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283 lines
8.5 KiB
Solidity
283 lines
8.5 KiB
Solidity
2 years ago
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// SPDX-License-Identifier: MIT
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// ERC721A Contracts v4.2.3
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// Creator: Chiru Labs
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pragma solidity ^0.8.4;
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/**
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* @dev Interface of ERC721A.
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*/
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interface IERC721A {
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/**
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* The caller must own the token or be an approved operator.
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*/
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error ApprovalCallerNotOwnerNorApproved();
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/**
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* The token does not exist.
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*/
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error ApprovalQueryForNonexistentToken();
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/**
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* Cannot query the balance for the zero address.
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*/
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error BalanceQueryForZeroAddress();
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/**
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* Cannot mint to the zero address.
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*/
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error MintToZeroAddress();
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/**
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* The quantity of tokens minted must be more than zero.
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*/
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error MintZeroQuantity();
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/**
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* The token does not exist.
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*/
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error OwnerQueryForNonexistentToken();
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/**
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* The caller must own the token or be an approved operator.
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*/
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error TransferCallerNotOwnerNorApproved();
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/**
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* The token must be owned by `from`.
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*/
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error TransferFromIncorrectOwner();
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/**
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* Cannot safely transfer to a contract that does not implement the
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* ERC721Receiver interface.
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*/
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error TransferToNonERC721ReceiverImplementer();
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/**
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* Cannot transfer to the zero address.
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*/
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error TransferToZeroAddress();
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/**
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* The token does not exist.
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*/
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error URIQueryForNonexistentToken();
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/**
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* The `quantity` minted with ERC2309 exceeds the safety limit.
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*/
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error MintERC2309QuantityExceedsLimit();
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/**
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* The `extraData` cannot be set on an unintialized ownership slot.
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*/
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error OwnershipNotInitializedForExtraData();
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// =============================================================
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// STRUCTS
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// =============================================================
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struct TokenOwnership {
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// The address of the owner.
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address addr;
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// Stores the start time of ownership with minimal overhead for tokenomics.
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uint64 startTimestamp;
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// Whether the token has been burned.
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bool burned;
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// Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
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uint24 extraData;
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}
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// =============================================================
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// TOKEN COUNTERS
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// =============================================================
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/**
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* @dev Returns the total number of tokens in existence.
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* Burned tokens will reduce the count.
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* To get the total number of tokens minted, please see {_totalMinted}.
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*/
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function totalSupply() external view returns (uint256);
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// =============================================================
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// IERC165
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// =============================================================
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/**
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* @dev Returns true if this contract implements the interface defined by
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* `interfaceId`. See the corresponding
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* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
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* to learn more about how these ids are created.
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*
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* This function call must use less than 30000 gas.
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*/
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function supportsInterface(bytes4 interfaceId) external view returns (bool);
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// =============================================================
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// IERC721
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// =============================================================
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/**
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* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
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*/
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event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
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/**
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* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
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*/
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event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
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/**
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* @dev Emitted when `owner` enables or disables
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* (`approved`) `operator` to manage all of its assets.
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*/
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event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
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/**
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* @dev Returns the number of tokens in `owner`'s account.
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*/
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function balanceOf(address owner) external view returns (uint256 balance);
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/**
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* @dev Returns the owner of the `tokenId` token.
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*
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* Requirements:
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*
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* - `tokenId` must exist.
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*/
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function ownerOf(uint256 tokenId) external view returns (address owner);
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/**
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* @dev Safely transfers `tokenId` token from `from` to `to`,
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* checking first that contract recipients are aware of the ERC721 protocol
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* to prevent tokens from being forever locked.
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*
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* Requirements:
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*
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* - `from` cannot be the zero address.
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* - `to` cannot be the zero address.
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* - `tokenId` token must exist and be owned by `from`.
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* - If the caller is not `from`, it must be have been allowed to move
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* this token by either {approve} or {setApprovalForAll}.
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* - If `to` refers to a smart contract, it must implement
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* {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
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*
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* Emits a {Transfer} event.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId,
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bytes calldata data
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) external payable;
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/**
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* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId
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) external payable;
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/**
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* @dev Transfers `tokenId` from `from` to `to`.
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*
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* WARNING: Usage of this method is discouraged, use {safeTransferFrom}
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* whenever possible.
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*
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* Requirements:
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*
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* - `from` cannot be the zero address.
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* - `to` cannot be the zero address.
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* - `tokenId` token must be owned by `from`.
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* - If the caller is not `from`, it must be approved to move this token
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* by either {approve} or {setApprovalForAll}.
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*
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* Emits a {Transfer} event.
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*/
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function transferFrom(
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address from,
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address to,
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uint256 tokenId
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) external payable;
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/**
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* @dev Gives permission to `to` to transfer `tokenId` token to another account.
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* The approval is cleared when the token is transferred.
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*
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* Only a single account can be approved at a time, so approving the
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* zero address clears previous approvals.
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*
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* Requirements:
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*
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* - The caller must own the token or be an approved operator.
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* - `tokenId` must exist.
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*
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* Emits an {Approval} event.
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*/
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function approve(address to, uint256 tokenId) external payable;
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/**
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* @dev Approve or remove `operator` as an operator for the caller.
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* Operators can call {transferFrom} or {safeTransferFrom}
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* for any token owned by the caller.
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*
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* Requirements:
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*
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* - The `operator` cannot be the caller.
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*
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* Emits an {ApprovalForAll} event.
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*/
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function setApprovalForAll(address operator, bool _approved) external;
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/**
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* @dev Returns the account approved for `tokenId` token.
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*
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* Requirements:
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*
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* - `tokenId` must exist.
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*/
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function getApproved(uint256 tokenId) external view returns (address operator);
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/**
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* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
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*
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* See {setApprovalForAll}.
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*/
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function isApprovedForAll(address owner, address operator) external view returns (bool);
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// =============================================================
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// IERC721Metadata
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// =============================================================
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/**
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* @dev Returns the token collection name.
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*/
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function name() external view returns (string memory);
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/**
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* @dev Returns the token collection symbol.
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*/
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function symbol() external view returns (string memory);
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/**
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* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
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*/
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function tokenURI(uint256 tokenId) external view returns (string memory);
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// =============================================================
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// IERC2309
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// =============================================================
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/**
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* @dev Emitted when tokens in `fromTokenId` to `toTokenId`
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* (inclusive) is transferred from `from` to `to`, as defined in the
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* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
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*
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* See {_mintERC2309} for more details.
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*/
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event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
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}
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