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 "JSPropertyNameIterator.h"
  30 #include "JSString.h"
  31 #include "JSCInlines.h"
  32
  33 namespace JSC {
  34
  35 const ClassInfo StructureRareData::s_info = { "StructureRareData", 0, 0, 0, CREATE_METHOD_TABLE(StructureRareData) };
  36
  37 Structure* StructureRareData::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
  38 {
  39     return Structure::create(vm, globalObject, prototype, TypeInfo(CompoundType, StructureFlags), info());
  40 }
  41
  42 StructureRareData* StructureRareData::create(VM& vm, Structure* previous)
  43 {
  44     StructureRareData* rareData = new (NotNull, allocateCell<StructureRareData>(vm.heap)) StructureRareData(vm, previous);
  45     rareData->finishCreation(vm);
  46     return rareData;
  47 }
  48
  49 StructureRareData* StructureRareData::clone(VM& vm, const StructureRareData* other)
  50 {
  51     StructureRareData* newRareData = new (NotNull, allocateCell<StructureRareData>(vm.heap)) StructureRareData(vm, other);
  52     newRareData->finishCreation(vm);
  53     return newRareData;
  54 }
  55
  56 StructureRareData::StructureRareData(VM& vm, Structure* previous)
  57     : JSCell(vm, vm.structureRareDataStructure.get())
  58 {
  59     if (previous)
  60         m_previous.set(vm, this, previous);
  61 }
  62
  63 StructureRareData::StructureRareData(VM& vm, const StructureRareData* other)
  64     : JSCell(vm, other->structure())
  65 {
  66     if (other->previousID())
  67         m_previous.set(vm, this, other->previousID());
  68     if (other->objectToStringValue())
  69         m_objectToStringValue.set(vm, this, other->objectToStringValue());
  70 }
  71
  72 void StructureRareData::visitChildren(JSCell* cell, SlotVisitor& visitor)
  73 {
  74     StructureRareData* thisObject = jsCast<StructureRareData*>(cell);
  75     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
  76     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  77
  78     JSCell::visitChildren(thisObject, visitor);
  79     visitor.append(&thisObject->m_previous);
  80     visitor.append(&thisObject->m_objectToStringValue);
  81     visitor.append(&thisObject->m_enumerationCache);
  82 }
  83
  84 } // namespace JSC