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105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
/*
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* This file is part of the KDE libraries
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* Copyright (C) 2012 Bernd Buschinski (b.buschinski@googlemail.com)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef JSONLEXER_H
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#define JSONLEXER_H
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#include "ustring.h"
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namespace KJS {
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class ExecState;
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class JSValue;
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class JSObject;
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class JSONParser;
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namespace JSONParserState {
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enum ParserState {
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JSONValue = 1,
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JSONObject,
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JSONArray
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};
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enum TokenType {
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TokLBracket, // [
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TokRBracket, // ]
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TokLBrace, // {
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TokRBrace, // }
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TokString,
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TokIdentifier,
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TokNumber,
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TokColon,
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TokLParen,
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TokRParen,
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TokComma,
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TokTrue,
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TokFalse,
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TokNull,
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TokEnd,
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TokError };
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};
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class JSONLexer {
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public:
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explicit JSONLexer(const UString& code);
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JSONParserState::TokenType next();
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JSONParserState::TokenType current();
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double currentNumber() const;
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UString currentString() const;
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private:
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inline JSONParserState::TokenType lexString();
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inline JSONParserState::TokenType lexNumber();
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UChar parseEscapeChar(bool *error);
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UString m_code;
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int m_pos;
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//Token Data
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JSONParserState::TokenType m_type;
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UString m_stringToken;
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double m_numberToken;
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};
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class JSONParser {
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public:
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explicit JSONParser(const UString& code);
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// Returns the root parsed JSValue*
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// or NULL on failure
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JSValue* tryParse(ExecState* exec);
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private:
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JSValue* parse(ExecState* exec, JSONParserState::ParserState state = JSONParserState::JSONValue);
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inline bool nextParseIsEOF();
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JSONParserState::ParserState m_state;
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JSONLexer m_lexer;
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};
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} // namespace KJS
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#endif // JSONLEXER_H
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