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// Copyright 2013 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.
#ifndef CHROME_BROWSER_SAFE_JSON_PARSER_H_
#define CHROME_BROWSER_SAFE_JSON_PARSER_H_
#include <string>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "content/public/browser/utility_process_host_client.h"
namespace base {
class ListValue;
class Value;
}
namespace IPC {
class Message;
}
// SafeJsonParser parses a given JSON safely via a utility process. The object
// is ref-counted and kept alive after Start() is called until one of the two
// callbacks is called.
class SafeJsonParser : public content::UtilityProcessHostClient {
public:
typedef base::Callback<void(scoped_ptr<base::Value>)> SuccessCallback;
typedef base::Callback<void(const std::string&)> ErrorCallback;
SafeJsonParser(const std::string& unsafe_json,
const SuccessCallback& success_callback,
const ErrorCallback& error_callback);
void Start();
private:
virtual ~SafeJsonParser();
void StartWorkOnIOThread();
void OnJSONParseSucceeded(const base::ListValue& wrapper);
void OnJSONParseFailed(const std::string& error_message);
void ReportResults();
void ReportResultOnUIThread();
// Implementing pieces of the UtilityProcessHostClient interface.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
const std::string unsafe_json_;
SuccessCallback success_callback_;
ErrorCallback error_callback_;
scoped_ptr<base::Value> parsed_json_;
std::string error_;
DISALLOW_COPY_AND_ASSIGN(SafeJsonParser);
};
#endif // CHROME_BROWSER_SAFE_JSON_PARSER_H_
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