From bc4f7332e35278c751c654b44b2cc34d0b0c9344 Mon Sep 17 00:00:00 2001 From: knu Date: Wed, 28 Feb 2007 18:42:47 +0000 Subject: * ext/digest/digest.c (get_digest_base_metadata): Allow inheriting Digest::Base subclasses, which was unintentionally made impossible while restructuring Digest classes. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@11950 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/digest/digest.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'ext') diff --git a/ext/digest/digest.c b/ext/digest/digest.c index 07484f897f..92a925c616 100644 --- a/ext/digest/digest.c +++ b/ext/digest/digest.c @@ -423,15 +423,19 @@ rb_digest_class_s_hexdigest(int argc, VALUE *argv, VALUE klass) static rb_digest_metadata_t * get_digest_base_metadata(VALUE klass) { + VALUE p; VALUE obj; rb_digest_metadata_t *algo; - if (rb_ivar_defined(klass, id_metadata) == Qfalse) { - /* This class should not be subclassed in Ruby */ - rb_notimplement(); + for (p = klass; p; p = RCLASS(p)->super) { + if (rb_ivar_defined(p, id_metadata)) { + obj = rb_ivar_get(p, id_metadata); + break; + } } - obj = rb_ivar_get(klass, id_metadata); + if (!p) + rb_raise(rb_eRuntimeError, "Digest::Base cannot be directly inherited in Ruby"); Data_Get_Struct(obj, rb_digest_metadata_t, algo); -- cgit v1.2.3