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@@ -60,11 +60,74 @@ ThrowCompletionOr<bool> ObjectPrototype::internal_set_prototype_of(Object* proto
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// 20.1.3.2 Object.prototype.hasOwnProperty ( V ), https://tc39.es/ecma262/#sec-object.prototype.hasownproperty
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::has_own_property)
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{
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+ // 1. Let P be ? ToPropertyKey(V).
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auto property_key = TRY(vm.argument(0).to_property_key(vm));
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+
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+ // 2. Let O be ? ToObject(this value).
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auto this_object = TRY(vm.this_value().to_object(vm));
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+
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+ // 3. Return ? HasOwnProperty(O, P).
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return Value(TRY(this_object->has_own_property(property_key)));
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}
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+// 20.1.3.3 Object.prototype.isPrototypeOf ( V ), https://tc39.es/ecma262/#sec-object.prototype.isprototypeof
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+JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::is_prototype_of)
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+{
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+ auto object_argument = vm.argument(0);
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+
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+ // 1. If V is not an Object, return false.
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+ if (!object_argument.is_object())
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+ return Value(false);
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+ auto* object = &object_argument.as_object();
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+
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+ // 2. Let O be ? ToObject(this value).
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+ auto this_object = TRY(vm.this_value().to_object(vm));
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+
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+ // 3. Repeat,
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+ for (;;) {
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+ // a. Set V to ? V.[[GetPrototypeOf]]().
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+ object = TRY(object->internal_get_prototype_of());
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+
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+ // b. If V is null, return false.
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+ if (!object)
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+ return Value(false);
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+
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+ // c. If SameValue(O, V) is true, return true.
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+ if (same_value(this_object, object))
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+ return Value(true);
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+ }
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+}
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+
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+// 20.1.3.4 Object.prototype.propertyIsEnumerable ( V ), https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable
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+JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::property_is_enumerable)
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+{
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+ // 1. Let P be ? ToPropertyKey(V).
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+ auto property_key = TRY(vm.argument(0).to_property_key(vm));
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+
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+ // 2. Let O be ? ToObject(this value).
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+ auto this_object = TRY(vm.this_value().to_object(vm));
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+
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+ // 3. Let desc be ? O.[[GetOwnProperty]](P).
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+ auto property_descriptor = TRY(this_object->internal_get_own_property(property_key));
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+
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+ // 4. If desc is undefined, return false.
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+ if (!property_descriptor.has_value())
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+ return Value(false);
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+
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+ // 5. Return desc.[[Enumerable]].
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+ return Value(*property_descriptor->enumerable);
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+}
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+
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+// 20.1.3.5 Object.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-object.prototype.tolocalestring
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+JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_locale_string)
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+{
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+ // 1. Let O be the this value.
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+ auto this_value = vm.this_value();
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+
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+ // 2. Return ? Invoke(O, "toString").
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+ return this_value.invoke(vm, vm.names.toString);
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+}
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+
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// 20.1.3.6 Object.prototype.toString ( ), https://tc39.es/ecma262/#sec-object.prototype.tostring
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_string)
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{
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@@ -133,153 +196,169 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_string)
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return PrimitiveString::create(vm, DeprecatedString::formatted("[object {}]", tag));
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}
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-// 20.1.3.5 Object.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-object.prototype.tolocalestring
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-JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_locale_string)
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-{
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- auto this_value = vm.this_value();
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- return this_value.invoke(vm, vm.names.toString);
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-}
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-
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// 20.1.3.7 Object.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-object.prototype.valueof
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::value_of)
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{
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+ // 1. Return ? ToObject(this value).
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return TRY(vm.this_value().to_object(vm));
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}
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-// 20.1.3.4 Object.prototype.propertyIsEnumerable ( V ), https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable
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-JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::property_is_enumerable)
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+// 20.1.3.8.1 get Object.prototype.__proto__, https://tc39.es/ecma262/#sec-get-object.prototype.__proto__
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+JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::proto_getter)
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{
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- // 1. Let P be ? ToPropertyKey(V).
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- auto property_key = TRY(vm.argument(0).to_property_key(vm));
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- // 2. Let O be ? ToObject(this value).
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- auto this_object = TRY(vm.this_value().to_object(vm));
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- // 3. Let desc be ? O.[[GetOwnProperty]](P).
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- auto property_descriptor = TRY(this_object->internal_get_own_property(property_key));
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- // 4. If desc is undefined, return false.
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- if (!property_descriptor.has_value())
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- return Value(false);
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- // 5. Return desc.[[Enumerable]].
