1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(DFG_JIT)
29
30#include "Structure.h"
31
32namespace JSC { namespace DFG {
33
34class Graph;
35
36class RegisteredStructure {
37public:
38 RegisteredStructure() = default;
39
40 ALWAYS_INLINE Structure* get() const { return m_structure; }
41 Structure* operator->() const { return get(); }
42
43 bool operator==(const RegisteredStructure& other) const
44 {
45 return get() == other.get();
46 }
47
48 bool operator!=(const RegisteredStructure& other) const
49 {
50 return !(*this == other);
51 }
52
53 explicit operator bool() const
54 {
55 return !!get();
56 }
57
58private:
59 friend class Graph;
60
61 RegisteredStructure(Structure* structure)
62 : m_structure(structure)
63 {
64 ASSERT(structure);
65 }
66
67 static RegisteredStructure createPrivate(Structure* structure)
68 {
69 return RegisteredStructure(structure);
70 }
71
72 Structure* m_structure { nullptr };
73};
74
75} } // namespace JSC::DFG
76
77#endif // ENABLE(DFG_JIT)
78