ERC-721
Overview
Max Total Supply
0 BFR
Holders
0
Total Transfers
-
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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Contract Name:
BufferBinaryOptions
Compiler Version
v0.8.4+commit.c7e474f2
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.4;
import "ReentrancyGuard.sol";
import "ERC721.sol";
import "AccessControl.sol";
import "SafeERC20.sol";
import "Interfaces.sol";
import "OptionMath.sol";
/**
* @author Heisenberg
* @title Buffer Options
* @notice Creates ERC721 Options
*/
contract BufferBinaryOptions is
IBufferBinaryOptions,
ReentrancyGuard,
ERC721,
AccessControl
{
using SafeERC20 for ERC20;
uint256 public nextTokenId = 0;
uint256 public override totalMarketOI;
bool public isPaused;
uint16 public stepSize = 25; // Factor of 1e2
string public override token0;
string public override token1;
ILiquidityPool public override pool;
IOptionsConfig public override config;
IReferralStorage public referral;
AssetCategory public assetCategory;
ERC20 public override tokenX;
mapping(uint256 => Option) public override options;
mapping(address => uint256[]) public userOptionIds;
mapping(address => bool) public approvedAddresses;
bytes32 public constant ROUTER_ROLE = keccak256("ROUTER_ROLE");
bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
constructor() ERC721("Buffer", "BFR") {
_setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/************************************************
* INITIALIZATION FUNCTIONS
***********************************************/
function initialize(
ERC20 _tokenX,
ILiquidityPool _pool,
IOptionsConfig _config,
IReferralStorage _referral,
AssetCategory _category,
string memory _token0,
string memory _token1
) external onlyRole(DEFAULT_ADMIN_ROLE) {
if (address(tokenX) == address(0)) {
tokenX = _tokenX;
pool = _pool;
config = _config;
referral = _referral;
assetCategory = _category;
token0 = _token0;
token1 = _token1;
_setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
emit CreateOptionsContract(
address(config),
address(pool),
address(tokenX),
token0,
token1,
assetCategory
);
} else {
revert("Already initialized");
}
}
function assetPair() external view override returns (string memory) {
return string(abi.encodePacked(token0, token1));
}
/**
* @notice Grants complete approval from the pool
*/
function approvePoolToTransferTokenX() public {
tokenX.approve(address(pool), ~uint256(0));
}
/**
* @notice Pauses/Unpauses the option creation
*/
function setIsPaused() public {
if (hasRole(PAUSER_ROLE, msg.sender)) {
isPaused = true;
} else if (hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) {
isPaused = !isPaused;
} else {
revert("Wrong role");
}
emit Pause(isPaused);
}
/************************************************
* ROUTER ONLY FUNCTIONS
***********************************************/
/**
* @notice Creates an option with the specified parameters
* @dev Can only be called by router
*/
function createFromRouter(
OptionParams calldata optionParams,
uint256 queuedTime
) external override onlyRole(ROUTER_ROLE) returns (uint256 optionID) {
Option memory option = Option(
State.Active,
optionParams.strike,
optionParams.amount,
optionParams.amount,
optionParams.amount / 2,
queuedTime + optionParams.period,
optionParams.totalFee,
queuedTime
);
optionID = _generateTokenId();
userOptionIds[optionParams.user].push(optionID);
options[optionID] = option;
_mint(optionParams.user, optionID);
uint256 referrerFee = _processReferralRebate(
optionParams.user,
optionParams.totalFee,
optionParams.amount,
optionParams.referralCode,
optionParams.baseSettlementFeePercentage
);
uint256 settlementFee = optionParams.totalFee -
option.premium -
referrerFee;
tokenX.safeTransfer(
config.settlementFeeDisbursalContract(),
settlementFee
);
pool.lock(optionID, option.lockedAmount, option.premium);
IBooster booster = IBooster(config.boosterContract());
if (
booster.getBoostPercentage(optionParams.user, address(tokenX)) > 0
) {
booster.updateUserBoost(optionParams.user, address(tokenX));
}
IOptionStorage(config.optionStorageContract()).save(
optionID,
address(this),
optionParams.user
);
totalMarketOI += optionParams.totalFee;
IPoolOIStorage(config.poolOIStorageContract()).updatePoolOI(
true,
optionParams.totalFee
);
emit Create(
optionParams.user,
optionID,
settlementFee,
optionParams.totalFee
);
}
/**
* @notice Unlocks/Exercises the active options
* @dev Can only be called router
*/
function unlock(
uint256 optionID,
uint256 closingPrice,
uint256 closingTime,
bool isAbove
) external override onlyRole(ROUTER_ROLE) {
require(_exists(optionID), "O10");
Option storage option = options[optionID];
require(option.state == State.Active, "O5");
uint256 payout;
if (
(isAbove && closingPrice > option.strike) ||
(!isAbove && closingPrice < option.strike) ||
option.expiration > closingTime
) {
payout = _exercise(optionID, closingPrice, closingTime, isAbove);
} else {
option.state = State.Expired;
pool.unlock(optionID);
_burn(optionID);
emit Expire(optionID, option.premium, closingPrice, isAbove);
}
totalMarketOI -= option.totalFee;
IPoolOIStorage(config.poolOIStorageContract()).updatePoolOI(
false,
option.totalFee
);
ICircuitBreaker(config.circuitBreakerContract()).update(
int256(payout) - int256(option.totalFee),
int256(option.totalFee - option.premium),
optionID
);
}
/************************************************
* READ ONLY FUNCTIONS
***********************************************/
/**
* @notice Returns decimals of the pool token
*/
function decimals() public view returns (uint256) {
return tokenX.decimals();
}
/**
* @notice Calculates the fees for buying an option
*/
function fees(
uint256 amount,
address user,
string calldata referralCode,
uint256 baseSettlementFeePercentage
)
public
view
override
returns (uint256 total, uint256 settlementFee, uint256 premium)
{
uint256 settlementFeePercentage = getSettlementFeePercentage(
referral.codeOwner(referralCode),
user,
baseSettlementFeePercentage
);
(total, settlementFee, premium) = _fees(
amount,
settlementFeePercentage
);
}
function isStrikeValid(
uint256 slippage,
uint256 currentPrice,
uint256 strike
) external pure override returns (bool) {
if (
(currentPrice <= (strike * (1e4 + slippage)) / 1e4) &&
(currentPrice >= (strike * (1e4 - slippage)) / 1e4)
) {
return true;
} else return false;
}
function getMaxTradeSize() public view returns (uint256) {
return
min(
IPoolOIConfig(config.poolOIConfigContract()).getMaxPoolOI(),
IMarketOIConfig(config.marketOIConfigContract()).getMaxMarketOI(
totalMarketOI
)
);
}
function getMaxOI() public view override returns (uint256) {
return
min(
IPoolOIConfig(config.poolOIConfigContract()).getPoolOICap(),
IMarketOIConfig(config.marketOIConfigContract())
.getMarketOICap()
);
}
/**
* @notice Runs all the checks on the option parameters and
* returns the revised amount and fee
*/
function evaluateParams(
OptionParams calldata optionParams,
uint256 slippage
) external view override returns (uint256 amount, uint256 revisedFee) {
require(slippage <= 5e2, "O34"); // 5% is the max slippage a user can use
require(optionParams.period >= config.minPeriod(), "O21");
require(optionParams.period <= config.maxPeriod(), "O25");
require(optionParams.totalFee >= config.minFee(), "O35");
require(!isPaused, "O33");
require(
assetCategory == AssetCategory.Crypto ||
ICreationWindowContract(config.creationWindowContract())
.isInCreationWindow(optionParams.period),
"O30"
);
uint256 maxTradeSize = getMaxTradeSize();
require(maxTradeSize > 0, "O36");
revisedFee = min(optionParams.totalFee, maxTradeSize);
if (revisedFee < optionParams.totalFee) {
require(optionParams.allowPartialFill, "O29");
}
// Calculate the amount here from the revised fees
uint256 settlementFeePercentage = getSettlementFeePercentage(
referral.codeOwner(optionParams.referralCode),
