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LibJS: Implement proper Iterator records

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Instead of using plain objects as Iterator records, causes confusion
about the object itself actually being its [[Iterator]] slot, and
requires non-standard type conversion shenanigans fpr the [[NextValue]]
and [[Done]] internal slots,  implement a proper Iterator record struct
and use it throughout.

Also annotate the remaining Iterator AOs with spec comments while we're
here.
This commit is contained in:
Linus Groh 2022-01-09 19:12:24 +01:00
parent e141f1e976
commit 09a11fa6ea
17 changed files with 337 additions and 209 deletions
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6
Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
@ -54,7 +54,7 @@ ThrowCompletionOr<MarkedValueList> iterable_to_list_of_type(GlobalObject& global
// 4. Repeat, while next is not false,
while (next) {
// a. Set next to ? IteratorStep(iteratorRecord).
auto* iterator_result = TRY(iterator_step(global_object, *iterator_record));
auto* iterator_result = TRY(iterator_step(global_object, iterator_record));
next = iterator_result;
// b. If next is not false, then
@ -66,7 +66,7 @@ ThrowCompletionOr<MarkedValueList> iterable_to_list_of_type(GlobalObject& global
// 1. Let completion be ThrowCompletion(a newly created TypeError object).
auto completion = vm.throw_completion<TypeError>(global_object, ErrorType::IterableToListOfTypeInvalidValue, next_value.to_string_without_side_effects());
// 2. Return ? IteratorClose(iteratorRecord, completion).
return iterator_close(*iterator_record, move(completion));
return iterator_close(global_object, iterator_record, move(completion));
}
// iii. Append nextValue to the end of the List values.
values.append(next_value);