{ "contractName": "BaseUpgradeabilityProxy", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "implementation", "type": "address" } ], "name": "Upgraded", "type": "event" }, { "payable": true, "stateMutability": "payable", "type": "fallback" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"implementation\",\"type\":\"address\"}],\"name\":\"Upgraded\",\"type\":\"event\"},{\"payable\":true,\"stateMutability\":\"payable\",\"type\":\"fallback\"}],\"devdoc\":{\"details\":\"This contract implements a proxy that allows to change the implementation address to which it will delegate. Such a change is called an implementation upgrade.\",\"methods\":{},\"title\":\"BaseUpgradeabilityProxy\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol\":\"BaseUpgradeabilityProxy\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol\":{\"keccak256\":\"0x1b37f808dc0a45976ad23aa53908c485a74a4d9fbd03066a5ab399c46436e570\",\"urls\":[\"bzz-raw://de04959e1261bbc2ee53a88b98469a888a2f2fa49c07ea87a5d646a8fe438558\",\"dweb:/ipfs/QmUmYQaNnAMfvbfKLniFLHyBzsH77bCMf9NpNSfndfuqWh\"]},\"@openzeppelin/upgrades/contracts/upgradeability/Proxy.sol\":{\"keccak256\":\"0xd8074ae5fa7ee6384ca8196a896612fb044bbf4ff4b7336d03cd97845000ac21\",\"urls\":[\"bzz-raw://3a111e1dc777d80e6c2ad41c6ff2bfb3ae8f61658fd6580ddf9ba9ab0d25a354\",\"dweb:/ipfs/QmSfwvUqqiownzHeMmUiYkejWs6FXR2KLtHQnSzP6FivTj\"]},\"@openzeppelin/upgrades/contracts/utils/Address.sol\":{\"keccak256\":\"0x7be7f8e4c08bc70ff9815e3f11c569f42aa3c447b5bc61fd75fb5cec97f63a9f\",\"urls\":[\"bzz-raw://f301a9226d637e1593916ba2de7b0b28c35f2adc3ca8526289fe1eedafa83bc2\",\"dweb:/ipfs/QmPb991LE8nyvhB4BkX46P1Pan2ijH9tfqWwLAz65VUUKs\"]}},\"version\":1}", "bytecode": "0x6080604052348015600f57600080fd5b50609d8061001e6000396000f3fe6080604052600a600c565b005b6012601e565b601e601a6020565b6045565b565b7f360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc5490565b3660008037600080366000845af43d6000803e8080156063573d6000f35b3d6000fdfea265627a7a723158206606fb18e07f3aea76be1cb4652632f315629ce93487993a44dde0efaf4e3c9064736f6c63430005110032", "deployedBytecode": "0x6080604052600a600c565b005b6012601e565b601e601a6020565b6045565b565b7f360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc5490565b3660008037600080366000845af43d6000803e8080156063573d6000f35b3d6000fdfea265627a7a723158206606fb18e07f3aea76be1cb4652632f315629ce93487993a44dde0efaf4e3c9064736f6c63430005110032", "sourceMap": "295:1540:34:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;295:1540:34;;;;;;;", "deployedSourceMap": "295:1540:34:-;;;453:11:35;:9;:11::i;:::-;295:1540:34;1952:90:35;1988:15;:13;:15::i;:::-;2009:28;2019:17;:15;:17::i;:::-;2009:9;:28::i;:::-;1952:90::o;958:156:34:-;778:66;1093:11;;1077:33::o;878:731:35:-;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;1519:36;;;;1582:14;1579:1;1572:25;1519:36;1538:14;1535:1;1528:25", "source": "pragma solidity ^0.5.0;\n\nimport './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 BaseUpgradeabilityProxy 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 \"eip1967.proxy.implementation\" subtracted by 1, and is\n * validated in the constructor.\n */\n bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\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": "@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol", "ast": { "absolutePath": "@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol", "exportedSymbols": { "BaseUpgradeabilityProxy": [ 8214 ] }, "id": 8215, "nodeType": "SourceUnit", "nodes": [ { "id": 8158, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:34" }, { "absolutePath": "@openzeppelin/upgrades/contracts/upgradeability/Proxy.sol", "file": "./Proxy.sol", "id": 8159, "nodeType": "ImportDirective", "scope": 8215, "sourceUnit": 8253, "src": "25:21:34", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/upgrades/contracts/utils/Address.sol", "file": "../utils/Address.sol", "id": 8160, "nodeType": "ImportDirective", "scope": 8215, "sourceUnit": 8444, "src": "47:30:34", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 8161, "name": "Proxy", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 8252, "src": "331:5:34", "typeDescriptions": { "typeIdentifier": "t_contract$_Proxy_$8252", "typeString": "contract Proxy" } }, "id": 8162, "nodeType": "InheritanceSpecifier", "src": "331:5:34" } ], "contractDependencies": [ 8252 ], "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": 8214, "linearizedBaseContracts": [ 8214, 8252 ], "name": "BaseUpgradeabilityProxy", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": "@dev Emitted when the implementation is upgraded.