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storage_item.go
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storage_item.go
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/*
* Copyright (C) 2019 The TesraSupernet Authors
* This file is part of The TesraSupernet library.
*
* The TesraSupernet is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The TesraSupernet is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The TesraSupernet. If not, see <http://www.gnu.org/licenses/>.
*/
package states
import (
"io"
"github.com/TesraSupernet/Tesra/common"
"github.com/TesraSupernet/Tesra/errors"
)
type StorageItem struct {
StateBase
Value []byte
}
func (this *StorageItem) Serialization(sink *common.ZeroCopySink) {
this.StateBase.Serialization(sink)
sink.WriteVarBytes(this.Value)
}
func (this *StorageItem) Deserialization(source *common.ZeroCopySource) error {
err := this.StateBase.Deserialization(source)
if err != nil {
return errors.NewDetailErr(err, errors.ErrNoCode, "[StorageItem], StateBase Deserialize failed.")
}
value, _, irregular, eof := source.NextVarBytes()
if irregular {
return errors.NewDetailErr(common.ErrIrregularData, errors.ErrNoCode, "[StorageItem], Value Deserialize failed.")
}
if eof {
return errors.NewDetailErr(io.ErrUnexpectedEOF, errors.ErrNoCode, "[StorageItem], Value Deserialize failed.")
}
this.Value = value
return nil
}
func (storageItem *StorageItem) ToArray() []byte {
return common.SerializeToBytes(storageItem)
}
func GetValueFromRawStorageItem(raw []byte) ([]byte, error) {
item := StorageItem{}
err := item.Deserialization(common.NewZeroCopySource(raw))
if err != nil {
return nil, err
}
return item.Value, nil
}
func GenRawStorageItem(value []byte) []byte {
item := StorageItem{}
item.Value = value
return item.ToArray()
}