ERC-1155 URI emitter

arif.W · May 16, 2021, 7:27am

IERC1155 is OK .

OpenZeppelin/openzeppelin-contracts/blob/c3ae4790c71b7f53cc8fff743536dcb7031fed74/contracts/token/ERC1155/IERC1155.sol#L38

    
      
           */
          event ApprovalForAll(address indexed account, address indexed operator, bool approved);
          
          
/**
           * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
           *
           * If an {URI} event was emitted for `id`, the standard
           * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
           * returned by {IERC1155MetadataURI-uri}.
           */
          event URI(string value, uint256 indexed id);
          
          
/**
           * @dev Returns the amount of tokens of token type `id` owned by `account`.
           *
           * Requirements:
           *
           * - `account` cannot be the zero address.
           */
          function balanceOf(address account, uint256 id) external view returns (uint256);

Seems I cannot found any implementation of URI event emitter at any related solidity files, could anyone help explain about it ?
Thank you.

Environment

Details

Code to reproduce

Cosimo_de_Medici_di · May 24, 2022, 7:13am

github.com

OpenZeppelin/openzeppelin-contracts/blob/v4.6.0/contracts/token/ERC1155/extensions/ERC1155URIStorage.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC1155/extensions/ERC1155URIStorage.sol)

pragma solidity ^0.8.0;

import "../../../utils/Strings.sol";
import "../ERC1155.sol";

/**
 * @dev ERC1155 token with storage based token URI management.
 * Inspired by the ERC721URIStorage extension
 *
 * _Available since v4.6._
 */
abstract contract ERC1155URIStorage is ERC1155 {
    using Strings for uint256;

    // Optional base URI
    string private _baseURI = "";

This file has been truncated. show original

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ERC-1155 URI emitter

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