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- return Value(*property_descriptor->enumerable);
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+ // 1. Let O be ? ToObject(this value).
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+ auto object = TRY(vm.this_value().to_object(vm));
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+
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+ // 2. Return ? O.[[GetPrototypeOf]]().
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+ return TRY(object->internal_get_prototype_of());
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}
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-// 20.1.3.3 Object.prototype.isPrototypeOf ( V ), https://tc39.es/ecma262/#sec-object.prototype.isprototypeof
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-JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::is_prototype_of)
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+// 20.1.3.8.2 set Object.prototype.__proto__, https://tc39.es/ecma262/#sec-set-object.prototype.__proto__
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+JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::proto_setter)
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{
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- auto object_argument = vm.argument(0);
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- if (!object_argument.is_object())
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- return Value(false);
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- auto* object = &object_argument.as_object();
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- auto this_object = TRY(vm.this_value().to_object(vm));
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+ auto proto = vm.argument(0);
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- for (;;) {
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- object = TRY(object->internal_get_prototype_of());
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- if (!object)
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- return Value(false);
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- if (same_value(this_object, object))
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- return Value(true);
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+ // 1. Let O be ? RequireObjectCoercible(this value).
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+ auto object = TRY(require_object_coercible(vm, vm.this_value()));
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+
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+ // 2. If proto is not an Object and proto is not null, return undefined.
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+ if (!proto.is_object() && !proto.is_null())
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+ return js_undefined();
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+
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+ // 3. If O is not an Object, return undefined.
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+ if (!object.is_object())
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+ return js_undefined();
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+
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+ // 4. Let status be ? O.[[SetPrototypeOf]](proto).
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+ auto status = TRY(object.as_object().internal_set_prototype_of(proto.is_object() ? &proto.as_object() : nullptr));
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+
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+ // 5. If status is false, throw a TypeError exception.
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+ if (!status) {
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+ // FIXME: Improve/contextualize error message
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+ return vm.throw_completion<TypeError>(ErrorType::ObjectSetPrototypeOfReturnedFalse);
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}
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+
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+ // 6. Return undefined.
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+ return js_undefined();
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}
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-// B.2.2.2 Object.prototype.__defineGetter__ ( P, getter ), https://tc39.es/ecma262/#sec-object.prototype.__defineGetter__
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+// 20.1.3.9.1 Object.prototype.__defineGetter__ ( P, getter ), https://tc39.es/ecma262/#sec-object.prototype.__defineGetter__
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::define_getter)
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{
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+ auto property = vm.argument(0);
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+ auto getter = vm.argument(1);
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+
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+ // 1. Let O be ? ToObject(this value).
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auto object = TRY(vm.this_value().to_object(vm));
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- auto getter = vm.argument(1);
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+ // 2. If IsCallable(getter) is false, throw a TypeError exception.
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if (!getter.is_function())
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return vm.throw_completion<TypeError>(ErrorType::NotAFunction, TRY_OR_THROW_OOM(vm, getter.to_string_without_side_effects()));
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+ // 3. Let desc be PropertyDescriptor { [[Get]]: getter, [[Enumerable]]: true, [[Configurable]]: true }.
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auto descriptor = PropertyDescriptor { .get = &getter.as_function(), .enumerable = true, .configurable = true };
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- auto key = TRY(vm.argument(0).to_property_key(vm));
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+ // 4. Let key be ? ToPropertyKey(P).
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+ auto key = TRY(property.to_property_key(vm));
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+ // 5. Perform ? DefinePropertyOrThrow(O, key, desc).
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TRY(object->define_property_or_throw(key, descriptor));
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+ // 6. Return undefined.
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return js_undefined();
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}
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-// B.2.2.3 Object.prototype.__defineSetter__ ( P, getter ), https://tc39.es/ecma262/#sec-object.prototype.__defineSetter__
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+// 20.1.3.9.2 Object.prototype.__defineSetter__ ( P, setter ), https://tc39.es/ecma262/#sec-object.prototype.__defineSetter__
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::define_setter)
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{
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+ auto property = vm.argument(0);
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+ auto setter = vm.argument(1);
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+
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+ // 1. Let O be ? ToObject(this value).
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auto object = TRY(vm.this_value().to_object(vm));
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- auto setter = vm.argument(1);
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+ // 2. If IsCallable(setter) is false, throw a TypeError exception.
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if (!setter.is_function())
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return vm.throw_completion<TypeError>(ErrorType::NotAFunction, TRY_OR_THROW_OOM(vm, setter.to_string_without_side_effects()));
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+ // 3. Let desc be PropertyDescriptor { [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: true }.
