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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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26
Libraries/LibJS/Runtime/Intl/DurationFormat.cpp
View file

@ -8,15 +8,12 @@
#include <AK/GenericShorthands.h>
#include <AK/StringBuilder.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/DurationFormat.h>
#include <LibJS/Runtime/Intl/ListFormat.h>
#include <LibJS/Runtime/Intl/ListFormatConstructor.h>
#include <LibJS/Runtime/Intl/MathematicalValue.h>
#include <LibJS/Runtime/Intl/NumberFormatConstructor.h>
#include <LibJS/Runtime/Intl/PluralRules.h>
#include <LibJS/Runtime/Intl/PluralRulesConstructor.h>
#include <LibJS/Runtime/Intl/RelativeTimeFormat.h>
#include <LibJS/Runtime/VM.h>
#include <LibJS/Runtime/ValueInlines.h>
namespace JS::Intl {
@ -25,10 +22,29 @@ GC_DEFINE_ALLOCATOR(DurationFormat);
// 13 DurationFormat Objects, https://tc39.es/ecma402/#durationformat-objects
DurationFormat::DurationFormat(Object& prototype)
: Object(ConstructWithPrototypeTag::Tag, prototype)
: IntlObject(ConstructWithPrototypeTag::Tag, prototype)
{
}
// 13.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.DurationFormat-internal-slots
ReadonlySpan<StringView> DurationFormat::relevant_extension_keys() const
{
// The value of the [[RelevantExtensionKeys]] internal slot is « "nu" ».
static constexpr AK::Array keys { "nu"sv };
return keys;
}
// 13.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.DurationFormat-internal-slots
ReadonlySpan<ResolutionOptionDescriptor> DurationFormat::resolution_option_descriptors(VM& vm) const
{
// The value of the [[ResolutionOptionDescriptors]] internal slot is « { [[Key]]: "nu", [[Property]]: "numberingSystem" } ».
static auto descriptors = to_array<ResolutionOptionDescriptor>({
{ .key = "nu"sv, .property = vm.names.numberingSystem },
});
return descriptors;
}
DurationFormat::Style DurationFormat::style_from_string(StringView style)
{
if (style == "long"sv)