ASTEnumerator.java
上传用户:afrynkmhm
上传日期:2007-01-06
资源大小:1262k
文件大小:1k
- package antlr.collections.impl;
- /* ANTLR Translator Generator
- * Project led by Terence Parr at http://www.jGuru.com
- * Software rights: http://www.antlr.org/RIGHTS.html
- *
- * $Id: //depot/code/org.antlr/release/antlr-2.7.0/antlr/collections/impl/ASTEnumerator.java#1 $
- */
- import antlr.collections.impl.Vector;
- import antlr.collections.ASTEnumeration;
- import antlr.collections.AST;
- import java.util.NoSuchElementException;
- public class ASTEnumerator implements antlr.collections.ASTEnumeration {
- /** The list of root nodes for subtrees that match */
- VectorEnumerator nodes;
- int i = 0;
- public ASTEnumerator(Vector v) {
- nodes = new VectorEnumerator(v);
- }
- public boolean hasMoreNodes() {
- synchronized (nodes) {
- return i <= nodes.vector.lastElement;
- }
- }
- public antlr.collections.AST nextNode() {
- synchronized (nodes) {
- if (i <= nodes.vector.lastElement) {
- return (AST)nodes.vector.data[i++];
- }
- throw new NoSuchElementException("ASTEnumerator");
- }
- }
- }