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Contract

0x35D2f009F4886FdE9e2dEf2E3fa487f3445Ad5AB

Balance
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Transactions sent
1
Type
Contract · 4,724 bytes of code

Api3ReaderProxyV1 Verified

Compiler
solc 0.8.27+commit.40a35a09
Language
Solidity
Optimization
Yes, 1000 runs
EVM version
paris
License
—
Verified
2026-10-12

contracts/api3-server-v1/proxies/Api3ReaderProxyV1.sol

and 25 more files

Solidity
// SPDX-License-Identifier: MIT
pragma solidity 0.8.27;

import "../../vendor/@openzeppelin/contracts@5.0.2/proxy/utils/UUPSUpgradeable.sol";
import "../../vendor/@openzeppelin/contracts-upgradeable@5.0.2/access/OwnableUpgradeable.sol";
import "../../vendor/@chainlink/contracts@1.2.0/src/v0.8/shared/interfaces/AggregatorV2V3Interface.sol";
import "./interfaces/IApi3ReaderProxyV1.sol";
import "../interfaces/IApi3ServerV1.sol";
import "../interfaces/IApi3ServerV1OevExtension.sol";

/// @title UUPS-upgradeable IApi3ReaderProxy and AggregatorV2V3Interface
/// implementation that is designed to be deployed by Api3ReaderProxyV1Factory
/// @notice The owner of this contract is allowed to upgrade it. In the case
/// that it is deployed by Api3ReaderProxyV1Factory, the owner will be the
/// owner of Api3ReaderProxyV1Factory at the time of deployment.
/// @dev For a gas-cheap `read()` implementation, this upgradeable contract
/// uses immutable variables (rather than initializable ones). To enable this,
/// an Api3ReaderProxyV1 needs to be deployed for each unique combination of
/// variables. The end user does not need to concern themselves with this, as
/// Api3ReaderProxyV1Factory abstracts this detail away.
/// Refer to https://github.com/api3dao/migrate-from-chainlink-to-api3 for more
/// information about the Chainlink interface implementation.
contract Api3ReaderProxyV1 is
    UUPSUpgradeable,
    OwnableUpgradeable,
    AggregatorV2V3Interface,
    IApi3ReaderProxyV1
{
    /// @notice Api3ServerV1 contract address
    address public immutable override api3ServerV1;

    /// @notice Api3ServerV1OevExtension contract address
    address public immutable override api3ServerV1OevExtension;

    /// @notice dAPI name as a bytes32 string
    bytes32 public immutable override dapiName;

    /// @notice dApp ID
    uint256 public immutable override dappId;

    // Api3ServerV1 interface expects the dAPI name hash. keccak256 is
    // typically expensive on ZK roll-ups, so we compute it once and store it
    // to use during reads.
    bytes32 private immutable dapiNameHash;

    /// @dev Parameters are validated by Api3ReaderProxyV1Factory
    /// @param api3ServerV1OevExtension_ Api3ServerV1OevExtension contract
    /// address
    /// @param dapiName_ dAPI name as a bytes32 string
    /// @param dappId_ dApp ID
    constructor(
        address api3ServerV1OevExtension_,
        bytes32 dapiName_,
        uint256 dappId_
    ) {
        api3ServerV1OevExtension = api3ServerV1OevExtension_;
        api3ServerV1 = IApi3ServerV1OevExtension(api3ServerV1OevExtension_)
            .api3ServerV1();
        dapiName = dapiName_;
        dappId = dappId_;
        dapiNameHash = keccak256(abi.encodePacked(dapiName));
        _disableInitializers();
    }

    /// @notice Initializes the contract with the initial owner
    /// @param initialOwner Initial owner
    function initialize(address initialOwner) external override initializer {
        __Ownable_init(initialOwner);
    }

    /// @notice Returns the current value and timestamp of the API3 data feed
    /// associated with the proxy contract
    /// @dev Reads the base feed that is associated to the dAPI and the OEV
    /// feed that is associated to the dApp–dAPI pair, and returns the value
    /// that is updated more recently
    /// @return value Data feed value
    /// @return timestamp Data feed timestamp
    function read()
        public
        view
        override
        returns (int224 value, uint32 timestamp)
    {
        bytes32 dataFeedId = IApi3ServerV1(api3ServerV1)
            .dapiNameHashToDataFeedId(dapiNameHash);
        if (dataFeedId == bytes32(0)) {
            revert DapiNameIsNotSet();
        }
        (int224 baseDapiValue, uint32 baseDapiTimestamp) = IApi3ServerV1(
            api3ServerV1
        ).dataFeeds(dataFeedId);
        (
            int224 oevDapiValue,
            uint32 oevDapiTimestamp
        ) = IApi3ServerV1OevExtension(api3ServerV1OevExtension).oevDataFeed(
                dappId,
                dataFeedId
            );
        if (oevDapiTimestamp > baseDapiTimestamp) {
            (value, timestamp) = (oevDapiValue, oevDapiTimestamp);
        } else {
            (value, timestamp) = (baseDapiValue, baseDapiTimestamp);
        }
        if (timestamp == 0) {
            revert DataFeedIsNotInitialized();
        }
    }

    /// @dev AggregatorV2V3Interface users are already responsible with
    /// validating the values that they receive (e.g., revert if the spot price
    /// of an asset is negative). Therefore, this contract omits validation.
    function latestAnswer() external view override returns (int256 value) {
        (value, ) = read();
    }

    /// @dev A Chainlink feed contract returns the block timestamp at which the
    /// feed was last updated. On the other hand, an API3 feed timestamp
    /// denotes the point in time at which the first-party oracles signed the
    /// data used to do the last update. We find this to be a reasonable
    /// approximation, considering that usually the timestamp is only used to
    /// check if the last update is stale.
    function latestTimestamp()
        external
        view
        override
        returns (uint256 timestamp)
    {
        (, timestamp) = read();
    }

    /// @dev API3 feeds are updated asynchronously and not in rounds
    function latestRound() external pure override returns (uint256) {
        revert FunctionIsNotSupported();
    }

