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verify.json
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{
"language": "Solidity",
"sources": {
"src/MoodNft.sol": {
"content":"//SPDX-License-Identifier: MIT\npragma solidity ^0.8.18;\n\nimport {ERC721} from \"@openzeppelin/contrac
ts/token/ERC721/ERC721.sol\";\nimport {Base64} from \"@openzeppelin/contracts/utils/BASE64.sol\";\n\ncontract MoodNft is ERC721 {\n //errors\n error MoodNft__Only
OwnerCanChangeMood();\n\n enum Mood {\n HAPPY,\n SAD\n
}\n\n uint256 private s_tokenCounter;\n string private s_sadSvgImageUri;\n string pr
ivate s_happySvgImageUri;\n\n mapping(uint256 => Mood) private s_tokenIdToMood;\n\n constructor(string memory sadSvgImageUri, string memory happySvgImageUri) ERC7
21(\"Mood NFT\", \"MN\") {\n s_tokenCounter = 0;\n s_sadSvgImageUri = sadSvgImageUri;\n s_happySvgImageUri = happySvgImageUri;\n }\n\n functi
on mintNFT() public {\n uint256 newItemId = s_tokenCounter;\n _safeMint(msg.sender, newItemId);\n s_tokenIdToMood[s_tokenCounter
] = Mood.HAPPY;\n
s_tokenCounter++;\n
}\n\n function flipMood(uint256 tokenID) public {\n //only owner can change mood\n //isOwner has been change to is authori
zed\n if (!_isAuthorized(msg.sender, msg.sender, tokenID)) {\n revert MoodNft__OnlyOwnerCanChangeMood();\n
}\n if (s_tokenIdToMood[token
ID
] == Mood.HAPPY) {\n s_tokenIdToMood[tokenID
] = Mood.SAD;\n
} else {\n s_tokenIdToMood[tokenID
] = Mood.HAPPY;\n
}\n
}\n\n fu
nction _baseURI() internal pure override returns (string memory) {\n return \"data:application/json;base64,\";\n }\n\n function tokenURI(uint256 tokenID) p
ublic view override returns (string memory) {\n string memory imageUri;\n if (s_tokenIdToMood[tokenID
] == Mood.HAPPY) {\n imageUri = s_happySvg
ImageUri;\n
} else {\n imageUri = s_sadSvgImageUri;\n
}\n return string(\n abi.encodePacked(\n _baseURI(),\n
Base64.encode(\n bytes(\n abi.encodePacked(\n '{\"name\": \"',\n
name(),\n '\",\"description\":\"An NFT that reflects the owner mood\", \"attributes\":[{\"trait_type\": \"moodiness\", \"value\": 100}
], \"image\": \"',\n imageUri,\n '\"}'\n )\n )\n )\n
)\n );\n // name {\"name\": \"Mood NFT\"}\n }\n //Getter Functions\n\n function getMoodStatus() external view returns (Mood) {\n re
turn s_tokenIdToMood[
0
];\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/token/ERC721/ERC721.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contr
acts (last updated v5.0.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.20;\n\nimport {IERC721
} from \"./IERC721.sol\";\nimport {IERC721Receiver} from \"./IERC721R
eceiver.sol\";\nimport {IERC721Metadata} from \"./extensions/IERC721Metadata.sol\";\nimport {Context} from \"../../utils/Context.sol\";\nimport {Strings} from \"../../u
tils/Strings.sol\";\nimport {IERC165, ERC165} from \"../../utils/introspection/ERC165.sol\";\nimport {IERC721Errors} from \"../../interfaces/draft-IERC6093.sol\";\n\n/*
*\n * @dev Implementation of https: //eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enu
merable extension, which is available separately as\n * {ERC721Enumerable
}.\n */\nabstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Errors {
\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n mapping(uint256 tokenId => a
ddress) private _owners;\n\n mapping(address owner => uint256) private _balances;\n\n mapping(uint256 tokenId => address) private _tokenApprovals;\n\n mapping(
address owner => mapping(address operator => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to t
he token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n
}\n\n /**\n
* @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n
return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterf
ace(interfaceId);\n
}\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual returns (uint256) {\n
if (owner == address(0)) {\n revert ERC721InvalidOwner(address(0));\n
}\n return _balances[owner
];\n
}\n\n /**\n * @dev See {IERC7
21-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual returns (address) {\n return _requireOwned(tokenId);\n
}\n\n /**\n * @
dev See {IERC721Metadata-name}.\n */\n function name() public view virtual returns (string memory) {\n return _name;\n
}\n\n /**\n * @dev See {I
ERC721Metadata-symbol}.\n */\n function symbol() public view virtual returns (string memory) {\n return _symbol;\n
}\n\n /**\n * @dev See {IERC7
21Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual returns (string memory) {\n _requireOwned(tokenId);\n\n string
memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : \"\";\n }\n\n /**\n * @dev Base URI for
computing {tokenURI
}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be ov
erridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See{IERC721-approve
}.\n */\n function approve(address to, uint256 tokenId) public virtual {\n _approve(to, tokenId, _msgSender());\n
}\n\n /**\n *
@dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual returns (address) {\n _requireOwned(tokenId);\n\n
return _getApproved(tokenId);\n
}\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved)
public virtual {\n _setApprovalForAll(_msgSender(), operator, approved);\n
}\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function is
ApprovedForAll(address owner, address operator) public view virtual returns (bool) {\n return _operatorApprovals[owner
][operator
];\n
}\n\n /**\n * @dev
