Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @author: manifold.xyz
import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";
contract ERC1155Creator is Proxy {
constructor() {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4;
Address.functionDelegateCall(
0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4,
abi.encodeWithSignature("initialize()")
);
}
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function implementation() public view returns (address) {
return _implementation();
}
function _implementation() internal override view returns (address) {
return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: 24
/// @author: manifold.xyz
import "./ERC1155Creator.sol";
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWNNXXXXXXXXXXNNWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNX0Oxdolc:;;,'''''''''',,;::clodkOKXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWX0kdl:,....,,;;;;;;;;,;;;;;;;;;,,. ....';coxOKNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWN0xl:,.........cKXXXXXNNXKXXXXXXXXXXX0;.......... ...;cdOXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNOdc,............. :0d::::::oxl:::::::::o0c..................':okKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKxc,................. :0: . .;oxo. . ,0o.......................:oONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0d:..................... c0; .:kXXx:. . ... ;0l..........................,lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKx:........................ c0; .;kOl';, ....... ;0l.............................,oONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNOc'.......................... l0, ......cc. ...... ;0l................................;xXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMXx;............................. lO, . .. .lo. ...... ;0l .................................'o0WMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMXd,................................oO' . .ox. ...... ;0l ....................................c0WMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMXd,.................... .............oO' .... .oO' ...... ;0l ............ ...','................c0WMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMNk,...................... ......... oO' ......oK; ...... ;0c ... ...,;clllcc:;;'..................lKMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMW0:.................................... oO' ... . cKc ... 'l;.',:cloxxddddlc;'.. ....................'xNMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMXd'..................................... .oO' . .,':Xd'',;:cloxxxxxxxdlc:,... .............................:0WMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMW0:.............................. ..........:o:;ccld000WXkxkkxdocll;.... ......................................'xNMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMWx'............................... .cdddddddodxxdx0NXXkoXO,.... ,k: ..............................................cXMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMNo....................... ......... ............. .:kNd;0O' .... ;O: ........... .. ...............................;0MMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMXl........................ ...................co. .. .x0lOK, . .. ;O: .......... ................................,OWMMMMMMMMMMMMM //
// MMMMMMMMMMMMMXc..................... ........ .. .... .dk. . .dXlxK; . . ;O: ........... .................................. 'OWMMMMMMMMMMMM //
// MMMMMMMMMMMMKc.................................. ... .dk. .oXldX: .... ;O: .......... ............... ..................... 'OWMMMMMMMMMMM //
// MMMMMMMMMMMK:...................... .. .. . . .dx. . :XdoXc . ;O: .... ......................... .................. ,0MMMMMMMMMMM //
// MMMMMMMMMMNl.................. ....... .. .. .xd. .:dkNx:d; . . ;O; . ......................... ...................:KMMMMMMMMMM //
// MMMMMMMMMWd........................... ...... .. .xd. .cx0WKdlc:;. . :O; . ..... ............... . ................lNMMMMMMMMM //
// MMMMMMMMMO,.................................... . .xd. 'dXKl;:ccol'. :k, .. ........... ........ ...................xWMMMMMMMM //
// MMMMMMMMXc................................. . .xo. .;ko;'. .cd; :d' . .............. ... ...................;KMMMMMMMM //
// MMMMMMMMk........................ .. .. . .xo. ;0o. . .:d,:k, . ............ .....................oNMMMMMMM //
// MMMMMMMXc......................... ..... . .xd. .xO' . .llck; . . . ........ .....................'OMMMMMMM //
// MMMMMMMO'.......................... ....... .xo. ;Kx. . ,dxk; . ..... ... . .. . ......................oWMMMMMM //
// MMMMMMWo............................ ..... .xo cNd. .o0k; . .. . .. ..... ... .... ..............;KMMMMMM //
// MMMMMMX:................................ .xo lWx. ...... .lKO, . . . ..... .... ..... ..................kMMMMMM //
// MMMMMM0,............................... .xl cNk..:k0kxko' .cXO, . .. .. ..... ..................dMMMMMM //
// MMMMMMk................................. .xl ,KK;'0MKd0WWd. .cOk, ....... ... .... ............lWMMMMM //
