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Revision 38298

  • fix the behavior when a module is included into a refinement.
    This change is a little tricky, so it might be better to prohibit
    module inclusion to refinements.

  • include/ruby/ruby.h (RMODULE_INCLUDED_INTO_REFINEMENT): new flag
    to represent that a module (iclass) is included into a refinement.

  • class.c (include_modules_at): set RMODULE_INCLUDED_INTO_REFINEMENT
    if klass is a refinement.

  • eval.c (rb_mod_refine): set the superclass of a refinement to the
    refined class for super.

  • eval.c (rb_using_refinement): skip the above superclass (the
    refined class) when creating iclasses for refinements. Otherwise,
    `using Refinement1; using Refinement2' creates iclasses:
    -> -> -> RefinedClass,
    where is an iclass for Module, so RefinedClass is
    searched before Refinement1. The correct iclasses should be
    -> -> RefinedClass.

  • vm_insnhelper.c (vm_search_normal_superclass): if klass is an
    iclass for a refinement, use the refinement's superclass instead
    of the iclass's superclass. Otherwise, multiple refinements are
    searched by super. For example, if a refinement Refinement2
    includes a module M (i.e., Refinement2 -> -> RefinedClass,
    and if refinements iclasses are -> ' ->
    -> RefinedClass, then super in should
    use Refinement2's superclass instead of 's
    superclass '.

  • vm_insnhelper.c (vm_search_super_method): do not raise a
    NotImplementError if current_defind_class is a module included
    into a refinement. Because of the change of
    vm_search_normal_superclass(), the receiver might not be an
    instance of the module('s iclass).

  • test/ruby/test_refinement.rb: related test.