1 /* 2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.xml.internal.rngom.digested; 27 28 29 30 /** 31 * @author Kohsuke Kawaguchi (kk@kohsuke.org) 32 */ 33 public class DPatternWalker implements DPatternVisitor<Void> { 34 public Void onAttribute(DAttributePattern p) { 35 return onXmlToken(p); 36 } 37 38 protected Void onXmlToken(DXmlTokenPattern p) { 39 return onUnary(p); 40 } 41 42 public Void onChoice(DChoicePattern p) { 43 return onContainer(p); 44 } 45 46 protected Void onContainer(DContainerPattern p) { 47 for( DPattern c=p.firstChild(); c!=null; c=c.next ) 48 c.accept(this); 49 return null; 50 } 51 52 public Void onData(DDataPattern p) { 53 return null; 54 } 55 56 public Void onElement(DElementPattern p) { 57 return onXmlToken(p); 58 } 59 60 public Void onEmpty(DEmptyPattern p) { 61 return null; 62 } 63 64 public Void onGrammar(DGrammarPattern p) { 65 return p.getStart().accept(this); 66 } 67 68 public Void onGroup(DGroupPattern p) { 69 return onContainer(p); 70 } 71 72 public Void onInterleave(DInterleavePattern p) { 73 return onContainer(p); 74 } 75 76 public Void onList(DListPattern p) { 77 return onUnary(p); 78 } 79 80 public Void onMixed(DMixedPattern p) { 81 return onUnary(p); 82 } 83 84 public Void onNotAllowed(DNotAllowedPattern p) { 85 return null; 86 } 87 88 public Void onOneOrMore(DOneOrMorePattern p) { 89 return onUnary(p); 90 } 91 92 public Void onOptional(DOptionalPattern p) { 93 return onUnary(p); 94 } 95 96 public Void onRef(DRefPattern p) { 97 return p.getTarget().getPattern().accept(this); 98 } 99 100 public Void onText(DTextPattern p) { 101 return null; 102 } 103 104 public Void onValue(DValuePattern p) { 105 return null; 106 } 107 108 public Void onZeroOrMore(DZeroOrMorePattern p) { 109 return onUnary(p); 110 } 111 112 protected Void onUnary(DUnaryPattern p) { 113 return p.getChild().accept(this); 114 } 115 }