ruleendelement.java

来自「SRI international 发布的OAA框架软件」· Java 代码 · 共 32 行

package antlr_oaa;

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/RIGHTS.html
 *
 * $Id: RuleEndElement.java,v 1.1 2002/11/08 17:37:46 agno Exp $
 */

/**Contains a list of all places that reference
 * this enclosing rule.  Useful for FOLLOW computations.
 */
class RuleEndElement extends BlockEndElement {
	protected Lookahead[] cache;	// Each rule can cache it's lookahead computation.
					// The FOLLOW(rule) is stored in this cache.
					// 1..k
	protected boolean noFOLLOW;


	public RuleEndElement(Grammar g) {
		super(g);
		cache = new Lookahead[g.maxk+1];
	}
	public Lookahead look(int k) {
		return grammar.theLLkAnalyzer.look(k, this);
	}
	public String toString() {
		//return " [RuleEnd]";
		return "";
	}
}