Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: Bullish Circuit Sentimentality
/// @author: manifold.xyz
import "./manifold/ERC721Creator.sol";
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// .@@@+ *@@@ .@@@+ *@@@ :@@@+ #@@@. .@@@* *@@@ .@@@+ *@@@ .@@@+ *@@@. .@@@+ *@@@ :@@@* *@@@ //
// .@@@+ *@@@. :@@@+ *@@@. :@@@* *@@@. :@@@* *@@@. :@@@+ *@@@ .@@@+ *@@@. :@@@* *@@@. :@@@* *@@@ //
// @@@@@@@@@@@- @@@@@@@@@@@- @@@@@@@@@@@: %@@@@@@@@@@- @@@@@@@@@@@- @@@@@@@@@@@- %@@@@@@@@@@- @@@@@@@@@@@- //
// ###%@@@@###=:::###%@@@@###=:::###%@@@@###-:::###%@@@@###=:::###%@@@@###-:::###%@@@@###=:::###%@@@@###-:::###%@@@@###-::: //
// .@@@+ *@@@ .@@@+ *@@@ :@@@+ #@@@. .@@@* *@@@ .@@@+ *@@@ .@@@+ *@@@. .@@@+ *@@@ :@@@* *@@@ //
// **%#---#@** .%@@#--:=*** .***- =*** .***- =*** .***- =*** ***- =*** .%@@#---=*** :=@@@#: =*** //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// ......+@@@@@@......*%%%%%* =%%%%%#......#@@@@@#...... //
// @@@@@@@@@@@@@@@@@@@: -===:=== -=-..==- -. -:-. = .- =: :: :==- :- -: .@@@@@@@@@@@@@@@@@@@ //
// @@@@@@@@@@@@@@@@@@@: +#.-@++ %+*#:@=#=.%#+ %= @*#. @#++*=%..*% *%* .@@@@@@@@@@@@@@@@@@@ //
// @@@@@@@@@@@@@@@@@@@: =# -@==.%-#=:@:%: -% %*=.@:#+.@:=@*:%==%+-%=%- .@@@@@@@@@@@@@@@@@@@ //
// +@@@@@@ *@@@@@* .. =@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// .:::::=%%%%%%@@@@@@@%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%@@@@@@@%%%%%%+:::::. //
// -@%::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::#@= //
// .: := -@% --::-=::-.:-: :#+ *#. *#. =#- -#= .#* .#* +#: +#: -#+ :#+ ## ## =#- :=:-:--:::.--. *@= -#: //
// :@%+::+%@* -@% ====-==-==-+: .==++== -=++==: :==++=- ==++==. -=+++=: .==++== ==++==. -=-==-=-===== *@= :======*@- //
// =@@@@= -@% -=+=:-=-=-=+: .+*@@++ =+%@#+: :+#@%+= ++@@*+. -+%@#+- :+*@@++ ++@@*+: :-+==:=---=++ *@= =******%@- //
// .#@%==%@#= -@% +=+= :* .=+-- .+*@@++. =+%@#+- -+#@%+= .++@@*+. =+%@%+- :+*@@++ ++@@#+: -===- +- -===. *@= =@- //
// .=. .=* -@% **==-...-*-=- .** =*: :*= **. -*- .*+ +*: -*+-=:...++-+ *@= -++++++++: //
// :#@@@@%= -@% ==--==--=-++-::=:=:=:-- =.==-:-= .=-:=:+:-:.-----:-=. =----=--:::-------::-=--+-=--++= *@= #@+=@@=#@- //
// :@%-. :+@# -@% =---:-:::--=-:-=----:--=---=-=---:---------=---=-=---:--=-----:=-----=----=:=:::::--=- *@= #@. %% =@- //
// =@+ @@ -@% == :=: ==.*:#@%=-#@%-=%@#:=@@*:+@@+:*@@=:#@%--%@#-=%@#:+@@*:+@@+:*@@=+:-= == -=. *@= =+ -- :=. //
// .@@+--=%@+ -@% --@@=-+*- ++.@@@=.*@%-:#@%:-%@*.=@@*.+@@=.*@@=:#@%-:#@#:-%@*.=@@+.+@@+.*@:=+ -=@@--**. *@= =********: //
// =#%%#*: -@% ##@@%#=:. ==.@=:*@%-:#@#:-#@#:=%@*:=@@+:+@%=:*@%-:#@#--%@*:=@@*.+@@+.+@%#:-+ :#%@@##:: *@= -==+@#=*@- //
