e7aa8dedbc
* turn off blank-lines rule
* remove triple newlines
(cherry picked from commit 9b37104655)
41 lines
825 B
Solidity
41 lines
825 B
Solidity
pragma solidity ^0.4.24;
|
|
|
|
/**
|
|
* @title Roles
|
|
* @dev Library for managing addresses assigned to a Role.
|
|
*/
|
|
library Roles {
|
|
struct Role {
|
|
mapping (address => bool) bearer;
|
|
}
|
|
|
|
/**
|
|
* @dev give an account access to this role
|
|
*/
|
|
function add(Role storage role, address account) internal {
|
|
require(account != address(0));
|
|
role.bearer[account] = true;
|
|
}
|
|
|
|
/**
|
|
* @dev remove an account's access to this role
|
|
*/
|
|
function remove(Role storage role, address account) internal {
|
|
require(account != address(0));
|
|
role.bearer[account] = false;
|
|
}
|
|
|
|
/**
|
|
* @dev check if an account has this role
|
|
* @return bool
|
|
*/
|
|
function has(Role storage role, address account)
|
|
internal
|
|
view
|
|
returns (bool)
|
|
{
|
|
require(account != address(0));
|
|
return role.bearer[account];
|
|
}
|
|
}
|