|
"content": "\n// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/// @title: The Drowned World\n/// @author: manifold.xyz\n\nimport \"./ERC721Creator.sol\";\n\n//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////\n// //\n// //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXXXXXXNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNKOxolcccccccccccccodkKNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXOdl:cccloxO0XNNWWWNNK0kxlcccccldxOKNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKkocccclxOXWMMMMMMMMMMMMMMMMMMMMWX0kxolcccccldk0NWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXOxoccccokKNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWX0kdl::ccclok0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXOdc::cldkKWMMMMMMMMMMWNKOkxolccOWMMMMMMMMMMMMMMMMMMMMMMMMWXKOxl::cclkXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNOdl:;;cd0XKkolldKWWXKOkdl:,...';;:;:OWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXOoc;cdKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXxc:;;okKWMW0c';o:'ckd,'',;co; ,ONWMMMMMMMMMMMMMMMMMMMWXOxollodOXWMMMMMMMMMMWXx:,oKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNOc;co:,,,c0WMK; cNMWNWWKkk0XWMWl .kMMMMMMMMMMMMMMMMMMMNOo;. .;cc;..:xXMMMMMMMMMMMNOc,oKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMNx:;dKXl .ok,.kWX: cXMMMMMMMMMMMM0' :XMMMMMMMMMMMMMMMMMXx,. .;dONWMMNl ;KMMMNOxKWMMMMWO:,oXMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMXd;:xNMMO. ;KM0',KMKo;;lONMMMMMMMMWo .kMMMMMMMMMMMMMMMMNx' ,dKWMMMMMMMXd:cxNMNO; ,0MMMMMMWk;;OWMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMXo..dNMMMMo .kMMWc.xMMMNOo;;xNMMMMMMK, cNMMMMMMMMMMMMMMM0; 'xNMMNK0KNMMMMMMMMWO:. ,oONMMMN0KWMXc'oNMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMNx,,:'oWMMMWl :NMMWc.xMMMMMMX;.xMMMMMMd..OMMMMMMMMMMMMMMM0, .cXMMMM0:..'cONMMMWKc..;kNMMMMXd'..oNMNk,;OWMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMM0:.lXWl.xWMMMx.cWMMX;.kM0xKXk:.;KMMMMMX: ;XMMMMMMMMMMMMMMMd :XMMMMMMXc .dWMXo. ,kNMMMWKo' .;d0WXl,lKMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMNx,;OWMMX;;XMMMNc'kWNo.cNWx;cl:lkNMMMMMMNo.lNMMMMMMMMMMMMMMMk. '0WMMMN0o, .cxKWO, 'xNMMMNOc..cxOOOkl..cKW0:,dNMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMXl'dNMMMMMx'xMN0OKo:l:;l0XXK0OOOOOOOOOO0000O0XNWWMMMMMMMMMMMMWk, .cdoc' ;OWMNo. cKMMMNx;. :O0OOkkl. .kMMNk;;OWMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMM0:,kWMMMMMMk.'lc;cxxdlclxkkOOOOxooolodxxxxxxxxxxkkkkkkkkOO0KXNWMNx:'..';cokNMMXc .oNMMNx'.'' ..'