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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
#if canImport(FoundationEssentials)
import FoundationEssentials
#endif
internal import _FoundationICU
#if os(Android)
import Android
#elseif canImport(Glibc)
import Glibc
#elseif canImport(Musl)
import Musl
#elseif canImport(Darwin)
import Darwin
#endif
/// Internal extensions on Date, for interop with ICU.
extension Date {
/// Convert a Date into a UDate.
/// UDate is defined as number of milliseconds since 1970 Jan 01, 00:00 UTC
/// Date is defined as the number of seconds since 2001 Jan 01, 00:00 UTC (`Date`'s "reference date" and `CFAbsoluteTime`).
var udate: UDate {
timeIntervalSince1970 * 1000
}
/// Convert a Date into a UDate, to a precision of 1 second maximum.
/// UDate is defined as number of milliseconds since 1970 Jan 01, 00:00 UTC
/// Date is defined as the number of seconds since 2001 Jan 01, 00:00 UTC (`Date`'s "reference date" and `CFAbsoluteTime`).
var udateInSeconds: UDate {
(floor(timeIntervalSinceReferenceDate) + Date.timeIntervalBetween1970AndReferenceDate) * 1000
}
/// Convert a UDate into a Date.
/// UDate is defined as number of milliseconds since 1970 Jan 01, 00:00 UTC.
/// Date is defined as the number of seconds since 2001 Jan 01, 00:00 UTC (`Date`'s "reference date" and `CFAbsoluteTime`).
init(udate: UDate) {
self = Date(timeIntervalSince1970: udate / 1000)
}
}
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