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1a386e78c3
And the simple Temporal.PlainMonthDay.prototype getters, so that the constructed Temporal.PlainMonthDay may actually be validated.
55 lines
2 KiB
C++
55 lines
2 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2024, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/Temporal/AbstractOperations.h>
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#include <LibJS/Runtime/Temporal/Instant.h>
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#include <LibJS/Runtime/Temporal/PlainDateTime.h>
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namespace JS::Temporal {
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// 5.5.3 CombineISODateAndTimeRecord ( isoDate, time ), https://tc39.es/proposal-temporal/#sec-temporal-combineisodateandtimerecord
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ISODateTime combine_iso_date_and_time_record(ISODate iso_date, Time time)
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{
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// 1. NOTE: time.[[Days]] is ignored.
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// 2. Return ISO Date-Time Record { [[ISODate]]: isoDate, [[Time]]: time }.
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return { .iso_date = iso_date, .time = time };
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}
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// nsMinInstant - nsPerDay
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static auto const DATETIME_NANOSECONDS_MIN = "-8640000086400000000000"_sbigint;
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// nsMaxInstant + nsPerDay
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static auto const DATETIME_NANOSECONDS_MAX = "8640000086400000000000"_sbigint;
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// 5.5.4 ISODateTimeWithinLimits ( isoDateTime ), https://tc39.es/proposal-temporal/#sec-temporal-isodatetimewithinlimits
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bool iso_date_time_within_limits(ISODateTime iso_date_time)
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{
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// 1. If abs(ISODateToEpochDays(isoDateTime.[[ISODate]].[[Year]], isoDateTime.[[ISODate]].[[Month]] - 1, isoDateTime.[[ISODate]].[[Day]])) > 10**8 + 1, return false.
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if (fabs(iso_date_to_epoch_days(iso_date_time.iso_date.year, iso_date_time.iso_date.month - 1, iso_date_time.iso_date.day)) > 100000001)
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return false;
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// 2. Let ns be ℝ(GetUTCEpochNanoseconds(isoDateTime)).
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auto nanoseconds = get_utc_epoch_nanoseconds(iso_date_time);
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// 3. If ns ≤ nsMinInstant - nsPerDay, then
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if (nanoseconds <= DATETIME_NANOSECONDS_MIN) {
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// a. Return false.
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return false;
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}
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// 4. If ns ≥ nsMaxInstant + nsPerDay, then
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if (nanoseconds >= DATETIME_NANOSECONDS_MAX) {
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// a. Return false.
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return false;
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}
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// 5. Return true.
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return true;
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}
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}
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