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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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13
Libraries/LibJS/Runtime/Intl/DisplayNames.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2021-2024, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2021-2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -9,14 +9,14 @@
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Intl/IntlObject.h>
#include <LibUnicode/DisplayNames.h>
#include <LibUnicode/Locale.h>
namespace JS::Intl {
class DisplayNames final : public Object {
JS_OBJECT(DisplayNames, Object);
class DisplayNames final : public IntlObject {
JS_OBJECT(DisplayNames, IntlObject);
GC_DECLARE_ALLOCATOR(DisplayNames);
enum class Type {
@ -38,6 +38,9 @@ class DisplayNames final : public Object {
public:
virtual ~DisplayNames() 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); }
@ -59,7 +62,7 @@ public:
StringView language_display_string() const { return Unicode::language_display_to_string(*m_language_display); }
private:
DisplayNames(Object& prototype);
explicit DisplayNames(Object& prototype);
String m_locale; // [[Locale]]
Unicode::Style m_style { Unicode::Style::Long }; // [[Style]]