Contract Source Code:
<i class='far fa-question-circle text-muted ms-2' data-bs-trigger='hover' data-bs-toggle='tooltip' data-bs-html='true' data-bs-title='Click on the check box to select individual contract to compare. Only 1 contract can be selected from each side.'></i>
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: coupofgrace open editions
/// @author: manifold.xyz
import "./manifold/ERC1155Creator.sol";
////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// //
// //
// Ñ▓▒╠W▒╠╬╟H╠Ü╬╬╬╬╬▒▓╬▓▓▓▓╬╟╬╬@╢╠╣╬╠╟╬▓▒╠╠╠╬║╣▐▒╞Ü :∩░░▒╟]╙▒⌐j╣▒╠╬▒▒╠[╠╬╬Ü╣╠Ü╬╠Ü@╠ //
// N▒╢▒╙╬▒╩╬Ü╠╬╫╠╬╬╬Ñ╬╫▓╬╬╣╣▓▓▒║▄╬▒╬▒╬╬╠╬║▄╠╣╫▒╣▒▄╩H╔╠╠▒╬╢:░▄Ü░╟▒╬▓▒Z╠╠╬▓╬▒╠╠╬╬╬╬╬╟ //
// ▒╠╣▓DÜ╠╠╣1Ü▓Ü▒╣█▓╬▓▒▓▒╬╢▌╬▒╫▒░▒╠▒╠╟╬╟╬█╬╜`_`╚╩╬▒╚²╚╢╣Ñ╬░╚'ÜÜ╟Ñ╠╚╠░░╠╬╬╬╬╩╠▒╬╬╚╬Ü //
// Ñ╣^` `╙╠╝^ `'^▒`"'╬`"'╬^`"╙ `'╫▒▀```'Φ▌' `j▓^ ⁿ╗╜``╨ `╚``_`'#▒╩` ``╚φ▀"` '╠║ //
// ▒ [╬╖╓╬ ║▓L '╣ ╬╣ ▀╣H ┌╬≥ Γ ▓▓ ╠▒ ▓╬╣ ╙ [╬H ▒╓╔Φ-'^ ▒▌ ╬▒,╔░ `` ╠ //
// Ñ_ `╙ [_ '▀ ⌠╬ ╙╙ ╙╠L ╙ ╒▌ ╙▀ ╬╜ ╙╫_ ^ⁿ^^╩R` ╙╠▒ ªM ╙╣ ╙╙ ▒ ªª``╫ //
// ▒║▒φ╦φ░╬╬$φ=φ▓╣╣▓φφφ▓@m╙ !=φ@╬╠▓φφφ@▓▓φφ@╗╣ º#K ▒φ=@φ╠╢▒╦φm▒≡╦╣╬▌╦=#▓╣╬φ≡φ@╣Ü //
// ▒╫▒╠▒╠╬▒Ü▒╠Ü╝╝╠╫█▒▓╠▓▒╠▒╗╗#φ╬╬╬╣╬▒╬╠▌▒▓▒▓▓╠▓▓╗╓╖▄φ▓╬Ü▒▌▒▒,╠Ä╣▒░▓▒╩╠▐▒▒╩╠▒╬▒╬▒Ü▒Ü //
// Ñ╟▒╢▒▒▒▒╠ÜÜÖÜÜ╬╠▓╟╠╬▓╠╠▒╬╟╬Ö▓╬▓▓╬▓╬╠╬▓╫▓▓╬╟▓╣▒▓▓╬╬▒╬╬╠▌ÖΓ╣▒▒╟▒╠╩╠░╙[ÜÜ░╠╬╠▓▒╠╣╬▓ //
// Ñ╬░╣╬║╩╠░╚╬╫╠▒╬Ü╬╣╫╬▓╬╣╬▐╬╣╫╣╬▓╣╬╬Ü╫╢╩╬╟Ñ╬|╙║▓╬╬U╙╬╢╫▒▓╫╬▀▒╠╟▒╠╠░░╓▒╠║▒╢Ü░╬╠╚Ü╢Ü //
// ▒╬▒╠▒╠R╚▒╬ÜÜ╬║░╫╠╬▒Ü╬╟╠╫╠╟Ñ╫▓╬▓▒╬╝[╬ _Ü╬[▒▒Ñ▒░D░Ü╠Ü╠▓▌╬▒╠╟╣▒]Ü║Ü╚╟▓Ü╠╠░Ü╠D▒╟░╟ //
// ▓╬▒╠╠╠╗¼▒░╦░╬╬3╬¼╬╟▒╫Ü╠▒╬╫▒╠╬▓╙╙Ü `_ ` ]╬░╙╟▒Ü▒[░\╠▓@▌╬╬╬╬▒╫H╠φÖj▒╬╬Ü╠╟╠j╬╬╠Ü▒╚ //
