raffle-contracts/lib/erc721a/docs/erc4907a.md

ERC4907A

erc721a/contracts/extensions/ERC4907A.sol

ERC4907 compliant extension of ERC721A, which allows owners and authorized addresses to add a time-limited role with restricted permissions to ERC721 tokens.

This implementation does not reset the user information upon token transfer. The new owner must call setUser to change or reset the user.

To reset or alter the user information after each transfer, you will need to override either _beforeTokenTransfers or _afterTokenTransfers in ERC721A.

Inherits:

• ERC721A
• IERC4907A

Functions

setUser

function setUser(uint256 tokenId, address user, uint64 expires) public virtual

Sets the user and expires for tokenId.

The zero address indicates there is no user.

Requirements:

• The caller must own tokenId or be an approved operator.

userOf

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

Returns the user address for tokenId.

The zero address indicates that there is no user or if the user is expired.

userExpires

function userExpires(uint256 tokenId) public view virtual returns (uint256)

Returns the user's expires of tokenId.

_explicitUserOf

function _explicitUserOf(uint256 tokenId) internal view virtual returns (address)

Returns the user address for tokenId, ignoring the expiry status.

Events

UpdateUser

IERC4907-UpdateUser

event UpdateUser(uint256 indexed tokenId, address indexed user, uint64 expires)

Emitted when the user of an NFT or the expires of the user is changed.

The zero address for user indicates that there is no user address.