dfg/DFGDesiredIdentifiers.h

   1 /*
   2  * Copyright (C) 2013, 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  * 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 DFGDesiredIdentifiers_h
  27 #define DFGDesiredIdentifiers_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "Identifier.h"
  32
  33 namespace JSC {
  34
  35 class CodeBlock;
  36
  37 namespace DFG {
  38
  39 class CommonData;
  40
  41 class DesiredIdentifiers {
  42 public:
  43     DesiredIdentifiers();
  44     DesiredIdentifiers(CodeBlock*);
  45     ~DesiredIdentifiers();
  46
  47     unsigned numberOfIdentifiers();
  48     void addLazily(StringImpl*);
  49
  50     StringImpl* at(unsigned index) const;
  51
  52     StringImpl* operator[](unsigned index) const { return at(index); }
  53
  54     void reallyAdd(VM&, CommonData*);
  55
  56 private:
  57     CodeBlock* m_codeBlock;
  58     Vector<StringImpl*> m_addedIdentifiers;
  59 };
  60
  61 } } // namespace JSC::DFG
  62
  63 #endif // ENABLE(DFG_JIT)
  64
  65 #endif // DFGDesiredIdentifiers_h
  66