|
// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. |
|
|
|
/**
|
|
|
|
_ _ _ ___
|
|
| | | | | |__ \
|
|
| |__ ___| | | ___ __ _ _ __ ___ _ __ ) |
|
|
| '_ \ / _ \ | |/ _ \ / _` | '_ \ / _ \| '_ \ / /
|
|
| | | | __/ | | (_) | | (_| | | | | (_) | | | | / /_
|
|
|_| |_|\___|_|_|\___/ \__,_|_| |_|\___/|_| |_| |____|
|
|
|
|
|
|
|
|
*/
|
|
// SPDX-License-Identifier: MIT
|
|
//Developer Info: anon duh
|
|
|
|
|
|
|
|
// File: @openzeppelin/contracts/utils/Strings.sol
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
/**
|
|
* @dev String operations.
|
|
*/
|
|
library Strings {
|
|
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
|
|
|
|
/**
|
|
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
|
|
*/
|
|
function toString(uint256 value) internal pure returns (string memory) {
|
|
// Inspired by OraclizeAPI's implementation - MIT licence
|
|
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
|
|
|
|
if (value == 0) {
|
|
return "0";
|
|
}
|
|
uint256 temp = value;
|
|
uint256 digits;
|
|
while (temp != 0) {
|
|
digits++;
|
|
temp /= 10;
|
|
}
|
|
bytes memory buffer = new bytes(digits);
|
|
while (value != 0) {
|
|
digits -= 1;
|
|
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
|
|
value /= 10;
|
|
}
|
|
return string(buffer);
|
|
}
|
|
|
|
/**
|
|
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
|
|
*/
|
|
function toHexString(uint256 value) internal pure returns (string memory) {
|
|
if (value == 0) {
|
|
return "0x00";
|
|
}
|
|
uint256 temp = value;
|
|
uint256 length = 0;
|
|
while (temp != 0) {
|
|
length++;
|
|
temp >>= 8;
|
|
}
|
|
return toHexString(value, length);
|
|
}
|
|
|
|
/**
|
|
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
|
|
*/
|
|
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
|
|
bytes memory buffer = new bytes(2 * length + 2);
|
|
buffer[0] = "0";
|
|
buffer[1] = "x";
|
|
for (uint256 i = 2 * length + 1; i > 1; --i) {
|
|
buffer[i] = _HEX_SYMBOLS[value & 0xf];
|
|
value >>= 4;
|
|
}
|
|
require(value == 0, "Strings: hex length insufficient");
|
|
return string(buffer);
|
|
}
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/utils/Context.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
/**
|
|
* @dev Provides information about the current execution context, including the
|
|
* sender of the transaction and its data. While these are generally available
|
|
* via msg.sender and msg.data, they should not be accessed in such a direct
|
|
* manner, since when dealing with meta-transactions the account sending and
|
|
* paying for execution may not be the actual sender (as far as an application
|
|
* is concerned).
|
|
*
|
|
* This contract is only required for intermediate, library-like contracts.
|
|
*/
|
|
abstract contract Context {
|
|
function _msgSender() internal view virtual returns (address) {
|
|
return msg.sender;
|
|
}
|
|
|
|
function _msgData() internal view virtual returns (bytes calldata) {
|
|
return msg.data;
|
|
}
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/utils/Address.sol
|
|
|
|
|
|
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
|
|
|
|
pragma solidity ^0.8.1;
|
|
|
|
/**
|
|
* @dev Collection of functions related to the address type
|
|
*/
|
|
library Address {
|
|
/**
|
|
* @dev Returns true if `account` is a contract.
|
|
*
|
|
* [IMPORTANT]
|
|
* ====
|
|
* It is unsafe to assume that an address for which this function returns
|
|
* false is an externally-owned account (EOA) and not a contract.
|
|
*
|
|
* Among others, `isContract` will return false for the following
|
|
* types of addresses:
|
|
*
|
|
* - an externally-owned account
|
|
* - a contract in construction
|
|
* - an address where a contract will be created
|
|
* - an address where a contract lived, but was destroyed
|
|
* ====
|
|
*
|
|
* [IMPORTANT]
|
|
* ====
|
|
* You shouldn't rely on `isContract` to protect against flash loan attacks!
|
|
*
|
|
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
|
|
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
|
|
* constructor.
|
|
* ====
|
|
*/
|
|
function isContract(address account) internal view returns (bool) {
|
|
// This method relies on extcodesize/address.code.length, which returns 0
|
|
// for contracts in construction, since the code is only stored at the end
|
|
// of the constructor execution.
|
|
|
|
return account.code.length > 0;
|
|
}
|
|
|
|
/**
|
|
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
|
|
* `recipient`, forwarding all available gas and reverting on errors.
|
|
*
|
|
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
|
|
* of certain opcodes, possibly making contracts go over the 2300 gas limit
|
|
* imposed by `transfer`, making them unable to receive funds via
|
|
* `transfer`. {sendValue} removes this limitation.
|
|
*
|
|
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
|
|
*
|
|
* IMPORTANT: because control is transferred to `recipient`, care must be
|
|
* taken to not create reentrancy vulnerabilities. Consider using
|
|
* {ReentrancyGuard} or the
|
|
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html
|
|
*/
|
|
function sendValue(address payable recipient, uint256 amount) internal {
|
|
require(address(this).balance >= amount, "Address: insufficient balance");
|
|
|
|
(bool success, ) = recipient.call{value: amount}("");
|
|
require(success, "Address: unable to send value, recipient may have reverted");
|
|
}
|
|
|
|
/**
|
|
* @dev Performs a Solidity function call using a low level `call`. A
|
|
* plain `call` is an unsafe replacement for a function call: use this
|
|
* function instead.
