rulereturnscope.java

antlr最新版本V3源代码

package org.antlr.runtime;

/** Rules can return start/stop info as well as possible trees and templates */
public class RuleReturnScope {
	/** Return the start token or tree */
	public Object getStart() { return null; }
	/** Return the stop token or tree */
	public Object getStop() { return null; }
	/** Has a value potentially if output=AST; */
	public Object getTree() { return null; }
	/** Has a value potentially if output=template; Don't use StringTemplate
	 *  type as it then causes a dependency with ST lib.
	 */
	public Object getTemplate() { return null; }
}