1 files changed, 28 insertions, 0 deletions
diff --git a/ext/json/lib/json/add/bigdecimal.rb b/ext/json/lib/json/add/bigdecimal.rb
new file mode 100644
index 0000000000..0ef69f12e0
--- /dev/null
+++ b/ext/json/lib/json/add/bigdecimal.rb
@@ -0,0 +1,28 @@
+unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
+  require 'json'
+end
+defined?(::BigDecimal) or require 'bigdecimal'
+
+class BigDecimal
+  # Import a JSON Marshalled object.
+  #
+  # method used for JSON marshalling support.
+  def self.json_create(object)
+    BigDecimal._load object['b']
+  end
+
+  # Marshal the object to JSON.
+  #
+  # method used for JSON marshalling support.
+  def as_json(*)
+    {
+      JSON.create_id => self.class.name,
+      'b'            => _dump,
+    }
+  end
+
+  # return the JSON value
+  def to_json(*)
+    as_json.to_json
+  end
+end