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TokenTracker
Latest 25 from a total of 30 transactions
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| Set Approval For... | 22693693 | 155 days ago | IN | 0 ETH | 0.00007424 | ||||
| Set Approval For... | 22677503 | 157 days ago | IN | 0 ETH | 0.00007918 | ||||
| Set Approval For... | 22677465 | 157 days ago | IN | 0 ETH | 0.00016801 | ||||
| Safe Transfer Fr... | 18998265 | 672 days ago | IN | 0 ETH | 0.00095962 | ||||
| Safe Transfer Fr... | 18597932 | 728 days ago | IN | 0 ETH | 0.0008077 | ||||
| Mint And Approve | 18582827 | 730 days ago | IN | 0 ETH | 0.00413772 | ||||
| Mint And Approve | 18582821 | 730 days ago | IN | 0 ETH | 0.00432342 | ||||
| Mint And Approve | 18582811 | 730 days ago | IN | 0 ETH | 0.00419306 | ||||
| Mint And Approve | 18582804 | 730 days ago | IN | 0 ETH | 0.00418861 | ||||
| Mint And Approve | 18427240 | 752 days ago | IN | 0 ETH | 0.00284804 | ||||
| Mint And Approve | 18427232 | 752 days ago | IN | 0 ETH | 0.00279713 | ||||
| Mint And Approve | 18427224 | 752 days ago | IN | 0 ETH | 0.00266974 | ||||
| Mint And Approve | 18427217 | 752 days ago | IN | 0 ETH | 0.00295911 | ||||
| Safe Transfer Fr... | 18425311 | 752 days ago | IN | 0 ETH | 0.00069094 | ||||
| Mint And Approve | 18327439 | 766 days ago | IN | 0 ETH | 0.00151902 | ||||
| Mint And Approve | 18327433 | 766 days ago | IN | 0 ETH | 0.00133226 | ||||
| Mint And Approve | 18327425 | 766 days ago | IN | 0 ETH | 0.00128242 | ||||
| Mint And Approve | 18327404 | 766 days ago | IN | 0 ETH | 0.0015057 | ||||
| Safe Transfer Fr... | 18277366 | 773 days ago | IN | 0 ETH | 0.00075973 | ||||
| Mint And Approve | 18277230 | 773 days ago | IN | 0 ETH | 0.0013956 | ||||
| Mint And Approve | 18277058 | 773 days ago | IN | 0 ETH | 0.00117716 | ||||
| Mint And Approve | 18277050 | 773 days ago | IN | 0 ETH | 0.0011751 | ||||
| Mint And Approve | 18277040 | 773 days ago | IN | 0 ETH | 0.00116141 | ||||
| Mint And Approve | 18277033 | 773 days ago | IN | 0 ETH | 0.00112762 | ||||
| Mint And Approve | 18277022 | 773 days ago | IN | 0 ETH | 0.00126598 |
Latest 1 internal transaction
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| 0x3d602d80 | 18240431 | 778 days ago | Contract Creation | 0 ETH |
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Minimal Proxy Contract for 0x0532fd6e1109756be1503dabe7194b70df0257a7
Contract Name:
NFTCollection
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 1337000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "../interfaces/internal/INFTCollectionInitializer.sol";
import "../libraries/AddressLibrary.sol";
import "../mixins/collections/CollectionRoyalties.sol";
import "../mixins/collections/NFTCollectionType.sol";
import "../mixins/collections/SequentialMintCollection.sol";
import "../mixins/collections/TokenLimitedCollection.sol";
import "../mixins/shared/ContractFactory.sol";
error NFTCollection_Max_Token_Id_Has_Already_Been_Minted(uint256 maxTokenId);
error NFTCollection_Token_CID_Already_Minted();
error NFTCollection_Token_CID_Required();
error NFTCollection_Token_Creator_Payment_Address_Required();
/**
* @title A collection of 1:1 NFTs by a single creator.
* @notice A 10% royalty to the creator is included which may be split with collaborators on a per-NFT basis.
* @author batu-inal & HardlyDifficult
*/
contract NFTCollection is
INFTCollectionInitializer,
ContractFactory,
Initializable,
ERC165Upgradeable,
ERC721Upgradeable,
ERC721BurnableUpgradeable,
NFTCollectionType,
SequentialMintCollection,
TokenLimitedCollection,
CollectionRoyalties
{
using AddressLibrary for address;
using AddressUpgradeable for address;
/**
* @notice The baseURI to use for the tokenURI, if undefined then `ipfs://` is used.
*/
string private baseURI_;
/**
* @notice Stores hashes minted to prevent duplicates.
* @dev 0 means not yet minted, set to 1 when minted.
* For why using uint is better than using bool here:
* github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.3/contracts/security/ReentrancyGuard.sol#L23-L27
*/
mapping(string => uint256) private cidToMinted;
/**
* @dev Stores an optional alternate address to receive creator revenue and royalty payments.
* The target address may be a contract which could split or escrow payments.
*/
mapping(uint256 => address payable) private tokenIdToCreatorPaymentAddress;
/**
* @dev Stores a CID for each NFT.
*/
mapping(uint256 => string) private _tokenCIDs;
/**
* @notice Emitted when the owner changes the base URI to be used for NFTs in this collection.
* @param baseURI The new base URI to use.
*/
event BaseURIUpdated(string baseURI);
/**
* @notice Emitted when a new NFT is minted.
* @param creator The address of the collection owner at this time this NFT was minted.
* @param tokenId The tokenId of the newly minted NFT.
* @param indexedTokenCID The CID of the newly minted NFT, indexed to enable watching for mint events by the tokenCID.
* @param tokenCID The actual CID of the newly minted NFT.
*/
event Minted(address indexed creator, uint256 indexed tokenId, string indexed indexedTokenCID, string tokenCID);
/**
* @notice Emitted when the payment address for creator royalties is set.
* @param fromPaymentAddress The original address used for royalty payments.
* @param toPaymentAddress The new address used for royalty payments.
* @param tokenId The NFT which had the royalty payment address updated.
*/
event TokenCreatorPaymentAddressSet(
address indexed fromPaymentAddress,
address indexed toPaymentAddress,
uint256 indexed tokenId
);
/**
* @notice Initialize the template's immutable variables.
* @param _contractFactory The factory which will be used to create collection contracts.
*/
constructor(address _contractFactory) ContractFactory(_contractFactory) NFTCollectionType(NFT_COLLECTION_TYPE) {
// The template will be initialized by the factory when it's registered for use.
}
/**
* @notice Called by the contract factory on creation.
* @param _creator The creator of this collection.
* @param _name The collection's `name`.
* @param _symbol The collection's `symbol`.
*/
function initialize(
address payable _creator,
string calldata _name,
string calldata _symbol
) external initializer onlyContractFactory {
__ERC721_init(_name, _symbol);
_initializeSequentialMintCollection(_creator);
// maxTokenId defaults to 0 but may be assigned later on.
}
/**
* @notice Mint an NFT defined by its metadata path.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mint(string calldata tokenCID) external returns (uint256 tokenId) {
tokenId = _mint(tokenCID);
}
/**
* @notice Mint an NFT defined by its metadata path and approves the provided operator address.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintAndApprove(string calldata tokenCID, address operator) external returns (uint256 tokenId) {
tokenId = _mint(tokenCID);
setApprovalForAll(operator, true);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param tokenCreatorPaymentAddress The royalty recipient address to use for this NFT.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentAddress(
string calldata tokenCID,
address payable tokenCreatorPaymentAddress
) public returns (uint256 tokenId) {
if (tokenCreatorPaymentAddress == address(0)) {
revert NFTCollection_Token_Creator_Payment_Address_Required();
}
tokenId = _mint(tokenCID);
tokenIdToCreatorPaymentAddress[tokenId] = tokenCreatorPaymentAddress;
emit TokenCreatorPaymentAddressSet(address(0), tokenCreatorPaymentAddress, tokenId);
}
/**
* @notice Mint an NFT defined by its metadata path and approves the provided operator address.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param tokenCreatorPaymentAddress The royalty recipient address to use for this NFT.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentAddressAndApprove(
string calldata tokenCID,
address payable tokenCreatorPaymentAddress,
address operator
) external returns (uint256 tokenId) {
tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
setApprovalForAll(operator, true);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address
* which is defined by a contract call, typically a proxy contract address representing the payment terms.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param paymentAddressFactory The contract to call which will return the address to use for payments.
* @param paymentAddressCall The call details to send to the factory provided.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentFactory(
string calldata tokenCID,
address paymentAddressFactory,
bytes calldata paymentAddressCall
) public returns (uint256 tokenId) {
address payable tokenCreatorPaymentAddress = paymentAddressFactory.callAndReturnContractAddress(paymentAddressCall);
tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address
* which is defined by a contract call, typically a proxy contract address representing the payment terms.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param paymentAddressFactory The contract to call which will return the address to use for payments.
* @param paymentAddressCall The call details to send to the factory provided.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentFactoryAndApprove(
string calldata tokenCID,
address paymentAddressFactory,
bytes calldata paymentAddressCall,
address operator
) external returns (uint256 tokenId) {
tokenId = mintWithCreatorPaymentFactory(tokenCID, paymentAddressFactory, paymentAddressCall);
setApprovalForAll(operator, true);
}
/**
* @notice Allows the collection creator to destroy this contract only if
* no NFTs have been minted yet or the minted NFTs have been burned.
* @dev Once destructed, a new collection could be deployed to this address (although that's discouraged).