optionParams.user,
optionParams.baseSettlementFeePercentage
);
(uint256 unitFee, , ) = _fees(
10 ** decimals(),
settlementFeePercentage
);
amount = (revisedFee * 10 ** decimals()) / unitFee;
}
/************************************************
* ERC721 FUNCTIONS
***********************************************/
function _generateTokenId() internal returns (uint256) {
return nextTokenId++;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function supportsInterface(
bytes4 interfaceId
) public view override(ERC721, AccessControl) returns (bool) {
return super.supportsInterface(interfaceId);
}
function ownerOf(
uint256 tokenId
)
public
view
virtual
override(ERC721, IBufferBinaryOptions)
returns (address)
{
return super.ownerOf(tokenId);
}
/************************************************
* INTERNAL OPTION UTILITY FUNCTIONS
***********************************************/
/**
* @notice Calculates the fees for buying an option
*/
function _fees(
uint256 amount,
uint256 settlementFeePercentage
)
internal
pure
returns (uint256 total, uint256 settlementFee, uint256 premium)
{
// Probability for ATM options will always be 0.5 due to which we can skip using BSM
premium = amount / 2;
total = (premium * 1e4) / (1e4 - settlementFeePercentage);
settlementFee = total - premium;
}
/**
* @notice Exercises the ITM options
*/
function _exercise(
uint256 optionID,
uint256 closingPrice,
uint256 closingTime,
bool isAbove
) internal returns (uint256 profit) {
Option storage option = options[optionID];
address user = ownerOf(optionID);
if (option.expiration > closingTime) {
bool isITM;
if (
(isAbove && option.strike < closingPrice) ||
(!isAbove && option.strike > closingPrice)
) {
isITM = true;
}
profit =
(option.lockedAmount *
OptionMath.blackScholesPriceBinary(
config.getFactoredIv(isITM),
option.strike,
closingPrice,
option.expiration - closingTime,
true,
isAbove
)) /
1e8;
} else {
profit = option.lockedAmount;
}
pool.send(optionID, address(this), option.lockedAmount);
tokenX.safeTransfer(user, profit);
if (profit < option.lockedAmount) {
tokenX.safeTransfer(address(pool), option.lockedAmount - profit);
}
if (profit <= option.premium)
emit LpProfit(optionID, option.premium - profit);
else emit LpLoss(optionID, profit - option.premium);
// Burn the option
_burn(optionID);
option.state = State.Exercised;
emit Exercise(user, optionID, profit, closingPrice, isAbove);
}
/**
* @notice Sends the referral rebate to the referrer and
* updates the stats in the referral storage contract
*/
function _processReferralRebate(
address user,
uint256 totalFee,
uint256 amount,
string calldata referralCode,
uint256 baseSettlementFeePercentage
) internal returns (uint256 referrerFee) {
address referrer = referral.codeOwner(referralCode);
if (
referrer != user &&
referrer != address(0) &&
referrer.code.length == 0
) {
bool isReferralValid = true;
referrerFee = ((totalFee *
referral.referrerTierDiscount(
referral.referrerTier(referrer)
)) / (1e4 * 1e3));
if (referrerFee > 0) {
tokenX.safeTransfer(referrer, referrerFee);
(uint256 formerUnitFee, , ) = _fees(
10 ** decimals(),
baseSettlementFeePercentage
);
emit UpdateReferral(
user,
referrer,
isReferralValid,
totalFee,
referrerFee,
(((formerUnitFee * amount) / 10 ** decimals()) - totalFee),
referralCode
);
}
}
}
/**
* @notice Calculates the discount to be applied on settlement fee based on
* referrer tiers
*/
function _getReferralDiscount(
address referrer,
address user
) public view returns (uint256 referralDiscount) {
uint256 maxStep;
if (
referrer != user &&
referrer != address(0) &&
referrer.code.length == 0
) {
uint8 step = referral.referrerTierStep(
referral.referrerTier(referrer)
);
maxStep += step;
}
referralDiscount = (stepSize * maxStep);
}
/**
* @notice Returns the discounted settlement fee
*/
function getSettlementFeePercentage(
address referrer,
address user,
uint256 baseSettlementFeePercentage
) public view returns (uint256 settlementFeePercentage) {
settlementFeePercentage = baseSettlementFeePercentage;
uint256 referralDiscount = _getReferralDiscount(referrer, user);
settlementFeePercentage =
settlementFeePercentage -
referralDiscount -
IBooster(config.boosterContract()).getBoostPercentage(
user,
address(tokenX)
);
}
function approveAddress(
address addressToApprove
) public onlyRole(DEFAULT_ADMIN_ROLE) {
approvedAddresses[addressToApprove] = true;
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
if (
from != address(0) &&
to != address(0) &&
approvedAddresses[to] == false &&
approvedAddresses[from] == false
) {
revert("Token transfer not allowed");
}
}
}// SPDX-License-Identifier: MIT
// 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;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "IERC721.sol";
import "IERC721Receiver.sol";
import "IERC721Metadata.sol";
import "Address.sol";
import "Context.sol";
import "Strings.sol";
import "ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// 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;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @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 virtual override returns (uint256) {
require(owner != address(0), "ERC721: address zero is not a valid owner");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: invalid token ID");
return owner;
}
/**
* @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) {
_requireMinted(tokenId);
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 overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not token owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
_requireMinted(tokenId);
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_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 {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner nor approved");
_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 {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner nor approved");
_safeTransfer(from, to, tokenId, data);
}
/**
* @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.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @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`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* 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
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` has not been minted yet.
*/
function _requireMinted(uint256 tokenId) internal view virtual {
require(_exists(tokenId), "ERC721: invalid token ID");
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a 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 _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* 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, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "IERC165.sol";
/**
* @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);
}// 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);
}// SPDX-License-Identifier: MIT
// 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);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "IERC721.sol";
/**
* @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);
}// SPDX-License-Identifier: MIT
// 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);
}
}
}
}// SPDX-License-Identifier: MIT
// 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;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @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);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "IERC165.sol";
/**
* @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;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "IAccessControl.sol";
import "Context.sol";
import "Strings.sol";
import "ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role);
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `_msgSender()` is missing `role`.
* Overriding this function changes the behavior of the {onlyRole} modifier.
