| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| * @author Morten Jorgensen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.xalan.xsltc.compiler.util.*; |
| |
| public abstract class LocationPathPattern extends Pattern { |
| private Template _template; |
| private int _importPrecedence; |
| private double _priority = Double.NaN; |
| private int _position = 0; |
| |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| return Type.Void; // TODO |
| } |
| |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| // TODO: What does it mean to translate a Pattern ? |
| } |
| |
| public void setTemplate(final Template template) { |
| _template = template; |
| _priority = template.getPriority(); |
| _importPrecedence = template.getImportPrecedence(); |
| _position = template.getPosition(); |
| } |
| |
| public Template getTemplate() { |
| return _template; |
| } |
| |
| public final double getPriority() { |
| return Double.isNaN(_priority) ? getDefaultPriority() : _priority; |
| } |
| |
| public double getDefaultPriority() { |
| return 0.5; |
| } |
| |
| /** |
| * This method is used by the Mode class to prioritise patterns and |
| * template. This method is called for templates that are in the same |
| * mode and that match on the same core pattern. The rules used are: |
| * o) first check precedence - highest precedence wins |
| * o) then check priority - highest priority wins |
| * o) then check the position - the template that occured last wins |
| */ |
| public boolean noSmallerThan(LocationPathPattern other) { |
| if (_importPrecedence > other._importPrecedence) { |
| return true; |
| } |
| else if (_importPrecedence == other._importPrecedence) { |
| if (_priority > other._priority) { |
| return true; |
| } |
| else if (_priority == other._priority) { |
| if (_position > other._position) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** return last pattern (matching the current node) */ |
| public abstract StepPattern getKernelPattern(); |
| |
| public abstract void reduceKernelPattern(); |
| |
| public abstract boolean isWildcard(); |
| |
| public String toString() { |
| return "root()"; |
| } |
| } |