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Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- PRONFTMultiStaking
- Optimization enabled
- true
- Compiler version
- v0.8.16+commit.07a7930e
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2023-01-18T03:34:46.533954Z
Constructor Arguments
000000000000000000000000136993b9bea254cc103d08a8965867e123622bd0
Arg [0] (address) : 0x136993b9bea254cc103d08a8965867e123622bd0
Contract source code
// File @openzeppelin/contracts/utils/introspection/[email protected]
// SPDX-License-Identifier: MIT
// 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#how-interfaces-are-identified[EIP section]
* 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/token/ERC721/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (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`.
*
* 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;
/**
* @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 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 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 the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @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);
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// File @openzeppelin/contracts/utils/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (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#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
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#abi-encoding-and-decoding-functions[`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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File @openzeppelin/contracts/token/ERC20/utils/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File @openzeppelin/contracts/utils/structs/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*
* [WARNING]
* ====
* Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable.
* See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
*
* In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet.
* ====
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping(bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
if (lastIndex != toDeleteIndex) {
bytes32 lastValue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastValue;
// Update the index for the moved value
set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
return _values(set._inner);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
}
// File @openzeppelin/contracts/utils/[email protected]
// 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/token/ERC721/[email protected]
// OpenZeppelin Contracts (last updated v4.6.0) (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 `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File @openzeppelin/contracts/token/ERC721/utils/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC721/utils/ERC721Holder.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC721Receiver} interface.
*
* Accepts all token transfers.
* Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
*/
contract ERC721Holder is IERC721Receiver {
/**
* @dev See {IERC721Receiver-onERC721Received}.
*
* Always returns `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
}
// File @openzeppelin/contracts/access/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
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 Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
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);
}
}
// File @openzeppelin/contracts/security/[email protected]
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// File @openzeppelin/contracts/token/ERC721/extensions/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// File @openzeppelin/contracts/utils/structs/[email protected]
// OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableMap.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* The following map types are supported:
*
* - `uint256 -> address` (`UintToAddressMap`) since v3.0.0
* - `address -> uint256` (`AddressToUintMap`) since v4.6.0
* - `bytes32 -> bytes32` (`Bytes32ToBytes32`) since v4.6.0
* - `uint256 -> uint256` (`UintToUintMap`) since v4.7.0
* - `bytes32 -> uint256` (`Bytes32ToUintMap`) since v4.7.0
*
* [WARNING]
* ====
* Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable.
* See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
*
* In order to clean an EnumerableMap, you can either remove all elements one by one or create a fresh instance using an array of EnumerableMap.
* ====
*/
library EnumerableMap {
using EnumerableSet for EnumerableSet.Bytes32Set;
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct Bytes32ToBytes32Map {
// Storage of keys
EnumerableSet.Bytes32Set _keys;
mapping(bytes32 => bytes32) _values;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
Bytes32ToBytes32Map storage map,
bytes32 key,
bytes32 value
) internal returns (bool) {
map._values[key] = value;
return map._keys.add(key);
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(Bytes32ToBytes32Map storage map, bytes32 key) internal returns (bool) {
delete map._values[key];
return map._keys.remove(key);
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool) {
return map._keys.contains(key);
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function length(Bytes32ToBytes32Map storage map) internal view returns (uint256) {
