/*

    Copyright 2020 DODO ZOO.
    SPDX-License-Identifier: Apache-2.0

*/

pragma solidity 0.6.9;
pragma experimental ABIEncoderV2;

import {Types} from "./Types.sol";

/**
 * @title ReentrancyGuard
 * @author DODO Breeder
 *
 * @notice Protect functions from Reentrancy Attack
 */
contract ReentrancyGuard {
    Types.EnterStatus private _ENTER_STATUS_;

    constructor() internal {
        _ENTER_STATUS_ = Types.EnterStatus.NOT_ENTERED;
    }

    modifier preventReentrant() {
        require(_ENTER_STATUS_ != Types.EnterStatus.ENTERED, "ReentrancyGuard: reentrant call");
        _ENTER_STATUS_ = Types.EnterStatus.ENTERED;
        _;
        _ENTER_STATUS_ = Types.EnterStatus.NOT_ENTERED;
    }
}