// Ñ╬╬╠╫╢▒Ü╠░╠[╬╠ÜÜ╬╠╬╬╟Ü▒╣╬╢▓▒╬▒▒___,░ _ ╙╬╙╜¼╬╜╬╬▒]╣╬▄▓╣╢[Ü╬▓▓▒░╠╬▒║▒╬▒╟╬╙╠║▓▒Ñ▒ //
// ▒╬╬[╬╠╠╬░▓╬╠╟Ü▒╣╠Ü╣▓▌░╬╠▒╟█▒▌░Ö ░ Γ`` » ╬░ ║▒[╬╬░╠╬╬╣▓▓╬▒▓╬╣▓▒║╬╬╠╠╬╬▒░░▒▓▒░╬ÄÜ //
// Ñ╬╬▒╠╣╣╬▓╣╬╟╠╬╬╣╠╠▓╙▓╬▒╠▓╣╬╬Ñ╣H»Ü»∩░░:┌`»╬░`║▒╠╬╬▓╫╬╬╬▌╬╣╠╫▓╣╣▓▒ÖÑ╙║▒╬╗╗▒╠╠▓▒╠▓╬ //
// Ñ╝╬╣╬╠╬╬╩╬╬╠╬▒╬Ü╩╠▀╬╟╣▓▒▓╣Ñ╢╠▒Ü░»░Ü░░░_░░╬Ü░,▒║▒▒╠╬▓▓╬▓╣╬╬╠▒╣▓╬╠▒Ü░[╬Ü╠╠╬╩Ü[▒╠3▓ //
// Nj╬╬╚▒╬╬╠▓▓▒╬╬╣Ö▌╠▒╙▓Ö╚Ö╟╬╬╠▒╬▒░j▒▓▒░░░╬▓▓▒░Γ▒`╠╠╬╬╬╣╣▓▓Ö╣▒▓╫█▒╠▓╣▓╟▒▒▒╠Ö║╬Ü╬╬╬╣ //
// Ñ╚╢╠╬╬Ñ╬╬▓╬╬▀╫Ñ╠▓▒▒▒╣╬║╜╬╟╣▒╬▒▒╢╠╣██▒▄╙▀▀▀M░░H_ ,░╟╬▀╠▓▓╫▓▓╬╣█▓╫╬╣▒╬╬╠╬Ü▒|▒╠╬╟╬╬ //
// ▓▓▓╠Ü╠▓║╣╬▓Ü╠╬▒╟╠╟▌╟▓▒╠▒║╬║╬█▓Ü╠║│ÜÜ╟█H░ __▒Ü▒░_╚J▓╟▓╣▓╬╬╣╬╢██▓▓╬▓╬█╬░╠╬╬╫▒╬░╠╬╬ //
// Ñ╠▒Ü╠╠Ñ╬▒░╬Ü░╫▌║╬╠▒╠▓▒║▒╠╣╬╣▓╬╬╩╠╬╗╬Ü░|░_»»╬Ö▒░ ^╙╬▒╟╣╣▓▓╣█▓╬╣╣╬▓╬Ü╠╬╬╬▒]╠Ö╠╠ //
// Ñ╢╬╠╬╣╬Ü▒╣╢Ü╢╬╬╬╠╬╬╬█╣╬╬╢╫╬╠╬╫╢╬╬▓╫▓¼╓▄▓▌╫Ü ¡▒Ü_ ╙²Hⁿ╜╫▒╟╢▌╠╬▀╬╬╬▒╬▒Å▓Ü░╚Ü╟╠╠ //
// N╠▒╠╬╫╣╬╬╬╣╟╠╬╬▒▓╬▓╬╬╣╣▒▓▓▌╟▓╣╣╣╬╬ ' ╙Φ"└`¡ |▒[ H `'╘╩▌╠╫▓╫▒╟╬╠╬░╠╠▒Ü╣╬▒╠ //
// Ñ╬▒▒╬╬╬▓▒╣╬╣╣╬╬╫╣▓▓╬╣╠╬╣╬▓╬▒╠╗L ╦¡ [▒╙` H J▌ ^╙Ñ╫H╠╬░░╬╬╬╠╦╠╬╣ //
// Ñ╬╣▓▓╬▓╣╬█▓╬╟▒╣╬╬╠▓╬▓▒╬▒╬╣╣╬╩╚U | ²RH░ _ H J▌ ╘▒▒╬│▒Ü╩Ü╠Å╣╬╟╩ //
// Ñ▒╬▌╣▓▓╬╬╣╬╠╣▒▓▒╬▓▓╬█▓╚╠╬╟╬╣∩ ¡ ¡ ¡_ H :░░_ H `¢▌ `|╫╠ÖÑ░╟╣╬╟╬╬V //
// ▒╟▒╠▒╠╬╬╬╫╣▒▓▓▓╬╬╬Ä╫█╫▄╫╬╣╠▒Ü |░ _ ¡ [ ∩H `` ` _ U _▐▌_ [╠▒╬Ü╬╬▓▒╬╙Ü╠ //
// Ñ▓▒▒╬╬▒╣╬╠╬▓╣Ü╬Ü╣Ñ╣╬▓╣╬Ü╩╬▌╠▌░╠▓▒_⌐ ⌐ | ░` H _ `▒ : ;░J▌░ [ÜÜ▒║▒╢▓▒▒░D╠ //
// ▒D╬▒╠Ö╬╬▓╠╬╬╬╬╬Ö╬╬╬╠╬▒╬▒▐╣▒╠╬╬╬╬Ü░░` ` ░: ░_ H _» H `»`░3▌░ `'╠▒▒╠╢D╣▒╬╠╣▒ //
// ▓Ü▄╬▀╣▓▒╬╣╫╬╢╬▀Ü╠╬╣▒▓╢▒╠╓╣╬╬╬╬╫╬╝╙: ¡ ` `- H »» _!H `╚╣▌_░»_ »╠Ü╢╫╣╬╣╢╠╠▒▒ //
// ▓╣╬╬▒╟╬╠░╠╫╬╬╬╬╫╠Ü╣╬Ü╠╬▒╬╬╠╬╠╣╬ÜH__░∩__ ` »»_H »__▐H` ╟▌;░`░»∩╠Ü▓╠╠╬╣╬▓▒╬▒ //
// ▒╬╬╬▒╬▓Ö╙╩╣▓╬╚╙╙^'/ ░╙'╙╙╠∩ ▐H╙ [ÜÄ╠¼╦ ░ `H» :░╙3H» ``j╬▌╩╩`» ∩:╠╣╬╣╣╣╬╬╫▓╬ //
