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# Copyright (c) 2012 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.
import copy
import json
import os.path
import sys
_script_path = os.path.realpath(__file__)
sys.path.insert(0, os.path.normpath(_script_path + "/../../"))
import json_comment_eater
import schema_util
def DeleteNocompileNodes(item):
def HasNocompile(thing):
return type(thing) == dict and thing.get('nocompile', False)
if type(item) == dict:
toDelete = []
for key, value in item.items():
if HasNocompile(value):
toDelete.append(key)
else:
DeleteNocompileNodes(value)
for key in toDelete:
del item[key]
elif type(item) == list:
item[:] = [DeleteNocompileNodes(thing)
for thing in item if not HasNocompile(thing)]
return item
def Load(filename):
with open(filename, 'r') as handle:
schemas = DeleteNocompileNodes(
json.loads(json_comment_eater.Nom(handle.read())))
schema_util.PrefixSchemasWithNamespace(schemas)
return schemas
# 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])
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