*
* Format of the revert message is described in {_checkRole}.
*
* _Available since v4.6._
*/
function _checkRole(bytes32 role) internal view virtual {
_checkRole(role, _msgSender());
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view virtual {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleGranted} event.
*/
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleRevoked} event.
*/
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*
* May emit a {RoleRevoked} event.
*/
function renounceRole(bytes32 role, address account) public virtual override {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* May emit a {RoleGranted} event.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleGranted} event.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleRevoked} event.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
import "draft-IERC20Permit.sol";
import "Address.sol";
/**
* @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");
}
}
}// SPDX-License-Identifier: MIT
// 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);
}// SPDX-License-Identifier: MIT
// 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);
}// SPDX-License-Identifier: BUSL-1.1
import "ERC20.sol";
pragma solidity 0.8.4;
interface ICircuitBreaker {
struct MarketPoolPair {
address market;
address pool;
}
struct Configs {
int256 value;
address contractAddress;
}
struct OverallStats {
address contractAddress;
int256 loss;
int256 sf;
int256 lp_sf;
int256 net_loss;
}
struct MarketStats {
address pool;
int256 loss;
int256 sf;
}
struct PoolStats {
address[] markets;
int256 loss;
int256 sf;
}
function update(int256 loss, int256 sf, uint256 option_id) external;
event Update(
int256 loss,
int256 sf,
address market,
address pool,
uint256 option_id
);
event MarketPaused(address market, address pool);
event PoolPaused(address pool);
}
interface IBooster {
struct UserBoostTrades {
uint256 totalBoostTrades;
uint256 totalBoostTradesUsed;
}
function getUserBoostData(
address user,
address token
) external view returns (UserBoostTrades memory);
function updateUserBoost(address user, address token) external;
function getBoostPercentage(
address user,
address token
) external view returns (uint256);
struct Permit {
uint256 value;
uint256 deadline;
uint8 v;
bytes32 r;
bytes32 s;
bool shouldApprove;
}
event ApproveTokenX(
address user,
uint256 nonce,
uint256 value,
uint256 deadline,
address tokenX
);
event BuyCoupon(address indexed token, address indexed user, uint256 price);
event SetPrice(uint256 couponPrice);
event SetBoostPercentage(uint256 boost);
event UpdateBoostTradesUser(address indexed user, address indexed token);
event Configure(uint8[4] nftTierDiscounts);
}
interface IAccountRegistrar {
struct AccountMapping {
address oneCT;
uint256 nonce;
}
event RegisterAccount(
address indexed user,
address indexed oneCT,
uint256 nonce
);
event DeregisterAccount(address indexed account, uint256 nonce);
function accountMapping(
address
) external view returns (address oneCT, uint256 nonce);
function registerAccount(
address oneCT,
address user,
bytes memory signature
) external;
}
interface IBufferRouter {
struct QueuedTrade {
address user;
uint256 totalFee;
uint256 period;
address targetContract;
uint256 strike;
uint256 slippage;
bool allowPartialFill;
string referralCode;
uint256 settlementFee;
bool isLimitOrder;
bool isTradeResolved;
uint256 optionId;
bool isEarlyCloseAllowed;
bool isAbove;
}
struct OptionInfo {
uint256 queueId;
address signer;
uint256 nonce;
}
struct SignInfo {
bytes signature;
uint256 timestamp;
}
struct TradeParams {
uint256 queueId;
uint256 totalFee;
uint256 period;
address targetContract;
uint256 strike;
uint256 slippage;
bool allowPartialFill;
string referralCode;
bool isAbove;
uint256 price;
uint256 settlementFee;
bool isLimitOrder;
uint256 limitOrderExpiry;
uint256 userSignedSettlementFee;
uint256 spread;
SignInfo settlementFeeSignInfo;
SignInfo userSignInfo;
SignInfo publisherSignInfo;
SignInfo spreadSignInfo;
}
struct Register {
address oneCT;
bytes signature;
bool shouldRegister;
}
struct Permit {
uint256 value;
uint256 deadline;
uint8 v;
bytes32 r;
bytes32 s;
bool shouldApprove;
}
struct RevokeParams {
address tokenX;
address user;
Permit permit;
}
struct OpenTxn {
TradeParams tradeParams;
Register register;
Permit permit;
address user;
}
struct AccountMapping {
address oneCT;
uint256 nonce;
}
struct CloseTradeParams {
uint256 optionId;
address targetContract;
uint256 closingPrice;
bool isAbove;
SignInfo marketDirectionSignInfo;
SignInfo publisherSignInfo;
}
struct CloseAnytimeParams {
CloseTradeParams closeTradeParams;
Register register;
SignInfo userSignInfo;
}
struct IdMapping {
uint256 id;
bool isSet;
}
event OpenTrade(
address indexed account,
uint256 queueId,
uint256 optionId,
address targetContract
);
event CancelTrade(address indexed account, uint256 queueId, string reason);
event FailUnlock(
uint256 indexed optionId,
address targetContract,
string reason
);
event FailResolve(uint256 indexed queueId, string reason);
event FailRevoke(address indexed user, address tokenX, string reason);
event ContractRegistryUpdated(address targetContract, bool register);
event ApproveRouter(
address user,
uint256 nonce,
uint256 value,
uint256 deadline,
address tokenX
);
event RevokeRouter(
address user,
uint256 nonce,
uint256 value,
uint256 deadline,
address tokenX
);
}
interface IBufferBinaryOptions {
event Create(
address indexed account,
uint256 indexed id,
uint256 settlementFee,
uint256 totalFee
);
event Exercise(
address indexed account,
uint256 indexed id,
uint256 profit,
uint256 priceAtExpiration,
bool isAbove
);
event Expire(
uint256 indexed id,
uint256 premium,
uint256 priceAtExpiration,
bool isAbove
);
event Pause(bool isPaused);
event UpdateReferral(
address user,
address referrer,
bool isReferralValid,
uint256 totalFee,
uint256 referrerFee,
uint256 rebate,
string referralCode
);
event LpProfit(uint256 indexed id, uint256 amount);
event LpLoss(uint256 indexed id, uint256 amount);
function createFromRouter(
OptionParams calldata optionParams,
uint256 queuedTime
) external returns (uint256 optionID);
function evaluateParams(
OptionParams calldata optionParams,
uint256 slippage
) external returns (uint256 amount, uint256 revisedFee);
function tokenX() external view returns (ERC20);
function pool() external view returns (ILiquidityPool);
function config() external view returns (IOptionsConfig);
function token0() external view returns (string memory);
function token1() external view returns (string memory);
function ownerOf(uint256 id) external view returns (address);
function assetPair() external view returns (string memory);
function totalMarketOI() external view returns (uint256);
function getMaxOI() external view returns (uint256);
function fees(
uint256 amount,
address user,
string calldata referralCode,
uint256 baseSettlementFeePercent
)
external
view
returns (uint256 total, uint256 settlementFee, uint256 premium);
function isStrikeValid(
uint256 slippage,
uint256 currentPrice,
uint256 strike
) external pure returns (bool);
enum State {
Inactive,
Active,
Exercised,
Expired
}
enum AssetCategory {
Forex,
Crypto,
Commodities
}
struct OptionExpiryData {
uint256 optionId;
uint256 priceAtExpiration;
}
event CreateOptionsContract(
address config,
address pool,
address tokenX,
string token0,
string token1,
AssetCategory category
);
struct Option {
State state;
uint256 strike;
uint256 amount;
uint256 lockedAmount;
uint256 premium;
uint256 expiration;
uint256 totalFee;
uint256 createdAt;
}
struct OptionParams {
uint256 strike;
uint256 amount;
uint256 period;
bool allowPartialFill;
uint256 totalFee;
address user;
string referralCode;
uint256 baseSettlementFeePercentage;
}
function options(
uint256 optionId
)
external
view
returns (
State state,
uint256 strike,
uint256 amount,
uint256 lockedAmount,
uint256 premium,
uint256 expiration,
uint256 totalFee,
uint256 createdAt
);
function unlock(
uint256 optionID,
uint256 priceAtExpiration,
uint256 closingTime,
bool isAbove
) external;
}
interface IBufferBinaryOptionPauserV2_5 {
function isPaused() external view returns (bool);
function setIsPaused() external;
}
interface IBufferBinaryOptionPauserV2 {
function isPaused() external view returns (bool);
function toggleCreation() external;
}
interface ILiquidityPool {
struct LockedAmount {
uint256 timestamp;
uint256 amount;
}
struct ProvidedLiquidity {
uint256 unlockedAmount;
LockedAmount[] lockedAmounts;
uint256 nextIndexForUnlock;
}
struct LockedLiquidity {
uint256 amount;
uint256 premium;
bool locked;
}
event Profit(uint256 indexed id, uint256 amount);
event Loss(uint256 indexed id, uint256 amount);
event Provide(address indexed account, uint256 amount, uint256 writeAmount);
event UpdateMaxLiquidity(uint256 indexed maxLiquidity);
event Withdraw(
address indexed account,
uint256 amount,
uint256 writeAmount
);
function unlock(uint256 id) external;
function totalTokenXBalance() external view returns (uint256 amount);
function availableBalance() external view returns (uint256 balance);
function send(uint256 id, address account, uint256 amount) external;
function lock(uint256 id, uint256 tokenXAmount, uint256 premium) external;
}
interface IOptionsConfig {
event UpdateMaxPeriod(uint32 value);
event UpdateMinPeriod(uint32 value);
event UpdateEarlyCloseThreshold(uint32 earlyCloseThreshold);
event UpdateEarlyClose(bool isAllowed);
event UpdateSettlementFeeDisbursalContract(address value);
event UpdatetraderNFTContract(address value);
event UpdateMinFee(uint256 value);
event UpdateOptionStorageContract(address value);
event UpdateCreationWindowContract(address value);
event UpdatePlatformFee(uint256 _platformFee);
event UpdatePoolOIStorageContract(address _poolOIStorageContract);
event UpdatePoolOIConfigContract(address _poolOIConfigContract);
event UpdateMarketOIConfigContract(address _marketOIConfigContract);
event UpdateIV(uint32 _iv);
event UpdateBoosterContract(address _boosterContract);
event UpdateSpreadConfig1(uint256 spreadConfig1);
event UpdateSpreadConfig2(uint256 spreadConfig2);
event UpdateIVFactorITM(uint256 ivFactorITM);
event UpdateIVFactorOTM(uint256 ivFactorOTM);
event UpdateSpreadFactor(uint32 ivFactorOTM);
event UpdateCircuitBreakerContract(address _circuitBreakerContract);
function circuitBreakerContract() external view returns (address);
function settlementFeeDisbursalContract() external view returns (address);
function maxPeriod() external view returns (uint32);
function minPeriod() external view returns (uint32);
function minFee() external view returns (uint256);
function platformFee() external view returns (uint256);
function optionStorageContract() external view returns (address);
function creationWindowContract() external view returns (address);
function poolOIStorageContract() external view returns (address);
function poolOIConfigContract() external view returns (address);
function marketOIConfigContract() external view returns (address);
function iv() external view returns (uint32);
function earlyCloseThreshold() external view returns (uint32);
function isEarlyCloseAllowed() external view returns (bool);
function boosterContract() external view returns (address);
function spreadConfig1() external view returns (uint256);
function spreadConfig2() external view returns (uint256);
function spreadFactor() external view returns (uint32);
function getFactoredIv(bool isITM) external view returns (uint32);
}
interface ITraderNFT {
function tokenOwner(uint256 id) external view returns (address user);
function tokenTierMappings(uint256 id) external view returns (uint8 tier);
event UpdateTiers(uint256[] tokenIds, uint8[] tiers, uint256[] batchIds);
}
interface IFakeTraderNFT {
function tokenOwner(uint256 id) external view returns (address user);
function tokenTierMappings(uint256 id) external view returns (uint8 tier);
event UpdateNftBasePrice(uint256 nftBasePrice);
event UpdateMaxNFTMintLimits(uint256 maxNFTMintLimit);
event UpdateBaseURI(string baseURI);
event Claim(address indexed account, uint256 claimTokenId);
event Mint(address indexed account, uint256 tokenId, uint8 tier);
}
interface IReferralStorage {
function codeOwner(string memory _code) external view returns (address);
function traderReferralCodes(address) external view returns (string memory);
function getTraderReferralInfo(
address user
) external view returns (string memory, address);
function setTraderReferralCode(address user, string memory _code) external;
function setReferrerTier(address, uint8) external;
function referrerTierStep(
uint8 referralTier
) external view returns (uint8 step);
function referrerTierDiscount(
uint8 referralTier
) external view returns (uint32 discount);
function referrerTier(address referrer) external view returns (uint8 tier);
struct ReferrerData {
uint256 tradeVolume;
uint256 rebate;
uint256 trades;
}
struct ReferreeData {
uint256 tradeVolume;
uint256 rebate;
}
struct ReferralData {
ReferrerData referrerData;
ReferreeData referreeData;
}
struct Tier {
uint256 totalRebate; // e.g. 2400 for 24%
uint256 discountShare; // 5000 for 50%/50%, 7000 for 30% rebates/70% discount
}
event UpdateTraderReferralCode(address indexed account, string code);
event UpdateReferrerTier(address referrer, uint8 tierId);
event RegisterCode(address indexed account, string code);
event SetCodeOwner(
address indexed account,
address newAccount,
string code
);
}
interface IOptionStorage {
function save(
uint256 optionId,
address optionsContract,
address user
) external;
}
interface ICreationWindowContract {
function isInCreationWindow(uint256 period) external view returns (bool);
}
interface IPoolOIStorage {
function updatePoolOI(bool isIncreased, uint256 interest) external;
function totalPoolOI() external view returns (uint256);
}