    /// @dev Functions that use the round ID as an argument are not supported
    function getAnswer(uint256) external pure override returns (int256) {
        revert FunctionIsNotSupported();
    }

    /// @dev Functions that use the round ID as an argument are not supported
    function getTimestamp(uint256) external pure override returns (uint256) {
        revert FunctionIsNotSupported();
    }

    /// @dev API3 feeds always use 18 decimals
    function decimals() external pure override returns (uint8) {
        return 18;
    }

    /// @dev The dApp ID and dAPI name act as the description, and this is left
    /// empty to save gas on contract deployment
    function description() external pure override returns (string memory) {
        return "";
    }

    /// @dev A unique version is chosen to easily check if an unverified
    /// contract that acts as a Chainlink feed is an Api3ReaderProxyV1
    function version() external pure override returns (uint256) {
        return 4913;
    }

    /// @dev Functions that use the round ID as an argument are not supported
    function getRoundData(
        uint80
    )
        external
        pure
        override
        returns (uint80, int256, uint256, uint256, uint80)
    {
        revert FunctionIsNotSupported();
    }

    /// @dev Rounds IDs are returned as `0` as invalid values.
    /// Similar to `latestAnswer()`, we leave the validation of the returned
    /// value to the caller.
    function latestRoundData()
        external
        view
        override
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        )
    {
        roundId = answeredInRound = 0;
        (answer, startedAt) = read();
        updatedAt = startedAt;
    }

    /// @param newImplementation New implementation contract address
    /// @dev Only the owner can upgrade this contract
    function _authorizeUpgrade(
        address newImplementation
    ) internal virtual override onlyOwner {}
}

Other files

  • contracts/access/interfaces/IAccessControlRegistryAdminned.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "../../utils/interfaces/ISelfMulticall.sol";
    
    interface IAccessControlRegistryAdminned is ISelfMulticall {
        function accessControlRegistry() external view returns (address);
    
        function adminRoleDescription() external view returns (string memory);
    }
    
  • contracts/access/interfaces/IAccessControlRegistryAdminnedWithManager.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./IAccessControlRegistryAdminned.sol";
    
    interface IAccessControlRegistryAdminnedWithManager is
        IAccessControlRegistryAdminned
    {
        function manager() external view returns (address);
    
        function adminRole() external view returns (bytes32);
    }
    
  • contracts/api3-server-v1/interfaces/IApi3ServerV1.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./IOevDapiServer.sol";
    import "./IBeaconUpdatesWithSignedData.sol";
    
    interface IApi3ServerV1 is IOevDapiServer, IBeaconUpdatesWithSignedData {
        function readDataFeedWithId(
            bytes32 dataFeedId
        ) external view returns (int224 value, uint32 timestamp);
    
        function readDataFeedWithDapiNameHash(
            bytes32 dapiNameHash
        ) external view returns (int224 value, uint32 timestamp);
    
        function readDataFeedWithIdAsOevProxy(
            bytes32 dataFeedId
        ) external view returns (int224 value, uint32 timestamp);
    
        function readDataFeedWithDapiNameHashAsOevProxy(
            bytes32 dapiNameHash
        ) external view returns (int224 value, uint32 timestamp);
    
        function dataFeeds(
            bytes32 dataFeedId
        ) external view returns (int224 value, uint32 timestamp);
    
        function oevProxyToIdToDataFeed(
            address proxy,
            bytes32 dataFeedId
        ) external view returns (int224 value, uint32 timestamp);
    }
    
  • contracts/api3-server-v1/interfaces/IApi3ServerV1OevExtension.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "../../access/interfaces/IAccessControlRegistryAdminnedWithManager.sol";
    import "../interfaces/IDataFeedServer.sol";
    
    interface IApi3ServerV1OevExtension is
        IAccessControlRegistryAdminnedWithManager,
        IDataFeedServer
    {
        event Withdrew(address recipient, uint256 amount, address sender);
    
        event PaidOevBid(
            uint256 indexed dappId,
            address indexed updater,
            uint256 bidAmount,
            uint256 signedDataTimestampCutoff,
            address auctioneer
        );
    
        event UpdatedDappOevDataFeed(
            uint256 indexed dappId,
            address indexed updater,
            bytes32 dataFeedId,
            int224 updatedValue,
            uint32 updatedTimestamp
        );
    
        function withdraw(address recipient, uint256 amount) external;
    
        function payOevBid(
            uint256 dappId,
            uint256 bidAmount,
            uint32 signedDataTimestampCutoff,
            bytes calldata signature,
            bytes calldata data
        ) external;
    
        function updateDappOevDataFeed(
            uint256 dappId,
            bytes[] calldata signedData
        )
            external
            returns (
                bytes32 baseDataFeedId,
                int224 updatedValue,
                uint32 updatedTimestamp
            );
    
        function simulateDappOevDataFeedUpdate(
            uint256 dappId,
            bytes[] calldata signedData
        )
            external
            returns (
                bytes32 baseDataFeedId,
                int224 updatedValue,
                uint32 updatedTimestamp
            );
    
        function simulateExternalCall(
            address target,
            bytes calldata data
        ) external returns (bytes memory);
    
        function oevDataFeed(
            uint256 dappId,
            bytes32 dataFeedId
        ) external view returns (int224 value, uint32 timestamp);
    
        // solhint-disable-next-line func-name-mixedcase
        function WITHDRAWER_ROLE_DESCRIPTION()
            external
            view
            returns (string memory);
    
        // solhint-disable-next-line func-name-mixedcase
        function AUCTIONEER_ROLE_DESCRIPTION()
            external
            view
            returns (string memory);
    
        function withdrawerRole() external view returns (bytes32);
    
        function auctioneerRole() external view returns (bytes32);
    
        function api3ServerV1() external view returns (address);
    
        function dappIdToLastPaidBid(
            uint256 dappId
        ) external view returns (address updater, uint32 endTimestamp);
    }
    
