tools/json_schema_compiler/memoize.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 def memoize(fn):
   6   '''Decorates |fn| to memoize.
   7   '''
   8   memory = {}
   9   def impl(*args, **optargs):
  10     full_args = args + tuple(optargs.iteritems())
  11     if full_args not in memory:
  12       memory[full_args] = fn(*args, **optargs)
  13     return memory[full_args]
  14   return impl