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Latest 25 from a total of 374 transactions
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Origin Swap | 18630737 | 278 days ago | IN | 0 ETH | 0.00849855 | ||||
Origin Swap | 18527037 | 292 days ago | IN | 0 ETH | 0.00648034 | ||||
Origin Swap | 18463331 | 301 days ago | IN | 0 ETH | 0.00802095 | ||||
Origin Swap | 18463319 | 301 days ago | IN | 0 ETH | 0.00829579 | ||||
Origin Swap | 18463305 | 301 days ago | IN | 0 ETH | 0.00907536 | ||||
Origin Swap | 18463292 | 301 days ago | IN | 0 ETH | 0.00781051 | ||||
Origin Swap | 18451605 | 303 days ago | IN | 0 ETH | 0.00294722 | ||||
Origin Swap | 18438686 | 305 days ago | IN | 0 ETH | 0.00549381 | ||||
Origin Swap | 18384804 | 312 days ago | IN | 0 ETH | 0.00422804 | ||||
Origin Swap | 18383082 | 312 days ago | IN | 0 ETH | 0.00188813 | ||||
Origin Swap | 18379175 | 313 days ago | IN | 0 ETH | 0.00397541 | ||||
Origin Swap | 18367810 | 314 days ago | IN | 0 ETH | 0.00163799 | ||||
Origin Swap | 18362823 | 315 days ago | IN | 0 ETH | 0.00191345 | ||||
Origin Swap | 18355362 | 316 days ago | IN | 0 ETH | 0.00139371 | ||||
Origin Swap | 18354285 | 316 days ago | IN | 0 ETH | 0.0017285 | ||||
Origin Swap | 18338428 | 319 days ago | IN | 0 ETH | 0.00162301 | ||||
Origin Swap | 18336640 | 319 days ago | IN | 0 ETH | 0.00368288 | ||||
Origin Swap | 18336366 | 319 days ago | IN | 0 ETH | 0.0018285 | ||||
Origin Swap | 18329049 | 320 days ago | IN | 0 ETH | 0.00289741 | ||||
Origin Swap | 18329033 | 320 days ago | IN | 0 ETH | 0.00315934 | ||||
Origin Swap | 18329028 | 320 days ago | IN | 0 ETH | 0.00322184 | ||||
Origin Swap | 18316343 | 322 days ago | IN | 0 ETH | 0.00160611 | ||||
Origin Swap | 18294091 | 325 days ago | IN | 0 ETH | 0.0020042 | ||||
Origin Swap | 18293995 | 325 days ago | IN | 0 ETH | 0.00209481 | ||||
Origin Swap | 18293992 | 325 days ago | IN | 0 ETH | 0.00164746 |
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Latest 25 internal transactions (View All)
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18527037 | 292 days ago | 0 ETH | |||||
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18463331 | 301 days ago | 0 ETH | |||||
18463331 | 301 days ago | 0 ETH | |||||
18463331 | 301 days ago | 0 ETH | |||||
18463331 | 301 days ago | 0 ETH | |||||
18463331 | 301 days ago | 0 ETH | |||||
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18463319 | 301 days ago | 0 ETH |
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Contract Name:
Router
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "./CurveFactoryV2.sol"; import "./Curve.sol"; import "../lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; import "../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; import "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol"; // Simplistic router that assumes USD is the only quote currency for contract Router { using SafeMath for uint256; using SafeERC20 for IERC20; address public factory; constructor(address _factory) { require(_factory != address(0), "Curve/factory-cannot-be-zeroth-address"); factory = _factory; } /// @notice view how much target amount a fixed origin amount will swap for /// @param _quoteCurrency the address of the quote currency (usually USDC) /// @param _origin the address of the origin /// @param _target the address of the target /// @param _originAmount the origin amount /// @return targetAmount_ the amount of target that will be returned function viewOriginSwap( address _quoteCurrency, address _origin, address _target, uint256 _originAmount ) external view returns (uint256 targetAmount_) { // If its an immediate pair then just swap directly on it address curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _target))); if (_origin == _quoteCurrency) { curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _origin))); } if (curve0 != address(0)) { targetAmount_ = Curve(curve0).viewOriginSwap(_origin, _target, _originAmount); return targetAmount_; } // Otherwise go through the quote currency curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _quoteCurrency))); address curve1 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _quoteCurrency))); if (curve0 != address(0) && curve1 != address(0)) { uint256 _quoteAmount = Curve(curve0).viewOriginSwap(_origin, _quoteCurrency, _originAmount); targetAmount_ = Curve(curve1).viewOriginSwap(_quoteCurrency, _target, _quoteAmount); return targetAmount_; } revert("Router/No-path"); } /// @notice swap a dynamic origin amount for a fixed target amount /// @param _quoteCurrency the address of the quote currency (usually USDC) /// @param _origin the address of the origin /// @param _target the address of the target /// @param _originAmount the origin amount /// @param _minTargetAmount the minimum target amount /// @param _deadline deadline in block number after which the trade will not execute /// @return targetAmount_ the amount of target that has been swapped for the origin amount function originSwap( address _quoteCurrency, address _origin, address _target, uint256 _originAmount, uint256 _minTargetAmount, uint256 _deadline ) public returns (uint256 targetAmount_) { IERC20(_origin).safeTransferFrom(msg.sender, address(this), _originAmount); // If its an immediate pair then just swap directly on it address curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _target))); if (_origin == _quoteCurrency) { curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _origin))); } if (curve0 != address(0)) { IERC20(_origin).safeApprove(curve0, _originAmount); targetAmount_ = Curve(curve0).originSwap(_origin, _target, _originAmount, _minTargetAmount, _deadline); IERC20(_target).safeTransfer(msg.sender, targetAmount_); return targetAmount_; } // Otherwise go through the quote currency curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _quoteCurrency))); address curve1 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _quoteCurrency))); if (curve0 != address(0) && curve1 != address(0)) { IERC20(_origin).safeApprove(curve0, _originAmount); uint256 _quoteAmount = Curve(curve0).originSwap(_origin, _quoteCurrency, _originAmount, 0, _deadline); IERC20(_quoteCurrency).safeApprove(curve1, _quoteAmount); targetAmount_ = Curve(curve1).originSwap( _quoteCurrency, _target, _quoteAmount, _minTargetAmount, _deadline ); IERC20(_target).safeTransfer(msg.sender, targetAmount_); return targetAmount_; } revert("Router/No-path"); } /// @notice view how much of the origin currency the target currency will take /// @param _quoteCurrency the address of the quote currency (usually USDC) /// @param _origin the address of the origin /// @param _target the address of the target /// @param _targetAmount the target amount /// @return originAmount_ the amount of target that has been swapped for the origin function viewTargetSwap( address _quoteCurrency, address _origin, address _target, uint256 _targetAmount ) public view returns (uint256 originAmount_) { // If its an immediate pair then just swap directly on it address curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _target))); if (_origin == _quoteCurrency) { curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _origin))); } if (curve0 != address(0)) { originAmount_ = Curve(curve0).viewTargetSwap(_origin, _target, _targetAmount); return originAmount_; } // Otherwise go through the quote currency curve0 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_target, _quoteCurrency))); address curve1 = CurveFactoryV2(factory).curves(keccak256(abi.encode(_origin, _quoteCurrency))); if (curve0 != address(0) && curve1 != address(0)) { uint256 _quoteAmount = Curve(curve0).viewTargetSwap(_quoteCurrency, _target, _targetAmount); originAmount_ = Curve(curve1).viewTargetSwap(_origin, _quoteCurrency, _quoteAmount); return originAmount_; } revert("Router/No-path"); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^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() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the default value returned by this function, unless * it's overridden. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer(address from, address to, uint256 amount) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _balances[to] += amount; } emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _balances[account] += amount; } emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= amount; } emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 amount) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 amount) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ 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) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { 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) { unchecked { // 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) { unchecked { 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) { unchecked { 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) { return a + b; } /** * @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) { 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) { return a * b; } /** * @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. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { 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) { 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) { unchecked { 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. * * 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) { unchecked { 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) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "./assimilators/AssimilatorV2.sol"; import "../lib/openzeppelin-contracts/contracts/access/Ownable.sol"; import "./interfaces/IAssimilatorFactory.sol"; import "./interfaces/IOracle.sol"; contract AssimilatorFactory is IAssimilatorFactory, Ownable { event NewAssimilator( address indexed caller, bytes32 indexed id, address indexed assimilator, address oracle, address token ); event AssimilatorRevoked( address indexed caller, bytes32 indexed id, address indexed assimilator ); event CurveFactoryUpdated( address indexed caller, address indexed curveFactory ); mapping(bytes32 => AssimilatorV2) public assimilators; address public curveFactory; modifier onlyCurveFactoryOrOwner { require(msg.sender == curveFactory || msg.sender == owner(), "unauthorized"); _; } function setCurveFactory(address _curveFactory) external onlyOwner { require( _curveFactory != address(0), "AssimFactory/curve factory zero address!" ); curveFactory = _curveFactory; emit CurveFactoryUpdated(msg.sender, curveFactory); } function getAssimilator(address _token) external view override returns (AssimilatorV2) { bytes32 assimilatorID = keccak256(abi.encode(_token)); return assimilators[assimilatorID]; } function newAssimilator( IOracle _oracle, address _token, uint256 _tokenDecimals ) external override onlyCurveFactoryOrOwner returns (AssimilatorV2) { bytes32 assimilatorID = keccak256(abi.encode(_token)); if (address(assimilators[assimilatorID]) != address(0)) revert("AssimilatorFactory/oracle-stablecoin-pair-already-exists"); AssimilatorV2 assimilator = new AssimilatorV2( _oracle, _token, _tokenDecimals, IOracle(_oracle).decimals() ); assimilators[assimilatorID] = assimilator; emit NewAssimilator( msg.sender, assimilatorID, address(assimilator), address(_oracle), _token ); return assimilator; } function revokeAssimilator(address _token) external onlyOwner { bytes32 assimilatorID = keccak256(abi.encode(_token)); address _assimAddress = address(assimilators[assimilatorID]); assimilators[assimilatorID] = AssimilatorV2(address(0)); emit AssimilatorRevoked( msg.sender, assimilatorID, address(_assimAddress) ); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "../lib/openzeppelin-contracts/contracts/utils/Address.sol"; import "./interfaces/IAssimilator.sol"; import "./lib/ABDKMath64x64.sol"; import "./Structs.sol"; library Assimilators { using ABDKMath64x64 for int128; using Address for address; IAssimilator public constant iAsmltr = IAssimilator(address(0)); function delegate(address _callee, bytes memory _data) internal returns (bytes memory) { require(_callee.isContract(), "Assimilators/callee-is-not-a-contract"); // solhint-disable-next-line (bool _success, bytes memory returnData_) = _callee.delegatecall(_data); // solhint-disable-next-line assembly { if eq(_success, 0) { revert(add(returnData_, 0x20), returndatasize()) } } return returnData_; } function getRate(address _assim) internal view returns (uint256 amount_) { amount_ = IAssimilator(_assim).getRate(); } function viewRawAmount(address _assim, int128 _amt) internal view returns (uint256 amount_) { amount_ = IAssimilator(_assim).viewRawAmount(_amt); } function viewRawAmountLPRatio( address _assim, uint256 _baseWeight, uint256 _quoteWeight, int128 _amount ) internal view returns (uint256 amount_) { amount_ = IAssimilator(_assim).viewRawAmountLPRatio(_baseWeight, _quoteWeight, address(this), _amount); } function viewNumeraireAmount(address _assim, uint256 _amt) internal view returns (int128 amt_) { amt_ = IAssimilator(_assim).viewNumeraireAmount(_amt); } function viewNumeraireAmountAndBalance(address _assim, uint256 _amt) internal view returns (int128 amt_, int128 bal_) { (amt_, bal_) = IAssimilator(_assim).viewNumeraireAmountAndBalance(address(this), _amt); } function viewNumeraireBalance(address _assim) internal view returns (int128 bal_) { bal_ = IAssimilator(_assim).viewNumeraireBalance(address(this)); } function viewNumeraireBalanceLPRatio( uint256 _baseWeight, uint256 _quoteWeight, address _assim ) internal view returns (int128 bal_) { bal_ = IAssimilator(_assim).viewNumeraireBalanceLPRatio(_baseWeight, _quoteWeight, address(this)); } function intakeRaw(address _assim, uint256 _amt) internal returns (int128 amt_) { bytes memory data = abi.encodeWithSelector(iAsmltr.intakeRaw.selector, _amt); amt_ = abi.decode(delegate(_assim, data), (int128)); } function intakeRawAndGetBalance(address _assim, uint256 _amt) internal returns (int128 amt_, int128 bal_) { bytes memory data = abi.encodeWithSelector(iAsmltr.intakeRawAndGetBalance.selector, _amt); (amt_, bal_) = abi.decode(delegate(_assim, data), (int128, int128)); } function intakeNumeraire(address _assim, int128 _amt) internal returns (uint256 amt_) { bytes memory data = abi.encodeWithSelector(iAsmltr.intakeNumeraire.selector, _amt); amt_ = abi.decode(delegate(_assim, data), (uint256)); } function intakeNumeraireLPRatio( address _assim, IntakeNumLpRatioInfo memory info ) internal returns (uint256 amt_) { bytes memory data = abi.encodeWithSelector( iAsmltr.intakeNumeraireLPRatio.selector, info.baseWeight, info.minBase, info.maxBase, info.quoteWeight, info.minQuote, info.maxQuote, address(this), // _amount info.amount ); amt_ = abi.decode(delegate(_assim, data), (uint256)); } function outputRaw( address _assim, address _dst, uint256 _amt ) internal returns (int128 amt_) { bytes memory data = abi.encodeWithSelector(iAsmltr.outputRaw.selector, _dst, _amt); amt_ = abi.decode(delegate(_assim, data), (int128)); amt_ = amt_.neg(); } function outputRawAndGetBalance( address _assim, address _dst, uint256 _amt ) internal returns (int128 amt_, int128 bal_) { bytes memory data = abi.encodeWithSelector(iAsmltr.outputRawAndGetBalance.selector, _dst, _amt); (amt_, bal_) = abi.decode(delegate(_assim, data), (int128, int128)); amt_ = amt_.neg(); } function outputNumeraire( address _assim, address _dst, int128 _amt ) internal returns (uint256 amt_) { bytes memory data = abi.encodeWithSelector(iAsmltr.outputNumeraire.selector, _dst, _amt.abs()); amt_ = abi.decode(delegate(_assim, data), (uint256)); } function transferFee( address _assim, int128 _amt, address _treasury ) internal { bytes memory data = abi.encodeWithSelector(iAsmltr.transferFee.selector, _amt, _treasury); delegate(_assim, data); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; pragma experimental ABIEncoderV2; import "./interfaces/IFlashCallback.sol"; import "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol"; import "./lib/ABDKMath64x64.sol"; import "./lib/FullMath.sol"; import "./lib/NoDelegateCall.sol"; import "./Orchestrator.sol"; import "./ProportionalLiquidity.sol"; import "./Swaps.sol"; import "./ViewLiquidity.sol"; import "./Storage.sol"; import "./interfaces/IFreeFromUpTo.sol"; import "./interfaces/ICurveFactory.sol"; import "./Structs.sol"; library Curves { using ABDKMath64x64 for int128; event Approval( address indexed _owner, address indexed spender, uint256 value ); event Transfer(address indexed from, address indexed to, uint256 value); function add( uint256 x, uint256 y, string memory errorMessage ) private pure returns (uint256 z) { require((z = x + y) >= x, errorMessage); } function sub( uint256 x, uint256 y, string memory errorMessage ) private pure returns (uint256 z) { require((z = x - y) <= x, errorMessage); } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer( Storage.Curve storage curve, address recipient, uint256 amount ) external returns (bool) { _transfer(curve, msg.sender, recipient, amount); return true; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve( Storage.Curve storage curve, address spender, uint256 amount ) external returns (bool) { _approve(curve, msg.sender, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for `sender`'s tokens of at least * `amount` */ function transferFrom( Storage.Curve storage curve, address sender, address recipient, uint256 amount ) external returns (bool) { _transfer(curve, sender, recipient, amount); _approve( curve, sender, msg.sender, sub( curve.allowances[sender][msg.sender], amount, "Curve/insufficient-allowance" ) ); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance( Storage.Curve storage curve, address spender, uint256 addedValue ) external returns (bool) { _approve( curve, msg.sender, spender, add( curve.allowances[msg.sender][spender], addedValue, "Curve/approval-overflow" ) ); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance( Storage.Curve storage curve, address spender, uint256 subtractedValue ) external returns (bool) { _approve( curve, msg.sender, spender, sub( curve.allowances[msg.sender][spender], subtractedValue, "Curve/allowance-decrease-underflow" ) ); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is public function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( Storage.Curve storage curve, address sender, address recipient, uint256 amount ) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); curve.balances[sender] = sub( curve.balances[sender], amount, "Curve/insufficient-balance" ); curve.balances[recipient] = add( curve.balances[recipient], amount, "Curve/transfer-overflow" ); emit Transfer(sender, recipient, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `_owner`s tokens. * * This is public function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `_owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( Storage.Curve storage curve, address _owner, address spender, uint256 amount ) private { require(_owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); curve.allowances[_owner][spender] = amount; emit Approval(_owner, spender, amount); } } contract Curve is Storage, NoDelegateCall { using SafeMath for uint256; using ABDKMath64x64 for int128; using SafeERC20 for IERC20; address private curveFactory; event Approval( address indexed _owner, address indexed spender, uint256 value ); event ParametersSet( uint256 alpha, uint256 beta, uint256 delta, uint256 epsilon, uint256 lambda ); event AssetIncluded( address indexed numeraire, address indexed reserve, uint256 weight ); event AssimilatorIncluded( address indexed derivative, address indexed numeraire, address indexed reserve, address assimilator ); event PartitionRedeemed( address indexed token, address indexed redeemer, uint256 value ); event OwnershipTransfered( address indexed previousOwner, address indexed newOwner ); event FrozenSet(bool isFrozen); event EmergencyAlarm(bool isEmergency); event Trade( address indexed trader, address indexed origin, address indexed target, uint256 originAmount, uint256 targetAmount, int128 rawProtocolFee ); event Transfer(address indexed from, address indexed to, uint256 value); event Flash( address indexed from, address indexed to, uint256 value0, uint256 value1, uint256 paid0, uint256 paid1 ); modifier onlyOwner() { require(msg.sender == owner, "Curve/caller-is-not-owner"); _; } modifier nonReentrant() { require(notEntered, "Curve/re-entered"); notEntered = false; _; notEntered = true; } modifier transactable() { require(!frozen, "Curve/frozen-only-allowing-proportional-withdraw"); _; } modifier isEmergency() { require( emergency, "Curve/emergency-only-allowing-emergency-proportional-withdraw" ); _; } modifier isNotEmergency() { require( !emergency, "Curve/emergency-only-allowing-emergency-proportional-withdraw" ); _; } modifier deadline(uint256 _deadline) { require(block.timestamp < _deadline, "Curve/tx-deadline-passed"); _; } modifier globallyTransactable() { require( !ICurveFactory(address(curveFactory)).getGlobalFrozenState(), "Curve/frozen-globally-only-allowing-proportional-withdraw" ); _; } modifier isFlashable() { require( ICurveFactory(address(curveFactory)).getFlashableState(), "Curve/flashloans-paused" ); _; } modifier isDepositable(address pool, uint256 deposits) { { uint256 poolCap = ICurveFactory(curveFactory).getPoolCap(pool); uint256 supply = totalSupply(); require( poolCap == 0 || supply.add(deposits) <= poolCap, "curve/exceeds pool cap" ); } if (!ICurveFactory(curveFactory).isPoolGuarded(pool)) { _; } else { _; uint256 poolGuardAmt = ICurveFactory(curveFactory).getPoolGuardAmount(pool); require(curve.balances[msg.sender] <= poolGuardAmt, "curve/deposit-exceeds-guard-amt"); } } constructor( string memory _name, string memory _symbol, address[] memory _assets, uint256[] memory _assetWeights, address _factory ) { require(_factory != address(0), "Curve/curve factory zero address!"); owner = msg.sender; name = _name; symbol = _symbol; curveFactory = _factory; emit OwnershipTransfered(address(0), msg.sender); Orchestrator.initialize( curve, numeraires, reserves, derivatives, _assets, _assetWeights ); } /// @notice sets the parameters for the pool /// @param _alpha the value for alpha (halt threshold) must be less than or equal to 1 and greater than 0 /// @param _beta the value for beta must be less than alpha and greater than 0 /// @param _feeAtHalt the maximum value for the fee at the halt point /// @param _epsilon the base fee for the pool /// @param _lambda the value for lambda must be less than or equal to 1 and greater than zero function setParams( uint256 _alpha, uint256 _beta, uint256 _feeAtHalt, uint256 _epsilon, uint256 _lambda ) external onlyOwner { Orchestrator.setParams( curve, _alpha, _beta, _feeAtHalt, _epsilon, _lambda ); } function setAssimilator( address _baseCurrency, address _baseAssim, address _quoteCurrency, address _quoteAssim ) external onlyOwner { Orchestrator.setAssimilator( curve, _baseCurrency, _baseAssim, _quoteCurrency, _quoteAssim ); } /// @notice excludes an assimilator from the curve /// @param _derivative the address of the assimilator to exclude function excludeDerivative(address _derivative) external onlyOwner { for (uint256 i = 0; i < numeraires.length; i++) { if (_derivative == numeraires[i]) revert("Curve/cannot-delete-numeraire"); if (_derivative == reserves[i]) revert("Curve/cannot-delete-reserve"); } delete curve.assimilators[_derivative]; } /// @notice view the current parameters of the curve /// @return alpha_ the current alpha value /// beta_ the current beta value /// delta_ the current delta value /// epsilon_ the current epsilon value /// lambda_ the current lambda value /// omega_ the current omega value function viewCurve() external view returns ( uint256 alpha_, uint256 beta_, uint256 delta_, uint256 epsilon_, uint256 lambda_ ) { return Orchestrator.viewCurve(curve); } function setEmergency(bool _emergency) external onlyOwner { emit EmergencyAlarm(_emergency); emergency = _emergency; } function setFrozen(bool _toFreezeOrNotToFreeze) external onlyOwner { emit FrozenSet(_toFreezeOrNotToFreeze); frozen = _toFreezeOrNotToFreeze; } function transferOwnership(address _newOwner) external onlyOwner { require( _newOwner != address(0), "Curve/new-owner-cannot-be-zeroth-address" ); emit OwnershipTransfered(owner, _newOwner); owner = _newOwner; } /// @notice swap a dynamic origin amount for a fixed target amount /// @param _origin the address of the origin /// @param _target the address of the target /// @param _originAmount the origin amount /// @param _minTargetAmount the minimum target amount /// @param _deadline deadline in block number after which the trade will not execute /// @return targetAmount_ the amount of target that has been swapped for the origin amount function originSwap( address _origin, address _target, uint256 _originAmount, uint256 _minTargetAmount, uint256 _deadline ) external deadline(_deadline) globallyTransactable transactable noDelegateCall isNotEmergency nonReentrant returns (uint256 targetAmount_) { OriginSwapData memory _swapData; _swapData._origin = _origin; _swapData._target = _target; _swapData._originAmount = _originAmount; _swapData._recipient = msg.sender; _swapData._curveFactory = curveFactory; targetAmount_ = Swaps.originSwap(curve, _swapData); // targetAmount_ = Swaps.originSwap(curve, _origin, _target, _originAmount, msg.sender,curveFactory); require( targetAmount_ >= _minTargetAmount, "Curve/below-min-target-amount" ); } /// @notice view how much target amount a fixed origin amount will swap for /// @param _origin the address of the origin /// @param _target the address of the target /// @param _originAmount the origin amount /// @return targetAmount_ the target amount that would have been swapped for the origin amount function viewOriginSwap( address _origin, address _target, uint256 _originAmount ) external view globallyTransactable transactable returns (uint256 targetAmount_) { targetAmount_ = Swaps.viewOriginSwap( curve, _origin, _target, _originAmount ); } /// @notice swap a dynamic origin amount for a fixed target amount /// @param _origin the address of the origin /// @param _target the address of the target /// @param _maxOriginAmount the maximum origin amount /// @param _targetAmount the target amount /// @param _deadline deadline in block number after which the trade