runtime/MapConstructor.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 "MapConstructor.h"
  28
  29 #include "Error.h"
  30 #include "JSCJSValueInlines.h"
  31 #include "JSCellInlines.h"
  32 #include "JSGlobalObject.h"
  33 #include "JSMap.h"
  34 #include "MapPrototype.h"
  35 #include "StructureInlines.h"
  36
  37 namespace JSC {
  38
  39 const ClassInfo MapConstructor::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(MapConstructor) };
  40
  41 void MapConstructor::finishCreation(VM& vm, MapPrototype* mapPrototype)
  42 {
  43     Base::finishCreation(vm, mapPrototype->classInfo()->className);
  44     putDirectWithoutTransition(vm, vm.propertyNames->prototype, mapPrototype, DontEnum | DontDelete | ReadOnly);
  45     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), ReadOnly | DontEnum | DontDelete);
  46 }
  47
  48 static EncodedJSValue JSC_HOST_CALL constructMap(ExecState* exec)
  49 {
  50     // Until we have iterators we throw if we've been given
  51     // any arguments that could require us to throw.
  52     if (!exec->argument(0).isUndefinedOrNull())
  53         return JSValue::encode(throwTypeError(exec, ASCIILiteral("Map constructor does not accept arguments")));
  54     if (!exec->argument(1).isUndefined())
  55         return throwVMError(exec, createRangeError(exec, WTF::ASCIILiteral("Invalid comparator function")));
  56
  57     JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
  58     Structure* mapStructure = globalObject->mapStructure();
  59     return JSValue::encode(JSMap::create(exec, mapStructure));
  60 }
  61
  62 ConstructType MapConstructor::getConstructData(JSCell*, ConstructData& constructData)
  63 {
  64     constructData.native.function = constructMap;
  65     return ConstructTypeHost;
  66 }
  67
  68 CallType MapConstructor::getCallData(JSCell*, CallData& callData)
  69 {
  70     callData.native.function = constructMap;
  71     return CallTypeHost;
  72 }
  73
  74 }