| /* |
| * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| package com.sun.xml.internal.rngom.digested; |
| |
| |
| |
| /** |
| * @author Kohsuke Kawaguchi (kk@kohsuke.org) |
| */ |
| public class DPatternWalker implements DPatternVisitor<Void> { |
| public Void onAttribute(DAttributePattern p) { |
| return onXmlToken(p); |
| } |
| |
| protected Void onXmlToken(DXmlTokenPattern p) { |
| return onUnary(p); |
| } |
| |
| public Void onChoice(DChoicePattern p) { |
| return onContainer(p); |
| } |
| |
| protected Void onContainer(DContainerPattern p) { |
| for( DPattern c=p.firstChild(); c!=null; c=c.next ) |
| c.accept(this); |
| return null; |
| } |
| |
| public Void onData(DDataPattern p) { |
| return null; |
| } |
| |
| public Void onElement(DElementPattern p) { |
| return onXmlToken(p); |
| } |
| |
| public Void onEmpty(DEmptyPattern p) { |
| return null; |
| } |
| |
| public Void onGrammar(DGrammarPattern p) { |
| return p.getStart().accept(this); |
| } |
| |
| public Void onGroup(DGroupPattern p) { |
| return onContainer(p); |
| } |
| |
| public Void onInterleave(DInterleavePattern p) { |
| return onContainer(p); |
| } |
| |
| public Void onList(DListPattern p) { |
| return onUnary(p); |
| } |
| |
| public Void onMixed(DMixedPattern p) { |
| return onUnary(p); |
| } |
| |
| public Void onNotAllowed(DNotAllowedPattern p) { |
| return null; |
| } |
| |
| public Void onOneOrMore(DOneOrMorePattern p) { |
| return onUnary(p); |
| } |
| |
| public Void onOptional(DOptionalPattern p) { |
| return onUnary(p); |
| } |
| |
| public Void onRef(DRefPattern p) { |
| return p.getTarget().getPattern().accept(this); |
| } |
| |
| public Void onText(DTextPattern p) { |
| return null; |
| } |
| |
| public Void onValue(DValuePattern p) { |
| return null; |
| } |
| |
| public Void onZeroOrMore(DZeroOrMorePattern p) { |
| return onUnary(p); |
| } |
| |
| protected Void onUnary(DUnaryPattern p) { |
| return p.getChild().accept(this); |
| } |
| } |