will not execute /// @return originAmount_ the amount of origin that has been swapped for the target function targetSwap( address _origin, address _target, uint256 _maxOriginAmount, uint256 _targetAmount, uint256 _deadline ) external deadline(_deadline) globallyTransactable transactable noDelegateCall isNotEmergency nonReentrant returns (uint256 originAmount_) { TargetSwapData memory _swapData; _swapData._origin = _origin; _swapData._target = _target; _swapData._targetAmount = _targetAmount; _swapData._recipient = msg.sender; _swapData._curveFactory = curveFactory; originAmount_ = Swaps.targetSwap(curve, _swapData); // originAmount_ = Swaps.targetSwap(curve, _origin, _target, _targetAmount, msg.sender,curveFactory); require( originAmount_ <= _maxOriginAmount, "Curve/above-max-origin-amount" ); } /// @notice view how much of the origin currency the target currency will take /// @param _origin the address of the origin /// @param _target the address of the target /// @param _targetAmount the target amount /// @return originAmount_ the amount of target that has been swapped for the origin function viewTargetSwap( address _origin, address _target, uint256 _targetAmount ) external view globallyTransactable transactable returns (uint256 originAmount_) { originAmount_ = Swaps.viewTargetSwap( curve, _origin, _target, _targetAmount ); } /// @notice deposit into the pool with no slippage from the numeraire assets the pool supports /// @param _deposit the full amount you want to deposit into the pool which will be divided up evenly amongst /// the numeraire assets of the pool /// @return ( the amount of curves you receive in return for your deposit, /// the amount deposited for each numeraire) function deposit(uint256 _deposit,uint256 _minQuoteAmount,uint256 _minBaseAmount,uint256 _maxQuoteAmount, uint256 _maxBaseAmount, uint256 _deadline) external deadline(_deadline) globallyTransactable transactable nonReentrant noDelegateCall isNotEmergency isDepositable(address(this), _deposit) returns (uint256, uint256[] memory) { require(_deposit >0, "Curve/deposit_below_zero"); // (curvesMinted_, deposits_) DepositData memory _depositData; _depositData.deposits = _deposit; _depositData.minQuote = _minQuoteAmount; _depositData.minBase = _minBaseAmount; _depositData.maxQuote = _maxQuoteAmount; _depositData.maxBase = _maxBaseAmount; ( uint256 curvesMinted_, uint256[] memory deposits_ ) = ProportionalLiquidity.proportionalDeposit(curve, _depositData); return (curvesMinted_, deposits_); } /// @notice view deposits and curves minted a given deposit would return /// @param _deposit the full amount of stablecoins you want to deposit. Divided evenly according to the /// prevailing proportions of the numeraire assets of the pool /// @return (the amount of curves you receive in return for your deposit, /// the amount deposited for each numeraire) function viewDeposit(uint256 _deposit) external view globallyTransactable transactable returns (uint256, uint256[] memory) { // curvesToMint_, depositsToMake_ return ProportionalLiquidity.viewProportionalDeposit(curve, _deposit); } /// @notice Emergency withdraw tokens in the event that the oracle somehow bugs out /// and no one is able to withdraw due to the invariant check /// @param _curvesToBurn the full amount you want to withdraw from the pool which will be withdrawn from evenly amongst the /// numeraire assets of the pool /// @return withdrawals_ the amonts of numeraire assets withdrawn from the pool function emergencyWithdraw(uint256 _curvesToBurn, uint256 _deadline) external isEmergency deadline(_deadline) nonReentrant noDelegateCall returns (uint256[] memory withdrawals_) { return ProportionalLiquidity.proportionalWithdraw(curve, _curvesToBurn); } /// @notice withdrawas amount of curve tokens from the the pool equally from the numeraire assets of the pool with no slippage /// @param _curvesToBurn the full amount you want to withdraw from the pool which will be withdrawn from evenly amongst the /// numeraire assets of the pool /// @return withdrawals_ the amonts of numeraire assets withdrawn from the pool function withdraw(uint256 _curvesToBurn, uint256 _deadline) external deadline(_deadline) nonReentrant noDelegateCall isNotEmergency returns (uint256[] memory withdrawals_) { return ProportionalLiquidity.proportionalWithdraw(curve, _curvesToBurn); } /// @notice views the withdrawal information from the pool /// @param _curvesToBurn the full amount you want to withdraw from the pool which will be withdrawn from evenly amongst the /// numeraire assets of the pool /// @return the amonnts of numeraire assets withdrawn from the pool function viewWithdraw(uint256 _curvesToBurn) external view globallyTransactable transactable returns (uint256[] memory) { return ProportionalLiquidity.viewProportionalWithdraw( curve, _curvesToBurn ); } function supportsInterface(bytes4 _interface) public pure returns (bool supports_) { supports_ = this.supportsInterface.selector == _interface || // erc165 bytes4(0x7f5828d0) == _interface || // eip173 bytes4(0x36372b07) == _interface; // erc20 } /// @notice transfers curve tokens /// @param _recipient the address of where to send the curve tokens /// @param _amount the amount of curve tokens to send /// @return success_ the success bool of the call function transfer(address _recipient, uint256 _amount) public nonReentrant noDelegateCall isNotEmergency returns (bool success_) { success_ = Curves.transfer(curve, _recipient, _amount); } /// @notice transfers curve tokens from one address to another address /// @param _sender the account from which the curve tokens will be sent /// @param _recipient the account to which the curve tokens will be sent /// @param _amount the amount of curve tokens to transfer /// @return success_ the success bool of the call function transferFrom( address _sender, address _recipient, uint256 _amount ) public nonReentrant noDelegateCall isNotEmergency returns (bool success_) { success_ = Curves.transferFrom(curve, _sender, _recipient, _amount); } /// @notice approves a user to spend curve tokens on their behalf /// @param _spender the account to allow to spend from msg.sender /// @param _amount the amount to specify the spender can spend /// @return success_ the success bool of this call function approve(address _spender, uint256 _amount) public nonReentrant noDelegateCall returns (bool success_) { success_ = Curves.approve(curve, _spender, _amount); } function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external isFlashable globallyTransactable nonReentrant noDelegateCall transactable isNotEmergency { uint256 fee = curve.epsilon.mulu(1e18); require( IERC20(derivatives[0]).balanceOf(address(this)) > 0, "Curve/token0-zero-liquidity-depth" ); require( IERC20(derivatives[1]).balanceOf(address(this)) > 0, "Curve/token1-zero-liquidity-depth" ); uint256 fee0 = FullMath.mulDivRoundingUp(amount0, fee, 1e18); uint256 fee1 = FullMath.mulDivRoundingUp(amount1, fee, 1e18); uint256 balance0Before = IERC20(derivatives[0]).balanceOf( address(this) ); uint256 balance1Before = IERC20(derivatives[1]).balanceOf( address(this) ); if (amount0 > 0) IERC20(derivatives[0]).safeTransfer(recipient, amount0); if (amount1 > 0) IERC20(derivatives[1]).safeTransfer(recipient, amount1); IFlashCallback(msg.sender).flashCallback(fee0, fee1, data); uint256 balance0After = IERC20(derivatives[0]).balanceOf(address(this)); uint256 balance1After = IERC20(derivatives[1]).balanceOf(address(this)); require( balance0Before.add(fee0) <= balance0After, "Curve/insufficient-token0-returned" ); require( balance1Before.add(fee1) <= balance1After, "Curve/insufficient-token1-returned" ); // sub is safe because we know balanceAfter is gt balanceBefore by at least fee uint256 paid0 = balance0After - balance0Before; uint256 paid1 = balance1After - balance1Before; IERC20(derivatives[0]).safeTransfer(owner, paid0); IERC20(derivatives[1]).safeTransfer(owner, paid1); emit Flash(msg.sender, recipient, amount0, amount1, paid0, paid1); } /// @notice view the curve token balance of a given account /// @param _account the account to view the balance of /// @return balance_ the curve token ballance of the given account function balanceOf(address _account) public view returns (uint256 balance_) { balance_ = curve.balances[_account]; } /// @notice views the total curve supply of the pool /// @return totalSupply_ the total supply of curve tokens function totalSupply() public view returns (uint256 totalSupply_) { totalSupply_ = curve.totalSupply; } /// @notice views the total allowance one address has to spend from another address /// @param _owner the address of the owner /// @param _spender the address of the spender /// @return allowance_ the amount the owner has allotted the spender function allowance(address _owner, address _spender) public view returns (uint256 allowance_) { allowance_ = curve.allowances[_owner][_spender]; } /// @notice views the total amount of liquidity in the curve in numeraire value and format - 18 decimals /// @return total_ the total value in the curve /// @return individual_ the individual values in the curve function liquidity() public view returns (uint256 total_, uint256[] memory individual_) { return ViewLiquidity.viewLiquidity(curve); } /// @notice view the assimilator address for a derivative /// @return assimilator_ the assimilator address function assimilator(address _derivative) public view returns (address assimilator_) { assimilator_ = curve.assimilators[_derivative].addr; } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is disstributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; // Finds new Curves! logs their addresses and provides `isCurve(address) -> (bool)` import "./Curve.sol"; import "./interfaces/IFreeFromUpTo.sol"; import "../lib/openzeppelin-contracts/contracts/access/Ownable.sol"; import "../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol"; contract CurveFactory is Ownable, ReentrancyGuard { event NewCurve(address indexed caller, bytes32 indexed id, address indexed curve); mapping(bytes32 => address) public curves; function getCurve(address _baseCurrency, address _quoteCurrency) external view returns (address) { bytes32 curveId = keccak256(abi.encode(_baseCurrency, _quoteCurrency)); return (curves[curveId]); } function newCurve( string memory _name, string memory _symbol, address _baseCurrency, address _quoteCurrency, uint256 _baseWeight, uint256 _quoteWeight, address _baseAssimilator, address _quoteAssimilator ) public nonReentrant onlyOwner returns (Curve) { bytes32 curveId = keccak256(abi.encode(_baseCurrency, _quoteCurrency)); if (curves[curveId] != address(0)) revert("CurveFactory/currency-pair-already-exists"); address[] memory _assets = new address[](10); uint256[] memory _assetWeights = new uint256[](2); // Base Currency _assets[0] = _baseCurrency; _assets[1] = _baseAssimilator; _assets[2] = _baseCurrency; _assets[3] = _baseAssimilator; _assets[4] = _baseCurrency; // Quote Currency (typically USDC) _assets[5] = _quoteCurrency; _assets[6] = _quoteAssimilator; _assets[7] = _quoteCurrency; _assets[8] = _quoteAssimilator; _assets[9] = _quoteCurrency; // Weights _assetWeights[0] = _baseWeight; _assetWeights[1] = _quoteWeight; // New curve Curve curve = new Curve(_name, _symbol, _assets, _assetWeights, address(this)); curve.transferOwnership(msg.sender); curves[curveId] = address(curve); emit NewCurve(msg.sender, curveId, address(curve)); return curve; } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is disstributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; pragma experimental ABIEncoderV2; // Finds new Curves! logs their addresses and provides `isCurve(address) -> (bool)` import "../lib/openzeppelin-contracts/contracts/utils/Address.sol"; import "../lib/openzeppelin-contracts/contracts/access/Ownable.sol"; import "./Curve.sol"; import "./interfaces/IFreeFromUpTo.sol"; import "./AssimilatorFactory.sol"; import "./assimilators/AssimilatorV2.sol"; import "./interfaces/ICurveFactory.sol"; import "./interfaces/IAssimilatorFactory.sol"; import "./interfaces/IERC20Detailed.sol"; import "./interfaces/IConfig.sol"; import "./Structs.sol"; contract CurveFactoryV2 is ICurveFactory, Ownable { using Address for address; IAssimilatorFactory public immutable assimilatorFactory; IConfig public config; address private USDC; event NewCurve( address indexed caller, bytes32 indexed id, address indexed curve ); mapping(bytes32 => address) public curves; constructor(address _assimFactory, address _config) { require( _assimFactory.isContract(), "CurveFactory/invalid-assimFactory" ); assimilatorFactory = IAssimilatorFactory(_assimFactory); require(_config.isContract(), "CurveFactory/invalid-config"); config = IConfig(_config); } function getGlobalFrozenState() external view virtual override returns (bool) { return config.getGlobalFrozenState(); } function getFlashableState() external view virtual override returns (bool) { return config.getFlashableState(); } function getProtocolFee() external view virtual override returns (int128) { return config.getProtocolFee(); } function getProtocolTreasury() public view virtual override returns (address) { return config.getProtocolTreasury(); } function