  • contracts/api3-server-v1/interfaces/IBeaconUpdatesWithSignedData.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./IDataFeedServer.sol";
    
    interface IBeaconUpdatesWithSignedData is IDataFeedServer {
        function updateBeaconWithSignedData(
            address airnode,
            bytes32 templateId,
            uint256 timestamp,
            bytes calldata data,
            bytes calldata signature
        ) external returns (bytes32 beaconId);
    }
    
  • contracts/api3-server-v1/interfaces/IDapiServer.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "../../access/interfaces/IAccessControlRegistryAdminnedWithManager.sol";
    import "./IDataFeedServer.sol";
    
    interface IDapiServer is
        IAccessControlRegistryAdminnedWithManager,
        IDataFeedServer
    {
        event SetDapiName(
            bytes32 indexed dataFeedId,
            bytes32 indexed dapiName,
            address sender
        );
    
        function setDapiName(bytes32 dapiName, bytes32 dataFeedId) external;
    
        function dapiNameToDataFeedId(
            bytes32 dapiName
        ) external view returns (bytes32);
    
        // solhint-disable-next-line func-name-mixedcase
        function DAPI_NAME_SETTER_ROLE_DESCRIPTION()
            external
            view
            returns (string memory);
    
        function dapiNameSetterRole() external view returns (bytes32);
    
        function dapiNameHashToDataFeedId(
            bytes32 dapiNameHash
        ) external view returns (bytes32 dataFeedId);
    }
    
  • contracts/api3-server-v1/interfaces/IDataFeedServer.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "../../utils/interfaces/IExtendedSelfMulticall.sol";
    
    interface IDataFeedServer is IExtendedSelfMulticall {
        event UpdatedBeaconWithSignedData(
            bytes32 indexed beaconId,
            int224 value,
            uint32 timestamp
        );
    
        event UpdatedBeaconSetWithBeacons(
            bytes32 indexed beaconSetId,
            int224 value,
            uint32 timestamp
        );
    
        function updateBeaconSetWithBeacons(
            bytes32[] memory beaconIds
        ) external returns (bytes32 beaconSetId);
    }
    
  • contracts/api3-server-v1/interfaces/IOevDapiServer.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./IOevDataFeedServer.sol";
    import "./IDapiServer.sol";
    
    interface IOevDapiServer is IOevDataFeedServer, IDapiServer {}
    
  • contracts/api3-server-v1/interfaces/IOevDataFeedServer.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./IDataFeedServer.sol";
    
    interface IOevDataFeedServer is IDataFeedServer {
        event UpdatedOevProxyBeaconWithSignedData(
            bytes32 indexed beaconId,
            address indexed proxy,
            bytes32 indexed updateId,
            int224 value,
            uint32 timestamp
        );
    
        event UpdatedOevProxyBeaconSetWithSignedData(
            bytes32 indexed beaconSetId,
            address indexed proxy,
            bytes32 indexed updateId,
            int224 value,
            uint32 timestamp
        );
    
        event Withdrew(
            address indexed oevProxy,
            address oevBeneficiary,
            uint256 amount
        );
    
        function updateOevProxyDataFeedWithSignedData(
            address oevProxy,
            bytes32 dataFeedId,
            bytes32 updateId,
            uint256 timestamp,
            bytes calldata data,
            bytes[] calldata packedOevUpdateSignatures
        ) external payable;
    
        function withdraw(address oevProxy) external;
    
        function oevProxyToBalance(
            address oevProxy
        ) external view returns (uint256 balance);
    }
    
  • contracts/api3-server-v1/proxies/interfaces/IApi3ReaderProxyV1.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.4;
    
    import "../../../interfaces/IApi3ReaderProxy.sol";
    
    interface IApi3ReaderProxyV1 is IApi3ReaderProxy {
        error DapiNameIsNotSet();
    
        error DataFeedIsNotInitialized();
    
        error FunctionIsNotSupported();
    
        function initialize(address initialOwner) external;
    
        function api3ServerV1() external returns (address);
    
        function api3ServerV1OevExtension() external returns (address);
    
        function dapiName() external returns (bytes32);
    
        function dappId() external returns (uint256);
    }
    
  • contracts/vendor/@openzeppelin/contracts-upgradeable@5.0.2/utils/ContextUpgradeable.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
    
    pragma solidity ^0.8.20;
    import {Initializable} from "../proxy/utils/Initializable.sol";
    
    /**
     * @dev Provides information about the current execution context, including the
     * sender of the transaction and its data. While these are generally available
     * via msg.sender and msg.data, they should not be accessed in such a direct
     * manner, since when dealing with meta-transactions the account sending and
     * paying for execution may not be the actual sender (as far as an application
     * is concerned).
     *
     * This contract is only required for intermediate, library-like contracts.
     */
    abstract contract ContextUpgradeable is Initializable {
        function __Context_init() internal onlyInitializing {
        }
    
        function __Context_init_unchained() internal onlyInitializing {
        }
        function _msgSender() internal view virtual returns (address) {
            return msg.sender;
        }
    
        function _msgData() internal view virtual returns (bytes calldata) {
            return msg.data;
        }
    
        function _contextSuffixLength() internal view virtual returns (uint256) {
            return 0;
        }
    }
    
  • contracts/interfaces/IApi3ReaderProxy.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    /// @title Interface of the proxy contract that is used to read a specific API3
    /// data feed
    /// @notice While reading API3 data feeds, users are strongly recommended to
    /// use this interface to interact with data feed-specific proxy contracts,
    /// rather than accessing the underlying contracts directly
    interface IApi3ReaderProxy {
        /// @notice Returns the current value and timestamp of the API3 data feed
        /// associated with the proxy contract
        /// @dev The user is responsible for validating the returned data. For
        /// example, if `value` is the spot price of an asset, it would be
        /// reasonable to reject values that are not positive.
        /// `timestamp` does not necessarily refer to a timestamp of the chain that
        /// the read proxy is deployed on. Considering that it may refer to an
        /// off-chain time (such as the system time of the data sources, or the
        /// timestamp of another chain), the user should not expect it to be
        /// strictly bounded by `block.timestamp`.
        /// Considering that the read proxy contract may be upgradeable, the user
        /// should not assume any hard guarantees about the behavior in general.
        /// For example, even though it may sound reasonable to expect `timestamp`
        /// to never decrease over time and the current implementation of the proxy
        /// contract guarantees it, technically, an upgrade can cause `timestamp`
        /// to decrease. Therefore, the user should be able to handle any change in
        /// behavior, which may include reverting gracefully.
        /// @return value Data feed value
        /// @return timestamp Data feed timestamp
        function read() external view returns (int224 value, uint32 timestamp);
    }
    
