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.gbind;
27:
28: /**
29: * {@link Expression} that represents kleene-star operation (A+)
30: *
31: * @author Kohsuke Kawaguchi
32: */
33: public final class OneOrMore extends Expression {
34: /**
35: * 'A' of 'A+'.
36: */
37: private final Expression child;
38:
39: public OneOrMore(Expression child) {
40: this .child = child;
41: }
42:
43: ElementSet lastSet() {
44: return child.lastSet();
45: }
46:
47: boolean isNullable() {
48: return child.isNullable();
49: }
50:
51: void buildDAG(ElementSet incoming) {
52: child.buildDAG(ElementSets.union(incoming, child.lastSet()));
53: }
54:
55: public String toString() {
56: return child.toString() + '+';
57: }
58: }
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