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* object.c: Add NilClass#to_h [Feature #6276]

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[ref #5008] [rubyspec:dc5ecddbd608]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35340 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2012-04-16 03:15:56 +00:00
parent f92be2c01a
commit 33399fe824
2 changed files with 22 additions and 0 deletions
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4
NEWS
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@ -43,6 +43,10 @@ with all sufficient information, see the ChangeLog file.
* added LoadError#path method to return the file name that could not be * added LoadError#path method to return the file name that could not be
loaded. loaded.
* NilClass
* added method:
* added nil.to_h which returns {}
* Signal * Signal
* incompatible changes: * incompatible changes:
* Signal.trap raises ArgumentError when :SEGV, :BUS, :ILL, :FPE, :VTALRM * Signal.trap raises ArgumentError when :SEGV, :BUS, :ILL, :FPE, :VTALRM

18
object.c
View file

@ -1057,6 +1057,23 @@ nil_to_a(VALUE obj)
return rb_ary_new2(0); return rb_ary_new2(0);
} }
/*
* Document-method: to_h
*
* call-seq:
* nil.to_h -> {}
*
* Always returns an empty hash.
*
* nil.to_h #=> {}
*/
static VALUE
nil_to_h(VALUE obj)
{
return rb_hash_new();
}
/* /*
* call-seq: * call-seq:
* nil.inspect -> "nil" * nil.inspect -> "nil"
@ -2896,6 +2913,7 @@ Init_Object(void)
rb_define_method(rb_cNilClass, "to_f", nil_to_f, 0); rb_define_method(rb_cNilClass, "to_f", nil_to_f, 0);
rb_define_method(rb_cNilClass, "to_s", nil_to_s, 0); rb_define_method(rb_cNilClass, "to_s", nil_to_s, 0);
rb_define_method(rb_cNilClass, "to_a", nil_to_a, 0); 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, "inspect", nil_inspect, 0);
rb_define_method(rb_cNilClass, "&", false_and, 1); rb_define_method(rb_cNilClass, "&", false_and, 1);
rb_define_method(rb_cNilClass, "|", false_or, 1); rb_define_method(rb_cNilClass, "|", false_or, 1);