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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia 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 Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*
tokenizer.h
*/
#ifndef TOKENIZER_H
#define TOKENIZER_H
#include <qfile.h>
#include <qstack.h>
#include <qstring.h>
#include "location.h"
QT_BEGIN_NAMESPACE
/*
Here come the C++ tokens we support. The first part contains
all-purpose tokens; then come keywords.
If you add a keyword, make sure to modify the keyword array in
tokenizer.cpp as well, and possibly adjust Tok_FirstKeyword and
Tok_LastKeyword.
*/
enum { Tok_Eoi, Tok_Ampersand, Tok_Aster, Tok_Caret, Tok_LeftParen,
Tok_RightParen, Tok_LeftParenAster, Tok_Equal, Tok_LeftBrace,
Tok_RightBrace, Tok_Semicolon, Tok_Colon, Tok_LeftAngle,
Tok_RightAngle, Tok_Comma, Tok_Ellipsis, Tok_Gulbrandsen,
Tok_LeftBracket, Tok_RightBracket, Tok_Tilde, Tok_SomeOperator,
Tok_Number, Tok_String, Tok_Doc, Tok_Comment, Tok_Ident, Tok_At,
Tok_char, Tok_class, Tok_const, Tok_double, Tok_enum,
Tok_explicit, Tok_friend, Tok_inline, Tok_int, Tok_long,
Tok_namespace, Tok_operator, Tok_private, Tok_protected,
Tok_public, Tok_short, Tok_signals, Tok_signed, Tok_slots,
Tok_static, Tok_struct, Tok_template, Tok_typedef,
Tok_typename, Tok_union, Tok_unsigned, Tok_using, Tok_virtual,
Tok_void, Tok_volatile, Tok_int64, Tok_Q_OBJECT, Tok_Q_OVERRIDE,
Tok_Q_PROPERTY, Tok_Q_PRIVATE_PROPERTY, Tok_Q_DECLARE_SEQUENTIAL_ITERATOR,
Tok_Q_DECLARE_MUTABLE_SEQUENTIAL_ITERATOR,
Tok_Q_DECLARE_ASSOCIATIVE_ITERATOR,
Tok_Q_DECLARE_MUTABLE_ASSOCIATIVE_ITERATOR,
Tok_Q_DECLARE_FLAGS, Tok_Q_SIGNALS, Tok_Q_SLOTS, Tok_QT_COMPAT,
Tok_QT_COMPAT_CONSTRUCTOR, Tok_QT_DEPRECATED, Tok_QT_MOC_COMPAT,
Tok_QT_MODULE, Tok_QT3_SUPPORT, Tok_QT3_SUPPORT_CONSTRUCTOR,
Tok_QT3_MOC_SUPPORT, Tok_QDOC_PROPERTY,
Tok_FirstKeyword = Tok_char, Tok_LastKeyword = Tok_QDOC_PROPERTY };
/*
The Tokenizer class implements lexical analysis of C++ source
files.
Not every operator or keyword of C++ is recognized; only those
that are interesting to us. Some Qt keywords or macros are also
recognized.
*/
class Tokenizer
{
public:
Tokenizer(const Location& loc, const QByteArray &in);
Tokenizer(const Location& loc, QFile &file);
~Tokenizer();
int getToken();
void setParsingFnOrMacro(bool macro) { parsingMacro = macro; }
bool parsingFnOrMacro() const { return parsingMacro; }
const Location &location() const { return yyTokLoc; }
QString previousLexeme() const;
QString lexeme() const;
QString version() const { return yyVersion; }
int braceDepth() const { return yyBraceDepth; }
int parenDepth() const { return yyParenDepth; }
int bracketDepth() const { return yyBracketDepth; }
static void initialize(const Config &config);
static void terminate();
static bool isTrue(const QString &condition);
private:
void init();
void start(const Location& loc);
/*
This limit on the length of a lexeme seems fairly high, but a
doc comment can be arbitrarily long. The previous 65,536 limit
was reached by Mark Summerfield.
*/
enum { yyLexBufSize = 524288 };
int getch()
{
return yyPos == yyIn.size() ? EOF : yyIn[yyPos++];
}
inline int getChar()
{
if (yyCh == EOF)
return EOF;
if (yyLexLen < yyLexBufSize - 1) {
yyLex[yyLexLen++] = (char) yyCh;
yyLex[yyLexLen] = '\0';
}
yyCurLoc.advance(yyCh);
int ch = getch();
if (ch == EOF)
return EOF;
// cast explicitly to make sure the value of ch
// is in range [0..255] to avoid assert messages
// when using debug CRT that checks its input.
return int(uint(uchar(ch)));
}
int getTokenAfterPreprocessor();
void pushSkipping(bool skip);
bool popSkipping();
Location yyTokLoc;
Location yyCurLoc;
char *yyLexBuf1;
char *yyLexBuf2;
char *yyPrevLex;
char *yyLex;
size_t yyLexLen;
QStack<bool> yyPreprocessorSkipping;
int yyNumPreprocessorSkipping;
int yyBraceDepth;
int yyParenDepth;
int yyBracketDepth;
int yyCh;
QString yyVersion;
bool parsingMacro;
protected:
QByteArray yyIn;
int yyPos;
};
QT_END_NAMESPACE
#endif
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