Repository: apple/swift-nio
File: Sources/NIOCore/ByteBuffer-hexdump.swift (Swift)

Code before:
//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2023 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
//
//===----------------------------------------------------------------------===//

extension ByteBuffer {

    /// Describes a ByteBuffer hexDump format.
    /// Can be either xxd output compatible, or hexdump compatible.
    public struct HexDumpFormat {
        enum Value {
            case xxdCompatible(maxLength: Int? = nil)
            case hexDumpCompatible(maxLength: Int? = nil)
        }

        var value: Value
        init(_ value: Value) { self.value = value }

        /// A hex dump format compatible with `xxd` CLI utility.
        public static let xxdCompatible = Self(.xxdCompatible(maxLength: nil))

        /// A hex dump format compatible with `hexdump` command line utility.
        public static let hexDumpCompatible = Self(.hexDumpCompatible(maxLength: nil))

        /// A hex dump format compatible with `xxd`, clipped to `maxLength` bytes dumped.
        /// This format will dump first maxLength / 2 bytes, and the last maxLength / 2 bytes, replacing the rest with " ... ".
        public static func xxdCompatible(maxLength: Int) -> Self {
            Self(.xxdCompatible(maxLength: maxLength))
        }

        /// A hex dump format compatible with `hexdump` command line tool.
        /// This format will dump first maxLength / 2 bytes, and the last maxLength / 2 bytes, with a placeholder in between.
        public static func hexDumpCompatible(maxLength: Int) -> Self {
            Self(.hexDumpCompatible(maxLength: maxLength))
        }
    }

Review comment (suggestion):
```suggestion
        enum Value: Sendable {
```

Code after:
//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2023 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
//
//===----------------------------------------------------------------------===//

extension ByteBuffer {

    /// Describes a ByteBuffer hexDump format.
    /// Can be either xxd output compatible, or hexdump compatible.
    public struct HexDumpFormat: Hashable, Sendable {

        enum Value: Hashable {
            case plain(maxBytes: Int? = nil)
            case detailed(maxBytes: Int? = nil)
        }

        let value: Value
        init(_ value: Value) { self.value = value }

        /// A plain hex dump format compatible with `xxd` CLI utility.
        public static let plain = Self(.plain(maxBytes: nil))

        /// A hex dump format compatible with `hexdump` command line utility.
        public static let detailed = Self(.detailed(maxBytes: nil))

        /// A detailed hex dump format compatible with `xxd`, clipped to `maxBytes` bytes dumped.
        /// This format will dump first `maxBytes / 2` bytes, and the last `maxBytes / 2` bytes, replacing the rest with " ... ".
        public static func plain(maxBytes: Int) -> Self {
            Self(.plain(maxBytes: maxBytes))
        }

        /// A hex dump format compatible with `hexdump` command line tool.
        /// This format will dump first `maxBytes / 2` bytes, and the last `maxBytes / 2` bytes, with a placeholder in between.
        public static func detailed(maxBytes: Int) -> Self {
            Self(.detailed(maxBytes: maxBytes))
        }