ERC1155URIStorageLib

Title: ERC1155URIStorageLib

Authors: David Dada <daveproxy80@gmail.com> (https://github.com/dadadave80), Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC1155/extensions/ERC1155URIStorage.sol)

Library implementing per-token URI storage for ERC-1155 tokens, with an optional base URI.

Composed with ERC1155Lib: a token without a per-token URI falls back to the ERC-1155 URI template. All state lives in its own ERC-7201 slot.

Functions

erc1155URIStorageStorage

function erc1155URIStorageStorage() internal pure returns (ERC1155URIStorageStorage storage $);

Returns

Name	Type	Description
$	`ERC1155URIStorageStorage`

__ERC1155URIStorage_init

Initializes the ERC-1155 URI storage module: registers IERC1155URIStorage via ERC-165.

Must be called inside a pre/postInitializer block. The base URI starts empty, as in OpenZeppelin.

function __ERC1155URIStorage_init() internal;

registerInterface

Registers support for the IERC1155URIStorage interface via ERC-165.

function registerInterface() internal;

uri

Returns the URI for token type tokenId.

If a per-token URI is set, returns the base URI followed by it (the base URI is empty by default). Otherwise returns ERC1155Lib.uri, the ERC-1155 URI template, which is empty if never set.

function uri(uint256 tokenId) internal view returns (string memory);

Parameters

Name	Type	Description
tokenId	`uint256`

Returns

Name	Type	Description
<none>	`string`

_setURI

Sets tokenURI as the per-token URI of tokenId and emits IERC1155.URI with the resolved uri(tokenId).

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

Parameters

Name	Type	Description
tokenId	`uint256`
tokenURI	`string`

_setBaseURI

Sets baseURI as the prefix of every non-empty per-token URI.

function _setBaseURI(string memory baseURI) internal;

Parameters

Name	Type	Description
baseURI	`string`