replay/EmptyInputCursor.h

   1 /*
   2  * Copyright (C) 2014 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  *
   8  * 1.  Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  15  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  16  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  17  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  18  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  19  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  20  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef EmptyInputCursor_h
  28 #define EmptyInputCursor_h
  29
  30 #if ENABLE(WEB_REPLAY)
  31
  32 #include "InputCursor.h"
  33 #include <wtf/Assertions.h>
  34 #include <wtf/Noncopyable.h>
  35
  36 namespace JSC {
  37
  38 class EmptyInputCursor final : public InputCursor {
  39     WTF_MAKE_NONCOPYABLE(EmptyInputCursor);
  40 public:
  41     virtual ~EmptyInputCursor() { }
  42
  43     static PassRefPtr<EmptyInputCursor> create()
  44     {
  45         return adoptRef(new EmptyInputCursor());
  46     }
  47
  48     virtual bool isCapturing() const override { return false; }
  49     virtual bool isReplaying() const override { return false; }
  50
  51     virtual NondeterministicInputBase* uncheckedLoadInput(InputQueue) override
  52     {
  53         ASSERT_NOT_REACHED();
  54         return nullptr;
  55     }
  56
  57     virtual void storeInput(std::unique_ptr<NondeterministicInputBase>) override
  58     {
  59         ASSERT_NOT_REACHED();
  60     }
  61
  62 protected:
  63     virtual NondeterministicInputBase* loadInput(InputQueue, const AtomicString&) override
  64     {
  65         ASSERT_NOT_REACHED();
  66         return nullptr;
  67     }
  68
  69 private:
  70     EmptyInputCursor() { }
  71 };
  72
  73 } // namespace JSC
  74
  75 using JSC::EmptyInputCursor;
  76
  77 #endif // ENABLE(WEB_REPLAY)
  78
  79 #endif // EmptyInputCursor_h