Contract
0x592c6A6419fB86BAD15926c840A9f9306f69f590
1
Contract Overview
Balance:
0 ETH
ETH Value:
$0.00
My Name Tag:
Not Available
| Txn Hash | Method |
Block
|
From
|
To
|
Value | [Txn Fee] | |||
|---|---|---|---|---|---|---|---|---|---|
| 0x578f4b2a4c60dae2f498a61eaff0196f685c57425be4ad25059dd456e7c09130 | 0x60806040 | 219936 | 314 days 3 hrs ago | 0x904b5993fc92979eeedc19ccc58bed6b7216667c | IN | Create: PoolCreator | 0 ETH | 0.018019652125 ETH |
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
PoolCreator
Compiler Version
v0.7.4+commit.3f05b770
Optimization Enabled:
Yes with 1000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;
import "./KeeperWhitelist.sol";
import "./PoolCreatorV2.sol";
contract PoolCreator is PoolCreatorV2 {
bool public override isUniverseSettled;
uint256 public poolVersion;
uint256 public guardianCount;
mapping(address => bool) public guardians;
event AddGuardian(address indexed account);
event TransferGuardian(address indexed fromAccount, address indexed toAccount);
event RenounceGuardian(address indexed account);
event SetUniverseSettled();
modifier onlyGuardian() {
require(isGuardian(_msgSender()), "sender is not guardian");
_;
}
function isGuardian(address account) public view returns (bool) {
return guardians[account];
}
/**
* @notice Set the guardian who is able to set `isUniverseSettled` flag.
*/
function addGuardian(address account) public onlyOwner {
_addGuardian(account);
}
/**
* @notice Transfer guardian from sender to some account.
*/
function transferGuardian(address toAccount) public onlyGuardian {
require(toAccount != address(0), "guardian is zero address");
require(!isGuardian(toAccount), "guardian is already set");
address fromAccount = _msgSender();
guardians[fromAccount] = false;
guardians[toAccount] = true;
emit TransferGuardian(fromAccount, toAccount);
}
/**
* @notice Renounce guardian.
*/
function renounceGuardian() external onlyGuardian {
address account = _msgSender();
guardians[account] = false;
guardianCount--;
emit RenounceGuardian(account);
}
/**
* @notice Indicates the universe settle state. When called:
* - all the perpetual created by this poolCreator can be settled immediately;
* - all the trading method will be unavailable.
*/
function setUniverseSettled() external onlyGuardian {
require(!isUniverseSettled, "state is not changed");
isUniverseSettled = true;
emit SetUniverseSettled();
}
function _addGuardian(address account) internal {
require(account != address(0), "guardian is zero address");
require(!isGuardian(account), "guardian is already set");
guardians[account] = true;
guardianCount++;
emit AddGuardian(account);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/EnumerableSetUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";
import "../interface/IKeeperWhitelist.sol";
import "../libraries/Utils.sol";
contract KeeperWhitelist is Initializable, OwnableUpgradeable, IKeeperWhitelist {
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;
using Utils for EnumerableSetUpgradeable.AddressSet;
EnumerableSetUpgradeable.AddressSet internal _keepers;
event AddKeeperToWhitelist(address indexed keeper);
event RemoveKeeperFromWhitelist(address indexed keeper);
/**
* @notice Add an address to keeper whitelist.
*/
function addKeeper(address keeper) external virtual override onlyOwner {
require(keeper != address(0), "account is zero-address");
require(!isKeeper(keeper), "keeper is already in the whitelist");
bool success = _keepers.add(keeper);
require(success, "fail to add keeper");
emit AddKeeperToWhitelist(keeper);
}
/**
* @notice Remove an address from keeper whitelist.
*/
function removeKeeper(address keeper) external virtual override onlyOwner {
require(keeper != address(0), "account is zero-address");
require(isKeeper(keeper), "keeper is not in the whitelist");
bool success = _keepers.remove(keeper);
require(success, "fail to remove keeper");
emit RemoveKeeperFromWhitelist(keeper);
}
/**
* @notice Check if an address is in keeper whitelist.
*/
function isKeeper(address keeper) public view virtual override returns (bool) {
return _keepers.contains(keeper);
}
/**
* @notice Get count of current keepers.
* @return Number of keepers.
*/
function getKeeperCount() public view returns (uint256) {
return _keepers.length();
}
/**
* @notice List all local keepers.
* @param begin The begin index of keeper to retrieve.
* @param end The end index of keeper, exclusive.
* @return result An array of keeper addresses.
*/
function listKeepers(uint256 begin, uint256 end)
public
view
virtual
returns (address[] memory)
{
return _keepers.toArray(begin, end);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;
import "./KeeperWhitelist.sol";
import "./PoolCreatorV1.sol";
abstract contract PoolCreatorV2 is PoolCreatorV1, KeeperWhitelist {
/**
* @notice Owner of version control.
*/
function owner() public view override(OwnableUpgradeable, PoolCreatorV1) returns (address) {
return OwnableUpgradeable.owner();
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
uint256[49] private __gap;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSetUpgradeable {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}// SPDX-License-Identifier: MIT
// solhint-disable-next-line compiler-version
pragma solidity >=0.4.24 <0.8.0;
import "../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function _isConstructor() private view returns (bool) {
return !AddressUpgradeable.isContract(address(this));
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
interface IKeeperWhitelist {
/**
* @notice Add an address to keeper whitelist.
*/
function addKeeper(address keeper) external;
/**
* @notice Remove an address from keeper whitelist.
*/
function removeKeeper(address keeper) external;
/**
* @notice Check if an address is in keeper whitelist.
*/
function isKeeper(address keeper) external view returns (bool);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts/utils/EnumerableSet.sol";
import "@openzeppelin/contracts-upgradeable/utils/EnumerableSetUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/math/SignedSafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";
import "./SafeMathExt.sol";
library Utils {
using SafeMathExt for int256;
using SafeMathExt for uint256;
using SafeMathUpgradeable for uint256;
using SignedSafeMathUpgradeable for int256;
using EnumerableSet for EnumerableSet.AddressSet;
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.Bytes32Set;
/*
* @dev Check if two numbers have the same sign. Zero has the same sign with any number
*/
function hasTheSameSign(int256 x, int256 y) internal pure returns (bool) {
if (x == 0 || y == 0) {
return true;
}
return (x ^ y) >> 255 == 0;
}
/**
* @dev Check if the trader has opened position in the trade.
* Example: 2, 1 => true; 2, -1 => false; -2, -3 => true
* @param amount The position of the trader after the trade
* @param delta The update position amount of the trader after the trade
* @return True if the trader has opened position in the trade
*/
function hasOpenedPosition(int256 amount, int256 delta) internal pure returns (bool) {
if (amount == 0) {
return false;
}
return Utils.hasTheSameSign(amount, delta);
}
/*
* @dev Split the delta to two numbers.
* Use for splitting the trading amount to the amount to close position and the amount to open position.