  • contracts/utils/interfaces/IExtendedSelfMulticall.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import "./ISelfMulticall.sol";
    
    interface IExtendedSelfMulticall is ISelfMulticall {
        function getChainId() external view returns (uint256);
    
        function getBalance(address account) external view returns (uint256);
    
        function containsBytecode(address account) external view returns (bool);
    
        function getBlockNumber() external view returns (uint256);
    
        function getBlockTimestamp() external view returns (uint256);
    
        function getBlockBasefee() external view returns (uint256);
    }
    
  • contracts/utils/interfaces/ISelfMulticall.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    interface ISelfMulticall {
        function multicall(
            bytes[] calldata data
        ) external returns (bytes[] memory returndata);
    
        function tryMulticall(
            bytes[] calldata data
        ) external returns (bool[] memory successes, bytes[] memory returndata);
    }
    
  • contracts/vendor/@chainlink/contracts@1.2.0/src/v0.8/shared/interfaces/AggregatorInterface.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    // solhint-disable-next-line interface-starts-with-i
    interface AggregatorInterface {
      function latestAnswer() external view returns (int256);
    
      function latestTimestamp() external view returns (uint256);
    
      function latestRound() external view returns (uint256);
    
      function getAnswer(uint256 roundId) external view returns (int256);
    
      function getTimestamp(uint256 roundId) external view returns (uint256);
    
      event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);
    
      event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
    }
    
  • contracts/vendor/@chainlink/contracts@1.2.0/src/v0.8/shared/interfaces/AggregatorV2V3Interface.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    import {AggregatorInterface} from "./AggregatorInterface.sol";
    import {AggregatorV3Interface} from "./AggregatorV3Interface.sol";
    
    // solhint-disable-next-line interface-starts-with-i
    interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface {}
    
  • contracts/vendor/@chainlink/contracts@1.2.0/src/v0.8/shared/interfaces/AggregatorV3Interface.sol
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    
    // solhint-disable-next-line interface-starts-with-i
    interface AggregatorV3Interface {
      function decimals() external view returns (uint8);
    
      function description() external view returns (string memory);
    
      function version() external view returns (uint256);
    
      function getRoundData(
        uint80 _roundId
      ) external view returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
    
      function latestRoundData()
        external
        view
        returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
    }
    
  • contracts/vendor/@openzeppelin/contracts-upgradeable@5.0.2/access/OwnableUpgradeable.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
    
    pragma solidity ^0.8.20;
    
    import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
    import {Initializable} from "../proxy/utils/Initializable.sol";
    
    /**
     * @dev Contract module which provides a basic access control mechanism, where
     * there is an account (an owner) that can be granted exclusive access to
     * specific functions.
     *
     * The initial owner is set to the address provided by the deployer. This can
     * later be changed with {transferOwnership}.
     *
     * This module is used through inheritance. It will make available the modifier
     * `onlyOwner`, which can be applied to your functions to restrict their use to
     * the owner.
     */
    abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
        /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
        struct OwnableStorage {
            address _owner;
        }
    
        // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
        bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;
    
        function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
            assembly {
                $.slot := OwnableStorageLocation
            }
        }
    
        /**
         * @dev The caller account is not authorized to perform an operation.
         */
        error OwnableUnauthorizedAccount(address account);
    
        /**
         * @dev The owner is not a valid owner account. (eg. `address(0)`)
         */
        error OwnableInvalidOwner(address owner);
    
        event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    
        /**
         * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
         */
        function __Ownable_init(address initialOwner) internal onlyInitializing {
            __Ownable_init_unchained(initialOwner);
        }
    
        function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
            if (initialOwner == address(0)) {
                revert OwnableInvalidOwner(address(0));
            }
            _transferOwnership(initialOwner);
        }
    
        /**
         * @dev Throws if called by any account other than the owner.
         */
        modifier onlyOwner() {
            _checkOwner();
            _;
        }
    
        /**
         * @dev Returns the address of the current owner.
         */
        function owner() public view virtual returns (address) {
            OwnableStorage storage $ = _getOwnableStorage();
            return $._owner;
        }
    
        /**
         * @dev Throws if the sender is not the owner.
         */
        function _checkOwner() internal view virtual {
            if (owner() != _msgSender()) {
                revert OwnableUnauthorizedAccount(_msgSender());
            }
        }
    
        /**
         * @dev Leaves the contract without owner. It will not be possible to call
         * `onlyOwner` functions. Can only be called by the current owner.
         *
         * NOTE: Renouncing ownership will leave the contract without an owner,
         * thereby disabling any functionality that is only available to the owner.
         */
        function renounceOwnership() public virtual onlyOwner {
            _transferOwnership(address(0));
        }
    
        /**
         * @dev Transfers ownership of the contract to a new account (`newOwner`).
         * Can only be called by the current owner.
         */
        function transferOwnership(address newOwner) public virtual onlyOwner {
            if (newOwner == address(0)) {
                revert OwnableInvalidOwner(address(0));
            }
            _transferOwnership(newOwner);
        }
    
        /**
         * @dev Transfers ownership of the contract to a new account (`newOwner`).
         * Internal function without access restriction.
         */
        function _transferOwnership(address newOwner) internal virtual {
            OwnableStorage storage $ = _getOwnableStorage();
            address oldOwner = $._owner;
            $._owner = newOwner;
            emit OwnershipTransferred(oldOwner, newOwner);
        }
    }
    
