inspectorJ -- JavaTM Profiler

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src/inspectorj/model/bytecodehighlighter.cpp

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/***************************************************************************
 *   inspectorJ - java profiler                                            *
 *   Copyright (C) 2007 by James May
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include <QtGui>
#include "inspectorj/model/bytecodehighlighter.h"

namespace inspectorj {
namespace model {

BytecodeHighlighter::BytecodeHighlighter(QTextDocument *parent)
    : QSyntaxHighlighter(parent)
{
    HighlightingRule rule;

    keywordFormat.setForeground(Qt::darkBlue);
    keywordFormat.setFontWeight(QFont::Bold);
    
    QStringList keywordPatterns;
    keywordPatterns << "\\bchar\\b" << "\\bclass\\b" << "\\bfinal\\b"
                    << "\\bdouble\\b" << "\\benum\\b" << "\\bextends\\b"
                    << "\\bint\\b" << "\\bsynchronized\\b" << "\\blong\\b" 
                    << "\\bprivate\\b" << "\\bprotected\\b" << "\\bpublic\\b"
                    << "\\bshort\\b" << "\\bsignals\\b" << "\\bsigned\\b"
                    << "\\bstatic\\b" << "\\bstruct\\b" << "\\bimplements\\b"                    
                    << "\\bunsigned\\b" << "\\bvirtual\\b" << "\\bsynthetic\\b"
                    << "\\babstract\\b" << "\\bvoid\\b" << "\\bvolatile\\b" << "\\binterface\\b";
    foreach (QString pattern, keywordPatterns) {
        rule.pattern = QRegExp(pattern);
        rule.format = keywordFormat;
        highlightingRules.append(rule);
    }
        
    headerFormat.setForeground(Qt::darkGreen);
    headerFormat.setFontWeight(QFont::Bold);
        
    QStringList headers;
    headers << "\\bCode:" << "\\bSignature:" << "\\bLineNumberTable:"
            << "\\bLocalVariableTable:" << "\\bException table:" << "\\bConstant value:";

    foreach (QString pattern, headers) {
        rule.pattern = QRegExp(pattern);
        rule.format = headerFormat;
        highlightingRules.append(rule);
    }
    
    numberFormat.setForeground(Qt::blue);
        
    QStringList numbers;
    numbers << "\\b[0-9]+\\b" << "\\b[0-9]+:" << "Bytecode generation failed."
            << "inspectorJ";
    foreach (QString pattern, numbers) {
        rule.pattern = QRegExp(pattern);
        rule.format = numberFormat;
        highlightingRules.append(rule);
    }    

    errFormat.setForeground(Qt::red);
    rule.pattern = QRegExp("ERROR:");
    rule.format = errFormat;
    highlightingRules.append(rule);
    
    classFormat.setFontWeight(QFont::Bold);
    classFormat.setForeground(Qt::darkMagenta);
    rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
    rule.format = classFormat;
    highlightingRules.append(rule);

    singleLineCommentFormat.setForeground(Qt::darkYellow);
    rule.pattern = QRegExp("//[^\n]*");
    rule.format = singleLineCommentFormat;
    highlightingRules.append(rule);

    multiLineCommentFormat.setForeground(Qt::darkYellow);

    quotationFormat.setForeground(Qt::darkGreen);
    rule.pattern = QRegExp("\".*\"");
    rule.format = quotationFormat;
    highlightingRules.append(rule);

    functionFormat.setFontItalic(true);
    functionFormat.setForeground(Qt::blue);
    rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
    rule.format = functionFormat;
    highlightingRules.append(rule);

    commentStartExpression = QRegExp("/\\*");
    commentEndExpression = QRegExp("\\*/");
}

void BytecodeHighlighter::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);
        }
    }
    setCurrentBlockState(0);

    int startIndex = 0;
    if (previousBlockState() != 1)
        startIndex = text.indexOf(commentStartExpression);

    while (startIndex >= 0) {
        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);
    }
}

} // end namespace model
} // end namespace inspectorj

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