See {IERC721-transferFrom}.\n */\n function transferFrom(address from, address to, uint256 tokenId) public virtual {\n if (to == address(0)) {\n
revert ERC721InvalidReceiver(address(0));\n
}\n // Setting an \"auth\" arguments enables the `_isAuthorized` check which verifies that the token exists
\n // (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.\n address previousOwner = _update(to, tokenId, _msgSender())
;\n if (previousOwner != from) {\n revert ERC721IncorrectOwner(from, tokenId, previousOwner);\n
}\n
}\n\n /**\n * @dev See {IERC721-s
afeTransferFrom}.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId) public {\n safeTransferFrom(from, to, tokenId, \"\");\n }
\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public vi
rtual {\n transferFrom(from, to, tokenId);\n _checkOnERC721Received(from, to, tokenId, data);\n
}\n\n /**\n * @dev Returns the owner of the `tok
enId`. Does NOT revert if token doesn't exist\n *\n * IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the\n * core ERC
721 logic MUST be matched with the use of {_increaseBalance} to keep balances\n * consistent with ownership. The invariant to preserve is that for any address `a` t
he value returned by\n * `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.\n */\n function _ownerOf(uint256 tokenId)
internal view virtual returns (address) {\n return _owners[tokenId
];\n
}\n\n /**\n * @dev Returns the approved address for `tokenId`. Returns 0 if `to
kenId` is not minted.\n */\n function _getApproved(uint256 tokenId) internal view virtual returns (address) {\n return _tokenApprovals[tokenId
];\n
}\n\
n /**\n * @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in\n * particular (ignoring whether it is owned by `owner`).\n
*\n * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this\n * assumption.\n */\n function _isAuthori
zed(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {\n return\n spender != address(0) &&\n (owner ==
spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);\n
}\n\n /**\n * @dev Checks if `spender` can operate on `tokenId`, assuming
the provided `owner` is the actual owner.\n * Reverts if `spender` does not have approval from the provided `owner` for the given token or for all its assets\n
* the `spender` for the specific `tokenId`.\n *\n * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this\n
* assumption.\n */\n function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {\n if (!_isAuthorized(owner, spend
er, tokenId)) {\n if (owner == address(0)) {\n revert ERC721NonexistentToken(tokenId);\n
} else {\n revert ERC721Ins
ufficientApproval(spender, tokenId);\n
}\n
}\n
}\n\n /**\n * @dev Unsafe write access to the balances, used by extensions that \"mint\" toke
ns using an {ownerOf} override.\n *\n * NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that\n *
a uint256 would ever overflow from increments when these increments are bounded to uint128 values.\n *\n * WARNING: Increasing an account's balance using this f
unction tends to be paired with an override of the\n * {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership\n
* remain consistent with one another.\n */\n function _increaseBalance(address account, uint128 value) internal virtual {\n unchecked {\n _bal
ances[account
] += value;\n
}\n
}\n\n /**\n * @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current
owner\n * (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.\n *\n * The `auth` argument is optional. If the value passed
is non 0, then this function will check that\n * `auth` is either the owner of the token, or approved to operate on the token (by the owner).\n *\n * Emits
a {Transfer} event.\n *\n * NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.\n */\n function _update(address
to, uint256 tokenId, address auth) internal virtual returns (address) {\n address from = _ownerOf(tokenId);\n\n // Perform (optional) operator check\n
if (auth != address(0)) {\n _checkAuthorized(from, auth, tokenId);\n
}\n\n // Execute the update\n if (from != address(0)) {\n
// Clear approval. No need to re-authorize or emit the Approval event\n _approve(address(0), tokenId, address(0), false);\n\n unchecked {\n
_balances[from
] -= 1;\n
}\n
}\n\n if (to != address(0)) {\n unchecked {\n _balances[to
] += 1;\n
}\n
}\n\n _owners[tokenId
] = to;\n\n emit Transfer(from, to, tokenId);\n\n return from;\n
}\n\n /**\n * @dev Mints `tokenId`
and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n *
- `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 token
Id) internal {\n if (to == address(0)) {\n revert ERC721InvalidReceiver(address(0));\n
}\n address previousOwner = _update(to, tokenId,
address(0));\n if (previousOwner != address(0)) {\n revert ERC721InvalidSender(address(0));\n
}\n
}\n\n /**\n * @dev Mints `tokenId`,
transfers it to `to` and checks for `to` acceptance.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart cont
ract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safe
Mint(address to, uint256 tokenId) internal {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_sa
feMint`
], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received
} to contract recipients.\n */\n function _safeMint(
address to, uint256 tokenId, bytes memory data) internal virtual {\n _mint(to, tokenId);\n _checkOnERC721Received(address(0), to, tokenId, data);\n
}\n
\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n * This is an internal function that does not check if the sen
