ERC1155URIStorage

Inherits: ERC1155

ERC-1155 token with storage based token URI management. Inspired by the {ERC721URIStorage} extension

State Variables

_baseURI

string private _baseURI = "";

_tokenURIs

mapping(uint256 tokenId => string) private _tokenURIs;

Functions

uri

*See {IERC1155MetadataURI-uri}. This implementation returns the concatenation of the _baseURI and the token-specific uri if the latter is set This enables the following behaviors:

• if _tokenURIs[tokenId] is set, then the result is the concatenation of _baseURI and _tokenURIs[tokenId] (keep in mind that _baseURI is empty per default);
• if _tokenURIs[tokenId] is NOT set then we fallback to super.uri() which in most cases will contain ERC1155._uri;
• if _tokenURIs[tokenId] is NOT set, and if the parents do not have a uri value set, then the result is empty.*

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

_setURI

Sets tokenURI as the tokenURI of tokenId.

function _setURI(uint256 tokenId, string memory tokenURI) internal virtual;

_setBaseURI

Sets baseURI as the _baseURI for all tokens

function _setBaseURI(string memory baseURI) internal virtual;