myrulescanner.java

这是用SWT写的一个自定义编辑器的一个小离子

package edit4.Myedit;

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.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;

public class MyRuleScanner extends RuleBasedScanner {
	private static Color TAG_COLOR= new Color(Display.getCurrent(), new RGB(255, 0, 0));
	private static Color COMMENT_COLOR= new Color(Display.getCurrent(), new RGB(0, 255, 0));

	public MyRuleScanner() {
		IToken tagToken =
			new Token(
				new TextAttribute(TAG_COLOR));

		IToken commentToken= new Token(new TextAttribute(COMMENT_COLOR));

		IRule[] rules = new IRule[2];
		//Add rule for processing instructions
		rules[0] = new SingleLineRule("<Line1", "Line1>", tagToken);
		rules[1] = (new EndOfLineRule("//", commentToken)); //$NON-NLS-1$
		setRules(rules);
	}
}