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):
  10     if args not in memory:
  11       memory[args] = fn(*args)
  12     return memory[args]
  13   return impl