Address Contract Verified
Address
0x2b8E61AAe858f7Ad9a8b894D2a1740aB976be71c
Balance
0 ETH
Nonce
1
Code Size
808 bytes
Creator
0x209Aa937...b967 at tx 0x75b2e3a7...9bd6f9
Proxy
EIP-1967 Proxy Implementation: 0x6bf5ed59...3090
Indexed Transactions
0
Contract Bytecode
808 bytes
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
Verified Source Code Full Match
Compiler: v0.8.17+commit.8df45f5f
EVM: london
Optimization: Yes (300 runs)
GFNIX.sol 96 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: Golden_FNIX
/// @author: manifold.xyz
import "./manifold/ERC1155Creator.sol";
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&#&&##########################&###&&#####&&&& //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&##&&#&&################################################# //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&######################################################### //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&################################################################## //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&######################################################################## //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&############################################################################## //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&#########################&G5?5&&################################################## //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&######################G~P?!GB7.:B##YB#&############################################# //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&#################B##YYB###BY!!?YGG~!!J7!B@&#GPBB######################################### //
// &&&&&&&&&&&&&&&&&&&&&&&&&&&##&##################&Y:^7YGB##GG:Y#G7::^..5@@@&555B######################################### //
// &&&&&&&&&&&&&&&&&&&&&&&&########################GG?!JPGP&&@&J!~:..:^^7&@@@@#GP&&&####################################### //
// &&&&&&&&&&&&&&&&&&&&&&###########################&&Y55G&@5PBBP~~!~~!?PB&&&&&&#GG###&#################################### //
// &&&&&&&&&&&&&&&&&&&###########################BB^P&@@#P@&JJ5GG57~Y&#&&&@@@@#5GGG&&############BBB#BBBB#BBBBBBBBBBBB## //
// &&&&&&&&&&&&&&&&&############################&&####GPB&&GP#PP#GGBG5~~YG#&@&@@@PPB5GBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&&&&&&&&&&&############################&@@&@&&@&G5YPYYBB#&#P5PJBGPP#&@&#&B?JPPPPJ5PYBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&&&&&&&&###########################&&&@@@@&&&&##G7!7Y5BB&&#&@@5J5BYP&&B5J!?JYJ?^.:G?GBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&&&&&&#############################@@&@@@&&&&#BBBY~7~~J5B&@@@@&JJ55JYP5!5J?Y!....~BYJBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&&&#################################&@@&&&&&&B~^:7YGP#&G5G&@&&@@PP#&&P!~7~!J:....JP7YBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&&&##################################&#&@@@&BJ~...:~?PB&#GG#&@@&^~#@@:.^:.::.^^:!#BJGBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&####################################@@&@&&BB7 ...:^!J!?G7&&:.~P#J.::.....^^^J55GBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&###################################&@@@&&&&#J~:...!5BGYYG&@&G5Y~77~^::.....::^^!5PBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&&&#################################&@@@@@@&#GP?77!~~7!7JP#&@P:...~7775Y7:::::^~^PP?BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB //
// &&###################################BB####B5YYYJJ?!~^:^~7J5BB!:.. ..:YJ7!!^...~GPY##BBBBBBBBBBBBBBBBBBBBBBGBGBBBBBBBB //
