Python bindings: Add helper function to create InterfaceRequest

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
 import logging
 import sys
 
 # pylint: disable=F0401
 import mojo_bindings.messaging as messaging
 import mojo_bindings.promise as promise
 import mojo_bindings.serialization as serialization
+import mojo_system
 
 
 class MojoEnumType(type):
   """Meta class for enumerations.
 
   Usage:
     class MyEnum(object):
       __metaclass__ = MojoEnumType
       VALUES = [
         ('A', 0),
@@ skipping 241 matching lines @@
     def Cleanup(_):
       retainer.release()
     error_handler.AddCallback(Cleanup)
 
     # Give an instance manager to the implementation to allow it to close
     # the connection.
     impl.manager = InstanceManager(router, error_handler)
 
     router.Start()
 
+  def NewRequest(self):
+    pipe = mojo_system.MessagePipe()
+    return (self.Proxy(pipe.handle0), InterfaceRequest(pipe.handle1))
+
   def _InternalProxy(self, router, error_handler):
     if error_handler is None:
       error_handler = _ProxyErrorHandler()
 
     if not self._proxy_class:
       dictionary = {
         '__module__': __name__,
         '__init__': _ProxyInit,
       }
       for method in self.methods:
@@ skipping 265 matching lines @@
       logging.warning(
           'Error occured in accept method. Connection will be closed.')
       if self.impl.manager:
         self.impl.manager.Close()
       return False
   return Accept
 
 
 def _NotImplemented(*_1, **_2):
   raise NotImplementedError()