Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: JakNFT 1/1s
/// @author: manifold.xyz
import "./ERC721Creator.sol";
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// ........':,..... . .. .. ... .... .'. .. ... ..........,;;'.. //
// ............'. .. ... ....,;'. ........ .... .. ............ //
// ....,..... ... .'. .'''. ...'....'..,cl:.. .,..':c'....'. .''. .'... ...........;: //
// ...:;..;,. .. .;;,. ..'....'.,;''cool,..,c;';oo:'..;,..':' .. ';.. ..... ....', //
// ........... ';:;' ..''..';'',,:loooc,',cc:lddl,.,:;.'c:. . ...''. ... ..... //
// . ....... .,,,. ';..,:,.':oooddoc;;::ldxddc',:;;cl:.. ..... ...,; //
// . .... .'''. ':;,:c;';looddxxdlc:lxkxxxo;',:loo:.. .. .;lo //
// '. ... .':cccccclooddxxkkkxdxkkkxxxl::oodo;.. .... .... ..'; //
// .. .:ccllloooddxxkkOOOOOOkkkxxxdddddo;....'..... .cc. .. .'. . //
// .';,. .;;'. .:clllloooddxxkOOOOOOOkkxxdddddddo;. ..,... ..'''.. .;ol' .. //
// .okl. .;ddo, ...,:cllloooddxxkkOOOOkkkxxxdddddddl,. ... .',,':dxxx:. ':c' //
// .''...;:c,. .,::;'..,:loo:... ...,;,,;:clooddxxxkkkkkkkkxddddoddol:. .. ,c,. ,oxxd, .'. .'.... //
// .:xkkx;..;llllooooodddo,... ...':l:.';:::::cloodxxxxxxxxxddoollc;'. . ,;. .''. .;ol' .. ....,' //
// . .. .colc,,loooooooddoddo:. ..',cl:',cool:;cllc:cllollc:cllllc:;;. . .'. .clod, ... //
// . .',.. .;looooodoodddddc. .';lo:;cool:;:oddlccoddol;',cddl;,;ll, ... 'loxo. ....,. . //
// .:l. .:looc,:odddddddl, ..;odlclooc::lddolcodxoc:;:lddl;.':ddl,. .;... .. .cxkx; .... //
// .. .;cll;. .cdollc:;' .,lollool::ldddlccddoc:cclddo:'':odo:..,. ,o;.. .:kOOd' ... //
// .. .':lol;. ';;,,;:;. .....,:lol:,;ldolc;,;::;:loddoc;;:lol;;:;lx:.,l;.''. .. .,,,,''. .. //
// .;::;,...';cllcllll;. .','..;ll:,..,::,,::;;;;codddl;,,;;::,'';odo,...'',,........ . .'. . . //
// ,cclllllllllcc::cloo;. .cxocc;....'..'';:;;;:lddl;,''''',,,,,',cc:,. ............... .. .. . //
// .clllccccllooddxxxkkxc. .:ooll'......'',;:;;:clc;'........',,,,',cc,. .... .. .. //
// .:odl,.cxkkkxl;:looolc,. .::;cl,..''..'',;;;;;;,,,'....''...',,,,';c' . .. ':' .. //
// . ,dkx:..:doll;. .,clol,. ... 'c;'.,c,''';;;;,,,;;,'...',,'...',,,,,c:. ..;;'... .. .,,. //
// .;cc;. ,cccc' .. .:odl' .. .;:'.'...',;;,'''',;;,''''''''..',,,,,;l;. .,clc'.'. . ':,. //
// .,lol, ;dxdo' ...;oxdl,.. ..:c,.....,;;,'''',;;;;,,,,,,,,,',,,,,,,cc'.,;'.;,..;:'. . .:c:,. //
// . ...oOOd' . ;xxxd:';oxkOOkxc. .',,:cc,''',,;;;;,,,,;;;;;;;;;;;,,,,,,,,,,,;l:'.. ,:'.';;.. .....,:llllc' ... //
// .. ,dxxo;..,cddddddddddool:. .,,'...':;,;:;;;;;;;;;;;;;;;;;;;;;;;;;;,,,,,;,:c. 'c,... .. ';;clllllll:. .'. //
// .:ooooolclllccccccccllc,. .:c. .. .,:,,;:;;:;;;;;;;;;;::;;;;;;;;;;,,,,;;,,c;.....::'.. .. .:clllllllll;. .,,. //