|
|
*
|
|
* If `target` reverts with a revert reason, it is bubbled up by this
|
|
* function (like regular Solidity function calls).
|
|
*
|
|
* Returns the raw returned data. To convert to the expected return value,
|
|
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `target` must be a contract.
|
|
* - calling `target` with `data` must not revert.
|
|
*
|
|
* _Available since v3.1._
|
|
*/
|
|
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
|
|
return functionCall(target, data, "Address: low-level call failed");
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
|
|
* `errorMessage` as a fallback revert reason when `target` reverts.
|
|
*
|
|
* _Available since v3.1._
|
|
*/
|
|
function functionCall(
|
|
address target,
|
|
bytes memory data,
|
|
string memory errorMessage
|
|
) internal returns (bytes memory) {
|
|
return functionCallWithValue(target, data, 0, errorMessage);
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
|
|
* but also transferring `value` wei to `target`.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - the calling contract must have an ETH balance of at least `value`.
|
|
* - the called Solidity function must be `payable`.
|
|
*
|
|
* _Available since v3.1._
|
|
*/
|
|
function functionCallWithValue(
|
|
address target,
|
|
bytes memory data,
|
|
uint256 value
|
|
) internal returns (bytes memory) {
|
|
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
|
|
* with `errorMessage` as a fallback revert reason when `target` reverts.
|
|
*
|
|
* _Available since v3.1._
|
|
*/
|
|
function functionCallWithValue(
|
|
address target,
|
|
bytes memory data,
|
|
uint256 value,
|
|
string memory errorMessage
|
|
) internal returns (bytes memory) {
|
|
require(address(this).balance >= value, "Address: insufficient balance for call");
|
|
require(isContract(target), "Address: call to non-contract");
|
|
|
|
(bool success, bytes memory returndata) = target.call{value: value}(data);
|
|
return verifyCallResult(success, returndata, errorMessage);
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
|
|
* but performing a static call.
|
|
*
|
|
* _Available since v3.3._
|
|
*/
|
|
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
|
|
return functionStaticCall(target, data, "Address: low-level static call failed");
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
|
|
* but performing a static call.
|
|
*
|
|
* _Available since v3.3._
|
|
*/
|
|
function functionStaticCall(
|
|
address target,
|
|
bytes memory data,
|
|
string memory errorMessage
|
|
) internal view returns (bytes memory) {
|
|
require(isContract(target), "Address: static call to non-contract");
|
|
|
|
(bool success, bytes memory returndata) = target.staticcall(data);
|
|
return verifyCallResult(success, returndata, errorMessage);
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
|
|
* but performing a delegate call.
|
|
*
|
|
* _Available since v3.4._
|
|
*/
|
|
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
|
|
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
|
|
}
|
|
|
|
/**
|
|
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
|
|
* but performing a delegate call.
|
|
*
|
|
* _Available since v3.4._
|
|
*/
|
|
function functionDelegateCall(
|
|
address target,
|
|
bytes memory data,
|
|
string memory errorMessage
|
|
) internal returns (bytes memory) {
|
|
require(isContract(target), "Address: delegate call to non-contract");
|
|
|
|
(bool success, bytes memory returndata) = target.delegatecall(data);
|
|
return verifyCallResult(success, returndata, errorMessage);
|
|
}
|
|
|
|
/**
|
|
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
|
|
* revert reason using the provided one.
|
|
*
|
|
* _Available since v4.3._
|
|
*/
|
|
function verifyCallResult(
|
|
bool success,
|
|
bytes memory returndata,
|
|
string memory errorMessage
|
|
) internal pure returns (bytes memory) {
|
|
if (success) {
|
|
return returndata;
|
|
} else {
|
|
// Look for revert reason and bubble it up if present
|
|
if (returndata.length > 0) {
|
|
// The easiest way to bubble the revert reason is using memory via assembly
|
|
|
|
assembly {
|
|
let returndata_size := mload(returndata)
|
|
revert(add(32, returndata), returndata_size)
|
|
}
|
|
} else {
|
|
revert(errorMessage);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
/**
|
|
* @title ERC721 token receiver interface
|
|
* @dev Interface for any contract that wants to support safeTransfers
|
|
* from ERC721 asset contracts.
|
|
*/
|
|
interface IERC721Receiver {
|
|
/**
|
|
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
|
|
* by `operator` from `from`, this function is called.
|
|
*
|
|
* It must return its Solidity selector to confirm the token transfer.
|
|
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
|
|
*
|
|
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
|
|
*/
|
|
function onERC721Received(
|
|
address operator,
|
|
address from,
|
|
uint256 tokenId,
|
|
bytes calldata data
|
|
) external returns (bytes4);
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
/**
|
|
* @dev Interface of the ERC165 standard, as defined in the
|
|
* https://eips.ethereum.org/EIPS/eip-165[EIP].
|
|
*
|
|
* Implementers can declare support of contract interfaces, which can then be
|
|
* queried by others ({ERC165Checker}).
|
|
*
|
|
* For an implementation, see {ERC165}.
|
|
*/
|
|
interface IERC165 {
|
|
/**
|
|
* @dev Returns true if this contract implements the interface defined by
|
|
* `interfaceId`. See the corresponding
|
|
* https://eips.ethereum.org/EIPS/eip-165
|
|
* to learn more about how these ids are created.
|
|
*
|
|
* This function call must use less than 30 000 gas.
|
|
*/
|
|
function supportsInterface(bytes4 interfaceId) external view returns (bool);
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
|
|
/**
|
|
* @dev Implementation of the {IERC165} interface.
