// SPDX-License-Identifier: Apache-2.0

import Foundation

public protocol InputStream: Stream, IteratorProtocol {
  associatedtype Element = UInt8

  mutating func read(_ count: Int) throws(StreamError) -> Data
}

public extension InputStream {
  mutating func read(_ size: Int, items: Int) throws(StreamError) -> Data {
    try self.read(size * items)
  }
}

public extension InputStream {
  mutating func next() -> UInt8? {
    try? self.read(1).first
  }
}