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https://github.com/RGBCube/serenity
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b99cc7d050
This is a continuation of the previous two commits. As allocating a JS cell already primarily involves a realm instead of a global object, and we'll need to pass one to the allocate() function itself eventually (it's bridged via the global object right now), the create() functions need to receive a realm as well. The plan is for this to be the highest-level function that actually receives a realm and passes it around, AOs on an even higher level will use the "current realm" concept via VM::current_realm() as that's what the spec assumes; passing around realms (or global objects, for that matter) on higher AO levels is pointless and unlike for allocating individual objects, which may happen outside of regular JS execution, we don't need control over the specific realm that is being used there.
56 lines
2.1 KiB
C++
56 lines
2.1 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/HeadersIteratorWrapper.h>
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#include <LibWeb/Bindings/Wrapper.h>
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#include <LibWeb/Fetch/HeadersIterator.h>
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namespace Web::Fetch {
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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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auto& global_object = wrapper()->global_object();
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auto& vm = global_object.vm();
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auto& realm = *global_object.associated_realm();
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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>(global_object, 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(global_object, 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(global_object, JS::js_string(vm, StringView { pair.name }), false);
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case JS::Object::PropertyKind::Value:
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return create_iterator_result_object(global_object, JS::js_string(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::js_string(vm, StringView { pair.name }), JS::js_string(vm, StringView { pair.value }) });
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return create_iterator_result_object(global_object, 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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void HeadersIterator::visit_edges(JS::Cell::Visitor& visitor)
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{
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visitor.visit(m_headers.wrapper());
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}
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}
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