Source/JavaScriptCore/runtime/JSPromiseFunctions.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "config.h"
 #include "JSPromiseFunctions.h"

 #if ENABLE(PROMISES)

 #include "Error.h"
 #include "JSCJSValueInlines.h"
 #include "JSCellInlines.h"
 #include "JSPromise.h"
 #include "JSPromiseConstructor.h"
 #include "JSPromiseDeferred.h"
 #include "NumberObject.h"
 #include "StructureInlines.h"

 namespace JSC {

 // Deferred Construction Functions
 static EncodedJSValue JSC_HOST_CALL deferredConstructionFunction(ExecState* exec)
 {
     JSObject* F = exec->callee();

     VM& vm = exec->vm();

     // 1. Set F's [[Resolve]] internal slot to resolve.
     F->putDirect(vm, vm.propertyNames->resolvePrivateName, exec->argument(0));

     // 2. Set F's [[Reject]] internal slot to reject.
     F->putDirect(vm, vm.propertyNames->rejectPrivateName, exec->argument(1));

     // 3. Return.
     return JSValue::encode(jsUndefined());
 }

 JSFunction* createDeferredConstructionFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 2, ASCIILiteral("DeferredConstructionFunction"), deferredConstructionFunction);
 }

 // Identity Functions

 static EncodedJSValue JSC_HOST_CALL identifyFunction(ExecState* exec)
 {
     return JSValue::encode(exec->argument(0));
 }

 JSFunction* createIdentifyFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("IdentityFunction"), identifyFunction);
 }

 // Promise.All Countdown Functions

 static EncodedJSValue JSC_HOST_CALL promiseAllCountdownFunction(ExecState* exec)
 {
     JSValue x = exec->argument(0);
     VM& vm = exec->vm();
     JSObject* F = exec->callee();

     // 1. Let 'index' be the value of F's [[Index]] internal slot.
     uint32_t index = F->get(exec, vm.propertyNames->indexPrivateName).asUInt32();

     // 2. Let 'values' be the value of F's [[Values]] internal slot..
     JSArray* values = jsCast<JSArray*>(F->get(exec, vm.propertyNames->valuesPrivateName));

     // 3. Let 'deferred' be the value of F's [[Deferred]] internal slot.
     JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(F->get(exec, vm.propertyNames->deferredPrivateName));

     // 4. Let 'countdownHolder' be the value of F's [[CountdownHolder]] internal slot.
     NumberObject* countdownHolder = jsCast<NumberObject*>(F->get(exec, vm.propertyNames->countdownHolderPrivateName));

     // 5. Let 'result' be the result of calling the [[DefineOwnProperty]] internal method
     //    of 'values' with arguments 'index' and Property Descriptor { [[Value]]: x,
     //    [[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true }.
     values->putDirectIndex(exec, index, x);

     // 6. RejectIfAbrupt(result, deferred).
     if (exec->hadException())
         abruptRejection(exec, deferred);

     // 7. Set countdownHolder.[[Countdown]] to countdownHolder.[[Countdown]] - 1.
     uint32_t newCountdownValue = countdownHolder->internalValue().asUInt32() - 1;
     countdownHolder->setInternalValue(vm, JSValue(newCountdownValue));

     // 8. If countdownHolder.[[Countdown]] is 0,
     if (!newCountdownValue) {
         // i. Return the result of calling the [[Call]] internal method of deferred.[[Resolve]]
         //    with undefined as thisArgument and a List containing 'values' as argumentsList.
         performDeferredResolve(exec, deferred, values);
     }

     // 9. Return.
     return JSValue::encode(jsUndefined());
 }

 JSFunction* createPromiseAllCountdownFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseAllCountdownFunction"), promiseAllCountdownFunction);
 }

 // Promise Resolution Handler Functions

 static EncodedJSValue JSC_HOST_CALL promiseResolutionHandlerFunction(ExecState* exec)
 {
     JSValue x = exec->argument(0);
     VM& vm = exec->vm();
     JSObject* F = exec->callee();