\n@param implementation Address of the new implementation.", "id": 8166, "name": "Upgraded", "nodeType": "EventDefinition", "parameters": { "id": 8165, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 8164, "indexed": true, "name": "implementation", "nodeType": "VariableDeclaration", "scope": 8166, "src": "485:30:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 8163, "name": "address", "nodeType": "ElementaryTypeName", "src": "485:7:34", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "484:32:34" }, "src": "470:47:34" }, { "constant": true, "id": 8169, "name": "IMPLEMENTATION_SLOT", "nodeType": "VariableDeclaration", "scope": 8214, "src": "730:114:34", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 8167, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "730:7:34", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "307833363038393461313362613161333231303636376338323834393264623938646361336532303736636333373335613932306133636135303564333832626263", "id": 8168, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "778:66:34", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_24440054405305269366569402256811496959409073762505157381672968839269610695612_by_1", "typeString": "int_const 2444...(69 digits omitted)...5612" }, "value": "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc" }, "visibility": "internal" }, { "body": { "id": 8179, "nodeType": "Block", "src": "1022:92:34", "statements": [ { "assignments": [ 8175 ], "declarations": [ { "constant": false, "id": 8175, "name": "slot", "nodeType": "VariableDeclaration", "scope": 8179, "src": "1028:12:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 8174, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1028:7:34", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 8177, "initialValue": { "argumentTypes": null, "id": 8176, "name": "IMPLEMENTATION_SLOT", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8169, "src": "1043:19:34", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "1028:34:34" }, { "externalReferences": [ { "impl": { "declaration": 8172, "isOffset": false, "isSlot": false, "src": "1085:4:34", "valueSize": 1 } }, { "slot": { "declaration": 8175, "isOffset": false, "isSlot": false, "src": "1099:4:34", "valueSize": 1 } } ], "id": 8178, "nodeType": "InlineAssembly", "operations": "{ impl := sload(slot) }", "src": "1068:42:34" } ] }, "documentation": "@dev Returns the current implementation.\n@return Address of the current implementation", "id": 8180, "implemented": true, "kind": "function", "modifiers": [], "name": "_implementation", "nodeType": "FunctionDefinition", "parameters": { "id": 8170, "nodeType": "ParameterList", "parameters": [], "src": "982:2:34" }, "returnParameters": { "id": 8173, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 8172, "name": "impl", "nodeType": "VariableDeclaration", "scope": 8180, "src": "1008:12:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 8171, "name": "address", "nodeType": "ElementaryTypeName", "src": "1008:7:34", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1007:14:34" }, "scope": 8214, "src": "958:156:34", "stateMutability": "view", "superFunction": 8228, "visibility": "internal" }, { "body": { "id": 8193, "nodeType": "Block", "src": "1305:86:34", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 8186, "name": "newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8182, "src": "1330:17:34", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 8185, "name": "_setImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8213, "src": "1311:18:34", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 8187, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1311:37:34", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 8188, "nodeType": "ExpressionStatement", "src": "1311:37:34" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 8190, "name": "newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8182, "src": "1368:17:34", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 8189, "name": "Upgraded", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8166, "src": "1359:8:34", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 8191, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1359:27:34", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 8192, "nodeType": "EmitStatement", "src": "1354:32:34" } ] }, "documentation": "@dev Upgrades the proxy to a new implementation.\n@param newImplementation Address of the new implementation.", "id": 8194, "implemented": true, "kind": "function", "modifiers": [], "name": "_upgradeTo", "nodeType": "FunctionDefinition", "parameters": { "id": 8183, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 8182, "name": "newImplementation", "nodeType": "VariableDeclaration", "scope": 8194, "src": "1269:25:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 8181, "name": "address", "nodeType": "ElementaryTypeName", "src": "1269:7:34", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1268:27:34" }, "returnParameters": { "id": 8184, "nodeType": "ParameterList", "parameters": [], "src": "1305:0:34" }, "scope": 8214, "src": "1249:142:34", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 8212, "nodeType": "Block", "src": "1592:241:34", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 