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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:
https://github.com/tc39/ecma402/commit/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
parent 19ce186f97
commit 62793b1bd8
Notes: github-actions[bot] 2025-04-08 10:53:24 +00:00 
Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/62793b1bd88
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4275
29 changed files with 284 additions and 116 deletions
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19
Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.h
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@@ -6,32 +6,25 @@
#pragma once
#include <AK/Array.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Intl/IntlObject.h>
#include <LibUnicode/Locale.h>
#include <LibUnicode/NumberFormat.h>
#include <LibUnicode/RelativeTimeFormat.h>
namespace JS::Intl {
class RelativeTimeFormat final : public Object {
JS_OBJECT(RelativeTimeFormat, Object);
class RelativeTimeFormat final : public IntlObject {
JS_OBJECT(RelativeTimeFormat, IntlObject);
GC_DECLARE_ALLOCATOR(RelativeTimeFormat);
public:
static constexpr auto relevant_extension_keys()
{
// 18.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat-internal-slots
// The value of the [[RelevantExtensionKeys]] internal slot is « "nu" ».
return AK::Array { "nu"sv };
}
virtual ~RelativeTimeFormat() 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); }