runtime/StructureRareData.cpp

   1 /*
   2  * Copyright (C) 2013 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. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "StructureRareData.h"
  28
  29 #include "JSString.h"
  30 #include "Operations.h"
  31
  32 namespace JSC {
  33
  34 const ClassInfo StructureRareData::s_info = { "StructureRareData", 0, 0, 0, CREATE_METHOD_TABLE(StructureRareData) };
  35
  36 Structure* StructureRareData::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
  37 {
  38     return Structure::create(vm, globalObject, prototype, TypeInfo(CompoundType, StructureFlags), &s_info);
  39 }
  40
  41 StructureRareData* StructureRareData::create(VM& vm, Structure* previous)
  42 {
  43     StructureRareData* rareData = new (NotNull, allocateCell<StructureRareData>(vm.heap)) StructureRareData(vm, previous);
  44     rareData->finishCreation(vm);
  45     return rareData;
  46 }
  47
  48 StructureRareData* StructureRareData::clone(VM& vm, const StructureRareData* other)
  49 {
  50     StructureRareData* newRareData = new (NotNull, allocateCell<StructureRareData>(vm.heap)) StructureRareData(vm, other);
  51     newRareData->finishCreation(vm);
  52     return newRareData;
  53 }
  54
  55 StructureRareData::StructureRareData(VM& vm, Structure* previous)
  56     : JSCell(vm, vm.structureRareDataStructure.get())
  57 {
  58     if (previous)
  59         m_previous.set(vm, this, previous);
  60 }
  61
  62 StructureRareData::StructureRareData(VM& vm, const StructureRareData* other)
  63     : JSCell(vm, other->structure())
  64 {
  65     if (other->previousID())
  66         m_previous.set(vm, this, other->previousID());
  67     if (other->objectToStringValue())
  68         m_objectToStringValue.set(vm, this, other->objectToStringValue());
  69 }
  70
  71 void StructureRareData::visitChildren(JSCell* cell, SlotVisitor& visitor)
  72 {
  73     StructureRareData* thisObject = jsCast<StructureRareData*>(cell);
  74     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
  75     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  76
  77     JSCell::visitChildren(thisObject, visitor);
  78     visitor.append(&thisObject->m_previous);
  79     visitor.append(&thisObject->m_objectToStringValue);
  80     visitor.append(&thisObject->m_enumerationCache);
  81 }
  82
  83 } // namespace JSC