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 FTLExitArgument_h
27#define FTLExitArgument_h
28
29#if ENABLE(FTL_JIT)
30
31#include "FTLValueFormat.h"
32#include <wtf/PrintStream.h>
33
34namespace JSC { namespace FTL {
35
36struct ExitArgumentRepresentation {
37    ValueFormat format;
38    unsigned argument;
39};
40
41class ExitArgument {
42public:
43    ExitArgument()
44    {
45        m_representation.format = InvalidValueFormat;
46    }
47
48    ExitArgument(ValueFormat format, unsigned argument)
49    {
50        m_representation.format = format;
51        m_representation.argument = argument;
52    }
53
54    explicit ExitArgument(ExitArgumentRepresentation representation)
55    {
56        m_representation = representation;
57    }
58
59    bool operator!() const { return m_representation.format == InvalidValueFormat; }
60
61    ValueFormat format() const
62    {
63        ASSERT(*this);
64        return m_representation.format;
65    }
66
67    unsigned argument() const
68    {
69        ASSERT(*this);
70        return m_representation.argument;
71    }
72
73    ExitArgument withFormat(ValueFormat format)
74    {
75        return ExitArgument(format, argument());
76    }
77
78    ExitArgumentRepresentation representation() const { return m_representation; }
79
80    void dump(PrintStream&) const;
81
82private:
83    ExitArgumentRepresentation m_representation;
84};
85
86} } // namespace JSC::FTL
87
88#endif // ENABLE(FTL_JIT)
89
90#endif // FTLExitArgument_h
91
92