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stackitem: introduce Convertible interface

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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.
This commit is contained in:
Roman Khimov 2021-07-17 18:37:33 +03:00
parent 2d993d0da5
commit aab18c3083
23 changed files with 223 additions and 339 deletions
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18
pkg/core/native/util.go
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@ -8,30 +8,26 @@ import (
"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/io"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
var intOne = big.NewInt(1)
func getSerializableFromDAO(id int32, d dao.DAO, key []byte, item io.Serializable) error {
func getConvertibleFromDAO(id int32, d dao.DAO, key []byte, conv stackitem.Convertible) error {
si := d.GetStorageItem(id, key)
if si == nil {
return storage.ErrKeyNotFound
}
r := io.NewBinReaderFromBuf(si)
item.DecodeBinary(r)
return r.Err
return stackitem.DeserializeConvertible(si, conv)
}
func putSerializableToDAO(id int32, d dao.DAO, key []byte, item io.Serializable) error {
w := io.NewBufBinWriter()
item.EncodeBinary(w.BinWriter)
if w.Err != nil {
return w.Err
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, w.Bytes())
return d.PutStorageItem(id, key, data)
}
func setIntWithKey(id int32, dao dao.DAO, key []byte, value int64) error {