TexArgScanner.java

/*
 * $Id$
 *
 * Copyright (c) 2004-2005 by the TeXlapse Team.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package net.sourceforge.texlipse.editor.scanner;

import java.util.ArrayList;
import java.util.List;

import net.sourceforge.texlipse.editor.ColorManager;

import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.rules.EndOfLineRule;
import org.eclipse.jface.text.rules.IRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.NumberRule;
import org.eclipse.jface.text.rules.RuleBasedScanner;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WhitespaceRule;
import org.eclipse.jface.text.rules.WordRule;

/**
 * TexArgScanner is used as a scanner for the "__tex_curlyBracketPartition"
 * content type areas.
 * It uses defined rules to detect sequences and it returns the
 * specified token that satisfies a rule. The token defines how the
 * characters are presented.
 * 
 * @see net.sourceforge.texlipse.editor.partitioner.FastLaTeXPartitionScanner
 * @author Matthias Erll
 */
public class TexArgScanner extends RuleBasedScanner {
    
    /**
     * A default constructor.
     * @param manager
     */
    public TexArgScanner(ColorManager manager) {
        IToken commentToken = new Token(new TextAttribute(manager
                .getColor(ColorManager.COMMENT),
                null,
                manager.getStyle(ColorManager.COMMENT_STYLE)));

        //Commands are colored in argument color with command styles 
        IToken commandToken = new Token(
                new TextAttribute(
                        manager.getColor(ColorManager.CURLY_BRACKETS),
                        null,
                        manager.getStyle(ColorManager.COMMAND_STYLE)));

        List<IRule> rules = new ArrayList<IRule>();
        rules.add(new EndOfLineRule("%", commentToken, '\\'));
        rules.add(new WhitespaceRule(new WhitespaceDetector()));
        rules.add(new WordRule(new TexWord(), commandToken));

        IRule[] result = new IRule[rules.size()];
        rules.toArray(result);
        setRules(result);
    }
}