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LibJS: Implement Temporal.Calendar.prototype.month
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5 changed files with 60 additions and 0 deletions
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@ -453,4 +453,19 @@ i32 iso_year(Object& temporal_object)
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VERIFY_NOT_REACHED();
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}
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// 12.1.42 ISOMonth ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonth
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u8 iso_month(Object& temporal_object)
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{
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// 1. Assert: temporalObject has an [[ISOMonth]] internal slot.
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// NOTE: Asserted by the VERIFY_NOT_REACHED at the end
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// 2. Return 𝔽(temporalObject.[[ISOMonth]]).
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// TODO: add the rest of the builtins with a [[ISOMonth]] slot (PlainYearMonth, PlainMonthDay)
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if (is<PlainDate>(temporal_object))
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return static_cast<PlainDate&>(temporal_object).iso_month();
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if (is<PlainDateTime>(temporal_object))
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return static_cast<PlainDateTime&>(temporal_object).iso_month();
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VERIFY_NOT_REACHED();
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}
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}
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@ -46,5 +46,6 @@ String build_iso_month_code(i32 month);
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double resolve_iso_month(GlobalObject&, Object& fields);
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Optional<TemporalDate> iso_date_from_fields(GlobalObject&, Object& fields, Object& options);
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i32 iso_year(Object& temporal_object);
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u8 iso_month(Object& temporal_object);
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}
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@ -32,6 +32,7 @@ void CalendarPrototype::initialize(GlobalObject& global_object)
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.dateFromFields, date_from_fields, 2, attr);
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define_native_function(vm.names.year, year, 1, attr);
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define_native_function(vm.names.month, month, 1, attr);
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define_native_function(vm.names.toString, to_string, 0, attr);
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define_native_function(vm.names.toJSON, to_json, 0, attr);
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}
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@ -120,6 +121,37 @@ JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::year)
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return Value(iso_year(temporal_date_like.as_object()));
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}
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// 12.4.10 Temporal.Calendar.prototype.month ( temporalDateLike ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.month
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// NOTE: This is the minimum month implementation for engines without ECMA-402.
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JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::month)
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{
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// 1. Let calendar be the this value.
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// 2. Perform ? RequireInternalSlot(calendar, [[InitializedTemporalCalendar]]).
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auto* calendar = typed_this(global_object);
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if (vm.exception())
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return {};
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// 3. Assert: calendar.[[Identifier]] is "iso8601".
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VERIFY(calendar->identifier() == "iso8601"sv);
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// 4. If Type(temporalDateLike) is Object and temporalDateLike has an [[InitializedTemporalMonthDay]] internal slot, then
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// a. Throw a TypeError exception.
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// TODO
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auto temporal_date_like = vm.argument(0);
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// 5. If Type(temporalDateLike) is not Object or temporalDateLike does not have an [[InitializedTemporalDate]] or [[InitializedTemporalYearMonth]] internal slot, then
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// TODO PlainYearMonth objects
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if (!temporal_date_like.is_object() || !is<PlainDate>(temporal_date_like.as_object())) {
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// a. Set temporalDateLike to ? ToTemporalDate(temporalDateLike).
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temporal_date_like = to_temporal_date(global_object, temporal_date_like);
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if (vm.exception())
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return {};
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}
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// 6. Return ! ISOMonth(temporalDateLike).
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return Value(iso_month(temporal_date_like.as_object()));
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}
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// 12.4.23 Temporal.Calendar.prototype.toString ( ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.tostring
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JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::to_string)
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{
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@ -22,6 +22,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(id_getter);
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JS_DECLARE_NATIVE_FUNCTION(date_from_fields);
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JS_DECLARE_NATIVE_FUNCTION(year);
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JS_DECLARE_NATIVE_FUNCTION(month);
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JS_DECLARE_NATIVE_FUNCTION(to_string);
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JS_DECLARE_NATIVE_FUNCTION(to_json);
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};
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