* Examples: 2, 1 => 0, 1; 2, -1 => -1, 0; 2, -3 => -2, -1
*/
function splitAmount(int256 amount, int256 delta) internal pure returns (int256, int256) {
if (Utils.hasTheSameSign(amount, delta)) {
return (0, delta);
} else if (amount.abs() >= delta.abs()) {
return (delta, 0);
} else {
return (amount.neg(), amount.add(delta));
}
}
/*
* @dev Check if amount will be away from zero or cross zero if added the delta.
* Use for checking if trading amount will make trader open position.
* Example: 2, 1 => true; 2, -1 => false; 2, -3 => true
*/
function isOpen(int256 amount, int256 delta) internal pure returns (bool) {
return Utils.hasTheSameSign(amount, delta) || amount.abs() < delta.abs();
}
/*
* @dev Get the id of the current chain
*/
function chainID() internal pure returns (uint256 id) {
assembly {
id := chainid()
}
}
// function toArray(
// EnumerableSet.AddressSet storage set,
// uint256 begin,
// uint256 end
// ) internal view returns (address[] memory result) {
// require(end > begin, "begin should be lower than end");
// uint256 length = set.length();
// if (begin >= length) {
// return result;
// }
// uint256 safeEnd = end.min(length);
// result = new address[](safeEnd.sub(begin));
// for (uint256 i = begin; i < safeEnd; i++) {
// result[i.sub(begin)] = set.at(i);
// }
// return result;
// }
function toArray(
EnumerableSetUpgradeable.AddressSet storage set,
uint256 begin,
uint256 end
) internal view returns (address[] memory result) {
require(end > begin, "begin should be lower than end");
uint256 length = set.length();
if (begin >= length) {
return result;
}
uint256 safeEnd = end.min(length);
result = new address[](safeEnd.sub(begin));
for (uint256 i = begin; i < safeEnd; i++) {
result[i.sub(begin)] = set.at(i);
}
return result;
}
function toArray(
EnumerableSetUpgradeable.Bytes32Set storage set,
uint256 begin,
uint256 end
) internal view returns (bytes32[] memory result) {
require(end > begin, "begin should be lower than end");
uint256 length = set.length();
if (begin >= length) {
return result;
}
uint256 safeEnd = end.min(length);
result = new bytes32[](safeEnd.sub(begin));
for (uint256 i = begin; i < safeEnd; i++) {
result[i.sub(begin)] = set.at(i);
}
return result;
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../proxy/Initializable.sol";
/*
* @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 GSN 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 ContextUpgradeable is Initializable {
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 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");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @title SignedSafeMath
* @dev Signed math operations with safety checks that revert on error.
*/
library SignedSafeMathUpgradeable {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Returns the multiplication of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two signed integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Returns the subtraction of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Returns the addition of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMathUpgradeable {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/math/SignedSafeMathUpgradeable.sol";
import "./Constant.sol";
import "./Utils.sol";
enum Round {
CEIL,
FLOOR
}
library SafeMathExt {
using SafeMathUpgradeable for uint256;
using SignedSafeMathUpgradeable for int256;
/*
* @dev Always half up for uint256
*/
function wmul(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x.mul(y).add(Constant.UNSIGNED_ONE / 2) / Constant.UNSIGNED_ONE;
}
/*
* @dev Always half up for uint256
*/
function wdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x.mul(Constant.UNSIGNED_ONE).add(y / 2).div(y);
}
/*
* @dev Always half up for uint256
*/
function wfrac(
uint256 x,
uint256 y,
uint256 z
) internal pure returns (uint256 r) {
r = x.mul(y).add(z / 2).div(z);
}
/*
* @dev Always half up if no rounding parameter
*/
function wmul(int256 x, int256 y) internal pure returns (int256 z) {
z = roundHalfUp(x.mul(y), Constant.SIGNED_ONE) / Constant.SIGNED_ONE;
}
/*
* @dev Always half up if no rounding parameter
*/
function wdiv(int256 x, int256 y) internal pure returns (int256 z) {
if (y < 0) {
y = neg(y);
x = neg(x);
}
z = roundHalfUp(x.mul(Constant.SIGNED_ONE), y).div(y);
}
/*
* @dev Always half up if no rounding parameter
*/
function wfrac(
int256 x,
int256 y,
int256 z
) internal pure returns (int256 r) {
int256 t = x.mul(y);
if (z < 0) {
z = neg(z);
t = neg(t);
}
r = roundHalfUp(t, z).div(z);
}
function wmul(
int256 x,
int256 y,
Round round
) internal pure returns (int256 z) {
z = div(x.mul(y), Constant.SIGNED_ONE, round);
}
function wdiv(
int256 x,
int256 y,
Round round
) internal pure returns (int256 z) {
z = div(x.mul(Constant.SIGNED_ONE), y, round);
}
function wfrac(
int256 x,
int256 y,
int256 z,
Round round
) internal pure returns (int256 r) {
int256 t = x.mul(y);
r = div(t, z, round);
}
function abs(int256 x) internal pure returns (int256) {
return x >= 0 ? x : neg(x);
}
function neg(int256 a) internal pure returns (int256) {
return SignedSafeMathUpgradeable.sub(int256(0), a);
}
/*
* @dev ROUND_HALF_UP rule helper.
* You have to call roundHalfUp(x, y) / y to finish the rounding operation.
* 0.5 ≈ 1, 0.4 ≈ 0, -0.5 ≈ -1, -0.4 ≈ 0
*/
function roundHalfUp(int256 x, int256 y) internal pure returns (int256) {
require(y > 0, "roundHalfUp only supports y > 0");
if (x >= 0) {
return x.add(y / 2);
}
return x.sub(y / 2);
}
/*
* @dev Division, rounding ceil or rounding floor
*/
function div(
int256 x,
int256 y,
Round round
) internal pure returns (int256 divResult) {
require(y != 0, "division by zero");
divResult = x.div(y);
if (x % y == 0) {
return divResult;
}
bool isSameSign = Utils.hasTheSameSign(x, y);
if (round == Round.CEIL && isSameSign) {
divResult = divResult.add(1);
}
if (round == Round.FLOOR && !isSameSign) {
divResult = divResult.sub(1);
}
}
function max(int256 a, int256 b) internal pure returns (int256) {
return a >= b ? a : b;
}
function min(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
library Constant {
address internal constant INVALID_ADDRESS = address(0);
int256 internal constant SIGNED_ONE = 10**18;
uint256 internal constant UNSIGNED_ONE = 10**18;
uint256 internal constant PRIVILEGE_DEPOSIT = 0x1;
uint256 internal constant PRIVILEGE_WITHDRAW = 0x2;
uint256 internal constant PRIVILEGE_TRADE = 0x4;
uint256 internal constant PRIVILEGE_LIQUIDATE = 0x8;
uint256 internal constant PRIVILEGE_GUARD =
PRIVILEGE_DEPOSIT | PRIVILEGE_WITHDRAW | PRIVILEGE_TRADE | PRIVILEGE_LIQUIDATE;
// max number of uint256
uint256 internal constant SET_ALL_PERPETUALS_TO_EMERGENCY_STATE =
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";
import "@openzeppelin/contracts/proxy/TransparentUpgradeableProxy.sol";
import "@openzeppelin/contracts/proxy/ProxyAdmin.sol";
import "../interface/IGovernor.sol";
import "../interface/ILiquidityPool.sol";
import "../interface/IProxyAdmin.sol";
import "../interface/IPoolCreator.sol";
import "./Tracer.sol";
import "./VersionControl.sol";
import "./Variables.sol";
import "./AccessControl.sol";
abstract contract PoolCreatorV1 is
Initializable,
Tracer,
VersionControl,
Variables,
AccessControl,
IPoolCreator
{
using AddressUpgradeable for address;
IProxyAdmin public override upgradeAdmin;
event CreateLiquidityPool(
bytes32 versionKey,
address indexed liquidityPool,
address indexed governor,
address indexed operator,
address shareToken, // downward compatibility for offline infrastructure
address collateral,
uint256 collateralDecimals,
bytes initData
);
event UpgradeLiquidityPool(
bytes32 versionKey,
address indexed liquidityPool,
address indexed governor
);
function initialize(
address symbolService,
address globalVault,
int256 globalVaultFeeRate
) external initializer {
__Ownable_init();
__Variables_init(symbolService, globalVault, globalVaultFeeRate);
upgradeAdmin = IProxyAdmin(address(new ProxyAdmin()));
}
/**
* @notice Owner of version control.
