2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
86 lines
3 KiB
C++
86 lines
3 KiB
C++
/*
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* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/IteratorOperations.h>
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#include <LibWeb/Bindings/HeadersIteratorPrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Fetch/HeadersIterator.h>
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namespace Web::Bindings {
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template<>
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void Intrinsics::create_web_prototype_and_constructor<HeadersIteratorPrototype>(JS::Realm& realm)
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{
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auto prototype = heap().allocate<HeadersIteratorPrototype>(realm, realm);
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m_prototypes.set("HeadersIterator"sv, prototype);
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}
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}
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namespace Web::Fetch {
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JS::NonnullGCPtr<HeadersIterator> HeadersIterator::create(Headers const& headers, JS::Object::PropertyKind iteration_kind)
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{
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return headers.heap().allocate<HeadersIterator>(headers.realm(), headers, iteration_kind);
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}
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HeadersIterator::HeadersIterator(Headers const& headers, JS::Object::PropertyKind iteration_kind)
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: PlatformObject(headers.realm())
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, m_headers(headers)
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, m_iteration_kind(iteration_kind)
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{
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}
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HeadersIterator::~HeadersIterator() = default;
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JS::ThrowCompletionOr<void> HeadersIterator::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::HeadersIteratorPrototype>(realm, "HeadersIterator"));
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return {};
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}
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void HeadersIterator::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(&m_headers);
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}
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// https://webidl.spec.whatwg.org/#es-iterable, Step 2
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JS::ThrowCompletionOr<JS::Object*> HeadersIterator::next()
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{
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// The value pairs to iterate over are the return value of running sort and combine with this’s header list.
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auto value_pairs_to_iterate_over = [&]() -> JS::ThrowCompletionOr<Vector<Fetch::Infrastructure::Header>> {
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auto headers_or_error = m_headers.m_header_list->sort_and_combine();
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if (headers_or_error.is_error())
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return vm().throw_completion<JS::InternalError>(JS::ErrorType::NotEnoughMemoryToAllocate);
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return headers_or_error.release_value();
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};
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auto pairs = TRY(value_pairs_to_iterate_over());
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if (m_index >= pairs.size())
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return create_iterator_result_object(vm(), JS::js_undefined(), true);
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auto const& pair = pairs[m_index++];
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switch (m_iteration_kind) {
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case JS::Object::PropertyKind::Key:
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return create_iterator_result_object(vm(), JS::PrimitiveString::create(vm(), StringView { pair.name }), false);
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case JS::Object::PropertyKind::Value:
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return create_iterator_result_object(vm(), JS::PrimitiveString::create(vm(), StringView { pair.value }), false);
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case JS::Object::PropertyKind::KeyAndValue: {
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auto array = JS::Array::create_from(realm(), { JS::PrimitiveString::create(vm(), StringView { pair.name }), JS::PrimitiveString::create(vm(), StringView { pair.value }) });
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return create_iterator_result_object(vm(), array, false);
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}
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default:
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VERIFY_NOT_REACHED();
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}
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}
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}
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