return map._keys.length();
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32ToBytes32Map storage map, uint256 index) internal view returns (bytes32, bytes32) {
bytes32 key = map._keys.at(index);
return (key, map._values[key]);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function tryGet(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool, bytes32) {
bytes32 value = map._values[key];
if (value == bytes32(0)) {
return (contains(map, key), bytes32(0));
} else {
return (true, value);
}
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bytes32) {
bytes32 value = map._values[key];
require(value != 0 || contains(map, key), "EnumerableMap: nonexistent key");
return value;
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function get(
Bytes32ToBytes32Map storage map,
bytes32 key,
string memory errorMessage
) internal view returns (bytes32) {
bytes32 value = map._values[key];
require(value != 0 || contains(map, key), errorMessage);
return value;
}
// UintToUintMap
struct UintToUintMap {
Bytes32ToBytes32Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
UintToUintMap storage map,
uint256 key,
uint256 value
) internal returns (bool) {
return set(map._inner, bytes32(key), bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToUintMap storage map, uint256 key) internal returns (bool) {
return remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToUintMap storage map, uint256 key) internal view returns (bool) {
return contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToUintMap storage map) internal view returns (uint256) {
return length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToUintMap storage map, uint256 index) internal view returns (uint256, uint256) {
(bytes32 key, bytes32 value) = at(map._inner, index);
return (uint256(key), uint256(value));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function tryGet(UintToUintMap storage map, uint256 key) internal view returns (bool, uint256) {
(bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
return (success, uint256(value));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToUintMap storage map, uint256 key) internal view returns (uint256) {
return uint256(get(map._inner, bytes32(key)));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(
UintToUintMap storage map,
uint256 key,
string memory errorMessage
) internal view returns (uint256) {
return uint256(get(map._inner, bytes32(key), errorMessage));
}
// UintToAddressMap
struct UintToAddressMap {
Bytes32ToBytes32Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
UintToAddressMap storage map,
uint256 key,
address value
) internal returns (bool) {
return set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(
UintToAddressMap storage map,
uint256 key,
string memory errorMessage
) internal view returns (address) {
return address(uint160(uint256(get(map._inner, bytes32(key), errorMessage))));
}
// AddressToUintMap
struct AddressToUintMap {
Bytes32ToBytes32Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
AddressToUintMap storage map,
address key,
uint256 value
) internal returns (bool) {
return set(map._inner, bytes32(uint256(uint160(key))), bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(AddressToUintMap storage map, address key) internal returns (bool) {
return remove(map._inner, bytes32(uint256(uint160(key))));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(AddressToUintMap storage map, address key) internal view returns (bool) {
return contains(map._inner, bytes32(uint256(uint160(key))));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(AddressToUintMap storage map) internal view returns (uint256) {
return length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressToUintMap storage map, uint256 index) internal view returns (address, uint256) {
(bytes32 key, bytes32 value) = at(map._inner, index);
return (address(uint160(uint256(key))), uint256(value));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function tryGet(AddressToUintMap storage map, address key) internal view returns (bool, uint256) {
(bool success, bytes32 value) = tryGet(map._inner, bytes32(uint256(uint160(key))));
return (success, uint256(value));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(AddressToUintMap storage map, address key) internal view returns (uint256) {
return uint256(get(map._inner, bytes32(uint256(uint160(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(
AddressToUintMap storage map,
address key,
string memory errorMessage
) internal view returns (uint256) {
return uint256(get(map._inner, bytes32(uint256(uint160(key))), errorMessage));
}
// Bytes32ToUintMap
struct Bytes32ToUintMap {
Bytes32ToBytes32Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
Bytes32ToUintMap storage map,
bytes32 key,
uint256 value
) internal returns (bool) {
return set(map._inner, key, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(Bytes32ToUintMap storage map, bytes32 key) internal returns (bool) {
return remove(map._inner, key);
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool) {
return contains(map._inner, key);
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(Bytes32ToUintMap storage map) internal view returns (uint256) {
