1/*
2 * Copyright (C) 2019 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 "WeakObjectRefConstructor.h"
28
29#include "Error.h"
30#include "IteratorOperations.h"
31#include "JSCInlines.h"
32#include "JSGlobalObject.h"
33#include "JSObjectInlines.h"
34#include "JSWeakObjectRef.h"
35#include "WeakObjectRefPrototype.h"
36
37namespace JSC {
38
39const ClassInfo WeakObjectRefConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakObjectRefConstructor) };
40
41void WeakObjectRefConstructor::finishCreation(VM& vm, WeakObjectRefPrototype* prototype)
42{
43 Base::finishCreation(vm, "WeakRef"_s, NameVisibility::Visible, NameAdditionMode::WithoutStructureTransition);
44 putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
45 putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
46}
47
48static EncodedJSValue JSC_HOST_CALL callWeakRef(ExecState*);
49static EncodedJSValue JSC_HOST_CALL constructWeakRef(ExecState*);
50
51WeakObjectRefConstructor::WeakObjectRefConstructor(VM& vm, Structure* structure)
52 : Base(vm, structure, callWeakRef, constructWeakRef)
53{
54}
55
56static EncodedJSValue JSC_HOST_CALL callWeakRef(ExecState* exec)
57{
58 VM& vm = exec->vm();
59 auto scope = DECLARE_THROW_SCOPE(vm);
60 return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(exec, scope, "WeakRef"));
61}
62
63static EncodedJSValue JSC_HOST_CALL constructWeakRef(ExecState* exec)
64{
65 VM& vm = exec->vm();
66 auto scope = DECLARE_THROW_SCOPE(vm);
67
68 if (!exec->argument(0).isObject())
69 return throwVMTypeError(exec, scope, "First argument to WeakRef should be an object"_s);
70
71 JSGlobalObject* globalObject = jsCast<InternalFunction*>(exec->jsCallee())->globalObject(vm);
72 Structure* WeakObjectRefStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->weakObjectRefStructure());
73 RETURN_IF_EXCEPTION(scope, encodedJSValue());
74 RELEASE_AND_RETURN(scope, JSValue::encode(JSWeakObjectRef::create(vm, WeakObjectRefStructure, exec->uncheckedArgument(0).getObject())));
75}
76
77}
78
79