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Merge pull request #5664 from dearblue/extend

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Reimplement `Kernel.extend` in Ruby
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-03-07 11:21:59 +09:00
committed by GitHub
parent dc98988482 ac0d27d1a9
commit 2f8eba325a
2 changed files with 35 additions and 47 deletions
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src/kernel.c
-47
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@@ -215,52 +215,6 @@ mrb_obj_class_m(mrb_state *mrb, mrb_value self)
return mrb_obj_value(mrb_obj_class(mrb, self));
}
/* 15.3.1.3.13 */
/*
* call-seq:
* obj.extend(module, ...) -> obj
*
* Adds to _obj_ the instance methods from each module given as a
* parameter.
*
* module Mod
* def hello
* "Hello from Mod.\n"
* end
* end
*
* class Klass
* def hello
* "Hello from Klass.\n"
* end
* end
*
* k = Klass.new
* k.hello #=> "Hello from Klass.\n"
* k.extend(Mod) #=> #<Klass:0x401b3bc8>
* k.hello #=> "Hello from Mod.\n"
*/
static mrb_value
mrb_obj_extend_m(mrb_state *mrb, mrb_value self)
{
const mrb_value *argv;
mrb_int argc;
mrb_get_args(mrb, "*", &argv, &argc);
if (argc == 0) {
mrb_argnum_error(mrb, argc, 1, -1);
}
for (mrb_int i = 0; i < argc; i++) {
mrb_check_type(mrb, argv[i], MRB_TT_MODULE);
}
while (argc--) {
mrb_funcall_id(mrb, argv[argc], MRB_SYM(extend_object), 1, self);
mrb_funcall_id(mrb, argv[argc], MRB_SYM(extended), 1, self);
}
return self;
}
MRB_API mrb_value
mrb_obj_freeze(mrb_state *mrb, mrb_value self)
{
@@ -633,7 +587,6 @@ mrb_init_kernel(mrb_state *mrb)
mrb_define_method(mrb, krn, "clone", mrb_obj_clone, MRB_ARGS_NONE()); /* 15.3.1.3.8 */
mrb_define_method(mrb, krn, "dup", mrb_obj_dup, MRB_ARGS_NONE()); /* 15.3.1.3.9 */
mrb_define_method(mrb, krn, "eql?", mrb_obj_equal_m, MRB_ARGS_REQ(1)); /* 15.3.1.3.10 */
mrb_define_method(mrb, krn, "extend", mrb_obj_extend_m, MRB_ARGS_ANY()); /* 15.3.1.3.13 */
mrb_define_method(mrb, krn, "freeze", mrb_obj_freeze, MRB_ARGS_NONE());
mrb_define_method(mrb, krn, "frozen?", mrb_obj_frozen, MRB_ARGS_NONE());
mrb_define_method(mrb, krn, "hash", mrb_obj_hash, MRB_ARGS_NONE()); /* 15.3.1.3.15 */