runtime/WeakMapConstructor.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 "WeakMapConstructor.h"
  28
  29 #include "JSCJSValueInlines.h"
  30 #include "JSCellInlines.h"
  31 #include "JSGlobalObject.h"
  32 #include "JSWeakMap.h"
  33 #include "StructureInlines.h"
  34 #include "WeakMapPrototype.h"
  35
  36 namespace JSC {
  37
  38 const ClassInfo WeakMapConstructor::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(WeakMapConstructor) };
  39
  40 void WeakMapConstructor::finishCreation(VM& vm, WeakMapPrototype* prototype)
  41 {
  42     Base::finishCreation(vm, prototype->classInfo()->className);
  43     putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, DontEnum | DontDelete | ReadOnly);
  44     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), ReadOnly | DontEnum | DontDelete);
  45 }
  46
  47 static EncodedJSValue JSC_HOST_CALL constructWeakMap(ExecState* exec)
  48 {
  49     JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
  50     Structure* structure = globalObject->weakMapStructure();
  51     return JSValue::encode(JSWeakMap::create(exec, structure));
  52 }
  53
  54 ConstructType WeakMapConstructor::getConstructData(JSCell*, ConstructData& constructData)
  55 {
  56     constructData.native.function = constructWeakMap;
  57     return ConstructTypeHost;
  58 }
  59
  60 CallType WeakMapConstructor::getCallData(JSCell*, CallData&)
  61 {
  62     return CallTypeNone;
  63 }
  64
  65 }