return length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32ToUintMap storage map, uint256 index) internal view returns (bytes32, uint256) {
(bytes32 key, bytes32 value) = at(map._inner, index);
return (key, uint256(value));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function tryGet(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool, uint256) {
(bool success, bytes32 value) = tryGet(map._inner, key);
return (success, uint256(value));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(Bytes32ToUintMap storage map, bytes32 key) internal view returns (uint256) {
return uint256(get(map._inner, key));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(
Bytes32ToUintMap storage map,
bytes32 key,
string memory errorMessage
) internal view returns (uint256) {
return uint256(get(map._inner, key, errorMessage));
}
}
// File contracts/IOracleNFTWeight.sol
pragma solidity ^0.8.16;
interface IOracleNFTWeight {
function oracleNFTWeight(uint256 tokenId)
external
view
returns (uint256 weight);
}
// File contracts/Staking.sol
pragma solidity ^0.8.16;
contract PRONFTMultiStaking is Ownable, ReentrancyGuard, ERC721Holder {
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.AddressToUintMap;
using SafeERC20 for IERC20;
event OnTokenLock(
address indexed owner,
uint256 amount,
uint256 unlockTime,
uint8 lockMode
);
event OnTokenUnlock(address user);
event OnLockWithdrawal(address user, uint256 amount, uint8 mode);
event OnLockAmountIncreased(address user, uint256 amount);
event OnLockDurationIncreased(address user, uint256 newUnlockTime);
uint256 public PRECISION_FACTOR = 10**8;
// The staked token
address public constant xOracle =
0x5795377c85e0fdF6370fae1B74Fe03b930C4a892;
address public constant oracle = 0xD7565b16b65376e2Ddb6c71E7971c7185A7Ff3Ff;
address public constant wsgb = 0x02f0826ef6aD107Cfc861152B32B52fD11BaB9ED;
address public constant proToken =
0xf810576A68C3731875BDe07404BE815b16fC0B4e;
address public constant deadAddress =
0x000000000000000000000000000000000000dEaD;
uint256[] public LOCK_TIME_MULTIPLIER = [10, 15, 70, 150, 310];
uint256[] public LOCK_TIME_DURATION = [
0,
30 days,
90 days,
180 days,
365 days
];
address public oracleNFT = 0xCdB019C0990c033724DA55f5A04bE6fd6ec1809d;
uint256 public minProAmount = 1111 * 10**18;
uint256 public minxOracleAmount = 100 * 10**18;
uint256 private constant PERCENT_FACTOR = 1e4;
address public oracleWeight;
struct TokenLock {
uint256 totalWeight;
uint256 unlockTime;
uint256 nftWeight;
uint256 lockedAmount; // How many staked tokens the user has provided,
uint256 lockMode; // duration
uint256 xOracleLock;
}
struct Reward {
address token;
uint256 amount;
}
address public distributor;
modifier onlyDistributorOrOwner() {
require(
msg.sender == distributor || msg.sender == owner(),
"caller is not distributor or owner"
);
_;
}
mapping(address => TokenLock) public userLocks;
mapping(address => EnumerableSet.UintSet) private userNFTBalances;
uint256 public totalPoolWeight;
uint256 public totalXOracleLocked;
uint256 public totalNFTWeight;
bool public enableEmergency;
uint256[] public proAmountForLock = new uint256[](5);
EnumerableMap.AddressToUintMap private accRewardPerWeight;
EnumerableMap.AddressToUintMap private totalReward;
mapping(address => EnumerableMap.AddressToUintMap) private userDebtRewards;
mapping(address => EnumerableMap.AddressToUintMap) private userTotalReward;
EnumerableSet.UintSet private rewardHistoryTimes;
mapping(uint256 => Reward) private rewardHistory;
receive() external payable {}
fallback() external payable {}
constructor(address _oracleWeight) {
require(_oracleWeight != address(0), "wrong weighter");
oracleWeight = _oracleWeight;
}
function totalStakedNFTCount() public view returns (uint256 tokenCount) {
tokenCount = IERC721Enumerable(oracleNFT).balanceOf(address(this));
}
function totalStakedNFT() external view returns (uint256[] memory) {
uint256 tokenCount = IERC721Enumerable(oracleNFT).balanceOf(
address(this)
);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = IERC721Enumerable(oracleNFT)
.tokenOfOwnerByIndex(address(this), index);
}
return result;
}
}
function userWalletNFT(address _owner)
external
view
returns (uint256[] memory)
{
uint256 tokenCount = IERC721Enumerable(oracleNFT).balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = IERC721Enumerable(oracleNFT)
.tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
function userStakedNFT(address _owner)
public
view
returns (uint256[] memory)
{
return userNFTBalances[_owner].values();
}
function userStakedNFTCount(address _owner) public view returns (uint256) {
return userNFTBalances[_owner].length();
}
function isStaked(address account, uint256 tokenId)
public
view
returns (bool)
{
return userNFTBalances[account].contains(tokenId);
}
function distributeReward(address token, uint256 _amount)
public
payable
onlyDistributorOrOwner
{
require(_amount > 0, "zero reward");
if (token != address(0)) {
uint256 beforeBalance = IERC20(token).balanceOf(address(this));
IERC20(token).safeTransferFrom(
address(msg.sender),
address(this),
_amount
);
uint256 afterBalance = IERC20(token).balanceOf(address(this));
_amount = afterBalance - beforeBalance;
} else {
_amount = msg.value;
}
if (totalPoolWeight > 0) {
(, uint256 lastValue) = accRewardPerWeight.tryGet(token);
uint256 newValue = lastValue +
