transaction_input.swift

/** Transaction input
 */
struct TransactionInput {
  /** Final sequence number marking the input as final
   */
  static let finalSequence = UInt32.max

  /** Spending output
   */
  let outpoint: Outpoint
  
  /** Sequence number
   */
  let sequence: UInt32
  
  /** Sequence number byte count
   */
  static let sequenceByteCount = 4
  
  /** Spending authorization script
   */
  let signatureScript: TransactionScript
}

extension TransactionInput {
  /** Serialized version
  */
  var hexSerialized: String {
    return [
      outpoint.transactionId.asInternalByteOrderHex,
      outpoint.index.asLittleEndianData.hexEncoded,
      signatureScript.stackBytes.count.asCompactSizeUInt.asData.hexEncoded,
      Data(signatureScript.stackBytes).hexEncoded,
      sequence.asLittleEndianData.hexEncoded
    ].joined()
  }
}