Contract 0xa0e8bceec44952c817b49aa911367b6d38bf88ea

/**
 *Submitted for verification at Optimistic.Etherscan.io on 2023-04-22
*/

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.18;



contract BakedBeanManagement{
    /*//////////////////////////////////////////////////////////////
                           STORAGE MANAGEMENT
    //////////////////////////////////////////////////////////////*/

    bytes32 internal constant _BEACON_STORAGE_SLOT =
        bytes32(uint256(keccak256("eip1967.proxy.beacon")) - 1);

    /// @dev struct to store beacon address
    struct AddressSlot {
        address value;
    }
    error BeaconNotSet();
    error ImplementationNotSet();
    error BeaconCallFailed();
    /// @dev returns the storage slot where the beacon address is stored
    function _getAddressSlot(bytes32 slot)
        internal
        pure
        returns (AddressSlot storage r)
    {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }
    }

    /*//////////////////////////////////////////////////////////////
                              CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    /// @notice constructor for proxy
    /// @param _beaconAddress: address of beacon (i.e. factory address)
    /// @dev {Factory.sol} will store the implementation address,
    /// thus acting as the beacon
    constructor(address _beaconAddress) {
        _getAddressSlot(_BEACON_STORAGE_SLOT).value = _beaconAddress;
    }

    /*//////////////////////////////////////////////////////////////
                              BEACON LOGIC
    //////////////////////////////////////////////////////////////*/

    /// @return beacon address (i.e. the factory address)
    function _beacon() internal view returns (address beacon) {
        beacon = _getAddressSlot(_BEACON_STORAGE_SLOT).value;
        if (beacon == address(0)) revert BeaconNotSet();
    }

    /*//////////////////////////////////////////////////////////////
                          IMPLEMENTATION LOGIC
    //////////////////////////////////////////////////////////////*/

    /// @return implementation address (i.e. the account logic address)
    function _implementation() internal returns (address implementation) {
        (bool success, bytes memory data) =
            _beacon().call(abi.encodeWithSignature("implementation()"));
        if (!success) revert BeaconCallFailed();
        implementation = abi.decode(data, (address));
        if (implementation == address(0)) revert ImplementationNotSet();
    }

    /*//////////////////////////////////////////////////////////////
                            FORWARDING LOGIC
    //////////////////////////////////////////////////////////////*/

    /// @dev Fallback function that delegates calls to the address returned by `_implementation()`.
    /// Will run if no other function in the contract matches the call data.
    fallback() external payable {
        _fallback();
    }

    /// @dev Fallback function that delegates calls to the address returned by `_implementation()`.
    /// Will run if call data is empty.
    receive() external payable {
        _fallback();
    }

    /// @notice Delegates the current call to the address returned by `_implementation()`.
    /// @dev This function does not return to its internal call site,
    /// it will return directly to the external caller.
    function _fallback() internal {
        _delegate(_implementation());
    }

    /// @notice delegates the current call to `implementation`.
    /// @dev This function does not return to its internal call site,
    /// it will return directly to the external caller.
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result :=
                delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_beaconAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BeaconCallFailed","type":"error"},{"inputs":[],"name":"BeaconNotSet","type":"error"},{"inputs":[],"name":"ImplementationNotSet","type":"error"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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ipfs://a9fe180b118f059af22133ae7f06251ccb7ca886e7c85092c4cf14b7a43fce00