(_amount * PRECISION_FACTOR) /
totalPoolWeight;
accRewardPerWeight.set(token, newValue);
}
(, uint256 lastTotalValue) = totalReward.tryGet(token);
uint256 newTotalValue = lastTotalValue + _amount;
totalReward.set(token, newTotalValue);
rewardHistoryTimes.add(block.timestamp);
rewardHistory[block.timestamp] = Reward({
token: token,
amount: _amount
});
}
function backToPool(address token, uint256 _amount) private {
if (totalPoolWeight > 0) {
(, uint256 lastValue) = accRewardPerWeight.tryGet(token);
uint256 newValue = lastValue +
(_amount * PRECISION_FACTOR) /
totalPoolWeight;
accRewardPerWeight.set(token, newValue);
}
(, uint256 lastTotalValue) = totalReward.tryGet(token);
uint256 newTotalValue = lastTotalValue + _amount;
totalReward.set(token, newTotalValue);
rewardHistoryTimes.add(block.timestamp);
rewardHistory[block.timestamp] = Reward({
token: token,
amount: _amount
});
}
function distributedUserTotalReward(address user)
external
view
returns (Reward[] memory rewards)
{
uint256 rewardCount = userTotalReward[user].length();
rewards = new Reward[](rewardCount);
for (uint256 i; i < rewardCount; ) {
(address token, uint256 distributed) = userTotalReward[user].at(i);
rewards[i] = Reward({token: token, amount: distributed});
unchecked {
i++;
}
}
}
function distributedTotalReward()
external
view
returns (Reward[] memory rewards)
{
uint256 rewardCount = totalReward.length();
rewards = new Reward[](rewardCount);
for (uint256 i; i < rewardCount; ) {
(address token, uint256 distributed) = totalReward.at(i);
rewards[i] = Reward({token: token, amount: distributed});
unchecked {
i++;
}
}
}
function updateDebt() private {
TokenLock storage lock = userLocks[msg.sender];
if (lock.totalWeight > 0) {
uint256 rewardCount = accRewardPerWeight.length();
for (uint256 i; i < rewardCount; ) {
(address token, uint256 acc) = accRewardPerWeight.at(i);
uint256 newDebt = (lock.totalWeight * acc) / PRECISION_FACTOR;
userDebtRewards[msg.sender].set(token, newDebt);
unchecked {
i++;
}
}
}
}
function pendingRewards(address user)
external
view
returns (Reward[] memory rewards)
{
TokenLock memory lock = userLocks[user];
if (lock.totalWeight > 0) {
uint256 rewardCount = accRewardPerWeight.length();
rewards = new Reward[](rewardCount);
for (uint256 i; i < rewardCount; ) {
(address token, uint256 acc) = accRewardPerWeight.at(i);
(, uint256 debtReward) = userDebtRewards[user].tryGet(token);
uint256 reward = (lock.totalWeight * acc) /
PRECISION_FACTOR -
debtReward;
rewards[i] = Reward({token: token, amount: reward});
unchecked {
i++;
}
}
}
}
function harvest() public {
TokenLock storage lock = userLocks[msg.sender];
if (lock.totalWeight > 0) {
uint256 rewardCount = accRewardPerWeight.length();
for (uint256 i; i < rewardCount; ) {
(address token, uint256 acc) = accRewardPerWeight.at(i);
(, uint256 debtReward) = userDebtRewards[msg.sender].tryGet(
token
);
uint256 reward = (lock.totalWeight * acc) /
PRECISION_FACTOR -
debtReward;
if (reward > 0) {
if (token == address(0)) {
transferETH(msg.sender, reward);
} else {
IERC20(token).safeTransfer(msg.sender, reward);
}
(, uint256 lastTotalValue) = userTotalReward[msg.sender]
.tryGet(token);
uint256 newTotalValue = lastTotalValue + reward;
userTotalReward[msg.sender].set(token, newTotalValue);
}
uint256 newDebt = (lock.totalWeight * acc) / PRECISION_FACTOR;
userDebtRewards[msg.sender].set(token, newDebt);
unchecked {
i++;
}
}
}
}
function rewardBackToPool() private {
TokenLock storage lock = userLocks[msg.sender];
if (lock.totalWeight > 0) {
uint256 rewardCount = accRewardPerWeight.length();
for (uint256 i; i < rewardCount; ) {
(address token, uint256 acc) = accRewardPerWeight.at(i);
(, uint256 debtReward) = userDebtRewards[msg.sender].tryGet(
token
);
uint256 reward = (lock.totalWeight * acc) /
PRECISION_FACTOR -
debtReward;
if (reward > 0) {
if (totalPoolWeight > 0) {
(, uint256 lastValue) = accRewardPerWeight.tryGet(
token
);
uint256 newValue = lastValue +
(reward * PRECISION_FACTOR) /
totalPoolWeight;
accRewardPerWeight.set(token, newValue);
}
(, uint256 lastTotalValue) = totalReward.tryGet(token);
uint256 newTotalValue = lastTotalValue + reward;
totalReward.set(token, newTotalValue);
rewardHistoryTimes.add(block.timestamp + i);
rewardHistory[block.timestamp + i] = Reward({
token: token,
amount: reward
});
}
uint256 newDebt = (lock.totalWeight * acc) / PRECISION_FACTOR;
userDebtRewards[msg.sender].set(token, newDebt);
unchecked {
i++;
}
}
}
}
function depositOracleBar(uint256 amount) private {
require(amount > 0, "zero amount");
require(
IERC20(xOracle).balanceOf(msg.sender) >= amount,
"small xOracle balance to stake"
);
require(
IERC20(xOracle).allowance(msg.sender, address(this)) >= amount,
"small xOracle allowance to stake"
);
uint256 beforeBalance = IERC20(xOracle).balanceOf(address(this));
IERC20(xOracle).safeTransferFrom(
address(msg.sender),
address(this),
amount
);
uint256 afterBalance = IERC20(xOracle).balanceOf(address(this));
amount = afterBalance - beforeBalance;
TokenLock storage lock = userLocks[msg.sender];
lock.xOracleLock += amount;
totalXOracleLocked += amount;
}
function withdrawOracleBar(uint256 amount) private {
require(amount > 0, "zero amount");
TokenLock storage lock = userLocks[msg.sender];
// require(lock.xOracleLock >= amount, "small lock amount");