     // 1. Let 'promise' be the value of F's [[Promise]] internal slot
     JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));

     // 2. Let 'fulfillmentHandler' be the value of F's [[FulfillmentHandler]] internal slot.
     JSValue fulfillmentHandler = F->get(exec, vm.propertyNames->fulfillmentHandlerPrivateName);

     // 3. Let 'rejectionHandler' be the value of F's [[RejectionHandler]] internal slot.
     JSValue rejectionHandler = F->get(exec, vm.propertyNames->rejectionHandlerPrivateName);

     // 4. If SameValue(x, promise) is true,
     if (sameValue(exec, x, promise)) {
         // i. Let 'selfResolutionError' be a newly-created TypeError object.
         JSObject* selfResolutionError = createTypeError(exec, ASCIILiteral("Resolve a promise with itself"));
         // ii. Return the result of calling the [[Call]] internal method of rejectionHandler with
         //     undefined as thisArgument and a List containing selfResolutionError as argumentsList.
         CallData rejectCallData;
         CallType rejectCallType = getCallData(rejectionHandler, rejectCallData);
         ASSERT(rejectCallType != CallTypeNone);

         MarkedArgumentBuffer rejectArguments;
         rejectArguments.append(selfResolutionError);

         return JSValue::encode(call(exec, rejectionHandler, rejectCallType, rejectCallData, jsUndefined(), rejectArguments));
     }

     // 5. Let 'C' be the value of promise's [[PromiseConstructor]] internal slot.
     JSValue C = promise->constructor();

     // 6. Let 'deferred' be the result of calling GetDeferred(C)
     JSValue deferredValue = createJSPromiseDeferredFromConstructor(exec, C);

     // 7. ReturnIfAbrupt(deferred).
     if (exec->hadException())
         return JSValue::encode(jsUndefined());

     JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(deferredValue);

     // 8. Let 'updateResult' be the result of calling UpdateDeferredFromPotentialThenable(x, deferred).
     ThenableStatus updateResult = updateDeferredFromPotentialThenable(exec, x, deferred);

     // 9. ReturnIfAbrupt(updateResult).
     if (exec->hadException())
         return JSValue::encode(jsUndefined());

     // 10. If 'updateResult' is not "not a thenable", return the result of calling
     //     Invoke(deferred.[[Promise]], "then", (fulfillmentHandler, rejectionHandler)).
     // NOTE: Invoke does not seem to be defined anywhere, so I am guessing here.
     if (updateResult != NotAThenable) {
         JSObject* deferredPromise = deferred->promise();

         JSValue thenValue = deferredPromise->get(exec, exec->vm().propertyNames->then);
         if (exec->hadException())
             return JSValue::encode(jsUndefined());

         CallData thenCallData;
         CallType thenCallType = getCallData(thenValue, thenCallData);
         if (thenCallType == CallTypeNone)
             return JSValue::encode(throwTypeError(exec));

         MarkedArgumentBuffer arguments;
         arguments.append(fulfillmentHandler);
         arguments.append(rejectionHandler);

         return JSValue::encode(call(exec, thenValue, thenCallType, thenCallData, deferredPromise, arguments));
     }

     // 11. Return the result of calling the [[Call]] internal method of fulfillmentHandler
     //     with undefined as thisArgument and a List containing x as argumentsList.
     CallData fulfillmentHandlerCallData;
     CallType fulfillmentHandlerCallType = getCallData(fulfillmentHandler, fulfillmentHandlerCallData);
     ASSERT(fulfillmentHandlerCallType != CallTypeNone);

     MarkedArgumentBuffer fulfillmentHandlerArguments;
     fulfillmentHandlerArguments.append(x);

     return JSValue::encode(call(exec, fulfillmentHandler, fulfillmentHandlerCallType, fulfillmentHandlerCallData, jsUndefined(), fulfillmentHandlerArguments));
 }

 JSFunction* createPromiseResolutionHandlerFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseResolutionHandlerFunction"), promiseResolutionHandlerFunction);
 }

 // Reject Promise Functions

 static EncodedJSValue JSC_HOST_CALL rejectPromiseFunction(ExecState* exec)
 {
     JSValue reason = exec->argument(0);
     JSObject* F = exec->callee();
     VM& vm = exec->vm();

     // 1. Let 'promise' be the value of F's [[Promise]] internal slot.
     JSPromise* promise = jsCast<JSPromise*>(F->get(exec, exec->vm().propertyNames->promisePrivateName));

     // 2. Return the result of calling PromiseReject(promise, reason);
     promise->reject(vm, reason);

     return JSValue::encode(jsUndefined());
 }

 JSFunction* createRejectPromiseFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("RejectPromiseFunction"), rejectPromiseFunction);
 }

 // Resolve Promise Functions

 static EncodedJSValue JSC_HOST_CALL resolvePromiseFunction(ExecState* exec)
 {
     JSValue resolution = exec->argument(0);
     JSObject* F = exec->callee();
     VM& vm = exec->vm();

     // 1. Let 'promise' be the value of F's [[Promise]] internal slot.
     JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));

     // 2. Return the result of calling PromiseResolve(promise, resolution);
     promise->resolve(vm, resolution);

     return JSValue::encode(jsUndefined());
 }

 JSFunction* createResolvePromiseFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ResolvePromiseFunction"), resolvePromiseFunction);
 }

 // Thrower Functions

 static EncodedJSValue JSC_HOST_CALL throwerFunction(ExecState* exec)
 {
     return JSValue::encode(exec->vm().throwException(exec, exec->argument(0)));
 }

 JSFunction* createThrowerFunction(VM& vm, JSGlobalObject* globalObject)
 {
     return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ThrowerFunction"), throwerFunction);
 }


 } // namespace JSC

 #endif // ENABLE(PROMISES)
	/*
	* Copyright (C) 2013 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "config.h"
	#include "JSPromiseFunctions.h"

	#if ENABLE(PROMISES)

	#include "Error.h"
	#include "JSCJSValueInlines.h"
	#include "JSCellInlines.h"
	#include "JSPromise.h"
	#include "JSPromiseConstructor.h"
	#include "JSPromiseDeferred.h"
	#include "NumberObject.h"
	#include "StructureInlines.h"

	namespace JSC {

	// Deferred Construction Functions
	static EncodedJSValue JSC_HOST_CALL deferredConstructionFunction(ExecState* exec)
	{
	JSObject* F = exec->callee();

	VM& vm = exec->vm();

	// 1. Set F's [[Resolve]] internal slot to resolve.
	F->putDirect(vm, vm.propertyNames->resolvePrivateName, exec->argument(0));

	// 2. Set F's [[Reject]] internal slot to reject.
	F->putDirect(vm, vm.propertyNames->rejectPrivateName, exec->argument(1));

	// 3. Return.
	return JSValue::encode(jsUndefined());
	}

	JSFunction* createDeferredConstructionFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 2, ASCIILiteral("DeferredConstructionFunction"), deferredConstructionFunction);
	}

	// Identity Functions

	static EncodedJSValue JSC_HOST_CALL identifyFunction(ExecState* exec)
	{
	return JSValue::encode(exec->argument(0));
	}

	JSFunction* createIdentifyFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("IdentityFunction"), identifyFunction);
	}

	// Promise.All Countdown Functions

	static EncodedJSValue JSC_HOST_CALL promiseAllCountdownFunction(ExecState* exec)
	{
	JSValue x = exec->argument(0);
	VM& vm = exec->vm();
	JSObject* F = exec->callee();

	// 1. Let 'index' be the value of F's [[Index]] internal slot.
	uint32_t index = F->get(exec, vm.propertyNames->indexPrivateName).asUInt32();