*/
function selfDestruct() external onlyOwner {
_selfDestruct();
}
/**
* @notice Allows the owner to assign a baseURI to use for the tokenURI instead of the default `ipfs://`.
* @param baseURIOverride The new base URI to use for all NFTs in this collection.
*/
function updateBaseURI(string calldata baseURIOverride) external onlyOwner {
baseURI_ = baseURIOverride;
emit BaseURIUpdated(baseURIOverride);
}
/**
* @notice Allows the owner to set a max tokenID.
* This provides a guarantee to collectors about the limit of this collection contract, if applicable.
* @dev Once this value has been set, it may be decreased but can never be increased.
* This max may be more than the final `totalSupply` if 1 or more tokens were burned.
* @param _maxTokenId The max tokenId to set, all NFTs must have a tokenId less than or equal to this value.
*/
function updateMaxTokenId(uint32 _maxTokenId) external onlyOwner {
_updateMaxTokenId(_maxTokenId);
}
/**
* @inheritdoc ERC721Upgradeable
* @dev The function here asserts `onlyOwner` while the super confirms ownership.
*/
function _burn(uint256 tokenId) internal override(ERC721Upgradeable, SequentialMintCollection) onlyOwner {
delete cidToMinted[_tokenCIDs[tokenId]];
delete tokenIdToCreatorPaymentAddress[tokenId];
delete _tokenCIDs[tokenId];
super._burn(tokenId);
}
function _mint(string calldata tokenCID) private onlyOwner returns (uint256 tokenId) {
if (bytes(tokenCID).length == 0) {
revert NFTCollection_Token_CID_Required();
}
if (cidToMinted[tokenCID] != 0) {
revert NFTCollection_Token_CID_Already_Minted();
}
// If the mint will exceed uint32, the addition here will overflow. But it's not realistic to mint that many tokens.
tokenId = ++latestTokenId;
if (maxTokenId != 0 && tokenId > maxTokenId) {
revert NFTCollection_Max_Token_Id_Has_Already_Been_Minted(maxTokenId);
}
cidToMinted[tokenCID] = 1;
_tokenCIDs[tokenId] = tokenCID;
_safeMint(msg.sender, tokenId);
emit Minted(msg.sender, tokenId, tokenCID, tokenCID);
}
/**
* @notice The base URI used for all NFTs in this collection.
* @dev The `tokenCID` is appended to this to obtain an NFT's `tokenURI`.
* e.g. The URI for a token with the `tokenCID`: "foo" and `baseURI`: "ipfs://" is "ipfs://foo".
* @return uri The base URI used by this collection.
*/
function baseURI() external view returns (string memory uri) {
uri = _baseURI();
}
/**
* @notice Checks if the creator has already minted a given NFT using this collection contract.
* @param tokenCID The CID to check for.
* @return hasBeenMinted True if the creator has already minted an NFT with this CID.
*/
function getHasMintedCID(string calldata tokenCID) external view returns (bool hasBeenMinted) {
hasBeenMinted = cidToMinted[tokenCID] != 0;
}
/**
* @inheritdoc CollectionRoyalties
*/
function getTokenCreatorPaymentAddress(
uint256 tokenId
) public view override returns (address payable creatorPaymentAddress) {
creatorPaymentAddress = tokenIdToCreatorPaymentAddress[tokenId];
if (creatorPaymentAddress == address(0)) {
creatorPaymentAddress = owner;
}
}
/**
* @inheritdoc IERC165Upgradeable
*/
function supportsInterface(
bytes4 interfaceId
)
public
view
override(ERC165Upgradeable, ERC721Upgradeable, NFTCollectionType, CollectionRoyalties)
returns (bool interfaceSupported)
{
interfaceSupported = super.supportsInterface(interfaceId);
}
/**
* @inheritdoc IERC721MetadataUpgradeable
*/
function tokenURI(uint256 tokenId) public view override returns (string memory uri) {
_requireMinted(tokenId);
uri = string.concat(_baseURI(), _tokenCIDs[tokenId]);
}
function _baseURI() internal view override returns (string memory uri) {
uri = baseURI_;
if (bytes(uri).length == 0) {
uri = "ipfs://";
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: setting the version to 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized != type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
using AddressUpgradeable for address;
using StringsUpgradeable for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
__ERC721_init_unchained(name_, symbol_);
}
function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
return
interfaceId == type(IERC721Upgradeable).interfaceId ||
interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: address zero is not a valid owner");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _ownerOf(tokenId);
require(owner != address(0), "ERC721: invalid token ID");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
_requireMinted(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721Upgradeable.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not token owner or approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
_requireMinted(tokenId);
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_safeTransfer(from, to, tokenId, data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
return _owners[tokenId];
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _ownerOf(tokenId) != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
address owner = ERC721Upgradeable.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId, 1);
// Check that tokenId was not minted by `_beforeTokenTransfer` hook
require(!_exists(tokenId), "ERC721: token already minted");
unchecked {
// Will not overflow unless all 2**256 token ids are minted to the same owner.
