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| // SPDX-License-Identifier: MIT OR Apache-2.0 | |
| pragma solidity >=0.8.13 <0.9.0; | |
| import {IERC165} from "./IERC165.sol"; | |
| /// @title ERC-721 Non-Fungible Token Standard | |
| /// @dev See https://eips.ethereum.org/EIPS/eip-721 | |
| /// Note: the ERC-165 identifier for this interface is 0x80ac58cd. | |
| interface IERC721 is IERC165 { | |
| /// @dev This emits when ownership of any NFT changes by any mechanism. | |
| /// This event emits when NFTs are created (`from` == 0) and destroyed | |
| /// (`to` == 0). Exception: during contract creation, any number of NFTs | |
| /// may be created and assigned without emitting Transfer. At the time of | |
| /// any transfer, the approved address for that NFT (if any) is reset to none. | |
| event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId); | |
| /// @dev This emits when the approved address for an NFT is changed or | |
| /// reaffirmed. The zero address indicates there is no approved address. | |
| /// When a Transfer event emits, this also indicates that the approved | |
| /// address for that NFT (if any) is reset to none. | |
| event Approval(address indexed _owner, address indexed _approved, uint256 indexed _tokenId); | |
| /// @dev This emits when an operator is enabled or disabled for an owner. | |
| /// The operator can manage all NFTs of the owner. | |
| event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved); | |
| /// @notice Count all NFTs assigned to an owner | |
| /// @dev NFTs assigned to the zero address are considered invalid, and this | |
| /// function throws for queries about the zero address. | |
| /// @param _owner An address for whom to query the balance | |
| /// @return The number of NFTs owned by `_owner`, possibly zero | |
| function balanceOf(address _owner) external view returns (uint256); | |
| /// @notice Find the owner of an NFT | |
| /// @dev NFTs assigned to zero address are considered invalid, and queries | |
| /// about them do throw. | |
| /// @param _tokenId The identifier for an NFT | |
| /// @return The address of the owner of the NFT | |
| function ownerOf(uint256 _tokenId) external view returns (address); | |
| /// @notice Transfers the ownership of an NFT from one address to another address | |
| /// @dev Throws unless `msg.sender` is the current owner, an authorized | |
| /// operator, or the approved address for this NFT. Throws if `_from` is | |
| /// not the current owner. Throws if `_to` is the zero address. Throws if | |
| /// `_tokenId` is not a valid NFT. When transfer is complete, this function | |
| /// checks if `_to` is a smart contract (code size > 0). If so, it calls | |
| /// `onERC721Received` on `_to` and throws if the return value is not | |
| /// `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`. | |
| /// @param _from The current owner of the NFT | |
| /// @param _to The new owner | |
| /// @param _tokenId The NFT to transfer | |
| /// @param data Additional data with no specified format, sent in call to `_to` | |
| function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes calldata data) external payable; | |
| /// @notice Transfers the ownership of an NFT from one address to another address | |
| /// @dev This works identically to the other function with an extra data parameter, | |
| /// except this function just sets data to "". | |
| /// @param _from The current owner of the NFT | |
| /// @param _to The new owner | |
| /// @param _tokenId The NFT to transfer | |
| function safeTransferFrom(address _from, address _to, uint256 _tokenId) external payable; | |
| /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE | |
| /// TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE | |
| /// THEY MAY BE PERMANENTLY LOST | |
| /// @dev Throws unless `msg.sender` is the current owner, an authorized | |
| /// operator, or the approved address for this NFT. Throws if `_from` is | |
| /// not the current owner. Throws if `_to` is the zero address. Throws if | |
| /// `_tokenId` is not a valid NFT. | |
| /// @param _from The current owner of the NFT | |
| /// @param _to The new owner | |
| /// @param _tokenId The NFT to transfer | |
| function transferFrom(address _from, address _to, uint256 _tokenId) external payable; | |
| /// @notice Change or reaffirm the approved address for an NFT | |
| /// @dev The zero address indicates there is no approved address. | |
| /// Throws unless `msg.sender` is the current NFT owner, or an authorized | |
| /// operator of the current owner. | |
| /// @param _approved The new approved NFT controller | |
| /// @param _tokenId The NFT to approve | |