*/
function owner() public view virtual override(VersionControl, Variables) returns (address) {
return OwnableUpgradeable.owner();
}
/**
* @notice Create a liquidity pool with the latest version.
* The sender will be the operator of pool.
*
* @param collateral he collateral address of the liquidity pool.
* @param collateralDecimals The collateral's decimals of the liquidity pool.
* @param nonce A random nonce to calculate the address of deployed contracts.
* @param initData A bytes array contains data to initialize new created liquidity pool.
* @return liquidityPool The address of the created liquidity pool.
*/
function createLiquidityPool(
address collateral,
uint256 collateralDecimals,
int256 nonce,
bytes calldata initData
) external override returns (address liquidityPool, address governor) {
(liquidityPool, governor) = _createLiquidityPoolWith(
getLatestVersion(),
collateral,
collateralDecimals,
nonce,
initData
);
}
// /**
// * @notice Create a liquidity pool with the specific version. The operator will be the sender.
// *
// * @param versionKey The key of the version to create.
// * @param collateral The collateral address of the liquidity pool.
// * @param collateralDecimals The collateral's decimals of the liquidity pool.
// * @param nonce A random nonce to calculate the address of deployed contracts.
// * @param initData A bytes array contains data to initialize new created liquidity pool.
// * @return liquidityPool The address of the created liquidity pool.
// * @return governor The address of the created governor.
// */
// function createLiquidityPoolWith(
// bytes32 versionKey,
// address collateral,
// uint256 collateralDecimals,
// int256 nonce,
// bytes memory initData
// ) external override returns (address liquidityPool, address governor) {
// (liquidityPool, governor) = _createLiquidityPoolWith(
// versionKey,
// collateral,
// collateralDecimals,
// nonce,
// initData
// );
// }
/**
* @notice Upgrade a liquidity pool and governor pair then call a patch function on the upgraded contract (optional).
* This method checks the sender and forwards the request to ProxyAdmin to do upgrading.
*
* @param targetVersionKey The key of version to be upgrade up. The target version must be compatiable with
* current version.
* @param dataForLiquidityPool The patch calldata for upgraded liquidity pool.
* @param dataForGovernor The patch calldata of upgraded governor.
*/
function upgradeToAndCall(
bytes32 targetVersionKey,
bytes memory dataForLiquidityPool,
bytes memory dataForGovernor
) external override {
(
address liquidityPool,
address governor,
address liquidityPoolTemplate,
address governorTemplate
) = _getUpgradeContext(targetVersionKey);
if (dataForLiquidityPool.length > 0) {
upgradeAdmin.upgradeAndCall(liquidityPool, liquidityPoolTemplate, dataForLiquidityPool);
} else {
upgradeAdmin.upgrade(liquidityPool, liquidityPoolTemplate);
}
if (dataForGovernor.length > 0) {
upgradeAdmin.upgradeAndCall(governor, governorTemplate, dataForGovernor);
} else {
upgradeAdmin.upgrade(governor, governorTemplate);
}
_updateDeployedInstances(targetVersionKey, liquidityPool, governor);
emit UpgradeLiquidityPool(targetVersionKey, liquidityPool, governor);
}
/**
* @dev Create a liquidity pool with the specific version. The operator will be the sender.
*
* @param versionKey The address of version
* @param collateral The collateral address of the liquidity pool.
* @param collateralDecimals The collateral's decimals of the liquidity pool.
* @param nonce A random nonce to calculate the address of deployed contracts.
* @param initData A bytes array contains data to initialize new created liquidity pool.
* @return liquidityPool The address of the created liquidity pool.
* @return governor The address of the created governor.
*/
function _createLiquidityPoolWith(
bytes32 versionKey,
address collateral,
uint256 collateralDecimals,
int256 nonce,
bytes memory initData
) internal returns (address liquidityPool, address governor) {
require(isVersionKeyValid(versionKey), "invalid version");
// initialize
address operator = msg.sender;
(address liquidityPoolTemplate, address governorTemplate, ) = getVersion(versionKey);
bytes32 salt = keccak256(abi.encode(versionKey, collateral, initData, nonce));
liquidityPool = _createUpgradeableProxy(liquidityPoolTemplate, salt);
governor = _createUpgradeableProxy(governorTemplate, salt);
ILiquidityPool(liquidityPool).initialize(
operator,
collateral,
collateralDecimals,
governor,
initData
);
IGovernor(governor).initialize(
"MCDEX Share Token",
"STK",
liquidityPool,
liquidityPool,
getMCBToken(),
address(this)
);
// register pool to tracer
_registerLiquidityPool(liquidityPool, operator);
_updateDeployedInstances(versionKey, liquidityPool, governor);
// [EVENT UPDATE]
emit CreateLiquidityPool(
versionKey,
liquidityPool,
governor,
operator,
governor,
collateral,
collateralDecimals,
initData
);
}
/**
* @dev Create an upgradeable proxy contract of the implementation of liquidity pool.
*
* @param implementation The address of the implementation.
* @param salt The random number for create2.
* @return instance The address of the created upgradeable proxy contract.
*/
function _createUpgradeableProxy(address implementation, bytes32 salt)
internal
returns (address instance)
{
require(implementation.isContract(), "implementation must be contract");
bytes memory deploymentData = abi.encodePacked(
type(TransparentUpgradeableProxy).creationCode,
abi.encode(implementation, address(upgradeAdmin), "")
);
assembly {
instance := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(instance != address(0), "create2 call failed");
}
/**
* @dev Validate sender:
* - the transaction must be sent from a governor.
* - the sender governor and its liquidity pool must be already registered.
* - the target version must be compatible with the current version.
