runtime/SetConstructor.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 "SetConstructor.h"
  28
  29 #include "Error.h"
  30 #include "JSCJSValueInlines.h"
  31 #include "JSCellInlines.h"
  32 #include "JSGlobalObject.h"
  33 #include "JSSet.h"
  34 #include "MapData.h"
  35 #include "SetPrototype.h"
  36 #include "StructureInlines.h"
  37
  38 namespace JSC {
  39
  40 const ClassInfo SetConstructor::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(SetConstructor) };
  41
  42 void SetConstructor::finishCreation(VM& vm, SetPrototype* setPrototype)
  43 {
  44     Base::finishCreation(vm, setPrototype->classInfo()->className);
  45     putDirectWithoutTransition(vm, vm.propertyNames->prototype, setPrototype, DontEnum | DontDelete | ReadOnly);
  46     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), ReadOnly | DontEnum | DontDelete);
  47 }
  48
  49 static EncodedJSValue JSC_HOST_CALL callSet(CallFrame* callFrame)
  50 {
  51     // Until we have iterators we throw if we've been given
  52     // any arguments that could require us to throw.
  53     if (!callFrame->argument(0).isUndefinedOrNull())
  54         return JSValue::encode(throwTypeError(callFrame, ASCIILiteral("Set does not accept arguments when called as a function")));
  55     if (!callFrame->argument(1).isUndefined())
  56         return throwVMError(callFrame, createRangeError(callFrame, WTF::ASCIILiteral("Invalid comparator function")));
  57
  58     JSGlobalObject* globalObject = asInternalFunction(callFrame->callee())->globalObject();
  59     Structure* setStructure = globalObject->setStructure();
  60     return JSValue::encode(JSSet::create(callFrame, setStructure));
  61 }
  62
  63 static EncodedJSValue JSC_HOST_CALL constructSet(CallFrame* callFrame)
  64 {
  65     JSGlobalObject* globalObject = asInternalFunction(callFrame->callee())->globalObject();
  66     Structure* setStructure = globalObject->setStructure();
  67     JSSet* set = JSSet::create(callFrame, setStructure);
  68     MapData* mapData = set->mapData();
  69     size_t count = callFrame->argumentCount();
  70     for (size_t i = 0; i < count; i++) {
  71         JSValue item = callFrame->uncheckedArgument(i);
  72         mapData->set(callFrame, item, item);
  73     }
  74     return JSValue::encode(set);
  75 }
  76
  77 ConstructType SetConstructor::getConstructData(JSCell*, ConstructData& constructData)
  78 {
  79     constructData.native.function = constructSet;
  80     return ConstructTypeHost;
  81 }
  82
  83 CallType SetConstructor::getCallData(JSCell*, CallData& callData)
  84 {
  85     callData.native.function = callSet;
  86     return CallTypeHost;
  87 }
  88
  89 }