bytecode/SpecialPointer.h

   1 /*
   2  * Copyright (C) 2012 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 SpecialPointer_h
  27 #define SpecialPointer_h
  28
  29 namespace JSC {
  30
  31 class CodeBlock;
  32 class JSGlobalObject;
  33
  34 namespace Special {
  35 enum Pointer {
  36     CallFunction,
  37     ApplyFunction,
  38     ObjectConstructor,
  39     ArrayConstructor,
  40     TableSize // Not a real special pointer. Use this to determine the number of pointers.
  41 };
  42 } // namespace Special
  43
  44 inline bool pointerIsFunction(Special::Pointer pointer)
  45 {
  46     ASSERT_UNUSED(pointer, pointer < Special::TableSize);
  47     return true;
  48 }
  49
  50 inline bool pointerIsCell(Special::Pointer pointer)
  51 {
  52     ASSERT_UNUSED(pointer, pointer < Special::TableSize);
  53     return true;
  54 }
  55
  56 void* actualPointerFor(JSGlobalObject*, Special::Pointer);
  57 void* actualPointerFor(CodeBlock*, Special::Pointer);
  58
  59 } // namespace JSC
  60
  61 #endif // SpecialPointer_h
  62