blockendelement.java

来自「SRI international 发布的OAA框架软件」· Java 代码 · 共 30 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: BlockEndElement.java,v 1.1 2002/11/08 17:38:19 agno Exp $
 */

/**All alternative blocks are "terminated" by BlockEndElements unless
 * they are rule blocks (in which case they use RuleEndElement).
 */
class BlockEndElement extends AlternativeElement {
	protected boolean[] lock;	// for analysis; used to avoid infinite loops
	protected AlternativeBlock block;// ending blocks know what block they terminate


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