uint8 mode = 0;
if (block.timestamp < lock.unlockTime) {
mode = 1;
}
uint256 tokenFee = (amount * 50 * mode) / 100;
uint256 amountWithdraw = amount - tokenFee;
IERC20(xOracle).safeTransfer(msg.sender, amountWithdraw);
if (mode == 1) {
uint256 burnAmount = (tokenFee * 50) / 100;
IERC20(xOracle).safeTransfer(deadAddress, burnAmount);
backToPool(xOracle, tokenFee - burnAmount);
}
lock.xOracleLock -= amount;
totalXOracleLocked -= amount;
}
function batchNFTStake(uint256[] calldata tokenIds) public nonReentrant {
require(
IERC721(oracleNFT).isApprovedForAll(_msgSender(), address(this)),
"Not approve nft to staker address"
);
uint256 count = tokenIds.length;
require(count > 0, "zero stake nft");
TokenLock storage lock = userLocks[msg.sender];
if (lock.lockMode != 0) {
if (lock.lockedAmount > 0) {
require(lock.lockedAmount >= minProAmount, "small pro staked");
depositOracleBar(minxOracleAmount * count);
}
}
uint256 newWeight = lock.nftWeight;
uint256 addedWeight = 0;
for (uint256 i = 0; i < count; ) {
uint256 tokenId = tokenIds[i];
require(
IERC721(oracleNFT).ownerOf(tokenId) == _msgSender(),
"wrong owner"
);
IERC721(oracleNFT).safeTransferFrom(
_msgSender(),
address(this),
tokenId
);
userNFTBalances[_msgSender()].add(tokenId);
uint256 oracleNFTWeight = IOracleNFTWeight(oracleWeight)
.oracleNFTWeight(tokenId) * 10**18;
newWeight += oracleNFTWeight;
// addedWeight +=
// (oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
// 10;
if (lock.lockedAmount > 0) {
addedWeight +=
(oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
10;
} else {
addedWeight += oracleNFTWeight;
}
unchecked {
i++;
}
}
harvest();
lock.nftWeight = newWeight;
lock.totalWeight = addedWeight + lock.totalWeight;
totalPoolWeight += addedWeight;
updateDebt();
}
function NFTStake(uint256 tokenId) public nonReentrant {
require(
IERC721(oracleNFT).ownerOf(tokenId) == _msgSender(),
"wrong owner"
);
require(
IERC721(oracleNFT).isApprovedForAll(_msgSender(), address(this)) ||
IERC721(oracleNFT).getApproved(tokenId) == address(this),
"not approved"
);
TokenLock storage lock = userLocks[msg.sender];
if (lock.lockMode != 0) {
if (lock.lockedAmount > 0) {
require(lock.lockedAmount >= minProAmount, "small pro staked");
depositOracleBar(minxOracleAmount);
}
}
IERC721(oracleNFT).safeTransferFrom(
_msgSender(),
address(this),
tokenId
);
harvest();
userNFTBalances[_msgSender()].add(tokenId);
uint256 oldWeight = lock.nftWeight;
uint256 oracleNFTWeight = IOracleNFTWeight(oracleWeight)
.oracleNFTWeight(tokenId) * 10**18;
uint256 newWeight = oldWeight + oracleNFTWeight;
lock.nftWeight = newWeight;
uint256 addedWeight;
if (lock.lockedAmount > 0) {
addedWeight =
(oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
10;
} else {
addedWeight = oracleNFTWeight;
}
lock.totalWeight += addedWeight;
totalPoolWeight += addedWeight;
updateDebt();
}
function NFTWithdraw(uint256 tokenId) public nonReentrant {
require(isStaked(_msgSender(), tokenId), "Not staked this nft");
IERC721(oracleNFT).safeTransferFrom(
address(this),
_msgSender(),
tokenId
);
TokenLock storage lock = userLocks[msg.sender];
if (lock.xOracleLock >= minxOracleAmount) {
withdrawOracleBar(minxOracleAmount);
}else if(lock.xOracleLock > 0){
withdrawOracleBar(lock.xOracleLock);
}
userNFTBalances[_msgSender()].remove(tokenId);
harvest();
uint256 oldWeight = lock.nftWeight;
uint256 oracleNFTWeight = IOracleNFTWeight(oracleWeight)
.oracleNFTWeight(tokenId) * 10**18;
uint256 newWeight = oldWeight - oracleNFTWeight;
lock.nftWeight = newWeight;
uint256 reduceddWeight;
// (oracleNFTWeight *
// LOCK_TIME_MULTIPLIER[lock.lockMode]) / 10;
if (lock.lockedAmount > 0) {
reduceddWeight =
(oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
10;
} else {
reduceddWeight = oracleNFTWeight;
}
lock.totalWeight -= reduceddWeight;
totalPoolWeight -= reduceddWeight;
updateDebt();
if (lock.lockedAmount == 0) {
if (userStakedNFTCount(msg.sender) == 0) {
delete userLocks[msg.sender];
}
emit OnTokenUnlock(msg.sender);
}
}
function batchNFTWithdraw(uint256[] calldata tokenIds) public nonReentrant {
uint256 count = tokenIds.length;
require(count > 0, "zero stake nft");
TokenLock storage lock = userLocks[msg.sender];
uint256 newWeight = lock.nftWeight;
uint256 reduceddWeight = 0;
for (uint256 i = 0; i < count; ) {
uint256 tokenId = tokenIds[i];
require(isStaked(_msgSender(), tokenId), "Not staked this nft");
IERC721(oracleNFT).safeTransferFrom(
address(this),
_msgSender(),
tokenId
);
userNFTBalances[_msgSender()].remove(tokenId);
uint256 oracleNFTWeight = IOracleNFTWeight(oracleWeight)
.oracleNFTWeight(tokenId) * 10**18;
newWeight -= oracleNFTWeight;
// reduceddWeight +=
// (oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
// 10;
if (lock.lockedAmount > 0) {
reduceddWeight +=
(oracleNFTWeight * LOCK_TIME_MULTIPLIER[lock.lockMode]) /
10;
} else {
reduceddWeight += oracleNFTWeight;
}
unchecked {
i++;
}
}
harvest();
if (lock.xOracleLock >= minxOracleAmount * count) {
withdrawOracleBar(minxOracleAmount * count);
}else if(lock.xOracleLock > 0){
withdrawOracleBar(lock.xOracleLock);
}
lock.nftWeight = newWeight;
lock.totalWeight -= reduceddWeight;
totalPoolWeight -= reduceddWeight;
updateDebt();
if (lock.lockedAmount == 0) {
if (userStakedNFTCount(msg.sender) == 0) {
delete userLocks[msg.sender];
}
emit OnTokenUnlock(msg.sender);
