diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.cpp index d532c7887b..b6508e9061 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.cpp +++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.cpp @@ -1,9 +1,11 @@ /* * Copyright (c) 2021, Linus Groh + * Copyright (c) 2021, Luke Wilde * * SPDX-License-Identifier: BSD-2-Clause */ +#include #include #include #include @@ -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())); +} + } diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.h b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.h index 16c13d07b6..145484b904 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.h +++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthConstructor.h @@ -25,6 +25,7 @@ private: virtual bool has_constructor() const override { return true; } JS_DECLARE_NATIVE_FUNCTION(from); + JS_DECLARE_NATIVE_FUNCTION(compare); }; } diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainYearMonth/PlainYearMonth.compare.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainYearMonth/PlainYearMonth.compare.js new file mode 100644 index 0000000000..789845e8d2 --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainYearMonth/PlainYearMonth.compare.js @@ -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); + }); +});