...',:o0WMMMMXl'dNMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMWk,:0MMMMMMMNo. .:lloxOKKXWMMMMMMWWWNXWMMMMMMMMWNXNWWNXK0OOkkdxkkkxxkxxOXWMMMMMMK:,xNMMK; 'kNK, ;0KKKXNWMMMMMMMMMWx'cXMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMNd'oNMMMMXkoccclxOXWMMMMWWNXXK0OOkkkOOkkkkkOOO00KKXXNWWMMMMMMMXXMWNK0kxdolodk0KNWWNNMMMMXdoKMMX; cNMMMMMMMMMMMMMMMMWO,;KMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMXl'dWMMNOc:clxKWMMNK0kdoc:,'''''''',,;:::::::::cclccccc:::cloddxO0KNWMMMMW0OKOOxdkO00KNMMMMMMMMX; :XMMMWN0xdlccclc:kWM0,,0MMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMXc.xWWKd,;cl0WXOdl;'...';:lodkOOO000OOOOOOOO00000KKKKKK0Okxdolcc:;;;;;:cldxOKWWNWWWNKl:oodk0NWMMW0kXKxdlcc:clodxxddd0WMMK;,OWMMMMMMMMMMMM //\n// MMMMMMMMMMMMK:.oNO:..'''cKd...':odkOOkxolc:,'...... .......',,;:cloddxkO00Okxolc:;c0MMMMMMNk00oxxooodONMMWk,..;OWMMMMMMMMMMMMMMX:'kWMMMMMMMMMMM //\n// MMMMMMMMMMMX: cKx. ,xc;o0k.,xOOko:,.. ..';cloxO00XWMMMMMO;;okKNMN0dodod0WWKklcoOWMMMMMMMMMMMMMXc'kMMMMMMMMMMM //\n// MMMMMMMMMMWo '0x..dd;..,l' ,c,. ..',coxOX0l;,''';lx0NXo;cloONMNKXWMMMMMMMMMMMMMMX;,KMMMMMMMMMM //\n// MMMMMMMMMMX; l0, .'. .cl. .,:ok0Oxl;..';lkKKd;;dOXMMMMMMMMMMMMMMMMMx.oWMMMMMMMMM //\n// MMMMMMMMMMO.'Oo... .dx' .',;:cllolllcc:;,,'... .;cdOOOd:'..;lclkc'lOWMMMMMMMMMMMMMMK;;XMMMMMMMMM //\n// MMMMMMMMMMk.:0; . .xl. .,cdkOXNWMMMMMMMMMMMMMWWWNX0Okdl:;'.. .;lxOOd:'..:, .';dXMMMMMMMMMMMMWl.kMMMMMMMMM //\n// MMMMMMMMMMx.:0, ll .oKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXOxl:'. .,lk0kl' .. :dOWMMMMMMMMMMd.dMMMMMMMMM //\n// MMMMMMMMMMO.'kc .:. ... .oXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKOxo:,. .:dOkc. 'clOWMMMMMMMMd.dMMMMMMMMM //\n// MMMMMMMMMMNo.:d. .kd. .kWMMMMMMMMMMMMMWWNNNNWWWWWMMMMMMMMMMMMMMMMMMMMMMMMMWKOdc,. .;okd, .c,'oKMMMMMMMd.dMMMMMMMMM //\n// MMMMMMMMMMMNl.lo ;c. .xWMMMMMMWNK000KKXKOkO0KKKKKXXXXXKKKKXXXWMMMMMMMMMMMMMMMMMWKx:. .ckx, .'..'OWMMMMMo.xMMMMMMMMM //\n// MMMMMMMMMMMMX;'kl .:. cNMMMMNOk000KKNWMMMMMMMMMMMMMMMWWNXXKKK000O0KNMMMMMMMMMMMMMMMWXxc. .:xl. .kMMMMWc.OMMMMMMMMM //\n// MMMMMMMMMMMMWc.xX; ';,. ;KMMMWk,.',,;:clox0NMMMMMMMMMMMMMMMMWNK0OOkoldO0O0NMMMMMMMMMMMMMMWKc 'l; .oo. lWMMMX:,KMMMMMMMMM //\n// MMMMMMMMMMMMWc.ON: 'ol' '0MMNO:. .oXMMMMMMMMMMMWOc,.........':odxk0NMMMMMMMMMMMMMN: dMX; ;l. ;XMMMO.lWMMMMMMMMM //\n// MMMMMMMMMMMMK,;XKc... 'OMW0: .oOOx; ... .dWMMMMMMMMMMWk:,;okOKXX0Od:',ldxdxXMMMMMMMMMMMMk.cWMd. ::. ,KMMNc'OMMMMMMMMMM //\n// MMMMMMMMMMMMx.cW0xc'. .'