}
}
function calculateUserNFTWeight(address _account)
public
view
returns (uint256 weight)
{
uint256 tokenCount = userNFTBalances[_account].length();
if (tokenCount == 0) {
return 0;
} else {
uint256[] memory staked = userStakedNFT(_account);
uint256 i;
for (i; i < tokenCount; ) {
weight +=
IOracleNFTWeight(oracleWeight).oracleNFTWeight(staked[i]) *
10**18;
unchecked {
i++;
}
}
}
}
/**
* @notice locks pro token until specified time
* @param amount amount of tokens to lock
* @param lockMode unix time in seconds after that tokens can be withdrawn
*/
function deposit(uint256 amount, uint8 lockMode)
external
payable
nonReentrant
{
require(amount > 0, "ZERO AMOUNT");
require(
IERC20(proToken).balanceOf(msg.sender) >= amount,
"small PRO balance to stake"
);
require(
IERC20(proToken).allowance(msg.sender, address(this)) >= amount,
"small PRO allowance to stake"
);
require(lockMode >= 0 && lockMode < 5, "Invalid lock mode");
TokenLock storage lock = userLocks[msg.sender];
require(lock.lockedAmount == 0, "already deposit");
uint256 beforeBalance = IERC20(proToken).balanceOf(address(this));
IERC20(proToken).safeTransferFrom(
address(msg.sender),
address(this),
amount
);
uint256 afterBalance = IERC20(proToken).balanceOf(address(this));
amount = afterBalance - beforeBalance;
uint256 unlockTime = block.timestamp + LOCK_TIME_DURATION[lockMode];
uint256 addeddWeight = (amount * LOCK_TIME_MULTIPLIER[lockMode]) / 10;
if (lock.nftWeight > 0) {
addeddWeight +=
(lock.nftWeight * (LOCK_TIME_MULTIPLIER[lockMode] - 10)) /
10;
if (lockMode > 0) {
require(amount >= minProAmount, "small pro amount for nft");
uint256 count = userStakedNFTCount(msg.sender);
if (count > 0 && minxOracleAmount * count > lock.xOracleLock) {
depositOracleBar(
minxOracleAmount * count - lock.xOracleLock
);
}
}
}
harvest();
totalPoolWeight += addeddWeight;
proAmountForLock[lockMode] += amount;
lock.totalWeight += addeddWeight;
lock.lockedAmount += amount;
if(lock.unlockTime < unlockTime){
lock.unlockTime = unlockTime;
}
lock.lockMode = lockMode;
updateDebt();
emit OnTokenLock(msg.sender, amount, unlockTime, lockMode);
}
function extendLockTime(uint256 lockMode) external nonReentrant {
require(lockMode > 0 && lockMode < 5, "Invalid lock mode");
TokenLock storage lock = userLocks[msg.sender];
require(lock.lockedAmount > 0, "no lock");
require(lock.lockMode < lockMode, "NOT INCREASING UNLOCK TIME");
uint256 count = userStakedNFTCount(msg.sender);
if (count > 0) {
if (lock.xOracleLock == 0) {
depositOracleBar(minxOracleAmount * count);
}
require(lock.lockedAmount >= minProAmount, "small pro staked");
}
uint256 unlockTime = lock.unlockTime +
LOCK_TIME_DURATION[lockMode] -
LOCK_TIME_DURATION[lock.lockMode];
uint256 addeddWeight = ((lock.lockedAmount + lock.nftWeight) *
(LOCK_TIME_MULTIPLIER[lockMode] -
LOCK_TIME_MULTIPLIER[lock.lockMode])) / 10;
harvest();
totalPoolWeight += addeddWeight;
proAmountForLock[lock.lockMode] -= lock.lockedAmount;
proAmountForLock[lockMode] += lock.lockedAmount;
lock.totalWeight += addeddWeight;
lock.lockMode = lockMode;
lock.unlockTime = unlockTime;
updateDebt();
emit OnLockDurationIncreased(msg.sender, unlockTime);
}
function shortenLockTime(uint256 lockMode) external nonReentrant {
require(lockMode >= 0 && lockMode < 5, "Invalid lock mode");
TokenLock storage lock = userLocks[msg.sender];
require(lock.lockMode > lockMode, "NOT DECREASING UNLOCK TIME");
require(lock.unlockTime < block.timestamp, "original lock duration");
uint256 unlockTime = block.timestamp + LOCK_TIME_DURATION[lockMode];
uint256 reducedWeight = ((lock.lockedAmount + lock.nftWeight) *
(LOCK_TIME_MULTIPLIER[lock.lockMode] -
LOCK_TIME_MULTIPLIER[lockMode])) / 10;
harvest();
totalPoolWeight -= reducedWeight;
proAmountForLock[lock.lockMode] -= lock.lockedAmount;
proAmountForLock[lockMode] += lock.lockedAmount;
lock.totalWeight -= reducedWeight;
lock.lockMode = lockMode;
lock.unlockTime = unlockTime;
updateDebt();
}
/**
* @notice add tokens to an existing lock
* @param amount tokens amount to add
*/
function increaseLockAmount(uint256 amount) external payable nonReentrant {
require(amount > 0, "ZERO AMOUNT");
TokenLock storage lock = userLocks[msg.sender];
require(lock.lockedAmount > 0, "no original lock");
uint256 beforeBalance = IERC20(proToken).balanceOf(address(this));
IERC20(proToken).safeTransferFrom(
address(msg.sender),
address(this),
amount
);
uint256 afterBalance = IERC20(proToken).balanceOf(address(this));
amount = afterBalance - beforeBalance;
harvest();
uint256 addeddWeight = ((amount) *
LOCK_TIME_MULTIPLIER[lock.lockMode]) / 10;
totalPoolWeight += addeddWeight;
proAmountForLock[lock.lockMode] += amount;
lock.totalWeight += addeddWeight;
lock.lockedAmount += amount;
updateDebt();
emit OnLockAmountIncreased(msg.sender, amount);
}
/**
* @notice withdraw specified amount of tokens from lock. Current time must be greater than unlock time
* @param amount amount of tokens to withdraw
*/
function withdraw(uint256 amount) public nonReentrant {
TokenLock storage lock = userLocks[msg.sender];
require(lock.lockedAmount >= amount, "more withdraw");
require(amount > 0, "zero amount");
uint8 mode = 0;
if (block.timestamp < lock.unlockTime) {
mode = 1;
rewardBackToPool();
} else {
harvest();
}
uint256 tokenFee = (amount * 50 * mode) / 100;