// .:ccc:::::cllloooooddo:. .::..,'..'c;';::::;;;;;;;;;;;;;;;,,,;;;,,,,,;,,,;c..,,.,c:,'... .'.';cllllll:. .... //
// .,:loloooooooddddooddxxl:. .':;..;;...;:'';;;;;;;;;;;;;;;;,,,''',,,,,,,,,,,',c;..,'.'c:,'... .. .:lllllc. . //
// ,clllllooodooooollloxkko;' .,:c:,,,...,c,.,;;;;;;;;;,,,''',,,,,,,,,;,,;;,,,'';c. .. .:;..... .:ooool. .. //
// ,,',,:clooolcclloodddxd:'. .':c:'.,.. .:;..,;;;;;;;,','........',,,,,;;;,,,'.':;.....,,...... 'ldddc. .. //
// .':looddddoooollllldkOxl' .';::,.... .;:...,;;;;;;,;;'..... ...'',;,,,,,'..';..',''....,'. .cddo;. ... //
// ;lddddddddddo:,',,cxooo:. ..',,,'''',',c,...,;;;;;;;;;:;;,,........'',,,,,'. .',,'.. ..... .. .:ddo' //
// ';ldddddddddoc;''.;c:;c;. ..'.......;ccc,...',;;;;;;;;;;;;;'... ...',;,'.. .,;'.. .... .. .cdo:. //
// .';;:codxkOOOxdl:;,,,'''. .........;clc. ..',,,;;,;;,,,;:;.. ...,,... .;:'. .. ... ,lol, //
// lcc:,,;:lodxkOOOkxdoc:;;. ....,cl:,'..'''..'',,,,,,;:;......';'...';:,. .... 'loc,. //
// kOOOkxxxdlccccloxkOOOkkxl,. .':l:;;,;:::,'....'',,;;;,,',,,;;,,;;'.........'... .;lodc. //
// .;cdkOO0000OOkxxdxxxkkkOkl.. .:c;. ...',;:;,'....',,,,,,;:;,'',. .;looddl;.. ..':lddddo' //
// ..,cdxkkkOOkkxxddollllc'.... .:c,. .. ...,,,;;,'.',;;,...';,'. .:ddddddddlc:::clooddddddd:. //
// .cdddddddddoollccccc:. ..... ....''.;:'.... ..'..,'.. .',''''.. .,loddddddddddddddddddddddl'.. //
// ,odddddxxkkkkxxxxddd;. ...',''...,:,.... ...''. ........... .:oddddddddddddddddddololc,. //
// .cooddxxxxkkkkkkkkkkc. .. ...'..... .. .';,'.. .'';:;,,'. ....,cloddddddddddddddooooool:. //
// .;lloodxxxxkkkkkkkkd;. .. ..'... . .',,;,,;clc;;;::' ....',;:cloddddddddc,;oddddo' //
// ;ddddoooooddddddxdc. ....... ..........;c:;',:cc,. ..',:lodoc,...cddddo; //
// 'oddddddddddooddoc'. ..... .... .,:llc' ..':c:;cc:,','. ..,::;,'..... .';,.....;ddddd:. //
// .okOOkkkkxxd:,ldo:. .... ... .':oxkd:'. ..'''..,cc::c:. .,okkkkxddoolcc:,. ......'clllo:. //
// .cxxkOOO000O:.;dx:..... .. .,ldddxkl.. .'....,::;;:c' .:kkdooddxxkkkkkxc'. .. ..;llll:. //
// .;ollloodddo,..:xo,,. .:odl:;:dkx;. .'..';c:;,';:,... .lkxc;;,,;::ccldkxl' . .;ddddo;. //
// ,llllcccc:,....;ool' 'cddc,..,;lxko'.. ..,,,,::;;;,,''.... .:xxc'..';,,;;;;;okxl. .. .,odddd:. //
// ,odxxxxxdo:....;odoc. .cddl,. .,,:okkl... .;;,,;,'',,,;'.. .:xkl. ...',,;;,:dkd:. .. 'lddddl' //
// 'looodddxxl. .:ooc. .:dxd:'. .,;;:okko,... ..........''.. .cxxl,'. ....,;;;;lkko,. .. .lddddl. //
// .;;;:clodl:,;ccll:. .,lxxl;,. ..,;,''cxkd:.. ....... ..:dxoc;,,,'....,;;;;;;:dkkl. ....okdddl' //
// .,c,''',;looodddl;. .;oxd:,,,,....',;,...,lxxxl;'....'. .,,;oxxoc;;;;;:;;:;;;;;:;;;;cxOx:. ...d0Oxdl' //
