* vm_method.c (rb_method_entry_make): add a method entry with

  VM_METHOD_TYPE_REFINED to the class refined by the refinement if
  the target module is a refinement.  When a method entry with
  VM_METHOD_TYPE_UNDEF is invoked by vm_call_method(), a method with
  the same name is searched in refinements.  If such a method is
  found, the method is invoked.  Otherwise, the original method in
  the refined class (rb_method_definition_t::body.orig_def) is
  invoked.  This change is made to simplify the normal method lookup
  and to improve the performance of normal method calls.

* vm_method.c (EXPR1, search_method, rb_method_entry),
  vm_eval.c (rb_call0, rb_search_method_entry): do not use
  refinements for method lookup.

* vm_insnhelper.c (vm_call_method): search methods in refinements if
  ci->me is VM_METHOD_TYPE_REFINED.  If the method is called by
  super (i.e., ci->call == vm_call_super_method), skip the same
  method entry as the current method to avoid infinite call of the
  same method.

* class.c (include_modules_at): add a refined method entry for each
  method defined in a module included in a refinement.

* class.c (rb_prepend_module): set an empty table to
  RCLASS_M_TBL(klass) to add refined method entries, because
  refinements should have priority over prepended modules.

* proc.c (mnew): use rb_method_entry_with_refinements() to get
  a refined method.

* test/ruby/test_refinement.rb (test_inline_method_cache): do not skip
  the test because it should pass successfully.

* test/ruby/test_refinement.rb (test_redefine_refined_method): new
  test for the case a refined method is redefined.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37993 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 3 deletions

diff --git a/object.c b/object.c
index f515d48ac6..62db906b04 100644
--- a/object.c
+++ b/object.c
@@ -1337,7 +1337,7 @@ rb_obj_cmp(VALUE obj1, VALUE obj2)
 static VALUE
 rb_mod_to_s(VALUE klass)
 {
-    ID id_refined_class, id_defined_at;
+    ID id_defined_at;
     VALUE refined_class, defined_at;
 
     if (FL_TEST(klass, FL_SINGLETON)) {
@@ -1357,8 +1357,7 @@ rb_mod_to_s(VALUE klass)
 
 	return s;
     }
-    CONST_ID(id_refined_class, "__refined_class__");
-    refined_class = rb_attr_get(klass, id_refined_class);
+    refined_class = rb_refinement_module_get_refined_class(klass);
     if (!NIL_P(refined_class)) {
 	VALUE s = rb_usascii_str_new2("#<refinement:");