{ "contractName": "Roles", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"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\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"openzeppelin-solidity/contracts/access/Roles.sol\":{\"keccak256\":\"0x659ba0f9a3392cd50a8a5fafaf5dfd8c6a0878f6a4613bceff4e90dceddcd865\",\"urls\":[\"bzz-raw://4ca6617349a9b36fd82e9442a8e445ce9021a174e4399d1457ddc894ee3f5df3\",\"dweb:/ipfs/QmcmyB4cNazZ1sw963Afaijt67M9bDgwmGXCgQajGTD4tm\"]}},\"version\":1}", "bytecode": "0x60556023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea265627a7a72315820b5583583162d6754fe52a539650d96c054cc937e831bc9d073dcec560c5488a764736f6c63430005100032", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea265627a7a72315820b5583583162d6754fe52a539650d96c054cc937e831bc9d073dcec560c5488a764736f6c63430005100032", "sourceMap": "108:842:70:-;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "108:842:70:-;;;;;;;;", "source": "pragma solidity ^0.5.0;\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": [ 20741 ] }, "id": 20742, "nodeType": "SourceUnit", "nodes": [ { "id": 20649, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:70" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": "@title 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"ElementaryTypeName", "src": "170:4:70", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } }, "value": null, "visibility": "internal" } ], "name": "Role", "nodeType": "StructDefinition", "scope": 20741, "src": "128:61:70", "visibility": "public" }, { "body": { "id": 20685, "nodeType": "Block", "src": "317:123:70", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 20666, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 20662, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20658, "src": "335:7:70", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": 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