// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. | |
// SPDX-License-Identifier: MIT | |
// ERC721A Contracts v4.2.2 | |
// Creator: Chiru Labs | |
pragma solidity ^0.8.4; | |
/** | |
* @dev Interface of ERC721A. | |
*/ | |
interface IERC721A { | |
/** | |
* The caller must own the token or be an approved operator. | |
*/ | |
error ApprovalCallerNotOwnerNorApproved(); | |
/** | |
* The token does not exist. | |
*/ | |
error ApprovalQueryForNonexistentToken(); | |
/** | |
* Cannot query the balance for the zero address. | |
*/ | |
error BalanceQueryForZeroAddress(); | |
/** | |
* Cannot mint to the zero address. | |
*/ | |
error MintToZeroAddress(); | |
/** | |
* The quantity of tokens minted must be more than zero. | |
*/ | |
error MintZeroQuantity(); | |
/** | |
* The token does not exist. | |
*/ | |
error OwnerQueryForNonexistentToken(); | |
/** | |
* The caller must own the token or be an approved operator. | |
*/ | |
error TransferCallerNotOwnerNorApproved(); | |
/** | |
* The token must be owned by `from`. | |
*/ | |
error TransferFromIncorrectOwner(); | |
/** | |
* Cannot safely transfer to a contract that does not implement the | |
* ERC721Receiver interface. | |
*/ | |
error TransferToNonERC721ReceiverImplementer(); | |
/** | |
* Cannot transfer to the zero address. | |
*/ | |
error TransferToZeroAddress(); | |
/** | |
* The token does not exist. | |
*/ | |
error URIQueryForNonexistentToken(); | |
/** | |
* The `quantity` minted with ERC2309 exceeds the safety limit. | |
*/ | |
error MintERC2309QuantityExceedsLimit(); | |
/** | |
* The `extraData` cannot be set on an unintialized ownership slot. | |
*/ | |
error OwnershipNotInitializedForExtraData(); | |
// ============================================================= | |
// STRUCTS | |
// ============================================================= | |
struct TokenOwnership { | |
// The address of the owner. | |
address addr; | |
// Stores the start time of ownership with minimal overhead for tokenomics. | |
uint64 startTimestamp; | |
// Whether the token has been burned. | |
bool burned; | |
// Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. | |
uint24 extraData; | |
} | |
// ============================================================= | |
// TOKEN COUNTERS | |
// ============================================================= | |
/** | |
* @dev Returns the total number of tokens in existence. | |
* Burned tokens will reduce the count. | |
* To get the total number of tokens minted, please see {_totalMinted}. | |
*/ | |
function totalSupply() external view returns (uint256); | |
// ============================================================= | |
// IERC165 | |
// ============================================================= | |
/** | |
* @dev Returns true if this contract implements the interface defined by | |
* `interfaceId`. See the corresponding | |
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) | |
* to learn more about how these ids are created. | |
* | |
* This function call must use less than 30000 gas. | |
*/ | |
function supportsInterface(bytes4 interfaceId) external view returns (bool); | |
// ============================================================= | |
// IERC721 | |
// ============================================================= | |
/** | |
* @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`, | |
* 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 be 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, | |
bytes calldata data | |
) external payable; | |
/** | |
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 tokenId | |
) external payable; | |
/** | |
* @dev Transfers `tokenId` from `from` to `to`. | |
* | |
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} | |
* whenever possible. | |
* | |
* 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 payable; | |
/** | |
* @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 payable; | |
/** | |
* @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); | |
// ============================================================= | |
// IERC721Metadata | |
// ============================================================= | |
/** | |
* @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); | |
// ============================================================= | |
// IERC2309 | |
// ============================================================= | |
/** | |
* @dev Emitted when tokens in `fromTokenId` to `toTokenId` | |
* (inclusive) is transferred from `from` to `to`, as defined in the | |
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. | |
* | |
* See {_mintERC2309} for more details. | |
*/ | |
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); | |
} | |