/*
 * Created on May 14, 2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package CDBuilder.couplingSyntaxEditor;
import java.util.ArrayList;
import java.util.List;

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.RuleBasedScanner;
import org.eclipse.jface.text.rules.SingleLineRule;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WordRule;

/**
 *Sets all the rules for comments, strings, tags and text
 *Creates the tokens for returning when finding different syntax
 *
 *@author Sherwin Sim and Lucie Zhao
 *@version 1 May - August 2003
 * 
 */

public class cseScanner extends RuleBasedScanner {
	/** all the keywords (tags) */
	private static String[] fgKeyword= {"components","in", "out", "Link" }; 
	/** the starting tag, must be wrapped around in [] */
	private static String fgStart = "top";
	/** a separating tag */
	private static String fgOther = "@";
	/**
	 * Sets the rules and tokens and match them up
	 * There are rules for comments, containers, variables, strings
	 * and character constants
	 * @param manager the manager that sets the syntax colour based on these rules
	 */
	public cseScanner(ColorManager manager) {
		
		//initialize all the tokens with the different colours
		IToken keyword= new Token(new TextAttribute(manager.getColor(ICDColorConstants.KEYWORD)));
		IToken string= new Token(new TextAttribute(manager.getColor(ICDColorConstants.DEFAULT)));
		IToken comment= new Token(new TextAttribute(manager.getColor(ICDColorConstants.COMMENT)));
		IToken variable= new Token(new TextAttribute(manager.getColor(ICDColorConstants.VARIABLE)));
		IToken container =new Token(new TextAttribute(manager.getColor(ICDColorConstants.CONTAINER)));
		
		//make a list of rules
		List rules= new ArrayList();
	
		// Add rule for single line comments.
		rules.add(new EndOfLineRule("%", comment)); //$NON-NLS-1$
	
		//	Add rule for containers
		rules.add(new SingleLineRule("[", "]", container));
		//add rule for variables, anything after :
		rules.add(new EndOfLineRule(":", variable));
		// Add rule for strings and character constants.
		rules.add(new SingleLineRule("\"", "\"", string, '\\'));
		rules.add(new SingleLineRule("'", "'", string, '\\')); 
		//make a new word rule
		WordRule wordRule= new WordRule(new cseWordDetector(), variable);
		//add top and the rest of the key words to the wordrule
		wordRule.addWord(fgStart, container);
		for (int i= 0; i < fgKeyword.length; i++) {
			wordRule.addWord(fgKeyword[i], keyword);
		}
		wordRule.addWord(fgOther, keyword);
		rules.add(wordRule);
		//set the rules
		IRule[] result= new IRule[rules.size()];
		rules.toArray(result);
		setRules(result);
	}
}