mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-26 19:42:23 +00:00
94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
package native
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import (
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"encoding/binary"
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"encoding/hex"
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"fmt"
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"math/big"
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"github.com/nspcc-dev/neo-go/pkg/core/dao"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/core/storage"
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"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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var intOne = big.NewInt(1)
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func getSerializableFromDAO(id int32, d dao.DAO, key []byte, item io.Serializable) error {
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si := d.GetStorageItem(id, key)
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if si == nil {
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return storage.ErrKeyNotFound
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}
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r := io.NewBinReaderFromBuf(si)
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item.DecodeBinary(r)
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return r.Err
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}
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func putSerializableToDAO(id int32, d dao.DAO, key []byte, item io.Serializable) error {
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w := io.NewBufBinWriter()
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item.EncodeBinary(w.BinWriter)
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if w.Err != nil {
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return w.Err
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}
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return d.PutStorageItem(id, key, w.Bytes())
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}
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func getInt64WithKey(id int32, d dao.DAO, key []byte, defaultValue int64) int64 {
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si := d.GetStorageItem(id, key)
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if si == nil {
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return defaultValue
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}
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return int64(binary.LittleEndian.Uint64(si))
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}
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func setInt64WithKey(id int32, dao dao.DAO, key []byte, value int64) error {
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si := make(state.StorageItem, 8)
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binary.LittleEndian.PutUint64(si, uint64(value))
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return dao.PutStorageItem(id, key, si)
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}
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func getUint32WithKey(id int32, dao dao.DAO, key []byte, defaultValue uint32) uint32 {
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si := dao.GetStorageItem(id, key)
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if si == nil {
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return defaultValue
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}
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return binary.LittleEndian.Uint32(si)
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}
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func setUint32WithKey(id int32, dao dao.DAO, key []byte, value uint32) error {
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si := make(state.StorageItem, 4)
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binary.LittleEndian.PutUint32(si, value)
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return dao.PutStorageItem(id, key, si)
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}
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func setIntWithKey(id int32, dao dao.DAO, key []byte, value int64) error {
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return dao.PutStorageItem(id, key, bigint.ToBytes(big.NewInt(value)))
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}
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func getIntWithKey(id int32, dao dao.DAO, key []byte) int64 {
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si := dao.GetStorageItem(id, key)
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if si == nil {
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panic(fmt.Errorf("item with id = %d and key = %s is not initialized", id, hex.EncodeToString(key)))
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}
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return bigint.FromBytes(si).Int64()
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}
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// makeUint160Key creates a key from account script hash.
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func makeUint160Key(prefix byte, h util.Uint160) []byte {
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k := make([]byte, util.Uint160Size+1)
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k[0] = prefix
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copy(k[1:], h.BytesBE())
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return k
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}
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func toString(item stackitem.Item) string {
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s, err := stackitem.ToString(item)
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if err != nil {
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panic(err)
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}
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return s
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}
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