Revert r31873 Module#mix

* class.c (rb_mix_module): revert Module#mix.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36216 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 6 insertions, 253 deletions

diff --git a/ChangeLog b/ChangeLog
index da7170902c..fff196ae73 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jun 25 17:49:28 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* class.c (rb_mix_module): revert Module#mix.
+
 Mon Jun 25 16:57:38 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* proc.c (rb_mod_define_method): allow method transplanting from a
diff --git a/class.c b/class.c
index 8e637c07d0..06b72d9b7c 100644
--- a/class.c
+++ b/class.c
@@ -120,7 +120,7 @@ rb_class_new(VALUE super)
 }
 
 static void
-rb_mod_clone_method(VALUE klass, ID mid, const rb_method_entry_t *me)
+clone_method(VALUE klass, ID mid, const rb_method_entry_t *me)
 {
     VALUE newiseqval;
     if (me->def && me->def->type == VM_METHOD_TYPE_ISEQ) {
@@ -138,7 +138,7 @@ rb_mod_clone_method(VALUE klass, ID mid, const rb_method_entry_t *me)
 static int
 clone_method_i(st_data_t key, st_data_t value, st_data_t data)
 {
-    rb_mod_clone_method((VALUE)data, (ID)key, (const rb_method_entry_t *)value);
+    clone_method((VALUE)data, (ID)key, (const rb_method_entry_t *)value);
     return ST_CONTINUE;
 }
 
@@ -696,136 +696,6 @@ rb_include_module(VALUE klass, VALUE module)
     if (changed) rb_clear_cache();
 }
 
