// Copyright 2014 The go-ethereum Authors// This file is part of the go-ethereum library.//// The go-ethereum library 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 go-ethereum library 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.packagecoreimport"errors"var(// ErrKnownBlock is returned when a block to import is already known locally.ErrKnownBlock=errors.New("block already known")// ErrGasLimitReached is returned by the gas pool if the amount of gas required// by a transaction is higher than what's left in the block.ErrGasLimitReached=errors.New("gas limit reached")// ErrBlacklistedHash is returned if a block to import is on the blacklist.ErrBlacklistedHash=errors.New("blacklisted hash")// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the// next one expected based on the local chain.ErrNonceTooHigh=errors.New("nonce too high")// ErrNoGenesis is returned when there is no Genesis Block.ErrNoGenesis=errors.New("genesis not found in chain"))