|
|
*
|
|
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
|
|
* for the additional interface id that will be supported. For example:
|
|
*
|
|
* ```solidity
|
|
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
|
|
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
|
|
* }
|
|
* ```
|
|
*
|
|
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
|
|
*/
|
|
abstract contract ERC165 is IERC165 {
|
|
/**
|
|
* @dev See {IERC165-supportsInterface}.
|
|
*/
|
|
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
|
|
return interfaceId == type(IERC165).interfaceId;
|
|
}
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
|
|
/**
|
|
* @dev Required interface of an ERC721 compliant contract.
|
|
*/
|
|
interface IERC721 is IERC165 {
|
|
/**
|
|
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
|
|
*/
|
|
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
|
|
|
|
/**
|
|
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
|
|
*/
|
|
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
|
|
|
|
/**
|
|
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
|
|
*/
|
|
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
|
|
|
|
/**
|
|
* @dev Returns the number of tokens in ``owner``'s account.
|
|
*/
|
|
function balanceOf(address owner) external view returns (uint256 balance);
|
|
|
|
/**
|
|
* @dev Returns the owner of the `tokenId` token.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `tokenId` must exist.
|
|
*/
|
|
function ownerOf(uint256 tokenId) external view returns (address owner);
|
|
|
|
/**
|
|
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
|
|
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `from` cannot be the zero address.
|
|
* - `to` cannot be the zero address.
|
|
* - `tokenId` token must exist and be owned by `from`.
|
|
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
|
|
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function safeTransferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId
|
|
) external;
|
|
|
|
/**
|
|
* @dev Transfers `tokenId` token from `from` to `to`.
|
|
*
|
|
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `from` cannot be the zero address.
|
|
* - `to` cannot be the zero address.
|
|
* - `tokenId` token must be owned by `from`.
|
|
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function transferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId
|
|
) external;
|
|
|
|
/**
|
|
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
|
|
* The approval is cleared when the token is transferred.
|
|
*
|
|
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - The caller must own the token or be an approved operator.
|
|
* - `tokenId` must exist.
|
|
*
|
|
* Emits an {Approval} event.
|
|
*/
|
|
function approve(address to, uint256 tokenId) external;
|
|
|
|
/**
|
|
* @dev Returns the account approved for `tokenId` token.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `tokenId` must exist.
|
|
*/
|
|
function getApproved(uint256 tokenId) external view returns (address operator);
|
|
|
|
/**
|
|
* @dev Approve or remove `operator` as an operator for the caller.
|
|
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - The `operator` cannot be the caller.
|
|
*
|
|
* Emits an {ApprovalForAll} event.
|
|
*/
|
|
function setApprovalForAll(address operator, bool _approved) external;
|
|
|
|
/**
|
|
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
|
|
*
|
|
* See {setApprovalForAll}
|
|
*/
|
|
function isApprovedForAll(address owner, address operator) external view returns (bool);
|
|
|
|
/**
|
|
* @dev Safely transfers `tokenId` token from `from` to `to`.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `from` cannot be the zero address.
|
|
* - `to` cannot be the zero address.
|
|
* - `tokenId` token must exist and be owned by `from`.
|
|
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
|
|
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function safeTransferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId,
|
|
bytes calldata data
|
|
) external;
|
|
}
|
|
|
|
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
|
|
|
|
|
|
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
|
|
/**
|
|
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
|
|
* @dev See https://eips.ethereum.org/EIPS/eip-721
|
|
*/
|
|
interface IERC721Metadata is IERC721 {
|
|
/**
|
|
* @dev Returns the token collection name.
|
|
*/
|
|
function name() external view returns (string memory);
|
|
|
|
/**
|
|
* @dev Returns the token collection symbol.
|
|
*/
|
|
function symbol() external view returns (string memory);
|
|
|
|
/**
|
|
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
|
|
*/
|
|
function tokenURI(uint256 tokenId) external view returns (string memory);
|
|
}
|
|
|
|
// File: contracts/new.sol
|
|
|
|
|
|
|
|
|
|
pragma solidity ^0.8.4;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
error ApprovalCallerNotOwnerNorApproved();
|
|
error ApprovalQueryForNonexistentToken();
|
|
error ApproveToCaller();
|
|
error ApprovalToCurrentOwner();
|
|
error BalanceQueryForZeroAddress();
|
|
error MintToZeroAddress();
|
|
error MintZeroQuantity();
|
|
error OwnerQueryForNonexistentToken();
|
|
error TransferCallerNotOwnerNorApproved();
|
|
error TransferFromIncorrectOwner();
|
|
error TransferToNonERC721ReceiverImplementer();
|
|
error TransferToZeroAddress();
|
|
error URIQueryForNonexistentToken();
|
|
|
|
/**
|
|
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
|
|
* the Metadata extension. Built to optimize for lower gas during batch mints.
|
|
*
|
|
* Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
|
|
*
|
|
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
|
|
*
|
|
* Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
|
|
*/
|
|
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata {
|
|
using Address for address;
|
|
using Strings for uint256;
|
|
|
|
// Compiler will pack this into a single 256bit word.
|
|
struct TokenOwnership {
|
|
// The address of the owner.
|
|
address addr;
|
|
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
|
|
uint64 startTimestamp;
|
|
// Whether the token has been burned.
|
|
bool burned;
|
|
}
|
|
|
|
// Compiler will pack this into a single 256bit word.
|
|
struct AddressData {
|
|
// Realistically, 2**64-1 is more than enough.
|
|
uint64 balance;
|
|
// Keeps track of mint count with minimal overhead for tokenomics.
