runtime/JSPromiseConstructor.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 "JSPromiseConstructor.h"
  28
  29 #if ENABLE(PROMISES)
  30
  31 #include "Error.h"
  32 #include "Exception.h"
  33 #include "IteratorOperations.h"
  34 #include "JSCBuiltins.h"
  35 #include "JSCJSValueInlines.h"
  36 #include "JSCellInlines.h"
  37 #include "JSPromise.h"
  38 #include "JSPromisePrototype.h"
  39 #include "Lookup.h"
  40 #include "NumberObject.h"
  41 #include "StructureInlines.h"
  42
  43 namespace JSC {
  44
  45 STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSPromiseConstructor);
  46
  47 }
  48
  49 #include "JSPromiseConstructor.lut.h"
  50
  51 namespace JSC {
  52
  53 const ClassInfo JSPromiseConstructor::s_info = { "Function", &InternalFunction::s_info, &promiseConstructorTable, CREATE_METHOD_TABLE(JSPromiseConstructor) };
  54
  55 /* Source for JSPromiseConstructor.lut.h
  56 @begin promiseConstructorTable
  57   resolve         JSPromiseConstructorFuncResolve             DontEnum|Function 1
  58   reject          JSPromiseConstructorFuncReject              DontEnum|Function 1
  59   race            JSPromiseConstructorFuncRace                DontEnum|Function 1
  60   all             JSPromiseConstructorFuncAll                 DontEnum|Function 1
  61 @end
  62 */
  63
  64 JSPromiseConstructor* JSPromiseConstructor::create(VM& vm, Structure* structure, JSPromisePrototype* promisePrototype)
  65 {
  66     JSPromiseConstructor* constructor = new (NotNull, allocateCell<JSPromiseConstructor>(vm.heap)) JSPromiseConstructor(vm, structure);
  67     constructor->finishCreation(vm, promisePrototype);
  68     return constructor;
  69 }
  70
  71 Structure* JSPromiseConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
  72 {
  73     return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
  74 }
  75
  76 JSPromiseConstructor::JSPromiseConstructor(VM& vm, Structure* structure)
  77     : InternalFunction(vm, structure)
  78 {
  79 }
  80
  81 void JSPromiseConstructor::finishCreation(VM& vm, JSPromisePrototype* promisePrototype)
  82 {
  83     Base::finishCreation(vm, ASCIILiteral("Promise"));
  84     putDirectWithoutTransition(vm, vm.propertyNames->prototype, promisePrototype, DontEnum | DontDelete | ReadOnly);
  85     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
  86 }
  87
  88 static EncodedJSValue JSC_HOST_CALL constructPromise(ExecState* exec)
  89 {
  90     VM& vm = exec->vm();
  91     JSGlobalObject* globalObject = exec->callee()->globalObject();
  92
  93     JSPromise* promise = JSPromise::create(vm, globalObject);
  94
  95     JSFunction* initializePromise = globalObject->initializePromiseFunction();
  96     CallData callData;
  97     CallType callType = getCallData(initializePromise, callData);
  98     ASSERT(callType != CallTypeNone);
  99
 100     MarkedArgumentBuffer arguments;
 101     arguments.append(exec->argument(0));
 102     call(exec, initializePromise, callType, callData, promise, arguments);
 103
 104     return JSValue::encode(promise);
 105 }
 106
 107 ConstructType JSPromiseConstructor::getConstructData(JSCell*, ConstructData& constructData)
 108 {
 109     constructData.native.function = constructPromise;
 110     return ConstructTypeHost;
 111 }
 112
 113 CallType JSPromiseConstructor::getCallData(JSCell*, CallData& callData)
 114 {
 115     callData.native.function = constructPromise;
 116     return CallTypeHost;
 117 }
 118
 119 bool JSPromiseConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
 120 {
 121     return getStaticFunctionSlot<InternalFunction>(exec, promiseConstructorTable, jsCast<JSPromiseConstructor*>(object), propertyName, slot);
 122 }
 123
 124 JSPromise* constructPromise(ExecState* exec, JSGlobalObject* globalObject, JSFunction* resolver)
 125 {
 126     JSPromiseConstructor* promiseConstructor = globalObject->promiseConstructor();
 127
 128     ConstructData constructData;
 129     ConstructType constructType = getConstructData(promiseConstructor, constructData);
 130     ASSERT(constructType != ConstructTypeNone);
 131
 132     MarkedArgumentBuffer arguments;
 133     arguments.append(resolver);
 134
 135     return jsCast<JSPromise*>(construct(exec, promiseConstructor, constructType, constructData, arguments));
 136 }
 137
 138 } // namespace JSC
 139
 140 #endif // ENABLE(PROMISES)