*/
function _getUpgradeContext(bytes32 targetVersionKey)
internal
view
returns (
address liquidityPool,
address governor,
address liquidityPoolTemplate,
address governorTemplate
)
{
governor = _msgSender();
require(governor.isContract(), "sender must be a contract");
liquidityPool = IGovernor(governor).getTarget();
require(isLiquidityPool(liquidityPool), "sender is not the governor of a registered pool");
bytes32 deployedAddressHash = _getVersionHash(liquidityPool, governor);
bytes32 baseVersionKey = _deployedVersions[deployedAddressHash];
require(
isVersionCompatible(targetVersionKey, baseVersionKey),
"the target version is not compatible"
);
(liquidityPoolTemplate, governorTemplate, ) = getVersion(targetVersionKey);
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./UpgradeableProxy.sol";
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
*/
contract TransparentUpgradeableProxy is UpgradeableProxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
*/
constructor(address _logic, address admin_, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_setAdmin(admin_);
}
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _admin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external virtual ifAdmin {
require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external virtual ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable virtual ifAdmin {
_upgradeTo(newImplementation);
Address.functionDelegateCall(newImplementation, data);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view virtual returns (address adm) {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
adm := sload(slot)
}
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal virtual override {
require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../access/Ownable.sol";
import "./TransparentUpgradeableProxy.sol";
/**
* @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
* explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
*/
contract ProxyAdmin is Ownable {
/**
* @dev Returns the current implementation of `proxy`.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function getProxyImplementation(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("implementation()")) == 0x5c60da1b
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Returns the current admin of `proxy`.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function getProxyAdmin(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("admin()")) == 0xf851a440
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Changes the admin of `proxy` to `newAdmin`.
*
* Requirements:
*
* - This contract must be the current admin of `proxy`.
*/
function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public virtual onlyOwner {
proxy.changeAdmin(newAdmin);
}
/**
* @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgrade(TransparentUpgradeableProxy proxy, address implementation) public virtual onlyOwner {
proxy.upgradeTo(implementation);
}
/**
* @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
* {TransparentUpgradeableProxy-upgradeToAndCall}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgradeAndCall(TransparentUpgradeableProxy proxy, address implementation, bytes memory data) public payable virtual onlyOwner {
proxy.upgradeToAndCall{value: msg.value}(implementation, data);
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IGovernor {
function initialize(
string memory name,
string memory symbol,
address minter,
address target_,
address rewardToken,
address poolCreator
) external;
function totalSupply() external view returns (uint256);
function getTarget() external view returns (address);
function mint(address account, uint256 amount) external;
function burn(address account, uint256 amount) external;
function balanceOf(address account) external view returns (uint256);
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;
import "../Type.sol";
interface ILiquidityPool {
/**
* @notice Initialize the liquidity pool and set up its configuration.
*
* @param operator The operator's address of the liquidity pool.
* @param collateral The collateral's address of the liquidity pool.
* @param collateralDecimals The collateral's decimals of the liquidity pool.
* @param governor The governor's address of the liquidity pool.
* @param initData A bytes array contains data to initialize new created liquidity pool.
*/
function initialize(
address operator,
address collateral,
uint256 collateralDecimals,
address governor,
bytes calldata initData
) external;
/**
* @notice Set the liquidity pool to running state. Can be call only once by operater.m n
*/
function runLiquidityPool() external;
/**
* @notice If you want to get the real-time data, call this function first
*/
function forceToSyncState() external;
/**
* @notice Add liquidity to the liquidity pool.
* Liquidity provider deposits collaterals then gets share tokens back.
* The ratio of added cash to share token is determined by current liquidity.
* Can only called when the pool is running.
*
* @param cashToAdd The amount of cash to add. always use decimals 18.
*/
function addLiquidity(int256 cashToAdd) external;
/**
* @notice Remove liquidity from the liquidity pool.
* Liquidity providers redeems share token then gets collateral back.
* The amount of collateral retrieved may differ from the amount when adding liquidity,
* The index price, trading fee and positions holding by amm will affect the profitability of providers.
* Can only called when the pool is running.
*
* @param shareToRemove The amount of share token to remove. The amount always use decimals 18.
* @param cashToReturn The amount of cash(collateral) to return. The amount always use decimals 18.
*/
function removeLiquidity(int256 shareToRemove, int256 cashToReturn) external;
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
interface IProxyAdmin {
function getProxyImplementation(address proxy) external view returns (address);
/**
* @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgrade(address proxy, address implementation) external;
/**
* @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
* {TransparentUpgradeableProxy-upgradeToAndCall}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgradeAndCall(
address proxy,
address implementation,
bytes memory data
) external payable;
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
import "./IProxyAdmin.sol";
interface IPoolCreator {
function upgradeAdmin() external view returns (IProxyAdmin proxyAdmin);
/**
* @notice Create a liquidity pool with the latest version.
* The sender will be the operator of pool.
*
* @param collateral he collateral address of the liquidity pool.
* @param collateralDecimals The collateral's decimals of the liquidity pool.
* @param nonce A random nonce to calculate the address of deployed contracts.
* @param initData A bytes array contains data to initialize new created liquidity pool.
* @return liquidityPool The address of the created liquidity pool.
*/
function createLiquidityPool(
address collateral,
uint256 collateralDecimals,
int256 nonce,
bytes calldata initData
) external returns (address liquidityPool, address governor);
/**
* @notice Upgrade a liquidity pool and governor pair then call a patch function on the upgraded contract (optional).
* This method checks the sender and forwards the request to ProxyAdmin to do upgrading.
*
* @param targetVersionKey The key of version to be upgrade up. The target version must be compatible with
* current version.
* @param dataForLiquidityPool The patch calldata for upgraded liquidity pool.
* @param dataForGovernor The patch calldata of upgraded governor.
*/
function upgradeToAndCall(
bytes32 targetVersionKey,
bytes memory dataForLiquidityPool,
bytes memory dataForGovernor
) external;
/**
* @notice Indicates the universe settle state.
* If the flag set to true:
* - all the pereptual created by this poolCreator can be settled immediately;
* - all the trading method will be unavailable.
*/
function isUniverseSettled() external view returns (bool);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/EnumerableSet.sol";
import "../libraries/SafeMathExt.sol";
import "../libraries/Utils.sol";
contract Tracer {
using SafeMath for uint256;
using SafeMathExt for uint256;
using Utils for EnumerableSetUpgradeable.AddressSet;
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.Bytes32Set;
struct PerpetualUID {
address liquidityPool;
uint256 perpetualIndex;
}
// liquidity pool address[]
EnumerableSetUpgradeable.AddressSet internal _liquidityPoolSet;
// hash(puid) => PerpetualUID {}
mapping(bytes32 => PerpetualUID) internal _perpetualUIDs;
// trader => hash(puid) []
mapping(address => EnumerableSetUpgradeable.Bytes32Set) internal _traderActiveLiquidityPools;
// operator => address
mapping(address => EnumerableSetUpgradeable.AddressSet) internal _operatorOwnedLiquidityPools;
mapping(address => address) internal _liquidityPoolOwners;
modifier onlyLiquidityPool() {
require(isLiquidityPool(msg.sender), "caller is not liquidity pool instance");
_;
}
// =========================== Liquidity Pool ===========================
/**
* @notice Get the number of all liquidity pools.
