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([=](unsigned size) -> bigint
        {
                bigint s = size;
                bigint b = _base;
                bigint w = _word;
                return b + (s + 31) / 32 * w;
        }, _exec, _startingBlock)
{}

ChainOperationParams::ChainOperationParams()
{
        otherParams = std::unordered_map<std::string, std::string>{
                {"minGasLimit", "0x1388"},
                {"maxGasLimit", "0x7fffffffffffffff"},
                {"gasLimitBoundDivisor", "0x0400"},
                {"minimumDifficulty", "0x020000"},
                {"difficultyBoundDivisor", "0x0800"},
                {"durationLimit", "0x0d"},
                {"registrar", "5e70c0bbcd5636e0f9f9316e9f8633feb64d4050"},
                {"networkID", "0x0"}
        };
        blockReward = u256("0x4563918244F40000");
}

u256 ChainOperationParams::u256Param(string const& _name) const
{
        std::string at("");

        auto it = otherParams.find(_name);
        if (it != otherParams.end())
                at = it->second;

        return u256(fromBigEndian<u256>(fromHex(at)));
}