// .========- -@% %%. +%= ==.#*@@*-#@@+-%@@==%@%-+@@#-+@@*-*@@*-#@@+-%@%==@@%-+@@#-*@@*:+:-= .%# #%: *@= :+%@@#:*@: //
// .*****@@@# -@% :: .:. -+.*.....--...:--..................................--:..:--...+::= :: .: *@= **-.:*%#= //
// .=#@%+: -@% ..@@:.*%= =:.* -@@- %@@ :@@+ *@@: =:-: .:@@..#%: *@= :========. //
// .#@@#=---: -@% .@@@@@@- +=.* :%%%@@%%%:.. %%%@@@%%=.. =:=+ :@@@@@@. *@= =***@%*#@- //
// .********+ -@% @@. *@= +=.* .++#@@#++==- ++#@@%++===. =:=+ .@@ %@: *@= -+%@* +@- //
// := =* -@% =-.* -@@- %@@ .------. .------. :@@+ *@@: =:== *@= #%+--%@@* //
// .%@+..*@@= -@% @@. *@= :..* +@@@@@@= +@@@@@@+ =::: .@@ %@: *@= . :+- //
// -#@@%= -@% .@@@@@@- ==.* -@@- %@@ +@@@@@@= +@@@@@@+ :@@+ +@@: =:-= -@@@@@@. *@= :+%@#: //
// :###@@###* -@% ..@@-.*%= ==.* .==*@@*==+++ +@@@@@@= +@@@@@@+ ==*@@#==+++. =:== .:@@..#%: *@= #@@@@@#. //
// :::::::=- -@% :: .:. ==.* :@@@@@@@@. =######%@@@@@@%######=::::::..@@@@@@@@- =:-+ :: .: *@= .=#@#: //
// @% -@% #%. +%- ==.* -@@- %@@ +@@@@@@@@@@@@@@@@@@@@= :@@+ *@@: =:-= .%# #%: *@= .=: //
// .======+@% -@% ##@@%#=:. =+.* .--. :-- +@@@@@@@@@@@@@@@@@@@@= --. :-- =:-+ :##@@##-: *@= *@@@@@@@@- //
// .********+ -@% --@@=-+*- =:.* :**: +** -######%@@@@@@%######=::::::. .**- -**. =:-: -=@@--**. *@= #@-...... //
// :#=. -@% -- :-. +=.* ::+@@+::*## +@@@@@@= +@@@@@@+ ::=@@*::+##. =:=+ -- --. *@= *%. //
// =#@#=---: -@% **. =*- +=.* :@@@@@@@@. +@@@@@@= +@@@@@@+.@@@@@@@@- =:=+ .** +*. *@= =++++++++: //
// -*@@%%%* -@% ++@@*+==: +=.* ..+@@+..#%# +@@@@@@= +@@@@@@+ ..=@@*..+%%: =:== .+*@@++==. *@= -+++@@*++. //
// :@@*- -@% ++@@*+==: -:.* :**: +** .=:-:.-=+*+*=+= ::.=.==**=*+. .**- =**. =:-: .+*@@++==. *@= :*@%#@*: //
// .-:-: .- -@% +*. =*: -=.* .::. ::: # #+-+*++=:* #:*+:*=#=-==*+ ::. .:: =:-= *+ +*. *@= *@#- .*@- //
// %@#@#+%@* -@% == -=: -=.* -@@- %@@ :@@+ *@@: =:-- == -=. *@= -. .. //
// :@= =@*- -@% --@@=-+*: =+.* :%%@@@@%%:. .%%@@@@%%-.. =:-+ .-=@@=-+*. *@= *@@@@@@@@- //
// :@@@@@@@@# -@% **@@#*=-. ==.* .++#@@*++=== ++*@@#++===. =:== :*#@@#*-- *@= .=#@%+. //
// ..:.....: -@% ##. +#- -=.* -@@- #@% :@@+ +@@: =::= .## *#: *@= .+%@#=. //
// *@@@+-*@# -@% :: .:. =-.#----------------------------------------------------------*:=- :: :: *@= #@@@@@@@@- //
// :@+ +@#+: -@% ::@@-:+#- +=.*:#@%--#@#:=%@*:=@@+.+@@+:*@%-:#@%--%@#:-%@*:+@@+:+@@=:*@%=+:== :-@@::##: *@= .::. //
// :@%#%@###+ -@% .@@@@@@- +=.@@%-:#@%:-%@#:-%@*.+@@+.+@@=:#@%-:#@#:-%@*:=@@+.+@@+.*@@=.*@:=+ :@@@@@@. *@= =%@@@@%- //
// .--------- -@% @@. *@= ==.@-:#@%-:#@#:-%@*:=@@+.+@@=:*@%=:#@#--%@#:-%@*.+@@+.+@%=:*@%#:-= .@@ %@: *@= *@*: :%@- //
