//SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;

import { MemoryInterface } from "./interfaces.sol";

abstract contract Stores {

  /**
   * @dev Return ethereum address
   */
  address constant internal ethAddr = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

  /**
   * @dev Return Wrapped ETH address
   */
  address constant internal wethAddr = 0x4200000000000000000000000000000000000006;

  /**
   * @dev Return memory variable address
   */
  MemoryInterface constant internal instaMemory = MemoryInterface(0x3254Ce8f5b1c82431B8f21Df01918342215825C2);

  /**
   * @dev Get Uint value from InstaMemory Contract.
   */
  function getUint(uint getId, uint val) internal returns (uint returnVal) {
    returnVal = getId == 0 ? val : instaMemory.getUint(getId);
  }

  /**
  * @dev Set Uint value in InstaMemory Contract.
  */
  function setUint(uint setId, uint val) virtual internal {
    if (setId != 0) instaMemory.setUint(setId, val);
  }
}