// .';,'.';:odddooo:. .:dkd:,,,;;,,,,,;;,'...,:lxkkkxddxd;..;dxxdol:;;;;;;::::::::;::;;,,,lkkl' .d00Okx;. //
// . ..;;:lodddxkxol' .;okxc;,,,;;;:;;;;;;;,,,;;;:clodxkko;..:xkd:,,,;;;;;::;:::::::;,'...'lkxc'. ....o0000kl'... //
// .'cddxxkkkkxdl, .'cxxl;;;::::::::;;;;;;,,,,,;;,;lxkxc'..,dkxc,,,;;;;:;;;;:::::,.. .;xxc.. .;,'lkkxxdlcddc. //
// ',;;'. .'lxkkkxxdoc:'. ..'okd:;;;;;:;;;:::;:::;;;;;;;;;:okko;. .lkko:;;;;;;:;;;:;,''.. .;xxc'.. ...cdooodlclc,. //
// loooo;. .,cooooool:'. ...;xkl;;;;;;;;;::::::::::;;,,,,;lxxdc'.. .;dkxl;,,,,,,;;;,'........'lxx:'. ... .,::ccc:'. .. //
// lloxxxo:;:ccc::;;;;,. .',oOd;';;,,,,,;;;:::::;;::;''',:dko:,..'. 'lxkd;'''''''''''''''''';dkd;',..... .,looodo, //
// cldkkkxl:::::::ccclc. .;lxkkdl:;'''''',;:::;;;;;,'''',okxc,...'. .;okkl,,,''''.',,'.....:dxl,...',... .;dddddo, //
// :coxxxdollllcccc:::;. .,:ldkkxl;.....';:;,'.';;;,,''cxkl,...'... .cdkxo;,,,'.';cc:',:coxo:.. ..,;.... .;llcccc' //
// lllllllc:;;;;;::ccllc. ..;coxkxl;. .''....',,,,,';dkd;. .'''''...cxkxc,;;,';:;;::oxkdc'. ..',,;'... .,ccclll;. //
// :::clxkdoooodddxxkkkkc... ..,:odkkxl:;,''',',,'...'lkx:. .........'lxkkl;''';:;:ldxdc'....'''',,,. ....;odooool' . //
// ooddxxkkkkkkkkkxxxxxl,'... .. ..,codxkxoc;,'..,. .;xxc. .''''',,;,..'lxkxl;,,:ldxxl;....'''''''',,. ....:ddooool' //
// ddddddxxxxxxxxdddooc,'.... .'.. ..,:lodxxxoc::,',:dxc. .,,'..''',;'..'cdkxoloxxo:'.. ..''''''.',;. .. ,oddddxo' //
// :oddddddoollcc:::;;,'.. . .'',,... ...,:lddxxkkkkkxl. .,,,''',,,,;;'..':dkxdl;,'.'. ..';:;...,;'. . ;xkkkkkd,':;. //
// .;cc:::;;;,;;;::ccl:... . .',:ll,,,. ...';;:ccc;. .'''''.',;'';;,. .:lc:,.';,.. ....,:,..';,. ...:dddxxkd'.;;. //
// .;:::clllloooddddd:.. . .,:ol;',' .. .. ..,;;,...........',;:;,'..,;,;,,;:;..... ......',..',,. ..,dOOOOOx;. .; //
// ,cclodddddddooooo;. . .,,:oc'','. .. ...,,;,,,;:;,,''','''',,;,,,,;,'''''';:'.',''''''''','.',,'. . .cxxddoo:. ,d //
// .:llollllllllllooc. . .;,',,'.',. .... .;;,''...,::;;::;'....','';:,.'''''',:'',,,,''''''..,'.,,,. .. 'loooool' .; //
// . ':cccccccllcccc:,. . .,;'...'..'...'.. .;;,''','..,:;clc;.. .,'.;:,...''',:,....... ..'. .,.,,,. . .coolcc:,... //
// ,::cloolcc:::;;,,'..... .,,. .'.....'... .:;'''''...;:;::;;'....','.'::;,''',,.... ... ..'. .,,;,'. . ,c:;:loo:,. //
// ldo::c:llc:;,';:'..... .';'. .'. ..'.... .;:;......,:;,;;,;,,;;,,,'''';;;::'. ... .... .'. .',,,'. .. .'',cooo;. //
// .''..;::::::;;;'...... .,,,....'. ........ .',;;;,,,;;;;;;;;;,,,;;;;;,,,,..;;. ...'....'. .''. ...,,'. . .,''''''.. //
// ,clllodddo:,.. . .',,,:c,''. .'.. ......'';:'.,,,,;,,,,,,,,,,,,,,,',;;. .''''';:,''..'''..'..',,.... .coc;'.. //
// .:clooddddxdc. . .','.;l;',;,..'. .... .,;',c;,:c:;,.....'',,,'..';:'....''..,''',,,'......,:,.... ;oc,. //