	// 2. Let 'values' be the value of F's [[Values]] internal slot..
	JSArray* values = jsCast<JSArray*>(F->get(exec, vm.propertyNames->valuesPrivateName));

	// 3. Let 'deferred' be the value of F's [[Deferred]] internal slot.
	JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(F->get(exec, vm.propertyNames->deferredPrivateName));

	// 4. Let 'countdownHolder' be the value of F's [[CountdownHolder]] internal slot.
	NumberObject* countdownHolder = jsCast<NumberObject*>(F->get(exec, vm.propertyNames->countdownHolderPrivateName));

	// 5. Let 'result' be the result of calling the [[DefineOwnProperty]] internal method
	// of 'values' with arguments 'index' and Property Descriptor { [[Value]]: x,
	// [[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true }.
	values->putDirectIndex(exec, index, x);

	// 6. RejectIfAbrupt(result, deferred).
	if (exec->hadException())
	abruptRejection(exec, deferred);

	// 7. Set countdownHolder.[[Countdown]] to countdownHolder.[[Countdown]] - 1.
	uint32_t newCountdownValue = countdownHolder->internalValue().asUInt32() - 1;
	countdownHolder->setInternalValue(vm, JSValue(newCountdownValue));

	// 8. If countdownHolder.[[Countdown]] is 0,
	if (!newCountdownValue) {
	// i. Return the result of calling the [[Call]] internal method of deferred.[[Resolve]]
	// with undefined as thisArgument and a List containing 'values' as argumentsList.
	performDeferredResolve(exec, deferred, values);
	}

	// 9. Return.
	return JSValue::encode(jsUndefined());
	}

	JSFunction* createPromiseAllCountdownFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseAllCountdownFunction"), promiseAllCountdownFunction);
	}

	// Promise Resolution Handler Functions

	static EncodedJSValue JSC_HOST_CALL promiseResolutionHandlerFunction(ExecState* exec)
	{
	JSValue x = exec->argument(0);
	VM& vm = exec->vm();
	JSObject* F = exec->callee();

	// 1. Let 'promise' be the value of F's [[Promise]] internal slot
	JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));

	// 2. Let 'fulfillmentHandler' be the value of F's [[FulfillmentHandler]] internal slot.
	JSValue fulfillmentHandler = F->get(exec, vm.propertyNames->fulfillmentHandlerPrivateName);

	// 3. Let 'rejectionHandler' be the value of F's [[RejectionHandler]] internal slot.
	JSValue rejectionHandler = F->get(exec, vm.propertyNames->rejectionHandlerPrivateName);

	// 4. If SameValue(x, promise) is true,
	if (sameValue(exec, x, promise)) {
	// i. Let 'selfResolutionError' be a newly-created TypeError object.
	JSObject* selfResolutionError = createTypeError(exec, ASCIILiteral("Resolve a promise with itself"));
	// ii. Return the result of calling the [[Call]] internal method of rejectionHandler with
	// undefined as thisArgument and a List containing selfResolutionError as argumentsList.
	CallData rejectCallData;
	CallType rejectCallType = getCallData(rejectionHandler, rejectCallData);
	ASSERT(rejectCallType != CallTypeNone);

	MarkedArgumentBuffer rejectArguments;
	rejectArguments.append(selfResolutionError);

	return JSValue::encode(call(exec, rejectionHandler, rejectCallType, rejectCallData, jsUndefined(), rejectArguments));
	}

	// 5. Let 'C' be the value of promise's [[PromiseConstructor]] internal slot.
	JSValue C = promise->constructor();

	// 6. Let 'deferred' be the result of calling GetDeferred(C)
	JSValue deferredValue = createJSPromiseDeferredFromConstructor(exec, C);

	// 7. ReturnIfAbrupt(deferred).
	if (exec->hadException())
	return JSValue::encode(jsUndefined());

	JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(deferredValue);

