mirror of
https://github.com/apple/swift-nio-extras.git
synced 2025-05-14 00:42:41 +08:00
3f776e9aaf
### Motivation: To migrate to GitHub actions and centralised infrastructure. ### Modifications: Changes of note: * Adopt swift-format using rules from SwiftNIO * Remove scripts and docker files which are no longer needed ### Result: Feature parity with old CI.
80 lines
2.7 KiB
Swift
80 lines
2.7 KiB
Swift
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This source file is part of the SwiftNIO open source project
|
|
//
|
|
// Copyright (c) 2021 Apple Inc. and the SwiftNIO project authors
|
|
// Licensed under Apache License v2.0
|
|
//
|
|
// See LICENSE.txt for license information
|
|
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
import NIOCore
|
|
|
|
/// A struct to describe the length of a piece of data in bits
|
|
public struct NIOLengthFieldBitLength: Sendable {
|
|
internal enum Backing {
|
|
case bits8
|
|
case bits16
|
|
case bits24
|
|
case bits32
|
|
case bits64
|
|
}
|
|
internal let bitLength: Backing
|
|
|
|
/// One byte - the same as ``eightBits``
|
|
public static let oneByte = NIOLengthFieldBitLength(bitLength: .bits8)
|
|
/// Two bytes - the same as ``sixteenBits``
|
|
public static let twoBytes = NIOLengthFieldBitLength(bitLength: .bits16)
|
|
/// Three bytes - the same as ``twentyFourBits``
|
|
public static let threeBytes = NIOLengthFieldBitLength(bitLength: .bits24)
|
|
/// Four bytes - the same as ``thirtyTwoBits``
|
|
public static let fourBytes = NIOLengthFieldBitLength(bitLength: .bits32)
|
|
/// Eight bytes - the same as ``sixtyFourBits``
|
|
public static let eightBytes = NIOLengthFieldBitLength(bitLength: .bits64)
|
|
|
|
/// Eight bits - the same as ``oneByte``
|
|
public static let eightBits = NIOLengthFieldBitLength(bitLength: .bits8)
|
|
/// Sixteen bits - the same as ``twoBytes``
|
|
public static let sixteenBits = NIOLengthFieldBitLength(bitLength: .bits16)
|
|
/// Twenty-four bits - the same as ``threeBytes``
|
|
public static let twentyFourBits = NIOLengthFieldBitLength(bitLength: .bits24)
|
|
/// Thirty-two bits - the same as ``fourBytes``
|
|
public static let thirtyTwoBits = NIOLengthFieldBitLength(bitLength: .bits32)
|
|
/// Sixty-four bits - the same as ``eightBytes``
|
|
public static let sixtyFourBits = NIOLengthFieldBitLength(bitLength: .bits64)
|
|
|
|
internal var length: Int {
|
|
switch bitLength {
|
|
case .bits8:
|
|
return 1
|
|
case .bits16:
|
|
return 2
|
|
case .bits24:
|
|
return 3
|
|
case .bits32:
|
|
return 4
|
|
case .bits64:
|
|
return 8
|
|
}
|
|
}
|
|
|
|
internal var max: UInt {
|
|
switch bitLength {
|
|
case .bits8:
|
|
return UInt(UInt8.max)
|
|
case .bits16:
|
|
return UInt(UInt16.max)
|
|
case .bits24:
|
|
return (UInt(UInt16.max) << 8) &+ UInt(UInt8.max)
|
|
case .bits32:
|
|
return UInt(UInt32.max)
|
|
case .bits64:
|
|
return UInt(UInt64.max)
|
|
}
|
|
}
|
|
}
|