*
* @return uint256 The number of all liquidity pools
*/
function getLiquidityPoolCount() public view returns (uint256) {
return _liquidityPoolSet.length();
}
/**
* @notice Check if the liquidity pool exists.
*
* @param liquidityPool The address of the liquidity pool.
* @return True if the liquidity pool exists.
*/
function isLiquidityPool(address liquidityPool) public view returns (bool) {
return _liquidityPoolSet.contains(liquidityPool);
}
/**
* @notice Get the liquidity pools whose index between begin and end.
*
* @param begin The begin index.
* @param end The end index.
* @return result An array of liquidity pool addresses whose index between begin and end.
*/
function listLiquidityPools(uint256 begin, uint256 end)
public
view
returns (address[] memory result)
{
result = _liquidityPoolSet.toArray(begin, end);
}
/**
* @notice Get the number of the liquidity pools owned by the operator.
*
* @param operator The address of operator.
* @return uint256 The number of the liquidity pools owned by the operator.
*/
function getOwnedLiquidityPoolsCountOf(address operator) public view returns (uint256) {
return _operatorOwnedLiquidityPools[operator].length();
}
/**
* @notice Get the liquidity pools owned by the operator and whose index between begin and end.
*
* @param operator The address of the operator.
* @param begin The begin index.
* @param end The end index.
* @return result The liquidity pools owned by the operator and whose index between begin and end.
*/
function listLiquidityPoolOwnedBy(
address operator,
uint256 begin,
uint256 end
) public view returns (address[] memory result) {
return _operatorOwnedLiquidityPools[operator].toArray(begin, end);
}
/**
* @notice Liquidity pool must call this method when changing its ownership to the new operator.
* Can only be called by a liquidity pool. This method does not affect 'ownership' or privileges
* of operator but only make a record for further query.
*
* @param liquidityPool The address of the liquidity pool.
* @param operator The address of the new operator, must be different from the old operator.
*/
function registerOperatorOfLiquidityPool(address liquidityPool, address operator)
public
onlyLiquidityPool
{
address prevOperator = _liquidityPoolOwners[liquidityPool];
_operatorOwnedLiquidityPools[prevOperator].remove(liquidityPool);
_operatorOwnedLiquidityPools[operator].add(liquidityPool);
_liquidityPoolOwners[liquidityPool] = operator;
}
/**
* @dev Record the liquidity pool, the liquidity pool should not be recorded before
*
* @param liquidityPool The address of the liquidity pool.
* @param operator The address of operator.
*/
function _registerLiquidityPool(address liquidityPool, address operator) internal {
require(liquidityPool != address(0), "invalid liquidity pool address");
bool success = _liquidityPoolSet.add(liquidityPool);
require(success, "liquidity pool exists");
_operatorOwnedLiquidityPools[operator].add(liquidityPool);
_liquidityPoolOwners[liquidityPool] = operator;
}
// =========================== Active Liquidity Pool of Trader ===========================
/**
* @notice Get the number of the trader's active liquidity pools. Active means the trader's account is
* not all empty in perpetuals of the liquidity pool. Empty means cash and position are zero.
*
* @param trader The address of the trader.
* @return Number of the trader's active liquidity pools.
*/
function getActiveLiquidityPoolCountOf(address trader) public view returns (uint256) {
return _traderActiveLiquidityPools[trader].length();
}
/**
* @notice Check if the perpetual is active for the trader. Active means the trader's account is
* not empty in the perpetual. Empty means cash and position are zero.
*
* @param trader The address of the trader.
* @param liquidityPool The address of liquidity pool.
* @param perpetualIndex The index of the perpetual in the liquidity pool.
* @return True if the perpetual is active for the trader.
*/
function isActiveLiquidityPoolOf(
address trader,
address liquidityPool,
uint256 perpetualIndex
) public view returns (bool) {
return
_traderActiveLiquidityPools[trader].contains(
_getPerpetualKey(liquidityPool, perpetualIndex)
);
}
/**
* @notice Get the liquidity pools whose index between begin and end and active for the trader.
* Active means the trader's account is not all empty in perpetuals of the liquidity pool.
* Empty means cash and position are zero.
*
* @param trader The address of the trader.
* @param begin The begin index.
* @param end The end index.
* @return result An array of active (non-empty margin account) liquidity pool address and perpetul index.
*/
function listActiveLiquidityPoolsOf(
address trader,
uint256 begin,
uint256 end
) public view returns (PerpetualUID[] memory result) {
require(end > begin, "begin should be lower than end");
uint256 length = _traderActiveLiquidityPools[trader].length();
if (begin >= length) {
return result;
}
uint256 safeEnd = end.min(length);
result = new PerpetualUID[](safeEnd.sub(begin));
for (uint256 i = begin; i < safeEnd; i++) {
result[i.sub(begin)] = _perpetualUIDs[_traderActiveLiquidityPools[trader].at(i)];
}
return result;
}
/**
* @notice Activate the perpetual for the trader. Active means the trader's account is not empty in
* the perpetual. Empty means cash and position are zero. Can only called by a liquidity pool.
*
* @param trader The address of the trader.
* @param perpetualIndex The index of the perpetual in the liquidity pool.
* @return True if the activation is successful.
*/
function activatePerpetualFor(address trader, uint256 perpetualIndex)
external
onlyLiquidityPool
returns (bool)
{
bytes32 key = _getPerpetualKey(msg.sender, perpetualIndex);
if (_perpetualUIDs[key].liquidityPool == address(0)) {
_perpetualUIDs[key] = PerpetualUID({
liquidityPool: msg.sender,
perpetualIndex: perpetualIndex
});
}
return _traderActiveLiquidityPools[trader].add(key);
}
/**
* @notice Deactivate the perpetual for the trader. Active means the trader's account is not empty in
* the perpetual. Empty means cash and position are zero. Can only called by a liquidity pool.
*
* @param trader The address of the trader.
* @param perpetualIndex The index of the perpetual in the liquidity pool.
* @return True if the deactivation is successful.
*/
function deactivatePerpetualFor(address trader, uint256 perpetualIndex)
external
onlyLiquidityPool
returns (bool)
{
return
_traderActiveLiquidityPools[trader].remove(
_getPerpetualKey(msg.sender, perpetualIndex)
);
}
// =========================== Active Liquidity Pool of Trader ===========================
/**
* @dev Get the key of the perpetual
* @param liquidityPool The address of the liquidity pool which the perpetual belongs to.
* @param perpetualIndex The index of the perpetual in the liquidity pool.
* @return Key hash of the perpetual.
*/
function _getPerpetualKey(address liquidityPool, uint256 perpetualIndex)
internal
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(liquidityPool, perpetualIndex));
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/EnumerableSetUpgradeable.sol";
import "../interface/IUpgradeableProxy.sol";
import "../interface/IVersionControl.sol";
import "../libraries/SafeMathExt.sol";
contract VersionControl is OwnableUpgradeable, IVersionControl {
using Utils for EnumerableSetUpgradeable.Bytes32Set;
using SafeMathExt for uint256;
using AddressUpgradeable for address;
using SafeMathUpgradeable for uint256;
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.Bytes32Set;
struct VersionDescription {
address liquidityPoolTemplate;
address governorTemplate;
uint256 compatibility;
}
EnumerableSetUpgradeable.Bytes32Set internal _versionKeys;
mapping(bytes32 => VersionDescription) internal _versionDescriptions;
mapping(bytes32 => bytes32) internal _deployedVersions;
event AddVersion(
bytes32 versionKey,
address indexed liquidityPoolTemplate,
address indexed governorTemplate,
address indexed creator,
uint256 compatibility,
string note
);
/**
* @notice Owner of version control.
