ERC721AFacet

ERC721AFacet

_Implementation of the ERC721 Non-Fungible Token Standard, including the Metadata extension. Optimized for lower gas during batch mints.

Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...) starting from _startTokenId().

Assumptions:

• An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.

• The maximum token ID cannot exceed 2**256 - 1 (max value of uint256)._

totalSupply

function totalSupply() public view virtual returns (uint256)

_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}.

balanceOf

function balanceOf(address owner) public view virtual returns (uint256)

Returns the number of tokens in owner's account.

name

function name() public view virtual returns (string)

Returns the token collection name.

symbol

function symbol() public view virtual returns (string)

Returns the token collection symbol.

ownerOf

function ownerOf(uint256 tokenId) public view virtual returns (address)

_Returns the owner of the tokenId token.

Requirements:

• tokenId must exist._

approve

function approve(address to, uint256 tokenId) public payable virtual

_Gives permission to to to transfer tokenId token to another account. See {ERC721A-_approve}.

Requirements:

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

getApproved

function getApproved(uint256 tokenId) public view virtual returns (address)

_Returns the account approved for tokenId token.

Requirements:

• tokenId must exist._

setApprovalForAll

function setApprovalForAll(address operator, bool approved) public virtual

_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._

isApprovedForAll

function isApprovedForAll(address owner, address operator) public view virtual returns (bool)

_Returns if the operator is allowed to manage all of the assets of owner.

See {setApprovalForAll}._

transferFrom

function transferFrom(address from, address to, uint256 tokenId) public payable virtual

_Transfers tokenId from from to to.

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._

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId) public payable virtual

Equivalent to safeTransferFrom(from, to, tokenId, '').

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId, bytes _data) public payable virtual

_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._

_afterTokenTransfers

function _afterTokenTransfers(address from, address to, uint256 startTokenId, uint256 quantity) internal virtual

_Hook that is called after a set of serially-ordered token IDs have been transferred. This includes minting. And also called after one token has been burned.

startTokenId - the first token ID to be transferred. quantity - the amount to be transferred.

Calling conditions:

• When from and to are both non-zero, from's tokenId has been transferred to to.

• When from is zero, tokenId has been minted for to.

• When to is zero, tokenId has been burned by from.

• from and to are never both zero._

_beforeTokenTransfers

function _beforeTokenTransfers(address from, address to, uint256 startTokenId, uint256 quantity) internal virtual

_Hook that is called before a set of serially-ordered token IDs are about to be transferred. This includes minting. And also called before burning one token.

startTokenId - the first token ID to be transferred. quantity - the amount to be transferred.

Calling conditions:

• When from and to are both non-zero, from's tokenId will be transferred to to.

• When from is zero, tokenId will be minted for to.

• When to is zero, tokenId will be burned by from.

• from and to are never both zero._