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-rw-r--r--ext/json/lib/json/add/struct.rb30
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
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+++ 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