| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the tools applications of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
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| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
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| ** Other Usage |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| #ifndef PARSER_H |
| #define PARSER_H |
| |
| #include <QStack> |
| #include "symbols.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| class Parser |
| { |
| public: |
| Parser():index(0), displayWarnings(true){} |
| Symbols symbols; |
| int index; |
| bool displayWarnings; |
| |
| QStack<QByteArray> currentFilenames; |
| |
| inline bool hasNext() const { return (index < symbols.size()); } |
| inline Token next() { if (index >= symbols.size()) return NOTOKEN; return symbols.at(index++).token; } |
| bool test(Token); |
| void next(Token); |
| void next(Token, const char *msg); |
| inline void prev() {--index;} |
| inline Token lookup(int k = 1); |
| inline const Symbol &symbol_lookup(int k = 1) { return symbols.at(index-1+k);} |
| inline Token token() { return symbols.at(index-1).token;} |
| inline QByteArray lexem() { return symbols.at(index-1).lexem();} |
| inline QByteArray unquotedLexem() { return symbols.at(index-1).unquotedLexem();} |
| inline const Symbol &symbol() { return symbols.at(index-1);} |
| |
| void error(int rollback); |
| void error(const char *msg = 0); |
| void warning(const char * = 0); |
| |
| }; |
| |
| inline bool Parser::test(Token token) |
| { |
| if (index < symbols.size() && symbols.at(index).token == token) { |
| ++index; |
| return true; |
| } |
| return false; |
| } |
| |
| inline Token Parser::lookup(int k) |
| { |
| const int l = index - 1 + k; |
| return l < symbols.size() ? symbols.at(l).token : NOTOKEN; |
| } |
| |
| inline void Parser::next(Token token) |
| { |
| if (!test(token)) |
| error(); |
| } |
| |
| inline void Parser::next(Token token, const char *msg) |
| { |
| if (!test(token)) |
| error(msg); |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |