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ERC721AUpgradeable

Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension. Built to optimize for lower gas during batch mints. Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..). Assumes that an owner cannot have more than 264 - 1 (max value of uint64) of supply. Assumes that the maximum token id cannot exceed 2256 - 1 (max value of uint256).

Methods

approve

function approve(address to, uint256 tokenId) external nonpayable

See {IERC721-approve}.

Parameters

NameTypeDescription
toaddressundefined
tokenIduint256undefined

balanceOf

function balanceOf(address owner) external view returns (uint256)

See {IERC721-balanceOf}.

Parameters

NameTypeDescription
owneraddressundefined

Returns

NameTypeDescription
_0uint256undefined

getApproved

function getApproved(uint256 tokenId) external view returns (address)

See {IERC721-getApproved}.

Parameters

NameTypeDescription
tokenIduint256undefined

Returns

NameTypeDescription
_0addressundefined

isApprovedForAll

function isApprovedForAll(address owner, address operator) external view returns (bool)

See {IERC721-isApprovedForAll}.

Parameters

NameTypeDescription
owneraddressundefined
operatoraddressundefined

Returns

NameTypeDescription
_0boolundefined

name

function name() external view returns (string)

See {IERC721Metadata-name}.

Returns

NameTypeDescription
_0stringundefined

ownerOf

function ownerOf(uint256 tokenId) external view returns (address)

See {IERC721-ownerOf}.

Parameters

NameTypeDescription
tokenIduint256undefined

Returns

NameTypeDescription
_0addressundefined

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId, bytes _data) external nonpayable

See {IERC721-safeTransferFrom}.

Parameters

NameTypeDescription
fromaddressundefined
toaddressundefined
tokenIduint256undefined
_databytesundefined

setApprovalForAll

function setApprovalForAll(address operator, bool approved) external nonpayable

See {IERC721-setApprovalForAll}.

Parameters

NameTypeDescription
operatoraddressundefined
approvedboolundefined

supportsInterface

function supportsInterface(bytes4 interfaceId) external view returns (bool)

See {IERC165-supportsInterface}.

Parameters

NameTypeDescription
interfaceIdbytes4undefined

Returns

NameTypeDescription
_0boolundefined

symbol

function symbol() external view returns (string)

See {IERC721Metadata-symbol}.

Returns

NameTypeDescription
_0stringundefined

tokenURI

function tokenURI(uint256 tokenId) external view returns (string)

See {IERC721Metadata-tokenURI}.

Parameters

NameTypeDescription
tokenIduint256undefined

Returns

NameTypeDescription
_0stringundefined

totalSupply

function totalSupply() external view returns (uint256)

Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.

Returns

NameTypeDescription
_0uint256undefined

transferFrom

function transferFrom(address from, address to, uint256 tokenId) external nonpayable

See {IERC721-transferFrom}.

Parameters

NameTypeDescription
fromaddressundefined
toaddressundefined
tokenIduint256undefined

Events

Approval

event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)

Parameters

NameTypeDescription
owner indexedaddressundefined
approved indexedaddressundefined
tokenId indexeduint256undefined

ApprovalForAll

event ApprovalForAll(address indexed owner, address indexed operator, bool approved)

Parameters

NameTypeDescription
owner indexedaddressundefined
operator indexedaddressundefined
approvedboolundefined

Transfer

event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)

Parameters

NameTypeDescription
from indexedaddressundefined
to indexedaddressundefined
tokenId indexeduint256undefined

Errors

ApprovalCallerNotOwnerNorApproved

error ApprovalCallerNotOwnerNorApproved()

The caller must own the token or be an approved operator.

ApprovalQueryForNonexistentToken

error ApprovalQueryForNonexistentToken()

The token does not exist.

ApprovalToCurrentOwner

error ApprovalToCurrentOwner()

The caller cannot approve to the current owner.

ApproveToCaller

error ApproveToCaller()

The caller cannot approve to their own address.

BalanceQueryForZeroAddress

error BalanceQueryForZeroAddress()

Cannot query the balance for the zero address.

MintToZeroAddress

error MintToZeroAddress()

Cannot mint to the zero address.

MintZeroQuantity

error MintZeroQuantity()

The quantity of tokens minted must be more than zero.

OwnerQueryForNonexistentToken

error OwnerQueryForNonexistentToken()

The token does not exist.

TransferCallerNotOwnerNorApproved

error TransferCallerNotOwnerNorApproved()

The caller must own the token or be an approved operator.

TransferFromIncorrectOwner

error TransferFromIncorrectOwner()

The token must be owned by from.

TransferToNonERC721ReceiverImplementer

error TransferToNonERC721ReceiverImplementer()

Cannot safely transfer to a contract that does not implement the ERC721Receiver interface.

TransferToZeroAddress

error TransferToZeroAddress()

Cannot transfer to the zero address.

URIQueryForNonexistentToken

error URIQueryForNonexistentToken()

The token does not exist.