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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
namespace runtime {
extern transitioning runtime
ObjectIsExtensible(implicit context: Context)(JSAny): JSAny;
extern transitioning runtime
JSReceiverPreventExtensionsThrow(implicit context: Context)(JSReceiver):
JSAny;
extern transitioning runtime
JSReceiverPreventExtensionsDontThrow(implicit context: Context)(JSReceiver):
JSAny;
extern transitioning runtime
JSReceiverGetPrototypeOf(implicit context: Context)(JSReceiver): JSAny;
extern transitioning runtime
JSReceiverSetPrototypeOfThrow(implicit context: Context)(JSReceiver, JSAny):
JSAny;
extern transitioning runtime
JSReceiverSetPrototypeOfDontThrow(implicit context:
Context)(JSReceiver, JSAny): JSAny;
extern transitioning runtime ObjectCreate(implicit context:
Context)(JSAny, JSAny): JSAny;
} // namespace runtime
namespace object {
transitioning macro
ObjectIsExtensibleImpl(implicit context: Context)(object: JSAny): JSAny {
const objectJSReceiver = Cast<JSReceiver>(object) otherwise return False;
const objectJSProxy = Cast<JSProxy>(objectJSReceiver)
otherwise return runtime::ObjectIsExtensible(objectJSReceiver);
return proxy::ProxyIsExtensible(objectJSProxy);
}
transitioning macro
ObjectPreventExtensionsThrow(implicit context: Context)(object: JSAny):
JSAny {
const objectJSReceiver = Cast<JSReceiver>(object) otherwise return object;
const objectJSProxy = Cast<JSProxy>(objectJSReceiver)
otherwise return runtime::JSReceiverPreventExtensionsThrow(
objectJSReceiver);
proxy::ProxyPreventExtensions(objectJSProxy, True);
return objectJSReceiver;
}
transitioning macro
ObjectPreventExtensionsDontThrow(implicit context: Context)(object: JSAny):
JSAny {
const objectJSReceiver = Cast<JSReceiver>(object) otherwise return False;
const objectJSProxy = Cast<JSProxy>(objectJSReceiver)
otherwise return runtime::JSReceiverPreventExtensionsDontThrow(
objectJSReceiver);
return proxy::ProxyPreventExtensions(objectJSProxy, False);
}
transitioning macro
ObjectGetPrototypeOfImpl(implicit context: Context)(object: JSAny): JSAny {
const objectJSReceiver: JSReceiver = ToObject_Inline(context, object);
return object::JSReceiverGetPrototypeOf(objectJSReceiver);
}
transitioning macro
JSReceiverGetPrototypeOf(implicit context: Context)(object: JSReceiver):
JSAny {
const objectJSProxy = Cast<JSProxy>(object)
otherwise return runtime::JSReceiverGetPrototypeOf(object);
return proxy::ProxyGetPrototypeOf(objectJSProxy);
}
transitioning macro
ObjectSetPrototypeOfThrow(implicit context: Context)(
object: JSAny, proto: JSReceiver|Null): JSAny {
const objectJSReceiver = Cast<JSReceiver>(object) otherwise return object;
const objectJSProxy = Cast<JSProxy>(objectJSReceiver)
otherwise return runtime::JSReceiverSetPrototypeOfThrow(
objectJSReceiver, proto);
proxy::ProxySetPrototypeOf(objectJSProxy, proto, True);
return objectJSReceiver;
}
transitioning macro
ObjectSetPrototypeOfDontThrow(implicit context: Context)(
object: JSAny, proto: JSReceiver|Null): JSAny {
const objectJSReceiver = Cast<JSReceiver>(object) otherwise return False;
const objectJSProxy = Cast<JSProxy>(objectJSReceiver)
otherwise return runtime::JSReceiverSetPrototypeOfDontThrow(
objectJSReceiver, proto);
return proxy::ProxySetPrototypeOf(objectJSProxy, proto, False);
}
transitioning builtin CreateObjectWithoutProperties(
implicit context: Context)(prototype: JSAny): JSAny {
const nativeContext = LoadNativeContext(context);
try {
let map: Map;
let properties: NameDictionary|EmptyFixedArray;
typeswitch (prototype) {
case (Null): {
map = UnsafeCast<Map>(
nativeContext
[NativeContextSlot::SLOW_OBJECT_WITH_NULL_PROTOTYPE_MAP]);
properties = AllocateNameDictionary(kNameDictionaryInitialCapacity);
}
case (prototype: JSReceiver): {
properties = kEmptyFixedArray;
const objectFunction = UnsafeCast<JSFunction>(
nativeContext[NativeContextSlot::OBJECT_FUNCTION_INDEX]);
map = UnsafeCast<Map>(objectFunction.prototype_or_initial_map);
if (prototype != map.prototype) {
const prototypeInfo =
prototype.map.PrototypeInfo() otherwise Runtime;
typeswitch (prototypeInfo.object_create_map) {
case (Undefined): {
goto Runtime;
}
case (weak_map: Weak<Map>): {
map = WeakToStrong(weak_map) otherwise Runtime;
}
}
}
}
case (JSAny): {
goto Runtime;
}
}
return AllocateJSObjectFromMap(map, properties);
}
label Runtime deferred {
return runtime::ObjectCreate(prototype, Undefined);
}
}
// ES6 section 19.1.2.11 Object.isExtensible ( O )
transitioning javascript builtin
ObjectIsExtensible(js-implicit context: NativeContext)(object: JSAny): JSAny {
return object::ObjectIsExtensibleImpl(object);
}
// ES6 section 19.1.2.18 Object.preventExtensions ( O )
transitioning javascript builtin
ObjectPreventExtensions(js-implicit context: NativeContext)(object: JSAny):
JSAny {
return object::ObjectPreventExtensionsThrow(object);
}
// ES6 section 19.1.2.9 Object.getPrototypeOf ( O )
transitioning javascript builtin
ObjectGetPrototypeOf(js-implicit context: NativeContext)(object: JSAny):
JSAny {
return object::ObjectGetPrototypeOfImpl(object);
}
// ES6 section 19.1.2.21 Object.setPrototypeOf ( O, proto )
transitioning javascript builtin ObjectSetPrototypeOf(
js-implicit context: NativeContext)(object: JSAny, proto: JSAny): JSAny {
// 1. Set O to ? RequireObjectCoercible(O).
RequireObjectCoercible(object, 'Object.setPrototypeOf');
// 2. If Type(proto) is neither Object nor Null, throw a TypeError
// exception.
// 3. If Type(O) is not Object, return O.
// 4. Let status be ? O.[[SetPrototypeOf]](proto).
// 5. If status is false, throw a TypeError exception.
// 6. Return O.
typeswitch (proto) {
case (proto: JSReceiver|Null): {
return object::ObjectSetPrototypeOfThrow(object, proto);
}
case (JSAny): {
ThrowTypeError(MessageTemplate::kProtoObjectOrNull, proto);
}
}
}
} // namespace object
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