runtime/JSMapIterator.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. ``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 #include "config.h"
  27 #include "JSMapIterator.h"
  28
  29 #include "JSCJSValueInlines.h"
  30 #include "JSCellInlines.h"
  31 #include "JSMap.h"
  32 #include "SlotVisitorInlines.h"
  33 #include "StructureInlines.h"
  34
  35 namespace JSC {
  36
  37 const ClassInfo JSMapIterator::s_info = { "Map Iterator", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSMapIterator) };
  38
  39 void JSMapIterator::finishCreation(VM& vm, JSMap* iteratedObject)
  40 {
  41     Base::finishCreation(vm);
  42     m_iteratedObjectData.set(vm, this, iteratedObject->mapData());
  43 }
  44
  45 void JSMapIterator::visitChildren(JSCell* cell, SlotVisitor& visitor)
  46 {
  47     JSMapIterator* thisObject = jsCast<JSMapIterator*>(cell);
  48     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
  49     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
  50     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  51
  52     Base::visitChildren(thisObject, visitor);
  53     visitor.append(&thisObject->m_iteratedObjectData);
  54 }
  55
  56 JSValue JSMapIterator::createPair(CallFrame* callFrame, JSValue key, JSValue value)
  57 {
  58     MarkedArgumentBuffer args;
  59     args.append(key);
  60     args.append(value);
  61     JSGlobalObject* globalObject = callFrame->callee()->globalObject();
  62     return constructArray(callFrame, 0, globalObject, args);
  63 }
  64
  65 }