| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id$ |
| */ |
| |
| package org.apache.xalan.xsltc.dom; |
| |
| import org.apache.xalan.xsltc.DOM; |
| import org.apache.xalan.xsltc.Translet; |
| import org.apache.xalan.xsltc.util.IntegerArray; |
| import org.apache.xml.dtm.DTMAxisIterator; |
| import org.apache.xml.dtm.Axis; |
| |
| /** |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| */ |
| public abstract class MultipleNodeCounter extends NodeCounter { |
| private DTMAxisIterator _precSiblings = null; |
| |
| public MultipleNodeCounter(Translet translet, |
| DOM document, DTMAxisIterator iterator) { |
| super(translet, document, iterator); |
| } |
| |
| public NodeCounter setStartNode(int node) { |
| _node = node; |
| _nodeType = _document.getExpandedTypeID(node); |
| _precSiblings = _document.getAxisIterator(Axis.PRECEDINGSIBLING); |
| return this; |
| } |
| |
| public String getCounter() { |
| if (_value != Integer.MIN_VALUE) { |
| //See Errata E24 |
| if (_value == 0) return "0"; |
| else if (Double.isNaN(_value)) return "NaN"; |
| else if (_value < 0 && Double.isInfinite(_value)) return "-Infinity"; |
| else if (Double.isInfinite(_value)) return "Infinity"; |
| else return formatNumbers((int)_value); |
| } |
| |
| IntegerArray ancestors = new IntegerArray(); |
| |
| // Gather all ancestors that do not match from pattern |
| int next = _node; |
| ancestors.add(next); // include self |
| while ((next = _document.getParent(next)) > END && |
| !matchesFrom(next)) { |
| ancestors.add(next); |
| } |
| |
| // Create an array of counters |
| final int nAncestors = ancestors.cardinality(); |
| final int[] counters = new int[nAncestors]; |
| for (int i = 0; i < nAncestors; i++) { |
| counters[i] = Integer.MIN_VALUE; |
| } |
| |
| // Increment array of counters according to semantics |
| for (int j = 0, i = nAncestors - 1; i >= 0 ; i--, j++) { |
| final int counter = counters[j]; |
| final int ancestor = ancestors.at(i); |
| |
| if (matchesCount(ancestor)) { |
| _precSiblings.setStartNode(ancestor); |
| while ((next = _precSiblings.next()) != END) { |
| if (matchesCount(next)) { |
| counters[j] = (counters[j] == Integer.MIN_VALUE) ? 1 |
| : counters[j] + 1; |
| } |
| } |
| // Count the node itself |
| counters[j] = counters[j] == Integer.MIN_VALUE |
| ? 1 |
| : counters[j] + 1; |
| } |
| } |
| return formatNumbers(counters); |
| } |
| |
| public static NodeCounter getDefaultNodeCounter(Translet translet, |
| DOM document, |
| DTMAxisIterator iterator) { |
| return new DefaultMultipleNodeCounter(translet, document, iterator); |
| } |
| |
| static class DefaultMultipleNodeCounter extends MultipleNodeCounter { |
| public DefaultMultipleNodeCounter(Translet translet, |
| DOM document, |
| DTMAxisIterator iterator) { |
| super(translet, document, iterator); |
| } |
| } |
| } |