neoneo-go/pkg/core/state/native_state.go

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package state
import (
"math/big"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// NEP5BalanceState represents balance state of a NEP5-token.
type NEP5BalanceState struct {
Balance big.Int
}
// NEOBalanceState represents balance state of a NEO-token.
type NEOBalanceState struct {
NEP5BalanceState
BalanceHeight uint32
Votes keys.PublicKeys
}
// NEP5BalanceStateFromBytes converts serialized NEP5BalanceState to structure.
func NEP5BalanceStateFromBytes(b []byte) (*NEP5BalanceState, error) {
balance := new(NEP5BalanceState)
if len(b) == 0 {
return balance, nil
}
r := io.NewBinReaderFromBuf(b)
balance.DecodeBinary(r)
if r.Err != nil {
return nil, r.Err
}
return balance, nil
}
// Bytes returns serialized NEP5BalanceState.
func (s *NEP5BalanceState) Bytes() []byte {
w := io.NewBufBinWriter()
s.EncodeBinary(w.BinWriter)
if w.Err != nil {
panic(w.Err)
}
return w.Bytes()
}
func (s *NEP5BalanceState) toStackItem() stackitem.Item {
return stackitem.NewStruct([]stackitem.Item{stackitem.NewBigInteger(&s.Balance)})
}
func (s *NEP5BalanceState) fromStackItem(item stackitem.Item) {
s.Balance = *item.(*stackitem.Struct).Value().([]stackitem.Item)[0].Value().(*big.Int)
}
// EncodeBinary implements io.Serializable interface.
func (s *NEP5BalanceState) EncodeBinary(w *io.BinWriter) {
si := s.toStackItem()
stackitem.EncodeBinaryStackItem(si, w)
}
// DecodeBinary implements io.Serializable interface.
func (s *NEP5BalanceState) DecodeBinary(r *io.BinReader) {
si := stackitem.DecodeBinaryStackItem(r)
if r.Err != nil {
return
}
s.fromStackItem(si)
}
// NEOBalanceStateFromBytes converts serialized NEOBalanceState to structure.
func NEOBalanceStateFromBytes(b []byte) (*NEOBalanceState, error) {
balance := new(NEOBalanceState)
if len(b) == 0 {
return balance, nil
}
r := io.NewBinReaderFromBuf(b)
balance.DecodeBinary(r)
if r.Err != nil {
return nil, r.Err
}
return balance, nil
}
// Bytes returns serialized NEOBalanceState.
func (s *NEOBalanceState) Bytes() []byte {
w := io.NewBufBinWriter()
s.EncodeBinary(w.BinWriter)
if w.Err != nil {
panic(w.Err)
}
return w.Bytes()
}
// EncodeBinary implements io.Serializable interface.
func (s *NEOBalanceState) EncodeBinary(w *io.BinWriter) {
si := s.toStackItem()
stackitem.EncodeBinaryStackItem(si, w)
}
// DecodeBinary implements io.Serializable interface.
func (s *NEOBalanceState) DecodeBinary(r *io.BinReader) {
si := stackitem.DecodeBinaryStackItem(r)
if r.Err != nil {
return
}
s.fromStackItem(si)
}
func (s *NEOBalanceState) toStackItem() stackitem.Item {
result := s.NEP5BalanceState.toStackItem().(*stackitem.Struct)
result.Append(stackitem.NewBigInteger(big.NewInt(int64(s.BalanceHeight))))
votes := make([]stackitem.Item, len(s.Votes))
for i, v := range s.Votes {
votes[i] = stackitem.NewByteArray(v.Bytes())
}
result.Append(stackitem.NewArray(votes))
return result
}
func (s *NEOBalanceState) fromStackItem(item stackitem.Item) {
structItem := item.Value().([]stackitem.Item)
s.Balance = *structItem[0].Value().(*big.Int)
s.BalanceHeight = uint32(structItem[1].Value().(*big.Int).Int64())
votes := structItem[2].Value().([]stackitem.Item)
s.Votes = make([]*keys.PublicKey, len(votes))
for i, v := range votes {
s.Votes[i] = new(keys.PublicKey)
s.Votes[i].DecodeBytes(v.Value().([]byte))
}
}