|
|
uint64 numberMinted;
|
|
// Keeps track of burn count with minimal overhead for tokenomics.
|
|
uint64 numberBurned;
|
|
// For miscellaneous variable(s) pertaining to the address
|
|
// (e.g. number of whitelist mint slots used).
|
|
// If there are multiple variables, please pack them into a uint64.
|
|
uint64 aux;
|
|
}
|
|
|
|
// The tokenId of the next token to be minted.
|
|
uint256 internal _currentIndex;
|
|
|
|
// The number of tokens burned.
|
|
uint256 internal _burnCounter;
|
|
|
|
// Token name
|
|
string private _name;
|
|
|
|
// Token symbol
|
|
string private _symbol;
|
|
|
|
// Mapping from token ID to ownership details
|
|
// An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.
|
|
mapping(uint256 => TokenOwnership) internal _ownerships;
|
|
|
|
// Mapping owner address to address data
|
|
mapping(address => AddressData) private _addressData;
|
|
|
|
// Mapping from token ID to approved address
|
|
mapping(uint256 => address) private _tokenApprovals;
|
|
|
|
// Mapping from owner to operator approvals
|
|
mapping(address => mapping(address => bool)) private _operatorApprovals;
|
|
|
|
constructor(string memory name_, string memory symbol_) {
|
|
_name = name_;
|
|
_symbol = symbol_;
|
|
_currentIndex = _startTokenId();
|
|
}
|
|
|
|
/**
|
|
* To change the starting tokenId, please override this function.
|
|
*/
|
|
function _startTokenId() internal view virtual returns (uint256) {
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
|
|
*/
|
|
function totalSupply() public view returns (uint256) {
|
|
// Counter underflow is impossible as _burnCounter cannot be incremented
|
|
// more than _currentIndex - _startTokenId() times
|
|
unchecked {
|
|
return _currentIndex - _burnCounter - _startTokenId();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the total amount of tokens minted in the contract.
|
|
*/
|
|
function _totalMinted() internal view returns (uint256) {
|
|
// Counter underflow is impossible as _currentIndex does not decrement,
|
|
// and it is initialized to _startTokenId()
|
|
unchecked {
|
|
return _currentIndex - _startTokenId();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC165-supportsInterface}.
|
|
*/
|
|
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
|
|
return
|
|
interfaceId == type(IERC721).interfaceId ||
|
|
interfaceId == type(IERC721Metadata).interfaceId ||
|
|
super.supportsInterface(interfaceId);
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-balanceOf}.
|
|
*/
|
|
function balanceOf(address owner) public view override returns (uint256) {
|
|
if (owner == address(0)) revert BalanceQueryForZeroAddress();
|
|
return uint256(_addressData[owner].balance);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of tokens minted by `owner`.
|
|
*/
|
|
function _numberMinted(address owner) internal view returns (uint256) {
|
|
return uint256(_addressData[owner].numberMinted);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of tokens burned by or on behalf of `owner`.
|
|
*/
|
|
function _numberBurned(address owner) internal view returns (uint256) {
|
|
return uint256(_addressData[owner].numberBurned);
|
|
}
|
|
|
|
/**
|
|
* Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
|
|
*/
|
|
function _getAux(address owner) internal view returns (uint64) {
|
|
return _addressData[owner].aux;
|
|
}
|
|
|
|
/**
|
|
* Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
|
|
* If there are multiple variables, please pack them into a uint64.
|
|
*/
|
|
function _setAux(address owner, uint64 aux) internal {
|
|
_addressData[owner].aux = aux;
|
|
}
|
|
|
|
/**
|
|
* Gas spent here starts off proportional to the maximum mint batch size.
|
|
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
|
|
*/
|
|
function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
|
|
uint256 curr = tokenId;
|
|
|
|
unchecked {
|
|
if (_startTokenId() <= curr && curr < _currentIndex) {
|
|
TokenOwnership memory ownership = _ownerships[curr];
|
|
if (!ownership.burned) {
|
|
if (ownership.addr != address(0)) {
|
|
return ownership;
|
|
}
|
|
// Invariant:
|
|
// There will always be an ownership that has an address and is not burned
|
|
// before an ownership that does not have an address and is not burned.
|
|
// Hence, curr will not underflow.
|
|
while (true) {
|
|
curr--;
|
|
ownership = _ownerships[curr];
|
|
if (ownership.addr != address(0)) {
|
|
return ownership;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
revert OwnerQueryForNonexistentToken();
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-ownerOf}.
|
|
*/
|
|
function ownerOf(uint256 tokenId) public view override returns (address) {
|
|
return _ownershipOf(tokenId).addr;
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721Metadata-name}.
|
|
*/
|
|
function name() public view virtual override returns (string memory) {
|
|
return _name;
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721Metadata-symbol}.
|
|
*/
|
|
function symbol() public view virtual override returns (string memory) {
|
|
return _symbol;
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721Metadata-tokenURI}.
|
|
*/
|
|
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
|
|
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
|
|
|
|
string memory baseURI = _baseURI();
|
|
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
|
|
}
|
|
|
|
/**
|
|
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
|
|
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
|
|
* by default, can be overriden in child contracts.
|
|
*/
|
|
function _baseURI() internal view virtual returns (string memory) {
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-approve}.
|
|
*/
|
|
function approve(address to, uint256 tokenId) public override {
|
|
address owner = ERC721A.ownerOf(tokenId);
|
|
if (to == owner) revert ApprovalToCurrentOwner();
|
|
|
|
if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
|
|
revert ApprovalCallerNotOwnerNorApproved();
|
|
}
|
|
|
|
_approve(to, tokenId, owner);
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-getApproved}.
