Object.subclasses_of includes anonymous subclasses.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7590 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 11 insertions, 7 deletions

diff --git a/activesupport/lib/active_support/core_ext/object/extending.rb b/activesupport/lib/active_support/core_ext/object/extending.rb
index 0815909410..7c79d73f21 100644
--- a/activesupport/lib/active_support/core_ext/object/extending.rb
+++ b/activesupport/lib/active_support/core_ext/object/extending.rb
@@ -5,17 +5,21 @@ class Object
 
   def subclasses_of(*superclasses) #:nodoc:
     subclasses = []
+
+    # Exclude this class unless it's a subclass of our supers and is defined.
+    # We check defined? in case we find a removed class that has yet to be
+    # garbage collected. This also fails for anonymous classes -- please
+    # submit a patch if you have a workaround.
     ObjectSpace.each_object(Class) do |k|
-      next unless # Exclude this class unless
-        superclasses.any? { |superclass| k < superclass } &&        # It *is* a subclass of our supers
-        eval("defined?(::#{k}) && ::#{k}.object_id == k.object_id") # It *is* defined
-          # Note that we check defined? in case we find a removed class that has
-          # yet to be garbage collected.
-      subclasses << k
+      if superclasses.any? { |superclass| k < superclass } &&
+        (k.name.blank? || eval("defined?(::#{k}) && ::#{k}.object_id == k.object_id"))
+        subclasses << k
+      end
     end
+
     subclasses
   end
-  
+
   def extended_by #:nodoc:
     ancestors = class << self; ancestors end
     ancestors.select { |mod| mod.class == Module } - [ Object, Kernel ]