2024-11-18 11:18:00 -05:00
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/*
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* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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* Copyright (c) 2023, Shannon Booth <shannon@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/Instant.h>
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namespace JS::Temporal {
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// nsMaxInstant = 10**8 × nsPerDay = 8.64 × 10**21
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Crypto::SignedBigInteger const NANOSECONDS_MAX_INSTANT = "8640000000000000000000"_sbigint;
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// nsMinInstant = -nsMaxInstant = -8.64 × 10**21
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Crypto::SignedBigInteger const NANOSECONDS_MIN_INSTANT = "-8640000000000000000000"_sbigint;
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// nsPerDay = 10**6 × ℝ(msPerDay) = 8.64 × 10**13
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_DAY = 86400000000000_bigint;
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// Non-standard:
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_HOUR = 3600000000000_bigint;
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_MINUTE = 60000000000_bigint;
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_SECOND = 1000000000_bigint;
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_MILLISECOND = 1000000_bigint;
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_MICROSECOND = 1000_bigint;
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Crypto::UnsignedBigInteger const NANOSECONDS_PER_NANOSECOND = 1_bigint;
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Crypto::UnsignedBigInteger const MICROSECONDS_PER_MILLISECOND = 1000_bigint;
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Crypto::UnsignedBigInteger const MILLISECONDS_PER_SECOND = 1000_bigint;
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Crypto::UnsignedBigInteger const SECONDS_PER_MINUTE = 60_bigint;
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Crypto::UnsignedBigInteger const MINUTES_PER_HOUR = 60_bigint;
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Crypto::UnsignedBigInteger const HOURS_PER_DAY = 24_bigint;
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2024-11-21 13:21:29 -05:00
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// 8.5.1 IsValidEpochNanoseconds ( epochNanoseconds ), https://tc39.es/proposal-temporal/#sec-temporal-isvalidepochnanoseconds
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bool is_valid_epoch_nanoseconds(Crypto::SignedBigInteger const& epoch_nanoseconds)
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{
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// 1. If ℝ(epochNanoseconds) < nsMinInstant or ℝ(epochNanoseconds) > nsMaxInstant, then
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if (epoch_nanoseconds < NANOSECONDS_MIN_INSTANT || epoch_nanoseconds > NANOSECONDS_MAX_INSTANT) {
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// a. Return false.
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return false;
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}
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// 2. Return true.
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return true;
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}
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2024-11-18 11:18:00 -05:00
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}
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