isPoolGuarded(address pool) external view override returns (bool) { return config.isPoolGuarded(pool); } function getPoolGuardAmount(address pool) external view override returns (uint256) { return config.getPoolGuardAmount(pool); } function getPoolCap(address pool) external view override returns (uint256) { return config.getPoolCap(pool); } function getCurve(address _baseCurrency, address _quoteCurrency) external view returns (address) { bytes32 curveId = keccak256(abi.encode(_baseCurrency, _quoteCurrency)); return (curves[curveId]); } function newCurve(CurveInfo memory _info) public returns (Curve) { require( _info._quoteCurrency == quoteAddress(), "CurveFactory/quote-currency-is-not-usdc" ); require( _info._baseCurrency != quoteAddress(), "CurveFactory/base-currency-is-usdc" ); require( _info._baseWeight == 5e17 && _info._quoteWeight == 5e17, "CurveFactory/weights-not-50-percent" ); uint256 quoteDec = IERC20Detailed(_info._quoteCurrency).decimals(); uint256 baseDec = IERC20Detailed(_info._baseCurrency).decimals(); bytes32 curveId = keccak256( abi.encode(_info._baseCurrency, _info._quoteCurrency) ); if (curves[curveId] != address(0)) revert("CurveFactory/pair-exists"); AssimilatorV2 _baseAssim; _baseAssim = (assimilatorFactory.getAssimilator(_info._baseCurrency)); if (address(_baseAssim) == address(0)) _baseAssim = ( assimilatorFactory.newAssimilator( _info._baseOracle, _info._baseCurrency, baseDec ) ); AssimilatorV2 _quoteAssim; _quoteAssim = (assimilatorFactory.getAssimilator(_info._quoteCurrency)); if (address(_quoteAssim) == address(0)) _quoteAssim = ( assimilatorFactory.newAssimilator( _info._quoteOracle, _info._quoteCurrency, quoteDec ) ); address[] memory _assets = new address[](10); uint256[] memory _assetWeights = new uint256[](2); // Base Currency _assets[0] = _info._baseCurrency; _assets[1] = address(_baseAssim); _assets[2] = _info._baseCurrency; _assets[3] = address(_baseAssim); _assets[4] = _info._baseCurrency; // Quote Currency (typically USDC) _assets[5] = _info._quoteCurrency; _assets[6] = address(_quoteAssim); _assets[7] = _info._quoteCurrency; _assets[8] = address(_quoteAssim); _assets[9] = _info._quoteCurrency; // Weights _assetWeights[0] = _info._baseWeight; _assetWeights[1] = _info._quoteWeight; // New curve Curve curve = new Curve( _info._name, _info._symbol, _assets, _assetWeights, address(this) ); curve.setParams( _info._alpha, _info._beta, _info._feeAtHalt, _info._epsilon, _info._lambda ); curve.transferOwnership(getProtocolTreasury()); curves[curveId] = address(curve); emit NewCurve(msg.sender, curveId, address(curve)); return curve; } function quoteAddress() internal view returns (address) { if (USDC == address(0)) { uint256 chainID; assembly { chainID := chainid() } if (chainID == 1) { return 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48; } else if (chainID == 137) { return 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174; } else { return address(0); } } else { return USDC; } } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "./Storage.sol"; import "./lib/UnsafeMath64x64.sol"; import "./lib/ABDKMath64x64.sol"; library CurveMath { int128 private constant ONE = 0x10000000000000000; int128 private constant MAX = 0x4000000000000000; // .25 in layman's terms int128 private constant MAX_DIFF = -0x10C6F7A0B5EE; int128 private constant ONE_WEI = 0x12; using ABDKMath64x64 for int128; using UnsafeMath64x64 for int128; using ABDKMath64x64 for uint256; // This is used to prevent stack too deep errors function calculateFee( int128 _gLiq, int128[] memory _bals, Storage.Curve storage curve, int128[] memory _weights ) internal view returns (int128 psi_) { int128 _beta = curve.beta; int128 _delta = curve.delta; psi_ = calculateFee(_gLiq, _bals, _beta, _delta, _weights); } function calculateFee( int128 _gLiq, int128[] memory _bals, int128 _beta, int128 _delta, int128[] memory _weights ) internal pure returns (int128 psi_) { uint256 _length = _bals.length; for (uint256 i = 0; i < _length; i++) { int128 _ideal = _gLiq.mul(_weights[i]); psi_ += calculateMicroFee(_bals[i], _ideal, _beta, _delta); } } function calculateMicroFee( int128 _bal, int128 _ideal, int128 _beta, int128 _delta ) private pure returns (int128 fee_) { if (_bal < _ideal) { int128 _threshold = _ideal.mul(ONE - _beta); if (_bal < _threshold) { int128 _feeMargin = _threshold - _bal; fee_ = _feeMargin.mul(_delta); fee_ = fee_.div(_ideal); if (fee_ > MAX) fee_ = MAX; fee_ = fee_.mul(_feeMargin); } else fee_ = 0; } else { int128 _threshold = _ideal.mul(ONE + _beta); if (_bal > _threshold) { int128 _feeMargin = _bal - _threshold; fee_ = _feeMargin.mul(_delta); fee_ = fee_.div(_ideal); if (fee_ > MAX) fee_ = MAX; fee_ = fee_.mul(_feeMargin); } else fee_ = 0; } } function calculateTrade( Storage.Curve storage curve, int128 _oGLiq, int128 _nGLiq, int128[] memory _oBals, int128[] memory _nBals, int128 _inputAmt, uint256 _outputIndex ) internal view returns (int128 outputAmt_) { outputAmt_ = -_inputAmt; int128 _lambda = curve.lambda; int128[] memory _weights = curve.weights; int128 _omega = calculateFee(_oGLiq, _oBals, curve, _weights); int128 _psi; for (uint256 i = 0; i < 32; i++) { _psi = calculateFee(_nGLiq, _nBals, curve, _weights); int128 prevAmount; { prevAmount = outputAmt_; outputAmt_ = _omega < _psi ? -(_inputAmt + _omega - _psi) : -(_inputAmt + _lambda.mul(_omega - _psi)); // outputAmt_ = _omega < _psi ? -(_inputAmt + _omega - _psi) : -(_inputAmt +_omega - _psi); } if (outputAmt_ / 1e13 == prevAmount / 1e13) { _nGLiq = _oGLiq + _inputAmt + outputAmt_; _nBals[_outputIndex] = _oBals[_outputIndex] + outputAmt_; enforceHalts(curve, _oGLiq, _nGLiq, _oBals, _nBals, _weights); enforceSwapInvariant(_oGLiq, _omega, _nGLiq, _psi); return outputAmt_; } else { _nGLiq = _oGLiq + _inputAmt + outputAmt_; _nBals[_outputIndex] = _oBals[_outputIndex].add(outputAmt_); } } revert("Curve/swap-convergence-failed"); } function calculateLiquidityMembrane( Storage.Curve storage curve, int128 _oGLiq, int128 _nGLiq, int128[] memory _oBals, int128[] memory _nBals ) internal view returns (int128 curves_) { enforceHalts(curve, _oGLiq, _nGLiq, _oBals, _nBals, curve.weights); int128 _omega; int128 _psi; { int128 _beta = curve.beta; int128 _delta = curve.delta; int128[] memory _weights = curve.weights; _omega = calculateFee(_oGLiq, _oBals, _beta, _delta, _weights); _psi = calculateFee(_nGLiq, _nBals, _beta, _delta, _weights); } int128 _feeDiff = _psi.sub(_omega); int128 _liqDiff = _nGLiq.sub(_oGLiq); int128 _oUtil = _oGLiq.sub(_omega); int128 _totalShells = curve.totalSupply.divu(1e18); int128 _curveMultiplier; if (_totalShells == 0) { curves_ = _nGLiq.sub(_psi); } else if (_feeDiff >= 0) { _curveMultiplier = _liqDiff.sub(_feeDiff).div(_oUtil); } else { _curveMultiplier = _liqDiff.sub(curve.lambda.mul(_feeDiff)); _curveMultiplier = _curveMultiplier.div(_oUtil); } if (_totalShells != 0) { curves_ = _totalShells.mul(_curveMultiplier); } } function enforceSwapInvariant( int128 _oGLiq, int128 _omega, int128 _nGLiq, int128 _psi ) private pure { int128 _nextUtil = _nGLiq - _psi; int128 _prevUtil = _oGLiq - _omega; int128 _diff = _nextUtil - _prevUtil; require(0 < _diff || _diff >= MAX_DIFF, "Curve/swap-invariant-violation"); } function enforceHalts( Storage.Curve storage curve, int128 _oGLiq, int128 _nGLiq, int128[] memory _oBals, int128[] memory _nBals, int128[] memory _weights ) private view { uint256 _length = _nBals.length; int128 _alpha = curve.alpha; for (uint256 i = 0; i < _length; i++) { int128 _nIdeal = _nGLiq.mul(_weights[i]); if (_nBals[i] > _nIdeal) { int128 _upperAlpha = ONE + _alpha; int128 _nHalt = _nIdeal.mul(_upperAlpha); if (_nBals[i] > _nHalt) { int128 _oHalt = _oGLiq.mul(_weights[i]).mul(_upperAlpha); if (_oBals[i] < _oHalt) revert("Curve/upper-halt"); if (_nBals[i] - _nHalt > _oBals[i] - _oHalt) revert("Curve/upper-halt"); } } else { int128 _lowerAlpha = ONE - _alpha; int128 _nHalt = _nIdeal.mul(_lowerAlpha); if (_nBals[i] < _nHalt) { int128 _oHalt = _oGLiq.mul(_weights[i]); _oHalt = _oHalt.mul(_lowerAlpha); if (_oBals[i] > _oHalt) revert("Curve/lower-halt"); if (_nHalt - _nBals[i] > _oHalt - _oBals[i]) revert("Curve/lower-halt"); } } } } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "../lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol"; import "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol"; import "./lib/ABDKMath64x64.sol"; import "./Storage.sol"; import "./CurveMath.sol"; library Orchestrator { using SafeERC20 for IERC20; using ABDKMath64x64 for int128; using ABDKMath64x64 for uint256; int128 private constant ONE_WEI = 0x12; event ParametersSet(uint256 alpha, uint256 beta, uint256 delta, uint256 epsilon, uint256 lambda); event AssetIncluded(address indexed numeraire, address indexed reserve, uint256 weight); event AssimilatorIncluded( address indexed derivative, address indexed numeraire, address indexed reserve, address assimilator ); function setParams( Storage.Curve storage curve, uint256 _alpha, uint256 _beta, uint256 _feeAtHalt, uint256 _epsilon, uint256 _lambda ) external { require(0 < _alpha && _alpha < 1e18, "Curve/parameter-invalid-alpha"); require(_beta < _alpha, "Curve/parameter-invalid-beta"); require(_feeAtHalt <= 5e17, "Curve/parameter-invalid-max"); require(_epsilon <= 1e16, "Curve/parameter-invalid-epsilon"); require(_lambda <= 1e18, "Curve/parameter-invalid-lambda"); int128 _omega = getFee(curve); curve.alpha = (_alpha + 1).divu(1e18); curve.beta = (_beta + 1).divu(1e18); curve.delta = (_feeAtHalt).divu(1e18).div(uint256(2).fromUInt().mul(curve.alpha.sub(curve.beta))) + ONE_WEI; curve.epsilon = (_epsilon + 1).divu(1e18); curve.lambda = (_lambda + 1).divu(1e18); int128 _psi = getFee(curve); require(_omega >= _psi, "Curve/parameters-increase-fee"); emit ParametersSet(_alpha, _beta, curve.delta.mulu(1e18), _epsilon, _lambda); } function setAssimilator( Storage.Curve storage curve, address _baseCurrency, address _baseAssim, address _quoteCurrency, address _quoteAssim ) external { require(_baseCurrency != address(0), "Curve/numeraire-cannot-be-zeroth-address"); require(_baseAssim != address(0), "Curve/numeraire-assimilator-cannot-be-zeroth-address"); require(_quoteCurrency != address(0), "Curve/reserve-cannot-be-zeroth-address"); require(_quoteAssim != address(0), "Curve/reserve-assimilator-cannot-be-zeroth-address"); Storage.Assimilator storage _baseAssimilator = curve.assimilators[_baseCurrency]; _baseAssimilator.addr = _baseAssim; Storage.Assimilator storage _quoteAssimilator = curve.assimilators[_quoteCurrency]; _quoteAssimilator.addr = _quoteAssim; curve.assets[0] = _baseAssimilator; curve.assets[1] = _quoteAssimilator; } function getFee(Storage.Curve storage curve) private view returns (int128 fee_) { int128 _gLiq; // Always pairs int128[] memory _bals = new int128[](2); for (uint256 i = 0; i < _bals.length; i++) { int128 _bal = Assimilators.viewNumeraireBalance(curve.assets[i].addr); _bals[i] = _bal; _gLiq += _bal; } fee_ = CurveMath.calculateFee(_gLiq, _bals, curve.beta, curve.delta, curve.weights); } function initialize( Storage.Curve storage curve, address[] storage numeraires, address[] storage reserves, address[] storage derivatives, address[] calldata _assets, uint256[] calldata _assetWeights ) external { require(_assetWeights.length == 2, "Curve/assetWeights-must-be-length-two"); require(_assets.length % 5 == 0, "Curve/assets-must-be-divisible-by-five"); for (uint256 i = 0; i < _assetWeights.length; i++) { uint256 ix = i * 5; numeraires.push(_assets[ix]); derivatives.push(_assets[ix]); reserves.push(_assets[2 + ix]); if (_assets[ix] != _assets[2 + ix]) derivatives.push(_assets[2 + ix]); includeAsset( curve, _assets[ix], // numeraire _assets[1 + ix], // numeraire assimilator _assets[2 + ix], // reserve _assets[3 + ix], // reserve assimilator _assets[4 + ix], // reserve approve to _assetWeights[i] ); } } function includeAsset( Storage.Curve storage curve, address _numeraire, address _numeraireAssim, address _reserve, address _reserveAssim, address _reserveApproveTo, uint256 _weight ) private { require(_numeraire != address(0), "Curve/numeraire-cannot-be-zeroth-address"); require(_numeraireAssim != address(0), "Curve/numeraire-assimilator-cannot-be-zeroth-address"); require(_reserve != address(0), "Curve/reserve-cannot-be-zeroth-address"); require(_reserveAssim != address(0), "Curve/reserve-assimilator-cannot-be-zeroth-address"); require(_weight < 1e18, "Curve/weight-must-be-less-than-one"); if (_numeraire != _reserve) IERC20(_numeraire).safeApprove(_reserveApproveTo, type(uint).max); Storage.Assimilator storage _numeraireAssimilator = curve.assimilators[_numeraire]; _numeraireAssimilator.addr = _numeraireAssim; _numeraireAssimilator.ix = uint8(curve.assets.length); Storage.Assimilator storage _reserveAssimilator = curve.assimilators[_reserve]; _reserveAssimilator.addr = _reserveAssim; _reserveAssimilator.ix = uint8(curve.assets.length); int128 __weight = _weight.divu(1e18).add(uint256(1).divu(1e18)); curve.weights.push(__weight); curve.assets.push(_numeraireAssimilator); emit AssetIncluded(_numeraire, _reserve, _weight); emit AssimilatorIncluded(_numeraire, _numeraire, _reserve, _numeraireAssim); if (_numeraireAssim != _reserveAssim) { emit AssimilatorIncluded(_reserve, _numeraire, _reserve, _reserveAssim); } } function viewCurve(Storage.Curve storage curve) external view returns ( uint256 alpha_, uint256 beta_, uint256 delta_, uint256 epsilon_, uint256 lambda_ ) { alpha_ = curve.alpha.mulu(1e18); beta_ = curve.beta.mulu(1e18); delta_ = curve.delta.mulu(1e18); epsilon_ = curve.epsilon.mulu(1e18); lambda_ = curve.lambda.mulu(1e18); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "./Assimilators.sol"; import "./Storage.sol"; import "./lib/UnsafeMath64x64.sol"; import "./lib/ABDKMath64x64.sol"; import "./CurveMath.sol"; import "./Structs.sol"; library ProportionalLiquidity { using ABDKMath64x64 for uint256; using ABDKMath64x64 for int128; using UnsafeMath64x64 for int128; event Transfer(address indexed from, address indexed to, uint256 value); int128 public constant ONE = 0x10000000000000000; int128 public constant ONE_WEI = 0x12; function proportionalDeposit(Storage.Curve storage curve, DepositData memory depositData) external returns (uint256 curves_, uint256[] memory) { int128 __deposit = depositData.deposits.divu(1e18); uint256 _length = curve.assets.length; uint256[] memory deposits_ = new uint256[](_length); (int128 _oGLiq, int128[] memory _oBals) = getGrossLiquidityAndBalancesForDeposit(curve); // Needed to calculate liquidity invariant // (int128 _oGLiqProp, int128[] memory _oBalsProp) = getGrossLiquidityAndBalances(curve); // No liquidity, oracle sets the ratio if (_oGLiq == 0) { for (uint256 i = 0; i < _length; i++) { // Variable here to avoid stack-too-deep errors int128 _d = __deposit.mul(curve.weights[i]); deposits_[i] = Assimilators.intakeNumeraire(curve.assets[i].addr, _d.add(ONE_WEI)); } } else { // We already have an existing pool ratio // which must be respected int128 _multiplier = __deposit.div(_oGLiq); uint256 _baseWeight = curve.weights[0].mulu(1e18); uint256 _quoteWeight = curve.weights[1].mulu(1e18); for (uint256 i = 0; i < _length; i++) { IntakeNumLpRatioInfo memory info; info.baseWeight = _baseWeight; info.minBase = depositData.minBase; info.maxBase = depositData.maxBase; info.quoteWeight = _quoteWeight; info.minQuote = depositData.minQuote; info.maxQuote = depositData.maxQuote; info.amount = _oBals[i].mul(_multiplier).add(ONE_WEI); deposits_[i] = Assimilators.intakeNumeraireLPRatio( curve.assets[i].addr, info ); } } int128 _totalShells = curve.totalSupply.divu(1e18); int128 _newShells = __deposit; if (_totalShells > 0) { _newShells = __deposit.mul(_totalShells); _newShells = _newShells.div(_oGLiq); } require(_newShells > 0, "Proportional Liquidity/can't mint negative amount"); mint(curve, msg.sender, curves_ = _newShells.mulu(1e18)); return (curves_, deposits_); } function viewProportionalDeposit(Storage.Curve storage curve, uint256 _deposit) external view returns (uint256 curves_, uint256[] memory) { int128 __deposit = _deposit.divu(1e18); uint256 _length = curve.assets.length; (int128 _oGLiq, int128[] memory _oBals) = getGrossLiquidityAndBalancesForDeposit(curve); uint256[] memory deposits_ = new uint256[](_length); // No liquidity if (_oGLiq == 0) { for (uint256 i = 0; i < _length; i++) { deposits_[i] = Assimilators.viewRawAmount( curve.assets[i].addr, __deposit.mul(curve.weights[i]).add(ONE_WEI) ); } } else { // We already have an existing pool ratio // this must be respected int128 _multiplier = __deposit.div(_oGLiq); uint256 _baseWeight = curve.weights[0].mulu(1e18); uint256 _quoteWeight = curve.weights[1].mulu(1e18); // Deposits into the pool is determined by existing LP ratio for (uint256 i = 0; i < _length; i++) { deposits_[i] = Assimilators.viewRawAmountLPRatio( curve.assets[i].addr, _baseWeight, _quoteWeight, _oBals[i].mul(_multiplier).add(ONE_WEI) ); } } int128 _totalShells = curve.totalSupply.divu(1e18); int128 _newShells = __deposit; if (_totalShells > 0) { _newShells = __deposit.mul(_totalShells); _newShells = _newShells.div(_oGLiq); } curves_ = _newShells.mulu(1e18); return (curves_, deposits_); } function proportionalWithdraw(Storage.Curve storage curve, uint256 _withdrawal) external returns (uint256[] memory) { uint256 _length = curve.assets.length; (, int128[] memory _oBals) = getGrossLiquidityAndBalances(curve); uint256[] memory withdrawals_ = new uint256[](_length); int128 _totalShells = curve.totalSupply.divu(1e18); int128 __withdrawal = _withdrawal.divu(1e18); int128 _multiplier = __withdrawal.div(_totalShells); for (uint256 i = 0; i < _length; i++) { withdrawals_[i] = Assimilators.outputNumeraire( curve.assets[i].addr, msg.sender, _oBals[i].mul(_multiplier) ); } burn(curve, msg.sender, _withdrawal); return withdrawals_; } function viewProportionalWithdraw(Storage.Curve storage curve, uint256 _withdrawal) external view returns (uint256[] memory) { uint256 _length = curve.assets.length; (, int128[] memory _oBals) = getGrossLiquidityAndBalances(curve); uint256[] memory withdrawals_ = new uint256[](_length); int128 _multiplier = _withdrawal.divu(1e18).div(curve.totalSupply.divu(1e18)); for (uint256 i = 0; i < _length; i++) { withdrawals_[i] = Assimilators.viewRawAmount(curve.assets[i].addr, _oBals[i].mul(_multiplier)); } return withdrawals_; } function getGrossLiquidityAndBalancesForDeposit(Storage.Curve storage curve) internal view returns (int128 grossLiquidity_, int128[] memory) { uint256 _length = curve.assets.length; int128[] memory balances_ = new int128[](_length); uint256 _baseWeight = curve.weights[0].mulu(1e18); uint256 _quoteWeight = curve.weights[1].mulu(1e18); for (uint256 i = 0; i < _length; i++) { int128 _bal = Assimilators.viewNumeraireBalanceLPRatio(_baseWeight, _quoteWeight, curve.assets[i].addr); balances_[i] = _bal; grossLiquidity_ += _bal; } return (grossLiquidity_, balances_); } function getGrossLiquidityAndBalances(Storage.Curve storage curve) internal view returns (int128 grossLiquidity_, int128[] memory) { uint256 _length = curve.assets.length; int128[] memory balances_ = new int128[](_length); for (uint256 i = 0; i < _length; i++) { int128 _bal = Assimilators.viewNumeraireBalance(curve.assets[i].addr); balances_[i] = _bal; grossLiquidity_ += _bal; } return (grossLiquidity_, balances_); } function burn( Storage.Curve storage curve, address account, uint256 amount ) private { curve.balances[account] = burnSub(curve.balances[account], amount); curve.totalSupply = burnSub(curve.totalSupply, amount); emit Transfer(msg.sender, address(0), amount); } function mint( Storage.Curve storage curve, address account, uint256 amount ) private { uint256 minLock = 1e6; if (curve.totalSupply == 0) { require(amount > minLock, "Proportional Liquidity/amount too small!"); uint256 toMintAmt = amount - minLock; // mint to lp provider curve.totalSupply = mintAdd(curve.totalSupply, toMintAmt); curve.balances[account] = mintAdd( curve.balances[account], toMintAmt ); emit Transfer(address(0), msg.sender, toMintAmt); // mint to 0 address curve.totalSupply = mintAdd(curve.totalSupply, minLock); curve.balances[address(0)] = mintAdd( curve.balances[address(0)], minLock ); emit Transfer(address(this), address(0), minLock); } else { curve.totalSupply = mintAdd(curve.totalSupply, amount); curve.balances[account] = mintAdd(curve.balances[account], amount); emit Transfer(address(0), msg.sender, amount); } } function mintAdd(uint256 x, uint256 y) private pure returns (uint256 z) { require((z = x + y) >= x, "Curve/mint-overflow"); } function burnSub(uint256 x, uint256 y) private pure returns (uint256 z) { require((z = x - y) <= x, "Curve/burn-underflow"); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "./interfaces/IOracle.sol"; import "./Assimilators.sol"; contract Storage { struct Curve { // Curve parameters int128 alpha; int128 beta; int128 delta; int128 epsilon; int128 lambda; int128[] weights; // Assets and their assimilators Assimilator[] assets; mapping(address => Assimilator) assimilators; // Oracles to determine the price // Note that 0'th index should always be USDC 1e18 // Oracle's pricing should be denominated in Currency/USDC mapping(address => IOracle) oracles; // ERC20 Interface uint256 totalSupply; mapping(address => uint256) balances; mapping(address => mapping(address => uint256)) allowances; } struct Assimilator { address addr; uint8 ix; } // Curve parameters Curve public curve; // Ownable address public owner; string public name; string public symbol; uint8 public constant decimals = 18; address[] public derivatives; address[] public numeraires; address[] public reserves; // Curve operational state bool public frozen = false; bool public emergency = false; bool internal notEntered = true; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "./interfaces/ICurveFactory.sol"; import "./interfaces/IOracle.sol"; struct OriginSwapData { address _origin; address _target; uint256 _originAmount; address _recipient; address _curveFactory; } struct TargetSwapData { address _origin; address _target; uint256 _targetAmount; address _recipient; address _curveFactory; } struct SwapInfo { int128 totalAmount; int128 totalFee; int128 amountToUser; int128 amountToTreasury; int128 protocolFeePercentage; address treasury; ICurveFactory curveFactory; } struct CurveInfo { string _name; string _symbol; address _baseCurrency; address _quoteCurrency; uint256 _baseWeight; uint256 _quoteWeight; IOracle _baseOracle; IOracle _quoteOracle; uint256 _alpha; uint256 _beta; uint256 _feeAtHalt; uint256 _epsilon; uint256 _lambda; } struct DepositData { uint256 deposits; uint256 minQuote; uint256 minBase; uint256 maxQuote; uint256 maxBase; } struct IntakeNumLpRatioInfo { uint256 baseWeight; uint256 minBase; uint256 maxBase; uint256 quoteWeight; uint256 minQuote; uint256 maxQuote; int128 amount; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; pragma experimental ABIEncoderV2; import "./Assimilators.sol"; import "./Storage.sol"; import "./CurveMath.sol"; import "./lib/UnsafeMath64x64.sol"; import "./lib/ABDKMath64x64.sol"; import "../lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; import "../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; import "./CurveFactory.sol"; import "./Structs.sol"; library Swaps { using ABDKMath64x64 for int128; using ABDKMath64x64 for int256; using UnsafeMath64x64 for int128; using ABDKMath64x64 for uint256; using SafeMath for uint256; event Trade( address indexed trader, address indexed origin, address indexed target, uint256 originAmount, uint256 targetAmount, int128 rawProtocolFee ); int128 public constant ONE = 0x10000000000000000; function getOriginAndTarget( Storage.Curve storage curve, address _o, address _t ) private view returns (Storage.Assimilator memory, Storage.Assimilator memory) { Storage.Assimilator memory o_ = curve.assimilators[_o]; Storage.Assimilator memory t_ = curve.assimilators[_t]; require(o_.addr != address(0), "Curve/origin-not-supported"); require(t_.addr != address(0), "Curve/target-not-supported"); return (o_, t_); } function originSwap(Storage.Curve storage curve, OriginSwapData memory _swapData) external returns ( uint256 tAmt_ ) { (Storage.Assimilator memory _o, Storage.Assimilator memory _t) = getOriginAndTarget(curve, _swapData._origin, _swapData._target); if (_o.ix == _t.ix) return Assimilators.outputNumeraire( _t.addr, _swapData._recipient, Assimilators.intakeRaw(_o.addr, _swapData._originAmount) ); SwapInfo memory _swapInfo; (int128 _amt, int128 _oGLiq, int128 _nGLiq, int128[] memory _oBals, int128[] memory _nBals) = getOriginSwapData(curve, _o.ix, _t.ix, _o.addr, _swapData._originAmount); _swapInfo.totalAmount = _amt; _amt = CurveMath.calculateTrade(curve, _oGLiq, _nGLiq, _oBals, _nBals, _amt, _t.ix); _swapInfo.curveFactory = ICurveFactory(_swapData._curveFactory); _swapInfo.amountToUser = _amt.us_mul(ONE - curve.epsilon); // _swapInfo.totalFee = _swapInfo.totalAmount + _swapInfo.amountToUser; _swapInfo.totalFee = _swapInfo.amountToUser - _amt; _swapInfo.protocolFeePercentage = _swapInfo.curveFactory.getProtocolFee(); _swapInfo.treasury = _swapInfo.curveFactory.getProtocolTreasury(); _swapInfo.amountToTreasury = _swapInfo.totalFee.muli(_swapInfo.protocolFeePercentage).divi(100000); Assimilators.transferFee(_t.addr, _swapInfo.amountToTreasury, _swapInfo.treasury); tAmt_ = Assimilators.outputNumeraire(_t.addr, _swapData._recipient, _swapInfo.amountToUser); emit Trade(msg.sender, _swapData._origin, _swapData._target, _swapData._originAmount, tAmt_, _swapInfo.amountToTreasury); } function viewOriginSwap( Storage.Curve storage curve, address _origin, address _target, uint256 _originAmount ) external view returns (uint256 tAmt_) { (Storage.Assimilator memory _o, Storage.Assimilator memory _t) = getOriginAndTarget(curve, _origin, _target); if (_o.ix == _t.ix) return Assimilators.viewRawAmount(_t.addr, Assimilators.viewNumeraireAmount(_o.addr, _originAmount)); (int128 _amt, int128 _oGLiq, int128 _nGLiq, int128[] memory _nBals, int128[] memory _oBals) = viewOriginSwapData(curve, _o.ix, _t.ix, _originAmount, _o.addr); _amt = CurveMath.calculateTrade(curve, _oGLiq, _nGLiq, _oBals, _nBals, _amt, _t.ix); _amt = _amt.us_mul(ONE - curve.epsilon); tAmt_ = Assimilators.viewRawAmount(_t.addr, _amt.abs()); } function targetSwap(Storage.Curve storage curve, TargetSwapData memory _swapData) external returns ( uint256 oAmt_ ) { (Storage.Assimilator memory _o, Storage.Assimilator memory _t) = getOriginAndTarget(curve, _swapData._origin, _swapData._target); if (_o.ix == _t.ix) return Assimilators.intakeNumeraire( _o.addr, Assimilators.outputRaw(_t.addr, _swapData._recipient, _swapData._targetAmount) ); (int128 _amt, int128 _oGLiq, int128 _nGLiq, int128[] memory _oBals, int128[] memory _nBals) = getTargetSwapData(curve, _t.ix, _o.ix, _t.addr, _swapData._recipient, _swapData._targetAmount); _amt = CurveMath.calculateTrade(curve, _oGLiq, _nGLiq, _oBals, _nBals, _amt, _o.ix); SwapInfo memory _swapInfo; _swapInfo.totalAmount = _amt; _swapInfo.curveFactory = ICurveFactory(_swapData._curveFactory); _swapInfo.amountToUser = _amt.us_mul(ONE + curve.epsilon); _swapInfo.totalFee = _swapInfo.amountToUser - _amt; _swapInfo.protocolFeePercentage = _swapInfo.curveFactory.getProtocolFee(); _swapInfo.treasury = _swapInfo.curveFactory.getProtocolTreasury(); _swapInfo.amountToTreasury = _swapInfo.totalFee.muli(_swapInfo.protocolFeePercentage).divi(100000); Assimilators.transferFee(_o.addr, _swapInfo.amountToTreasury, _swapInfo.treasury); oAmt_ = Assimilators.intakeNumeraire(_o.addr, _swapInfo.amountToUser); emit Trade(msg.sender, _swapData._origin, _swapData._target, oAmt_, _swapData._targetAmount, _swapInfo.amountToTreasury); } function viewTargetSwap( Storage.Curve storage curve, address _origin, address _target, uint256 _targetAmount ) external view returns (uint256 oAmt_) { (Storage.Assimilator memory _o, Storage.Assimilator memory _t) = getOriginAndTarget(curve, _origin, _target); if (_o.ix == _t.ix) return Assimilators.viewRawAmount(_o.addr, Assimilators.viewNumeraireAmount(_t.addr, _targetAmount)); (int128 _amt, int128 _oGLiq, int128 _nGLiq, int128[] memory _nBals, int128[] memory _oBals) = viewTargetSwapData(curve, _t.ix, _o.ix, _targetAmount, _t.addr); _amt = CurveMath.calculateTrade(curve, _oGLiq, _nGLiq, _oBals, _nBals, _amt, _o.ix); _amt = _amt.us_mul(ONE + curve.epsilon); oAmt_ = Assimilators.viewRawAmount(_o.addr, _amt); } function getOriginSwapData( Storage.Curve storage curve, uint256 _inputIx, uint256 _outputIx, address _assim, uint256 _amt ) private returns ( int128 amt_, int128 oGLiq_, int128 nGLiq_, int128[] memory, int128[] memory ) { uint256 _length = curve.assets.length; int128[] memory oBals_ = new int128[](_length); int128[] memory nBals_ = new int128[](_length); Storage.Assimilator[] memory _reserves = curve.assets; for (uint256 i = 0; i < _length; i++) { if (i != _inputIx) nBals_[i] = oBals_[i] = Assimilators.viewNumeraireBalance(_reserves[i].addr); else { int128 _bal; (amt_, _bal) = Assimilators.intakeRawAndGetBalance(_assim, _amt); oBals_[i] = _bal.sub(amt_); nBals_[i] = _bal; } oGLiq_ += oBals_[i]; nGLiq_ += nBals_[i]; } nGLiq_ = nGLiq_.sub(amt_); nBals_[_outputIx] = ABDKMath64x64.sub(nBals_[_outputIx], amt_); return (amt_, oGLiq_, nGLiq_, oBals_, nBals_); } function getTargetSwapData( Storage.Curve storage curve, uint256 _inputIx, uint256 _outputIx, address _assim, address _recipient, uint256 _amt ) private returns ( int128 amt_, int128 oGLiq_, int128 nGLiq_, int128[] memory, int128[] memory ) { uint256 _length = curve.assets.length; int128[] memory oBals_ = new int128[](_length); int128[] memory nBals_ = new int128[](_length); Storage.Assimilator[] memory _reserves = curve.assets; for (uint256 i = 0; i < _length; i++) { if (i != _inputIx) nBals_[i] = oBals_[i] = Assimilators.viewNumeraireBalance(_reserves[i].addr); else { int128 _bal; (amt_, _bal) = Assimilators.outputRawAndGetBalance(_assim, _recipient, _amt); oBals_[i] = _bal.sub(amt_); nBals_[i] = _bal; } oGLiq_ += oBals_[i]; nGLiq_ += nBals_[i]; } nGLiq_ = nGLiq_.sub(amt_); nBals_[_outputIx] = ABDKMath64x64.sub(nBals_[_outputIx], amt_); return (amt_, oGLiq_, nGLiq_, oBals_, nBals_); } function viewOriginSwapData( Storage.Curve storage curve, uint256 _inputIx, uint256 _outputIx, uint256 _amt, address _assim ) private view returns ( int128 amt_, int128 oGLiq_, int128 nGLiq_, int128[] memory, int128[] memory ) { uint256 _length = curve.assets.length; int128[] memory nBals_ = new int128[](_length); int128[] memory oBals_ = new int128[](_length); for (uint256 i = 0; i < _length; i++) { if (i != _inputIx) nBals_[i] = oBals_[i] = Assimilators.viewNumeraireBalance(curve.assets[i].addr); else { int128 _bal; (amt_, _bal) = Assimilators.viewNumeraireAmountAndBalance(_assim, _amt); oBals_[i] = _bal; nBals_[i] = _bal.add(amt_); } oGLiq_ += oBals_[i]; nGLiq_ += nBals_[i]; } nGLiq_ = nGLiq_.sub(amt_); nBals_[_outputIx] = ABDKMath64x64.sub(nBals_[_outputIx], amt_); return (amt_, oGLiq_, nGLiq_, nBals_, oBals_); } function viewTargetSwapData( Storage.Curve storage curve, uint256 _inputIx, uint256 _outputIx, uint256 _amt, address _assim ) private view returns ( int128 amt_, int128 oGLiq_, int128 nGLiq_, int128[] memory, int128[] memory ) { uint256 _length = curve.assets.length; int128[] memory nBals_ = new int128[](_length); int128[] memory oBals_ = new int128[](_length); for (uint256 i = 0; i < _length; i++) { if (i != _inputIx) nBals_[i] = oBals_[i] = Assimilators.viewNumeraireBalance(curve.assets[i].addr); else { int128 _bal; (amt_, _bal) = Assimilators.viewNumeraireAmountAndBalance(_assim, _amt); amt_ = amt_.neg(); oBals_[i] = _bal; nBals_[i] = _bal.add(amt_); } oGLiq_ += oBals_[i]; nGLiq_ += nBals_[i]; } nGLiq_ = nGLiq_.sub(amt_); nBals_[_outputIx] = ABDKMath64x64.sub(nBals_[_outputIx], amt_); return (amt_, oGLiq_, nGLiq_, nBals_, oBals_); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "./Storage.sol"; import "./Assimilators.sol"; import "./lib/ABDKMath64x64.sol"; library ViewLiquidity { using ABDKMath64x64 for int128; function viewLiquidity(Storage.Curve storage curve) external view returns (uint256 total_, uint256[] memory individual_) { uint256 _length = curve.assets.length; individual_ = new uint256[](_length); for (uint256 i = 0; i < _length; i++) { uint256 _liquidity = Assimilators.viewNumeraireBalance(curve.assets[i].addr).mulu(1e18); total_ += _liquidity; individual_[i] = _liquidity; } return (total_, individual_); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "../../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol"; import "../../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; import "../../lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; import "../../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol"; import "../lib/ABDKMath64x64.sol"; import "../interfaces/IAssimilator.sol"; import "../interfaces/IOracle.sol"; contract AssimilatorV2 is IAssimilator, ReentrancyGuard { using ABDKMath64x64 for int128; using ABDKMath64x64 for uint256; using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public immutable usdc; IOracle public immutable oracle; IERC20 public immutable token; uint256 public immutable oracleDecimals; uint256 public immutable tokenDecimals; // solhint-disable-next-line constructor( IOracle _oracle, address _token, uint256 _tokenDecimals, uint256 _oracleDecimals ) { oracle = _oracle; token = IERC20(_token); oracleDecimals = _oracleDecimals; tokenDecimals = _tokenDecimals; usdc = IERC20(quoteAddress()); } function quoteAddress () internal view returns (address) { uint256 chainID; assembly { chainID := chainid() } if(chainID == 1) { return 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48; }else if (chainID == 137) { return 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174; }else{ return address(0); } } function getRate() public view override returns (uint256) { (, int256 price, , , ) = oracle.latestRoundData(); return uint256(price); } // takes raw eurs amount, transfers it in, calculates corresponding numeraire amount and returns it function intakeRawAndGetBalance(uint256 _amount) external override returns (int128 amount_, int128 balance_) { token.safeTransferFrom(msg.sender, address(this), _amount); uint256 _balance = token.balanceOf(address(this)); uint256 _rate = getRate(); balance_ = ((_balance * _rate) / 10**oracleDecimals).divu(10**tokenDecimals); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // takes raw eurs amount, transfers it in, calculates corresponding numeraire amount and returns it function intakeRaw(uint256 _amount) external override returns (int128 amount_) { token.safeTransferFrom(msg.sender, address(this), _amount); uint256 _rate = getRate(); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // takes a numeraire amount, calculates the raw amount of eurs, transfers it in and returns the corresponding raw amount function intakeNumeraire(int128 _amount) external override returns (uint256 amount_) { uint256 _rate = getRate(); amount_ = (_amount.mulu(10**tokenDecimals) * 10**oracleDecimals) / _rate; token.safeTransferFrom(msg.sender, address(this), amount_); } // takes a numeraire amount, calculates the raw amount of eurs, transfers it in and returns the corresponding raw amount function intakeNumeraireLPRatio( uint256 _baseWeight, uint256 _minBaseAmount, uint256 _maxBaseAmount, uint256 _quoteWeight, uint256 _minQuoteAmount, uint256 _maxQuoteAmount, address _addr, int128 _amount ) external override returns (uint256 amount_) { uint256 _tokenBal = token.balanceOf(_addr); if (_tokenBal <= 0) return 0; _tokenBal = _tokenBal.mul(1e18).div(_baseWeight); uint256 _usdcBal = usdc.balanceOf(_addr).mul(1e18).div(_quoteWeight); // Rate is in 1e6 uint256 _rate = _usdcBal.mul(10**tokenDecimals).div(_tokenBal); amount_ = (_amount.mulu(10**tokenDecimals) * 1e6) / _rate; if (address(token) == address(usdc)) { require(amount_ >= _minQuoteAmount && amount_ <= _maxQuoteAmount, "Assimilator/LP Ratio imbalanced!"); } else { require(amount_ >= _minBaseAmount && amount_ <= _maxBaseAmount, "Assimilator/LP Ratio imbalanced!"); } token.safeTransferFrom(msg.sender, address(this), amount_); } // takes a raw amount of eurs and transfers it out, returns numeraire value of the raw amount function outputRawAndGetBalance(address _dst, uint256 _amount) external override returns (int128 amount_, int128 balance_){ uint256 _rate = getRate(); token.safeTransfer(_dst, _amount); uint256 _balance = token.balanceOf(address(this)); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu(10**tokenDecimals); balance_ = ((_balance * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // takes a raw amount of eurs and transfers it out, returns numeraire value of the raw amount function outputRaw(address _dst, uint256 _amount) external override returns (int128 amount_) { uint256 _rate = getRate(); token.safeTransfer(_dst, _amount); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu(10**tokenDecimals); } // takes a numeraire value of eurs, figures out the raw amount, transfers raw amount out, and returns raw amount function outputNumeraire(address _dst, int128 _amount) external override returns (uint256 amount_) { uint256 _rate = getRate(); amount_ = (_amount.mulu(10**tokenDecimals) * 10**oracleDecimals) / _rate; token.safeTransfer(_dst, amount_); } // takes a numeraire amount and returns the raw amount function viewRawAmount(int128 _amount) external view override returns (uint256 amount_) { uint256 _rate = getRate(); amount_ = (_amount.mulu(10**tokenDecimals) * 10**oracleDecimals) / _rate; } function viewRawAmountLPRatio( uint256 _baseWeight, uint256 _quoteWeight, address _addr, int128 _amount ) external view override returns (uint256 amount_) { uint256 _tokenBal = token.balanceOf(_addr); if (_tokenBal <= 0) return 0; // 1e2 _tokenBal = _tokenBal.mul(1e18).div(_baseWeight); // 1e6 uint256 _usdcBal = usdc.balanceOf(_addr).mul(1e18).div(_quoteWeight); // Rate is in 1e6 uint256 _rate = _usdcBal.mul(10**tokenDecimals).div(_tokenBal); amount_ = (_amount.mulu(10**tokenDecimals) * 1e6) / _rate; } // takes a raw amount and returns the numeraire amount function viewNumeraireAmount(uint256 _amount) external view override returns (int128 amount_) { uint256 _rate = getRate(); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // views the numeraire value of the current balance of the reserve, in this case eurs function viewNumeraireBalance(address _addr) external view override returns (int128 balance_) { uint256 _rate = getRate(); uint256 _balance = token.balanceOf(_addr); if (_balance <= 0) return ABDKMath64x64.fromUInt(0); balance_ = ((_balance * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // views the numeraire value of the current balance of the reserve, in this case eurs function viewNumeraireAmountAndBalance(address _addr, uint256 _amount) external view override returns (int128 amount_, int128 balance_) { uint256 _rate = getRate(); amount_ = ((_amount * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); uint256 _balance = token.balanceOf(_addr); balance_ = ((_balance * _rate) / 10**oracleDecimals).divu( 10**tokenDecimals ); } // views the numeraire value of the current balance of the reserve, in this case eurs // instead of calculating with chainlink's "rate" it'll be determined by the existing // token ratio. This is in here to prevent LPs from losing out on future oracle price updates function viewNumeraireBalanceLPRatio( uint256 _baseWeight, uint256 _quoteWeight, address _addr ) external view override returns (int128 