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LibJS: Add support for public fields in classes

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davidot 2021-08-28 17:11:05 +02:00 • committed by Linus Groh
parent 3b6a8d1d53
commit def8b44c40
9 changed files with 265 additions and 11 deletions
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18
Userland/Libraries/LibJS/Runtime/VM.cpp
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@ -457,6 +457,16 @@ static void append_bound_and_passed_arguments(MarkedValueList& arguments, Vector
}
}
// 7.3.32 InitializeInstanceElements ( O, constructor ), https://tc39.es/ecma262/#sec-initializeinstanceelements
void VM::initialize_instance_elements(Object& object, FunctionObject& constructor)
{
for (auto& field : constructor.fields()) {
field.define_field(*this, object);
if (exception())
return;
}
}
Value VM::construct(FunctionObject& function, FunctionObject& new_target, Optional<MarkedValueList> arguments)
{
auto& global_object = function.global_object();
@ -494,6 +504,14 @@ Value VM::construct(FunctionObject& function, FunctionObject& new_target, Option
// If we are a Derived constructor, |this| has not been constructed before super is called.
callee_context.this_value = this_argument;
if (function.constructor_kind() == FunctionObject::ConstructorKind::Base) {
VERIFY(this_argument.is_object());
initialize_instance_elements(this_argument.as_object(), function);
if (exception())
return {};
}
auto result = function.construct(new_target);
pop_execution_context();