// &&####################################&B5?JB#PJ!~^^:^^~!:.?PPG#BYYG7 .:.~JY!!~:^!YBBGP5BBBBBBBBBBGGGGGGGGGGGGGGGGGGGGGGG //
// &##################################BBBBY~^!GPY~~!^^^^^:!7:.~?7!7YBJ~75J^^Y5!755?P&&&#YGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ##################################BBBBG7~~Y57?!!!^...:^??!7^:^:^7?Y#BB?^:YP!~!^~J55YP5GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// #################################BBBBBB#&&&&&JJ?77^ .::!?!??~^^!J5G5?P?^:?Y7:::7J~~^?GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ################################BBBBBBBB##&##B###&#~.^?P5YJ~!:!YP##57GJ^.7J7:~~::..:YGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ################################BBBBBBBBBBB75#&&@@@J^7JYYJP~~.JGG#B?!G7::!777:..:~.!5GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ###############################BBBBBBBBBBB&GP#@@@@#7?5J!::77..YPB&#P5#JJPY!^::.:7!JPGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ##############################BBBBBBBBBBB&@&&@@&@&&###P?!~7?~^7YPP55J77PB?^~7~^??YGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ##############################BBBBBBBBB#&&&@@@@@@&@@@P?77!^^:^!7?JJ?J?JY!::^~7YPPGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG //
// ##############################BBBBBBBBB#@&&&&&&@@@&&&B~:^^::~:~J5GBBJ!~^..:.:~7JPGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGP //
// #############################BBBBBBBBBBB&@@@&&@@&&@@@@#?~^^^:^.7J7~^:.:..^J?^!J5PGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGPPPGPP //
// #############################BBBBBBBBBB&@@@&@&&###P&@@@&#GBJ... ...::::.~?YPY??PGGGGGGGGGGGGGGGGGGGGGGGGGPPPPPPPPPPPPPPP //
// ############################BBBBBB#&&@@@@@&&BG&@@@@&&&@@@&^.!^...:.:^!7?JJJ5GGGGGGGGGGGGGGGGGGGPPPPPPPPPPPPPPPPPPPPPP //
// ############################BBBBB&@@@@@@&G??#&&&@&&@@#&&&@&&#B55Y?7~~~:^JPGPPGGGGGGGGGGGGGGGGGPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ############################BBBB#@@@@@@@GY!75BB&&&G#@&BBPGBGPGB57!!??!!YPPPGGGGGGGGGGGGGGGGPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ###########################BBBBB#@@@@@@B5?G77P#@&#&@@#G55P555JJ?J!JPPY7PPGGGPGGGGGGGGPGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ############################BBBBB###@@&BGBG~JB@&&@@@@BPGBBG#G?!~7Y7GB?!??PPPPGPPGPGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ###########################BBBBBBBB#@@GY#5:7#@&@@@@@@&5PG5Y?!?^7YJ7YG7?JYY?555GPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ###########################BBBBBBB##@@G7G!?P@&&@&@@@&57JJ7~^^!P57^JJY????J77YJ5PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ###########################BBBBBB&&BG##GYB##&#&&&&@@B~~!7~::^^^::!G77J!JJ??YJ!~!5BGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// #########################BG##BBB#@@@#G#&&&PYYB&#&B#&J!~7~..^~:..::J5JJ~?Y5??!~^^JJYYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// #########################G5&#B#@BJ&@&#&&&Y~~!P#&#PGBJ?P#&Y......:!?J~::!7YPGP?7!^^:~?GBGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ########################&@&#&&#&&B#&&#&#G!~^~JGGBB55GB&@&B!...::::~^:.::!75#&&&BGPY7^~?P##GPPPPPPPPPPPPPPPPPPPPPPPPPPPPP //
// ######################&&@@@&&B#&@&&@@&@&#J~Y5J5PPPPGYJPP7:.:^:.::^^^:.:^~7JP#&###&&??P5YPPPPGGGGPPPPPPPPPPPPPPPPPPPPP //
// ##############&&####&@@&@@@&&&@@@@@@&@@@@P5GJ??PGP55??~:..:^^.::^7J55J~:!?77J#&#B#BGB##GP5Y5PPG@@&&#GY5PPPPPPPPPPP5P555P //
// #########&&####@&&&&@@@&&&&@@@&&@@&G&&&@@#YJ?7?YJJ7!~~....:^::.:^J5PP557~Y5?~7YG&###PYPGG55PPB##&&&##BG5PPPPPPPPP555555P //
