1 | /* |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* OSBoolean.cpp created by rsulack on Tue Oct 12 1999 */ |
29 | |
30 | #include <libkern/c++/OSBoolean.h> |
31 | #include <libkern/c++/OSString.h> |
32 | #include <libkern/c++/OSSerialize.h> |
33 | #include <libkern/c++/OSLib.h> |
34 | |
35 | #define super OSObject |
36 | |
37 | OSDefineMetaClassAndStructorsWithInit(OSBoolean, OSObject, OSBoolean::initialize()) |
38 | OSMetaClassDefineReservedUnused(OSBoolean, 0); |
39 | OSMetaClassDefineReservedUnused(OSBoolean, 1); |
40 | OSMetaClassDefineReservedUnused(OSBoolean, 2); |
41 | OSMetaClassDefineReservedUnused(OSBoolean, 3); |
42 | OSMetaClassDefineReservedUnused(OSBoolean, 4); |
43 | OSMetaClassDefineReservedUnused(OSBoolean, 5); |
44 | OSMetaClassDefineReservedUnused(OSBoolean, 6); |
45 | OSMetaClassDefineReservedUnused(OSBoolean, 7); |
46 | |
47 | static OSBoolean * gOSBooleanTrue = NULL; |
48 | static OSBoolean * gOSBooleanFalse = NULL; |
49 | |
50 | OSBoolean * const & kOSBooleanTrue = gOSBooleanTrue; |
51 | OSBoolean * const & kOSBooleanFalse = gOSBooleanFalse; |
52 | |
53 | void |
54 | OSBoolean::initialize() |
55 | { |
56 | gOSBooleanTrue = new OSBoolean; |
57 | assert(gOSBooleanTrue); |
58 | |
59 | if (!gOSBooleanTrue->init()) { |
60 | gOSBooleanTrue->OSObject::free(); |
61 | assert(false); |
62 | } |
63 | ; |
64 | gOSBooleanTrue->value = true; |
65 | |
66 | gOSBooleanFalse = new OSBoolean; |
67 | assert(gOSBooleanFalse); |
68 | |
69 | if (!gOSBooleanFalse->init()) { |
70 | gOSBooleanFalse->OSObject::free(); |
71 | assert(false); |
72 | } |
73 | ; |
74 | gOSBooleanFalse->value = false; |
75 | } |
76 | |
77 | void |
78 | OSBoolean::free() |
79 | { |
80 | /* |
81 | * An OSBoolean should never have free() called on it, since it is a shared |
82 | * object, with two non-mutable instances: kOSBooleanTrue, kOSBooleanFalse. |
83 | * There will be cases where an incorrect number of releases will cause the |
84 | * free() method to be called, however, which we must catch and ignore here. |
85 | */ |
86 | assert(false); |
87 | } |
88 | |
89 | void |
90 | OSBoolean::taggedRetain(__unused const void *tag) const |
91 | { |
92 | } |
93 | void |
94 | OSBoolean::taggedRelease(__unused const void *tag, __unused const int when) const |
95 | { |
96 | } |
97 | |
98 | OSBoolean * |
99 | OSBoolean::withBoolean(bool inValue) |
100 | { |
101 | return (inValue) ? kOSBooleanTrue : kOSBooleanFalse; |
102 | } |
103 | |
104 | bool |
105 | OSBoolean::isTrue() const |
106 | { |
107 | return value; |
108 | } |
109 | bool |
110 | OSBoolean::isFalse() const |
111 | { |
112 | return !value; |
113 | } |
114 | bool |
115 | OSBoolean::getValue() const |
116 | { |
117 | return value; |
118 | } |
119 | |
120 | bool |
121 | OSBoolean::isEqualTo(const OSBoolean *boolean) const |
122 | { |
123 | return boolean == this; |
124 | } |
125 | |
126 | bool |
127 | OSBoolean::isEqualTo(const OSMetaClassBase *obj) const |
128 | { |
129 | OSBoolean * boolean; |
130 | if ((boolean = OSDynamicCast(OSBoolean, obj))) { |
131 | return isEqualTo(boolean); |
132 | } else { |
133 | return false; |
134 | } |
135 | } |
136 | |
137 | bool |
138 | OSBoolean::serialize(OSSerialize *s) const |
139 | { |
140 | if (s->binary) { |
141 | return s->binarySerialize(o: this); |
142 | } |
143 | |
144 | return s->addString(cString: value ? "<true/>" : "<false/>" ); |
145 | } |
146 | |