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LibJS: Implement temporal AO SnapshotOwnProperties

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Shannon Booth 2024-01-04 20:00:25 +13:00 • committed by Andrew Kaster
parent 107fa1fdb8
commit d2710ad73f
2 changed files with 18 additions and 0 deletions
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17
Userland/Libraries/LibJS/Runtime/Object.cpp
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@ -487,6 +487,23 @@ ThrowCompletionOr<void> Object::copy_data_properties(VM& vm, Value source, HashT
return {};
}
// 14.7 SnapshotOwnProperties ( source, proto [ , excludedKeys [ , excludedValues ] ] ), https://tc39.es/proposal-temporal/#sec-snapshotownproperties
ThrowCompletionOr<NonnullGCPtr<Object>> Object::snapshot_own_properties(VM& vm, GCPtr<Object> prototype, HashTable<PropertyKey> const& excluded_keys, HashTable<Value> const& excluded_values)
{
auto& realm = *vm.current_realm();
// 1. Let copy be OrdinaryObjectCreate(proto).
auto copy = Object::create(realm, prototype);
// 2. If excludedKeys is not present, set excludedKeys to « ».
// 3. If excludedValues is not present, set excludedValues to « ».
// 4. Perform ? CopyDataProperties(copy, source, excludedKeys, excludedValues).
TRY(copy->copy_data_properties(vm, Value { this }, excluded_keys, excluded_values));
// 5. Return copy.
return copy;
}
// 7.3.27 PrivateElementFind ( O, P ), https://tc39.es/ecma262/#sec-privateelementfind
PrivateElement* Object::private_element_find(PrivateName const& name)
{

1
Userland/Libraries/LibJS/Runtime/Object.h
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@ -119,6 +119,7 @@ public:
ThrowCompletionOr<bool> test_integrity_level(IntegrityLevel) const;
ThrowCompletionOr<MarkedVector<Value>> enumerable_own_property_names(PropertyKind kind) const;
ThrowCompletionOr<void> copy_data_properties(VM&, Value source, HashTable<PropertyKey> const& excluded_keys, HashTable<JS::Value> const& excluded_values = {});
ThrowCompletionOr<NonnullGCPtr<Object>> snapshot_own_properties(VM&, GCPtr<Object> prototype, HashTable<PropertyKey> const& excluded_keys = {}, HashTable<Value> const& excluded_values = {});
PrivateElement* private_element_find(PrivateName const& name);
ThrowCompletionOr<void> private_field_add(PrivateName const& name, Value value);