01: /*
02: * Copyright (c) 2007, intarsys consulting GmbH
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * - Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * - Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * - Neither the name of intarsys nor the names of its contributors may be used
15: * to endorse or promote products derived from this software without specific
16: * prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28: * POSSIBILITY OF SUCH DAMAGE.
29: */
30: package de.intarsys.pdf.cos;
31:
32: /**
33: * Abstract class for the representation of boolean values
34: */
35: abstract public class COSBoolean extends COSPrimitiveObject {
36:
37: public static final COSBoolean TRUE = (COSBoolean) COSBoolean
38: .create(true).beConstant();
39:
40: public static final COSBoolean FALSE = (COSBoolean) COSBoolean
41: .create(false).beConstant();
42:
43: protected COSBoolean() {
44: super ();
45: }
46:
47: protected COSBoolean(COSObject object) {
48: super (object);
49: }
50:
51: static public COSBoolean create(boolean value) {
52: if (value) {
53: return COSTrue.create();
54: }
55: return COSFalse.create();
56: }
57:
58: /*
59: * (non-Javadoc)
60: *
61: * @see de.intarsys.pdf.cos.COSObject#accept(de.intarsys.pdf.cos.ICOSObjectVisitor)
62: */
63: public java.lang.Object accept(ICOSObjectVisitor visitor)
64: throws COSVisitorException {
65: return visitor.visitFromBoolean(this );
66: }
67:
68: /**
69: * The boolean value for this.
70: *
71: * @return The boolean value for this.
72: */
73: abstract public boolean booleanValue();
74:
75: /*
76: * (non-Javadoc)
77: *
78: * @see de.intarsys.pdf.cos.COSObject#asBoolean()
79: */
80: public COSBoolean asBoolean() {
81: return this;
82: }
83: }
|