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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "SimpleLexer.h"
#include "ObjectiveCTypeQualifiers.h"
#include <Lexer.h>
#include <Token.h>
#include <QtDebug>
using namespace CPlusPlus;
SimpleLexer::SimpleLexer()
: _lastState(0),
_skipComments(false),
_qtMocRunEnabled(true),
_objCEnabled(false),
_endedJoined(false)
{
}
SimpleLexer::~SimpleLexer()
{ }
bool SimpleLexer::qtMocRunEnabled() const
{
return _qtMocRunEnabled;
}
void SimpleLexer::setQtMocRunEnabled(bool enabled)
{
_qtMocRunEnabled = enabled;
}
bool SimpleLexer::objCEnabled() const
{
return _objCEnabled;
}
void SimpleLexer::setObjCEnabled(bool onoff)
{
_objCEnabled = onoff;
}
bool SimpleLexer::skipComments() const
{
return _skipComments;
}
void SimpleLexer::setSkipComments(bool skipComments)
{
_skipComments = skipComments;
}
bool SimpleLexer::endedJoined() const
{
return _endedJoined;
}
QList<Token> SimpleLexer::operator()(const QString &text, int state)
{
QList<Token> tokens;
const QByteArray bytes = text.toLatin1();
const char *firstChar = bytes.constData();
const char *lastChar = firstChar + bytes.size();
Lexer lex(firstChar, lastChar);
lex.setQtMocRunEnabled(_qtMocRunEnabled);
lex.setObjCEnabled(_objCEnabled);
lex.setStartWithNewline(true);
lex.setObjCEnabled(_objCEnabled);
if (! _skipComments)
lex.setScanCommentTokens(true);
if (state != -1)
lex.setState(state & 0xff);
bool inPreproc = false;
for (;;) {
Token tk;
lex(&tk);
if (tk.is(T_EOF_SYMBOL)) {
_endedJoined = tk.joined();
break;
}
QStringRef spell = text.midRef(lex.tokenOffset(), lex.tokenLength());
lex.setScanAngleStringLiteralTokens(false);
if (tk.f.newline && tk.is(T_POUND))
inPreproc = true;
else if (inPreproc && tokens.size() == 1 && tk.is(T_IDENTIFIER) &&
spell == QLatin1String("include"))
lex.setScanAngleStringLiteralTokens(true);
else if (_objCEnabled
&& inPreproc && tokens.size() == 1 && tk.is(T_IDENTIFIER) &&
spell == QLatin1String("import"))
lex.setScanAngleStringLiteralTokens(true);
tokens.append(tk);
}
_lastState = lex.state();
return tokens;
}
int SimpleLexer::tokenAt(const QList<Token> &tokens, unsigned offset)
{
for (int index = tokens.size() - 1; index >= 0; --index) {
const Token &tk = tokens.at(index);
if (tk.begin() <= offset && tk.end() >= offset)
return index;
}
return -1;
}
Token SimpleLexer::tokenAt(const QString &text,
unsigned offset,
int state,
bool qtMocRunEnabled)
{
SimpleLexer tokenize;
tokenize.setQtMocRunEnabled(qtMocRunEnabled);
const QList<Token> tokens = tokenize(text, state);
const int tokenIdx = tokenAt(tokens, offset);
return (tokenIdx == -1) ? Token() : tokens.at(tokenIdx);
}
int SimpleLexer::tokenBefore(const QList<Token> &tokens, unsigned offset)
{
for (int index = tokens.size() - 1; index >= 0; --index) {
const Token &tk = tokens.at(index);
if (tk.begin() <= offset)
return index;
}
return -1;
}
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