You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.0 KiB
Solidity
62 lines
2.0 KiB
Solidity
1 year ago
|
// SPDX-License-Identifier: MIT
|
||
|
|
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/beacon/BeaconProxy.sol)
|
||
|
|
|
||
|
|
pragma solidity ^0.8.0;
|
||
|
|
|
||
|
|
import "./IBeacon.sol";
|
||
|
|
import "../Proxy.sol";
|
||
|
|
import "../ERC1967/ERC1967Upgrade.sol";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev This contract implements a proxy that gets the implementation address for each call from an {UpgradeableBeacon}.
|
||
|
|
*
|
||
|
|
* The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
|
||
|
|
* conflict with the storage layout of the implementation behind the proxy.
|
||
|
|
*
|
||
|
|
* _Available since v3.4._
|
||
|
|
*/
|
||
|
|
contract BeaconProxy is Proxy, ERC1967Upgrade {
|
||
|
|
/**
|
||
|
|
* @dev Initializes the proxy with `beacon`.
|
||
|
|
*
|
||
|
|
* If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
|
||
|
|
* will typically be an encoded function call, and allows initializing the storage of the proxy like a Solidity
|
||
|
|
* constructor.
|
||
|
|
*
|
||
|
|
* Requirements:
|
||
|
|
*
|
||
|
|
* - `beacon` must be a contract with the interface {IBeacon}.
|
||
|
|
*/
|
||
|
|
constructor(address beacon, bytes memory data) payable {
|
||
|
|
_upgradeBeaconToAndCall(beacon, data, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Returns the current beacon address.
|
||
|
|
*/
|
||
|
|
function _beacon() internal view virtual returns (address) {
|
||
|
|
return _getBeacon();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Returns the current implementation address of the associated beacon.
|
||
|
|
*/
|
||
|
|
function _implementation() internal view virtual override returns (address) {
|
||
|
|
return IBeacon(_getBeacon()).implementation();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Changes the proxy to use a new beacon. Deprecated: see {_upgradeBeaconToAndCall}.
|
||
|
|
*
|
||
|
|
* If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
|
||
|
|
*
|
||
|
|
* Requirements:
|
||
|
|
*
|
||
|
|
* - `beacon` must be a contract.
|
||
|
|
* - The implementation returned by `beacon` must be a contract.
|
||
|
|
*/
|
||
|
|
function _setBeacon(address beacon, bytes memory data) internal virtual {
|
||
|
|
_upgradeBeaconToAndCall(beacon, data, false);
|
||
|
|
}
|
||
|
|
}
|