components/safe_json/testing_json_parser.cc

   1 // Copyright 2015 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 #include "components/safe_json/testing_json_parser.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/json/json_reader.h"
  10 #include "base/location.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/message_loop/message_loop.h"
  13 #include "base/values.h"
  14
  15 namespace safe_json {
  16
  17 namespace {
  18
  19 SafeJsonParser* CreateTestingJsonParser(
  20     const std::string& unsafe_json,
  21     const SafeJsonParser::SuccessCallback& success_callback,
  22     const SafeJsonParser::ErrorCallback& error_callback) {
  23   return new TestingJsonParser(unsafe_json, success_callback, error_callback);
  24 }
  25
  26 }  // namespace
  27
  28 TestingJsonParser::ScopedFactoryOverride::ScopedFactoryOverride() {
  29   SafeJsonParser::SetFactoryForTesting(&CreateTestingJsonParser);
  30 }
  31
  32 TestingJsonParser::ScopedFactoryOverride::~ScopedFactoryOverride() {
  33   SafeJsonParser::SetFactoryForTesting(nullptr);
  34 }
  35
  36 TestingJsonParser::TestingJsonParser(const std::string& unsafe_json,
  37                                      const SuccessCallback& success_callback,
  38                                      const ErrorCallback& error_callback)
  39     : unsafe_json_(unsafe_json),
  40       success_callback_(success_callback),
  41       error_callback_(error_callback) {}
  42
  43 TestingJsonParser::~TestingJsonParser() {}
  44
  45 void TestingJsonParser::Start() {
  46   int error_code;
  47   std::string error;
  48   scoped_ptr<base::Value> value = base::JSONReader::ReadAndReturnError(
  49       unsafe_json_, base::JSON_PARSE_RFC, &error_code, &error);
  50
  51   // Run the callback asynchronously.
  52   base::MessageLoop::current()->PostTask(
  53       FROM_HERE, value ? base::Bind(success_callback_, base::Passed(&value))
  54                        : base::Bind(error_callback_, error));
  55   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
  56 }
  57
  58 }  // namespace