uint256 amountWithdraw = amount - tokenFee;
if (amountWithdraw > 0) {
IERC20(proToken).safeTransfer(msg.sender, amountWithdraw);
}
if (mode == 1) {
uint256 burnAmount = (tokenFee * 5) / 10;
IERC20(proToken).safeTransfer(deadAddress, burnAmount);
backToPool(proToken, tokenFee - burnAmount);
}
proAmountForLock[lock.lockMode] -= amount;
lock.lockedAmount -= amount;
if (lock.lockedAmount == 0) {
totalPoolWeight =
totalPoolWeight +
lock.nftWeight -
lock.totalWeight;
if (userStakedNFTCount(msg.sender) == 0) {
delete userLocks[msg.sender];
} else {
// lock.lockMode = 0;
lock.totalWeight = lock.nftWeight;
}
} else {
uint256 reducedWeight = (amount *
LOCK_TIME_MULTIPLIER[lock.lockMode]) / 10;
totalPoolWeight -= reducedWeight;
lock.totalWeight -= reducedWeight;
}
updateDebt();
if (lock.lockedAmount == 0) {
emit OnTokenUnlock(msg.sender);
} else {
emit OnLockWithdrawal(msg.sender, amount, mode);
}
}
function transferETH(address recipient, uint256 amount) private {
(bool res, ) = payable(recipient).call{value: amount}("");
require(res, "ETH TRANSFER FAILED");
}
function totalProLocked() public view returns (uint256 amount) {
for (uint256 i; i < proAmountForLock.length; ) {
amount += proAmountForLock[i];
unchecked {
i++;
}
}
}
function setOracleWeight(address _oracleWeight) external onlyOwner {
require(_oracleWeight != address(0), "wrong address");
oracleWeight = _oracleWeight;
}
function setMinxOracle(uint256 _min) external onlyOwner {
minxOracleAmount = _min;
}
function setMinPro(uint256 _min) external onlyOwner {
minProAmount = _min;
}
function setEmergency(bool _flag) external onlyOwner {
enableEmergency = _flag;
}
function setDistributor(address _distributor) external onlyOwner {
distributor = _distributor;
}
function emergencyWithdraw() public nonReentrant {
require(enableEmergency, "not emergency feature");
// TokenLock storage lock = userLocks[msg.sender];
uint256[] memory staked = userStakedNFT(msg.sender);
uint256 count = staked.length;
for (uint256 i = 0; i < count; ) {
uint256 tokenId = staked[i];
IERC721(oracleNFT).safeTransferFrom(
address(this),
_msgSender(),
tokenId
);
userNFTBalances[_msgSender()].remove(tokenId);
unchecked {
i++;
}
}
}
function getGlobalStatus()
external
view
returns (
uint256 poolSize,
uint256 proAmount,
uint256 nftCount,
uint256 xOracleAmount
)
{
poolSize = totalPoolWeight;
proAmount = totalProLocked();
nftCount = totalStakedNFTCount();
xOracleAmount = totalXOracleLocked;
}
function getRewardHistory()
external
view
returns (uint256[] memory times, Reward[] memory rewards)
{
uint256 rewardCount = rewardHistoryTimes.length();
times = new uint256[](rewardCount);
rewards = new Reward[](rewardCount);
for (uint256 i; i < rewardCount; ) {
uint256 rewardTime = rewardHistoryTimes.at(i);
rewards[i] = rewardHistory[rewardTime];
times[i] = rewardTime;
unchecked {
i++;
}
}
}
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"_oracleWeight","internalType":"address"}]},{"type":"event","name":"OnLockAmountIncreased","inputs":[{"type":"address","name":"user","internalType":"address","indexed":false},{"type":"uint256","name":"amount","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"OnLockDurationIncreased","inputs":[{"type":"address","name":"user","internalType":"address","indexed":false},{"type":"uint256","name":"newUnlockTime","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"OnLockWithdrawal","inputs":[{"type":"address","name":"user","internalType":"address","indexed":false},{"type":"uint256","name":"amount","internalType":"uint256","indexed":false},{"type":"uint8","name":"mode","internalType":"uint8","indexed":false}],"anonymous":false},{"type":"event","name":"OnTokenLock","inputs":[{"type":"address","name":"owner","internalType":"address","indexed":true},{"type":"uint256","name":"amount","internalType":"uint256","indexed":false},{"type":"uint256","name":"unlockTime","internalType":"uint256","indexed":false},{"type":"uint8","name":"lockMode","internalType":"uint8","indexed":false}],"anonymous":false},{"type":"event","name":"OnTokenUnlock","inputs":[{"type":"address","name":"user","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"fallback","stateMutability":"payable"},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"LOCK_TIME_DURATION","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"LOCK_TIME_MULTIPLIER","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"NFTStake","inputs":[{"type":"uint256","name":"tokenId","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"NFTWithdraw","inputs":[{"type":"uint256","name":"tokenId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"PRECISION_FACTOR","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"batchNFTStake","inputs":[{"type":"uint256[]","name":"tokenIds","internalType":"uint256[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"batchNFTWithdraw","inputs":[{"type":"uint256[]","name":"tokenIds","internalType":"uint256[]"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"weight","internalType":"uint256"}],"name":"calculateUserNFTWeight","inputs":[{"type":"address","name":"_account","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"deadAddress","inputs":[]},{"type":"function","stateMutability":"payable","outputs":[],"name":"deposit","inputs":[{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint8","name":"lockMode","internalType":"uint8"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"distributeReward","inputs":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"rewards","internalType":"struct