// ╝▒╬▒╣╬▓▌▒╚╩║ ╚╛ ░ ╠╣╠⌐╘▒⌡_╩▒Üܵ╝[▒ H ¡H ]╝╠▒Ü∩ ` ║█▒▒░»░»_╘▒╚╣╬╣▒╝╣▌╩ //
// M╫▓╟╣╬▒╬║▒Ü╚ ░ ``j└ ]` `╟╠▒Ö░Γ▒ `'H` ╚H╚D╠H »|╫█▓Ü▒░╠∩» `⌡╣▓▓╬▌╠▒[ //
// ▒╫╬╬╣╬╬╟▒"╙ Ü - _[_ ² ╓ |╠░ H ╙ ` │² █▒╬░░░Ü░ ╙▒▐▒▒╟╠Ü //
// ▒╣▓╬╠▓╩_ _ _╠▒▒_▒╠░░ ▒ │╬Ü_` H , ` Ñ╫╬D░░»░ 1▒╠║╠▒░ //
// Ñ╫╬▓╚^ ⌐ » __░Ü╠▐φ[╠╠Ü_ »:╬ ':D _Ü H ` "╠_Ü░░░` ╙╫║▒▌╠ //
// ╬▓▀Ü╠ H ░╓░∩__∩ ░µ▒▄╣╬╙ ║H╚_ `└╣ ¡»░:H, _ H » _ ░` `╠▒░]» _ !╣╣▒╬╠ //
// ▒╬╠╬╣∩ `░Ü╠▒░_░»░û╠▓╬╠╬⌐ ╠``` »H`_»j░»:H` H __ _ ` [▒Ü▒» ¡ ╠▓╣╣▒ //
// ╬▒╣▒╙H_,╙╩▒╟╚H░░░╠╬█╬╬╙ ║ ,_ H` ░░╬╬░»H H `░µ░`_ `] ,∩╙╬Ü░░░ _╠╬╬╬╬ //
// ▒╣╬▓▓H_▒▒Ü╬R▄▒▒û▒▓▒╟▒▒ ╠ ¡ _░╬▒╬▒╝H__ ▌_ _ ░_»_ ` » _H»╝▒Ü` ___!╠╬╬╠ //
// ╬╬▓╣╬╫╬H╠║╬▒╬╬╬▓▌╟▌╫╬▒_ ║ `_ ` _1╠ÖÜ╠╔HK▀█▌▌»█ _¢▌ ░ █⌐ ] »░»[╬▓░»»░» ╠Ö▓▒ //
// ▓╣▓╬██▀██╬▀█████╬▓████h▀██▀█▌ ╓██▀█"╟█▀▀█▌▌▀█⌐▀██▀ ▀█M ▄█▀▀▌ ▀██▀██╫▄█▀▀█▀▒▀╬ //
// ▒Ü│Ü█▒Ü░█▓▓█╬Ü▒█╣█████░ █╚ ╞▌ ` |██▀▀█M█▌╝Ü█▌▌▒█░░█▌▐▌_█MJ█ █⌐µ█∩[╣█╬╬█▀██²╝╬╫ //
// ▓▓╣▓╬███▀╬╣█████▓╠████░███≡█▀m _'╠████¬'▀████████@╙██▌███≈╙█æ█▀ ███Ñ███████▀ ╠╬ //
// ╬╬╬╣╬╬╬╬╬╬███Ñ╟▓▌╢╣╬╣╬╬░_ ░, ,∩░╙Ü:Ü »_░`_'╠|╠╬╬▄▒▒⌐ »`_ __»_!░░░_,,░Ü__░`_. ] //
// ╬▓╬Ü▓▓╬╬╬╫╬╫╬▒╬╬▌╠▓╣╢▓╬╠`»▒▓_ [░░░»░] » ]``_╠░╟╬╣╬╠▌░░░`»» ``_`` ░░░░|╠░_;░»_░_╙ //
// ▒▒╚╩╬▒╚Ü╚╩Ü»╙╙/╔∩║╬╬╣▓╫╬░`╠▒∩»╦▒Ñ▒░░!░░░▒░░▒∩░╩╢╬▓▒∩╔▒▒░░»»░`:░∩:░░░ÜÜ░Ü░╠▒░░▒░╔ //
// //
// //
////////////////////////////////////////////////////////////////////////////////////////////////
contract COUPOE is ERC1155Creator {
constructor() ERC1155Creator("coupofgrace open editions", "COUPOE") {}