der is authorized to operate on the token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n
function _burn(uint256 tokenId) internal {\n address previousOwner = _update(address(0), tokenId, address(0));\n if (previousOwner == address(0)) {\n
revert ERC721NonexistentToken(tokenId);\n
}\n
}\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}
, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned b
y `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(address from, address to, uint256 tokenId) internal {\n if (to == address(0)
) {\n revert ERC721InvalidReceiver(address(0));\n
}\n address previousOwner = _update(to, tokenId, address(0));\n if (previousOwner == a
ddress(0)) {\n revert ERC721NonexistentToken(tokenId);\n
} else if (previousOwner != from) {\n revert ERC721IncorrectOwner(from, tokenId, p
reviousOwner);\n
}\n
}\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients\n * are aware of th
e ERC721 standard to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n
*\n * This internal function is like {safeTransferFrom} in the sense that it invokes\n * {IERC721Receiver-onERC721Received} on the receiver, and can be used
to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `tokenId` token mus
t exist and be owned by `from`.\n * - `to` cannot be the zero address.\n * - `from` cannot be the zero address.\n * - If `to` refers to a smart contract, it
must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer
(address from, address to, uint256 tokenId) internal {\n _safeTransfer(from, to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeTransfe
r-address-address-uint256-
}[`_safeTransfer`
], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received
} to contract recipient
s.\n */\n function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {\n _transfer(from, to, tokenId);\n
_checkOnERC721Received(from, to, tokenId, data);\n
}\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * The `auth` argument is optional. I
f the value passed is non 0, then this function will check that `auth` is\n * either the owner of the token, or approved to operate on all tokens held by this owner
.\n *\n * Emits an {Approval} event.\n *\n * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.\n *
/\n function _approve(address to, uint256 tokenId, address auth) internal {\n _approve(to, tokenId, auth, true);\n }\n\n /**\n * @dev Variant of `_a
pprove` with an optional flag to enable or disable the {Approval} event. The event is not\n * emitted in the context of transfers.\n */\n function _approve(a
ddress to, uint256 tokenId, address auth, bool emitEvent) internal virtual {\n // Avoid reading the owner unless necessary\n if (emitEvent || auth != addr
ess(0)) {\n address owner = _requireOwned(tokenId);\n\n // We do not use _isAuthorized because single-token approvals should not be able to call a
pprove\n if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {\n revert ERC721InvalidApprover(auth);\n
}\n\n
if (emitEvent) {\n emit Approval(owner, to, tokenId);\n
}\n
}\n\n _tokenApprovals[tokenId
] = to;\n
}\n\n /**\n
* @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Requirements:\n * - operator can't be the address zero.\n *\n * Emits an
{ApprovalForAll} event.\n */\n function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {\n if (operator == address(0)
) {\n revert ERC721InvalidOperator(operator);\n
}\n _operatorApprovals[owner
][operator
] = approved;\n emit ApprovalForAll(owner, operato
r, approved);\n
}\n\n /**\n * @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).\n * Returns the o
wner.\n *\n * Overrides to ownership logic should be done to {_ownerOf}.\n */\n function _requireOwned(uint256 tokenId) internal view returns (address) {
\n address owner = _ownerOf(tokenId);\n if (owner == address(0)) {\n revert ERC721NonexistentToken(tokenId);\n
}\n return owner;\
n
}\n\n /**\n * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target address. This will revert if the\n * recipient doesn't acce
pt the token transfer. The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the give
n token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes opti
onal data to send along with the call\n */\n function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory data) private {\n if
(to.code.length > 0) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n if (retval !=
IERC721Receiver.onERC721Received.selector) {\n revert ERC721InvalidReceiver(to);\n
}\n
} catch (bytes memory reason) {\n
if (reason.length == 0) {\n revert ERC721InvalidReceiver(to);\n
} else {\n /// @solidity memory-safe-
assembly\n assembly {\n revert(add(32, reason), mload(reason))\n
}\n
}\n
}\n
}\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/utils/BASE64.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.2)
(utils/Base64.sol)\n\npragma solidity ^0.8.20;\n\n /**\n * @dev Provides a set of functions to operate with Base64 strings.\n */\nlibrary Base64 {\n /**\n * @dev
Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n *
@dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n
* Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/
base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encod
ing takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes
` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *`
-> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n
assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result po
inter, jump over length\n let resultPtr := add(result,
