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LibJS: Implement Intl.RelativeTimeFormat.prototype.formatToParts

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Timothy Flynn 2022-01-26 22:44:01 -05:00 • committed by Linus Groh
parent 9c5d7e515c
commit a2e791277e
5 changed files with 210 additions and 0 deletions
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43
Userland/Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.cpp
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@ -6,6 +6,7 @@
#include <AK/StringBuilder.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/NumberFormat.h>
#include <LibJS/Runtime/Intl/NumberFormatConstructor.h>
@ -313,4 +314,46 @@ ThrowCompletionOr<String> format_relative_time(GlobalObject& global_object, Rela
return result.build();
}
// 17.1.6 FormatRelativeTimeToParts ( relativeTimeFormat, value, unit ), https://tc39.es/ecma402/#sec-FormatRelativeTimeToParts
ThrowCompletionOr<Array*> format_relative_time_to_parts(GlobalObject& global_object, RelativeTimeFormat& relative_time_format, double value, StringView unit)
{
auto& vm = global_object.vm();
// 1. Let parts be ? PartitionRelativeTimePattern(relativeTimeFormat, value, unit).
auto parts = TRY(partition_relative_time_pattern(global_object, relative_time_format, value, unit));
// 2. Let result be ArrayCreate(0).
auto* result = MUST(Array::create(global_object, 0));
// 3. Let n be 0.
size_t n = 0;
// 4. For each Record { [[Type]], [[Value]], [[Unit]] } part in parts, do
for (auto& part : parts) {
// a. Let O be OrdinaryObjectCreate(%Object.prototype%).
auto* object = Object::create(global_object, global_object.object_prototype());
// b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
MUST(object->create_data_property_or_throw(vm.names.type, js_string(vm, part.type)));
// c. Perform ! CreateDataPropertyOrThrow(O, "value", part.[[Value]]).
MUST(object->create_data_property_or_throw(vm.names.value, js_string(vm, move(part.value))));
// d. If part.[[Unit]] is not empty, then
if (!part.unit.is_empty()) {
// i. Perform ! CreateDataPropertyOrThrow(O, "unit", part.[[Unit]]).
MUST(object->create_data_property_or_throw(vm.names.unit, js_string(vm, part.unit)));
}
// e. Perform ! CreateDataPropertyOrThrow(result, ! ToString(n), O).
MUST(result->create_data_property_or_throw(n, object));
// f. Increment n by 1.
++n;
}
// 5. Return result.
return result;
}
}