. .dWMK; ;0WN0dc',dkOOOXMMMMMMMMMMMMMKl,l0WMMMMMMWKo..:xxdx0NMMMMMMMMMN:,KMK, .cc. ;XMMO.cWMMMMMMMMMM //\n// MMMMMMMMMMMWc dMOxl;' :Kk;. ;XMMNc ,O0l;:cdOOkxxONMOlOWMMMMMMMW0::dKNMMMMWXWMMMK: .xNKxdkXMMMMMMMMd'kMWk. .dd. lNMWl.kMMMMMMMMMMM //\n// MMMMMMMMMMMN: dWkdl;' ,0MWd dMNXX: ;:. .':loc:lONMK;.dWMMMMMMW0O0dc:ccc:,.,oONMNd':0WMXxlkWMMMMMMk.lWMWd .kW00NMMK,:XMMMMMMMMMMM //\n// MMMMMMMMMMMN:.dMxl:.. .kMMk. ,KNodXc ;OXXKOxo',OWMd ,KMMMMMMMMX; .d0Oxol' .;kX0O0XWMMM0cdWMMMMMX;:NMM0' ,KMMMWMMd.dMMMMMMMMMMMM //\n// MMMMMMMMMMMN: dMO;. cNMM0' lNd:0Mk. .'. .c0k:;:lKXdOWWl .OMMMMMMMMNo:ONx,..lO: ;0XWMMMMMMMk:OMMMMMWd;0MMWl lWMMXXMK;,KMMMMMMMMMMMM //\n// MMMMMMMMMMMWl cNX; .OMMMK, .kK:oWMx..dN0l:cxO0KXXWMMMWk. .OMMMMMMMMMMWMNOdood0OlccxXMMMMMMMMMNcoWMMMMM0:xMMMx. .xMMWKKWo.xMMMMMMMMMMMMM //\n// MMMMMMMMMMMMk..kWo .xWMMM0' :Xx,kMMk. dMMMMMMMMMMMMMMMK; lNMMMMMMMMMMMMMMMMMMMMMMMNNMMMMMMMMMMdcXMMMMMX;cNMMO. '0MMNKNk.lNMMMMMMMMMMMMM //\n// MMMMMMMMMMMMNo.'00' :XMMMMx. .. oMo,0MMx. lWMMMMMMMMMMMMMMk. cXMMMMMMMMMMMMMMMMMMMMMMMMXXMMMMMMMMMMdcXMMMMMWc.OMMO. cNMMXXK;,KMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMNl..c. .xWMMNc .ol dMo,0MMx. lWMMMMMMMMMMMMMX; '0MMMMMMMMMMMMMMMMMMMMMMMMMKxXWWMMMMMMMocXMMMMMMd.oWMd. .xMMWKXd.dWMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMNx, cNMMK,.c0O. dMo.xMMx. cWMMMMMMMMMMMWOc. :KMMKxdoo0WMMMMMMMMMMMMMMMWOloONMMMMMNccNMMMMMM0';X0' :XMMKxo';XMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMNx; dMMMk.:NNl :Nk.cXKc :NMMMMMMMMMMMO,ox. .kK: lWXNMMMMMMMMMMMMMMWO,.:kKXXNk.cWMMMMMMNc.kl .OMMNO; .OMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMN:.dMMMk.,K0' .kNo;l, lWMMMMMMMMMMMKcdXo,;cON0dlcoKXkKMMMMMMMMMMMMMMMMNkc:lo:dd.cWMMMMMXk:.cc .xWMWXo. dWMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMd.dMMMx.'0k. cNWNNc '0MMMMMMMMMMMMMWNWWWMMMMMMMMMMWWMMMMMMMMMMMMMMMMMMMMMMNdxo cWMMMMMx.. .. .oWMWXx' ;KMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMx.oMMMk..Ok. ,KMMMk. :NMMMMMMMMMMMMNOlok0KNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKdx: ,KMMXkOo lNMMWk, .dWMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMK,:NMMK,.d0' ,KMMMK,.dWMMMMMMMMMMNx, ..':ooddlcd0NMMMMMMMMMMMMMMMMMMMMMWxox. .xMMk... lNMMMXl'..OMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMWc.OMMWc lNc .OMMMWc'0MMMMMMMMMMWo. ,ldxxxdddlc:'..,dXMMMMMMMMMMMMMMMMMMM0:o: dMNc .oNMMW0lx0;'0MMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMd.dMMMk..Ox. .dMMMMk,dWMMMMMMMMMO. :00OOO0O00KXXX0c. ;0MMMMMMMMMMMMMMMMM0:lc. oW0' .kWMWXxcxN0':NMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMK,;XMMX: c0; ;KMMMNl;KMMMMMMMMWl .. ....,:;. ;XMMMMMMMMMMMMMMMNxl; ,kc ;0WMNKo:kWX:.kMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMWo.xMMM0'.dx. cXMMMXodNMMMMMMMNc