40d9cc50cb31382d5d216861fdcd1af0df351e98
[WebKit-https.git] / Source / JavaScriptCore / runtime / WeakSetConstructor.cpp
1 /*
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12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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24  */
25
26 #include "config.h"
27 #include "WeakSetConstructor.h"
28
29 #include "Error.h"
30 #include "IteratorOperations.h"
31 #include "JSCInlines.h"
32 #include "JSGlobalObject.h"
33 #include "JSObjectInlines.h"
34 #include "JSWeakSet.h"
35 #include "WeakSetPrototype.h"
36
37 namespace JSC {
38
39 const ClassInfo WeakSetConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakSetConstructor) };
40
41 void WeakSetConstructor::finishCreation(VM& vm, WeakSetPrototype* prototype)
42 {
43     Base::finishCreation(vm, prototype->classInfo(vm)->className);
44     putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
45     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
46 }
47
48 static EncodedJSValue JSC_HOST_CALL callWeakSet(ExecState*);
49 static EncodedJSValue JSC_HOST_CALL constructWeakSet(ExecState*);
50
51 WeakSetConstructor::WeakSetConstructor(VM& vm, Structure* structure)
52     : Base(vm, structure, callWeakSet, constructWeakSet)
53 {
54 }
55
56 static EncodedJSValue JSC_HOST_CALL callWeakSet(ExecState* exec)
57 {
58     VM& vm = exec->vm();
59     auto scope = DECLARE_THROW_SCOPE(vm);
60     return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(exec, scope, "WeakSet"));
61 }
62
63 static EncodedJSValue JSC_HOST_CALL constructWeakSet(ExecState* exec)
64 {
65     VM& vm = exec->vm();
66     auto scope = DECLARE_THROW_SCOPE(vm);
67
68     JSGlobalObject* globalObject = asInternalFunction(exec->jsCallee())->globalObject();
69     Structure* weakSetStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->weakSetStructure());
70     RETURN_IF_EXCEPTION(scope, encodedJSValue());
71     JSWeakSet* weakSet = JSWeakSet::create(exec, weakSetStructure);
72     JSValue iterable = exec->argument(0);
73     if (iterable.isUndefinedOrNull())
74         return JSValue::encode(weakSet);
75
76     JSValue adderFunction = weakSet->JSObject::get(exec, vm.propertyNames->add);
77     RETURN_IF_EXCEPTION(scope, encodedJSValue());
78
79     CallData adderFunctionCallData;
80     CallType adderFunctionCallType = getCallData(adderFunction, adderFunctionCallData);
81     if (adderFunctionCallType == CallType::None)
82         return JSValue::encode(throwTypeError(exec, scope));
83
84     scope.release();
85     forEachInIterable(exec, iterable, [&](VM&, ExecState* exec, JSValue nextValue) {
86         MarkedArgumentBuffer arguments;
87         arguments.append(nextValue);
88         ASSERT(!arguments.hasOverflowed());
89         call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakSet, arguments);
90     });
91
92     return JSValue::encode(weakSet);
93 }
94
95 }