1/*
2 * Copyright (C) 2011, 2012 University of Washington. All rights reserved.
3 * Copyright (C) 2014 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
16 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
18 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef NondeterministicInput_h
29#define NondeterministicInput_h
30
31#if ENABLE(WEB_REPLAY)
32
33#include <wtf/Forward.h>
34#include <wtf/Noncopyable.h>
35
36namespace JSC {
37
38class EncodedValue;
39
40enum class InputQueue {
41    ScriptMemoizedData = 0,
42    LoaderMemoizedData = 1,
43    EventLoopInput = 2,
44    Count = 3
45};
46
47template<typename InputType>
48struct JS_EXPORT_PRIVATE InputTraits {
49    static InputQueue queue();
50    static AtomicString& type();
51
52    static void encode(EncodedValue& encodedInput, InputType& decodedInput);
53    static bool decode(EncodedValue& encodedInput, std::unique_ptr<InputType>& decodedInput);
54};
55
56class NondeterministicInputBase {
57    WTF_MAKE_NONCOPYABLE(NondeterministicInputBase);
58public:
59    NondeterministicInputBase() { }
60    virtual ~NondeterministicInputBase() { }
61
62    virtual const AtomicString& type() const = 0;
63    virtual InputQueue queue() const = 0;
64};
65
66template<typename InputType>
67class NondeterministicInput : public NondeterministicInputBase {
68    virtual const AtomicString& type() const override
69    {
70        return InputTraits<InputType>::type();
71    }
72
73    virtual InputQueue queue() const override
74    {
75        return InputTraits<InputType>::queue();
76    }
77};
78
79} // namespace JSC
80
81using JSC::InputQueue;
82using JSC::InputTraits;
83using JSC::NondeterministicInput;
84using JSC::NondeterministicInputBase;
85
86#endif // ENABLE(WEB_REPLAY)
87
88#endif // NondeterministicInput_h
89