|
|
*/
|
|
function getApproved(uint256 tokenId) public view override returns (address) {
|
|
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
|
|
|
|
return _tokenApprovals[tokenId];
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-setApprovalForAll}.
|
|
*/
|
|
function setApprovalForAll(address operator, bool approved) public virtual override {
|
|
if (operator == _msgSender()) revert ApproveToCaller();
|
|
|
|
_operatorApprovals[_msgSender()][operator] = approved;
|
|
emit ApprovalForAll(_msgSender(), operator, approved);
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-isApprovedForAll}.
|
|
*/
|
|
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
|
|
return _operatorApprovals[owner][operator];
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-transferFrom}.
|
|
*/
|
|
function transferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId
|
|
) public virtual override {
|
|
_transfer(from, to, tokenId);
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-safeTransferFrom}.
|
|
*/
|
|
function safeTransferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId
|
|
) public virtual override {
|
|
safeTransferFrom(from, to, tokenId, '');
|
|
}
|
|
|
|
/**
|
|
* @dev See {IERC721-safeTransferFrom}.
|
|
*/
|
|
function safeTransferFrom(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId,
|
|
bytes memory _data
|
|
) public virtual override {
|
|
_transfer(from, to, tokenId);
|
|
if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) {
|
|
revert TransferToNonERC721ReceiverImplementer();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @dev Returns whether `tokenId` exists.
|
|
*
|
|
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
|
|
*
|
|
* Tokens start existing when they are minted (`_mint`),
|
|
*/
|
|
function _exists(uint256 tokenId) internal view returns (bool) {
|
|
return _startTokenId() <= tokenId && tokenId < _currentIndex &&
|
|
!_ownerships[tokenId].burned;
|
|
}
|
|
|
|
function _safeMint(address to, uint256 quantity) internal {
|
|
_safeMint(to, quantity, '');
|
|
}
|
|
|
|
/**
|
|
* @dev Safely mints `quantity` tokens and transfers them to `to`.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
|
|
* - `quantity` must be greater than 0.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function _safeMint(
|
|
address to,
|
|
uint256 quantity,
|
|
bytes memory _data
|
|
) internal {
|
|
_mint(to, quantity, _data, true);
|
|
}
|
|
|
|
/**
|
|
* @dev Mints `quantity` tokens and transfers them to `to`.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `to` cannot be the zero address.
|
|
* - `quantity` must be greater than 0.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function _mint(
|
|
address to,
|
|
uint256 quantity,
|
|
bytes memory _data,
|
|
bool safe
|
|
) internal {
|
|
uint256 startTokenId = _currentIndex;
|
|
if (to == address(0)) revert MintToZeroAddress();
|
|
if (quantity == 0) revert MintZeroQuantity();
|
|
|
|
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
|
|
|
|
// Overflows are incredibly unrealistic.
|
|
// balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
|
|
// updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
|
|
unchecked {
|
|
_addressData[to].balance += uint64(quantity);
|
|
_addressData[to].numberMinted += uint64(quantity);
|
|
|
|
_ownerships[startTokenId].addr = to;
|
|
_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
|
|
|
|
uint256 updatedIndex = startTokenId;
|
|
uint256 end = updatedIndex + quantity;
|
|
|
|
if (safe && to.isContract()) {
|
|
do {
|
|
emit Transfer(address(0), to, updatedIndex);
|
|
if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
|
|
revert TransferToNonERC721ReceiverImplementer();
|
|
}
|
|
} while (updatedIndex != end);
|
|
// Reentrancy protection
|
|
if (_currentIndex != startTokenId) revert();
|
|
} else {
|
|
do {
|
|
emit Transfer(address(0), to, updatedIndex++);
|
|
} while (updatedIndex != end);
|
|
}
|
|
_currentIndex = updatedIndex;
|
|
}
|
|
_afterTokenTransfers(address(0), to, startTokenId, quantity);
|
|
}
|
|
|
|
/**
|
|
* @dev Transfers `tokenId` from `from` to `to`.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `to` cannot be the zero address.
|
|
* - `tokenId` token must be owned by `from`.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function _transfer(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId
|
|
) private {
|
|
TokenOwnership memory prevOwnership = _ownershipOf(tokenId);
|
|
|
|
if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
|
|
|
|
bool isApprovedOrOwner = (_msgSender() == from ||
|
|
isApprovedForAll(from, _msgSender()) ||
|
|
getApproved(tokenId) == _msgSender());
|
|
|
|
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
|
|
if (to == address(0)) revert TransferToZeroAddress();
|
|
|
|
_beforeTokenTransfers(from, to, tokenId, 1);
|
|
|
|
// Clear approvals from the previous owner
|
|
_approve(address(0), tokenId, from);
|
|
|
|
// Underflow of the sender's balance is impossible because we check for
|
|
// ownership above and the recipient's balance can't realistically overflow.
|
|
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
|
|
unchecked {
|
|
_addressData[from].balance -= 1;
|
|
_addressData[to].balance += 1;
|
|
|
|
TokenOwnership storage currSlot = _ownerships[tokenId];
|
|
currSlot.addr = to;
|
|
currSlot.startTimestamp = uint64(block.timestamp);
|
|
|
|
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
|
|
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
|
|
uint256 nextTokenId = tokenId + 1;
|
|
TokenOwnership storage nextSlot = _ownerships[nextTokenId];
|
|
if (nextSlot.addr == address(0)) {
|
|
// This will suffice for checking _exists(nextTokenId),
|
|
// as a burned slot cannot contain the zero address.
