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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
****************************************************************************/
/*
tokenizer.h
*/
#ifndef TOKENIZER_H
#define TOKENIZER_H
#include "location.h"
#include <QtCore/qfile.h>
#include <QtCore/qstack.h>
#include <QtCore/qstring.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_default,
Tok_delete,
Tok_final,
Tok_override,
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_QPrivateSignal,
Tok_FirstKeyword = Tok_char,
Tok_LastKeyword = Tok_QPrivateSignal
};
/*
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
{
Q_DECLARE_TR_FUNCTIONS(QDoc::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; }
Location &tokenLocation() { return yyTokLoc; }
static void initialize();
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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