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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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18
Libraries/LibJS/Runtime/Intl/DisplayNames.cpp
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@ -4,9 +4,9 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/DisplayNames.h>
#include <LibJS/Runtime/VM.h>
namespace JS::Intl {
@ -14,10 +14,24 @@ GC_DEFINE_ALLOCATOR(DisplayNames);
// 12 DisplayNames Objects, https://tc39.es/ecma402/#intl-displaynames-objects
DisplayNames::DisplayNames(Object& prototype)
: Object(ConstructWithPrototypeTag::Tag, prototype)
: IntlObject(ConstructWithPrototypeTag::Tag, prototype)
{
}
// 12.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.DisplayNames-internal-slots
ReadonlySpan<StringView> DisplayNames::relevant_extension_keys() const
{
// The value of the [[RelevantExtensionKeys]] internal slot is « ».
return {};
}
// 12.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.DisplayNames-internal-slots
ReadonlySpan<ResolutionOptionDescriptor> DisplayNames::resolution_option_descriptors(VM&) const
{
// The value of the [[ResolutionOptionDescriptors]] internal slot is « ».
return {};
}
void DisplayNames::set_type(StringView type)
{
if (type == "language"sv)