BitStreamCodable.swift

/*
See LICENSE folder for this sample’s licensing information.

Abstract:
Protocols for defining types that can encode to bit streams.
*/

import Foundation

protocol BitStreamEncodable {
    func encode(to bitStream: inout WritableBitStream) throws
}

protocol BitStreamDecodable {
    init(from bitStream: inout ReadableBitStream) throws
}

/// - Tag: BitStreamCodable
typealias BitStreamCodable = BitStreamEncodable & BitStreamDecodable

extension BitStreamEncodable where Self: Encodable {
    func encode(to bitStream: inout WritableBitStream) throws {
        let encoder = PropertyListEncoder()
        encoder.outputFormat = .binary
        let data = try encoder.encode(self)
        bitStream.append(data)
    }
}

extension BitStreamDecodable where Self: Decodable {
    init(from bitStream: inout ReadableBitStream) throws {
        let data = try bitStream.readData()
        let decoder = PropertyListDecoder()
        self = try decoder.decode(Self.self, from: data)
    }
}