@openzeppelin/upgrades

{ "fileName": "ZosBaseUpgradeabilityProxy.sol", "contractName": "ZosBaseUpgradeabilityProxy", "source": "pragma solidity ^0.5.0;\n\nimport '../../upgradeability/Proxy.sol';\nimport '../../utils/Address.sol';\n\n/**\n * @title BaseUpgradeabilityProxy\n * @dev This contract implements a proxy that allows to change the\n * implementation address to which it will delegate.\n * Such a change is called an implementation upgrade.\n */\ncontract ZosBaseUpgradeabilityProxy is Proxy {\n /**\n * @dev Emitted when the implementation is upgraded.\n * @param implementation Address of the new implementation.\n */\n event Upgraded(address indexed implementation);\n\n /**\n * @dev Storage slot with the address of the current implementation.\n * This is the keccak-256 hash of \"org.zeppelinos.proxy.implementation\", and is\n * validated in the constructor.\n */\n bytes32 internal constant IMPLEMENTATION_SLOT = 0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3;\n\n /**\n * @dev Returns the current implementation.\n * @return Address of the current implementation\n */\n function _implementation() internal view returns (address impl) {\n bytes32 slot = IMPLEMENTATION_SLOT;\n assembly {\n impl := sload(slot)\n }\n }\n\n /**\n * @dev Upgrades the proxy to a new implementation.\n * @param newImplementation Address of the new implementation.\n */\n function _upgradeTo(address newImplementation) internal {\n _setImplementation(newImplementation);\n emit Upgraded(newImplementation);\n }\n\n /**\n * @dev Sets the implementation address of the proxy.\n * @param newImplementation Address of the new implementation.\n */\n function _setImplementation(address newImplementation) internal {\n require(OpenZeppelinUpgradesAddress.isContract(newImplementation), \"Cannot set a proxy implementation to a non-contract address\");\n\n bytes32 slot = IMPLEMENTATION_SLOT;\n\n assembly {\n sstore(slot, newImplementation)\n }\n }\n}\n", "sourcePath": "contracts/mocks/zos/ZosBaseUpgradeabilityProxy.sol", "sourceMap": "317:1534:29:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;317:1534:29;;;;;;;", "deployedSourceMap": "317:1534:29:-;;;453:11:39;:9;:11::i;:::-;317:1534:29;1952:90:39;1988:15;:13;:15::i;:::-;2009:28;2019:17;:15;:17::i;:::-;2009:9;:28::i;:::-;1952:90::o;1818:39::-;:::o;974:156:29:-;1024:12;1044;794:66;1059:19;;1044:34;;1115:4;1109:11;1101:19;;1093:33;;:::o;878:731:39:-;1180:12;1177:1;1174;1161:32;1370:1;1367;1353:12;1350:1;1334:14;1329:3;1316:56;1434:14;1431:1;1428;1413:36;1464:6;1524:1;1519:36;;;;1582:14;1579:1;1572:25;1519:36;1538:14;1535:1;1528:25", "abi": [ { "payable": true, "stateMutability": "payable", "type": "fallback" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "implementation", "type": "address" } ], "name": "Upgraded", "type": "event" } ], "ast": { "absolutePath": "contracts/mocks/zos/ZosBaseUpgradeabilityProxy.sol", "exportedSymbols": { "ZosBaseUpgradeabilityProxy": [ 5242 ] }, "id": 5243, "nodeType": "SourceUnit", "nodes": [ { "id": 5186, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:29" }, { "absolutePath": "contracts/upgradeability/Proxy.sol", "file": "../../upgradeability/Proxy.sol", "id": 5187, "nodeType": "ImportDirective", "scope": 5243, "sourceUnit": 5897, "src": "25:40:29", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 5188, "nodeType": "ImportDirective", "scope": 5243, "sourceUnit": 6390, "src": "66:33:29", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5189, "name": "Proxy", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5896, "src": "356:5:29", "typeDescriptions": { "typeIdentifier": "t_contract$_Proxy_$5896", "typeString": "contract Proxy" } }, "id": 5190, "nodeType": "InheritanceSpecifier", "src": "356:5:29" } ], "contractDependencies": [ 5896 ], "contractKind": "contract", "documentation": "@title BaseUpgradeabilityProxy\n@dev This contract implements a proxy that allows to change the\nimplementation address to which it will delegate.\nSuch a change is called an implementation upgrade.", "fullyImplemented": true, "id": 5242, "linearizedBaseContracts": [ 5242, 5896 ], "name": "ZosBaseUpgradeabilityProxy", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": "@dev Emitted when the implementation is upgraded.\n@param implementation Address of the new implementation.", "id": 5194, "name": "Upgraded", "nodeType": "EventDefinition", "parameters": { "id": 5193, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5192, "indexed": true, "name": "implementation", "nodeType": "VariableDeclaration", "scope": 5194, "src": "510:30:29", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5191, "name": "address", "nodeType": "ElementaryTypeName", "src": "510:7:29", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "509:32:29" }, "src": "495:47:29" }, { "constant": true, "id": 5197, "name": "IMPLEMENTATION_SLOT", "nodeType": "VariableDeclaration", "scope": 5242, "src": "746:114:29", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 5195, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "746:7:29", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "307837303530633965306634636137363963363962643361386566373430626333373933346638653263303336653561373233666438656530343865643366386333", "id": 5196, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "794:66:29", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_50801780122331352337026042894847907698553222651959119521779622085092237899971_by_1", "typeString": "int_const 5080...(69 digits omitted)...9971" }, "value": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3" }, "visibility": "internal" }, { "body": { "id": 5207, "nodeType": "Block", "src": "1038:92:29", "statements": [ { "assignments": [ 5203 ], "declarations": [ { "constant": false, "id": 5203, "name": "slot", "nodeType": "VariableDeclaration", "scope": 5207, "src": "1044:12:29", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 5202, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1044:7:29", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, 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"newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5210, "src": "1346:17:29", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5213, "name": "_setImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5241, "src": "1327:18:29", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 5215, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1327:37:29", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5216, "nodeType": "ExpressionStatement", "src": "1327:37:29" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5218, "name": "newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5210, "src": "1384:17:29", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5217, "name": "Upgraded", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5194, "src": "1375:8:29", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 5219, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1375:27:29", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5220, "nodeType": "EmitStatement", "src": "1370:32:29" } ] }, "documentation": "@dev Upgrades the proxy to a new implementation.\n@param newImplementation Address of the new implementation.", "id": 5222, "implemented": true, "kind": "function", "modifiers": [], "name": "_upgradeTo", "nodeType": "FunctionDefinition", "parameters": { "id": 5211, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5210, "name": "newImplementation", "nodeType": "VariableDeclaration", "scope": 5222, "src": "1285:25:29", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5209, "name": "address", "nodeType": "ElementaryTypeName", "src": "1285:7:29", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1284:27:29" }, "returnParameters": { "id": 5212, "nodeType": "ParameterList", "parameters": [], "src": "1321:0:29" }, "scope": 5242, "src": "1265:142:29", "stateMutability": 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