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LibJS: Convert create_mutable_binding() to ThrowCompletionOr

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Also add spec step comments to it while we're here.
This commit is contained in:
Linus Groh 2021-10-09 18:53:25 +01:00
parent fbb176c926
commit 4baf3a91e8
10 changed files with 43 additions and 39 deletions
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18
Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
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@ -52,13 +52,15 @@ ThrowCompletionOr<bool> GlobalEnvironment::has_binding(FlyString const& name, Op
}
// 9.1.1.4.2 CreateMutableBinding ( N, D ), https://tc39.es/ecma262/#sec-global-environment-records-createmutablebinding-n-d
void GlobalEnvironment::create_mutable_binding(GlobalObject& global_object, FlyString const& name, bool can_be_deleted)
ThrowCompletionOr<void> GlobalEnvironment::create_mutable_binding(GlobalObject& global_object, FlyString const& name, bool can_be_deleted)
{
if (MUST(m_declarative_record->has_binding(name))) {
global_object.vm().throw_exception<TypeError>(global_object, ErrorType::FixmeAddAnErrorString);
return;
}
m_declarative_record->create_mutable_binding(global_object, name, can_be_deleted);
// 1. Let DclRec be envRec.[[DeclarativeRecord]].
// 2. If DclRec.HasBinding(N) is true, throw a TypeError exception.
if (MUST(m_declarative_record->has_binding(name)))
return vm().throw_completion<TypeError>(global_object, ErrorType::FixmeAddAnErrorString);
// 3. Return DclRec.CreateMutableBinding(N, D).
return m_declarative_record->create_mutable_binding(global_object, name, can_be_deleted);
}
// 9.1.1.4.3 CreateImmutableBinding ( N, S ), https://tc39.es/ecma262/#sec-global-environment-records-createimmutablebinding-n-s
@ -179,8 +181,8 @@ void GlobalEnvironment::create_global_var_binding(FlyString const& name, bool ca
return;
auto extensible = extensible_or_error.release_value();
if (!has_property && extensible) {
m_object_record->create_mutable_binding(m_object_record->global_object(), name, can_be_deleted);
if (vm.exception())
auto result = m_object_record->create_mutable_binding(m_object_record->global_object(), name, can_be_deleted);
if (result.is_error())
return;
m_object_record->initialize_binding(m_object_record->global_object(), name, js_undefined());
if (vm.exception())