Froze rails gems

[depot.git] / vendor / rails / activesupport / lib / active_support / core_ext / module / inclusion.rb

diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/module/inclusion.rb b/vendor/rails/activesupport/lib/active_support/core_ext/module/inclusion.rb
new file mode 100644 (file)
index 0000000..4f23841
--- /dev/null
+++ b/vendor/rails/activesupport/lib/active_support/core_ext/module/inclusion.rb
@@ -0,0 +1,30 @@
+class Module
+  # Returns the classes in the current ObjectSpace where this module has been
+  # mixed in according to Module#included_modules.
+  #
+  #   module M
+  #   end
+  #   
+  #   module N
+  #     include M
+  #   end
+  #   
+  #   class C
+  #     include M
+  #   end
+  #   
+  #   class D < C
+  #   end
+  #
+  #   p M.included_in_classes # => [C, D]
+  #
+  def included_in_classes
+    classes = []
+    ObjectSpace.each_object(Class) { |k| classes << k if k.included_modules.include?(self) }
+
+    classes.reverse.inject([]) do |unique_classes, klass| 
+      unique_classes << klass unless unique_classes.collect { |k| k.to_s }.include?(klass.to_s)
+      unique_classes
+    end
+  end
+end
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