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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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9
Userland/Libraries/LibJS/Runtime/AsyncFromSyncIterator.cpp
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@@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, David Tuin <davidot@serenityos.org>
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@@ -10,16 +11,15 @@
namespace JS {
AsyncFromSyncIterator* AsyncFromSyncIterator::create(GlobalObject& global_object, Object* sync_iterator_record)
AsyncFromSyncIterator* AsyncFromSyncIterator::create(GlobalObject& global_object, Iterator sync_iterator_record)
{
return global_object.heap().allocate<AsyncFromSyncIterator>(global_object, global_object, sync_iterator_record);
}
AsyncFromSyncIterator::AsyncFromSyncIterator(GlobalObject& global_object, Object* sync_iterator_record)
AsyncFromSyncIterator::AsyncFromSyncIterator(GlobalObject& global_object, Iterator sync_iterator_record)
: Object(*global_object.async_from_sync_iterator_prototype())
, m_sync_iterator_record(sync_iterator_record)
{
VERIFY(m_sync_iterator_record);
}
void AsyncFromSyncIterator::initialize(GlobalObject& global_object)
@@ -30,7 +30,8 @@ void AsyncFromSyncIterator::initialize(GlobalObject& global_object)
void AsyncFromSyncIterator::visit_edges(Cell::Visitor& visitor)
{
Object::visit_edges(visitor);
visitor.visit(m_sync_iterator_record);
visitor.visit(m_sync_iterator_record.iterator);
visitor.visit(m_sync_iterator_record.next_method);
}
}