github.com/aquanetwork/aquachain@v1.7.8/consensus/misc/hf.go (about)

     1  // Copyright 2016 The aquachain Authors
     2  // This file is part of the aquachain library.
     3  //
     4  // The aquachain 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 aquachain 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 aquachain library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package misc
    18  
    19  import (
    20  	"math/big"
    21  
    22  	"gitlab.com/aquachain/aquachain/common"
    23  	"gitlab.com/aquachain/aquachain/core/state"
    24  	"gitlab.com/aquachain/aquachain/core/types"
    25  	"gitlab.com/aquachain/aquachain/params"
    26  )
    27  
    28  func VerifyHFHeaderExtraData(config *params.ChainConfig, header *types.Header) error {
    29  	return nil
    30  }
    31  
    32  // ApplyHardFork modifies the state database according to the specific hf
    33  func ApplyHardFork(statedb *state.StateDB) {
    34  	// do nothing
    35  }
    36  
    37  func ApplyHardFork4(statedb *state.StateDB) {
    38  	big0 := new(big.Int)
    39  	for _, hexadd := range DeallocListHF4 {
    40  		address := common.HexToAddress(hexadd)
    41  		if statedb.Exist(address) {
    42  			statedb.SetBalance(address, big0)
    43  		}
    44  	}
    45  }
    46  
    47  func ApplyHardFork5(statedb *state.StateDB) {
    48  	for _, hexadd := range DeallocListHF4 {
    49  		address := common.HexToAddress(hexadd)
    50  		if statedb.Exist(address) {
    51  			statedb.Empty(address)
    52  		}
    53  	}
    54  }