{ "contractName": "Roles", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a723058200b6c41644617c7fbd34b340da41e60dafeda2ad04ffdc4c156737794530634a00029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a723058200b6c41644617c7fbd34b340da41e60dafeda2ad04ffdc4c156737794530634a00029", "sourceMap": "108:842:6:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24", "deployedSourceMap": "108:842:6:-;;;;;;;;", "source": "pragma solidity ^0.5.2;\n\n/**\n * @title Roles\n * @dev Library for managing addresses assigned to a Role.\n */\nlibrary Roles {\n struct Role {\n mapping (address => bool) bearer;\n }\n\n /**\n * @dev give an account access to this role\n */\n function add(Role storage role, address account) internal {\n require(account != address(0));\n require(!has(role, account));\n\n role.bearer[account] = true;\n }\n\n /**\n * @dev remove an account's access to this role\n */\n function remove(Role storage role, address account) internal {\n require(account != address(0));\n require(has(role, account));\n\n role.bearer[account] = false;\n }\n\n /**\n * @dev check if an account has this role\n * @return bool\n */\n function has(Role storage role, address account) internal view returns (bool) {\n require(account != address(0));\n return role.bearer[account];\n }\n}\n", "sourcePath": "openzeppelin-solidity/contracts/access/Roles.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/access/Roles.sol", "exportedSymbols": { "Roles": [ 2555 ] }, "id": 2556, "nodeType": "SourceUnit", "nodes": [ { "id": 2463, "literals": [ "solidity", "^", "0.5", ".2" ], "nodeType": "PragmaDirective", "src": "0:23:6" }, { "baseContracts": [], "contractDependencies": [], 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