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/***************************************************************************
**
** 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.
**
***************************************************************************/
#include "TokenUnderCursor.h"
#include <Token.h>
#include <QTextCursor>
#include <QTextBlock>
#include <climits>
using namespace CPlusPlus;
TokenUnderCursor::TokenUnderCursor()
{ }
TokenUnderCursor::~TokenUnderCursor()
{ }
SimpleToken TokenUnderCursor::operator()(const QTextCursor &cursor) const
{
SimpleLexer tokenize;
tokenize.setObjCEnabled(true);
tokenize.setSkipComments(false);
QTextBlock block = cursor.block();
int column = cursor.columnNumber();
QList<SimpleToken> tokens = tokenize(block.text(), previousBlockState(block));
for (int index = tokens.size() - 1; index != -1; --index) {
const SimpleToken &tk = tokens.at(index);
if (tk.position() < column)
return tk;
}
return SimpleToken();
}
int TokenUnderCursor::previousBlockState(const QTextBlock &block) const
{
const QTextBlock prevBlock = block.previous();
if (prevBlock.isValid()) {
int state = prevBlock.userState();
if (state != -1)
return state;
}
return 0;
}
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