interface IPoolOIConfig {
function getMaxPoolOI() external view returns (uint256);
function getPoolOICap() external view returns (uint256);
}
interface IMarketOIConfig {
function getMaxMarketOI(
uint256 currentMarketOI
) external view returns (uint256);
function getMarketOICap() external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
import "IERC20Metadata.sol";
import "Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.4;
import "ABDKMath64x64.sol";
library OptionMath {
using ABDKMath64x64 for int128;
// 64x64 fixed point integer constants
int128 internal constant ONE_64x64 = 0x10000000000000000;
int128 internal constant THREE_64x64 = 0x30000000000000000;
// 64x64 fixed point constants used in Choudhury’s approximation of the Black-Scholes CDF
int128 private constant CDF_CONST_0 = 0x09109f285df452394; // 2260 / 3989
int128 private constant CDF_CONST_1 = 0x19abac0ea1da65036; // 6400 / 3989
int128 private constant CDF_CONST_2 = 0x0d3c84b78b749bd6b; // 3300 / 3989
/**
* @notice calculate Choudhury’s approximation of the Black-Scholes CDF
* @param input64x64 64x64 fixed point representation of random variable
* @return 64x64 fixed point representation of the approximated CDF of x
*/
function _N(int128 input64x64) internal pure returns (int128) {
// squaring via mul is cheaper than via pow
int128 inputSquared64x64 = input64x64.mul(input64x64);
int128 value64x64 = (-inputSquared64x64 >> 1).exp().div(
CDF_CONST_0.add(CDF_CONST_1.mul(input64x64.abs())).add(
CDF_CONST_2.mul(inputSquared64x64.add(THREE_64x64).sqrt())
)
);
return input64x64 > 0 ? ONE_64x64.sub(value64x64) : value64x64;
}
/**
* @notice calculate the price of an option using the Black-Scholes model
* @param impliedVol uint256 representation of annualized impliedVol with a factor of 1e4
* @param strike uint256 representation of strike price with a factor of 1e8
* @param spot uint256 representation of spot price with a factor of 1e8
* @param period uint256 representation of duration of option contract (in seconds)
* @param isYes whether to price "call" or "put" option
* @param isAbove whether to the user bets the price will stay above this strike or not
* @return uint256 representation of Black-Scholes option price with a factor of 1e8
*/
function blackScholesPriceBinary(
uint256 impliedVol,
uint256 strike,
uint256 spot,
uint256 period,
bool isYes,
bool isAbove
) internal pure returns (uint256) {
int128 D8 = ABDKMath64x64.fromUInt(10 ** 8);
int128 D4 = ABDKMath64x64.fromUInt(10 ** 4);
int128 impliedVol64x64 = ABDKMath64x64.fromUInt(impliedVol).div(D4);
int128 variance64x64 = impliedVol64x64.mul(impliedVol64x64);
int128 strike64x64 = ABDKMath64x64.fromUInt(strike).div(D8);
int128 spot64x64 = ABDKMath64x64.fromUInt(spot).div(D8);
int128 maturity64x64 = ABDKMath64x64.fromUInt(period).div(
ABDKMath64x64.fromUInt(365 days)
);
int128 premium64x64 = _blackScholesPriceBinary(
variance64x64,
strike64x64,
spot64x64,
maturity64x64,
isYes,
isAbove
);
return ABDKMath64x64.toUInt(premium64x64.mul(D8));
}
/**
* @notice calculate the price of an option using the Black-Scholes model
* @param varianceAnnualized64x64 64x64 fixed point representation of annualized variance
* @param strike64x64 64x64 fixed point representation of strike price
* @param spot64x64 64x64 fixed point representation of spot price
* @param timeToMaturity64x64 64x64 fixed point representation of duration of option contract (in years)
* @param isYes whether to price "call" or "put" option
* @param isAbove whether to the user bets the price will stay above this strike or not
* @return 64x64 fixed point representation of Black-Scholes option price
*/
function _blackScholesPriceBinary(
int128 varianceAnnualized64x64,
int128 strike64x64,
int128 spot64x64,
int128 timeToMaturity64x64,
bool isYes,
bool isAbove
) internal pure returns (int128) {
int128 cumulativeVariance64x64 = timeToMaturity64x64.mul(
varianceAnnualized64x64
);
int128 cumulativeVarianceSqrt64x64 = cumulativeVariance64x64.sqrt();
int128 d1_64x64 = spot64x64
.div(strike64x64)
.ln()
.add(cumulativeVariance64x64 >> 1)
.div(cumulativeVarianceSqrt64x64);
int128 d2_64x64 = d1_64x64.sub(cumulativeVarianceSqrt64x64);
if (isYes) {
if (isAbove) {
return _N(d2_64x64);
} else {
return _N(-d2_64x64);
}
} else {
if (isAbove) {
return ABDKMath64x64.fromUInt(1).sub(_N(d2_64x64));
} else {
return ABDKMath64x64.fromUInt(1).sub(_N(-d2_64x64));
}
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.4;
/**
* Smart contract library of mathematical functions operating with signed
* 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is
* basically a simple fraction whose numerator is signed 128-bit integer and
* denominator is 2^64. As long as denominator is always the same, there is no
* need to store it, thus in Solidity signed 64.64-bit fixed point numbers are
* represented by int128 type holding only the numerator.
*/
library ABDKMath64x64 {
/*
* Minimum value signed 64.64-bit fixed point number may have.
*/
int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;
/*
* Maximum value signed 64.64-bit fixed point number may have.
*/
int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;
/**
* Convert signed 256-bit integer number into signed 64.64-bit fixed point
* number. Revert on overflow.
*
* @param x signed 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function fromInt(int256 x) internal pure returns (int128) {
unchecked {
require(x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);
return int128(x << 64);
}
}
/**
* Convert signed 64.64 fixed point number into signed 64-bit integer number
* rounding down.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64-bit integer number
*/
function toInt(int128 x) internal pure returns (int64) {
unchecked {
return int64(x >> 64);
}
}
/**
* Convert unsigned 256-bit integer number into signed 64.64-bit fixed point
* number. Revert on overflow.
*
* @param x unsigned 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function fromUInt(uint256 x) internal pure returns (int128) {
unchecked {
require(x <= 0x7FFFFFFFFFFFFFFF);
return int128(int256(x << 64));
}
}
/**
* Convert signed 64.64 fixed point number into unsigned 64-bit integer
* number rounding down. Revert on underflow.
*
* @param x signed 64.64-bit fixed point number
* @return unsigned 64-bit integer number
*/
function toUInt(int128 x) internal pure returns (uint64) {
unchecked {
require(x >= 0);
return uint64(uint128(x >> 64));
}
}
/**
* Convert signed 128.128 fixed point number into signed 64.64-bit fixed point
* number rounding down. Revert on overflow.
*
* @param x signed 128.128-bin fixed point number
* @return signed 64.64-bit fixed point number
*/
function from128x128(int256 x) internal pure returns (int128) {
unchecked {
int256 result = x >> 64;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Convert signed 64.64 fixed point number into signed 128.128 fixed point
* number.