8202, "name": "newImplementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8196, "src": "1645:17:34", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 8200, "name": "OpenZeppelinUpgradesAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8443, "src": "1606:27:34", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_OpenZeppelinUpgradesAddress_$8443_$", "typeString": "type(library OpenZeppelinUpgradesAddress)" } }, "id": 8201, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 8442, "src": "1606:38:34", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$", "typeString": "function (address) view returns (bool)" } }, "id": 8203, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1606:57:34", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "43616e6e6f742073657420612070726f787920696d706c656d656e746174696f6e20746f2061206e6f6e2d636f6e74726163742061646472657373", "id": 8204, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1665:61:34", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b5145a64ce8c406e5785204fe5b300f0ceda96d6636350b38fdccb9cd8c0c37c", "typeString": "literal_string \"Cannot set a proxy implementation to a non-contract address\"" }, "value": "Cannot set a proxy implementation to a non-contract address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b5145a64ce8c406e5785204fe5b300f0ceda96d6636350b38fdccb9cd8c0c37c", "typeString": "literal_string \"Cannot set a proxy implementation to a non-contract address\"" } ], "id": 8199, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 8537, 8538 ], "referencedDeclaration": 8538, "src": "1598:7:34", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 8205, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1598:129:34", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 8206, "nodeType": "ExpressionStatement", "src": "1598:129:34" }, { "assignments": [ 8208 ], "declarations": [ { "constant": false, "id": 8208, "name": "slot", "nodeType": "VariableDeclaration", "scope": 8212, "src": "1734:12:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 8207, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1734:7:34", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 8210, "initialValue": { "argumentTypes": null, "id": 8209, "name": "IMPLEMENTATION_SLOT", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 8169, "src": "1749:19:34", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "1734:34:34" }, { "externalReferences": [ { "slot": { "declaration": 8208, "isOffset": false, "isSlot": false, "src": "1799:4:34", "valueSize": 1 } }, { "newImplementation": { "declaration": 8196, "isOffset": false, "isSlot": false, "src": "1805:17:34", "valueSize": 1 } } ], "id": 8211, "nodeType": "InlineAssembly", "operations": "{\n sstore(slot, newImplementation)\n}", "src": "1775:54:34" } ] }, "documentation": "@dev Sets the implementation address of the proxy.\n@param newImplementation Address of the new implementation.", "id": 8213, "implemented": true, "kind": "function", "modifiers": [], "name": "_setImplementation", "nodeType": "FunctionDefinition", "parameters": { "id": 8197, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 8196, "name": "newImplementation", "nodeType": "VariableDeclaration", "scope": 8213, "src": "1556:25:34", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 8195, "name": "address", "nodeType": "ElementaryTypeName", "src": "1556:7:34", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1555:27:34" }, "returnParameters": { "id": 8198, "nodeType": "ParameterList", "parameters": [], "src": "1592:0:34" }, "scope": 8214, "src": "1528:305:34", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 8215, "src": "295:1540:34" } ], "src": "0:1836:34" }, "legacyAST": { "absolutePath": "@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol", "exportedSymbols": { "BaseUpgradeabilityProxy": [ 8214 ] }, "id": 8215, "nodeType": "SourceUnit", "nodes": [ { "id": 8158, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:34" }, { "absolutePath": "@openzeppelin/upgrades/contracts/upgradeability/Proxy.sol", "file": "./Proxy.sol", "id": 8159, "nodeType": "ImportDirective", "scope": 8215, "sourceUnit": 8253, "src": "25:21:34", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/upgrades/contracts/utils/Address.sol", "file": "../utils/Address.sol", "id": 8160, "nodeType": "ImportDirective", "scope": 8215, "sourceUnit": 8444, "src": "47:30:34", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { 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}, "compiler": { "name": "solc", "version": "0.5.17+commit.d19bba13.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.3.0", "updatedAt": "2020-12-11T05:03:09.370Z", "devdoc": { "details": "This contract implements a proxy that allows to change the implementation address to which it will delegate. Such a change is called an implementation upgrade.", "methods": {}, "title": "BaseUpgradeabilityProxy" }, "userdoc": { "methods": {} } }