{ "fileName": "BaseUpgradeabilityProxy.sol", "contractName": "BaseUpgradeabilityProxy", "source": "pragma solidity ^0.6.0;\n// SPDX-License-Identifier: MIT\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 impl Address of the current implementation\n */\n function _implementation() internal view override 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/upgradeability/BaseUpgradeabilityProxy.sol", "sourceMap": "327:1554:36:-:0;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "327:1554:36:-:0;;;;;;;;;;;;514:50:39;548:11;:9;:11;;:::i;:::-;514:50;327:1554:36;;459:51:39;494:11;:9;:11;;:::i;:::-;459:51;327:1554:36;2075:90:39;2111:15;:13;:15;;:::i;:::-;2132:28;2142:17;:15;:17;;:::i;:::-;2132:9;:28;;:::i;:::-;2075:90;:::o;1933:47::-;;:::o;995:165:36:-;1054:12;1074;810:66;1089:19;;1074:34;;1145:4;1139:11;1131:19;;1123:33;;;:::o;981:743:39:-;1283:14;1280:1;1277;1264:34;1479:1;1476;1460:14;1457:1;1441:14;1434:5;1421:60;1543:16;1540:1;1537;1522:38;1575:6;1635:1;1630:38;;;;1695:16;1692:1;1685:27;1568:146;;1630:38;1649:16;1646:1;1639:27;1568:146;;1048:672;;;:::o", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "implementation", "type": "address" } ], "name": "Upgraded", "type": "event" }, { "stateMutability": "payable", "type": "fallback" }, { "stateMutability": "payable", "type": "receive" } ], "ast": { "absolutePath": "contracts/upgradeability/BaseUpgradeabilityProxy.sol", "exportedSymbols": { "BaseUpgradeabilityProxy": [ 6064 ] }, "id": 6065, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 6001, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:36" }, { "absolutePath": "contracts/upgradeability/Proxy.sol", "file": "./Proxy.sol", "id": 6002, "nodeType": "ImportDirective", "scope": 6065, "sourceUnit": 6258, "src": "57:21:36", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/utils/Address.sol", "file": "../utils/Address.sol", "id": 6003, "nodeType": "ImportDirective", "scope": 6065, "sourceUnit": 6775, "src": "79:30:36", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 6005, "name": "Proxy", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6257, "src": "363:5:36", "typeDescriptions": { "typeIdentifier": "t_contract$_Proxy_$6257", "typeString": "contract Proxy" } }, "id": 6006, "nodeType": "InheritanceSpecifier", "src": "363:5:36" } ], "contractDependencies": [ 6257 ], "contractKind": "contract", "documentation": { "id": 6004, "nodeType": "StructuredDocumentation", "src": "111:215:36", "text": " @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." }, "fullyImplemented": true, "id": 6064, "linearizedBaseContracts": [ 6064, 6257 ], "name": "BaseUpgradeabilityProxy", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": { "id": 6007, "nodeType": "StructuredDocumentation", "src": "373:126:36", "text": " @dev Emitted when the implementation is upgraded.\n @param implementation Address of the new implementation." }, "id": 6011, "name": "Upgraded", "nodeType": "EventDefinition", "parameters": { 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