*/
function owner()
public
view
virtual
override(IVersionControl, OwnableUpgradeable)
returns (address)
{
return OwnableUpgradeable.owner();
}
/**
* @notice Create a new version with template of liquidity pool and governor.
*
* @param liquidityPoolTemplate The address of the liquidityPool implementation.
* @param governorTemplate The address of the governor implementation.
* @param compatibility The compatibility of the implementation
* @param note The note of the version, only in log.
* @return versionKey The key of the version added.
*/
function addVersion(
address liquidityPoolTemplate,
address governorTemplate,
uint256 compatibility,
string calldata note
) external onlyOwner returns (bytes32 versionKey) {
require(liquidityPoolTemplate.isContract(), "implementation must be contract");
require(governorTemplate.isContract(), "implementation must be contract");
versionKey = _getVersionHash(liquidityPoolTemplate, governorTemplate);
require(!isVersionKeyValid(versionKey), "implementation already exists");
_versionDescriptions[versionKey] = VersionDescription({
liquidityPoolTemplate: liquidityPoolTemplate,
governorTemplate: governorTemplate,
compatibility: compatibility
});
_versionKeys.add(versionKey);
emit AddVersion(
versionKey,
liquidityPoolTemplate,
governorTemplate,
msg.sender,
compatibility,
note
);
}
/**
* @notice Get the latest created key of template. Revert if there is no key yet.
*
* @return latestVersionKey The key of the latest template of liquidity pool and governor.
*/
function getLatestVersion() public view override returns (bytes32 latestVersionKey) {
require(_versionKeys.length() > 0, "no version");
latestVersionKey = _versionKeys.at(_versionKeys.length() - 1);
}
/**
* @notice Get the details of the version.
*
* @param versionKey The key of the version to get.
* @return liquidityPoolTemplate The address of the liquidity pool template.
* @return governorTemplate The address of the governor template.
* @return compatibility The compatibility of the specified version.
*/
function getVersion(bytes32 versionKey)
public
view
override
returns (
address liquidityPoolTemplate,
address governorTemplate,
uint256 compatibility
)
{
require(isVersionKeyValid(versionKey), "implementation is invalid");
VersionDescription storage version = _versionDescriptions[versionKey];
liquidityPoolTemplate = version.liquidityPoolTemplate;
governorTemplate = version.governorTemplate;
compatibility = version.compatibility;
}
/**
* @notice Get the description of the implementation of liquidity pool.
* Description contains creator, create time, compatibility and note
*
* @param liquidityPool The address of the liquidity pool.
* @param governor The address of the governor.
* @return appliedVersionKey The version key of given liquidity pool and governor.
*/
function getAppliedVersionKey(address liquidityPool, address governor)
external
view
override
returns (bytes32 appliedVersionKey)
{
bytes32 deployedAddressHash = _getVersionHash(liquidityPool, governor);
appliedVersionKey = _deployedVersions[deployedAddressHash];
}
/**
* @notice Check if a key is valid (exists).
*
* @param versionKey The key of the version to test.
* @return isValid Return true if the version of given key is valid.
*/
function isVersionKeyValid(bytes32 versionKey) public view override returns (bool isValid) {
isValid = _versionKeys.contains(versionKey);
}
/**
* @notice Check if the implementation of liquidity pool target is compatible with the implementation base.
* Being compatible means having larger compatibility.
*
* @param targetVersionKey The key of the version to be upgraded to.
* @param baseVersionKey The key of the version to be upgraded from.
* @return isCompatible True if the target version is compatible with the base version.
*/
function isVersionCompatible(bytes32 targetVersionKey, bytes32 baseVersionKey)
public
view
override
returns (bool isCompatible)
{
require(isVersionKeyValid(targetVersionKey), "target version is invalid");
require(isVersionKeyValid(baseVersionKey), "base version is invalid");
isCompatible =
_versionDescriptions[targetVersionKey].compatibility >=
_versionDescriptions[baseVersionKey].compatibility;
}
/**
* @dev Get a certain number of implementations of liquidity pool within range [begin, end).
*
* @param begin The index of first element to retrieve.
* @param end The end index of element, exclusive.
* @return versionKeys An array contains current version keys.
*/
function listAvailableVersions(uint256 begin, uint256 end)
external
view
override
returns (bytes32[] memory versionKeys)
{
versionKeys = _versionKeys.toArray(begin, end);
}
function _getVersionHash(address liquidityPoolTemplate, address governorTemplate)
internal
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(liquidityPoolTemplate, governorTemplate));
}
function _updateDeployedInstances(
bytes32 versionKeys,
address liquidityPool,
address governor
) internal {
bytes32 deployedAddressHash = _getVersionHash(liquidityPool, governor);
_deployedVersions[deployedAddressHash] = versionKeys;
}
function _validateUpgradeVersion(
bytes32 targetVersionKey,
address liquidityPool,
address governor
) internal view {
bytes32 deployedAddressHash = _getVersionHash(liquidityPool, governor);
bytes32 baseVersionKey = _deployedVersions[deployedAddressHash];
require(
isVersionCompatible(targetVersionKey, baseVersionKey),
"the target version is not compatible"
);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";
import "../interface/IVariables.sol";
contract Variables is Initializable, OwnableUpgradeable, IVariables {
bytes32 internal _reserved1;
address internal _symbolService;
address internal _vault;
int256 internal _vaultFeeRate;
event SetVaultFeeRate(int256 prevFeeRate, int256 newFeeRate);
event SetVault(address previousVault, address newVault);
event SetKeeper(address previousKeeper, address newKeeper);
event SetRewardDistributor(address previousRewardDistributor, address newRewardDistributor);
function __Variables_init(
address symbolService_,
address vault_,
int256 vaultFeeRate_
) internal initializer {
require(symbolService_ != address(0), "invalid symbol service address");
require(vault_ != address(0), "invalid vault address");
require(vaultFeeRate_ >= 0, "negative vault fee rate");
_symbolService = symbolService_;
_vault = vault_;
_vaultFeeRate = vaultFeeRate_;
}
/**
* @notice Owner of version control.
*/
function owner()
public
view
virtual
override(IVariables, OwnableUpgradeable)
returns (address)
{
return OwnableUpgradeable.owner();
}
/**
* @notice Get the address of the vault
* @return address The address of the vault
*/
function getVault() public view override returns (address) {
return _vault;
}
/**
* @notice Get the vault fee rate
* @return int256 The vault fee rate
*/
function getVaultFeeRate() public view override returns (int256) {
return _vaultFeeRate;
}
/**
* @notice Set the vault address. Can only called by owner(dao).