*
* @param x signed 64.64-bit fixed point number
* @return signed 128.128 fixed point number
*/
function to128x128(int128 x) internal pure returns (int256) {
unchecked {
return int256(x) << 64;
}
}
/**
* Calculate x + y. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function add(int128 x, int128 y) internal pure returns (int128) {
unchecked {
int256 result = int256(x) + y;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate x - y. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function sub(int128 x, int128 y) internal pure returns (int128) {
unchecked {
int256 result = int256(x) - y;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate x * y rounding down. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function mul(int128 x, int128 y) internal pure returns (int128) {
unchecked {
int256 result = (int256(x) * y) >> 64;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate x * y rounding towards zero, where x is signed 64.64 fixed point
* number and y is signed 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64 fixed point number
* @param y signed 256-bit integer number
* @return signed 256-bit integer number
*/
function muli(int128 x, int256 y) internal pure returns (int256) {
unchecked {
if (x == MIN_64x64) {
require(
y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&
y <= 0x1000000000000000000000000000000000000000000000000
);
return -y << 63;
} else {
bool negativeResult = false;
if (x < 0) {
x = -x;
negativeResult = true;
}
if (y < 0) {
y = -y; // We rely on overflow behavior here
negativeResult = !negativeResult;
}
uint256 absoluteResult = mulu(x, uint256(y));
if (negativeResult) {
require(
absoluteResult <=
0x8000000000000000000000000000000000000000000000000000000000000000
);
return -int256(absoluteResult); // We rely on overflow behavior here
} else {
require(
absoluteResult <=
0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
);
return int256(absoluteResult);
}
}
}
}
/**
* Calculate x * y rounding down, where x is signed 64.64 fixed point number
* and y is unsigned 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64 fixed point number
* @param y unsigned 256-bit integer number
* @return unsigned 256-bit integer number
*/
function mulu(int128 x, uint256 y) internal pure returns (uint256) {
unchecked {
if (y == 0) return 0;
require(x >= 0);
uint256 lo = (uint256(int256(x)) *
(y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;
uint256 hi = uint256(int256(x)) * (y >> 128);
require(hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
hi <<= 64;
require(
hi <=
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -
lo
);
return hi + lo;
}
}
/**
* Calculate x / y rounding towards zero. Revert on overflow or when y is
* zero.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function div(int128 x, int128 y) internal pure returns (int128) {
unchecked {
require(y != 0);
int256 result = (int256(x) << 64) / y;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate x / y rounding towards zero, where x and y are signed 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x signed 256-bit integer number
* @param y signed 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function divi(int256 x, int256 y) internal pure returns (int128) {
unchecked {
require(y != 0);
bool negativeResult = false;
if (x < 0) {
x = -x; // We rely on overflow behavior here
negativeResult = true;
}
if (y < 0) {
y = -y; // We rely on overflow behavior here
negativeResult = !negativeResult;
}
uint128 absoluteResult = divuu(uint256(x), uint256(y));
if (negativeResult) {
require(absoluteResult <= 0x80000000000000000000000000000000);
return -int128(absoluteResult); // We rely on overflow behavior here
} else {
require(absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return int128(absoluteResult); // We rely on overflow behavior here
}
}
}
/**
* Calculate x / y rounding towards zero, where x and y are unsigned 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x unsigned 256-bit integer number
* @param y unsigned 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function divu(uint256 x, uint256 y) internal pure returns (int128) {
unchecked {
require(y != 0);
uint128 result = divuu(x, y);
require(result <= uint128(MAX_64x64));
return int128(result);
}
}
/**
* Calculate -x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function neg(int128 x) internal pure returns (int128) {
unchecked {
require(x != MIN_64x64);
return -x;
}
}
/**
* Calculate |x|. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function abs(int128 x) internal pure returns (int128) {
unchecked {
require(x != MIN_64x64);
return x < 0 ? -x : x;
}
}
/**
* Calculate 1 / x rounding towards zero. Revert on overflow or when x is
* zero.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function inv(int128 x) internal pure returns (int128) {
unchecked {
require(x != 0);
int256 result = int256(0x100000000000000000000000000000000) / x;
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function avg(int128 x, int128 y) internal pure returns (int128) {
unchecked {
return int128((int256(x) + int256(y)) >> 1);
}
}
/**
* Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.
* Revert on overflow or in case x * y is negative.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function gavg(int128 x, int128 y) internal pure returns (int128) {
unchecked {
int256 m = int256(x) * int256(y);
require(m >= 0);
require(
m <
0x4000000000000000000000000000000000000000000000000000000000000000
);
return int128(sqrtu(uint256(m)));
}
}
/**
* Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number
* and y is unsigned 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y uint256 value
* @return signed 64.64-bit fixed point number
*/
function pow(int128 x, uint256 y) internal pure returns (int128) {
unchecked {
bool negative = x < 0 && y & 1 == 1;
uint256 absX = uint128(x < 0 ? -x : x);
uint256 absResult;
absResult = 0x100000000000000000000000000000000;
if (absX <= 0x10000000000000000) {
absX <<= 63;
while (y != 0) {
if (y & 0x1 != 0) {
absResult = (absResult * absX) >> 127;
}
absX = (absX * absX) >> 127;
if (y & 0x2 != 0) {
absResult = (absResult * absX) >> 127;
}
absX = (absX * absX) >> 127;
if (y & 0x4 != 0) {
absResult = (absResult * absX) >> 127;
}
absX = (absX * absX) >> 127;
if (y & 0x8 != 0) {
absResult = (absResult * absX) >> 127;
}
absX = (absX * absX) >> 127;
y >>= 4;
}
absResult >>= 64;
} else {
uint256 absXShift = 63;
if (absX < 0x1000000000000000000000000) {
absX <<= 32;
absXShift -= 32;
}
if (absX < 0x10000000000000000000000000000) {
absX <<= 16;
absXShift -= 16;
}
if (absX < 0x1000000000000000000000000000000) {
absX <<= 8;
absXShift -= 8;
}
if (absX < 0x10000000000000000000000000000000) {
absX <<= 4;
absXShift -= 4;
}
if (absX < 0x40000000000000000000000000000000) {
absX <<= 2;
absXShift -= 2;
}