  • contracts/vendor/@openzeppelin/contracts-upgradeable@5.0.2/proxy/utils/Initializable.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
     * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
     * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
     * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
     *
     * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
     * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
     * case an upgrade adds a module that needs to be initialized.
     *
     * For example:
     *
     * [.hljs-theme-light.nopadding]
     * ```solidity
     * contract MyToken is ERC20Upgradeable {
     *     function initialize() initializer public {
     *         __ERC20_init("MyToken", "MTK");
     *     }
     * }
     *
     * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
     *     function initializeV2() reinitializer(2) public {
     *         __ERC20Permit_init("MyToken");
     *     }
     * }
     * ```
     *
     * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
     * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
     *
     * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
     * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
     *
     * [CAUTION]
     * ====
     * Avoid leaving a contract uninitialized.
     *
     * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
     * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
     * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
     *
     * [.hljs-theme-light.nopadding]
     * ```
     * /// @custom:oz-upgrades-unsafe-allow constructor
     * constructor() {
     *     _disableInitializers();
     * }
     * ```
     * ====
     */
    abstract contract Initializable {
        /**
         * @dev Storage of the initializable contract.
         *
         * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
         * when using with upgradeable contracts.
         *
         * @custom:storage-location erc7201:openzeppelin.storage.Initializable
         */
        struct InitializableStorage {
            /**
             * @dev Indicates that the contract has been initialized.
             */
            uint64 _initialized;
            /**
             * @dev Indicates that the contract is in the process of being initialized.
             */
            bool _initializing;
        }
    
        // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
        bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;
    
        /**
         * @dev The contract is already initialized.
         */
        error InvalidInitialization();
    
        /**
         * @dev The contract is not initializing.
         */
        error NotInitializing();
    
        /**
         * @dev Triggered when the contract has been initialized or reinitialized.
         */
        event Initialized(uint64 version);
    
        /**
         * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
         * `onlyInitializing` functions can be used to initialize parent contracts.
         *
         * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
         * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
         * production.
         *
         * Emits an {Initialized} event.
         */
        modifier initializer() {
            // solhint-disable-next-line var-name-mixedcase
            InitializableStorage storage $ = _getInitializableStorage();
    
            // Cache values to avoid duplicated sloads
            bool isTopLevelCall = !$._initializing;
            uint64 initialized = $._initialized;
    
            // Allowed calls:
            // - initialSetup: the contract is not in the initializing state and no previous version was
            //                 initialized
            // - construction: the contract is initialized at version 1 (no reininitialization) and the
            //                 current contract is just being deployed
            bool initialSetup = initialized == 0 && isTopLevelCall;
            bool construction = initialized == 1 && address(this).code.length == 0;
    
            if (!initialSetup && !construction) {
                revert InvalidInitialization();
            }
            $._initialized = 1;
            if (isTopLevelCall) {
                $._initializing = true;
            }
            _;
            if (isTopLevelCall) {
                $._initializing = false;
                emit Initialized(1);
            }
        }
    
        /**
         * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
         * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
         * used to initialize parent contracts.
         *
         * A reinitializer may be used after the original initialization step. This is essential to configure modules that
         * are added through upgrades and that require initialization.
         *
         * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
         * cannot be nested. If one is invoked in the context of another, execution will revert.
         *
         * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
         * a contract, executing them in the right order is up to the developer or operator.
         *
         * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
         *
         * Emits an {Initialized} event.
         */
        modifier reinitializer(uint64 version) {
            // solhint-disable-next-line var-name-mixedcase
            InitializableStorage storage $ = _getInitializableStorage();
    
            if ($._initializing || $._initialized >= version) {
                revert InvalidInitialization();
            }
            $._initialized = version;
            $._initializing = true;
            _;
            $._initializing = false;
            emit Initialized(version);
        }
    
        /**
         * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
         * {initializer} and {reinitializer} modifiers, directly or indirectly.
         */
        modifier onlyInitializing() {
            _checkInitializing();
            _;
        }
    
        /**
         * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
         */
        function _checkInitializing() internal view virtual {
            if (!_isInitializing()) {
                revert NotInitializing();
            }
        }
    
        /**
         * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
         * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
         * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
         * through proxies.
         *
         * Emits an {Initialized} event the first time it is successfully executed.
         */
        function _disableInitializers() internal virtual {
            // solhint-disable-next-line var-name-mixedcase
            InitializableStorage storage $ = _getInitializableStorage();
    
            if ($._initializing) {
                revert InvalidInitialization();
            }
            if ($._initialized != type(uint64).max) {
                $._initialized = type(uint64).max;
                emit Initialized(type(uint64).max);
            }
        }
    
        /**
         * @dev Returns the highest version that has been initialized. See {reinitializer}.
         */
        function _getInitializedVersion() internal view returns (uint64) {
            return _getInitializableStorage()._initialized;
        }
    
        /**
         * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
         */
        function _isInitializing() internal view returns (bool) {
            return _getInitializableStorage()._initializing;
        }
    
        /**
         * @dev Returns a pointer to the storage namespace.
         */
        // solhint-disable-next-line var-name-mixedcase
        function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
            assembly {
                $.slot := INITIALIZABLE_STORAGE
            }
        }
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/interfaces/draft-IERC1822.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC1822.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
     * proxy whose upgrades are fully controlled by the current implementation.
     */
    interface IERC1822Proxiable {
        /**
         * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
         * address.
         *
         * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
         * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
         * function revert if invoked through a proxy.
         */
        function proxiableUUID() external view returns (bytes32);
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/proxy/ERC1967/ERC1967Utils.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol)
    
    pragma solidity ^0.8.20;
    
    import {IBeacon} from "../beacon/IBeacon.sol";
    import {Address} from "../../utils/Address.sol";
    import {StorageSlot} from "../../utils/StorageSlot.sol";
    
    /**
     * @dev This abstract contract provides getters and event emitting update functions for
     * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
     */
    library ERC1967Utils {
        // We re-declare ERC-1967 events here because they can't be used directly from IERC1967.
        // This will be fixed in Solidity 0.8.21. At that point we should remove these events.
        /**
         * @dev Emitted when the implementation is upgraded.
         */
        event Upgraded(address indexed implementation);
    
