@openzeppelin/upgrades

{ "fileName": "ZosBaseAdminUpgradeabilityProxy.sol", "contractName": "ZosBaseAdminUpgradeabilityProxy", "source": "pragma solidity ^0.5.0;\n\nimport './ZosUpgradeabilityProxy.sol';\n\n/**\n * @title BaseAdminUpgradeabilityProxy\n * @dev This contract combines an upgradeability proxy with an authorization\n * mechanism for administrative tasks.\n * All external functions in this contract must be guarded by the\n * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity\n * feature proposal that would enable this to be done automatically.\n */\ncontract ZosBaseAdminUpgradeabilityProxy is ZosBaseUpgradeabilityProxy {\n /**\n * @dev Emitted when the administration has been transferred.\n * @param previousAdmin Address of the previous admin.\n * @param newAdmin Address of the new admin.\n */\n event AdminChanged(address previousAdmin, address newAdmin);\n\n /**\n * @dev Storage slot with the admin of the contract.\n * This is the keccak-256 hash of \"org.zeppelinos.proxy.admin\", and is\n * validated in the constructor.\n */\n\n bytes32 internal constant ADMIN_SLOT = 0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b;\n\n /**\n * @dev Modifier to check whether the `msg.sender` is the admin.\n * If it is, it will run the function. Otherwise, it will delegate the call\n * to the implementation.\n */\n modifier ifAdmin() {\n if (msg.sender == _admin()) {\n _;\n } else {\n _fallback();\n }\n }\n\n /**\n * @return The address of the proxy admin.\n */\n function admin() external ifAdmin returns (address) {\n return _admin();\n }\n\n /**\n * @return The address of the implementation.\n */\n function implementation() external ifAdmin returns (address) {\n return _implementation();\n }\n\n /**\n * @dev Changes the admin of the proxy.\n * Only the current admin can call this function.\n * @param newAdmin Address to transfer proxy administration to.\n */\n function changeAdmin(address newAdmin) external ifAdmin {\n require(newAdmin != address(0), \"Cannot change the admin of a proxy to the zero address\");\n emit AdminChanged(_admin(), newAdmin);\n _setAdmin(newAdmin);\n }\n\n /**\n * @dev Upgrade the backing implementation of the proxy.\n * Only the admin can call this function.\n * @param newImplementation Address of the new implementation.\n */\n function upgradeTo(address newImplementation) external ifAdmin {\n _upgradeTo(newImplementation);\n }\n\n /**\n * @dev Upgrade the backing implementation of the proxy and call a function\n * on the new implementation.\n * This is useful to initialize the proxied contract.\n * @param newImplementation Address of the new implementation.\n * @param data Data to send as msg.data in the low level call.\n * It should include the signature and the parameters of the function to be called, as described in\n * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.\n */\n function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {\n _upgradeTo(newImplementation);\n (bool success,) = newImplementation.delegatecall(data);\n require(success);\n }\n\n /**\n * @return The admin slot.\n */\n function _admin() internal view returns (address adm) {\n bytes32 slot = ADMIN_SLOT;\n assembly {\n adm := sload(slot)\n }\n }\n\n /**\n * @dev Sets the address of the proxy admin.\n * @param newAdmin Address of the new proxy admin.\n */\n function _setAdmin(address newAdmin) internal {\n bytes32 slot = ADMIN_SLOT;\n\n assembly {\n sstore(slot, newAdmin)\n }\n }\n\n /**\n * @dev Only fall back when the sender is not the admin.\n */\n function _willFallback() internal {\n require(msg.sender != _admin(), \"Cannot call fallback function from the proxy admin\");\n super._willFallback();\n }\n}\n", "sourcePath": "contracts/mocks/zos/ZosBaseAdminUpgradeabilityProxy.sol", "sourceMap": "428:3283:28:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;428:3283:28;;;;;;;", "deployedSourceMap": 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"abi": [ { "constant": false, "inputs": [ { "name": "newImplementation", "type": "address" } ], "name": "upgradeTo", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "newImplementation", "type": "address" }, { "name": "data", "type": "bytes" } ], "name": "upgradeToAndCall", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [], "name": "implementation", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "newAdmin", "type": "address" } ], "name": "changeAdmin", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "admin", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "payable": true, "stateMutability": "payable", "type": "fallback" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "previousAdmin", "type": "address" }, { "indexed": false, "name": "newAdmin", "type": "address" } ], "name": "AdminChanged", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "implementation", "type": "address" } ], "name": "Upgraded", "type": "event" } ], "ast": { "absolutePath": "contracts/mocks/zos/ZosBaseAdminUpgradeabilityProxy.sol", "exportedSymbols": { "ZosBaseAdminUpgradeabilityProxy": [ 5184 ] }, "id": 5185, "nodeType": "SourceUnit", "nodes": [ { "id": 5030, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:28" }, { "absolutePath": "contracts/mocks/zos/ZosUpgradeabilityProxy.sol", "file": "./ZosUpgradeabilityProxy.sol", "id": 5031, "nodeType": "ImportDirective", "scope": 5185, "sourceUnit": 5385, "src": "25:38:28", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5032, "name": "ZosBaseUpgradeabilityProxy", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5242, "src": "472:26:28", "typeDescriptions": { "typeIdentifier": "t_contract$_ZosBaseUpgradeabilityProxy_$5242", "typeString": "contract ZosBaseUpgradeabilityProxy" } }, "id": 5033, "nodeType": "InheritanceSpecifier", "src": "472:26:28" } ], "contractDependencies": [ 5242, 5896 ], "contractKind": "contract", "documentation": "@title BaseAdminUpgradeabilityProxy\n@dev This contract combines an upgradeability proxy with an authorization\nmechanism for administrative tasks.