b84f8fb55b
Some of these are allocated upon initialization of the intrinsics, and some lazily, but in neither case the getters actually return a nullptr. This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has an `operator T&()`), and also has the interesting side effect of forcing us to explicitly use the FunctionObject& overload of call(), as passing a NonnullGCPtr is ambigous - it could implicitly be turned into a Value _or_ a FunctionObject& (so we have to dereference manually).
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020, Jack Karamanian <karamanian.jack@gmail.com>
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* Copyright (c) 2021-2023, Linus Groh <linusg@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/BooleanConstructor.h>
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#include <LibJS/Runtime/BooleanObject.h>
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#include <LibJS/Runtime/GlobalObject.h>
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namespace JS {
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BooleanConstructor::BooleanConstructor(Realm& realm)
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: NativeFunction(realm.vm().names.Boolean.as_string(), realm.intrinsics().function_prototype())
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{
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}
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ThrowCompletionOr<void> BooleanConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
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// 20.3.2.1 Boolean.prototype, https://tc39.es/ecma262/#sec-boolean.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().boolean_prototype(), 0);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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return {};
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}
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// 20.3.1.1 Boolean ( value ), https://tc39.es/ecma262/#sec-boolean-constructor-boolean-value
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ThrowCompletionOr<Value> BooleanConstructor::call()
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{
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auto& vm = this->vm();
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auto value = vm.argument(0);
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// 1. Let b be ToBoolean(value).
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auto b = value.to_boolean();
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// 2. If NewTarget is undefined, return b.
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return Value(b);
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}
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// 20.3.1.1 Boolean ( value ), https://tc39.es/ecma262/#sec-boolean-constructor-boolean-value
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ThrowCompletionOr<NonnullGCPtr<Object>> BooleanConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto value = vm.argument(0);
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// 1. Let b be ToBoolean(value).
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auto b = value.to_boolean();
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// 3. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%Boolean.prototype%", « [[BooleanData]] »).
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// 4. Set O.[[BooleanData]] to b.
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// 5. Return O.
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return TRY(ordinary_create_from_constructor<BooleanObject>(vm, new_target, &Intrinsics::boolean_prototype, b));
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}
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}
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