// Given that tokens are minted one by one, it is impossible in practice that
// this ever happens. Might change if we allow batch minting.
// The ERC fails to describe this case.
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId, 1);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721Upgradeable.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId, 1);
// Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
owner = ERC721Upgradeable.ownerOf(tokenId);
// Clear approvals
delete _tokenApprovals[tokenId];
unchecked {
// Cannot overflow, as that would require more tokens to be burned/transferred
// out than the owner initially received through minting and transferring in.
_balances[owner] -= 1;
}
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId, 1);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId, 1);
// Check that tokenId was not transferred by `_beforeTokenTransfer` hook
require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
// Clear approvals from the previous owner
delete _tokenApprovals[tokenId];
unchecked {
// `_balances[from]` cannot overflow for the same reason as described in `_burn`:
// `from`'s balance is the number of token held, which is at least one before the current
// transfer.
// `_balances[to]` could overflow in the conditions described in `_mint`. That would require
// all 2**256 token ids to be minted, which in practice is impossible.
_balances[from] -= 1;
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId, 1);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` has not been minted yet.
*/
function _requireMinted(uint256 tokenId) internal view virtual {
require(_exists(tokenId), "ERC721: invalid token ID");
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory data
) private returns (bool) {
if (to.isContract()) {
try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
* - When `from` is zero, the tokens will be minted for `to`.
* - When `to` is zero, ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}
/**
* @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
* - When `from` is zero, the tokens were minted for `to`.
* - When `to` is zero, ``from``'s tokens were burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
* being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
* that `ownerOf(tokenId)` is `a`.
*/
// solhint-disable-next-line func-name-mixedcase
function __unsafe_increaseBalance(address account, uint256 amount) internal {
_balances[account] += amount;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[44] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Burnable.sol)
pragma solidity ^0.8.0;
import "../ERC721Upgradeable.sol";
import "../../../utils/ContextUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be burned (destroyed).
*/
abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable {
function __ERC721Burnable_init() internal onlyInitializing {
}
function __ERC721Burnable_init_unchained() internal onlyInitializing {
}
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_burn(tokenId);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721Upgradeable.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721ReceiverUpgradeable {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165Upgradeable.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721Upgradeable is IERC165Upgradeable {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
function __ERC165_init() internal onlyInitializing {
}
function __ERC165_init_unchained() internal onlyInitializing {
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165Upgradeable).interfaceId;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165Upgradeable {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library MathUpgradeable {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1, "Math: mulDiv overflow");
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMathUpgradeable {
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// must be unchecked in order to support `n = type(int256).min`
return uint256(n >= 0 ? n : -n);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";
/**
* @dev String operations.
*/
library StringsUpgradeable {
bytes16 private constant _SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = MathUpgradeable.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toString(int256 value) internal pure returns (string memory) {
return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMathUpgradeable.abs(value))));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, MathUpgradeable.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return keccak256(bytes(a)) == keccak256(bytes(b));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/ShortStrings.sol)
pragma solidity ^0.8.8;
import "./StorageSlot.sol";
// | string | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
// | length | 0x BB |
type ShortString is bytes32;
/**
* @dev This library provides functions to convert short memory strings
* into a `ShortString` type that can be used as an immutable variable.
*
* Strings of arbitrary length can be optimized using this library if
* they are short enough (up to 31 bytes) by packing them with their
* length (1 byte) in a single EVM word (32 bytes). Additionally, a
* fallback mechanism can be used for every other case.
*
* Usage example:
*
* ```solidity
* contract Named {
* using ShortStrings for *;
*
* ShortString private immutable _name;
* string private _nameFallback;
*
* constructor(string memory contractName) {
* _name = contractName.toShortStringWithFallback(_nameFallback);
* }
*
* function name() external view returns (string memory) {
* return _name.toStringWithFallback(_nameFallback);
* }
* }
* ```
*/
library ShortStrings {
// Used as an identifier for strings longer than 31 bytes.
bytes32 private constant _FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;
error StringTooLong(string str);
error InvalidShortString();
/**
* @dev Encode a string of at most 31 chars into a `ShortString`.
*
* This will trigger a `StringTooLong` error is the input string is too long.
*/
function toShortString(string memory str) internal pure returns (ShortString) {
bytes memory bstr = bytes(str);
if (bstr.length > 31) {
revert StringTooLong(str);
}
return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
}
/**
* @dev Decode a `ShortString` back to a "normal" string.
