ladybird/Libraries/LibJS/Runtime/Intl/Collator.cpp
Timothy Flynn 62793b1bd8 LibJS: Define constructor slots for describing how to read options
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.
2025-04-08 06:50:40 -04:00

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1.8 KiB
C++

/*
* Copyright (c) 2022-2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Intl/Collator.h>
namespace JS::Intl {
GC_DEFINE_ALLOCATOR(Collator);
// 10 Collator Objects, https://tc39.es/ecma402/#collator-objects
Collator::Collator(Object& prototype)
: IntlObject(ConstructWithPrototypeTag::Tag, prototype)
{
}
void Collator::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_bound_compare);
}
// 10.2.3 Internal slots, https://tc39.es/ecma402/#sec-intl-collator-internal-slots
ReadonlySpan<StringView> Collator::relevant_extension_keys() const
{
// 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.
static constexpr AK::Array keys { "co"sv, "kf"sv, "kn"sv };
return keys;
}
// 10.2.3 Internal slots, https://tc39.es/ecma402/#sec-intl-collator-internal-slots
ReadonlySpan<ResolutionOptionDescriptor> Collator::resolution_option_descriptors(VM& vm) const
{
// The value of the [[ResolutionOptionDescriptors]] internal slot is « { [[Key]]: "co", [[Property]]: "collation" }, { [[Key]]: "kn", [[Property]]: "numeric", [[Type]]: boolean }, { [[Key]]: "kf", [[Property]]: "caseFirst", [[Values]]: « "upper", "lower", "false" » } ».
static constexpr AK::Array case_first_values { "upper"sv, "lower"sv, "false"sv };
static auto descriptors = to_array<ResolutionOptionDescriptor>({
{ .key = "co"sv, .property = vm.names.collation },
{ .key = "kn"sv, .property = vm.names.numeric, .type = OptionType::Boolean },
{ .key = "kf"sv, .property = vm.names.caseFirst, .values = case_first_values },
});
return descriptors;
}
}