github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/trie/errors.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar 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-aigar 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-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package trie
    19  
    20  import (
    21  	"fmt"
    22  
    23  	"github.com/AigarNetwork/aigar/common"
    24  )
    25  
    26  // MissingNodeError is returned by the trie functions (TryGet, TryUpdate, TryDelete)
    27  // in the case where a trie node is not present in the local database. It contains
    28  // information necessary for retrieving the missing node.
    29  type MissingNodeError struct {
    30  	NodeHash common.Hash // hash of the missing node
    31  	Path     []byte      // hex-encoded path to the missing node
    32  }
    33  
    34  func (err *MissingNodeError) Error() string {
    35  	return fmt.Sprintf("missing trie node %x (path %x)", err.NodeHash, err.Path)
    36  }