protocol/bc/types/block_witness.go

   1 package types
   2
   3 import (
   4         "io"
   5
   6         "github.com/vapor/encoding/blockchain"
   7 )
   8
   9 type BlockWitness struct {
  10         // Witness is a vector of arguments  for validating this block.
  11         Witness [][]byte
  12 }
  13
  14 func (bw *BlockWitness) writeTo(w io.Writer) error {
  15         _, err := blockchain.WriteVarstrList(w, bw.Witness)
  16         return err
  17 }
  18
  19 func (bw *BlockWitness) readFrom(r *blockchain.Reader) (err error) {
  20         bw.Witness, err = blockchain.ReadVarstrList(r)
  21         return err
  22 }
  23
  24 func (bw *BlockWitness) Set(index uint64, data []byte) {
  25         if uint64(len(bw.Witness)) <= index {
  26                 newWitness := make([][]byte, index+1, index+1)
  27                 copy(newWitness, bw.Witness)
  28                 bw.Witness = newWitness
  29         }
  30         bw.Witness[index] = data
  31 }
  32
  33 func (bw *BlockWitness) Delete(index uint64) {
  34         if uint64(len(bw.Witness)) > index {
  35                 bw.Witness[index] = nil
  36         }
  37 }
  38
  39 func (bw *BlockWitness) Get(index uint64) []byte {
  40         if uint64(len(bw.Witness)) > index {
  41                 return bw.Witness[index]
  42         }
  43         return nil
  44 }