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LibJS: Implement Temporal.PlainYearMonth.compare

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Luke Wilde 2021-09-09 04:57:08 +01:00 • committed by Linus Groh
parent 092ec0cecf
commit 90ada407db
3 changed files with 35 additions and 0 deletions
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20
Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.cpp
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@ -1,9 +1,11 @@
/*
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/AbstractOperations.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
@ -31,6 +33,7 @@ void PlainYearMonthConstructor::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.from, from, 1, attr);
define_native_function(vm.names.compare, compare, 2, attr);
}
// 9.1.1 Temporal.PlainYearMonth ( isoYear, isoMonth [ , calendarLike [ , referenceISODay ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth
@ -119,4 +122,21 @@ JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthConstructor::from)
return to_temporal_year_month(global_object, item, options);
}
// 9.2.3 Temporal.PlainYearMonth.compare ( one, two ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.compare
JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthConstructor::compare)
{
// 1. Set one to ? ToTemporalYearMonth(one).
auto* one = to_temporal_year_month(global_object, vm.argument(0));
if (vm.exception())
return {};
// 2. Set two to ? ToTemporalYearMonth(one).
auto* two = to_temporal_year_month(global_object, vm.argument(1));
if (vm.exception())
return {};
// 3. Return 𝔽(! CompareISODate(one.[[ISOYear]], one.[[ISOMonth]], one.[[ISODay]], two.[[ISOYear]], two.[[ISOMonth]], two.[[ISODay]])).
return Value(compare_iso_date(one->iso_year(), one->iso_month(), one->iso_day(), two->iso_year(), two->iso_month(), two->iso_day()));
}
}

1
Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.h
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@ -25,6 +25,7 @@ private:
virtual bool has_constructor() const override { return true; }
JS_DECLARE_NATIVE_FUNCTION(from);
JS_DECLARE_NATIVE_FUNCTION(compare);
};
}

14
Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainYearMonth/PlainYearMonth.compare.js Normal file
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@ -0,0 +1,14 @@
describe("correct behavior", () => {
test("length is 2", () => {
expect(Temporal.PlainYearMonth.compare).toHaveLength(2);
});
test("basic functionality", () => {
const plainYearMonth1 = new Temporal.PlainYearMonth(2021, 8);
expect(Temporal.PlainYearMonth.compare(plainYearMonth1, plainYearMonth1)).toBe(0);
const plainYearMonth2 = new Temporal.PlainYearMonth(2021, 9);
expect(Temporal.PlainYearMonth.compare(plainYearMonth2, plainYearMonth2)).toBe(0);
expect(Temporal.PlainYearMonth.compare(plainYearMonth1, plainYearMonth2)).toBe(-1);
expect(Temporal.PlainYearMonth.compare(plainYearMonth2, plainYearMonth1)).toBe(1);
});
});