github.com/SmartMeshFoundation/Spectrum@v0.0.0-20220621030607-452a266fee1e/consensus/errors.go (about)

     1  // Copyright 2017 The Spectrum Authors
     2  // This file is part of the Spectrum library.
     3  //
     4  // The Spectrum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The Spectrum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the Spectrum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package consensus
    18  
    19  import "errors"
    20  
    21  var (
    22  	// ErrUnknownAncestor is returned when validating a block requires an ancestor
    23  	// that is unknown.
    24  	ErrUnknownAncestor = errors.New("unknown ancestor")
    25  
    26  	// ErrFutureBlock is returned when a block's timestamp is in the future according
    27  	// to the current node.
    28  	ErrFutureBlock = errors.New("block in the future")
    29  
    30  	// ErrInvalidNumber is returned if a block's number doesn't equal it's parent's
    31  	// plus one.
    32  	ErrInvalidNumber = errors.New("invalid block number")
    33  )