|
|
if (nextTokenId != _currentIndex) {
|
|
nextSlot.addr = from;
|
|
nextSlot.startTimestamp = prevOwnership.startTimestamp;
|
|
}
|
|
}
|
|
}
|
|
|
|
emit Transfer(from, to, tokenId);
|
|
_afterTokenTransfers(from, to, tokenId, 1);
|
|
}
|
|
|
|
/**
|
|
* @dev This is equivalent to _burn(tokenId, false)
|
|
*/
|
|
function _burn(uint256 tokenId) internal virtual {
|
|
_burn(tokenId, false);
|
|
}
|
|
|
|
/**
|
|
* @dev Destroys `tokenId`.
|
|
* The approval is cleared when the token is burned.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - `tokenId` must exist.
|
|
*
|
|
* Emits a {Transfer} event.
|
|
*/
|
|
function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
|
|
TokenOwnership memory prevOwnership = _ownershipOf(tokenId);
|
|
|
|
address from = prevOwnership.addr;
|
|
|
|
if (approvalCheck) {
|
|
bool isApprovedOrOwner = (_msgSender() == from ||
|
|
isApprovedForAll(from, _msgSender()) ||
|
|
getApproved(tokenId) == _msgSender());
|
|
|
|
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
|
|
}
|
|
|
|
_beforeTokenTransfers(from, address(0), tokenId, 1);
|
|
|
|
// Clear approvals from the previous owner
|
|
_approve(address(0), tokenId, from);
|
|
|
|
// Underflow of the sender's balance is impossible because we check for
|
|
// ownership above and the recipient's balance can't realistically overflow.
|
|
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
|
|
unchecked {
|
|
AddressData storage addressData = _addressData[from];
|
|
addressData.balance -= 1;
|
|
addressData.numberBurned += 1;
|
|
|
|
// Keep track of who burned the token, and the timestamp of burning.
|
|
TokenOwnership storage currSlot = _ownerships[tokenId];
|
|
currSlot.addr = from;
|
|
currSlot.startTimestamp = uint64(block.timestamp);
|
|
currSlot.burned = true;
|
|
|
|
// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
|
|
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
|
|
uint256 nextTokenId = tokenId + 1;
|
|
TokenOwnership storage nextSlot = _ownerships[nextTokenId];
|
|
if (nextSlot.addr == address(0)) {
|
|
// This will suffice for checking _exists(nextTokenId),
|
|
// as a burned slot cannot contain the zero address.
|
|
if (nextTokenId != _currentIndex) {
|
|
nextSlot.addr = from;
|
|
nextSlot.startTimestamp = prevOwnership.startTimestamp;
|
|
}
|
|
}
|
|
}
|
|
|
|
emit Transfer(from, address(0), tokenId);
|
|
_afterTokenTransfers(from, address(0), tokenId, 1);
|
|
|
|
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
|
|
unchecked {
|
|
_burnCounter++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @dev Approve `to` to operate on `tokenId`
|
|
*
|
|
* Emits a {Approval} event.
|
|
*/
|
|
function _approve(
|
|
address to,
|
|
uint256 tokenId,
|
|
address owner
|
|
) private {
|
|
_tokenApprovals[tokenId] = to;
|
|
emit Approval(owner, to, tokenId);
|
|
}
|
|
|
|
/**
|
|
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
|
|
*
|
|
* @param from address representing the previous owner of the given token ID
|
|
* @param to target address that will receive the tokens
|
|
* @param tokenId uint256 ID of the token to be transferred
|
|
* @param _data bytes optional data to send along with the call
|
|
* @return bool whether the call correctly returned the expected magic value
|
|
*/
|
|
function _checkContractOnERC721Received(
|
|
address from,
|
|
address to,
|
|
uint256 tokenId,
|
|
bytes memory _data
|
|
) private returns (bool) {
|
|
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
|
|
return retval == IERC721Receiver(to).onERC721Received.selector;
|
|
} catch (bytes memory reason) {
|
|
if (reason.length == 0) {
|
|
revert TransferToNonERC721ReceiverImplementer();
|
|
} else {
|
|
assembly {
|
|
revert(add(32, reason), mload(reason))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
|
|
* And also called before burning one token.
|
|
*
|
|
* startTokenId - the first token id to be transferred
|
|
* quantity - the amount to be transferred
|
|
*
|
|
* Calling conditions:
|
|
*
|
|
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
|
|
* transferred to `to`.
|
|
* - When `from` is zero, `tokenId` will be minted for `to`.
|
|
* - When `to` is zero, `tokenId` will be burned by `from`.
|
|
* - `from` and `to` are never both zero.
|
|
*/
|
|
function _beforeTokenTransfers(
|
|
address from,
|
|
address to,
|
|
uint256 startTokenId,
|
|
uint256 quantity
|
|
) internal virtual {}
|
|
|
|
/**
|
|
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
|
|
* minting.
|
|
* And also called after one token has been burned.
|
|
*
|
|
* startTokenId - the first token id to be transferred
|
|
* quantity - the amount to be transferred
|
|
*
|
|
* Calling conditions:
|
|
*
|
|
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
|
|
* transferred to `to`.
|
|
* - When `from` is zero, `tokenId` has been minted for `to`.
|
|
* - When `to` is zero, `tokenId` has been burned by `from`.
|
|
* - `from` and `to` are never both zero.
|
|
*/
|
|
function _afterTokenTransfers(
|
|
address from,
|
|
address to,
|
|
uint256 startTokenId,
|
|
uint256 quantity
|
|
) internal virtual {}
|
|
}
|
|
|
|
abstract contract Ownable is Context {
|
|
address private _owner;
|
|
|
|
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
|
|
|
|
/**
|
|
* @dev Initializes the contract setting the deployer as the initial owner.