        /**
         * @dev Emitted when the admin account has changed.
         */
        event AdminChanged(address previousAdmin, address newAdmin);
    
        /**
         * @dev Emitted when the beacon is changed.
         */
        event BeaconUpgraded(address indexed beacon);
    
        /**
         * @dev Storage slot with the address of the current implementation.
         * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1.
         */
        // solhint-disable-next-line private-vars-leading-underscore
        bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    
        /**
         * @dev The `implementation` of the proxy is invalid.
         */
        error ERC1967InvalidImplementation(address implementation);
    
        /**
         * @dev The `admin` of the proxy is invalid.
         */
        error ERC1967InvalidAdmin(address admin);
    
        /**
         * @dev The `beacon` of the proxy is invalid.
         */
        error ERC1967InvalidBeacon(address beacon);
    
        /**
         * @dev An upgrade function sees `msg.value > 0` that may be lost.
         */
        error ERC1967NonPayable();
    
        /**
         * @dev Returns the current implementation address.
         */
        function getImplementation() internal view returns (address) {
            return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value;
        }
    
        /**
         * @dev Stores a new address in the EIP1967 implementation slot.
         */
        function _setImplementation(address newImplementation) private {
            if (newImplementation.code.length == 0) {
                revert ERC1967InvalidImplementation(newImplementation);
            }
            StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation;
        }
    
        /**
         * @dev Performs implementation upgrade with additional setup call if data is nonempty.
         * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
         * to avoid stuck value in the contract.
         *
         * Emits an {IERC1967-Upgraded} event.
         */
        function upgradeToAndCall(address newImplementation, bytes memory data) internal {
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
    
            if (data.length > 0) {
                Address.functionDelegateCall(newImplementation, data);
            } else {
                _checkNonPayable();
            }
        }
    
        /**
         * @dev Storage slot with the admin of the contract.
         * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1.
         */
        // solhint-disable-next-line private-vars-leading-underscore
        bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    
        /**
         * @dev Returns the current admin.
         *
         * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using
         * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
         * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
         */
        function getAdmin() internal view returns (address) {
            return StorageSlot.getAddressSlot(ADMIN_SLOT).value;
        }
    
        /**
         * @dev Stores a new address in the EIP1967 admin slot.
         */
        function _setAdmin(address newAdmin) private {
            if (newAdmin == address(0)) {
                revert ERC1967InvalidAdmin(address(0));
            }
            StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin;
        }
    
        /**
         * @dev Changes the admin of the proxy.
         *
         * Emits an {IERC1967-AdminChanged} event.
         */
        function changeAdmin(address newAdmin) internal {
            emit AdminChanged(getAdmin(), newAdmin);
            _setAdmin(newAdmin);
        }
    
        /**
         * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
         * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1.
         */
        // solhint-disable-next-line private-vars-leading-underscore
        bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
    
        /**
         * @dev Returns the current beacon.
         */
        function getBeacon() internal view returns (address) {
            return StorageSlot.getAddressSlot(BEACON_SLOT).value;
        }
    
        /**
         * @dev Stores a new beacon in the EIP1967 beacon slot.
         */
        function _setBeacon(address newBeacon) private {
            if (newBeacon.code.length == 0) {
                revert ERC1967InvalidBeacon(newBeacon);
            }
    
            StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon;
    
            address beaconImplementation = IBeacon(newBeacon).implementation();
            if (beaconImplementation.code.length == 0) {
                revert ERC1967InvalidImplementation(beaconImplementation);
            }
        }
    
        /**
         * @dev Change the beacon and trigger a setup call if data is nonempty.
         * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
         * to avoid stuck value in the contract.
         *
         * Emits an {IERC1967-BeaconUpgraded} event.
         *
         * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since
         * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for
         * efficiency.
         */
        function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal {
            _setBeacon(newBeacon);
            emit BeaconUpgraded(newBeacon);
    
            if (data.length > 0) {
                Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
            } else {
                _checkNonPayable();
            }
        }
    
        /**
         * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract
         * if an upgrade doesn't perform an initialization call.
         */
        function _checkNonPayable() private {
            if (msg.value > 0) {
                revert ERC1967NonPayable();
            }
        }
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/proxy/beacon/IBeacon.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev This is the interface that {BeaconProxy} expects of its beacon.
     */
    interface IBeacon {
        /**
         * @dev Must return an address that can be used as a delegate call target.
         *
         * {UpgradeableBeacon} will check that this address is a contract.
         */
        function implementation() external view returns (address);
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/proxy/utils/UUPSUpgradeable.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/UUPSUpgradeable.sol)
    
    pragma solidity ^0.8.20;
    
    import {IERC1822Proxiable} from "../../interfaces/draft-IERC1822.sol";
    import {ERC1967Utils} from "../ERC1967/ERC1967Utils.sol";
    
    /**
     * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
     * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
     *
     * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
     * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
     * `UUPSUpgradeable` with a custom implementation of upgrades.
     *
     * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
     */
    abstract contract UUPSUpgradeable is IERC1822Proxiable {
        /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
        address private immutable __self = address(this);
    
        /**
         * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgradeTo(address)`
         * and `upgradeToAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called,
         * while `upgradeToAndCall` will invoke the `receive` function if the second argument is the empty byte string.
         * If the getter returns `"5.0.0"`, only `upgradeToAndCall(address,bytes)` is present, and the second argument must
         * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function
         * during an upgrade.
         */
        string public constant UPGRADE_INTERFACE_VERSION = "5.0.0";
    
        /**
         * @dev The call is from an unauthorized context.
         */
        error UUPSUnauthorizedCallContext();
    
        /**
         * @dev The storage `slot` is unsupported as a UUID.
         */
        error UUPSUnsupportedProxiableUUID(bytes32 slot);
    
        /**
         * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
         * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
         * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
         * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
         * fail.
         */
        modifier onlyProxy() {
            _checkProxy();
            _;
        }
    
