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50428ea8d2
Intrinsics, i.e. mostly constructor and prototype objects, but also things like empty and new object shape now live on a new heap-allocated JS::Intrinsics object, thus completing the long journey of taking all the magic away from the global object. This represents the Realm's [[Intrinsics]] slot in the spec and matches its existing [[GlobalObject]] / [[GlobalEnv]] slots in terms of architecture. In the majority of cases it should now be possibly to fully allocate a regular object without the global object existing, and in fact that's what we do now - the realm is allocated before the global object, and the intrinsics between both :^)
69 lines
2.1 KiB
C++
69 lines
2.1 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/IteratorOperations.h>
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#include <LibJS/Runtime/Set.h>
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#include <LibJS/Runtime/SetConstructor.h>
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namespace JS {
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SetConstructor::SetConstructor(Realm& realm)
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: NativeFunction(vm().names.Set.as_string(), *realm.intrinsics().function_prototype())
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{
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}
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void SetConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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// 24.2.2.1 Set.prototype, https://tc39.es/ecma262/#sec-set.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().set_prototype(), 0);
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define_native_accessor(realm, *vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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// 24.2.1.1 Set ( [ iterable ] ), https://tc39.es/ecma262/#sec-set-iterable
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ThrowCompletionOr<Value> SetConstructor::call()
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{
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auto& vm = this->vm();
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return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.Set);
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}
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// 24.2.1.1 Set ( [ iterable ] ), https://tc39.es/ecma262/#sec-set-iterable
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ThrowCompletionOr<Object*> SetConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto* set = TRY(ordinary_create_from_constructor<Set>(vm, new_target, &Intrinsics::set_prototype));
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if (vm.argument(0).is_nullish())
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return set;
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auto adder = TRY(set->get(vm.names.add));
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if (!adder.is_function())
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return vm.throw_completion<TypeError>(ErrorType::NotAFunction, "'add' property of Set");
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(void)TRY(get_iterator_values(vm, vm.argument(0), [&](Value iterator_value) -> Optional<Completion> {
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TRY(JS::call(vm, adder.as_function(), set, iterator_value));
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return {};
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}));
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return set;
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}
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// 24.2.2.2 get Set [ @@species ], https://tc39.es/ecma262/#sec-get-set-@@species
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JS_DEFINE_NATIVE_FUNCTION(SetConstructor::symbol_species_getter)
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{
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return vm.this_value();
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}
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}
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