-struct mixing_arg {
-    st_table *mtbl;
-    ID id;
-    st_table *aliasing;
-    VALUE klass;
-};
-
-static int
-check_mix_const_i(st_data_t key, st_data_t value, st_data_t arg)
-{
-    struct mixing_arg *argp = (struct mixing_arg *)arg;
-    ID id = (ID)key;
-    st_table *aliasing = argp->aliasing;
-    st_data_t alias;
-
-    if (!rb_is_const_id(id)) return ST_CONTINUE;
-    if (aliasing && st_lookup(aliasing, ID2SYM(id), &alias)) {
-	id = rb_to_id(alias);
-    }
-    if (st_lookup(argp->mtbl, id, NULL)) {
-	argp->id = id;
-	return ST_STOP;
-    }
-    return ST_CONTINUE;
-}
-
-static int
-do_mix_const_i(st_data_t key, st_data_t value, st_data_t arg)
-{
-    struct mixing_arg *argp = (struct mixing_arg *)arg;
-    ID id = (ID)key;
-    st_table *aliasing = argp->aliasing;
-    st_data_t old, alias;
-
-    if (!rb_is_const_id(id)) return ST_CONTINUE;
-    if (aliasing && st_lookup(aliasing, ID2SYM(id), &alias)) {
-	id = rb_to_id(alias);
-    }
-    if (st_lookup(argp->mtbl, id, &old)) {
-	argp->id = id;
-	return ST_STOP;
-    }
-    st_insert(argp->mtbl, id, value);
-    return ST_CONTINUE;
-}
-
-static int
-check_mix_method_i(st_data_t key, st_data_t value, st_data_t arg)
-{
-    struct mixing_arg *argp = (struct mixing_arg *)arg;
-    ID id = (ID)key;
-    st_table *aliasing = argp->aliasing;
-    st_data_t alias;
-
-    if (aliasing && st_lookup(aliasing, ID2SYM(id), &alias)) {
-	if (NIL_P(alias)) return ST_CONTINUE;
-	id = rb_to_id(alias);
-    }
-    if (st_lookup(argp->mtbl, id, NULL)) {
-	argp->id = id;
-	return ST_STOP;
-    }
-    return ST_CONTINUE;
-}
-
-static int
-do_mix_method_i(st_data_t key, st_data_t value, st_data_t arg)
-{
-    struct mixing_arg *argp = (struct mixing_arg *)arg;
-    ID id = (ID)key;
-    st_table *aliasing = argp->aliasing;
-    st_data_t old, alias;
-
-    if (aliasing && st_lookup(aliasing, ID2SYM(id), &alias)) {
-	if (NIL_P(alias)) return ST_CONTINUE;
-	id = rb_to_id(alias);
-    }
-    if (st_lookup(argp->mtbl, id, &old)) {
-	argp->id = id;
-	return ST_STOP;
-    }
-    rb_mod_clone_method(argp->klass, id, (rb_method_entry_t *)value);
-    return ST_CONTINUE;
-}
-
-void
-rb_mix_module(VALUE klass, VALUE module, st_table *constants, st_table *methods)
-{
-    st_table *mtbl_from;
-    struct mixing_arg methodarg, constarg;
-
-    rb_frozen_class_p(klass);
-    if (!OBJ_UNTRUSTED(klass)) {
-	rb_secure(4);
-    }
-
-    if (!RB_TYPE_P(module, T_MODULE)) {
-	Check_Type(module, T_MODULE);
-    }
-
-    OBJ_INFECT(klass, module);
-
-    mtbl_from = RMODULE_M_TBL(module);
-    methodarg.mtbl = RMODULE_M_TBL(klass);
-    methodarg.id = 0;
-    methodarg.aliasing = methods;
-    methodarg.klass = klass;
-    constarg.mtbl = RMODULE_IV_TBL(klass);
-    constarg.id = 0;
-    constarg.aliasing = constants;
-
-    st_foreach(mtbl_from, check_mix_method_i, (st_data_t)&methodarg);
-    if (methodarg.id) {
-	rb_raise(rb_eArgError, "method would conflict - %s", rb_id2name(methodarg.id));
-    }
-    st_foreach(mtbl_from, check_mix_const_i, (st_data_t)&constarg);
-    if (constarg.id) {
-	rb_raise(rb_eArgError, "constant would conflict - %s", rb_id2name(constarg.id));
-    }
-    st_foreach(mtbl_from, do_mix_method_i, (st_data_t)&methodarg);
-    if (methodarg.id) {
-	rb_raise(rb_eArgError, "method would conflict - %s", rb_id2name(methodarg.id));
-    }
-    st_foreach(mtbl_from, do_mix_const_i, (st_data_t)&constarg);
-    if (constarg.id) {
-	rb_raise(rb_eArgError, "constant would conflict - %s", rb_id2name(constarg.id));
-    }
-    rb_vm_inc_const_missing_count();
-}
-
 /*
  *  call-seq:
  *     mod.included_modules -> array
diff --git a/eval.c b/eval.c
index 48276487ba..1203a20ecc 100644
--- a/eval.c
+++ b/eval.c
@@ -954,66 +954,6 @@ rb_mod_include(int argc, VALUE *argv, VALUE module)
     return module;
 }
 