|
|
*/
|
|
constructor() {
|
|
_transferOwnership(_msgSender());
|
|
}
|
|
|
|
/**
|
|
* @dev Returns the address of the current owner.
|
|
*/
|
|
function owner() public view virtual returns (address) {
|
|
return _owner;
|
|
}
|
|
|
|
/**
|
|
* @dev Throws if called by any account other than the owner.
|
|
*/
|
|
modifier onlyOwner() {
|
|
require(owner() == _msgSender() , "Ownable: caller is not the owner");
|
|
_;
|
|
}
|
|
|
|
/**
|
|
* @dev Leaves the contract without owner. It will not be possible to call
|
|
* `onlyOwner` functions anymore. Can only be called by the current owner.
|
|
*
|
|
* NOTE: Renouncing ownership will leave the contract without an owner,
|
|
* thereby removing any functionality that is only available to the owner.
|
|
*/
|
|
function renounceOwnership() public virtual onlyOwner {
|
|
_transferOwnership(address(0));
|
|
}
|
|
|
|
/**
|
|
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
|
* Can only be called by the current owner.
|
|
*/
|
|
function transferOwnership(address newOwner) public virtual onlyOwner {
|
|
require(newOwner != address(0), "Ownable: new owner is the zero address");
|
|
_transferOwnership(newOwner);
|
|
}
|
|
|
|
/**
|
|
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
|
* Internal function without access restriction.
|
|
*/
|
|
function _transferOwnership(address newOwner) internal virtual {
|
|
address oldOwner = _owner;
|
|
_owner = newOwner;
|
|
emit OwnershipTransferred(oldOwner, newOwner);
|
|
}
|
|
}
|
|
pragma solidity ^0.8.13;
|
|
|
|
interface IOperatorFilterRegistry {
|
|
function isOperatorAllowed(address registrant, address operator) external view returns (bool);
|
|
function register(address registrant) external;
|
|
function registerAndSubscribe(address registrant, address subscription) external;
|
|
function registerAndCopyEntries(address registrant, address registrantToCopy) external;
|
|
function updateOperator(address registrant, address operator, bool filtered) external;
|
|
function updateOperators(address registrant, address[] calldata operators, bool filtered) external;
|
|
function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;
|
|
function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;
|
|
function subscribe(address registrant, address registrantToSubscribe) external;
|
|
function unsubscribe(address registrant, bool copyExistingEntries) external;
|
|
function subscriptionOf(address addr) external returns (address registrant);
|
|
function subscribers(address registrant) external returns (address[] memory);
|
|
function subscriberAt(address registrant, uint256 index) external returns (address);
|
|
function copyEntriesOf(address registrant, address registrantToCopy) external;
|
|
function isOperatorFiltered(address registrant, address operator) external returns (bool);
|
|
function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);
|
|
function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);
|
|
function filteredOperators(address addr) external returns (address[] memory);
|
|
function filteredCodeHashes(address addr) external returns (bytes32[] memory);
|
|
function filteredOperatorAt(address registrant, uint256 index) external returns (address);
|
|
function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);
|
|
function isRegistered(address addr) external returns (bool);
|
|
function codeHashOf(address addr) external returns (bytes32);
|
|
}
|
|
pragma solidity ^0.8.13;
|
|
|
|
|
|
|
|
abstract contract OperatorFilterer {
|
|
error OperatorNotAllowed(address operator);
|
|
|
|
IOperatorFilterRegistry constant operatorFilterRegistry =
|
|
IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);
|
|
|
|
constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {
|
|
// If an inheriting token contract is deployed to a network without the registry deployed, the modifier
|
|
// will not revert, but the contract will need to be registered with the registry once it is deployed in
|
|
// order for the modifier to filter addresses.
|
|
if (address(operatorFilterRegistry).code.length > 0) {
|
|
if (subscribe) {
|
|
operatorFilterRegistry.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);
|
|
} else {
|
|
if (subscriptionOrRegistrantToCopy != address(0)) {
|
|
operatorFilterRegistry.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);
|
|
} else {
|
|
operatorFilterRegistry.register(address(this));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
modifier onlyAllowedOperator(address from) virtual {
|
|
// Check registry code length to facilitate testing in environments without a deployed registry.
|
|
if (address(operatorFilterRegistry).code.length > 0) {
|
|
// Allow spending tokens from addresses with balance
|
|
// Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred
|
|
// from an EOA.
