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"source": "pragma solidity ^0.4.18;\n\nimport \"./AppStorage.sol\";\nimport \"../common/Initializable.sol\";\nimport \"../evmscript/EVMScriptRunner.sol\";\nimport \"../acl/ACLSyntaxSugar.sol\";\n\n\ncontract AragonApp is AppStorage, Initializable, ACLSyntaxSugar, EVMScriptRunner {\n modifier auth(bytes32 _role) {\n require(canPerform(msg.sender, _role, new uint256[](0)));\n _;\n }\n\n modifier authP(bytes32 _role, uint256[] params) {\n require(canPerform(msg.sender, _role, params));\n _;\n }\n\n function canPerform(address _sender, bytes32 _role, uint256[] params) public view returns (bool) {\n bytes memory how; // no need to init memory as it is never used\n if (params.length > 0) {\n uint256 byteLength = params.length * 32;\n assembly {\n how := params // forced casting\n mstore(how, byteLength)\n }\n }\n return address(kernel) == 0 || kernel.hasPermission(_sender, address(this), _role, how);\n }\n}\n", "sourcePath": "@aragon/os/contracts/apps/AragonApp.sol", "ast": { "attributes": { 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"ImportDirective", "src": "91:42:20" }, { "attributes": { "SourceUnit": 5981, "absolutePath": "@aragon/os/contracts/acl/ACLSyntaxSugar.sol", "file": "../acl/ACLSyntaxSugar.sol", "scope": 6969, "symbolAliases": [ null ], "unitAlias": "" }, "id": 6876, "name": "ImportDirective", "src": "134:35:20" }, { "attributes": { "contractDependencies": [ 5905, 6870, 7261, 7846, 7877 ], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "linearizedBaseContracts": [ 6968, 7846, 7877, 5905, 7261, 6870 ], "name": "AragonApp", "scope": 6969 }, "children": [ { "attributes": { "arguments": [ null ] }, "children": [ { "attributes": { "contractScope": null, "name": "AppStorage", "referencedDeclaration": 6870, "type": "contract AppStorage" }, "id": 6877, "name": "UserDefinedTypeName", "src": "194:10:20" } ], "id": 6878, "name": "InheritanceSpecifier", "src": "194:10:20" }, { "attributes": { "arguments": [ null ] }, "children": [ { "attributes": { "contractScope": null, "name": 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