*/
function toString(ShortString sstr) internal pure returns (string memory) {
uint256 len = byteLength(sstr);
// using `new string(len)` would work locally but is not memory safe.
string memory str = new string(32);
/// @solidity memory-safe-assembly
assembly {
mstore(str, len)
mstore(add(str, 0x20), sstr)
}
return str;
}
/**
* @dev Return the length of a `ShortString`.
*/
function byteLength(ShortString sstr) internal pure returns (uint256) {
uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
if (result > 31) {
revert InvalidShortString();
}
return result;
}
/**
* @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
*/
function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
if (bytes(value).length < 32) {
return toShortString(value);
} else {
StorageSlot.getStringSlot(store).value = value;
return ShortString.wrap(_FALLBACK_SENTINEL);
}
}
/**
* @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
*/
function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
return toString(value);
} else {
return store;
}
}
/**
* @dev Return the length of a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
*
* WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
* actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
*/
function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
return byteLength(value);
} else {
return bytes(store).length;
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
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:
* ```solidity
* 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`, `uint256`._
* _Available since v4.9 for `string`, `bytes`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
struct StringSlot {
string value;
}
struct BytesSlot {
bytes 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
}
}
/**
* @dev Returns an `StringSlot` with member `value` located at `slot`.
*/
function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` representation of the string storage pointer `store`.
*/
function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
/**
* @dev Returns an `BytesSlot` with member `value` located at `slot`.
*/
function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
*/
function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @title Declares the interface for initializing an NFTCollection contract.
* @author batu-inal & HardlyDifficult
*/
interface INFTCollectionInitializer {
function initialize(address payable _creator, string memory _name, string memory _symbol) external;
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @title Declares the type of the collection contract.
* @dev This interface is declared as an ERC-165 interface.
* @author reggieag
*/
interface INFTCollectionType {
function getNFTCollectionType() external view returns (string memory collectionType);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @notice An interface for communicating fees to 3rd party marketplaces.
* @dev Originally implemented in mainnet contract 0x44d6e8933f8271abcf253c72f9ed7e0e4c0323b3
*/
interface IGetFees {
/**
* @notice Get the recipient addresses to which creator royalties should be sent.
* @dev The expected royalty amounts are communicated with `getFeeBps`.
* @param tokenId The ID of the NFT to get royalties for.
* @return recipients An array of addresses to which royalties should be sent.
*/
function getFeeRecipients(uint256 tokenId) external view returns (address payable[] memory recipients);
/**
* @notice Get the creator royalty amounts to be sent to each recipient, in basis points.
* @dev The expected recipients are communicated with `getFeeRecipients`.
* @param tokenId The ID of the NFT to get royalties for.
* @return royaltiesInBasisPoints The array of fees to be sent to each recipient, in basis points.
*/
function getFeeBps(uint256 tokenId) external view returns (uint256[] memory royaltiesInBasisPoints);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
interface IGetRoyalties {
/**
* @notice Get the creator royalties to be sent.
* @dev The data is the same as when calling `getFeeRecipients` and `getFeeBps` separately.
* @param tokenId The ID of the NFT to get royalties for.
* @return recipients An array of addresses to which royalties should be sent.
* @return royaltiesInBasisPoints The array of fees to be sent to each recipient, in basis points.
*/
function getRoyalties(
uint256 tokenId
) external view returns (address payable[] memory recipients, uint256[] memory royaltiesInBasisPoints);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @notice Interface for EIP-2981: NFT Royalty Standard.
* For more see: https://eips.ethereum.org/EIPS/eip-2981.
*/
interface IRoyaltyInfo {
/**
* @notice Get the creator royalties to be sent.
* @param tokenId The ID of the NFT to get royalties for.
* @param salePrice The total price of the sale.
* @return receiver The address to which royalties should be sent.
* @return royaltyAmount The total amount that should be sent to the `receiver`.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
interface ITokenCreator {
/**
* @notice Returns the creator of this NFT collection.
* @param tokenId The ID of the NFT to get the creator payment address for.
* @return creator The creator of this collection.
*/
function tokenCreator(uint256 tokenId) external view returns (address payable creator);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
struct CallWithoutValue {
address target;
bytes callData;
}
error AddressLibrary_Proxy_Call_Did_Not_Return_A_Contract(address addressReturned);
/**
* @title A library for address helpers not already covered by the OZ library.
* @author batu-inal & HardlyDifficult
*/
library AddressLibrary {
using AddressUpgradeable for address;
using AddressUpgradeable for address payable;
/**
* @notice Calls an external contract with arbitrary data and parse the return value into an address.
* @param externalContract The address of the contract to call.
* @param callData The data to send to the contract.
* @return contractAddress The address of the contract returned by the call.
