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LibJS: Implement Temporal.PlainDateTime.prototype.toPlainDate()

This commit is contained in:
Linus Groh 2021-07-23 00:39:18 +01:00
parent 61b2780853
commit 18fd0d4011
4 changed files with 28 additions and 0 deletions

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@ -348,6 +348,7 @@ namespace JS {
P(toLocaleString) \
P(toLocaleTimeString) \
P(toLowerCase) \
P(toPlainDate) \
P(toString) \
P(toTemporalInstant) \
P(toTimeString) \

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@ -5,6 +5,7 @@
*/
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/PlainDate.h>
#include <LibJS/Runtime/Temporal/PlainDateTime.h>
#include <LibJS/Runtime/Temporal/PlainDateTimePrototype.h>
@ -29,6 +30,7 @@ void PlainDateTimePrototype::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.valueOf, value_of, 0, attr);
define_native_function(vm.names.toPlainDate, to_plain_date, 0, attr);
}
static PlainDateTime* typed_this(GlobalObject& global_object)
@ -65,4 +67,17 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::value_of)
return {};
}
// 5.3.37 Temporal.PlainDateTime.prototype.toPlainDate ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplaindate
JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::to_plain_date)
{
// 1. Let dateTime be the this value.
// 2. Perform ? RequireInternalSlot(dateTime, [[InitializedTemporalDateTime]]).
auto* date_time = typed_this(global_object);
if (vm.exception())
return {};
// 3. Return ? CreateTemporalDate(dateTime.[[ISOYear]], dateTime.[[ISOMonth]], dateTime.[[ISODay]], dateTime.[[Calendar]]).
return create_temporal_date(global_object, date_time->iso_year(), date_time->iso_month(), date_time->iso_day(), date_time->calendar());
}
}

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@ -21,6 +21,7 @@ public:
private:
JS_DECLARE_NATIVE_FUNCTION(calendar_getter);
JS_DECLARE_NATIVE_FUNCTION(value_of);
JS_DECLARE_NATIVE_FUNCTION(to_plain_date);
};
}

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@ -0,0 +1,11 @@
describe("normal behavior", () => {
test("length is 0", () => {
expect(Temporal.PlainDateTime.prototype.toPlainDate).toHaveLength(0);
});
test("basic functionality", () => {
const plainDateTime = new Temporal.PlainDateTime(2021, 7, 23, 0, 32, 18, 123, 456, 789);
const plainDate = plainDateTime.toPlainDate();
expect(plainDate.equals(new Temporal.PlainDate(2021, 7, 23))).toBeTrue();
});
});