        /**
         * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
         * callable on the implementing contract but not through proxies.
         */
        modifier notDelegated() {
            _checkNotDelegated();
            _;
        }
    
        /**
         * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
         * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
         *
         * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
         * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
         * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
         */
        function proxiableUUID() external view virtual notDelegated returns (bytes32) {
            return ERC1967Utils.IMPLEMENTATION_SLOT;
        }
    
        /**
         * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
         * encoded in `data`.
         *
         * Calls {_authorizeUpgrade}.
         *
         * Emits an {Upgraded} event.
         *
         * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
         */
        function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
            _authorizeUpgrade(newImplementation);
            _upgradeToAndCallUUPS(newImplementation, data);
        }
    
        /**
         * @dev Reverts if the execution is not performed via delegatecall or the execution
         * context is not of a proxy with an ERC1967-compliant implementation pointing to self.
         * See {_onlyProxy}.
         */
        function _checkProxy() internal view virtual {
            if (
                address(this) == __self || // Must be called through delegatecall
                ERC1967Utils.getImplementation() != __self // Must be called through an active proxy
            ) {
                revert UUPSUnauthorizedCallContext();
            }
        }
    
        /**
         * @dev Reverts if the execution is performed via delegatecall.
         * See {notDelegated}.
         */
        function _checkNotDelegated() internal view virtual {
            if (address(this) != __self) {
                // Must not be called through delegatecall
                revert UUPSUnauthorizedCallContext();
            }
        }
    
        /**
         * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
         * {upgradeToAndCall}.
         *
         * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
         *
         * ```solidity
         * function _authorizeUpgrade(address) internal onlyOwner {}
         * ```
         */
        function _authorizeUpgrade(address newImplementation) internal virtual;
    
        /**
         * @dev Performs an implementation upgrade with a security check for UUPS proxies, and additional setup call.
         *
         * As a security check, {proxiableUUID} is invoked in the new implementation, and the return value
         * is expected to be the implementation slot in ERC1967.
         *
         * Emits an {IERC1967-Upgraded} event.
         */
        function _upgradeToAndCallUUPS(address newImplementation, bytes memory data) private {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                if (slot != ERC1967Utils.IMPLEMENTATION_SLOT) {
                    revert UUPSUnsupportedProxiableUUID(slot);
                }
                ERC1967Utils.upgradeToAndCall(newImplementation, data);
            } catch {
                // The implementation is not UUPS
                revert ERC1967Utils.ERC1967InvalidImplementation(newImplementation);
            }
        }
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/utils/Address.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Collection of functions related to the address type
     */
    library Address {
        /**
         * @dev The ETH balance of the account is not enough to perform the operation.
         */
        error AddressInsufficientBalance(address account);
    
        /**
         * @dev There's no code at `target` (it is not a contract).
         */
        error AddressEmptyCode(address target);
    
        /**
         * @dev A call to an address target failed. The target may have reverted.
         */
        error FailedInnerCall();
    
        /**
         * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
         * `recipient`, forwarding all available gas and reverting on errors.
         *
         * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
         * of certain opcodes, possibly making contracts go over the 2300 gas limit
         * imposed by `transfer`, making them unable to receive funds via
         * `transfer`. {sendValue} removes this limitation.
         *
         * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
         *
         * IMPORTANT: because control is transferred to `recipient`, care must be
         * taken to not create reentrancy vulnerabilities. Consider using
         * {ReentrancyGuard} or the
         * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
         */
        function sendValue(address payable recipient, uint256 amount) internal {
            if (address(this).balance < amount) {
                revert AddressInsufficientBalance(address(this));
            }
    
            (bool success, ) = recipient.call{value: amount}("");
            if (!success) {
                revert FailedInnerCall();
            }
        }
    
        /**
         * @dev Performs a Solidity function call using a low level `call`. A
         * plain `call` is an unsafe replacement for a function call: use this
         * function instead.
         *
         * If `target` reverts with a revert reason or custom error, it is bubbled
         * up by this function (like regular Solidity function calls). However, if
         * the call reverted with no returned reason, this function reverts with a
         * {FailedInnerCall} error.
         *
         * Returns the raw returned data. To convert to the expected return value,
         * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
         *
         * Requirements:
         *
         * - `target` must be a contract.
         * - calling `target` with `data` must not revert.
         */
        function functionCall(address target, bytes memory data) internal returns (bytes memory) {
            return functionCallWithValue(target, data, 0);
        }
    
        /**
         * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
         * but also transferring `value` wei to `target`.
         *
         * Requirements:
         *
         * - the calling contract must have an ETH balance of at least `value`.
         * - the called Solidity function must be `payable`.
         */
        function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
            if (address(this).balance < value) {
                revert AddressInsufficientBalance(address(this));
            }
            (bool success, bytes memory returndata) = target.call{value: value}(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
    
        /**
         * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
         * but performing a static call.
         */
        function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
            (bool success, bytes memory returndata) = target.staticcall(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
    
        /**
         * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
         * but performing a delegate call.
         */
        function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
            (bool success, bytes memory returndata) = target.delegatecall(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
    
        /**
         * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
         * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
         * unsuccessful call.
         */
        function verifyCallResultFromTarget(
            address target,
            bool success,
            bytes memory returndata
        ) internal view returns (bytes memory) {
            if (!success) {
                _revert(returndata);
            } else {
                // only check if target is a contract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                if (returndata.length == 0 && target.code.length == 0) {
                    revert AddressEmptyCode(target);
                }
                return returndata;
            }
        }
    
        /**
         * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
         * revert reason or with a default {FailedInnerCall} error.
         */
        function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
            if (!success) {
                _revert(returndata);
            } else {
                return returndata;
            }
        }
    
        /**
         * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
         */
        function _revert(bytes memory returndata) private pure {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert FailedInnerCall();
            }
        }
    }
    