// MMMMMMx.................. . ....... .... . 'Ol .kWo.l0KKK0x,. 'cox, ..... ...... ... ............cNMMMMM //
// MMMMMMx.............................. .... ,Oc cNK; .''... ..;.:x, . ....... .... .. . ...............:XMMMMM //
// MMMMMMx.............................. . . ,Oc . 'OWd. . ... :d' . ...... . .. . . ................:XMMMMM //
// MMMMMMx.............................. . ,Oc .cN0, . :d' . . .... ........ .. .. ................cXMMMMM //
// MMMMMMO'................ ............. . .;. .xWd. . :d' . ...';;,. ........... .. ..............lNMMMMM //
// MMMMMM0,............................. .....,;::cclolc:oXK; . .. ':'.,:cldxdol:,.. ......... .. ................dWMMMMM //
// MMMMMMXc......................... ,ddddxxxxdoc:;cxcxWd. ....,:codkOOOkxo:,.. . ........ ....................... .kMMMMMM //
// MMMMMMWd......................... ....... .:' :0oxWKddkO0000Odoc;'.. .... . ......... ... ........................ ;KMMMMMM //
// MMMMMMM0,......................... . ,k: .ckNWWMM0kOxl,'.. ... . ... .. .. ..... .......................oWMMMMMM //
// MMMMMMMWd.......... .... .... ;k; .cddxKMWl:dl' ... ;o. . . ............... .... .. ................ 'OMMMMMMM //
// MMMMMMMMK;........... ..... ;k; .dWX:lOd, . . ;o. . ......''','''.. . ....... ...................lNMMMMMMM //
// MMMMMMMMWd. ......... .... .. ,o' .OMNodXO: ....,;',;::cllodxxkkxxxxddolc;,.. . ......................... 'OMMMMMMMM //
// MMMMMMMMMX:............. . ... .;:::cllcclloxXMNOKWN0kOkkkkkxkkkxxdolcc:;,'..... .. ......................... .dWMMMMMMMM //
// MMMMMMMMMMO,........ .. .. .. .;dxOO0KXXNWMMMWNXKNMWO::;,'...... .............. ...........................lNMMMMMMMMM //
// MMMMMMMMMMWx........ .... .....',;lx0XWNKNMWd. ,:. . . . .. ...................................cXMMMMMMMMMM //
// MMMMMMMMMMMNo.......... .... ,c. .c0XNKo;,kMMd. :o. . ..... .. ..............................;KMMMMMMMMMMM //
// MMMMMMMMMMMMNl........... .. . :x' .,oxOKKx;xMMx. co. ..... ............................;0MMMMMMMMMMMM //
// MMMMMMMMMMMMMXl........... ck' .oXXd,dMMx. . co. .. .. .... ...................;0MMMMMMMMMMMMM //
// MMMMMMMMMMMMMMNo............ oO' .lXXNXllWMk. co. ....... ...... ... .. .............;0MMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMNx'............ oO' .,:0Nc;XMO. . co. ....... .... . ... ...........cKMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMWO,........... .oO' . 'ONc.o0d. :l. .... ..... ..............oNMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMKc.......... .dO. . .kNc ... :o. . ...... ... . ........;OWMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMNx'........ .dk. . .xNc :l. . .... .. . . ... .....lXMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMKl....... .. .dk. . .xNl :l. .. . ..... ......... .. ...;OWMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMWO:....... .. .dx. .xWl ;c. .. ... ... .............'dXMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMNk;..... .. .. .dx. .xWl. ;c. ... ................. ....... .......'lKWMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMNk;.... .... .. .dx. .dWl. ;c. ............................ . .'oKWMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMNkc.... ... .... . .dx. . . .oNl .;:.:c. .... .. ... ... ............ .,dKWMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0o,. .. ... ... . .dx. . cO; .ckKk,:c........ ............ ... ..:kNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNkc'. . ... .. .dx. . .. ... ..;OX0l.::.......... ........ .. .;dKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXkc'. .... . .dO;,,;,,,,,,,,;;;cdl:cxl....................... ..;d0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXko;.. ... .:OOO00OOOOOOOOO00OOO0K0l.......................'cxKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKxl;.. . ...'looolllllllllllllllloo;...................,cdONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKOdc;'.. .... ................,:ox0NWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWX0xol:,'... . ....................,;codOKNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNX0Okdolcc:;;,,,,,,,;;;:cclodxk0KXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWWNNNNNNNNWWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //
// //
// //
// //
// //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
contract m24 is ERC1155Creator {
constructor() ERC1155Creator() {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 overridden 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 internal 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 overridden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @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, it is bubbled up by this
* function (like regular Solidity function calls).
*
* 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.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @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`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @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:
* ```
* 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(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 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
}
}
}