Import refactored library. See MIGRATING.MD for details

lib/google/apis/core/hashable.rb

@@ -0,0 +1,44 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+module Google
+  module Apis
+    module Core
+      # Adds to_hash to objects
+      module Hashable
+        # Convert object to hash representation
+        #
+        # @return [Hash]
+        def to_h
+          Hash[instance_variables.map { |k| [k[1..-1].to_sym, Hashable.process_value(instance_variable_get(k))] }]
+        end
+
+        # Recursively serialize an object
+        #
+        # @param [Object] val
+        # @return [Hash]
+        def self.process_value(val)
+          case val
+          when Hash
+            Hash[val.map {|k, v| [k.to_sym, Hashable.process_value(v)] }]
+          when Array
+            val.map{ |v| Hashable.process_value(v) }
+          else
+            val.respond_to?(:to_h) ? val.to_h : val
+          end
+        end
+      end
+    end
+  end
+end