Added reusable reloading support through the inclusion of the Relodable module that all subclasses of ActiveRecord::Base, ActiveRecord::Observer, ActiveController::Base, and ActionMailer::Base automatically gets [DHH]. Added auto-loading support for classes in modules, so Conductor::Migration will look for conductor/migration.rb and Conductor::Database::Settings will look for conductor/database/settings.rb [Nicholas Seckar]. Refactored extensions to module, class, and object in active support [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3493 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 44 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/class/attribute_accessors.rb b/activesupport/lib/active_support/core_ext/class/attribute_accessors.rb
new file mode 100644
index 0000000000..93a7d48f69
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/class/attribute_accessors.rb
@@ -0,0 +1,44 @@
+# Extends the class object with class and instance accessors for class attributes,
+# just like the native attr* accessors for instance attributes.
+class Class # :nodoc:
+  def cattr_reader(*syms)
+    syms.flatten.each do |sym|
+      class_eval(<<-EOS, __FILE__, __LINE__)
+        unless defined? @@#{sym}
+          @@#{sym} = nil
+        end
+
+        def self.#{sym}
+          @@#{sym}
+        end
+
+        def #{sym}
+          @@#{sym}
+        end
+      EOS
+    end
+  end
+
+  def cattr_writer(*syms)
+    syms.flatten.each do |sym|
+      class_eval(<<-EOS, __FILE__, __LINE__)
+        unless defined? @@#{sym}
+          @@#{sym} = nil
+        end
+
+        def self.#{sym}=(obj)
+          @@#{sym} = obj
+        end
+
+        def #{sym}=(obj)
+          @@#{sym} = obj
+        end
+      EOS
+    end
+  end
+
+  def cattr_accessor(*syms)
+    cattr_reader(*syms)
+    cattr_writer(*syms)
+  end
+end