*
* @param newVault The new value of the vault fee rate
*/
function setVault(address newVault) external override onlyOwner {
require(newVault != address(0), "new vault is zero-address");
require(_vault != newVault, "new vault is already current vault");
emit SetVault(_vault, newVault);
_vault = newVault;
}
/**
* @notice Set the vault fee rate. Can only called by owner(dao).
*
* @param newVaultFeeRate The new value of the vault fee rate
*/
function setVaultFeeRate(int256 newVaultFeeRate) external override onlyOwner {
require(newVaultFeeRate >= 0, "negative vault fee rate");
require(newVaultFeeRate != _vaultFeeRate, "unchanged vault fee rate");
emit SetVaultFeeRate(_vaultFeeRate, newVaultFeeRate);
_vaultFeeRate = newVaultFeeRate;
}
/**
* @notice Get the address of the access controller. It's always its own address.
*
* @return address The address of the access controller.
*/
function getAccessController() external view override returns (address) {
return address(this);
}
/**
* @notice Get the address of the symbol service.
*
* @return Address The address of the symbol service.
*/
function getSymbolService() external view override returns (address) {
return _symbolService;
}
/**
* @notice Get the address of the mcb token.
* @dev [ConfirmBeforeDeployment]
*
* @return Address The address of the mcb token.
*/
function getMCBToken() public pure override returns (address) {
return address(0x4e352cF164E64ADCBad318C3a1e222E9EBa4Ce42);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "../libraries/EnumerableMapExt.sol";
import "../libraries/BitwiseMath.sol";
import "../libraries/Constant.sol";
import "../interface/IAccessControl.sol";
contract AccessControl is IAccessControl {
using BitwiseMath for uint256;
using EnumerableMapExt for EnumerableMapExt.AddressToUintMap;
mapping(address => EnumerableMapExt.AddressToUintMap) internal _accessControls;
// privilege
event GrantPrivilege(address indexed grantor, address indexed grantee, uint256 privilege);
event RevokePrivilege(address indexed grantor, address indexed grantee, uint256 privilege);
/**
* @notice Grant the grantee the privilege by sender.
* There are three kinds of privilege: deposit, withdraw and trade.
*
* @param grantee The address of the grantee.
* @param privilege The privilege to grant.
*/
function grantPrivilege(address grantee, uint256 privilege) external override {
require(_isValid(privilege), "privilege is invalid");
require(!isGranted(msg.sender, grantee, privilege), "privilege is already granted");
uint256 grantedPrivileges = _accessControls[msg.sender].contains(grantee)
? _accessControls[msg.sender].get(grantee)
: 0;
grantedPrivileges = grantedPrivileges.set(privilege);
_accessControls[msg.sender].set(grantee, grantedPrivileges);
emit GrantPrivilege(msg.sender, grantee, privilege);
}
/**
* @notice Revoke the privilege of the grantee. Can only called by the grantor.
*
* @param grantee The address of the grantee, the account to accept privilege.
* @param privilege The privilege to revoke.
*/
function revokePrivilege(address grantee, uint256 privilege) external override {
require(_isValid(privilege), "privilege is invalid");
require(isGranted(msg.sender, grantee, privilege), "privilege is not granted");
_accessControls[msg.sender].set(
grantee,
_accessControls[msg.sender].get(grantee).clean(privilege)
);
emit RevokePrivilege(msg.sender, grantee, privilege);
}
/**
* @notice Check if the grantee is granted the privilege by the grantor
* @param grantor The address of the main account, the account gives privilege.
* @param grantee The address of the grantee, the account to accept privilege.
* @param privilege The privilege, there are three kinds of valid privilege: deposit, withdraw, trade
* @return True if the grantee is granted the privilege by the grantor.
*/
function isGranted(
address grantor,
address grantee,
uint256 privilege
) public view override returns (bool) {
if (!_isValid(privilege)) {
return false;
}
if (!_accessControls[grantor].contains(grantee)) {
return false;
}
uint256 granted = _accessControls[grantor].get(grantee);
return granted > 0 && granted.test(privilege);
}
function _isValid(uint256 privilege) private pure returns (bool) {
return privilege > 0 && privilege <= Constant.PRIVILEGE_GUARD;
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./Proxy.sol";
import "../utils/Address.sol";
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*
* Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
* {TransparentUpgradeableProxy}.
*/
contract UpgradeableProxy is Proxy {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) public payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
Address.functionDelegateCall(_logic, _data);
}
}
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal view virtual override returns (address impl) {
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal virtual {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newImplementation)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
// solhint-disable-next-line no-inline-assembly
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize()) }
default { return(0, returndatasize()) }
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback () external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive () external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 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");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <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 GSN 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 payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
import "@openzeppelin/contracts-upgradeable/utils/EnumerableSetUpgradeable.sol";
/**
* @notice Perpetual state:
* - INVALID: Uninitialized or not non-existent perpetual;
* - INITIALIZING: Only when LiquidityPoolStorage.isRunning == false. Traders cannot perform operations;
* - NORMAL: Full functional state. Traders is able to perform all operations;
* - EMERGENCY: Perpetual is unsafe and only clear is available;
* - CLEARED: All margin account is cleared. Trade could withdraw remaining margin balance.
*/
enum PerpetualState {
INVALID,
INITIALIZING,
NORMAL,
EMERGENCY,
CLEARED
}
enum OrderType {
LIMIT,
MARKET,
STOP
}
/**
* @notice Data structure to store risk parameter value.
*/
struct Option {
int256 value;
int256 minValue;
int256 maxValue;
}
/**
* @notice Data structure to store oracle price data.
*/
struct OraclePriceData {
int256 price;
uint256 time;
}
/**
* @notice Data structure to store user margin information. See MarginAccountModule.sol for details.
*/
struct MarginAccount {
int256 cash;
int256 position;
int256 targetLeverage;
}
/**
* @notice Data structure of an order object.
*/
struct Order {
address trader;
address broker;
address relayer;
address referrer;
address liquidityPool;
int256 minTradeAmount;
int256 amount;
int256 limitPrice;
int256 triggerPrice;
uint256 chainID;
uint64 expiredAt;
uint32 perpetualIndex;
uint32 brokerFeeLimit;
uint32 flags;
uint32 salt;
}
/**
* @notice Core data structure, a core .
*/
struct LiquidityPoolStorage {
bool isRunning;
bool isFastCreationEnabled;
// addresses
address creator;
address operator;
address transferringOperator;
address governor;
address shareToken;
address accessController;
bool reserved3; // isWrapped
uint256 scaler;
uint256 collateralDecimals;
address collateralToken;
// pool attributes
int256 poolCash;
uint256 fundingTime;
uint256 reserved5;
uint256 operatorExpiration;
mapping(address => int256) reserved1;
bytes32[] reserved2;
// perpetuals
uint256 perpetualCount;
mapping(uint256 => PerpetualStorage) perpetuals;
// insurance fund
int256 insuranceFundCap;
int256 insuranceFund;
int256 donatedInsuranceFund;
address reserved4;
// reserved slot for future upgrade
bytes32[16] reserved;
}
/**
* @notice Core data structure, storing perpetual information.
