang.org>
* eval.c (rb_mod_s_used_refinements): new method
Module.used_refinements. based on the patch by Charlie
Somerville. [Feature #7418] [ruby-core:49805]
Wed Sep 7 17:50:38 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* include/ruby/util.h (setenv): remove POSIX-noncompliant

55
eval.c
View file

@ -1311,6 +1311,59 @@ mod_using(VALUE self, VALUE module)
return self;
}
static int
used_refinements_i(VALUE _, VALUE mod, VALUE ary)
{
ID id_defined_at;
CONST_ID(id_defined_at, "__defined_at__");
while (FL_TEST(rb_class_of(mod), RMODULE_IS_REFINEMENT)) {
rb_ary_push(ary, rb_attr_get(rb_class_of(mod), id_defined_at));
mod = RCLASS_SUPER(mod);
}
return ST_CONTINUE;
}
/*
* call-seq:
* used_refinements -> array
*
* Returns an array of all active refinements in the current scope. The
* ordering of modules in the resulting array is not defined.
*
* module A
* refine Object do
* end
* end
*
* module B
* refine Object do
* end
* end
*
* using A
* using B
* p Module.used_refinements
*
* <em>produces:</em>
*
* [B, A]
*/
static VALUE
rb_mod_s_used_refinements(void)
{
const rb_cref_t *cref = rb_vm_cref();
VALUE ary = rb_ary_new();
while(cref) {
if(!NIL_P(CREF_REFINEMENTS(cref))) {
rb_hash_foreach(CREF_REFINEMENTS(cref), used_refinements_i, ary);
}
cref = CREF_NEXT(cref);
}
return rb_funcall(ary, rb_intern("uniq"), 0);
}
void
rb_obj_call_init(VALUE obj, int argc, const VALUE *argv)
{
@ -1645,6 +1698,8 @@ Init_eval(void)
rb_define_private_method(rb_cModule, "prepend_features", rb_mod_prepend_features, 1);
rb_define_private_method(rb_cModule, "refine", rb_mod_refine, 1);
rb_define_private_method(rb_cModule, "using", mod_using, 1);
rb_define_singleton_method(rb_cModule, "used_refinements",
rb_mod_s_used_refinements, 0);
rb_undef_method(rb_cClass, "refine");
rb_undef_method(rb_cClass, "module_function");

49
test/ruby/test_refinement.rb
View file

@ -1624,6 +1624,55 @@ class TestRefinement < Test::Unit::TestCase
MethodMissing.call_undefined_method
end
end
module VisibleRefinements
module RefA
refine Object do
def in_ref_a
end
end
end
module RefB
refine Object do
def in_ref_b
end
end
end
module RefC
using RefA
refine Object do
def in_ref_c
end
end
end
module Foo
using RefB
USED_REFS = Module.used_refinements
end
module Bar
using RefC
USED_REFS = Module.used_refinements
end
module Combined
using RefA
using RefB
USED_REFS = Module.used_refinements
end
end
def test_used_refinements
ref = VisibleRefinements
assert_equal [], Module.used_refinements
assert_equal [ref::RefB], ref::Foo::USED_REFS
assert_equal [ref::RefC], ref::Bar::USED_REFS
assert_equal [ref::RefB, ref::RefA], ref::Combined::USED_REFS
end
private