bytecode/StructureSet.h

   1 /*
   2  * Copyright (C) 2011, 2013-2015 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 StructureSet_h
  27 #define StructureSet_h
  28
  29 #include "ArrayProfile.h"
  30 #include "DumpContext.h"
  31 #include "SpeculatedType.h"
  32 #include "Structure.h"
  33 #include <wtf/TinyPtrSet.h>
  34
  35 namespace JSC {
  36
  37 class TrackedReferences;
  38
  39 namespace DFG {
  40 class StructureAbstractValue;
  41 struct AbstractValue;
  42 }
  43
  44 class StructureSet : public TinyPtrSet<Structure*> {
  45 public:
  46     // I really want to do this:
  47     // using TinyPtrSet::TinyPtrSet;
  48     //
  49     // But I can't because Windows.
  50
  51     StructureSet()
  52     {
  53     }
  54
  55     StructureSet(Structure* structure)
  56         : TinyPtrSet(structure)
  57     {
  58     }
  59
  60     ALWAYS_INLINE StructureSet(const StructureSet& other)
  61         : TinyPtrSet(other)
  62     {
  63     }
  64
  65     Structure* onlyStructure() const
  66     {
  67         return onlyEntry();
  68     }
  69
  70 #if ENABLE(DFG_JIT)
  71     void filter(const DFG::StructureAbstractValue&);
  72     void filter(SpeculatedType);
  73     void filterArrayModes(ArrayModes);
  74     void filter(const DFG::AbstractValue&);
  75 #endif // ENABLE(DFG_JIT)
  76
  77     SpeculatedType speculationFromStructures() const;
  78     ArrayModes arrayModesFromStructures() const;
  79
  80     void dumpInContext(PrintStream&, DumpContext*) const;
  81     void dump(PrintStream&) const;
  82
  83     void validateReferences(const TrackedReferences&) const;
  84 };
  85
  86 } // namespace JSC
  87
  88 #endif // StructureSet_h