github.com/klaytn/klaytn@v1.12.1/storage/statedb/errors.go (about)

     1  // Modifications Copyright 2018 The klaytn Authors
     2  // Copyright 2015 The go-ethereum Authors
     3  // This file is part of the go-ethereum library.
     4  //
     5  // The go-ethereum library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Lesser General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // The go-ethereum library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  // GNU Lesser General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Lesser General Public License
    16  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  // This file is derived from trie/errors.go (2018/06/04).
    19  // Modified and improved for the klaytn development.
    20  
    21  package statedb
    22  
    23  import (
    24  	"errors"
    25  	"fmt"
    26  
    27  	"github.com/klaytn/klaytn/common"
    28  )
    29  
    30  // MissingNodeError is returned by the trie functions (TryGet, TryUpdate, TryDelete)
    31  // in the case where a trie node is not present in the local database. It contains
    32  // information necessary for retrieving the missing node.
    33  type MissingNodeError struct {
    34  	NodeHash common.Hash // hash of the missing node
    35  	Path     []byte      // hex-encoded path to the missing node
    36  }
    37  
    38  func (err *MissingNodeError) Error() string {
    39  	return fmt.Sprintf("missing trie node %x (path %x)", err.NodeHash, err.Path)
    40  }
    41  
    42  var (
    43  	ErrZeroHashNode    = errors.New("cannot retrieve a node which has 0x00 hash value")
    44  	ErrPruningDisabled = errors.New("pruning is disabled on database")
    45  )