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581f20e6f2
This makes the implicit run-time assertion in PropertyName::to_string() into an explicit compile-time requirement, removes a wasteful FlyString -> PropertyName -> FlyString construction from NativeFunction::create() and allows setting the function name to a null string for anonymous native functions.
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/WeakRef.h>
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#include <LibJS/Runtime/WeakRefConstructor.h>
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namespace JS {
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WeakRefConstructor::WeakRefConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.WeakRef.as_string(), *global_object.function_prototype())
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{
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}
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void WeakRefConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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// 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
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define_property(vm.names.prototype, global_object.weak_ref_prototype(), 0);
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define_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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WeakRefConstructor::~WeakRefConstructor()
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{
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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Value WeakRefConstructor::call()
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{
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auto& vm = this->vm();
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vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.WeakRef);
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return {};
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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Value WeakRefConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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auto target = vm.argument(0);
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if (!target.is_object()) {
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vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObject, target.to_string_without_side_effects());
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return {};
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}
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return ordinary_create_from_constructor<WeakRef>(global_object, new_target, &GlobalObject::weak_ref_prototype, &target.as_object());
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}
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}
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