Solidity API

External interface of AccessControl declared to support ERC165 detection.

event RoleAdminChanged(bytes32 role, bytes32 previousAdminRole, bytes32 newAdminRole)

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

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

event RoleGranted(bytes32 role, bytes32 account, bytes32 sender)

_Emitted when account is granted role.

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

event RoleRevoked(bytes32 role, bytes32 account, bytes32 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)_

function hasRole(bytes32 role, bytes32 account) external view returns (bool)

Returns true if account has been granted role.

function getRoleAdmin(bytes32 role) external view returns (bytes32)

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

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

function grantRole(bytes32 role, bytes32 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._

function revokeRole(bytes32 role, bytes32 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._

function renounceRole(bytes32 role, bytes32 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._