ChainOperationParams.cpp

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/*
    This file is part of cpp-ethereum.

    cpp-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    cpp-ethereum 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
#include "ChainOperationParams.h"
#include <libdevcore/Log.h>
#include <libdevcore/CommonData.h>
using namespace std;
using namespace dev;
using namespace eth;

PrecompiledContract::PrecompiledContract(
    unsigned _base,
    unsigned _word,
    PrecompiledExecutor const& _exec,
    u256 const& _startingBlock
):
    PrecompiledContract([=](bytesConstRef _in) -> bigint
    {
        bigint s = _in.size();
        bigint b = _base;
        bigint w = _word;
        return b + (s + 31) / 32 * w;
    }, _exec, _startingBlock)
{}

ChainOperationParams::ChainOperationParams():
    m_blockReward("0x4563918244F40000"),
    minGasLimit(0x1388),
    maxGasLimit("0x7fffffffffffffff"),
    gasLimitBoundDivisor(0x0400),
    networkID(0x0),
    minimumDifficulty(0x020000),
    difficultyBoundDivisor(0x0800),
    durationLimit(0x0d)
{
}

EVMSchedule const& ChainOperationParams::scheduleForBlockNumber(u256 const& _blockNumber) const
{
    if (_blockNumber >= experimentalForkBlock)
        return ExperimentalSchedule;
    else if (_blockNumber >= constantinopleForkBlock)
        return ConstantinopleSchedule;
    else if (_blockNumber >= eWASMForkBlock)
        return EWASMSchedule;
    else if (_blockNumber >= byzantiumForkBlock)
        return ByzantiumSchedule;
    else if (_blockNumber >= EIP158ForkBlock)
        return EIP158Schedule;
    else if (_blockNumber >= EIP150ForkBlock)
        return EIP150Schedule;
    else if (_blockNumber >= homesteadForkBlock)
        return HomesteadSchedule;
    else
        return FrontierSchedule;
}

u256 ChainOperationParams::blockReward(EVMSchedule const& _schedule) const
{
    if (_schedule.blockRewardOverwrite)
        return *_schedule.blockRewardOverwrite;
    else
        return m_blockReward;
}

void ChainOperationParams::setBlockReward(u256 const& _newBlockReward)
{
    m_blockReward = _newBlockReward;
}