dMMMMMMMMMMMMMMW0l. .oNMWNOc:OWX:.dWMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMM0,:XMMMk.'ko. ,kNMMXooXMMMMMMMd.:kkd;. :NMMMMMMMMMMMWO:. .,'.;0WMW0d;.:xk;.cNMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMWx.oWMMWO',kd. .;.':cxO:cXMMMMMMx,dkc,. .',. lWMMMMMMMMMMKc..;. .;ccoONMWXx:. . ;KMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMNo.dWMMM0:'dd. .od. ckllolx0NMO. .xNKl. .;d: .OMMMMMMMMMXd..;c' .,:xNMMN0o' ,0MMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMNc.dNMMMNd':d; :KKo:c;;' .,dd'.'. .kKd;:xOKKx' .xWMMMMMMMMK:.,ooll' .cONMWN0o, .lXMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMk..cXMMMW0:,oo. .ckXMMMK, .,. .,kMMWWMMMNd. lWMMMMMMMMKc,ldk0x' .,dKWMWXOo, ,oKWMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMWd. ,OWMMMNkc:ol' .;OMXXk. .. .dXWMMMWWXX0k:.';x0XWMMMMMMKc;o:;;. 'lONMMXOd:' .;kNMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMWx. :xONMMMNOl:cc' :l'';. .;. ..,:odkkkxl,......,OMMMMMWNo.:l..,oONMMWX0o'. .cOWMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMM0' ,'.,,.,OMMMMMW0olc;,. .. .,oxxoll, ,k0Oxl;...'cd0WMMMWXkl:' .c, .o0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMNl.:kOx:okxk0XWMMMMNOdd:.. .... ..;cd0NMMMNXKkxl,. .Oo.dMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMNO:'cxkxd:.,;ckNMMMMMWKkdl:. .':lxOXWMMMMMXOo;. ':..:clood,'OMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMWk,.,'.. .lxdkXWMMMMMNKOxoc;,'.. ....';:coxOKNMMMMWNNNKOo,..'cdOk;.,';cccd0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMNOoc:'. .,. .cxkKWMMMMMMMMWNX0OkkxddddxxkOO0KXXNWMMMMWNWNXNNXkol;,;:oOKOo;. .cONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMN0o;. ..,cc,..':lxOKNWMMMMMMMMMMMMMMMMMMMMMMMMMNK0xolc,''.. .:xd:. ;kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKko:;;. ..,:cldxkOO0000000OOkxxxdxxc;,. .;oONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0xl:;'.. ... 'okOkO0xd:. .':lodxkKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXKOxoc;'... ,olcc;,'. .;lx0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXXK0Okxdolc;,'......... .kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXKK0000000o. ..;OMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKdoodxO0XWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM //\n// //\n// //\n// //\n//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////\n\n\ncontract LSTGRL is ERC721Creator {\n constructor() ERC721Creator(\"The Drowned World\", \"LSTGRL\") {}\n}\n"
|
|
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
|
