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/*
* CPPHighlighter.cpp
*
* Created by Christophe Daudin on 12/05/09.
* Copyright 2009 Grame. All rights reserved.
*
* 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.
*
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <QtGui>
#include "CPPHighlighter.h"
//! [0]
CPPHighlighter::CPPHighlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
HighlightingRule rule;
keywordFormat.setForeground(Qt::darkBlue);
keywordFormat.setFontWeight(QFont::Bold);
QStringList keywordPatterns;
keywordPatterns << "\\bchar\\b" << "\\bclass\\b" << "\\bconst\\b"
<< "\\bdouble\\b" << "\\benum\\b" << "\\bexplicit\\b"
<< "\\bfriend\\b" << "\\binline\\b" << "\\bint\\b"
<< "\\blong\\b" << "\\bnamespace\\b" << "\\boperator\\b"
<< "\\bprivate\\b" << "\\bprotected\\b" << "\\bpublic\\b"
<< "\\bshort\\b" << "\\bsignals\\b" << "\\bsigned\\b"
<< "\\bslots\\b" << "\\bstatic\\b" << "\\bstruct\\b"
<< "\\btemplate\\b" << "\\btypedef\\b" << "\\btypename\\b"
<< "\\bunion\\b" << "\\bunsigned\\b" << "\\bvirtual\\b"
<< "\\bvoid\\b" << "\\bvolatile\\b";
foreach (QString pattern, keywordPatterns) {
rule.pattern = QRegExp(pattern);
rule.format = keywordFormat;
highlightingRules.append(rule);
//! [0] //! [1]
}
//! [1]
//! [2]
classFormat.setFontWeight(QFont::Bold);
classFormat.setForeground(Qt::darkMagenta);
rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
rule.format = classFormat;
highlightingRules.append(rule);
//! [2]
//! [3]
singleLineCommentFormat.setForeground(Qt::darkGreen);
rule.pattern = QRegExp("//[^\n]*");
rule.format = singleLineCommentFormat;
highlightingRules.append(rule);
multiLineCommentFormat.setForeground(Qt::darkGreen);
//! [3]
//! [4]
quotationFormat.setForeground(Qt::darkRed);
rule.pattern = QRegExp("\".*\"");
rule.format = quotationFormat;
highlightingRules.append(rule);
//! [4]
//! [5]
functionFormat.setFontItalic(true);
functionFormat.setForeground(Qt::blue);
rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
rule.format = functionFormat;
highlightingRules.append(rule);
//! [5]
//------ preprocessor define
//! [2]
classFormat.setFontWeight(QFont::Bold);
classFormat.setForeground( QColor(186, 118, 63) );
rule.pattern = QRegExp("^\\s*#.*");
rule.format = classFormat;
highlightingRules.append(rule);
//! [2]
//! [6]
commentStartExpression = QRegExp("/\\*");
commentEndExpression = QRegExp("\\*/");
}
//! [6]
//! [7]
void CPPHighlighter::highlightBlock(const QString &text)
{
foreach (HighlightingRule rule, highlightingRules) {
QRegExp expression(rule.pattern);
int index = text.indexOf(expression);
while (index >= 0) {
int length = expression.matchedLength();
setFormat(index, length, rule.format);
index = text.indexOf(expression, index + length);
}
}
//! [7]
//! [8]
setCurrentBlockState(0);
//! [8]
//! [9]
int startIndex = 0;
if (previousBlockState() != 1)
startIndex = text.indexOf(commentStartExpression);
//! [9] //! [10]
while (startIndex >= 0) {
//! [10] //! [11]
int endIndex = text.indexOf(commentEndExpression, startIndex);
int commentLength;
if (endIndex == -1) {
setCurrentBlockState(1);
commentLength = text.length() - startIndex;
} else {
commentLength = endIndex - startIndex
+ commentEndExpression.matchedLength();
}
setFormat(startIndex, commentLength, multiLineCommentFormat);
startIndex = text.indexOf(commentStartExpression,
startIndex + commentLength);
}
}
//! [11]
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