*/
function callAndReturnContractAddress(
address externalContract,
bytes calldata callData
) internal returns (address payable contractAddress) {
bytes memory returnData = externalContract.functionCall(callData);
contractAddress = abi.decode(returnData, (address));
if (!contractAddress.isContract()) {
revert AddressLibrary_Proxy_Call_Did_Not_Return_A_Contract(contractAddress);
}
}
function callAndReturnContractAddress(
CallWithoutValue calldata call
) internal returns (address payable contractAddress) {
contractAddress = callAndReturnContractAddress(call.target, call.callData);
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "../../interfaces/standards/royalties/IGetFees.sol";
import "../../interfaces/standards/royalties/IGetRoyalties.sol";
import "../../interfaces/standards/royalties/IRoyaltyInfo.sol";
import "../../interfaces/standards/royalties/ITokenCreator.sol";
import "../shared/Constants.sol";
/**
* @title Defines various royalty APIs for broad marketplace support.
* @author batu-inal & HardlyDifficult
*/
abstract contract CollectionRoyalties is IGetRoyalties, IGetFees, IRoyaltyInfo, ITokenCreator, ERC165Upgradeable {
/**
* @inheritdoc IGetFees
*/
function getFeeRecipients(uint256 tokenId) external view returns (address payable[] memory recipients) {
recipients = new address payable[](1);
recipients[0] = getTokenCreatorPaymentAddress(tokenId);
}
/**
* @inheritdoc IGetFees
* @dev The tokenId param is ignored since all NFTs return the same value.
*/
function getFeeBps(uint256 /* tokenId */) external pure returns (uint256[] memory royaltiesInBasisPoints) {
royaltiesInBasisPoints = new uint256[](1);
royaltiesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
}
/**
* @inheritdoc IGetRoyalties
*/
function getRoyalties(
uint256 tokenId
) external view returns (address payable[] memory recipients, uint256[] memory royaltiesInBasisPoints) {
recipients = new address payable[](1);
recipients[0] = getTokenCreatorPaymentAddress(tokenId);
royaltiesInBasisPoints = new uint256[](1);
royaltiesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
}
/**
* @notice The address to pay the creator proceeds/royalties for the collection.
* @param tokenId The ID of the NFT to get the creator payment address for.
* @return creatorPaymentAddress The address to which royalties should be paid.
*/
function getTokenCreatorPaymentAddress(
uint256 tokenId
) public view virtual returns (address payable creatorPaymentAddress);
/**
* @inheritdoc IRoyaltyInfo
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount) {
receiver = getTokenCreatorPaymentAddress(tokenId);
unchecked {
royaltyAmount = salePrice / ROYALTY_RATIO;
}
}
/**
* @inheritdoc IERC165Upgradeable
* @dev Checks the supported royalty interfaces.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool interfaceSupported) {
interfaceSupported = (interfaceId == type(IRoyaltyInfo).interfaceId ||
interfaceId == type(ITokenCreator).interfaceId ||
interfaceId == type(IGetRoyalties).interfaceId ||
interfaceId == type(IGetFees).interfaceId ||
super.supportsInterface(interfaceId));
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "@openzeppelin/contracts/utils/ShortStrings.sol";
import "../../interfaces/internal/INFTCollectionType.sol";
/**
* @title A mixin to add the NFTCollectionType interface to a contract.
* @author HardlyDifficult & reggieag
*/
abstract contract NFTCollectionType is INFTCollectionType, ERC165Upgradeable {
using ShortStrings for string;
using ShortStrings for ShortString;
ShortString private immutable _collectionTypeName;
constructor(string memory collectionTypeName) {
_collectionTypeName = collectionTypeName.toShortString();
}
/**
* @notice Returns a name of the type of collection this contract represents.
* @return collectionType The collection type.
*/
function getNFTCollectionType() external view returns (string memory collectionType) {
collectionType = _collectionTypeName.toString();
}
/**
* @inheritdoc IERC165Upgradeable
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool interfaceSupported) {
interfaceSupported = interfaceId == type(INFTCollectionType).interfaceId || super.supportsInterface(interfaceId);
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import "../../interfaces/standards/royalties/ITokenCreator.sol";
error SequentialMintCollection_Caller_Is_Not_Owner(address owner);
error SequentialMintCollection_Minted_NFTs_Must_Be_Burned_First(uint256 totalSupply);
/**
* @title Extends the OZ ERC721 implementation for collections which mint sequential token IDs.
* @author batu-inal & HardlyDifficult
*/
abstract contract SequentialMintCollection is ITokenCreator, ERC721BurnableUpgradeable {
/****** Slot 0 (after inheritance) ******/
/**
* @notice The creator/owner of this NFT collection.
* @dev This is the default royalty recipient if a different `paymentAddress` was not provided.
* @return The collection's creator/owner address.
*/
address payable public owner;
/**
* @notice The tokenId of the most recently created NFT.
* @dev Minting starts at tokenId 1. Each mint will use this value + 1.
