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ERC721URIStorage

Git Source

Title: ERC721URIStorage

Author: Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/extensions/ERC721URIStorage.sol)

Stateless Diamond facet for ERC-721 with per-token URI storage (EIP-4906).

Owns ONLY its own selectors — setTokenURI (new) and tokenURI, which REPLACES the base ERC721 variant to read per-token URI storage. It does NOT inherit the ERC721 facet — doing so would re-export the base ERC-721 surface and collide with the standalone ERC721 facet in a Diamond (and is IERC721URIStorage would drag in the whole IERC721 surface, forcing a re-export). The ERC-721 base surface comes from a separately-cut ERC721 facet; DeployERC721URIStorage composes both. The EIP-4906 metadata-update events are emitted by ERC721URIStorageLib. Pure delegator pattern.

Notes:

  • lattice-version: 0.1.0
  • lattice-source: OpenZeppelin v5.6.1

Functions

tokenURI

Returns the URI for tokenId.

Replaces the base ERC721 tokenURI to use per-token URI storage.

 
function tokenURI(uint256 tokenId) public view virtual returns (string memory);

Parameters

NameTypeDescription
tokenIduint256

Returns

NameTypeDescription
<none>string

setTokenURI

Sets the per-token URI for tokenId. Admin-gated.

function setTokenURI(uint256 tokenId, string memory uri) public virtual;

Parameters

NameTypeDescription
tokenIduint256
uristring

exportSelectors

ERC-8153 selector export: this facet's cuttable selectors, tightly packed (4 bytes each).

Excludes exportSelectors() itself (0x0ef22643) - it is never cut into a diamond. Order matches forge inspect ERC721URIStorage methodIdentifiers (alphabetical by signature); kept in exact parity by ExportSelectorsParityTest. Chunks: setTokenURI(uint256,string) 0x162094c4 tokenURI(uint256) 0xc87b56dd

 
function exportSelectors() external pure virtual returns (bytes memory selectors);

Returns

NameTypeDescription
selectorsbytes