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Diffstat (limited to 'src/shared/cplusplus/Lexer.h')
| -rw-r--r-- | src/shared/cplusplus/Lexer.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/shared/cplusplus/Lexer.h b/src/shared/cplusplus/Lexer.h new file mode 100644 index 0000000000..4cb62493db --- /dev/null +++ b/src/shared/cplusplus/Lexer.h @@ -0,0 +1,159 @@ +/*************************************************************************** +** +** This file is part of Qt Creator +** +** Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Qt Software Information (qt-info@nokia.com) +** +** +** Non-Open Source Usage +** +** Licensees may use this file in accordance with the Qt Beta Version +** License Agreement, Agreement version 2.2 provided with the Software or, +** alternatively, in accordance with the terms contained in a written +** agreement between you and Nokia. +** +** GNU General Public License Usage +** +** Alternatively, this file may be used under the terms of the GNU General +** Public License versions 2.0 or 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 GNU +** General Public Licensing requirements will be met: +** +** http://www.fsf.org/licensing/licenses/info/GPLv2.html and +** http://www.gnu.org/copyleft/gpl.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt GPL Exception +** version 1.3, included in the file GPL_EXCEPTION.txt in this package. +** +***************************************************************************/ +// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com> +// +// 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 without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +#ifndef CPLUSPLUS_LEXER_H +#define CPLUSPLUS_LEXER_H + +#include "CPlusPlusForwardDeclarations.h" +#include "Token.h" + +CPLUSPLUS_BEGIN_HEADER +CPLUSPLUS_BEGIN_NAMESPACE + +class CPLUSPLUS_EXPORT Lexer +{ + Lexer(const Lexer &other); + void operator =(const Lexer &other); + +public: + enum State { + DefaultState, + MultiLineCommentState + }; + + Lexer(TranslationUnit *unit); + Lexer(const char *firstChar, const char *lastChar); + ~Lexer(); + + Control *control() const; + TranslationUnit *translationUnit() const; + + bool qtMocRunEnabled() const; + void setQtMocRunEnabled(bool onoff); + + bool objCEnabled() const; + void setObjCEnabled(bool onoff); + + void scan(Token *tok); + + inline void operator()(Token *tok) + { scan(tok); } + + unsigned tokenOffset() const; + unsigned tokenLength() const; + const char *tokenBegin() const; + const char *tokenEnd() const; + unsigned currentLine() const; + + bool scanCommentTokens() const; + void setScanCommentTokens(bool onoff); + + bool scanKeywords() const; + void setScanKeywords(bool onoff); + + bool scanAngleStringLiteralTokens() const; + void setScanAngleStringLiteralTokens(bool onoff); + + void setStartWithNewline(bool enabled); + + int state() const; + void setState(int state); + + bool isIncremental() const; + void setIncremental(bool isIncremental); + +private: + void scan_helper(Token *tok); + void setSource(const char *firstChar, const char *lastChar); + static int classify(const char *string, int length, bool q); + static int classifyObjCAtKeyword(const char *s, int n); + static int classifyOperator(const char *string, int length); + + inline void yyinp() + { + if (++_currentChar == _lastChar) + _yychar = 0; + else { + _yychar = *_currentChar; + if (_yychar == '\n') + pushLineStartOffset(); + } + } + + void pushLineStartOffset(); + +private: + TranslationUnit *_translationUnit; + const char *_firstChar; + const char *_currentChar; + const char *_lastChar; + const char *_tokenStart; + unsigned char _yychar; + int _state; + union { + unsigned _flags; + struct { + unsigned _isIncremental: 1; + unsigned _scanCommentTokens: 1; + unsigned _scanKeywords: 1; + unsigned _scanAngleStringLiteralTokens: 1; + unsigned _qtMocRunEnabled: 1; + unsigned _objCEnabled: 1; + }; + }; + unsigned _currentLine; +}; + +CPLUSPLUS_END_NAMESPACE +CPLUSPLUS_END_HEADER + +#endif // CPLUSPLUS_LEXER_H |