0x20)\n let dataPtr := data\n let endPtr := add(data, mload(data))\n\n
// In some cases, the last iteration will read bytes after the end of the data. We cache the value, and\n // set it to zero to make sure no dirty bytes are
read in that section.\n let afterPtr := add(endPtr,
0x20)\n let afterCache := mload(afterPtr)\n mstore(afterPtr,
0x00)\n\n
// Run over the input, 3 bytes at a time\n for {\n\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n
dataPtr := add(dataPtr,
3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 byte (24 bits) chunk\n
// 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F to bitmask the least significant 6 bits.\n
// Use this as an index into the lookup table, mload an entire word\n // so the desired character is in the least significant byte, and\n
// mstore8 this least significant byte into the result and continue.\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n
resultPtr := add(resultPtr,
1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n result
Ptr := add(resultPtr,
1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1
) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n
// Reset the value that was cached\n mstore(afterPtr, afterCache)\n\n // When data `bytes` is not exactly 3 bytes long\n //
it is padded with `=` characters at the end\n switch mod(mload(data),
3)\n case 1 {\n mstore8(sub(resultPtr,
1),
0x3d)\n
mstore8(sub(resultPtr,
2),
0x3d)\n
}\n case 2 {\n mstore8(sub(resultPtr,
1),
0x3d)\n
}\n
}\n\n retur
n result;\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last upd
ated v5.0.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.20;\n\nimport {IERC165
} from \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interfa
ce of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */
\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `
tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` ena
bles or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
;\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\
n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(u
int256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n
*\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the
caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implemen
t {IERC721Receiver-onERC721Received}, which is called upon\n * a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(
address from, address to, uint256 tokenId, bytes calldata data) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first t
hat contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` can
not be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`,
it must have been allowed to move this token by either {approve} or\n * {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC
721Receiver-onERC721Received}, which is called upon\n * a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(address
from, address to, uint256 tokenId) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Note that the caller is re
sponsible to confirm that the recipient is capable of receiving ERC721\n * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though t
he caller must\n * understand this adds an external call which potentially creates a reentrancy vulnerability.\n *\n * Requirements:\n *\n * - `from
` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it mu
st be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address from
, address to, uint256 tokenId) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleare
d when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n
* Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\
n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operat
ors can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the addres
s zero.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool approved) external;\n\n /**\n * @dev Ret
urns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId)
external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {set
ApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n
}\n"},"lib/openzeppelin-contracts/contracts/toke
n/ERC721/IERC721Receiver.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721Receiver.sol)\n\npragma
solidity ^0.8.20;\n\n /**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contra
cts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n
* by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is
returned or the interface is not implemented by the recipient, the transfer will be\n * reverted.\n *\n * The selector can be obtained in Solidity with `IER
C721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n b
ytes calldata data\n ) external returns (bytes4);\n
}\n"},"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol":{"content":" // SPDX-Licen
se-Identifier: MIT\n // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.20;\n\nimport {IERC721} from \
"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterfac
e IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\
n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Res
ource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n
}\n"},"lib/openzeppelin-contracts/c
ontracts/utils/Context.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)\n\npragma solidity ^0.8.20;
\n\n /**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available
\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying
for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.