	// 8. Let 'updateResult' be the result of calling UpdateDeferredFromPotentialThenable(x, deferred).
	ThenableStatus updateResult = updateDeferredFromPotentialThenable(exec, x, deferred);

	// 9. ReturnIfAbrupt(updateResult).
	if (exec->hadException())
	return JSValue::encode(jsUndefined());

	// 10. If 'updateResult' is not "not a thenable", return the result of calling
	// Invoke(deferred.[[Promise]], "then", (fulfillmentHandler, rejectionHandler)).
	// NOTE: Invoke does not seem to be defined anywhere, so I am guessing here.
	if (updateResult != NotAThenable) {
	JSObject* deferredPromise = deferred->promise();

	JSValue thenValue = deferredPromise->get(exec, exec->vm().propertyNames->then);
	if (exec->hadException())
	return JSValue::encode(jsUndefined());

	CallData thenCallData;
	CallType thenCallType = getCallData(thenValue, thenCallData);
	if (thenCallType == CallTypeNone)
	return JSValue::encode(throwTypeError(exec));

	MarkedArgumentBuffer arguments;
	arguments.append(fulfillmentHandler);
	arguments.append(rejectionHandler);

	return JSValue::encode(call(exec, thenValue, thenCallType, thenCallData, deferredPromise, arguments));
	}

	// 11. Return the result of calling the [[Call]] internal method of fulfillmentHandler
	// with undefined as thisArgument and a List containing x as argumentsList.
	CallData fulfillmentHandlerCallData;
	CallType fulfillmentHandlerCallType = getCallData(fulfillmentHandler, fulfillmentHandlerCallData);
	ASSERT(fulfillmentHandlerCallType != CallTypeNone);

	MarkedArgumentBuffer fulfillmentHandlerArguments;
	fulfillmentHandlerArguments.append(x);

	return JSValue::encode(call(exec, fulfillmentHandler, fulfillmentHandlerCallType, fulfillmentHandlerCallData, jsUndefined(), fulfillmentHandlerArguments));
	}

	JSFunction* createPromiseResolutionHandlerFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseResolutionHandlerFunction"), promiseResolutionHandlerFunction);
	}

	// Reject Promise Functions

	static EncodedJSValue JSC_HOST_CALL rejectPromiseFunction(ExecState* exec)
	{
	JSValue reason = exec->argument(0);
	JSObject* F = exec->callee();
	VM& vm = exec->vm();

	// 1. Let 'promise' be the value of F's [[Promise]] internal slot.
	JSPromise* promise = jsCast<JSPromise*>(F->get(exec, exec->vm().propertyNames->promisePrivateName));

	// 2. Return the result of calling PromiseReject(promise, reason);
	promise->reject(vm, reason);

	return JSValue::encode(jsUndefined());
	}

	JSFunction* createRejectPromiseFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("RejectPromiseFunction"), rejectPromiseFunction);
	}

	// Resolve Promise Functions

	static EncodedJSValue JSC_HOST_CALL resolvePromiseFunction(ExecState* exec)
	{
	JSValue resolution = exec->argument(0);
	JSObject* F = exec->callee();
	VM& vm = exec->vm();

	// 1. Let 'promise' be the value of F's [[Promise]] internal slot.
	JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));

	// 2. Return the result of calling PromiseResolve(promise, resolution);
	promise->resolve(vm, resolution);

	return JSValue::encode(jsUndefined());
	}

	JSFunction* createResolvePromiseFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ResolvePromiseFunction"), resolvePromiseFunction);
	}

	// Thrower Functions

	static EncodedJSValue JSC_HOST_CALL throwerFunction(ExecState* exec)
	{
	return JSValue::encode(exec->vm().throwException(exec, exec->argument(0)));
	}

	JSFunction* createThrowerFunction(VM& vm, JSGlobalObject* globalObject)
	{
	return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ThrowerFunction"), throwerFunction);
	}


	} // namespace JSC

	#endif // ENABLE(PROMISES)