if (absX < 0x80000000000000000000000000000000) {
absX <<= 1;
absXShift -= 1;
}
uint256 resultShift = 0;
while (y != 0) {
require(absXShift < 64);
if (y & 0x1 != 0) {
absResult = (absResult * absX) >> 127;
resultShift += absXShift;
if (absResult > 0x100000000000000000000000000000000) {
absResult >>= 1;
resultShift += 1;
}
}
absX = (absX * absX) >> 127;
absXShift <<= 1;
if (absX >= 0x100000000000000000000000000000000) {
absX >>= 1;
absXShift += 1;
}
y >>= 1;
}
require(resultShift < 64);
absResult >>= 64 - resultShift;
}
int256 result = negative ? -int256(absResult) : int256(absResult);
require(result >= MIN_64x64 && result <= MAX_64x64);
return int128(result);
}
}
/**
* Calculate sqrt (x) rounding down. Revert if x < 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function sqrt(int128 x) internal pure returns (int128) {
unchecked {
require(x >= 0);
return int128(sqrtu(uint256(int256(x)) << 64));
}
}
/**
* Calculate binary logarithm of x. Revert if x <= 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function log_2(int128 x) internal pure returns (int128) {
unchecked {
require(x > 0);
int256 msb = 0;
int256 xc = x;
if (xc >= 0x10000000000000000) {
xc >>= 64;
msb += 64;
}
if (xc >= 0x100000000) {
xc >>= 32;
msb += 32;
}
if (xc >= 0x10000) {
xc >>= 16;
msb += 16;
}
if (xc >= 0x100) {
xc >>= 8;
msb += 8;
}
if (xc >= 0x10) {
xc >>= 4;
msb += 4;
}
if (xc >= 0x4) {
xc >>= 2;
msb += 2;
}
if (xc >= 0x2) msb += 1; // No need to shift xc anymore
int256 result = (msb - 64) << 64;
uint256 ux = uint256(int256(x)) << uint256(127 - msb);
for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {
ux *= ux;
uint256 b = ux >> 255;
ux >>= 127 + b;
result += bit * int256(b);
}
return int128(result);
}
}
/**
* Calculate natural logarithm of x. Revert if x <= 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function ln(int128 x) internal pure returns (int128) {
unchecked {
require(x > 0);
return
int128(
int256(
(uint256(int256(log_2(x))) *
0xB17217F7D1CF79ABC9E3B39803F2F6AF) >> 128
)
);
}
}
/**
* Calculate binary exponent of x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function exp_2(int128 x) internal pure returns (int128) {
unchecked {
require(x < 0x400000000000000000); // Overflow
if (x < -0x400000000000000000) return 0; // Underflow
uint256 result = 0x80000000000000000000000000000000;
if (x & 0x8000000000000000 > 0)
result = (result * 0x16A09E667F3BCC908B2FB1366EA957D3E) >> 128;
if (x & 0x4000000000000000 > 0)
result = (result * 0x1306FE0A31B7152DE8D5A46305C85EDEC) >> 128;
if (x & 0x2000000000000000 > 0)
result = (result * 0x1172B83C7D517ADCDF7C8C50EB14A791F) >> 128;
if (x & 0x1000000000000000 > 0)
result = (result * 0x10B5586CF9890F6298B92B71842A98363) >> 128;
if (x & 0x800000000000000 > 0)
result = (result * 0x1059B0D31585743AE7C548EB68CA417FD) >> 128;
if (x & 0x400000000000000 > 0)
result = (result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8) >> 128;
if (x & 0x200000000000000 > 0)
result = (result * 0x10163DA9FB33356D84A66AE336DCDFA3F) >> 128;
if (x & 0x100000000000000 > 0)
result = (result * 0x100B1AFA5ABCBED6129AB13EC11DC9543) >> 128;
if (x & 0x80000000000000 > 0)
result = (result * 0x10058C86DA1C09EA1FF19D294CF2F679B) >> 128;
if (x & 0x40000000000000 > 0)
result = (result * 0x1002C605E2E8CEC506D21BFC89A23A00F) >> 128;
if (x & 0x20000000000000 > 0)
result = (result * 0x100162F3904051FA128BCA9C55C31E5DF) >> 128;
if (x & 0x10000000000000 > 0)
result = (result * 0x1000B175EFFDC76BA38E31671CA939725) >> 128;
if (x & 0x8000000000000 > 0)
result = (result * 0x100058BA01FB9F96D6CACD4B180917C3D) >> 128;
if (x & 0x4000000000000 > 0)
result = (result * 0x10002C5CC37DA9491D0985C348C68E7B3) >> 128;
if (x & 0x2000000000000 > 0)
result = (result * 0x1000162E525EE054754457D5995292026) >> 128;
if (x & 0x1000000000000 > 0)
result = (result * 0x10000B17255775C040618BF4A4ADE83FC) >> 128;
if (x & 0x800000000000 > 0)
result = (result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB) >> 128;
if (x & 0x400000000000 > 0)
result = (result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9) >> 128;
if (x & 0x200000000000 > 0)
result = (result * 0x10000162E43F4F831060E02D839A9D16D) >> 128;
if (x & 0x100000000000 > 0)
result = (result * 0x100000B1721BCFC99D9F890EA06911763) >> 128;
if (x & 0x80000000000 > 0)
result = (result * 0x10000058B90CF1E6D97F9CA14DBCC1628) >> 128;
if (x & 0x40000000000 > 0)
result = (result * 0x1000002C5C863B73F016468F6BAC5CA2B) >> 128;
if (x & 0x20000000000 > 0)
result = (result * 0x100000162E430E5A18F6119E3C02282A5) >> 128;
if (x & 0x10000000000 > 0)
result = (result * 0x1000000B1721835514B86E6D96EFD1BFE) >> 128;
if (x & 0x8000000000 > 0)
result = (result * 0x100000058B90C0B48C6BE5DF846C5B2EF) >> 128;
if (x & 0x4000000000 > 0)
result = (result * 0x10000002C5C8601CC6B9E94213C72737A) >> 128;
if (x & 0x2000000000 > 0)
result = (result * 0x1000000162E42FFF037DF38AA2B219F06) >> 128;
if (x & 0x1000000000 > 0)
result = (result * 0x10000000B17217FBA9C739AA5819F44F9) >> 128;
if (x & 0x800000000 > 0)
result = (result * 0x1000000058B90BFCDEE5ACD3C1CEDC823) >> 128;
if (x & 0x400000000 > 0)
result = (result * 0x100000002C5C85FE31F35A6A30DA1BE50) >> 128;
if (x & 0x200000000 > 0)
result = (result * 0x10000000162E42FF0999CE3541B9FFFCF) >> 128;
if (x & 0x100000000 > 0)
result = (result * 0x100000000B17217F80F4EF5AADDA45554) >> 128;
if (x & 0x80000000 > 0)
result = (result * 0x10000000058B90BFBF8479BD5A81B51AD) >> 128;
if (x & 0x40000000 > 0)
result = (result * 0x1000000002C5C85FDF84BD62AE30A74CC) >> 128;
if (x & 0x20000000 > 0)
result = (result * 0x100000000162E42FEFB2FED257559BDAA) >> 128;
if (x & 0x10000000 > 0)
result = (result * 0x1000000000B17217F7D5A7716BBA4A9AE) >> 128;
if (x & 0x8000000 > 0)
result = (result * 0x100000000058B90BFBE9DDBAC5E109CCE) >> 128;
if (x & 0x4000000 > 0)
result = (result * 0x10000000002C5C85FDF4B15DE6F17EB0D) >> 128;
if (x & 0x2000000 > 0)
result = (result * 0x1000000000162E42FEFA494F1478FDE05) >> 128;
if (x & 0x1000000 > 0)
result = (result * 0x10000000000B17217F7D20CF927C8E94C) >> 128;
if (x & 0x800000 > 0)
result = (result * 0x1000000000058B90BFBE8F71CB4E4B33D) >> 128;
if (x & 0x400000 > 0)
result = (result * 0x100000000002C5C85FDF477B662B26945) >> 128;
if (x & 0x200000 > 0)
result = (result * 0x10000000000162E42FEFA3AE53369388C) >> 128;
if (x & 0x100000 > 0)
result = (result * 0x100000000000B17217F7D1D351A389D40) >> 128;
if (x & 0x80000 > 0)
result = (result * 0x10000000000058B90BFBE8E8B2D3D4EDE) >> 128;
if (x & 0x40000 > 0)
result = (result * 0x1000000000002C5C85FDF4741BEA6E77E) >> 128;
if (x & 0x20000 > 0)
result = (result * 0x100000000000162E42FEFA39FE95583C2) >> 128;
if (x & 0x10000 > 0)
result = (result * 0x1000000000000B17217F7D1CFB72B45E1) >> 128;
if (x & 0x8000 > 0)
result = (result * 0x100000000000058B90BFBE8E7CC35C3F0) >> 128;
if (x & 0x4000 > 0)
result = (result * 0x10000000000002C5C85FDF473E242EA38) >> 128;
