{ "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, 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