PauserRole.sol 781 B

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  1. pragma solidity ^0.4.24;
  2. import "../Roles.sol";
  3. contract PauserRole {
  4. using Roles for Roles.Role;
  5. event PauserAdded(address indexed account);
  6. event PauserRemoved(address indexed account);
  7. Roles.Role private pausers;
  8. constructor() public {
  9. pausers.add(msg.sender);
  10. }
  11. modifier onlyPauser() {
  12. require(isPauser(msg.sender));
  13. _;
  14. }
  15. function isPauser(address account) public view returns (bool) {
  16. return pausers.has(account);
  17. }
  18. function addPauser(address account) public onlyPauser {
  19. pausers.add(account);
  20. emit PauserAdded(account);
  21. }
  22. function renouncePauser() public {
  23. pausers.remove(msg.sender);
  24. }
  25. function _removePauser(address account) internal {
  26. pausers.remove(account);
  27. emit PauserRemoved(account);
  28. }
  29. }