| # Copyright 2012 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import copy |
| |
| import json_parse |
| |
| |
| def Load(filename): |
| try: |
| with open(filename, 'rb') as handle: |
| schemas = json_parse.Parse(handle.read().decode('utf8')) |
| return schemas |
| except: |
| print('FAILED: Exception encountered while loading "%s"' % filename) |
| raise |
| |
| |
| # A dictionary mapping |filename| to the object resulting from loading the JSON |
| # at |filename|. |
| _cache = {} |
| |
| |
| def CachedLoad(filename): |
| """Equivalent to Load(filename), but caches results for subsequent calls""" |
| if filename not in _cache: |
| _cache[filename] = Load(filename) |
| # Return a copy of the object so that any changes a caller makes won't affect |
| # the next caller. |
| return copy.deepcopy(_cache[filename]) |
