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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/proxy/beacon/IBeacon.sol";
import "@openzeppelin/contracts/proxy/Proxy.sol";

/// @custom:security-contact [email protected]
contract BeaconProxy is Proxy {
    IBeacon private immutable _beacon;

    event BeaconUpgraded(IBeacon indexed beacon);

    constructor(IBeacon beacon)
    {
        _beacon = beacon;
        emit BeaconUpgraded(beacon);
    }

    function _implementation()
        internal
        view
        override
        returns (address)
    {
        return _beacon.implementation();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @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.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        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())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

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

    /**
     * @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 virtual {
        _fallback();
    }

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

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "debug": {
    "revertStrings": "strip"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[{"internalType":"contract IBeacon","name":"beacon","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract IBeacon","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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

00000000000000000000000023b0c2381075df4002bc6d3b9baf52ab0acb1e9b

-----Decoded View---------------
Arg [0] : beacon (address): 0x23b0C2381075dF4002BC6D3B9baF52Ab0ACB1E9B

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000023b0c2381075df4002bc6d3b9baf52ab0acb1e9b