// .,ccccloood:.. .,,'.,c;',:;,''.. ..'.. .;;';c;,:c;,,'......,,'. ..;:. ..'''....''''...'.,;'',,'.... .,'. //
// .,;;,;,,;ox:. .;:;..,c,.,;''''....'''......;;',:,;cc:,'.. ....'''...';;. .'..... .....',:lllc;..... . ,c:'. . //
// .. .,,;;::cdd:..,oxxd:.,c,.,,..'....'''''.....;;.';,,;;,,,''''''',,,,,'';,. ...'.. ....'',coooc;..... . .lxd:. //
// .. .'',,;;;;'...'oxxd:.,:,.;,'''....'''..... .;;.',,,;;,,,,'''..',,'....;,..'..... .....,...,;::;...... ..';:;. //
// ..',,,,,'''. '::'..;:'.;,..'....'''''''...;,.',,,;;,,,,,''..',''....;,...'...............,;:::looc'..:c:;'. //
// ... ..',,''.... .,c:. .;;'.;,..'..,,''',,''...:,.',,,;;,,,,;,'..,,'''..';,....................'''cxkkx:.......,,. //
// . .. .;ll;'. ....,c:. .,,';c:''..';;''',,''. .:'.,,,,::;,,;;,'..,,''...';,............... ....'',;clc,. ... . //
// . .',,;;:;... ......';;lxkko;...,:,'..'.. ':'';,'';c;'',,'''',,''''.';,. ......'...... ............. .. //
// ... ......'.. ..';loooclxkkl,....'''.... .,:.';,',;:,'','''.''.....'';;... ...'....... ......,;,:oc. .'...': //
// ..,c:'. ....... ..',coolc;';c:,,....'''..';'..;;.','',:c:;;:;....,. ....';;'.............. ....'',cl;. .;,:lc, //
// .;dOkl. ... ',........:oc,',,:oc..,''''';:,..;;.,:,''clllll;...','.....':,. .......... .,,,...,.... .'':ol, //
// //
// //
// JakNFT 1/1s //
// //
// //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
contract JakNFT is ERC721Creator {
constructor() ERC721Creator("JakNFT 1/1s", "JakNFT") {}
}
// 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 ERC721Creator is Proxy {
constructor(string memory name, string memory symbol) {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
Address.functionDelegateCall(
0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
abi.encodeWithSignature("initialize(string,string)", name, symbol)
);
}
/**
* @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
// 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 {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (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 functionCall(target, data, "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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(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) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(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) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason 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 {
// 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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
assembly {
r.slot := slot
}
}
}