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LibJS: Implement Atomics.sub

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Timothy Flynn 2021-07-11 13:28:52 -04:00 • committed by Linus Groh
commit d2f6255b91
Notes: sideshowbarker 2024-07-18 09:02:14 +09:00
3 changed files with 94 additions and 0 deletions
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19
Userland/Libraries/LibJS/Runtime/AtomicsObject.cpp
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@ -121,6 +121,7 @@ void AtomicsObject::initialize(GlobalObject& global_object)
define_native_function(vm.names.and_, and_, 3, attr);
define_native_function(vm.names.load, load, 2, attr);
define_native_function(vm.names.or_, or_, 3, attr);
define_native_function(vm.names.sub, sub, 3, attr);
// 25.4.15 Atomics [ @@toStringTag ], https://tc39.es/ecma262/#sec-atomics-@@tostringtag
define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "Atomics"), Attribute::Configurable);
@ -203,4 +204,22 @@ JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::or_)
VERIFY_NOT_REACHED();
}
// 25.4.11 Atomics.sub ( typedArray, index, value ), https://tc39.es/ecma262/#sec-atomics.sub
JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::sub)
{
auto* typed_array = typed_array_from(global_object, vm.argument(0));
if (!typed_array)
return {};
auto atomic_sub = [](auto* storage, auto value) { return AK::atomic_fetch_sub(storage, value); };
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, Type) \
if (is<ClassName>(typed_array)) \
return perform_atomic_operation<Type>(global_object, *typed_array, move(atomic_sub));
JS_ENUMERATE_TYPED_ARRAYS
#undef __JS_ENUMERATE
VERIFY_NOT_REACHED();
}
}