1 files changed, 30 insertions, 0 deletions
diff --git a/ext/json/lib/json/add/struct.rb b/ext/json/lib/json/add/struct.rb
new file mode 100644
index 0000000000..6847cde99b
--- /dev/null
+++ b/ext/json/lib/json/add/struct.rb
@@ -0,0 +1,30 @@
+unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
+  require 'json'
+end
+
+# Struct serialization/deserialization
+class Struct
+
+  # Deserializes JSON string by constructing new Struct object with values
+  # <tt>v</tt> serialized by <tt>to_json</tt>.
+  def self.json_create(object)
+    new(*object['v'])
+  end
+
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
+    klass = self.class.name
+    klass.to_s.empty? and raise JSON::JSONError, "Only named structs are supported!"
+    {
+      JSON.create_id => klass,
+      'v'            => values,
+    }
+  end
+
+  # Stores class name (Struct) with Struct values <tt>v</tt> as a JSON string.
+  # Only named structs are supported.
+  def to_json(*args)
+    as_json.to_json(*args)
+  end
+end