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LibJS: Define constructor slots for describing how to read options

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This is an editorial change in the ECMA-402 spec. See:
a2beb66

We implement this change by introducing a virtual interface that all
Intl "service" objects must implement. A future patch will make use of
the virtualized RelevantExtensionKeys and ResolutionOptionDescriptors
accessors, and we will need to be able to use those slots from a generic
instance type.
This commit is contained in:
Timothy Flynn 2025-04-07 15:56:31 -04:00 • committed by Tim Flynn
commit 62793b1bd8
Notes: github-actions[bot] 2025-04-08 10:53:24 +00:00
29 changed files with 284 additions and 116 deletions
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19
Libraries/LibJS/Runtime/Intl/Collator.h
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@ -1,34 +1,29 @@
/*
* Copyright (c) 2022-2024, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2022-2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <LibJS/Runtime/Intl/CollatorCompareFunction.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Intl/IntlObject.h>
#include <LibUnicode/Collator.h>
namespace JS::Intl {
class Collator final : public Object {
JS_OBJECT(Collator, Object);
class Collator final : public IntlObject {
JS_OBJECT(Collator, IntlObject);
GC_DECLARE_ALLOCATOR(Collator);
public:
static constexpr auto relevant_extension_keys()
{
// 10.2.3 Internal slots, https://tc39.es/ecma402/#sec-intl-collator-internal-slots
// The value of the [[RelevantExtensionKeys]] internal slot is a List that must include the element "co", may include any or all of the elements "kf" and "kn", and must not include any other elements.
return AK::Array { "co"sv, "kf"sv, "kn"sv };
}
virtual ~Collator() override = default;
virtual ReadonlySpan<StringView> relevant_extension_keys() const override;
virtual ReadonlySpan<ResolutionOptionDescriptor> resolution_option_descriptors(VM&) const override;
String const& locale() const { return m_locale; }
void set_locale(String locale) { m_locale = move(locale); }