diff options
Diffstat (limited to 'src/class.c')
| -rw-r--r-- | src/class.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/class.c b/src/class.c index 0b7521e61..21a4d3f20 100644 --- a/src/class.c +++ b/src/class.c @@ -1486,6 +1486,55 @@ mrb_bob_not(mrb_state *mrb, mrb_value cv) return mrb_bool_value(!mrb_test(cv)); } +/* 15.3.1.3.1 */ +/* 15.3.1.3.10 */ +/* 15.3.1.3.11 */ +/* + * call-seq: + * obj == other -> true or false + * obj.equal?(other) -> true or false + * obj.eql?(other) -> true or false + * + * Equality---At the <code>Object</code> level, <code>==</code> returns + * <code>true</code> only if <i>obj</i> and <i>other</i> are the + * same object. Typically, this method is overridden in descendant + * classes to provide class-specific meaning. + * + * Unlike <code>==</code>, the <code>equal?</code> method should never be + * overridden by subclasses: it is used to determine object identity + * (that is, <code>a.equal?(b)</code> iff <code>a</code> is the same + * object as <code>b</code>). + * + * The <code>eql?</code> method returns <code>true</code> if + * <i>obj</i> and <i>anObject</i> have the same value. Used by + * <code>Hash</code> to test members for equality. For objects of + * class <code>Object</code>, <code>eql?</code> is synonymous with + * <code>==</code>. Subclasses normally continue this tradition, but + * there are exceptions. <code>Numeric</code> types, for example, + * perform type conversion across <code>==</code>, but not across + * <code>eql?</code>, so: + * + * 1 == 1.0 #=> true + * 1.eql? 1.0 #=> false + */ +mrb_value +mrb_obj_equal_m(mrb_state *mrb, mrb_value self) +{ + mrb_value arg; + + mrb_get_args(mrb, "o", &arg); + return mrb_bool_value(mrb_obj_equal(mrb, self, arg)); +} + +static mrb_value +mrb_obj_not_equal_m(mrb_state *mrb, mrb_value self) +{ + mrb_value arg; + + mrb_get_args(mrb, "o", &arg); + return mrb_bool_value(!mrb_equal(mrb, self, arg)); +} + MRB_API mrb_bool mrb_obj_respond_to(mrb_state *mrb, struct RClass* c, mrb_sym mid) { @@ -2235,6 +2284,8 @@ mrb_init_class(mrb_state *mrb) MRB_SET_INSTANCE_TT(cls, MRB_TT_CLASS); mrb_define_method(mrb, bob, "initialize", mrb_bob_init, MRB_ARGS_NONE()); mrb_define_method(mrb, bob, "!", mrb_bob_not, MRB_ARGS_NONE()); + mrb_define_method(mrb, bob, "==", mrb_obj_equal_m, MRB_ARGS_REQ(1)); /* 15.3.1.3.1 */ + mrb_define_method(mrb, bob, "!=", mrb_obj_not_equal_m, MRB_ARGS_REQ(1)); mrb_define_class_method(mrb, cls, "new", mrb_class_new_class, MRB_ARGS_OPT(1)); mrb_define_method(mrb, cls, "superclass", mrb_class_superclass, MRB_ARGS_NONE()); /* 15.2.3.3.4 */ |