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) var intTwo = big.NewInt(2) func getConvertibleFromDAO(id int32, d *dao.Simple, 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.Simple, key []byte, conv stackitem.Convertible) error { item, err := conv.ToStackItem() if err != nil { return err } data, err := d.GetItemCtx().Serialize(item, false) if err != nil { return err } d.PutStorageItem(id, key, data) return nil } func setIntWithKey(id int32, dao *dao.Simple, key []byte, value int64) { dao.PutBigInt(id, key, big.NewInt(value)) } func getIntWithKey(id int32, dao *dao.Simple, 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 the 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 }