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LibJS: Convert create_immutable_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 19:00:06 +01:00
parent 4baf3a91e8
commit 2691c65639
10 changed files with 29 additions and 22 deletions
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14
Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
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@ -64,13 +64,15 @@ ThrowCompletionOr<void> GlobalEnvironment::create_mutable_binding(GlobalObject&
}
// 9.1.1.4.3 CreateImmutableBinding ( N, S ), https://tc39.es/ecma262/#sec-global-environment-records-createimmutablebinding-n-s
void GlobalEnvironment::create_immutable_binding(GlobalObject& global_object, FlyString const& name, bool strict)
ThrowCompletionOr<void> GlobalEnvironment::create_immutable_binding(GlobalObject& global_object, FlyString const& name, bool strict)
{
if (MUST(m_declarative_record->has_binding(name))) {
global_object.vm().throw_exception<TypeError>(global_object, ErrorType::FixmeAddAnErrorString);
return;
}
m_declarative_record->create_immutable_binding(global_object, name, strict);
// 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.CreateImmutableBinding(N, S).
return m_declarative_record->create_immutable_binding(global_object, name, strict);
}
// 9.1.1.4.4 InitializeBinding ( N, V ), https://tc39.es/ecma262/#sec-global-environment-records-initializebinding-n-v