| /* |
| * 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.tools.internal.xjc.reader.dtd; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import com.sun.xml.internal.dtdparser.DTDEventListener; |
| |
| |
| /** |
| * @author Kohsuke Kawaguchi |
| */ |
| final class ModelGroup extends Term { |
| enum Kind { |
| CHOICE, SEQUENCE |
| } |
| |
| Kind kind; |
| |
| private final List<Term> terms = new ArrayList<Term>(); |
| |
| void normalize(List<Block> r, boolean optional) { |
| switch(kind) { |
| case SEQUENCE: |
| for( Term t : terms ) |
| t.normalize(r,optional); |
| return; |
| case CHOICE: |
| Block b = new Block(isOptional()||optional,isRepeated()); |
| addAllElements(b); |
| r.add(b); |
| return; |
| } |
| } |
| |
| void addAllElements(Block b) { |
| for( Term t : terms ) |
| t.addAllElements(b); |
| } |
| |
| boolean isOptional() { |
| switch(kind) { |
| case SEQUENCE: |
| for( Term t : terms ) |
| if(!t.isOptional()) |
| return false; |
| return true; |
| case CHOICE: |
| for( Term t : terms ) |
| if(t.isOptional()) |
| return true; |
| return false; |
| default: |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| boolean isRepeated() { |
| switch(kind) { |
| case SEQUENCE: |
| return true; |
| case CHOICE: |
| for( Term t : terms ) |
| if(t.isRepeated()) |
| return true; |
| return false; |
| default: |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| void setKind(short connectorType) { |
| Kind k; |
| switch(connectorType) { |
| case DTDEventListener.SEQUENCE: |
| k = Kind.SEQUENCE; |
| break; |
| case DTDEventListener.CHOICE: |
| k = Kind.CHOICE; |
| break; |
| default: |
| throw new IllegalArgumentException(); |
| } |
| |
| assert kind==null || k==kind; |
| kind = k; |
| } |
| |
| void addTerm(Term t) { |
| if (t instanceof ModelGroup) { |
| ModelGroup mg = (ModelGroup) t; |
| if(mg.kind==this.kind) { |
| terms.addAll(mg.terms); |
| return; |
| } |
| } |
| terms.add(t); |
| } |
| |
| |
| Term wrapUp() { |
| switch(terms.size()) { |
| case 0: |
| return EMPTY; |
| case 1: |
| assert kind==null; |
| return terms.get(0); |
| default: |
| assert kind!=null; |
| return this; |
| } |
| } |
| |
| } |