\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n
}\n\n function _msgData() in
ternal view virtual returns (bytes calldata) {\n return msg.data;\n
}\n\n function _contextSuffixLength() internal view virtual returns (uint256) {\n
return 0;\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/utils/Strings.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated
v5.0.0) (utils/Strings.sol)\n\npragma solidity ^0.8.20;\n\nimport {Math
} from \"./math/Math.sol\";\nimport {SignedMath} from \"./math/SignedMath.sol\";\n\n/**\n * @dev
String operations.\n */\nlibrary Strings {\n bytes16 private constant HEX_DIGITS = \"0123456789abcdef\";\n uint8 private constant ADDRESS_LENGTH = 20;\n\n /**\
n * @dev The `value` string doesn't fit in the specified `length`.\n */\n error StringsInsufficientHexLength(uint256 value, uint256 length);\n\n /**\n
* @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n
unchecked {\n uint256 length = Math.log10(value) + 1;\n string memory buffer = new string(length);\n uint256 ptr;\n /// @
solidity memory-safe-assembly\n assembly {\n ptr := add(buffer, add(32, length))\n
}\n while (true) {\n p
tr--;\n /// @solidity memory-safe-assembly\n assembly {\n mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))\n
}\n value /= 10;\n if (value == 0) break;\n
}\n return buffer;\n
}\n
}\n\n /**\n * @dev Converts
a `int256` to its ASCII `string` decimal representation.\n */\n function toStringSigned(int256 value) internal pure returns (string memory) {\n return st
ring.concat(value < 0 ? \"-\" : \"\", toString(SignedMath.abs(value)));\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representa
tion.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, Math.log256(
value) + 1);\n
}\n
}\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function t
oHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n uint256 localValue = value;\n bytes memory buffer = new bytes(2 * leng
th + 2);\n buffer[
0
] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = HEX_DIGITS[localValue
& 0xf
];\n localValue >>= 4;\n
}\n if (localValue != 0) {\n revert StringsInsufficientHexLength(value, length);\n
}\n r
eturn string(buffer);\n
}\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal\n * repre
sentation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
\n
}\n\n /**\n * @dev Returns true if the two strings are equal.\n */\n function equal(string memory a, string memory b) internal pure returns (bool) {
\n return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/utils/introspecti
on/ERC165.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.20;
\n\nimport {IERC165
} from \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit f
rom this contract and override {supportsInterface
} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function su
pportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface
(interfaceId);\n *
}\n * ```\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface
(bytes4 interfaceId) public view virtual returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n
}\n
}\n"},"lib/openzeppelin-contracts/contracts/
interfaces/draft-IERC6093.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)\npragma soli
dity ^0.8.20;\n\n /**\n * @dev Standard ERC20 Errors\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.\n */\ninterfa
ce IERC20Errors {\n /**\n * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n * @param sender Address whose tokens
are being transferred.\n * @param balance Current balance for the interacting account.\n * @param needed Minimum amount required to perform a transfer.\n *
/\n error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);\n\n /**\n * @dev Indicates a failure with the token `sender`. Used in tra
nsfers.\n * @param sender Address whose tokens are being transferred.\n */\n error ERC20InvalidSender(address sender);\n\n /**\n * @dev Indicates a fa
ilure with the token `receiver`. Used in transfers.\n * @param receiver Address to which tokens are being transferred.\n */\n error ERC20InvalidReceiver(addr
ess receiver);\n\n /**\n * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n * @param spender Address that may be allowed to op
erate on tokens without being their owner.\n * @param allowance Amount of tokens a `spender` is allowed to operate with.\n * @param needed Minimum amount requir
ed to perform a transfer.\n */\n error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);\n\n /**\n * @dev Indicates a failur
e with the `approver` of a token to be approved. Used in approvals.\n * @param approver Address initiating an approval operation.\n */\n error ERC20InvalidAp
prover(address approver);\n\n /**\n * @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n * @param spender Address that may be a
llowed to operate on tokens without being their owner.\n */\n error ERC20InvalidSpender(address spender);\n
}\n\n /**\n * @dev Standard ERC721 Errors\n * Interface
of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.\n */\ninterface IERC721Errors {\n /**\n * @dev Indicates that an addre
ss can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n * Used in balance queries.\n * @param owner Address of the current owner of a
token.\n */\n error ERC721InvalidOwner(address owner);\n\n /**\n * @dev Indicates a `tokenId` whose `owner` is the zero address.\n * @param tokenId Id
entifier number of a token.\n */\n error ERC721NonexistentToken(uint256 tokenId);\n\n /**\n * @dev Indicates an error related to the ownership over a part
