neoneo-go/pkg/core/native/util.go
Roman Khimov 418ba1dbc3 *: use internal variables for simple big.NewInt() values
Avoid additional allocations.
2021-12-01 21:36:25 +03:00

60 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)
var intTwo = big.NewInt(2)
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
}