IAccessControl
External interface of AccessControl declared to support ERC165 detection.
Methods
getRoleAdmin
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}.
Parameters
| Name | Type | Description |
|---|
| role | bytes32 | undefined |
Returns
| Name | Type | Description |
|---|
| _0 | bytes32 | undefined |
grantRole
function grantRole(bytes32 role, address account) external nonpayable
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.
Parameters
| Name | Type | Description |
|---|
| role | bytes32 | undefined |
| account | address | undefined |
hasRole
function hasRole(bytes32 role, address account) external view returns (bool)
Returns true if account has been granted role.
Parameters
| Name | Type | Description |
|---|
| role | bytes32 | undefined |
| account | address | undefined |
Returns
| Name | Type | Description |
|---|
| _0 | bool | undefined |
renounceRole
function renounceRole(bytes32 role, address account) external nonpayable
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.
Parameters
| Name | Type | Description |
|---|
| role | bytes32 | undefined |
| account | address | undefined |
revokeRole
function revokeRole(bytes32 role, address account) external nonpayable
Revokes role from account. If account had been granted role, emits a {RoleRevoked} event. Requirements: - the caller must have role's admin role.
Parameters
| Name | Type | Description |
|---|
| role | bytes32 | undefined |
| account | address | undefined |
Events
RoleAdminChanged
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed 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. Available since v3.1.
Parameters
| Name | Type | Description |
|---|
role indexed | bytes32 | undefined |
previousAdminRole indexed | bytes32 | undefined |
newAdminRole indexed | bytes32 | undefined |
RoleGranted
event RoleGranted(bytes32 indexed role, address indexed account, address indexed 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}.
Parameters
| Name | Type | Description |
|---|
role indexed | bytes32 | undefined |
account indexed | address | undefined |
sender indexed | address | undefined |
RoleRevoked
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed 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)
Parameters
| Name | Type | Description |
|---|
role indexed | bytes32 | undefined |
account indexed | address | undefined |
sender indexed | address | undefined |