icular token. Used in transfers.\n * @param sender Address whose tokens are being transferred.\n * @param tokenId Identifier number of a token.\n * @param o
wner Address of the current owner of a token.\n */\n error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);\n\n /**\n * @dev Indicate
s a failure with the token `sender`. Used in transfers.\n * @param sender Address whose tokens are being transferred.\n */\n error ERC721InvalidSender(addres
s sender);\n\n /**\n * @dev Indicates a failure with the token `receiver`. Used in transfers.\n * @param receiver Address to which tokens are being transferr
ed.\n */\n error ERC721InvalidReceiver(address receiver);\n\n /**\n * @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n *
@param operator Address that may be allowed to operate on tokens without being their owner.\n * @param tokenId Identifier number of a token.\n */\n error ERC
721InsufficientApproval(address operator, uint256 tokenId);\n\n /**\n * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals
.\n * @param approver Address initiating an approval operation.\n */\n error ERC721InvalidApprover(address approver);\n\n /**\n * @dev Indicates a fai
lure with the `operator` to be approved. Used in approvals.\n * @param operator Address that may be allowed to operate on tokens without being their owner.\n */
\n error ERC721InvalidOperator(address operator);\n
}\n\n /**\n * @dev Standard ERC1155 Errors\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] c
ustom errors for ERC1155 tokens.\n */\ninterface IERC1155Errors {\n /**\n * @dev Indicates an error related to the current `balance` of a `sender`. Used in trans
fers.\n * @param sender Address whose tokens are being transferred.\n * @param balance Current balance for the interacting account.\n * @param needed Minimu
m amount required to perform a transfer.\n * @param tokenId Identifier number of a token.\n */\n error ERC1155InsufficientBalance(address sender, uint256 bal
ance, uint256 needed, uint256 tokenId);\n\n /**\n * @dev Indicates a failure with the token `sender`. Used in transfers.\n * @param sender Address whose toke
ns are being transferred.\n */\n error ERC1155InvalidSender(address sender);\n\n /**\n * @dev Indicates a failure with the token `receiver`. Used in trans
fers.\n * @param receiver Address to which tokens are being transferred.\n */\n error ERC1155InvalidReceiver(address receiver);\n\n /**\n * @dev Indic
ates a failure with the `operator`’s approval. Used in transfers.\n * @param operator Address that may be allowed to operate on tokens without being their owner.\n
* @param owner Address of the current owner of a token.\n */\n error ERC1155MissingApprovalForAll(address operator, address owner);\n\n /**\n * @dev I
ndicates a failure with the `approver` of a token to be approved. Used in approvals.\n * @param approver Address initiating an approval operation.\n */\n err
or ERC1155InvalidApprover(address approver);\n\n /**\n * @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n * @param operator
Address that may be allowed to operate on tokens without being their owner.\n */\n error ERC1155InvalidOperator(address operator);\n\n /**\n * @dev Indica
tes an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n * Used in batch transfers.\n * @param idsLength Length of the array
of token identifiers\n * @param valuesLength Length of the array of token amounts\n */\n error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLen
gth);\n
}\n"},"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated
v5.0.0) (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.20;\n\n /**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org
/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implement
ation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the co
rresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n
* This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n
}\n"},"lib/openzeppel
in-contracts/contracts/utils/math/Math.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)\n\npragma
solidity ^0.8.20;\n\n /**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n /**\n * @dev Muldiv operation overflow.\n
*/\n error MathOverflowedMulDiv();\n\n enum Rounding {\n Floor, // Toward negative infinity\n Ceil, // Toward positive infinity\n Trunc, //
Toward zero\n Expand // Away from zero\n }\n\n /**\n * @dev Returns the addition of two unsigned integers, with an overflow flag.\n */\n functio
n tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n if (c < a) return (false,
0);\n
return (true, c);\n
}\n
}\n\n /**\n * @dev Returns the subtraction of two unsigned integers, with an overflow flag.\n */\n function
trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false,
0);\n return (true, a - b);\
n
}\n
}\n\n /**\n * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\n */\n function tryMul(uint256 a, uint256 b
) internal pure returns (bool, uint256) {\n unchecked {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n
// benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) return (true, 0
);\n uint256 c = a * b;\n if (c / a != b) return (false,
0);\n return (true, c);\n
}\n
}\n\n /**\n * @dev Returns the
division of two unsigned integers, with a division by zero flag.\n */\n function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n un
checked {\n if (b == 0) return (false,
0);\n return (true, a / b);\n
}\n
}\n\n /**\n * @dev Returns the remainder of dividing two
unsigned integers, with a division by zero flag.\n */\n function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n
