PointerTracker.h

/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * PointerTracker.h
 * Maintains a JsonPointer from a series of parse events.
 * Copyright (C) 2014 Simon Newton
 */

#ifndef COMMON_WEB_POINTERTRACKER_H_
#define COMMON_WEB_POINTERTRACKER_H_

#include <ola/base/Macro.h>
#include <ola/web/JsonPointer.h>
#include <sstream>
#include <string>
#include <vector>

namespace ola {
namespace web {

class PointerTracker {
 public:
 explicit PointerTracker(JsonPointer *pointer)
 : m_pointer(pointer) {
 }

 void OpenObject();

 void SetProperty(const std::string &property);

 void CloseObject();

 void OpenArray();

 void CloseArray();

 void IncrementIndex();

 private:
 enum TokenType {
 TOKEN_OBJECT,
 TOKEN_ARRAY,
 };

 struct Token {
 public:
 TokenType type;
 int index;
 bool property_set;

 explicit Token(TokenType type)
 : type(type), index(-1), property_set(false) {}
 };

 JsonPointer *m_pointer;
 std::vector<Token> m_tokens;

 DISALLOW_COPY_AND_ASSIGN(PointerTracker);
};
} // namespace web
} // namespace ola
#endif // COMMON_WEB_POINTERTRACKER_H_