\nAll external functions in this contract must be guarded by the\n`ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity\nfeature proposal that would enable this to be done automatically.", "fullyImplemented": true, "id": 5184, "linearizedBaseContracts": [ 5184, 5242, 5896 ], "name": "ZosBaseAdminUpgradeabilityProxy", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": "@dev Emitted when the administration has been transferred.\n@param previousAdmin Address of the previous admin.\n@param newAdmin Address of the new admin.", "id": 5039, "name": "AdminChanged", "nodeType": "EventDefinition", "parameters": { "id": 5038, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5035, "indexed": false, "name": "previousAdmin", "nodeType": "VariableDeclaration", "scope": 5039, "src": "702:21:28", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5034, "name": "address", "nodeType": "ElementaryTypeName", "src": "702:7:28", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5037, "indexed": false, "name": "newAdmin", "nodeType": "VariableDeclaration", "scope": 5039, "src": "725:16:28", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5036, "name": "address", "nodeType": "ElementaryTypeName", "src": "725:7:28", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "701:41:28" }, "src": "683:60:28" }, { "constant": true, "id": 5042, "name": "ADMIN_SLOT", "nodeType": "VariableDeclaration", "scope": 5184, "src": "923:105:28", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 5040, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "923:7:28", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "307831306436613534613437353463383836396436383836623566356437666266613562343532323233376561356336306431316263346537613166663933393062", "id": 5041, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "962:66:28", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_7616251639890160809447714111544359812065171195189364993079081710756264753419_by_1", "typeString": "int_const 7616...(68 digits omitted)...3419" }, "value": "0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b" }, "visibility": "internal" }, { "body": { "id": 5056, "nodeType": "Block", "src": "1237:86:28", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5048, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5044, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6463, "src": "1247:3:28", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5045, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1247:10:28", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 5046, "name": "_admin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5154, "src": "1261:6:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 5047, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1261:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1247:22:28", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 5054, "nodeType": "Block", "src": "1293:26:28", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 5051, "name": "_fallback", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5895, "src": "1301:9:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 5052, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1301:11:28", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5053, "nodeType": "ExpressionStatement", "src": "1301:11:28" } ] }, "id": 5055, "nodeType": "IfStatement", "src": "1243:76:28", "trueBody": { "id": 5050, "nodeType": "Block", "src": "1271:16:28", "statements": [ { "id": 5049, "nodeType": "PlaceholderStatement", "src": "1279:1:28" } ] } } ] }, "documentation": "@dev Modifier to check whether the `msg.sender` is the admin.\nIf it is, it will run the function. Otherwise, it will delegate the call\nto the implementation.", "id": 5057, "name": "ifAdmin", "nodeType": "ModifierDefinition", "parameters": { "id": 5043, "nodeType": "ParameterList", "parameters": [], "src": "1234:2:28" }, "src": "1218:105:28", "visibility": "internal" }, { "body": { "id": 5067, "nodeType": "Block", "src": "1436:26:28", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 5064, "name": "_admin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5154, "src": "1449:6:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 5065, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1449:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5063, "id": 5066, "nodeType": "Return", "src": "1442:15:28" } ] }, "documentation": "@return The address of the proxy admin.", "id": 5068, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 5060, "modifierName": { "argumentTypes": null, "id": 5059, "name": "ifAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5057, "src": "1410:7:28", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "1410:7:28" } ], "name": "admin", "nodeType": "FunctionDefinition", "parameters": { "id": 5058, "nodeType": "ParameterList", "parameters": [], "src": "1398:2:28" }, "returnParameters": { "id": 5063, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5062, "name": "", "nodeType": "VariableDeclaration", "scope": 5068, "src": "1427:7:28", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5061, "name": "address", "nodeType": "ElementaryTypeName", "src": "1427:7:28", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1426:9:28" }, "scope": 5184, "src": "1384:78:28", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": { "id": 5078, "nodeType": "Block", "src": "1587:35:28", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 5075, "name": "_implementation", "nodeType": "Identifier", "overloadedDeclarations": [ 5208 ], "referencedDeclaration": 5208, "src": "1600:15:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 5076, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1600:17:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5074, "id": 5077, "nodeType": "Return", "src": "1593:24:28" } ] }, "documentation": "@return The address of the implementation.", "id": 5079, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 5071, "modifierName": { "argumentTypes": null, "id": 