if (b == 0) return (false,
0);\n return (true, a % b);\n
}\n
}\n\n /**\n * @dev Returns the largest of two numbers.\n */\n fu
nction max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n
}\n\n /**\n * @dev Returns the smallest of two numbers.\n
*/\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n
}\n\n /**\n * @dev Returns the average of tw
o numbers. The result is rounded towards\n * zero.\n */\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b) / 2 ca
n overflow.\n return (a & b) + (a ^ b) / 2;\n
}\n\n /**\n * @dev Returns the ceiling of the division of two numbers.\n *\n * This differs from
standard division with `/` in that it rounds towards infinity instead\n * of rounding towards zero.\n */\n function ceilDiv(uint256 a, uint256 b) internal pu
re returns (uint256) {\n if (b == 0) {\n // Guarantee the same behavior as in a regular Solidity division.\n return a / b;\n }\n\n
// (a + b - 1) / b can overflow on addition, so we distribute.\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n /**\n * @notice Calculates floor(x
* y / denominator) with full precision. Throws if result overflows a uint256 or\n * denominator == 0.\n * @dev Original credit to Remco Bloemen under MIT licens
e (https: //xn--2-umb.com/21/muldiv) with further edits by\n * Uniswap Labs also under MIT license.\n */\n function mulDiv(uint256 x, uint256 y, uint256 denom
inator) internal pure returns (uint256 result) {\n unchecked {\n // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^25
6 - 1, then use\n // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n // variables such that
product = prod1 * 2^256 + prod0.\n uint256 prod0 = x * y; // Least significant 256 bits of the product\n uint256 prod1; // Most significant 256 b
its of the product\n assembly {\n let mm := mulmod(x, y, not(0))\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n
}\n
\n // Handle non-overflow cases, 256 by 256 division.\n if (prod1 == 0) {\n // Solidity will revert if denominator == 0, unlike the
div opcode on its own.\n // The surrounding unchecked block does not change this fact.\n // See https://docs.soliditylang.org/en/latest/c
ontrol-structures.html#checked-or-unchecked-arithmetic.\n return prod0 / denominator;\n
}\n\n // Make sure the result is less than
2^256. Also prevents denominator == 0.\n if (denominator <= prod1) {\n revert MathOverflowedMulDiv();\n
}\n\n //////////
/////////////////////////////////////\n // 512 by 256 division.\n ///////////////////////////////////////////////\n\n // Make division
exact by subtracting the remainder from [prod1 prod0
].\n uint256 remainder;\n assembly {\n // Compute remainder using mulmod.\n
remainder := mulmod(x, y, denominator)\n\n // Subtract 256 bit number from 512 bit number.\n prod1 := sub(prod1, gt(remainder,
prod0))\n prod0 := sub(prod0, remainder)\n
}\n\n // Factor powers of two out of denominator and compute largest power of two divis
or of denominator.\n // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.\n\n uint256 twos = denominator & (0 - denominator);\n
assembly {\n // Divide denominator by twos.\n denominator := div(denominator, twos)\n\n // Divide [prod1 prod0] by two
s.\n prod0 := div(prod0, twos)\n\n // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n twos
:= add(div(sub(0, twos), twos),
1)\n
}\n\n // Shift in bits from prod1 into prod0.\n prod0 |= prod1 * twos;\n\n // Invert de
nominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n // that denominator * inv = 1 mod 2^256. Compute the invers
e by starting with a seed that is correct for\n // four bits. That is, denominator * inv = 1 mod 2^4.\n uint256 inverse = (3 * denominator) ^ 2;\n
\n // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also\n // works in modular arithmetic, dou
bling the correct bits in each step.\n inverse *= 2 - denominator * inverse; // inverse mod 2^8\n inverse *= 2 - denominator * inverse; // inverse
mod 2^16\n inverse *= 2 - denominator * inverse; // inverse mod 2^32\n inverse *= 2 - denominator * inverse; // inverse mod 2^64\n inv
erse *= 2 - denominator * inverse; // inverse mod 2^128\n inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n // Because the division i
s now exact we can divide by multiplying with the modular inverse of denominator.\n // This will give us the correct result modulo 2^256. Since the precondit
ions guarantee that the outcome is\n // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n
// is no longer required.\n result = prod0 * inverse;\n return result;\n }\n }\n\n /**\n * @notice Calculates x * y / denominat
or with full precision, following the selected rounding direction.\n */\n function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal
pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {\n r
esult += 1;\n
}\n return result;\n
}\n\n /**\n * @dev Returns the square root of a number. If the number is not a perfect square, the value is r
ounded\n * towards zero.\n *\n * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n */\n function sqrt(uint256 a) internal pure
returns (uint256) {\n if (a == 0) {\n return 0;\n
}\n\n // For our first guess, we get the biggest power of 2 which is smaller than the
square root of the target.\n //\n // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n /
/ `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n //\n // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
\n // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n //\n // Consequently, `2**(lo
