{ "fileName": "ZosBaseUpgradeabilityProxy.sol", "contractName": "ZosBaseUpgradeabilityProxy", "source": "pragma solidity ^0.6.0;\n// SPDX-License-Identifier: MIT\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 impl Address of the current implementation\n */\n function _implementation() internal override 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": "349:1548:29:-:0;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "349:1548:29:-:0;;;;;;;;;;;;514:50:39;548:11;:9;:11;;:::i;:::-;514:50;349:1548:29;;459:51:39;494:11;:9;:11;;:::i;:::-;459:51;349:1548:29;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;1011:165:29:-;1070:12;1090;826:66;1105:19;;1090:34;;1161:4;1155:11;1147:19;;1139:33;;;:::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": 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