From 2bb47addadb3eda796520837c21d694c8d6e3320 Mon Sep 17 00:00:00 2001 From: "Yukihiro \"Matz\" Matsumoto" Date: Wed, 30 Nov 2016 10:36:17 +0900 Subject: Prohibit instantiation of immediate objects --- src/object.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/object.c') diff --git a/src/object.c b/src/object.c index c61feb342..f76ee68a2 100644 --- a/src/object.c +++ b/src/object.c @@ -8,6 +8,7 @@ #include #include #include +#include MRB_API mrb_bool mrb_obj_eq(mrb_state *mrb, mrb_value v1, mrb_value v2) @@ -265,6 +266,7 @@ mrb_init_object(mrb_state *mrb) struct RClass *f; mrb->nil_class = n = mrb_define_class(mrb, "NilClass", mrb->object_class); + MRB_SET_INSTANCE_TT(n, MRB_TT_TRUE); mrb_undef_class_method(mrb, n, "new"); mrb_define_method(mrb, n, "&", false_and, MRB_ARGS_REQ(1)); /* 15.2.4.3.1 */ mrb_define_method(mrb, n, "^", false_xor, MRB_ARGS_REQ(1)); /* 15.2.4.3.2 */ @@ -274,6 +276,7 @@ mrb_init_object(mrb_state *mrb) mrb_define_method(mrb, n, "inspect", nil_inspect, MRB_ARGS_NONE()); mrb->true_class = t = mrb_define_class(mrb, "TrueClass", mrb->object_class); + MRB_SET_INSTANCE_TT(t, MRB_TT_TRUE); mrb_undef_class_method(mrb, t, "new"); mrb_define_method(mrb, t, "&", true_and, MRB_ARGS_REQ(1)); /* 15.2.5.3.1 */ mrb_define_method(mrb, t, "^", true_xor, MRB_ARGS_REQ(1)); /* 15.2.5.3.2 */ @@ -282,6 +285,7 @@ mrb_init_object(mrb_state *mrb) mrb_define_method(mrb, t, "inspect", true_to_s, MRB_ARGS_NONE()); mrb->false_class = f = mrb_define_class(mrb, "FalseClass", mrb->object_class); + MRB_SET_INSTANCE_TT(f, MRB_TT_TRUE); mrb_undef_class_method(mrb, f, "new"); mrb_define_method(mrb, f, "&", false_and, MRB_ARGS_REQ(1)); /* 15.2.6.3.1 */ mrb_define_method(mrb, f, "^", false_xor, MRB_ARGS_REQ(1)); /* 15.2.6.3.2 */ -- cgit v1.2.3