Skip to content

IDelegatedAccessControl

IDelegatedAccessControl

RoleAdminChanged

event RoleAdminChanged(address delegate, string role, string previousAdminRole, string newAdminRole)

_Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`

`DELEGATED_ADMIN` is the starting admin for all roles, despite {RoleAdminChanged} not being emitted signaling this.

_Available since v3.1.__

RoleGranted

event RoleGranted(address delegate, string role, address account, address sender)

_Emitted when `account` is granted `role`.

`sender` is the account that originated the contract call, an admin role bearer except when using {DelegatedAccessControl-setupRole}.

RoleRevoked

event RoleRevoked(address delegate, string role, address account, address sender)

_Emitted when `account` is revoked `role`.

`sender` is the account that originated the contract call: - if using `revokeRole`, it is the admin role bearer - if using `renounceRole`, it is the role bearer (i.e. `account`)_

grantRole

function grantRole(address delegate, string role, address account) external

_Grants `role` to `account`.

If `account` had not been already granted `role`, emits a {RoleGranted} event.

Requirements:

  • the caller must have ``role``'s admin role._

revokeRole

function revokeRole(address delegate, string role, address account) external

_Revokes `role` from `account`.

If `account` had been granted `role`, emits a {RoleRevoked} event.

Requirements:

  • the caller must have ``role``'s admin role._

renounceRole

function renounceRole(address delegate, string role, address account) external

_Revokes `role` from the calling account.

Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced).

If the calling account had been granted `role`, emits a {RoleRevoked} event.

Requirements:

  • the caller must be `account`._

hasRole

function hasRole(address delegate, string role, address account) external view returns (bool)

Returns `true` if `account` has been granted `role`.

checkRole

function checkRole(address delegate, string role, address account) external view

revert if the `account` does not have the specified role.

Name Type Description
delegate address delegate to check
role string the role specifier.
account address the address to check the role for.

getRoleAdmin

function getRoleAdmin(address delegate, string role) external view returns (string)

_Returns the admin role that controls `role`. See {grantRole} and {revokeRole}.

To change a role's admin, use {AccessControl-setRoleAdmin}.