replay/NondeterministicInput.h

   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
  36 namespace JSC {
  37
  38 class EncodedValue;
  39
  40 enum class InputQueue {
  41     ScriptMemoizedData = 0,
  42     LoaderMemoizedData = 1,
  43     EventLoopInput = 2,
  44     Count = 3
  45 };
  46
  47 template<typename InputType>
  48 struct 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
  56 class NondeterministicInputBase {
  57     WTF_MAKE_NONCOPYABLE(NondeterministicInputBase);
  58 public:
  59     NondeterministicInputBase() { }
  60     virtual ~NondeterministicInputBase() { }
  61
  62     virtual const AtomicString& type() const = 0;
  63     virtual InputQueue queue() const = 0;
  64 };
  65
  66 template<typename InputType>
  67 class 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
  81 using JSC::InputQueue;
  82 using JSC::InputTraits;
  83 using JSC::NondeterministicInput;
  84 using JSC::NondeterministicInputBase;
  85
  86 #endif // ENABLE(WEB_REPLAY)
  87
  88 #endif // NondeterministicInput_h