json.h

/*************************************************************************/
/*  json.h                                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur.                 */
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/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
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/* distribute, sublicense, and/or sell copies of the Software, and to    */
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/* the following conditions:                                             */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/*************************************************************************/
#ifndef JSON_H
#define JSON_H



#include "variant.h"


class JSON {

    enum TokenType {
        TK_CURLY_BRACKET_OPEN,
        TK_CURLY_BRACKET_CLOSE,
        TK_BRACKET_OPEN,
        TK_BRACKET_CLOSE,
        TK_IDENTIFIER,
        TK_STRING,
        TK_NUMBER,
        TK_COLON,
        TK_COMMA,
        TK_EOF,
        TK_MAX
    };

    enum Expecting {

        EXPECT_OBJECT,
        EXPECT_OBJECT_KEY,
        EXPECT_COLON,
        EXPECT_OBJECT_VALUE,
    };

    struct Token {

        TokenType type;
        Variant value;
    };

    static const char * tk_name[TK_MAX];

    static String _print_var(const Variant& p_var);

    static Error _get_token(const CharType *p_str,int &index, int p_len,Token& r_token,int &line,String &r_err_str);
    static Error _parse_value(Variant &value,Token& token,const CharType *p_str,int &index, int p_len,int &line,String &r_err_str);
    static Error _parse_array(Array &array,const CharType *p_str,int &index, int p_len,int &line,String &r_err_str);
    static Error _parse_object(Dictionary &object,const CharType *p_str,int &index, int p_len,int &line,String &r_err_str);

public:
    static String print(const Dictionary& p_dict);
    static Error parse(const String& p_json,Dictionary& r_ret,String &r_err_str,int &r_err_line);
};

#endif // JSON_H