*/
struct PerpetualStorage {
uint256 id;
PerpetualState state;
address oracle;
int256 totalCollateral;
int256 openInterest;
// prices
OraclePriceData indexPriceData;
OraclePriceData markPriceData;
OraclePriceData settlementPriceData;
// funding state
int256 fundingRate;
int256 unitAccumulativeFunding;
// base parameters
int256 initialMarginRate;
int256 maintenanceMarginRate;
int256 operatorFeeRate;
int256 lpFeeRate;
int256 referralRebateRate;
int256 liquidationPenaltyRate;
int256 keeperGasReward;
int256 insuranceFundRate;
int256 reserved1;
int256 maxOpenInterestRate;
// risk parameters
Option halfSpread;
Option openSlippageFactor;
Option closeSlippageFactor;
Option fundingRateLimit;
Option fundingRateFactor;
Option ammMaxLeverage;
Option maxClosePriceDiscount;
// users
uint256 totalAccount;
int256 totalMarginWithoutPosition;
int256 totalMarginWithPosition;
int256 redemptionRateWithoutPosition;
int256 redemptionRateWithPosition;
EnumerableSetUpgradeable.AddressSet activeAccounts;
// insurance fund
int256 reserved2;
int256 reserved3;
// accounts
mapping(address => MarginAccount) marginAccounts;
Option defaultTargetLeverage;
// keeper
address reserved4;
EnumerableSetUpgradeable.AddressSet ammKeepers;
EnumerableSetUpgradeable.AddressSet reserved5;
// reserved slot for future upgrade
bytes32[12] reserved;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
interface IUpgradeableProxy {
function implementation() external view returns (address);
function upgradeTo(address newImplementation) external;
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable;
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
import "./IProxyAdmin.sol";
interface IVersionControl {
function owner() external view returns (address);
function getLatestVersion() external view returns (bytes32 latestVersionKey);
/**
* @notice Get the details of the version.
*
* @param versionKey The key of the version to get.
* @return liquidityPoolTemplate The address of the liquidity pool template.
* @return governorTemplate The address of the governor template.
* @return compatibility The compatibility of the specified version.
*/
function getVersion(bytes32 versionKey)
external
view
returns (
address liquidityPoolTemplate,
address governorTemplate,
uint256 compatibility
);
/**
* @notice Get the description of the implementation of liquidity pool.
* Description contains creator, create time, compatibility and note
*
* @param liquidityPool The address of the liquidity pool.
* @param governor The address of the governor.
* @return appliedVersionKey The version key of given liquidity pool and governor.
*/
function getAppliedVersionKey(address liquidityPool, address governor)
external
view
returns (bytes32 appliedVersionKey);
/**
* @notice Check if a key is valid (exists).
*
* @param versionKey The key of the version to test.
* @return isValid Return true if the version of given key is valid.
*/
function isVersionKeyValid(bytes32 versionKey) external view returns (bool isValid);
/**
* @notice Check if the implementation of liquidity pool target is compatible with the implementation base.
* Being compatible means having larger compatibility.
*
* @param targetVersionKey The key of the version to be upgraded to.
* @param baseVersionKey The key of the version to be upgraded from.
* @return isCompatible True if the target version is compatible with the base version.
*/
function isVersionCompatible(bytes32 targetVersionKey, bytes32 baseVersionKey)
external
view
returns (bool isCompatible);
/**
* @dev Get a certain number of implementations of liquidity pool within range [begin, end).
*
* @param begin The index of first element to retrieve.
* @param end The end index of element, exclusive.
* @return versionKeys An array contains current version keys.
*/
function listAvailableVersions(uint256 begin, uint256 end)
external
view
returns (bytes32[] memory versionKeys);
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
import "./IProxyAdmin.sol";
interface IVariables {
function owner() external view returns (address);
/**
* @notice Get the address of the vault
* @return address The address of the vault
*/
function getVault() external view returns (address);
/**
* @notice Get the vault fee rate
* @return int256 The vault fee rate
*/
function getVaultFeeRate() external view returns (int256);
/**
* @notice Get the address of the access controller. It's always its own address.
*
* @return address The address of the access controller.
*/
function getAccessController() external view returns (address);
/**
* @notice Get the address of the symbol service.
*
* @return Address The address of the symbol service.
*/
function getSymbolService() external view returns (address);
/**
* @notice Set the vault address. Can only called by owner.
*
* @param newVault The new value of the vault fee rate
*/
function setVault(address newVault) external;
/**
* @notice Get the address of the mcb token.
* @dev [ConfirmBeforeDeployment]
*
* @return Address The address of the mcb token.
*/
function getMCBToken() external pure returns (address);
/**
* @notice Set the vault fee rate. Can only called by owner.
*
* @param newVaultFeeRate The new value of the vault fee rate
*/
function setVaultFeeRate(int256 newVaultFeeRate) external;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
// The MIT License (MIT)
// Copyright (c) 2020 zOS Global Limited
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
library EnumerableMapExt {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses internal functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct MapEntry {
address _key;
uint256 _value;
}
struct AddressToUintMap {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping(address => uint256) _indexes;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
AddressToUintMap storage map,
address key,
uint256 value
) internal returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) {
// Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(AddressToUintMap storage map, address key) internal returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) {
// Equivalent to contains(map, key)
// To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
// in the array, and then remove the last entry (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
// When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(AddressToUintMap storage map, address key) internal view returns (bool) {
return map._indexes[key] != 0;
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function length(AddressToUintMap storage map) internal view returns (uint256) {
return map._entries.length;
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressToUintMap storage map, uint256 index)
internal
view
returns (address, uint256)
{
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(AddressToUintMap storage map, address key) internal view returns (uint256) {
return get(map, key, "EnumerableMap: nonexistent key");
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*/
function get(
AddressToUintMap storage map,
address key,
string memory errorMessage
) internal view returns (uint256) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.4;
library BitwiseMath {
/**
* @dev Check if the value is 1 at the bit position
* @param value The value
* @param bit The bit, should be 2^n
* @return bool True if the value is 1 at the bit position
*/
function test(uint256 value, uint256 bit) internal pure returns (bool) {
return value & bit > 0;
}
/**
* @dev Set the value to 1 at the bit position
* @param value The value
* @param bit The bit, should be 2^n
* @return uint256 The modified value
*/
function set(uint256 value, uint256 bit) internal pure returns (uint256) {
return value | bit;
}
/**
* @dev Set value to 0 at the bit position
* @param value The value
* @param bit The bit, should be 2^n
* @return uint256 The modified value
*/
function clean(uint256 value, uint256 bit) internal pure returns (uint256) {
return value & (~bit);
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.4;
interface IAccessControl {
function grantPrivilege(address trader, uint256 privilege) external;
function revokePrivilege(address trader, uint256 privilege) external;
function isGranted(
address owner,
address trader,
uint256 privilege
) external view returns (bool);
}{
"optimizer": {
"enabled": true,
"runs": 1000
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"abi"
]
}
},
"libraries": {}
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