PRONFTMultiStaking.Reward[]","components":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]}],"name":"distributedTotalReward","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"rewards","internalType":"struct PRONFTMultiStaking.Reward[]","components":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]}],"name":"distributedUserTotalReward","inputs":[{"type":"address","name":"user","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"distributor","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"emergencyWithdraw","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"enableEmergency","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"extendLockTime","inputs":[{"type":"uint256","name":"lockMode","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"poolSize","internalType":"uint256"},{"type":"uint256","name":"proAmount","internalType":"uint256"},{"type":"uint256","name":"nftCount","internalType":"uint256"},{"type":"uint256","name":"xOracleAmount","internalType":"uint256"}],"name":"getGlobalStatus","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[]","name":"times","internalType":"uint256[]"},{"type":"tuple[]","name":"rewards","internalType":"struct PRONFTMultiStaking.Reward[]","components":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]}],"name":"getRewardHistory","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"harvest","inputs":[]},{"type":"function","stateMutability":"payable","outputs":[],"name":"increaseLockAmount","inputs":[{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"isStaked","inputs":[{"type":"address","name":"account","internalType":"address"},{"type":"uint256","name":"tokenId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"minProAmount","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"minxOracleAmount","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bytes4","name":"","internalType":"bytes4"}],"name":"onERC721Received","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"},{"type":"uint256","name":"","internalType":"uint256"},{"type":"bytes","name":"","internalType":"bytes"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"oracle","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"oracleNFT","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"oracleWeight","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"rewards","internalType":"struct PRONFTMultiStaking.Reward[]","components":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]}],"name":"pendingRewards","inputs":[{"type":"address","name":"user","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"proAmountForLock","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"proToken","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setDistributor","inputs":[{"type":"address","name":"_distributor","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setEmergency","inputs":[{"type":"bool","name":"_flag","internalType":"bool"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setMinPro","inputs":[{"type":"uint256","name":"_min","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setMinxOracle","inputs":[{"type":"uint256","name":"_min","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setOracleWeight","inputs":[{"type":"address","name":"_oracleWeight","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"shortenLockTime","inputs":[{"type":"uint256","name":"lockMode","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalNFTWeight","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalPoolWeight","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"amount","internalType":"uint256"}],"name":"totalProLocked","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[]","name":"","internalType":"uint256[]"}],"name":"totalStakedNFT","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"tokenCount","internalType":"uint256"}],"name":"totalStakedNFTCount","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalXOracleLocked","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"totalWeight","internalType":"uint256"},{"type":"uint256","name":"unlockTime","internalType":"uint256"},{"type":"uint256","name":"nftWeight","internalType":"uint256"},{"type":"uint256","name":"lockedAmount","internalType":"uint256"},{"type":"uint256","name":"lockMode","internalType":"uint256"},{"type":"uint256","name":"xOracleLock","internalType":"uint256"}],"name":"userLocks","inputs":[{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[]","name":"","internalType":"uint256[]"}],"name":"userStakedNFT","inputs":[{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"userStakedNFTCount","inputs":[{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[]","name":"","internalType":"uint256[]"}],"name":"userWalletNFT","inputs":[{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"withdraw","inputs":[{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"wsgb","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"xOracle","inputs":[]},{"type":"receive","stateMutability":"payable"}]
Contract Creation Code
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