5070, "name": "ifAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5057, "src": "1561:7:28", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "1561:7:28" } ], "name": "implementation", "nodeType": "FunctionDefinition", "parameters": { "id": 5069, "nodeType": "ParameterList", "parameters": [], "src": "1549:2:28" }, "returnParameters": { "id": 5074, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5073, "name": "", "nodeType": "VariableDeclaration", "scope": 5079, "src": "1578:7:28", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5072, "name": "address", "nodeType": "ElementaryTypeName", "src": "1578:7:28", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1577:9:28" }, "scope": 5184, "src": "1526:96:28", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": { "id": 5105, "nodeType": "Block", "src": "1854:168:28", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5091, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5087, "name": "newAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5081, "src": "1868:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5089, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1888:1:28", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5088, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1880:7:28", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5090, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1880:10:28", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "1868:22:28", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "43616e6e6f74206368616e6765207468652061646d696e206f6620612070726f787920746f20746865207a65726f2061646472657373", "id": 5092, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1892:56:28", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_37112268ceb11e15373f32f9374a1f3287d0a3e6e5a9a435ac06367e6cd0cf00", "typeString": "literal_string \"Cannot change the admin of a proxy to the zero address\"" }, "value": "Cannot change the admin of a proxy to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_37112268ceb11e15373f32f9374a1f3287d0a3e6e5a9a435ac06367e6cd0cf00", "typeString": "literal_string \"Cannot change the admin of a proxy to the zero address\"" } ], "id": 5086, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6466, 6467 ], "referencedDeclaration": 6467, "src": "1860:7:28", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 5093, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1860:89:28", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5094, "nodeType": "ExpressionStatement", "src": "1860:89:28" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 5096, "name": "_admin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5154, "src": "1973:6:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 5097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1973:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5098, "name": "newAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5081, "src": "1983:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5095, "name": "AdminChanged", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5039, "src": "1960:12:28", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$returns$__$", "typeString": "function (address,address)" } }, "id": 5099, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1960:32:28", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5100, "nodeType": "EmitStatement", "src": "1955:37:28" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5102, "name": "newAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5081, "src": "2008:8:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5101, "name": "_setAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5165, "src": "1998:9:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 5103, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1998:19:28", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5104, "nodeType": "ExpressionStatement", "src": "1998:19:28" } ] }, "documentation": "@dev Changes the admin of the proxy.\nOnly the current admin can call this function.\n@param newAdmin Address to transfer proxy administration to.", "id": 5106, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 5084, "modifierName": { "argumentTypes": null, "id": 5083, "name": "ifAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5057, "src": "1846:7:28", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "1846:7:28" } ], "name": "changeAdmin", "nodeType": "FunctionDefinition", "parameters": { "id": 5082, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5081, "name": "newAdmin", "nodeType": "VariableDeclaration", "scope": 5106, "src": "1819:16:28", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5080, "name": "address", "nodeType": "ElementaryTypeName", "src": "1819:7:28", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1818:18:28" }, "returnParameters": { "id": 5085, "nodeType": "ParameterList", "parameters": [], "src": "1854:0:28" }, "scope": 5184, "src": "1798:224:28", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": { "id": 5117, "nodeType": "Block", "src": "2269:40:28", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5114, "name": "newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5108, "src": "2286:17:28", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5113, "name": "_upgradeTo", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5222, "src": "2275:10:28", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 5115, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2275:29:28", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5116, "nodeType": "ExpressionStatement", "src": "2275:29:28" } ] }, "documentation": "@dev Upgrade the backing implementation of the proxy.\nOnly the admin can call this function.\n@param newImplementation Address of the new implementation.", "id": 5118, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 5111, "modifierName": { "argumentTypes": null, "id": 5110, "name": "ifAdmin", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5057, "src": "2261:7:28", "