// :#= +* %# -@% -:.#*@@*-#@@+=%@@+=%@%=+@@%=+@@#-*@@*-#@@+=%@%==%@%=+@@#=*@@#-*:=: *@= @@. =@+ //
// :@+ #@ @% -@% ++-=-+-==:-+=::=:-:=:-: -.-::::- .--:-:=:-:.::-::::-. -:--:-:::::::::::::-+-=-====::++. *@= -@%+-=*@@. //
// :@@%@@%%@% -@% --==-++-+=-*: .:.:.: ...:..:.:.: .....:...:.:.:.:.:. ........ :.....:...:-====+-=+=+= *@= .+*##*= //
// .+-::::::. -@% ==== :=.:=+-- .@@ *@- -@# @@. +@+ :@% %@- --+-- =:.-+-= *@= ##=. .=#- //
// :@+ -@% *+==..- :===: :%%@@%%. #%@@@%= =%@@@%# .%%@@%%: *%@@@%* -%%@@%% %%@@@%= -+==- -. =-=- *@= .=#@%#@%+. //
// :@@@@@@@@# -@% +*+==-.:===== :-@@:: .:#@+:. .:+@%:. ::@@-: .:#@*:. :=@@:: ::@@=:. -++-==.-:=+=+. *@= -*@@%@*- //
// :@*..... -@% ==------=-=+- :#*::*#. *#-:+#- -#+:-#* .#*::*#: +#=:=#+ :#*:-## ##-:+#- :+-=::----++= *@= #@*- :+%- //
// .-: -@% ...:.::...::. .-: -- -- :-: :-: -- -- :-. :-. .-: .-: -- -- :-. ...:..:::..:. *@= . //
// -@@++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++%@= //
// :+++++*++++++%@@@@@%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++#@@@@@@++++++*+++++- //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// ------#@@@@@@------+*****= :- .- :==: .= =.-. -.=== :. :- -.-: = ===. :: -*****+------%@@@@@#------ //
// @@@@@@@@@@@@@@@@@@@: *#%.*#..#+=%#.@..#[email protected]@ #+ %*%-.@+@ ==%= +* .@@@@@@@@@@@@@@@@@@@ //
// @@@@@@@@@@@@@@@@@@@: .#+%-=%==%-=#.%@.-#-@. :@.#=#+-%=%=+#=@ =+%==##= .@@@@@@@@@@@@@@@@@@@ //
// %%%%%%@@@@@@@%%%%%%-..... . .. . . . . . .. .. ... .... .....:%%%%%%@@@@@@@%%%%%% //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// +@@@@@@ #@@@@@* +@@@@@% #@@@@@* //
// @@@% =@@@- %@@# =@@@- @@@# -@@@: %@@% -@@@- %@@# =@@@- @@@% =@@@- %@@# =@@@- %@@# =@@@: //
// %%%#...+@@@=...%%%#...=@@@=...%%%#...=@@@-...%%%#...=@@@=...%%%#...+@@@-...%%%%...=@@@=...%%%#...=@@@-...%%%#...=@@@-... //
// .@@@@@@@@@@@ .@@@@@@@@@@@ :@@@@@@@@@@@. .@@@@@@@@@@@ .@@@@@@@@@@@ .@@@@@@@@@@@. .@@@@@@@@@@@ :@@@@@@@@@@@ //
// :::-###%@@@%###:::-###%@@@%###:::-###%@@@%###-::-###%@@@%###:::-###%@@@%###:::-###%@@@%###:::-###%@@@%###:::-###%@@@%### //
// @@@% =@@@- @@@% =@@@- @@@# =@@@: %@@% -@@@- @@@% =@@@- @@@% =@@@- %@@% =@@@- @@@# -@@@- //
// //
// //
// //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
contract BCS01 is ERC721Creator {
constructor() ERC721Creator("Bullish Circuit Sentimentality", "BCS01") {}
}
// 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 = 0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1;
Address.functionDelegateCall(
0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1,
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 v4.6.0) (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
}
}
}