{ "contractName": "Roles", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.5.2+commit.1df8f40c\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Library for managing addresses assigned to a Role.\",\"methods\":{},\"title\":\"Roles\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"openzeppelin-solidity/contracts/access/Roles.sol\":\"Roles\"},\"evmVersion\":\"byzantium\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"openzeppelin-solidity/contracts/access/Roles.sol\":{\"keccak256\":\"0x75481aaa988c5e9fbc91b4f695678806579c04e0ad56907978c1ca5c7e92a682\",\"urls\":[\"bzzr://da472135eb9268d863825ea26e227a9f8980c54bd32e0764d61711acca59fc89\"]}},\"version\":1}", "bytecode": 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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": [ 167 ] }, "id": 168, "nodeType": "SourceUnit", "nodes": [ { "id": 75, "literals": [ "solidity", "^", "0.5", ".2" ], "nodeType": "PragmaDirective", "src": "0:23:2" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": 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