if (x & 0x2000 > 0)
result = (result * 0x1000000000000162E42FEFA39F02B772C) >> 128;
if (x & 0x1000 > 0)
result = (result * 0x10000000000000B17217F7D1CF7D83C1A) >> 128;
if (x & 0x800 > 0)
result = (result * 0x1000000000000058B90BFBE8E7BDCBE2E) >> 128;
if (x & 0x400 > 0)
result = (result * 0x100000000000002C5C85FDF473DEA871F) >> 128;
if (x & 0x200 > 0)
result = (result * 0x10000000000000162E42FEFA39EF44D91) >> 128;
if (x & 0x100 > 0)
result = (result * 0x100000000000000B17217F7D1CF79E949) >> 128;
if (x & 0x80 > 0)
result = (result * 0x10000000000000058B90BFBE8E7BCE544) >> 128;
if (x & 0x40 > 0)
result = (result * 0x1000000000000002C5C85FDF473DE6ECA) >> 128;
if (x & 0x20 > 0)
result = (result * 0x100000000000000162E42FEFA39EF366F) >> 128;
if (x & 0x10 > 0)
result = (result * 0x1000000000000000B17217F7D1CF79AFA) >> 128;
if (x & 0x8 > 0)
result = (result * 0x100000000000000058B90BFBE8E7BCD6D) >> 128;
if (x & 0x4 > 0)
result = (result * 0x10000000000000002C5C85FDF473DE6B2) >> 128;
if (x & 0x2 > 0)
result = (result * 0x1000000000000000162E42FEFA39EF358) >> 128;
if (x & 0x1 > 0)
result = (result * 0x10000000000000000B17217F7D1CF79AB) >> 128;
result >>= uint256(int256(63 - (x >> 64)));
require(result <= uint256(int256(MAX_64x64)));
return int128(int256(result));
}
}
/**
* Calculate natural exponent of x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function exp(int128 x) internal pure returns (int128) {
unchecked {
require(x < 0x400000000000000000); // Overflow
if (x < -0x400000000000000000) return 0; // Underflow
return
exp_2(
int128(
(int256(x) * 0x171547652B82FE1777D0FFDA0D23A7D12) >> 128
)
);
}
}
/**
* Calculate x / y rounding towards zero, where x and y are unsigned 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x unsigned 256-bit integer number
* @param y unsigned 256-bit integer number
* @return unsigned 64.64-bit fixed point number
*/
function divuu(uint256 x, uint256 y) private pure returns (uint128) {
unchecked {
require(y != 0);
uint256 result;
if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
result = (x << 64) / y;
else {
uint256 msb = 192;
uint256 xc = x >> 192;
if (xc >= 0x100000000) {
xc >>= 32;
msb += 32;
}
if (xc >= 0x10000) {
xc >>= 16;
msb += 16;
}
if (xc >= 0x100) {
xc >>= 8;
msb += 8;
}
if (xc >= 0x10) {
xc >>= 4;
msb += 4;
}
if (xc >= 0x4) {
xc >>= 2;
msb += 2;
}
if (xc >= 0x2) msb += 1; // No need to shift xc anymore
result = (x << (255 - msb)) / (((y - 1) >> (msb - 191)) + 1);
require(result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
uint256 hi = result * (y >> 128);
uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
uint256 xh = x >> 192;
uint256 xl = x << 64;
if (xl < lo) xh -= 1;
xl -= lo; // We rely on overflow behavior here
lo = hi << 128;
if (xl < lo) xh -= 1;
xl -= lo; // We rely on overflow behavior here
assert(xh == hi >> 128);
result += xl / y;
}
require(result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return uint128(result);
}
}
/**
* Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer
* number.
*
* @param x unsigned 256-bit integer number
* @return unsigned 128-bit integer number
*/
function sqrtu(uint256 x) private pure returns (uint128) {
unchecked {
if (x == 0) return 0;
else {
uint256 xx = x;
uint256 r = 1;
if (xx >= 0x100000000000000000000000000000000) {
xx >>= 128;
r <<= 64;
}
if (xx >= 0x10000000000000000) {
xx >>= 64;
r <<= 32;
}
if (xx >= 0x100000000) {
xx >>= 32;
r <<= 16;
}
if (xx >= 0x10000) {
xx >>= 16;
r <<= 8;
}
if (xx >= 0x100) {
xx >>= 8;
r <<= 4;
}
if (xx >= 0x10) {
xx >>= 4;
r <<= 2;
}
if (xx >= 0x8) {
r <<= 1;
}
r = (r + x / r) >> 1;
r = (r + x / r) >> 1;
r = (r + x / r) >> 1;
r = (r + x / r) >> 1;
r = (r + x / r) >> 1;
r = (r + x / r) >> 1;
r = (r + x / r) >> 1; // Seven iterations should be enough
uint256 r1 = x / r;
return uint128(r < r1 ? r : r1);
}
}
}
}{
"evmVersion": "istanbul",
"optimizer": {
"enabled": true,
"runs": 1
},
"libraries": {
"BufferBinaryOptions.sol": {}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"settlementFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalFee","type":"uint256"}],"name":"Create","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"config","type":"address"},{"indexed":false,"internalType":"address","name":"pool","type":"address"},{"indexed":false,"internalType":"address","name":"tokenX","type":"address"},{"indexed":false,"internalType":"string","name":"token0","type":"string"},{"indexed":false,"internalType":"string","name":"token1","type":"string"},{"indexed":false,"internalType":"enum IBufferBinaryOptions.AssetCategory","name":"category","type":"uint8"}],"name":"CreateOptionsContract","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"profit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"priceAtExpiration","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isAbove","type":"bool"}],"name":"Exercise","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"premium","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"priceAtExpiration","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isAbove","type":"bool"}],"name":"Expire","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"LpLoss","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"LpProfit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isPaused","type":"bool"}],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address","name":"referrer","type":"address"},{"indexed":false,"internalType":"bool","name":"isReferralValid","type":"bool"},{"indexed":false,"internalType":"uint256","name":"totalFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"referrerFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rebate","type":"uint256"},{"indexed":false,"internalType":"string","name":"referralCode","type":"string"}],"name":"UpdateReferral","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PAUSER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROUTER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"referrer","type":"address"},{"internalType":"address","name":"user","type":"address"}],"name":"_getReferralDiscount","outputs":[{"internalType":"uint256","name":"referralDiscount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addressToApprove","type":"address"}],"name":"approveAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"approvePoolToTransferTokenX","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"approvedAddresses","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"assetCategory","outputs":[{"internalType":"enum IBufferBinaryOptions.AssetCategory","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"assetPair","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"config","outputs":[{"internalType":"contract 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Creation Code
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