  • contracts/vendor/@openzeppelin/contracts@5.0.2/utils/StorageSlot.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol)
    // This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Library for reading and writing primitive types to specific storage slots.
     *
     * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
     * This library helps with reading and writing to such slots without the need for inline assembly.
     *
     * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
     *
     * Example usage to set ERC1967 implementation slot:
     * ```solidity
     * contract ERC1967 {
     *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
     *
     *     function _getImplementation() internal view returns (address) {
     *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
     *     }
     *
     *     function _setImplementation(address newImplementation) internal {
     *         require(newImplementation.code.length > 0);
     *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
     *     }
     * }
     * ```
     */
    library StorageSlot {
        struct AddressSlot {
            address value;
        }
    
        struct BooleanSlot {
            bool value;
        }
    
        struct Bytes32Slot {
            bytes32 value;
        }
    
        struct Uint256Slot {
            uint256 value;
        }
    
        struct StringSlot {
            string value;
        }
    
        struct BytesSlot {
            bytes value;
        }
    
        /**
         * @dev Returns an `AddressSlot` with member `value` located at `slot`.
         */
        function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
         */
        function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
         */
        function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
         */
        function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `StringSlot` with member `value` located at `slot`.
         */
        function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
         */
        function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := store.slot
            }
        }
    
        /**
         * @dev Returns an `BytesSlot` with member `value` located at `slot`.
         */
        function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
         */
        function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
            /// @solidity memory-safe-assembly
            assembly {
                r.slot := store.slot
            }
        }
    }
    
ABI · 41 entries
json
[
  {
    "type": "constructor",
    "inputs": [
      {
        "name": "api3ServerV1OevExtension_",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "dapiName_",
        "type": "bytes32",
        "internalType": "bytes32"
      },
      {
        "name": "dappId_",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "nonpayable"
  },
  {
    "name": "AddressEmptyCode",
    "type": "error",
    "inputs": [
      {
        "name": "target",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "DapiNameIsNotSet",
    "type": "error",
    "inputs": []
  },
  {
    "name": "DataFeedIsNotInitialized",
    "type": "error",
    "inputs": []
  },
  {
    "name": "ERC1967InvalidImplementation",
    "type": "error",
    "inputs": [
      {
        "name": "implementation",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "ERC1967NonPayable",
    "type": "error",
    "inputs": []
  },
  {
    "name": "FailedInnerCall",
    "type": "error",
    "inputs": []
  },
  {
    "name": "FunctionIsNotSupported",
    "type": "error",
    "inputs": []
  },
  {
    "name": "InvalidInitialization",
    "type": "error",
    "inputs": []
  },
  {
    "name": "NotInitializing",
    "type": "error",
    "inputs": []
  },
  {
    "name": "OwnableInvalidOwner",
    "type": "error",
    "inputs": [
      {
        "name": "owner",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "OwnableUnauthorizedAccount",
    "type": "error",
    "inputs": [
      {
        "name": "account",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "UUPSUnauthorizedCallContext",
    "type": "error",
    "inputs": []
  },
  {
    "name": "UUPSUnsupportedProxiableUUID",
    "type": "error",
    "inputs": [
      {
        "name": "slot",
        "type": "bytes32",
        "internalType": "bytes32"
      }
    ]
  },
  {
    "name": "AnswerUpdated",
    "type": "event",
    "inputs": [
      {
        "name": "current",
        "type": "int256",
        "indexed": true,
        "internalType": "int256"
      },
      {
        "name": "roundId",
        "type": "uint256",
        "indexed": true,
        "internalType": "uint256"
      },
      {
        "name": "updatedAt",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "Initialized",
    "type": "event",
    "inputs": [
      {
        "name": "version",
        "type": "uint64",
        "indexed": false,
        "internalType": "uint64"
      }
    ],
    "anonymous": false
  },
  {
    "name": "NewRound",
    "type": "event",
    "inputs": [
      {
        "name": "roundId",
        "type": "uint256",
        "indexed": true,
        "internalType": "uint256"
      },
      {
        "name": "startedBy",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "startedAt",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "OwnershipTransferred",
    "type": "event",
    "inputs": [
      {
        "name": "previousOwner",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "newOwner",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "Upgraded",
    "type": "event",
    "inputs": [
      {
        "name": "implementation",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "UPGRADE_INTERFACE_VERSION",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "string",
        "internalType": "string"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "api3ServerV1",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "api3ServerV1OevExtension",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "dapiName",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "bytes32",
        "internalType": "bytes32"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "dappId",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "decimals",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint8",
        "internalType": "uint8"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "description",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "string",
        "internalType": "string"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "getAnswer",
    "type": "function",
    "inputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "int256",
        "internalType": "int256"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "getRoundData",
    "type": "function",
    "inputs": [
      {
        "name": "",
        "type": "uint80",
        "internalType": "uint80"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "uint80",
        "internalType": "uint80"
      },
      {
        "name": "",
        "type": "int256",
        "internalType": "int256"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "uint80",
        "internalType": "uint80"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "getTimestamp",
    "type": "function",
    "inputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "initialize",
    "type": "function",
    "inputs": [
      {
        "name": "initialOwner",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "latestAnswer",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "value",
        "type": "int256",
        "internalType": "int256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "latestRound",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "name": "latestRoundData",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "roundId",
        "type": "uint80",
        "internalType": "uint80"
      },
      {
        "name": "answer",
        "type": "int256",
        "internalType": "int256"
      },
      {
        "name": "startedAt",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "updatedAt",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "answeredInRound",
        "type": "uint80",
        "internalType": "uint80"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "latestTimestamp",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "timestamp",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "owner",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "proxiableUUID",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "bytes32",
        "internalType": "bytes32"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "read",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "value",
        "type": "int224",
        "internalType": "int224"
      },
      {
        "name": "timestamp",
        "type": "uint32",
        "internalType": "uint32"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "renounceOwnership",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "transferOwnership",
    "type": "function",
    "inputs": [
      {
        "name": "newOwner",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "upgradeToAndCall",
    "type": "function",
    "inputs": [
      {
        "name": "newImplementation",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "data",
        "type": "bytes",
        "internalType": "bytes"
      }
    ],
    "outputs": [],
    "stateMutability": "payable"
  },
  {
    "name": "version",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "pure"
  }
]