/* Copyright (C) 2011-2014 Laurent Montel <montel@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "templatessyntaxhighlighter.h"
#include "templatesutil.h"
#include <QPalette>

using namespace TemplateParser;

TemplatesSyntaxHighlighter::TemplatesSyntaxHighlighter( QTextDocument *doc )
    : QSyntaxHighlighter( doc )
{
    init();
}

TemplatesSyntaxHighlighter::~TemplatesSyntaxHighlighter()
{
}

void TemplatesSyntaxHighlighter::highlightBlock( const QString &text )
{
    Q_FOREACH ( const Rule &rule, m_rules ) {
        const QRegExp expression( rule.pattern );
        int index = expression.indexIn( text );
        int length = 0;
        while ( index >= 0 && ( length = expression.matchedLength() ) > 0 ) {
            setFormat( index, length, rule.format );
            index = expression.indexIn( text, index + length );
        }
    }
}

void TemplatesSyntaxHighlighter::init()
{
    QTextCharFormat keywordFormat;
    QPalette palette;
    keywordFormat.setForeground( palette.link() );

    QStringList keywords;
    keywords << Util::keywords();

    Q_FOREACH ( const QString & s, keywords ) {
        const QRegExp regex( s, Qt::CaseInsensitive );
        m_rules.append( Rule( regex, keywordFormat ) );
    }

    QTextCharFormat keywordWithArgsFormat;
    keywordWithArgsFormat.setForeground( palette.link() );
    QStringList keywordsWithArgs;
    keywordsWithArgs << Util::keywordsWithArgs();

    Q_FOREACH ( const QString & s, keywordsWithArgs ) {
        const QRegExp regex( s, Qt::CaseInsensitive );
        m_rules.append( Rule( regex, keywordWithArgsFormat ) );
    }

}