} <i class='far fa-question-circle text-muted ms-2' data-bs-trigger='hover' data-bs-toggle='tooltip' data-bs-html='true' data-bs-title='Click on the check box to select individual contract to compare. Only 1 contract can be selected from each side.'></i>
// 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(string memory name, string memory symbol) {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x6bf5ed59dE0E19999d264746843FF931c0133090;
Address.functionDelegateCall(
0x6bf5ed59dE0E19999d264746843FF931c0133090,
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;
}
} <i class='far fa-question-circle text-muted ms-2' data-bs-trigger='hover' data-bs-toggle='tooltip' data-bs-html='true' data-bs-title='Click on the check box to select individual contract to compare. Only 1 contract can be selected from each side.'></i>
// 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 {}
} <i class='far fa-question-circle text-muted ms-2' data-bs-trigger='hover' data-bs-toggle='tooltip' data-bs-html='true' data-bs-title='Click on the check box to select individual contract to compare. Only 1 contract can be selected from each side.'></i>
// 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);
}
}
} <i class='far fa-question-circle text-muted ms-2' data-bs-trigger='hover' data-bs-toggle='tooltip' data-bs-html='true' data-bs-title='Click on the check box to select individual contract to compare. Only 1 contract can be selected from each side.'></i>
// 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
}
}
}