protocol/bc/types/block_witness.go

   1 package types
   2
   3 import (
   4         "io"
   5
   6         "github.com/bytom/vapor/encoding/blockchain"
   7 )
   8
   9 // BlockWitness save the consensus node sign
  10 type BlockWitness struct {
  11         // Witness is a vector of arguments  for validating this block.
  12         Witness [][]byte
  13 }
  14
  15 func (bw *BlockWitness) readFrom(r *blockchain.Reader) (err error) {
  16         bw.Witness, err = blockchain.ReadVarstrList(r)
  17         return err
  18 }
  19
  20 func (bw *BlockWitness) writeTo(w io.Writer) error {
  21         _, err := blockchain.WriteVarstrList(w, bw.Witness)
  22         return err
  23 }
  24
  25 // Set save data to index position
  26 func (bw *BlockWitness) Set(index uint64, data []byte) {
  27         if uint64(len(bw.Witness)) <= index {
  28                 newWitness := make([][]byte, index+1, index+1)
  29                 copy(newWitness, bw.Witness)
  30                 bw.Witness = newWitness
  31         }
  32         bw.Witness[index] = data
  33 }
  34
  35 // Delete remove data from index position
  36 func (bw *BlockWitness) Delete(index uint64) {
  37         if uint64(len(bw.Witness)) > index {
  38                 bw.Witness[index] = nil
  39         }
  40 }
  41
  42 // Get return data from index position
  43 func (bw *BlockWitness) Get(index uint64) []byte {
  44         if uint64(len(bw.Witness)) > index {
  45                 return bw.Witness[index]
  46         }
  47         return nil
  48 }