|
|
if (from == msg.sender) {
|
|
_;
|
|
return;
|
|
}
|
|
if (
|
|
!(
|
|
operatorFilterRegistry.isOperatorAllowed(address(this), msg.sender)
|
|
&& operatorFilterRegistry.isOperatorAllowed(address(this), from)
|
|
)
|
|
) {
|
|
revert OperatorNotAllowed(msg.sender);
|
|
}
|
|
}
|
|
_;
|
|
}
|
|
}
|
|
pragma solidity ^0.8.13;
|
|
|
|
|
|
|
|
abstract contract DefaultOperatorFilterer is OperatorFilterer {
|
|
address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);
|
|
|
|
constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}
|
|
}
|
|
pragma solidity ^0.8.7;
|
|
|
|
contract Abstraction2byanon is ERC721A, DefaultOperatorFilterer , Ownable {
|
|
using Strings for uint256;
|
|
|
|
|
|
string private uriPrefix ;
|
|
string private uriSuffix = ".json";
|
|
string public hiddenURL;
|
|
|
|
|
|
|
|
|
|
uint256 public cost = 0 ether;
|
|
|
|
|
|
|
|
uint16 public maxSupply = 400;
|
|
uint8 public maxMintAmountPerTx = 1;
|
|
uint8 public maxFreeMintAmountPerWallet = 1;
|
|
|
|
|
|
bool public paused = true;
|
|
bool public reveal =false;
|
|
|
|
mapping (address => uint8) public NFTPerPublicAddress;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
constructor() ERC721A("Abstraction 2 by anon", "A2BYA") {
|
|
}
|
|
|
|
|
|
|
|
|
|
function mint(uint8 _mintAmount) external payable {
|
|
uint16 totalSupply = uint16(totalSupply());
|
|
uint8 nft = NFTPerPublicAddress[msg.sender];
|
|
require(totalSupply + _mintAmount <= maxSupply, "Exceeds max supply.");
|
|
require(_mintAmount + nft <= maxMintAmountPerTx, "Exceeds max per transaction.");
|
|
|
|
require(!paused, "The contract is paused!");
|
|
|
|
if(nft >= maxFreeMintAmountPerWallet)
|
|
{
|
|
require(msg.value >= cost * _mintAmount, "Insufficient funds!");
|
|
}
|
|
else {
|
|
uint8 costAmount = _mintAmount + nft;
|
|
if(costAmount > maxFreeMintAmountPerWallet)
|
|
{
|
|
costAmount = costAmount - maxFreeMintAmountPerWallet;
|
|
require(msg.value >= cost * costAmount, "Insufficient funds!");
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
_safeMint(msg.sender , _mintAmount);
|
|
|
|
NFTPerPublicAddress[msg.sender] = _mintAmount + nft;
|
|
|
|
delete totalSupply;
|
|
delete _mintAmount;
|
|
}
|
|
|
|
function Reserve(uint16 _mintAmount, address _receiver) external onlyOwner {
|
|
uint16 totalSupply = uint16(totalSupply());
|
|
require(totalSupply + _mintAmount <= maxSupply, "Exceeds max supply.");
|
|
_safeMint(_receiver , _mintAmount);
|
|
delete _mintAmount;
|
|
delete _receiver;
|
|
delete totalSupply;
|
|
}
|
|
|
|
function Airdrop(uint8 _amountPerAddress, address[] calldata addresses) external onlyOwner {
|
|
uint16 totalSupply = uint16(totalSupply());
|
|
uint totalAmount = _amountPerAddress * addresses.length;
|
|
require(totalSupply + totalAmount <= maxSupply, "Exceeds max supply.");
|
|
for (uint256 i = 0; i < addresses.length; i++) {
|
|
_safeMint(addresses[i], _amountPerAddress);
|
|
}
|
|
|
|
delete _amountPerAddress;
|
|
delete totalSupply;
|
|
}
|
|
|
|
|
|
|
|
function setMaxSupply(uint16 _maxSupply) external onlyOwner {
|
|
maxSupply = _maxSupply;
|
|
}
|
|
|
|
|
|
|
|
|
|
function tokenURI(uint256 _tokenId)
|
|
public
|
|
view
|
|
virtual
|
|
override
|
|
returns (string memory)
|
|
{
|
|
require(
|
|
_exists(_tokenId),
|
|
"ERC721Metadata: URI query for nonexistent token"
|
|
);
|
|
|
|
|
|
if ( reveal == false)
|
|
{
|
|
return hiddenURL;
|
|
}
|
|
|
|
|
|
string memory currentBaseURI = _baseURI();
|
|
return bytes(currentBaseURI).length > 0
|
|
? string(abi.encodePacked(currentBaseURI, _tokenId.toString() ,uriSuffix))
|
|
: "";
|
|
}
|
|
|
|
|
|
|
|
|
|
function setFreeMaxLimitPerAddress(uint8 _limit) external onlyOwner{
|
|
maxFreeMintAmountPerWallet = _limit;
|
|
delete _limit;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function setUriPrefix(string memory _uriPrefix) external onlyOwner {
|
|
uriPrefix = _uriPrefix;
|
|
}
|
|
function setHiddenUri(string memory _uriPrefix) external onlyOwner {
|
|
hiddenURL = _uriPrefix;
|
|
}
|
|
|
|
|
|
function setPaused() external onlyOwner {
|
|
paused = !paused;
|
|
|
|
}
|
|
|
|
function setCost(uint _cost) external onlyOwner{
|
|
cost = _cost;
|
|
|
|
}
|
|
|
|
function setRevealed() external onlyOwner{
|
|
reveal = !reveal;
|
|
}
|
|
|
|
function setMaxMintAmountPerTx(uint8 _maxtx) external onlyOwner{
|
|
maxMintAmountPerTx = _maxtx;
|
|
|
|
}
|
|
|
|
|
|
|
|
function withdraw() external onlyOwner {
|
|
uint _balance = address(this).balance;
|
|
payable(msg.sender).transfer(_balance );
|
|
|
|
}
|
|
|
|
|
|
function _baseURI() internal view override returns (string memory) {
|
|
return uriPrefix;
|
|
}
|
|
|
|
function transferFrom(address from, address to, uint256 tokenId) public override onlyAllowedOperator(from) {
|
|
super.transferFrom(from, to, tokenId);
|
|
}
|
|
|
|
function safeTransferFrom(address from, address to, uint256 tokenId) public override onlyAllowedOperator(from) {
|
|
super.safeTransferFrom(from, to, tokenId);
|
|
}
|
|
|
|
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data)
|
|
public
|
|
override
|
|
onlyAllowedOperator(from)
|
|
{
|
|
super.safeTransferFrom(from, to, tokenId, data);
|
|
}
|
|
} |
