/*******************************************************************************
 * Copyright (c) 2004-2008 Istvan Rath and Daniel Varro
 * 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
 *
 * Contributors:
 *    Istvan Rath - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.editor.text.light.vtcl;

import java.util.ArrayList;
import java.util.List;

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.RuleBasedScanner;
import org.eclipse.jface.text.rules.SingleLineRule;
import org.eclipse.jface.text.rules.WhitespaceRule;
import org.eclipse.jface.text.rules.WordRule;
import org.eclipse.viatra2.editor.text.light.IVTEConstants;
import org.eclipse.viatra2.editor.text.light.VTEColorProvider;
import org.eclipse.viatra2.editor.text.light.VTEColorToken;
import org.eclipse.viatra2.editor.text.light.vtml.VTMLWhitespaceDetector;
import org.eclipse.viatra2.editor.text.light.vtml.VTMLWordDetector;


public class VTCLCodeScanner extends RuleBasedScanner {
	public VTCLCodeScanner(VTEColorProvider provider,VTEColorToken vct) {

		IToken keyword = vct.KEYWORD;
		IToken string = vct.STRING;
		IToken comment = vct.COMMENT;
		IToken other = vct.OTHER;

		String[] keywords = IVTEConstants.vtclKeywords;
		List<IRule> rules= new ArrayList<IRule>();

		rules.add(new MultiLineRule("/*","*/",comment));
		rules.add(new EndOfLineRule("//", comment));
		rules.add(new SingleLineRule("\"", "\"", string, '\\'));
		rules.add(new SingleLineRule("'", "'", string, '\\'));
		// we can use VTML whitespace and word detectors
		rules.add(new WhitespaceRule(new VTMLWhitespaceDetector()));
		WordRule wordRule= new WordRule(new VTMLWordDetector(), other);
		for (int i= 0; i < keywords.length; i++)
			wordRule.addWord(keywords[i], keyword);
		rules.add(wordRule);

		IRule[] result= new IRule[rules.size()];
		rules.toArray(result);
		setRules(result);
	}
}