01: /*
02: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.tools.internal.xjc.reader.dtd;
27:
28: import java.util.List;
29:
30: import com.sun.xml.internal.dtdparser.DTDEventListener;
31:
32: /**
33: * @author Kohsuke Kawaguchi
34: */
35: final class Occurence extends Term {
36: final Term term;
37: final boolean isOptional;
38: final boolean isRepeated;
39:
40: Occurence(Term term, boolean optional, boolean repeated) {
41: this .term = term;
42: isOptional = optional;
43: isRepeated = repeated;
44: }
45:
46: static Term wrap(Term t, int occurence) {
47: switch (occurence) {
48: case DTDEventListener.OCCURENCE_ONCE:
49: return t;
50: case DTDEventListener.OCCURENCE_ONE_OR_MORE:
51: return new Occurence(t, false, true);
52: case DTDEventListener.OCCURENCE_ZERO_OR_MORE:
53: return new Occurence(t, true, true);
54: case DTDEventListener.OCCURENCE_ZERO_OR_ONE:
55: return new Occurence(t, true, false);
56: default:
57: throw new IllegalArgumentException();
58: }
59: }
60:
61: void normalize(List<Block> r, boolean optional) {
62: if (isRepeated) {
63: Block b = new Block(isOptional || optional, true);
64: addAllElements(b);
65: r.add(b);
66: } else {
67: term.normalize(r, optional || isOptional);
68: }
69: }
70:
71: void addAllElements(Block b) {
72: term.addAllElements(b);
73: }
74:
75: boolean isOptional() {
76: return isOptional || term.isOptional();
77: }
78:
79: boolean isRepeated() {
80: return isRepeated || term.isRepeated();
81: }
82: }
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