diff options
author | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-26 07:55:07 +0000 |
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committer | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-26 07:55:07 +0000 |
commit | ebff9dc10e6e72239c23e50acc7d3cbfdc659e7a (patch) | |
tree | 26182851eb992cc67916e9e9ace053e2aaac5cc2 /object.c | |
parent | f7e94df0d66aff47745d189ab5a7858a92233d57 (diff) |
object.c: Deprecate Object#=~ and add NilClass#=~`
Object#=~ always returns nil. This behavior is not only unuseful but
also troublesome because it may hide a type error.
This change deprecates Object#=~. For compatibility, NilClass#=~ is
newly introduced. [Feature #15231]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65989 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'object.c')
-rw-r--r-- | object.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -1479,6 +1479,19 @@ nil_inspect(VALUE obj) return rb_usascii_str_new2("nil"); } +/* + * call-seq: + * nil =~ other -> nil + * + * Dummy pattern matching -- always returns nil. + */ + +static VALUE +nil_match(VALUE obj1, VALUE obj2) +{ + return Qnil; +} + /*********************************************************************** * Document-class: TrueClass * @@ -1673,6 +1686,7 @@ rb_false(VALUE obj) static VALUE rb_obj_match(VALUE obj1, VALUE obj2) { + rb_warning("Object#=~ is deprecated; it always returns nil"); return Qnil; } @@ -4149,6 +4163,7 @@ InitVM_Object(void) rb_define_method(rb_cNilClass, "to_a", nil_to_a, 0); rb_define_method(rb_cNilClass, "to_h", nil_to_h, 0); rb_define_method(rb_cNilClass, "inspect", nil_inspect, 0); + rb_define_method(rb_cNilClass, "=~", nil_match, 1); rb_define_method(rb_cNilClass, "&", false_and, 1); rb_define_method(rb_cNilClass, "|", false_or, 1); rb_define_method(rb_cNilClass, "^", false_xor, 1); |