/**
 * Copyright (c) 2014, Timothy Stack
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TIMOTHY STACK AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @file json_op.hh
 */

#ifndef __json_op_hh
#define __json_op_hh

#include <sys/types.h>

#include <string>

#include "json_ptr.hh"
#include "yajl/api/yajl_parse.h"

class json_op {
    static int handle_null(void *ctx);
    static int handle_boolean(void *ctx, int boolVal);
    static int handle_number(void *ctx, const char *numberVal, size_t numberLen);
    static int handle_string(void *ctx, const unsigned char * stringVal, size_t len);
    static int handle_start_map(void *ctx);
    static int handle_map_key(void *ctx, const unsigned char * key, size_t len);
    static int handle_end_map(void *ctx);
    static int handle_start_array(void *ctx);
    static int handle_end_array(void *ctx);

public:

    const static yajl_callbacks gen_callbacks;
    const static yajl_callbacks ptr_callbacks;

    json_op(json_ptr &ptr)
        : jo_depth(0),
          jo_array_index(-1),
          jo_ptr(ptr),
          jo_ptr_data(NULL),
          jo_ptr_error_code(0) {
        memset(&this->jo_ptr_callbacks, 0, sizeof(this->jo_ptr_callbacks));
    };

    bool check_index(bool primitive = true) {
        return this->jo_ptr.at_index(this->jo_depth, this->jo_array_index, primitive);
    };

    int jo_depth;
    int jo_array_index;

    json_ptr jo_ptr;
    yajl_callbacks jo_ptr_callbacks;
    void *jo_ptr_data;
    std::string jo_ptr_error;
    int jo_ptr_error_code;
};

#endif