| function approve(address _approved, uint256 _tokenId) external payable; | |
| /// @notice Enable or disable approval for a third party ("operator") to manage | |
| /// all of `msg.sender`'s assets | |
| /// @dev Emits the ApprovalForAll event. The contract MUST allow | |
| /// multiple operators per owner. | |
| /// @param _operator Address to add to the set of authorized operators | |
| /// @param _approved True if the operator is approved, false to revoke approval | |
| function setApprovalForAll(address _operator, bool _approved) external; | |
| /// @notice Get the approved address for a single NFT | |
| /// @dev Throws if `_tokenId` is not a valid NFT. | |
| /// @param _tokenId The NFT to find the approved address for | |
| /// @return The approved address for this NFT, or the zero address if there is none | |
| function getApproved(uint256 _tokenId) external view returns (address); | |
| /// @notice Query if an address is an authorized operator for another address | |
| /// @param _owner The address that owns the NFTs | |
| /// @param _operator The address that acts on behalf of the owner | |
| /// @return True if `_operator` is an approved operator for `_owner`, false otherwise | |
| function isApprovedForAll(address _owner, address _operator) external view returns (bool); | |
| } | |
| /// @dev Note: the ERC-165 identifier for this interface is 0x150b7a02. | |
| interface IERC721TokenReceiver { | |
| /// @notice Handle the receipt of an NFT | |
| /// @dev The ERC721 smart contract calls this function on the recipient | |
| /// after a `transfer`. This function MAY throw to revert and reject the | |
| /// transfer. Return of other than the magic value MUST result in the | |
| /// transaction being reverted. | |
| /// Note: the contract address is always the message sender. | |
| /// @param _operator The address which called `safeTransferFrom` function | |
| /// @param _from The address which previously owned the token | |
| /// @param _tokenId The NFT identifier which is being transferred | |
| /// @param _data Additional data with no specified format | |
| /// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` | |
| /// unless throwing | |
| function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes calldata _data) | |
| external | |
| returns (bytes4); | |
| } | |
| /// @title ERC-721 Non-Fungible Token Standard, optional metadata extension | |
| /// @dev See https://eips.ethereum.org/EIPS/eip-721 | |
| /// Note: the ERC-165 identifier for this interface is 0x5b5e139f. | |
| interface IERC721Metadata is IERC721 { | |
| /// @notice A descriptive name for a collection of NFTs in this contract | |
| function name() external view returns (string memory _name); | |
| /// @notice An abbreviated name for NFTs in this contract | |
| function symbol() external view returns (string memory _symbol); | |
| /// @notice A distinct Uniform Resource Identifier (URI) for a given asset. | |
| /// @dev Throws if `_tokenId` is not a valid NFT. URIs are defined in RFC | |
| /// 3986. The URI may point to a JSON file that conforms to the "ERC721 | |
| /// Metadata JSON Schema". | |
| function tokenURI(uint256 _tokenId) external view returns (string memory); | |
| } | |
| /// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension | |
| /// @dev See https://eips.ethereum.org/EIPS/eip-721 | |
| /// Note: the ERC-165 identifier for this interface is 0x780e9d63. | |
| interface IERC721Enumerable is IERC721 { | |
| /// @notice Count NFTs tracked by this contract | |
| /// @return A count of valid NFTs tracked by this contract, where each one of | |
| /// them has an assigned and queryable owner not equal to the zero address | |
| function totalSupply() external view returns (uint256); | |
| /// @notice Enumerate valid NFTs | |
| /// @dev Throws if `_index` >= `totalSupply()`. | |
| /// @param _index A counter less than `totalSupply()` | |
| /// @return The token identifier for the `_index`th NFT, | |
| /// (sort order not specified) | |
| function tokenByIndex(uint256 _index) external view returns (uint256); | |
| /// @notice Enumerate NFTs assigned to an owner | |
| /// @dev Throws if `_index` >= `balanceOf(_owner)` or if | |
| /// `_owner` is the zero address, representing invalid NFTs. | |
| /// @param _owner An address where we are interested in NFTs owned by them | |
| /// @param _index A counter less than `balanceOf(_owner)` | |
| /// @return The token identifier for the `_index`th NFT assigned to `_owner`, | |
| /// (sort order not specified) | |
| function tokenOfOwnerByIndex(address _owner, uint256 _index) external view returns (uint256); | |
| } | |