1// Copyright 2015 The go-ethereum Authors 2// This file is part of the go-ethereum library. 3// 4// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17package core 18 19import ( 20 "github.com/ethereum/go-ethereum/core/state" 21 "github.com/ethereum/go-ethereum/core/types" 22 "github.com/ethereum/go-ethereum/core/vm" 23) 24 25// Validator is an interface which defines the standard for block validation. It 26// is only responsible for validating block contents, as the header validation is 27// done by the specific consensus engines. 28type Validator interface { 29 // ValidateBody validates the given block's content. 30 ValidateBody(block *types.Block) error 31 32 // ValidateState validates the given statedb and optionally the receipts and 33 // gas used. 34 ValidateState(block *types.Block, state *state.StateDB, receipts types.Receipts, usedGas uint64) error 35} 36 37// Prefetcher is an interface for pre-caching transaction signatures and state. 38type Prefetcher interface { 39 // Prefetch processes the state changes according to the Ethereum rules by running 40 // the transaction messages using the statedb, but any changes are discarded. The 41 // only goal is to pre-cache transaction signatures and state trie nodes. 42 Prefetch(block *types.Block, statedb *state.StateDB, cfg vm.Config, interrupt *uint32) 43} 44 45// Processor is an interface for processing blocks using a given initial state. 46type Processor interface { 47 // Process processes the state changes according to the Ethereum rules by running 48 // the transaction messages using the statedb and applying any rewards to both 49 // the processor (coinbase) and any included uncles. 50 Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error) 51} 52