* @return The most recently minted tokenId, or 0 if no NFTs have been minted yet.
*/
uint32 public latestTokenId;
/**
* @notice Tracks how many tokens have been burned.
* @dev This number is used to calculate the total supply efficiently.
*/
uint32 private burnCounter;
// 32-bits free space
/****** End of storage ******/
/**
* @notice Emitted when this collection is self destructed by the creator/owner/admin.
* @param admin The account which requested this contract be self destructed.
*/
event SelfDestruct(address indexed admin);
modifier onlyOwner() {
if (msg.sender != owner) {
revert SequentialMintCollection_Caller_Is_Not_Owner(owner);
}
_;
}
function _initializeSequentialMintCollection(address payable _creator) internal {
owner = _creator;
}
/**
* @notice Allows the collection owner to destroy this contract only if
* no NFTs have been minted yet or the minted NFTs have been burned.
*/
function _selfDestruct() internal {
if (totalSupply() != 0) {
revert SequentialMintCollection_Minted_NFTs_Must_Be_Burned_First(totalSupply());
}
emit SelfDestruct(msg.sender);
selfdestruct(payable(msg.sender));
}
function _burn(uint256 tokenId) internal virtual override {
unchecked {
// Number of burned tokens cannot exceed latestTokenId which is the same size.
++burnCounter;
}
super._burn(tokenId);
}
/**
* @inheritdoc ITokenCreator
* @dev The tokenId param is ignored since all NFTs return the same value.
*/
function tokenCreator(uint256 /* tokenId */) external view returns (address payable creator) {
creator = owner;
}
/**
* @notice Returns the total amount of tokens stored by the contract.
* @dev From the ERC-721 enumerable standard.
* @return supply The total number of NFTs tracked by this contract.
*/
function totalSupply() public view returns (uint256 supply) {
unchecked {
// Number of tokens minted is always >= burned tokens.
supply = latestTokenId - burnCounter;
}
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "./SequentialMintCollection.sol";
error TokenLimitedCollection_Max_Token_Id_May_Not_Be_Cleared(uint256 currentMaxTokenId);
error TokenLimitedCollection_Max_Token_Id_May_Not_Increase(uint256 currentMaxTokenId);
error TokenLimitedCollection_Max_Token_Id_Must_Be_Greater_Than_Current_Minted_Count(uint256 currentMintedCount);
error TokenLimitedCollection_Max_Token_Id_Must_Not_Be_Zero();
/**
* @title Defines an upper limit on the number of tokens which may be minted by this collection.
* @author HardlyDifficult
*/
abstract contract TokenLimitedCollection is SequentialMintCollection {
/**
* @notice The max tokenId which can be minted.
* @dev This max may be less than the final `totalSupply` if 1 or more tokens were burned.
* @return The max tokenId which can be minted.
*/
uint32 public maxTokenId;
/**
* @notice Emitted when the max tokenId supported by this collection is updated.
* @param maxTokenId The new max tokenId. All NFTs in this collection will have a tokenId less than
* or equal to this value.
*/
event MaxTokenIdUpdated(uint256 indexed maxTokenId);
function _initializeTokenLimitedCollection(uint32 _maxTokenId) internal {
if (_maxTokenId == 0) {
// When 0 is desired, the collection may choose to simply not call this initializer.
revert TokenLimitedCollection_Max_Token_Id_Must_Not_Be_Zero();
}
maxTokenId = _maxTokenId;
}
/**
* @notice Allows the owner to set a max tokenID.
* This provides a guarantee to collectors about the limit of this collection contract, if applicable.
* @dev Once this value has been set, it may be decreased but can never be increased.
* @param _maxTokenId The max tokenId to set, all NFTs must have a tokenId less than or equal to this value.
