mojo: Add deserialization to python structs.

mojo/public/python/mojo/bindings/reflection.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """The metaclasses used by the mojo python bindings."""
 
 import itertools
 
 # pylint: disable=F0401
 import mojo.bindings.serialization as serialization
@@ skipping 89 matching lines @@
 
     # Add init
     dictionary['__init__'] = _StructInit
 
     # Add serialization method
     serialization_object = serialization.Serialization(groups)
     def Serialize(self, handle_offset=0):
       return serialization_object.Serialize(self, handle_offset)
     dictionary['Serialize'] = Serialize
 
+    def Deserialize(cls, data, handles):
+      result = cls.__new__(cls)
+      fields = {}
+      serialization_object.Deserialize(fields, data, handles)
+      result._fields = fields
+      return result
+    dictionary['Deserialize'] = classmethod(Deserialize)
+
     return type.__new__(mcs, name, bases, dictionary)
 
   # Prevent adding new attributes, or mutating constants.
   def __setattr__(mcs, key, value):
     raise AttributeError, 'can\'t set attribute'
 
   # Prevent deleting constants.
   def __delattr__(mcs, key):
     raise AttributeError, 'can\'t delete attribute'
 
@@ skipping 11 matching lines @@
   def Get(self):
     if field.name not in self._fields:
       self._fields[field.name] = field.GetDefaultValue()
     return self._fields[field.name]
 
   # pylint: disable=W0212
   def Set(self, value):
     self._fields[field.name] = field.field_type.Convert(value)
 
   return property(Get, Set)