mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-23 13:38:35 +00:00
aab18c3083
We have a lot of native contract types that are converted to stack items before serialization, then deserialized as stack items and converted back to regular structures. stackitem.Convertible allows to remove a lot of repetitive io.Serializable code. This also introduces to/from converter in testserdes which unfortunately required to change util tests to avoid circular references.
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package native
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/core/dao"
|
|
"github.com/nspcc-dev/neo-go/pkg/core/storage"
|
|
"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
|
|
"github.com/nspcc-dev/neo-go/pkg/util"
|
|
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
|
|
)
|
|
|
|
var intOne = big.NewInt(1)
|
|
|
|
func getConvertibleFromDAO(id int32, d dao.DAO, key []byte, conv stackitem.Convertible) error {
|
|
si := d.GetStorageItem(id, key)
|
|
if si == nil {
|
|
return storage.ErrKeyNotFound
|
|
}
|
|
return stackitem.DeserializeConvertible(si, conv)
|
|
}
|
|
|
|
func putConvertibleToDAO(id int32, d dao.DAO, key []byte, conv stackitem.Convertible) error {
|
|
data, err := stackitem.SerializeConvertible(conv)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return d.PutStorageItem(id, key, data)
|
|
}
|
|
|
|
func setIntWithKey(id int32, dao dao.DAO, key []byte, value int64) error {
|
|
return dao.PutStorageItem(id, key, bigint.ToBytes(big.NewInt(value)))
|
|
}
|
|
|
|
func getIntWithKey(id int32, dao dao.DAO, key []byte) int64 {
|
|
si := dao.GetStorageItem(id, key)
|
|
if si == nil {
|
|
panic(fmt.Errorf("item with id = %d and key = %s is not initialized", id, hex.EncodeToString(key)))
|
|
}
|
|
return bigint.FromBytes(si).Int64()
|
|
}
|
|
|
|
// makeUint160Key creates a key from account script hash.
|
|
func makeUint160Key(prefix byte, h util.Uint160) []byte {
|
|
k := make([]byte, util.Uint160Size+1)
|
|
k[0] = prefix
|
|
copy(k[1:], h.BytesBE())
|
|
return k
|
|
}
|
|
|
|
func toString(item stackitem.Item) string {
|
|
s, err := stackitem.ToString(item)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return s
|
|
}
|