Contract Name:
Api3ReaderProxyV1
Contract Source Code:
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IOevDataFeedServer.sol";
import "./IDapiServer.sol";
interface IOevDapiServer is IOevDataFeedServer, IDapiServer {}
// 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);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.27;
import "../../vendor/@openzeppelin/[email protected]/proxy/utils/UUPSUpgradeable.sol";
import "../../vendor/@openzeppelin/[email protected]/access/OwnableUpgradeable.sol";
import "../../vendor/@chainlink/[email protected]/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 {}
}
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// 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);
}
// 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 {}
// 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);
}
// 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);
}
}
// 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
}
}
}
// 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;
}
}
// 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);
}
// 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);
}
// 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();
}
}
}
// 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);
}
}
}
// 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();
}
}
}
// 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
}
}
}