LibJS: Implement Atomics.and

1 files changed, 19 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/AtomicsObject.cpp b/Userland/Libraries/LibJS/Runtime/AtomicsObject.cpp
index ce6e0dd770..c149ee7fe4 100644
--- a/Userland/Libraries/LibJS/Runtime/AtomicsObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AtomicsObject.cpp
@@ -118,6 +118,7 @@ void AtomicsObject::initialize(GlobalObject& global_object)
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
     define_native_function(vm.names.add, add, 3, attr);
+    define_native_function(vm.names.and_, and_, 3, attr);
     define_native_function(vm.names.load, load, 2, attr);
 
     // 25.4.15 Atomics [ @@toStringTag ], https://tc39.es/ecma262/#sec-atomics-@@tostringtag
@@ -142,6 +143,24 @@ JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::add)
     VERIFY_NOT_REACHED();
 }
 
+// 25.4.4 Atomics.and ( typedArray, index, value ), https://tc39.es/ecma262/#sec-atomics.and
+JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::and_)
+{
+    auto* typed_array = typed_array_from(global_object, vm.argument(0));
+    if (!typed_array)
+        return {};
+
+    auto atomic_and = [](auto* storage, auto value) { return AK::atomic_fetch_and(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_and));
+    JS_ENUMERATE_TYPED_ARRAYS
+#undef __JS_ENUMERATE
+
+    VERIFY_NOT_REACHED();
+}
+
 // 25.4.8 Atomics.load ( typedArray, index ), https://tc39.es/ecma262/#sec-atomics.load
 JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::load)
 {