1/*
2 * Copyright (C) 2013-2017 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 "JSPromise.h"
28
29#include "BuiltinNames.h"
30#include "Error.h"
31#include "JSCInlines.h"
32#include "JSPromiseConstructor.h"
33#include "Microtask.h"
34
35namespace JSC {
36
37const ClassInfo JSPromise::s_info = { "Promise", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSPromise) };
38
39JSPromise* JSPromise::create(VM& vm, Structure* structure)
40{
41 JSPromise* promise = new (NotNull, allocateCell<JSPromise>(vm.heap)) JSPromise(vm, structure);
42 promise->finishCreation(vm);
43 return promise;
44}
45
46Structure* JSPromise::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
47{
48 return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
49}
50
51JSPromise::JSPromise(VM& vm, Structure* structure)
52 : Base(vm, structure)
53{
54}
55
56void JSPromise::finishCreation(VM& vm)
57{
58 Base::finishCreation(vm);
59 putDirect(vm, vm.propertyNames->builtinNames().promiseStatePrivateName(), jsNumber(static_cast<unsigned>(Status::Pending)));
60 putDirect(vm, vm.propertyNames->builtinNames().promiseReactionsPrivateName(), jsUndefined());
61 putDirect(vm, vm.propertyNames->builtinNames().promiseResultPrivateName(), jsUndefined());
62}
63
64void JSPromise::initialize(ExecState* exec, JSGlobalObject* globalObject, JSValue executor)
65{
66 JSFunction* initializePromise = globalObject->initializePromiseFunction();
67 CallData callData;
68 CallType callType = JSC::getCallData(exec->vm(), initializePromise, callData);
69 ASSERT(callType != CallType::None);
70
71 MarkedArgumentBuffer arguments;
72 arguments.append(executor);
73 ASSERT(!arguments.hasOverflowed());
74 call(exec, initializePromise, callType, callData, this, arguments);
75}
76
77auto JSPromise::status(VM& vm) const -> Status
78{
79 JSValue value = getDirect(vm, vm.propertyNames->builtinNames().promiseStatePrivateName());
80 ASSERT(value.isUInt32());
81 return static_cast<Status>(value.asUInt32());
82}
83
84JSValue JSPromise::result(VM& vm) const
85{
86 return getDirect(vm, vm.propertyNames->builtinNames().promiseResultPrivateName());
87}
88
89bool JSPromise::isHandled(VM& vm) const
90{
91 JSValue value = getDirect(vm, vm.propertyNames->builtinNames().promiseIsHandledPrivateName());
92 ASSERT(value.isBoolean());
93 return value.asBoolean();
94}
95
96JSPromise* JSPromise::resolve(JSGlobalObject& globalObject, JSValue value)
97{
98 auto* exec = globalObject.globalExec();
99 auto& vm = exec->vm();
100 auto scope = DECLARE_THROW_SCOPE(vm);
101
102 auto* promiseResolveFunction = globalObject.promiseResolveFunction();
103 CallData callData;
104 auto callType = JSC::getCallData(vm, promiseResolveFunction, callData);
105 ASSERT(callType != CallType::None);
106
107 MarkedArgumentBuffer arguments;
108 arguments.append(value);
109 ASSERT(!arguments.hasOverflowed());
110 auto result = call(exec, promiseResolveFunction, callType, callData, globalObject.promiseConstructor(), arguments);
111 RETURN_IF_EXCEPTION(scope, nullptr);
112 ASSERT(result.inherits<JSPromise>(vm));
113 return jsCast<JSPromise*>(result);
114}
115
116} // namespace JSC
117