scorex.transaction.State.scala Maven / Gradle / Ivy

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package scorex.transaction

import scorex.block.Block

import scala.util.Try

/**
  * Abstract functional interface of state which is a result of a sequential blocks applying
  */
trait State {
  private[transaction] def processBlock(block: Block): Try[State]

  def isValid(tx: Transaction, blockTime: Long): Boolean = isValid(Seq(tx), blockTime = blockTime)

  def isValid(txs: Seq[Transaction], height: Option[Int] = None, blockTime: Long): Boolean = validate(txs, height, blockTime).size == txs.size

  def validate(txs: Seq[Transaction], height: Option[Int] = None, blockTime: Long): Seq[Transaction]

  def included(signature: Array[Byte], heightOpt: Option[Int]): Option[Int]

  def included(tx: Transaction, heightOpt: Option[Int] = None): Option[Int] = included(tx.id, heightOpt)

  private[transaction] def rollbackTo(height: Int): State
}