5471fc808a
* Updated code style to 4 spaces and 120 max characters per line. * Update contracts/token/ERC721/ERC721Pausable.sol Co-Authored-By: nventuro <nicolas.venturo@gmail.com> * Update contracts/token/ERC721/IERC721.sol Co-Authored-By: nventuro <nicolas.venturo@gmail.com>
41 lines
952 B
Solidity
41 lines
952 B
Solidity
pragma solidity ^0.4.24;
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/**
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* @title Roles
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* @dev Library for managing addresses assigned to a Role.
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*/
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library Roles {
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struct Role {
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mapping (address => bool) bearer;
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}
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/**
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* @dev give an account access to this role
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*/
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function add(Role storage role, address account) internal {
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require(account != address(0));
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require(!has(role, account));
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role.bearer[account] = true;
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}
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/**
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* @dev remove an account's access to this role
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*/
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function remove(Role storage role, address account) internal {
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require(account != address(0));
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require(has(role, account));
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role.bearer[account] = false;
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}
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/**
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* @dev check if an account has this role
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* @return bool
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*/
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function has(Role storage role, address account) internal view returns (bool) {
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require(account != address(0));
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return role.bearer[account];
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}
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}
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