1/*
2 * Copyright (C) 2013 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#ifndef FTLTypedPointer_h
27#define FTLTypedPointer_h
28
29#if ENABLE(FTL_JIT)
30
31#include "FTLAbbreviations.h"
32#include "FTLAbstractHeap.h"
33
34namespace JSC { namespace FTL {
35
36class TypedPointer {
37public:
38    TypedPointer()
39        : m_heap(0)
40        , m_value(0)
41    {
42    }
43
44    TypedPointer(const AbstractHeap& heap, LValue value)
45        : m_heap(&heap)
46        , m_value(value)
47    {
48    }
49
50    bool operator!() const
51    {
52        ASSERT(!m_heap == !m_value);
53        return !m_heap;
54    }
55
56    const AbstractHeap& heap() const { return *m_heap; }
57    LValue value() const { return m_value; }
58
59private:
60    const AbstractHeap* m_heap;
61    LValue m_value;
62};
63
64} } // namespace JSC::FTL
65
66#endif // ENABLE(FTL_JIT)
67
68#endif // FTLTypedPointer_h
69
70