*/
function _updateMaxTokenId(uint32 _maxTokenId) internal {
if (_maxTokenId == 0) {
revert TokenLimitedCollection_Max_Token_Id_May_Not_Be_Cleared(maxTokenId);
}
if (maxTokenId != 0 && _maxTokenId >= maxTokenId) {
revert TokenLimitedCollection_Max_Token_Id_May_Not_Increase(maxTokenId);
}
if (latestTokenId > _maxTokenId) {
revert TokenLimitedCollection_Max_Token_Id_Must_Be_Greater_Than_Current_Minted_Count(latestTokenId);
}
maxTokenId = _maxTokenId;
emit MaxTokenIdUpdated(_maxTokenId);
}
}// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.18; /// Constant values shared across mixins. /** * @dev 100% in basis points. */ uint256 constant BASIS_POINTS = 10_000; /** * @dev The default admin role defined by OZ ACL modules. */ bytes32 constant DEFAULT_ADMIN_ROLE = 0x00; //////////////////////////////////////////////////////////////// // Royalties & Take Rates //////////////////////////////////////////////////////////////// /** * @dev The max take rate an exhibition can have. */ uint256 constant MAX_EXHIBITION_TAKE_RATE = 5_000; /** * @dev Cap the number of royalty recipients. * A cap is required to ensure gas costs are not too high when a sale is settled. */ uint256 constant MAX_ROYALTY_RECIPIENTS = 5; /** * @dev Default royalty cut paid out on secondary sales. * Set to 10% of the secondary sale. */ uint96 constant ROYALTY_IN_BASIS_POINTS = 1_000; /** * @dev Reward paid to referrers when a sale is made. * Set to 1% of the sale amount. This 1% is deducted from the protocol fee. */ uint96 constant BUY_REFERRER_IN_BASIS_POINTS = 100; /** * @dev 10%, expressed as a denominator for more efficient calculations. */ uint256 constant ROYALTY_RATIO = BASIS_POINTS / ROYALTY_IN_BASIS_POINTS; /** * @dev 1%, expressed as a denominator for more efficient calculations. */ uint256 constant BUY_REFERRER_RATIO = BASIS_POINTS / BUY_REFERRER_IN_BASIS_POINTS; //////////////////////////////////////////////////////////////// // Gas Limits //////////////////////////////////////////////////////////////// /** * @dev The gas limit used when making external read-only calls. * This helps to ensure that external calls does not prevent the market from executing. */ uint256 constant READ_ONLY_GAS_LIMIT = 40_000; /** * @dev The gas limit to send ETH to multiple recipients, enough for a 5-way split. */ uint256 constant SEND_VALUE_GAS_LIMIT_MULTIPLE_RECIPIENTS = 210_000; /** * @dev The gas limit to send ETH to a single recipient, enough for a contract with a simple receiver. */ uint256 constant SEND_VALUE_GAS_LIMIT_SINGLE_RECIPIENT = 20_000; //////////////////////////////////////////////////////////////// // Collection Type Names //////////////////////////////////////////////////////////////// /** * @dev The NFT collection type. */ string constant NFT_COLLECTION_TYPE = "NFT Collection"; /** * @dev The NFT drop collection type. */ string constant NFT_DROP_COLLECTION_TYPE = "NFT Drop Collection"; /** * @dev The NFT timed edition collection type. */ string constant NFT_TIMED_EDITION_COLLECTION_TYPE = "NFT Timed Edition Collection"; /** * @dev The NFT limited edition collection type. */ string constant NFT_LIMITED_EDITION_COLLECTION_TYPE = "NFT Limited Edition Collection"; //////////////////////////////////////////////////////////////// // Business Logic //////////////////////////////////////////////////////////////// /** * @dev Limits scheduled start/end times to be less than 2 years in the future. */ uint256 constant MAX_SCHEDULED_TIME_IN_THE_FUTURE = 365 days * 2; /** * @dev The minimum increase of 10% required when making an offer or placing a bid. */ uint256 constant MIN_PERCENT_INCREMENT_DENOMINATOR = BASIS_POINTS / 1_000; /** * @dev Protocol fee for edition mints in basis points. */ uint256 constant EDITION_PROTOCOL_FEE_IN_BASIS_POINTS = 500; /** * @dev Hash of the edition type names. * This is precalculated in order to save gas on use. * `keccak256(abi.encodePacked(NFT_TIMED_EDITION_COLLECTION_TYPE))` */ bytes32 constant timedEditionTypeHash = 0xee2afa3f960e108aca17013728aafa363a0f4485661d9b6f41c6b4ddb55008ee; bytes32 constant limitedEditionTypeHash = 0x7df1f68d01ab1a6ee0448a4c3fbda832177331ff72c471b12b0051c96742eef5;
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
error ContractFactory_Only_Callable_By_Factory_Contract(address contractFactory);
error ContractFactory_Factory_Is_Not_A_Contract();
/**
* @title Stores a reference to the factory which is used to create contract proxies.
* @author batu-inal & HardlyDifficult
*/
abstract contract ContractFactory {
using AddressUpgradeable for address;
/**
* @notice The address of the factory which was used to create this contract.
* @return The factory contract address.
*/
address public immutable contractFactory;
modifier onlyContractFactory() {
if (msg.sender != contractFactory) {
revert ContractFactory_Only_Callable_By_Factory_Contract(contractFactory);
}
_;
}
/**
* @notice Initialize the template's immutable variables.
* @param _contractFactory The factory which will be used to create these contracts.
*/
constructor(address _contractFactory) {
if (!_contractFactory.isContract()) {
revert ContractFactory_Factory_Is_Not_A_Contract();
}
contractFactory = _contractFactory;
}
}{
"optimizer": {
"enabled": true,
"runs": 1337000
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"metadata": {
"useLiteralContent": true
},
"libraries": {}
}Contract ABI
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Multichain Portfolio | 34 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.