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auto descriptor = PropertyDescriptor { .set = &setter.as_function(), .enumerable = true, .configurable = true };
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- auto key = TRY(vm.argument(0).to_property_key(vm));
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+ // 4. Let key be ? ToPropertyKey(P).
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+ auto key = TRY(property.to_property_key(vm));
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+ // 5. Perform ? DefinePropertyOrThrow(O, key, desc).
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TRY(object->define_property_or_throw(key, descriptor));
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+ // 6. Return undefined.
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return js_undefined();
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}
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-// B.2.2.4 Object.prototype.__lookupGetter__ ( P ), https://tc39.es/ecma262/#sec-object.prototype.__lookupGetter__
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+// 20.1.3.9.3 Object.prototype.__lookupGetter__ ( P ), https://tc39.es/ecma262/#sec-object.prototype.__lookupGetter__
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::lookup_getter)
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{
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+ auto property = vm.argument(0);
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+
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+ // 1. Let O be ? ToObject(this value).
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auto object = GCPtr { TRY(vm.this_value().to_object(vm)) };
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- auto key = TRY(vm.argument(0).to_property_key(vm));
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+ // 2. Let key be ? ToPropertyKey(P).
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+ auto key = TRY(property.to_property_key(vm));
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+ // 3. Repeat,
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while (object) {
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+ // a. Let desc be ? O.[[GetOwnProperty]](key).
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auto desc = TRY(object->internal_get_own_property(key));
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+
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+ // b. If desc is not undefined, then
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if (desc.has_value()) {
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+ // i. If IsAccessorDescriptor(desc) is true, return desc.[[Get]].
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if (desc->is_accessor_descriptor())
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return *desc->get ?: js_undefined();
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+
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+ // ii. Return undefined.
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return js_undefined();
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}
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+
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+ // c. Set O to ? O.[[GetPrototypeOf]]().
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object = TRY(object->internal_get_prototype_of());
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}
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+ // d. If O is null, return undefined.
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return js_undefined();
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}
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-// B.2.2.5 Object.prototype.__lookupSetter__ ( P ), https://tc39.es/ecma262/#sec-object.prototype.__lookupSetter__
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+// 20.1.3.9.4 Object.prototype.__lookupSetter__ ( P ), https://tc39.es/ecma262/#sec-object.prototype.__lookupSetter__
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JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::lookup_setter)
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{
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+ auto property = vm.argument(0);
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+
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+ // 1. Let O be ? ToObject(this value).
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auto object = GCPtr { TRY(vm.this_value().to_object(vm)) };
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- auto key = TRY(vm.argument(0).to_property_key(vm));
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+ // 2. Let key be ? ToPropertyKey(P).
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+ auto key = TRY(property.to_property_key(vm));
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+ // 3. Repeat,
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while (object) {
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+ // a. Let desc be ? O.[[GetOwnProperty]](key).
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auto desc = TRY(object->internal_get_own_property(key));
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+
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+ // b. If desc is not undefined, then
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if (desc.has_value()) {
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+ // i. If IsAccessorDescriptor(desc) is true, return desc.[[Set]].
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if (desc->is_accessor_descriptor())
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return *desc->set ?: js_undefined();
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+
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+ // ii. Return undefined.
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return js_undefined();
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}
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+
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+ // c. Set O to ? O.[[GetPrototypeOf]]().
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object = TRY(object->internal_get_prototype_of());
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}
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- return js_undefined();
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-}
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-
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-// B.2.2.1.1 get Object.prototype.__proto__, https://tc39.es/ecma262/#sec-get-object.prototype.__proto__
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-JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::proto_getter)
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-{
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- auto object = TRY(vm.this_value().to_object(vm));
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- return TRY(object->internal_get_prototype_of());
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-}
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-
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-// B.2.2.1.2 set Object.prototype.__proto__, https://tc39.es/ecma262/#sec-set-object.prototype.__proto__
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-JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::proto_setter)
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-{
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- auto object = TRY(require_object_coercible(vm, vm.this_value()));
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-
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- auto proto = vm.argument(0);
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- if (!proto.is_object() && !proto.is_null())
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- return js_undefined();
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-
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- if (!object.is_object())
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- return js_undefined();
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-
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- auto status = TRY(object.as_object().internal_set_prototype_of(proto.is_object() ? &proto.as_object() : nullptr));
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- if (!status) {
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- // FIXME: Improve/contextualize error message
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- return vm.throw_completion<TypeError>(ErrorType::ObjectSetPrototypeOfReturnedFalse);
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- }
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+ // d. If O is null, return undefined.
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return js_undefined();
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}
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