package importer import ( "math/big" "github.com/ethereum/go-ethereum/consensus/ethash" ethstate "github.com/ethereum/go-ethereum/core/state" ethtypes "github.com/ethereum/go-ethereum/core/types" ethparams "github.com/ethereum/go-ethereum/params" ) // Some weird constants to avoid constant memory allocs for them. var ( big8 = big.NewInt(8) big32 = big.NewInt(32) ) // accumulateRewards credits the coinbase of the given block with the mining // reward. The total reward consists of the static block reward and rewards for // included uncles. The coinbase of each uncle block is also rewarded. func accumulateRewards(config *ethparams.ChainConfig, state *ethstate.StateDB, header *ethtypes.Header, uncles []*ethtypes.Header) { // select the correct block reward based on chain progression blockReward := ethash.FrontierBlockReward if config.IsByzantium(header.Number) { blockReward = ethash.ByzantiumBlockReward } // accumulate the rewards for the miner and any included uncles reward := new(big.Int).Set(blockReward) r := new(big.Int) for _, uncle := range uncles { r.Add(uncle.Number, big8) r.Sub(r, header.Number) r.Mul(r, blockReward) r.Div(r, big8) state.AddBalance(uncle.Coinbase, r) r.Div(blockReward, big32) reward.Add(reward, r) } state.AddBalance(header.Coinbase, reward) }