// ########&&###&&&@@&@@@@&&&&@@@@@@@BB&B&&&P7J7!?7J7!^^^^^^::::^:^J#&&&&##J!JY5?PG5P#&&B#B&&&&B&&#@@@&&&&##PPPPPPP55555555 //
// ######&&#&@@@@@@@@@@@@@@@@@@@@@@@@@@@&&&J!7J!~!~!!!7~!^^J5Y!7~!YPBGPY#&!.:~7Y?YB#&@@@@@@&&&##&##B#&@@&&&GP#Y5P5555555555 //
// ####&@@@@@@@@@@@@@@@@@@@@@@&@@@@@@@@@@@5~~JP~!!?!??!~...~J!BJ57:~!J&G^J!YGGB&@@@@&&&&#GP###B#5G&@@@@@##Y555P555555 //
// #&@@@@@@@@@@@@@@@@@@@@@@&@&B@@@@@@@@@@@!~!GG~^?B?7~:^!:..7J#@@#JGG?!JPB@Y!?BBB&@@@@&#&&&B#BBB#B#BB#&@@@@@@@ᖳ##GPP55 //
// &@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@?:~BG^^7?!~!::?:.~J?&#P5JG&&&&@B&&7?GG&@@@@&#####PBBPPBG#GB&G&@&&&&&&&PPPP#@&&BGP //
// &&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&#&@@@#!^J&P?7!!::~!7!!7PJ^~!!^~&@@@@@@~JB&@@@@####&##&@@&#B#G5#BB#BGPP5?GG75PG#@@&GG //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@&@@&##G&@&#BY5YJ5!^^:^!!:^J!^7JY#Y!7B&@&@@&@&BP7P&&@@@###B#&&&@@@@#B#GBBBBJ777!^7BJ7755#@@BP //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@&B#&@&J5&@@@&GGP##PJ7!?!^^J!:~?~~Y&#BB#&&&&@@&##B&@@&&&#BB###&&&B&@&BGGBBB#BGPYJ!~P7!7YP#&@@& //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@&B&@&&@@@@&&GG#&##BGB57Y#&5~?PG5?#&#GP##&&#BB#&@&&@@&&BPPG#B#&G75&&#GPBBGBBB5YYPJ?~~^?5###&# //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#YJP@@&&#GPGB&#BPPGBP&&&#Y5GGG##BGGB&BY#&@@@@&&&&@@&BGPBG&&#P#&&&BGGGPG5#~::::^^!^^7Y5?J? //
// @@@@@@@@@@@@@@@@@@@@@@@@@B#@@@@@G7~Y&GGJJB#GBBGYYPBY?YB#PPGGB&&&&###B&@@@@@@@&&&B&@&#GGG#&#B&&BB#GB??P5&Y.....:~~:^:!::: //
// @@@@@@@@@@@@@@@@@@@@@@@&PB@@@&G&@@&BJ~^~B@@@GP#GG#&#GYP&BBGG5&@@@@&@&@@@&&&&&&&&#Y&&&BGPPBBB&@&BGBG!5GG@@5. ...~!:^.:... //
// @@@@@@@@@@@@@@@@@@@@@@@&@@@@@@#7P@@@@#&@@@@@&G&@@@&@&P#&&B#BP#@@@@@@&#@&&#&&&&&&&B&@@&5B55GB#B@@BB##@?Y@@@#^ ..^!~~..... //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#&@@@@@@@&&@@&&&&@@&&@&@@&#&#B#&&&@@@@&&&@@@@&&BPYG@@@@BBBY7?YB@@@&#&#^.Y@@@@7 .7!~^ .... //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&@@@@&&@@@@@&@@@&B#&&&##&@@@@@&&&&##&&&&#B&@@@@@&B#B?!7B&@&#&@!..Y@@@@?.~B#. .... //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#JB@@@@@@&&&#B&&&&&&@@@@@&###B#&&&&&@@@@@@@##B&@&BB&&&&@@&:..P@@@@^:P&. . .: //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#7P&&&@&&###BPGB&@@&&@@@&##&&&&&&&@@@@@@@@@&&&##@@&&&&G@@@#..:&@@&~7~? . .. //
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&G####@#BGGP5JP#&@&&&&&&#&@@#GB##&@@&@@@@@@&&@@@&&@#&BGB@@@5:7&@&BY77: //
// @@@@@@@@@@&G&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&G5PB&@BJ5PPPJ?GB#GB#BGGB&@@#GPGB&@@@##@@@@@@@@@@@&&&GYG5&@@G!B@&B&J?#^ . ! //
// @&&@@@@@@@55&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#B#&@@@@77YPP55##B##B5Y5G&@@&&##&@@@@@@B&@@@&&@@@@@@?!??B&GB&#PB&#&@G... ^& //
// ###@@@@@@@GG@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&@@@@@@&7Y55P#&PJB@&#PYP&@@@@@@@@@@@@@@@&@@@@@@@@@@&&B5~~!~7Y&@##5J#@@@@~...B@ //
// //
// //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
contract GFNIX is ERC1155Creator {
constructor() ERC1155Creator("Golden_FNIX", "GFNIX") {}
}
ERC1155Creator.sol 41 lines
// 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;
}
}
Proxy.sol 86 lines
// 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 {}
}
Address.sol 244 lines
// 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);
}
}
}
StorageSlot.sol 88 lines
// 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
}
}
}
Read Contract
implementation 0x5c60da1b → address
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