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LibJS: Implement Intl.DateTimeFormat.prototype.formatToParts

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Timothy Flynn 2021-12-07 21:49:29 -05:00 • committed by Linus Groh
parent adaf5985a4
commit 1e68e7f129
5 changed files with 345 additions and 0 deletions
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37
Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
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@ -6,6 +6,7 @@
#include <AK/NumericLimits.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/Intl/DateTimeFormat.h>
#include <LibJS/Runtime/Intl/NumberFormat.h>
@ -1066,6 +1067,42 @@ ThrowCompletionOr<String> format_date_time(GlobalObject& global_object, DateTime
return result.build();
}
// 11.1.10 FormatDateTimeToParts ( dateTimeFormat, x ), https://tc39.es/ecma402/#sec-formatdatetimetoparts
ThrowCompletionOr<Array*> format_date_time_to_parts(GlobalObject& global_object, DateTimeFormat& date_time_format, Value time)
{
auto& vm = global_object.vm();
// 1. Let parts be ? PartitionDateTimePattern(dateTimeFormat, x).
auto parts = TRY(partition_date_time_pattern(global_object, date_time_format, time));
// 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]] } 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. Perform ! CreateDataProperty(result, ! ToString(n), O).
MUST(result->create_data_property_or_throw(n, object));
// e. Increment n by 1.
++n;
}
// 5. Return result.
return result;
}
// 11.1.14 ToLocalTime ( t, calendar, timeZone ), https://tc39.es/ecma402/#sec-tolocaltime
ThrowCompletionOr<LocalTime> to_local_time(GlobalObject& global_object, double time, StringView calendar, [[maybe_unused]] StringView time_zone)
{