-/*
- *  call-seq:
- *     mix(module, ...)    -> module
- *
- *  Mix +Module+> into self.
- */
-
-static VALUE
-rb_mod_mix_into(int argc, VALUE *argv, VALUE klass)
-{
-    VALUE module, tmp, constants = Qnil, methods = Qnil;
-    st_table *const_tbl = 0, *method_tbl = 0;
-    int i = 0;
-
-    rb_check_arity(argc, 1, 3);
-    module = argv[i++];
-
-    switch (TYPE(module)) {
-      case T_CLASS:
-      case T_MODULE:
-	break;
-      default:
-	Check_Type(module, T_CLASS);
-	break;
-    }
-    if (i < argc) {
-	constants = argv[i++];
-	if (!NIL_P(tmp = rb_check_array_type(constants))) {
-	    constants = tmp;
-	}
-	else if (!NIL_P(methods = rb_check_hash_type(constants))) {
-	    constants = Qnil;
-	}
-	else {
-	    Check_Type(constants, T_HASH);
-	}
-    }
-    if (i < argc && NIL_P(methods)) {
-	methods = argv[i++];
-	if (NIL_P(tmp = rb_check_hash_type(methods))) {
-	    Check_Type(methods, T_HASH);
-	}
-	methods = tmp;
-    }
-    if (i < argc) rb_raise(rb_eArgError, "wrong arguments");
-    if (!NIL_P(constants)) {
-	VALUE hash = rb_hash_new();
-	for (i = 0; i < RARRAY_LEN(constants); ++i) {
-	    rb_hash_update_by(hash, RARRAY_PTR(constants)[i], NULL);
-	}
-	const_tbl = RHASH_TBL(RB_GC_GUARD(constants) = hash);
-    }
-    if (!NIL_P(methods)) {
-	method_tbl = RHASH_TBL(RB_GC_GUARD(methods));
-    }
-
-    rb_mix_module(klass, module, const_tbl, method_tbl);
-    return module;
-}
-
 void
 rb_obj_call_init(VALUE obj, int argc, VALUE *argv)
 {
@@ -1273,7 +1213,6 @@ Init_eval(void)
     rb_define_private_method(rb_cModule, "append_features", rb_mod_append_features, 1);
     rb_define_private_method(rb_cModule, "extend_object", rb_mod_extend_object, 1);
     rb_define_private_method(rb_cModule, "include", rb_mod_include, -1);
-    rb_define_private_method(rb_cModule, "mix", rb_mod_mix_into, -1);
 
     rb_undef_method(rb_cClass, "module_function");
 
diff --git a/method.h b/method.h
index 84b2dca3fb..816e10f5b1 100644
--- a/method.h
+++ b/method.h
@@ -102,6 +102,5 @@ void rb_mark_method_entry(const rb_method_entry_t *me);
 void rb_free_method_entry(rb_method_entry_t *me);
 void rb_sweep_method_entry(void *vm);
 void rb_free_m_table(st_table *tbl);
-void rb_mix_module(VALUE klass, VALUE module, struct st_table *constants, struct st_table *methods);
 
 #endif /* METHOD_H */
diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index 66cc0073f7..b24fa3222d 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -1238,63 +1238,4 @@ class TestModule < Test::Unit::TestCase
     INPUT
     assert_in_out_err([], src, ["NameError"], [])
   end
-
-  def test_mix_method
-    american = Module.new do
-      attr_accessor :address
-    end
-    japanese = Module.new do
-      attr_accessor :address
-    end
-
-    japanese_american = Class.new
-    assert_nothing_raised(ArgumentError) {
-      japanese_american.class_eval {mix american}
-    }
-    assert_raise(ArgumentError) {
-      japanese_american.class_eval {mix japanese}
-    }
-
-    japanese_american = Class.new
-    assert_nothing_raised(ArgumentError) {
-      japanese_american.class_eval {
-        mix american, :address => :us_address, :address= => :us_address=
-      }
-    }
-    assert_nothing_raised(ArgumentError) {
-      japanese_american.class_eval {
-        mix japanese, :address => :jp_address, :address= => :jp_address=
-      }
-    }
-
-    japanese_american = Class.new
-    assert_nothing_raised(ArgumentError) {
-      japanese_american.class_eval {
-        mix japanese, :address => nil, :address= => nil
-      }
-    }
-    assert_raise(NoMethodError) {
-      japanese_american.new.address
-    }
-    assert_nothing_raised(ArgumentError) {
-      japanese_american.class_eval {
-        mix american
-      }
-    }
-  end
-
-  def test_mix_const
-    foo = Module.new do
-      const_set(:D, 55)
-    end
-    bar = Class.new do
-      const_set(:D, 42)
-    end
-    assert_nothing_raised(ArgumentError) {
-      bar.class_eval {
-        mix foo
-      }
-    }
-    assert_equal(42, bar::D)
-  end
 end