g2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n uint256 result = 1 << (log2(a) >> 1);\n\n // At this point `result`
is an estimation with one bit of precision. We know the true value is a uint128,\n // since it is the square root of a uint256. Newton's method converges quadrat
ically (precision doubles at\n // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n // into the ex
pected uint128 result.\n unchecked {\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (r
esult + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result
) >> 1;\n result = (result + a / result) >> 1;\n return min(result, a / result);\n
}\n
}\n\n /**\n * @notice Calculates sqrt(a),
following the selected rounding direction.\n */\n function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n
uint256 result = sqrt(a);\n return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);\n
}\n
}\n\n /**\n * @dev Return th
e log in base 2 of a positive value rounded towards zero.\n * Returns 0 if given 0.\n */\n function log2(uint256 value) internal pure returns (uint256) {\n
uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 128;\n
}\n
if (value >> 64 > 0) {\n value >>= 64;\n result += 64;\n
}\n if (value >> 32 > 0) {\n value >
>= 32;\n result += 32;\n
}\n if (value >> 16 > 0) {\n value >>= 16;\n result += 16;\n
}\n
if (value >> 8 > 0) {\n value >>= 8;\n result += 8;\n
}\n if (value >> 4 > 0) {\n value >>
= 4;\n result += 4;\n
}\n if (value >> 2 > 0) {\n value >>= 2;\n result += 2;\n
}\n
if (value >> 1 > 0) {\n result += 1;\n
}\n
}\n return result;\n
}\n\n /**\n * @dev Return the log in base 2, foll
owing the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log2(uint256 value, Rounding rounding) internal pure re
turns (uint256) {\n unchecked {\n uint256 result = log2(value);\n return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);\n
}\n
}\n\n /**\n * @dev Return the log in base 10 of a positive value rounded towards zero.\n * Returns 0 if given 0.\n */\n function l
og10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >= 10 ** 64) {\n value /=
10 ** 64;\n result += 64;\n
}\n if (value >= 10 ** 32) {\n value /= 10 ** 32;\n result += 32;\n
}\n if (value >= 10 ** 16) {\n value /= 10 ** 16;\n result += 16;\n
}\n if (value >= 10 ** 8) {\n
value /= 10 ** 8;\n result += 8;\n
}\n if (value >= 10 ** 4) {\n value /= 10 ** 4;\n re
sult += 4;\n
}\n if (value >= 10 ** 2) {\n value /= 10 ** 2;\n result += 2;\n
}\n if (value >=
10 ** 1) {\n result += 1;\n
}\n
}\n return result;\n
}\n\n /**\n * @dev Return the log in base 10, following the sele
cted rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log10(uint256 value, Rounding rounding) internal pure returns (uint25
6) {\n unchecked {\n uint256 result = log10(value);\n return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);\n
}\n
}\n\n /**\n * @dev Return the log in base 256 of a positive value rounded towards zero.\n * Returns 0 if given 0.\n *\n * Adding one to the
result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n */\n function log256(uint256 value) internal pure returns (uint256
) {\n uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 16;\n
}
\n if (value >> 64 > 0) {\n value >>= 64;\n result += 8;\n
}\n if (value >> 32 > 0) {\n va
lue >>= 32;\n result += 4;\n
}\n if (value >> 16 > 0) {\n value >>= 16;\n result += 2;\n
}
\n if (value >> 8 > 0) {\n result += 1;\n
}\n
}\n return result;\n
}\n\n /**\n * @dev Return the log in bas
e 256, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log256(uint256 value, Rounding rounding) int
ernal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n return result + (unsignedRoundsUp(rounding) && 1 << (resul
t << 3) < value ? 1 : 0);\n
}\n
}\n\n /**\n * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.\n */\n
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {\n return uint8(rounding) % 2 == 1;\n
}\n
}\n"},"lib/openzeppelin-contracts/cont
racts/utils/math/SignedMath.sol":{"content":" // SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)\n\npragma soli
dity ^0.8.20;\n\n /**\n * @dev Standard signed math utilities missing in the Solidity language.\n */\nlibrary SignedMath {\n /**\n * @dev Returns the largest of t
wo signed numbers.\n */\n function max(int256 a, int256 b) internal pure returns (int256) {\n return a > b ? a : b;\n
}\n\n /**\n * @dev Returns
the smallest of two signed numbers.\n */\n function min(int256 a, int256 b) internal pure returns (int256) {\n return a < b ? a : b;\n
}\n\n /**\n
* @dev Returns the average of two signed numbers without overflow.\n * The result is rounded towards zero.\n */\n function average(int256 a, int256 b) in
ternal pure returns (int256) {\n // Formula from the book \"Hacker's Delight\"\n int256 x = (a & b) + ((a ^ b) >> 1);\n return x + (int256(uint256(
x) >> 255) & (a ^ b));\n
}\n\n /**\n * @dev Returns the absolute unsigned value of a signed value.\n */\n function abs(int256 n) internal pure returns
(uint256) {\n unchecked {\n // must be unchecked in order to support `n = type(int256).min`\n return uint256(n >= 0 ? n : -n);\n }\n
}\n
}\n"}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/
","ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","f
oundry-devops/=lib/foundry-devops/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"useLiteralContent":false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"abi",
"evm.bytecode",
"evm.deployedBytecode",
"evm.methodIdentifiers",
"metadata"
]
}
},
"evmVersion":"p
aris","viaIR":false,"libraries":{}}}