github.com/codingfuture/orig-energi3@v0.8.4/energi/contracts/src/MasternodeTokenV2.sol (about)

     1  // Copyright 2020 The Energi Core Authors
     2  // This file is part of Energi Core.
     3  //
     4  // Energi Core is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU 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  // Energi Core 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 General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with Energi Core. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // Energi Governance system is the fundamental part of Energi Core.
    18  
    19  // NOTE: It's not allowed to change the compiler due to byte-to-byte
    20  //       match requirement.
    21  pragma solidity 0.5.16;
    22  //pragma experimental SMTChecker;
    23  
    24  import { GlobalConstantsV2 } from "./constantsV2.sol";
    25  import { IGovernedContract, GovernedContract } from "./GovernedContract.sol";
    26  import { IGovernedProxy } from "./IGovernedProxy.sol";
    27  import { MasternodeTokenV1 } from "./MasternodeTokenV1.sol";
    28  
    29  /**
    30   * MN-1: Genesis hardcoded version of MasternodeToken.
    31   *
    32   * NOTE: it MUST NOT change after blockchain launch!
    33   */
    34  contract MasternodeTokenV2 is
    35      MasternodeTokenV1,
    36      GlobalConstantsV2
    37  {
    38      constructor(address _proxy, IGovernedProxy _registry_proxy)
    39          public
    40          MasternodeTokenV1(_proxy, _registry_proxy)
    41      {}
    42  
    43      // ERC20
    44      //---------------------------------
    45      function symbol() external view returns (string memory) {
    46          return "MNRG";
    47      }
    48  
    49      function decimals() external view returns (uint8) {
    50          return 18;
    51      }
    52  
    53      // IGovernedContract
    54      //---------------------------------
    55      function _migrate(IGovernedContract _oldImpl) internal {
    56          v1storage.kill();
    57          v1storage = MasternodeTokenV1(address(_oldImpl)).v1storage();
    58      }
    59  
    60      function _destroy(IGovernedContract _newImpl) internal {
    61          v1storage.setOwner(_newImpl);
    62      }
    63  
    64      //---------------------------------
    65      function _validateBalance(uint256 _amount) internal pure {
    66          // NOTE: "Too small" check makes no sense as it would be just zero.
    67  
    68          if (_amount > MN_COLLATERAL_MAX) {
    69              revert("Too much");
    70          }
    71  
    72          if ((_amount % MN_COLLATERAL_V2_MIN) != 0) {
    73              revert("Not a multiple");
    74          }
    75      }
    76  
    77      // Safety
    78      //---
    79      function () external payable {
    80          revert("Not supported");
    81      }
    82  }