balance_) { uint256 _tokenBal = token.balanceOf(_addr); if (_tokenBal <= 0) return ABDKMath64x64.fromUInt(0); uint256 _usdcBal = usdc.balanceOf(_addr).mul(1e18).div(_quoteWeight); // Rate is in 1e6 uint256 _rate = _usdcBal.mul(1e18).div( _tokenBal.mul(1e18).div(_baseWeight) ); balance_ = ((_tokenBal * _rate) / 1e6).divu(1e18); } function transferFee(int128 _amount, address _treasury) external override { uint256 _rate = getRate(); if (_amount < 0) _amount = -(_amount); uint256 amount = (_amount.mulu(10**tokenDecimals) * 10**oracleDecimals) / _rate; token.safeTransfer(_treasury, amount); } }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; interface IAssimilator { function oracleDecimals() external view returns(uint256); function tokenDecimals() external view returns(uint256); function getRate() external view returns (uint256); function intakeRaw(uint256 amount) external returns (int128); function intakeRawAndGetBalance(uint256 amount) external returns (int128, int128); function intakeNumeraire(int128 amount) external returns (uint256); function intakeNumeraireLPRatio( uint256, uint256, uint256, uint256, uint256, uint256, address, int128 ) external returns (uint256); function outputRaw(address dst, uint256 amount) external returns (int128); function outputRawAndGetBalance(address dst, uint256 amount) external returns (int128, int128); function outputNumeraire(address dst, int128 amount) external returns (uint256); function viewRawAmount(int128) external view returns (uint256); function viewRawAmountLPRatio( uint256, uint256, address, int128 ) external view returns (uint256); function viewNumeraireAmount(uint256) external view returns (int128); function viewNumeraireBalanceLPRatio( uint256, uint256, address ) external view returns (int128); function viewNumeraireBalance(address) external view returns (int128); function viewNumeraireAmountAndBalance(address, uint256) external view returns (int128, int128); function transferFee(int128, address) external; }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; import "../assimilators/AssimilatorV2.sol"; import "../interfaces/IOracle.sol"; interface IAssimilatorFactory { function getAssimilator(address _token) external view returns (AssimilatorV2); function newAssimilator( IOracle _oracle, address _token, uint256 _tokenDecimals ) external returns (AssimilatorV2); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IConfig { function getGlobalFrozenState() external view returns (bool); function getFlashableState() external view returns (bool); function getProtocolFee() external view returns (int128); function getProtocolTreasury() external view returns (address); function setGlobalFrozen(bool) external; function toggleGlobalGuarded () external; function setPoolGuarded (address, bool) external; function setGlobalGuardAmount (uint256) external; function setPoolCap (address, uint256) external; function setPoolGuardAmount (address, uint256) external; function isPoolGuarded (address) external view returns (bool); function getPoolGuardAmount (address) external view returns (uint256); function getPoolCap (address) external view returns (uint256); function setFlashable(bool) external; function updateProtocolTreasury(address) external; function updateProtocolFee(int128) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface ICurveFactory { function getProtocolFee() external view returns (int128); function getProtocolTreasury() external view returns (address); function getGlobalFrozenState() external view returns (bool); function getFlashableState() external view returns (bool); function isPoolGuarded(address pool) external view returns (bool); function getPoolGuardAmount(address pool) external view returns (uint256); function getPoolCap(address pool) external view returns (uint256); }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. import "../../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; pragma solidity ^0.8.7; interface IERC20Detailed is IERC20 { function name() external returns (string memory); function symbol() external returns (string memory); function decimals() external returns (uint8); function mint(address account, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IFlashCallback { function flashCallback( uint256 fee0, uint256 fee1, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; interface IFreeFromUpTo { function freeFromUpTo(address from, uint256 value) external returns (uint256 freed); }
// SPDX-License-Identifier: MIT // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.13; interface IOracle { function acceptOwnership() external; function accessController() external view returns (address); function aggregator() external view returns (address); function confirmAggregator(address _aggregator) external; function decimals() external view returns (uint8); function description() external view returns (string memory); function getAnswer(uint256 _roundId) external view returns (int256); function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function getTimestamp(uint256 _roundId) external view returns (uint256); function latestAnswer() external view returns (int256); function latestRound() external view returns (uint256); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestTimestamp() external view returns (uint256); function owner() external view returns (address); function phaseAggregators(uint16) external view returns (address); function phaseId() external view returns (uint16); function proposeAggregator(address _aggregator) external; function proposedAggregator() external view returns (address); function proposedGetRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function proposedLatestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function setController(address _accessController) external; function transferOwnership(address _to) external; function version() external view returns (uint256); }
// SPDX-License-Identifier: BSD-4-Clause /* * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting. * Author: Mikhail Vladimirov <[email protected]> */ pragma solidity ^0.8.13; /** * Smart contract library of mathematical functions operating with signed * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is * basically a simple fraction whose numerator is signed 128-bit integer and * denominator is 2^64. As long as denominator is always the same, there is no * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are * represented by int128 type holding only the numerator. */ library ABDKMath64x64 { /* * Minimum value signed 64.64-bit fixed point number may have. */ int128 private constant MIN_64x64 = -0x80000000000000000000000000000000; /* * Maximum value signed 64.64-bit fixed point number may have. */ int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; /** * Convert signed 256-bit integer number into signed 64.64-bit fixed point * number. Revert on overflow. * * @param x signed 256-bit integer number * @return signed 64.64-bit fixed point number */ function fromInt (int256 x) internal pure returns (int128) { unchecked { require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF); return int128 (x << 64); } } /** * Convert signed 64.64 fixed point number into signed 64-bit integer number * rounding down. * * @param x signed 64.64-bit fixed point number * @return signed 64-bit integer number */ function toInt (int128 x) internal pure returns (int64) { unchecked { return int64 (x >> 64); } } /** * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point * number. Revert on overflow. * * @param x unsigned 256-bit integer number * @return signed 64.64-bit fixed point number */ function fromUInt (uint256 x) internal pure returns (int128) { unchecked { require (x <= 0x7FFFFFFFFFFFFFFF); return int128 (int256 (x << 64)); } } /** * Convert signed 64.64 fixed point number into unsigned 64-bit integer * number rounding down. Revert on underflow. * * @param x signed 64.64-bit fixed point number * @return unsigned 64-bit integer number */ function toUInt (int128 x) internal pure returns (uint64) { unchecked { require (x >= 0); return uint64 (uint128 (x >> 64)); } } /** * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point * number rounding down. Revert on overflow. * * @param x signed 128.128-bin fixed point number * @return signed 64.64-bit fixed point number */ function from128x128 (int256 x) internal pure returns (int128) { unchecked { int256 result = x >> 64; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Convert signed 64.64 fixed point number into signed 128.128 fixed point * number. * * @param x signed 64.64-bit fixed point number * @return signed 128.128 fixed point number */ function to128x128 (int128 x) internal pure returns (int256) { unchecked { return int256 (x) << 64; } } /** * Calculate x + y. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function add (int128 x, int128 y) internal pure returns (int128) { unchecked { int256 result = int256(x) + y; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate x - y. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function sub (int128 x, int128 y) internal pure returns (int128) { unchecked { int256 result = int256(x) - y; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate x * y rounding down. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function mul (int128 x, int128 y) internal pure returns (int128) { unchecked { int256 result = int256(x) * y >> 64; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point * number and y is signed 256-bit integer number. Revert on overflow. * * @param x signed 64.64 fixed point number * @param y signed 256-bit integer number * @return signed 256-bit integer number */ function muli (int128 x, int256 y) internal pure returns (int256) { unchecked { if (x == MIN_64x64) { require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF && y <= 0x1000000000000000000000000000000000000000000000000); return -y << 63; } else { bool negativeResult = false; if (x < 0) { x = -x; negativeResult = true; } if (y < 0) { y = -y; // We rely on overflow behavior here negativeResult = !negativeResult; } uint256 absoluteResult = mulu (x, uint256 (y)); if (negativeResult) { require (absoluteResult <= 0x8000000000000000000000000000000000000000000000000000000000000000); return -int256 (absoluteResult); // We rely on overflow behavior here } else { require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); return int256 (absoluteResult); } } } } /** * Calculate x * y rounding down, where x is signed 64.64 fixed point number * and y is unsigned 256-bit integer number. Revert on overflow. * * @param x signed 64.64 fixed point number * @param y unsigned 256-bit integer number * @return unsigned 256-bit integer number */ function mulu (int128 x, uint256 y) internal pure returns (uint256) { unchecked { if (y == 0) return 0; require (x >= 0); uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64; uint256 hi = uint256 (int256 (x)) * (y >> 128); require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); hi <<= 64; require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo); return hi + lo; } } /** * Calculate x / y rounding towards zero. Revert on overflow or when y is * zero. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function div (int128 x, int128 y) internal pure returns (int128) { unchecked { require (y != 0); int256 result = (int256 (x) << 64) / y; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate x / y rounding towards zero, where x and y are signed 256-bit * integer numbers. Revert on overflow or when y is zero. * * @param x signed 256-bit integer number * @param y signed 256-bit integer number * @return signed 64.64-bit fixed point number */ function divi (int256 x, int256 y) internal pure returns (int128) { unchecked { require (y != 0); bool negativeResult = false; if (x < 0) { x = -x; // We rely on overflow behavior here negativeResult = true; } if (y < 0) { y = -y; // We rely on overflow behavior here negativeResult = !negativeResult; } uint128 absoluteResult = divuu (uint256 (x), uint256 (y)); if (negativeResult) { require (absoluteResult <= 0x80000000000000000000000000000000); return -int128 (absoluteResult); // We rely on overflow behavior here } else { require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); return int128 (absoluteResult); // We rely on overflow behavior here } } } /** * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit * integer numbers. Revert on overflow or when y is zero. * * @param x unsigned 256-bit integer number * @param y unsigned 256-bit integer number * @return signed 64.64-bit fixed point number */ function divu (uint256 x, uint256 y) internal pure returns (int128) { unchecked { require (y != 0); uint128 result = divuu (x, y); require (result <= uint128 (MAX_64x64)); return int128 (result); } } /** * Calculate -x. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function neg (int128 x) internal pure returns (int128) { unchecked { require (x != MIN_64x64); return -x; } } /** * Calculate |x|. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function abs (int128 x) internal pure returns (int128) { unchecked { require (x != MIN_64x64); return x < 0 ? -x : x; } } /** * Calculate 1 / x rounding towards zero. Revert on overflow or when x is * zero. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function inv (int128 x) internal pure returns (int128) { unchecked { require (x != 0); int256 result = int256 (0x100000000000000000000000000000000) / x; require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function avg (int128 x, int128 y) internal pure returns (int128) { unchecked { return int128 ((int256 (x) + int256 (y)) >> 1); } } /** * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down. * Revert on overflow or in case x * y is negative. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function gavg (int128 x, int128 y) internal pure returns (int128) { unchecked { int256 m = int256 (x) * int256 (y); require (m >= 0); require (m < 0x4000000000000000000000000000000000000000000000000000000000000000); return int128 (sqrtu (uint256 (m))); } } /** * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number * and y is unsigned 256-bit integer number. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @param y uint256 value * @return signed 64.64-bit fixed point number */ function pow (int128 x, uint256 y) internal pure returns (int128) { unchecked { bool negative = x < 0 && y & 1 == 1; uint256 absX = uint128 (x < 0 ? -x : x); uint256 absResult; absResult = 0x100000000000000000000000000000000; if (absX <= 0x10000000000000000) { absX <<= 63; while (y != 0) { if (y & 0x1 != 0) { absResult = absResult * absX >> 127; } absX = absX * absX >> 127; if (y & 0x2 != 0) { absResult = absResult * absX >> 127; } absX = absX * absX >> 127; if (y & 0x4 != 0) { absResult = absResult * absX >> 127; } absX = absX * absX >> 127; if (y & 0x8 != 0) { absResult = absResult * absX >> 127; } absX = absX * absX >> 127; y >>= 4; } absResult >>= 64; } else { uint256 absXShift = 63; if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; } if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; } if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; } if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; } if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; } if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; } uint256 resultShift = 0; while (y != 0) { require (absXShift < 64); if (y & 0x1 != 0) { absResult = absResult * absX >> 127; resultShift += absXShift; if (absResult > 0x100000000000000000000000000000000) { absResult >>= 1; resultShift += 1; } } absX = absX * absX >> 127; absXShift <<= 1; if (absX >= 0x100000000000000000000000000000000) { absX >>= 1; absXShift += 1; } y >>= 1; } require (resultShift < 64); absResult >>= 64 - resultShift; } int256 result = negative ? -int256 (absResult) : int256 (absResult); require (result >= MIN_64x64 && result <= MAX_64x64); return int128 (result); } } /** * Calculate sqrt (x) rounding down. Revert if x < 0. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function sqrt (int128 x) internal pure returns (int128) { unchecked { require (x >= 0); return int128 (sqrtu (uint256 (int256 (x)) << 64)); } } /** * Calculate binary logarithm of x. Revert if x <= 0. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function log_2 (int128 x) internal pure returns (int128) { unchecked { require (x > 0); int256 msb = 0; int256 xc = x; if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; } if (xc >= 0x100000000) { xc >>= 32; msb += 32; } if (xc >= 0x10000) { xc >>= 16; msb += 16; } if (xc >= 0x100) { xc >>= 8; msb += 8; } if (xc >= 0x10) { xc >>= 4; msb += 4; } if (xc >= 0x4) { xc >>= 2; msb += 2; } if (xc >= 0x2) msb += 1; // No need to shift xc anymore int256 result = msb - 64 << 64; uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb); for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) { ux *= ux; uint256 b = ux >> 255; ux >>= 127 + b; result += bit * int256 (b); } return int128 (result); } } /** * Calculate natural logarithm of x. Revert if x <= 0. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function ln (int128 x) internal pure returns (int128) { unchecked { require (x > 0); return int128 (int256 ( uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128)); } } /** * Calculate binary exponent of x. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function exp_2 (int128 x) internal pure returns (int128) { unchecked { require (x < 0x400000000000000000); // Overflow if (x < -0x400000000000000000) return 0; // Underflow uint256 result = 0x80000000000000000000000000000000; if (x & 0x8000000000000000 > 0) result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128; if (x & 0x4000000000000000 > 0) result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128; if (x & 0x2000000000000000 > 0) result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128; if (x & 0x1000000000000000 > 0) result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128; if (x & 0x800000000000000 > 0) result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128; if (x & 0x400000000000000 > 0) result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128; if (x & 0x200000000000000 > 0) result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128; if (x & 0x100000000000000 > 0) result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128; if (x & 0x80000000000000 > 0) result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128; if (x & 0x40000000000000 > 0) result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128; if (x & 0x20000000000000 > 0) result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128; if (x & 0x10000000000000 > 0) result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128; if (x & 0x8000000000000 > 0) result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128; if (x & 0x4000000000000 > 0) result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128; if (x & 0x2000000000000 > 0) result = result * 0x1000162E525EE054754457D5995292026 >> 128; if (x & 0x1000000000000 > 0) result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128; if (x & 0x800000000000 > 0) result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128; if (x & 0x400000000000 > 0) result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128; if (x & 0x200000000000 > 0) result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128; if (x & 0x100000000000 > 0) result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128; if (x & 0x80000000000 > 0) result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128; if (x & 0x40000000000 > 0) result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128; if (x & 0x20000000000 > 0) result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128; if (x & 0x10000000000 > 0) result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128; if (x & 0x8000000000 > 0) result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128; if (x & 0x4000000000 > 0) result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128; if (x & 0x2000000000 > 0) result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128; if (x & 0x1000000000 > 0) result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128; if (x & 0x800000000 > 0) result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128; if (x & 0x400000000 > 0) result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128; if (x & 0x200000000 > 0) result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128; if (x & 0x100000000 > 0) result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128; if (x & 0x80000000 > 0) result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128; if (x & 0x40000000 > 0) result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128; if (x & 0x20000000 > 0) result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128; if (x & 0x10000000 > 0) result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128; if (x & 0x8000000 > 0) result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128; if (x & 0x4000000 > 0) result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128; if (x & 0x2000000 > 0) result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128; if (x & 0x1000000 > 0) result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128; if (x & 0x800000 > 0) result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128; if (x & 0x400000 > 0) result = result * 0x100000000002C5C85FDF477B662B26945 >> 128; if (x & 0x200000 > 0) result = result * 0x10000000000162E42FEFA3AE53369388C >> 128; if (x & 0x100000 > 0) result = result * 0x100000000000B17217F7D1D351A389D40 >> 128; if (x & 0x80000 > 0) result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128; if (x & 0x40000 > 0) result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128; if (x & 0x20000 > 0) result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128; if (x & 0x10000 > 0) result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128; if (x & 0x8000 > 0) result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128; if (x & 0x4000 > 0) result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128; if (x & 0x2000 > 0) result = result * 0x1000000000000162E42FEFA39F02B772C >> 128; if (x & 0x1000 > 0) result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128; if (x & 0x800 > 0) result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128; if (x & 0x400 > 0) result = result * 0x100000000000002C5C85FDF473DEA871F >> 128; if (x & 0x200 > 0) result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128; if (x & 0x100 > 0) result = result * 0x100000000000000B17217F7D1CF79E949 >> 128; if (x & 0x80 > 0) result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128; if (x & 0x40 > 0) result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128; if (x & 0x20 > 0) result = result * 0x100000000000000162E42FEFA39EF366F >> 128; if (x & 0x10 > 0) result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128; if (x & 0x8 > 0) result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128; if (x & 0x4 > 0) result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128; if (x & 0x2 > 0) result = result * 0x1000000000000000162E42FEFA39EF358 >> 128; if (x & 0x1 > 0) result = result * 0x10000000000000000B17217F7D1CF79AB >> 128; result >>= uint256 (int256 (63 - (x >> 64))); require (result <= uint256 (int256 (MAX_64x64))); return int128 (int256 (result)); } } /** * Calculate natural exponent of x. Revert on overflow. * * @param x signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function exp (int128 x) internal pure returns (int128) { unchecked { require (x < 0x400000000000000000); // Overflow if (x < -0x400000000000000000) return 0; // Underflow return exp_2 ( int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128)); } } /** * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit * integer numbers. Revert on overflow or when y is zero. * * @param x unsigned 256-bit integer number * @param y unsigned 256-bit integer number * @return unsigned 64.64-bit fixed point number */ function divuu (uint256 x, uint256 y) private pure returns (uint128) { unchecked { require (y != 0); uint256 result; if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) result = (x << 64) / y; else { uint256 msb = 192; uint256 xc = x >> 192; if (xc >= 0x100000000) { xc >>= 32; msb += 32; } if (xc >= 0x10000) { xc >>= 16; msb += 16; } if (xc >= 0x100) { xc >>= 8; msb += 8; } if (xc >= 0x10) { xc >>= 4; msb += 4; } if (xc >= 0x4) { xc >>= 2; msb += 2; } if (xc >= 0x2) msb += 1; // No need to shift xc anymore result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1); require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); uint256 hi = result * (y >> 128); uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); uint256 xh = x >> 192; uint256 xl = x << 64; if (xl < lo) xh -= 1; xl -= lo; // We rely on overflow behavior here lo = hi << 128; if (xl < lo) xh -= 1; xl -= lo; // We rely on overflow behavior here assert (xh == hi >> 128); result += xl / y; } require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); return uint128 (result); } } /** * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer * number. * * @param x unsigned 256-bit integer number * @return unsigned 128-bit integer number */ function sqrtu (uint256 x) private pure returns (uint128) { unchecked { if (x == 0) return 0; else { uint256 xx = x; uint256 r = 1; if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; } if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; } if (xx >= 0x100000000) { xx >>= 32; r <<= 16; } if (xx >= 0x10000) { xx >>= 16; r <<= 8; } if (xx >= 0x100) { xx >>= 8; r <<= 4; } if (xx >= 0x10) { xx >>= 4; r <<= 2; } if (xx >= 0x8) { r <<= 1; } r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; // Seven iterations should be enough uint256 r1 = x / r; return uint128 (r < r1 ? r : r1); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; /// @title Contains 512-bit math functions /// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision /// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits library FullMath { /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv function mulDiv( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = a * b // Compute the product mod 2**256 and mod 2**256 - 1 // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2**256 + prod0 uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod0 := mul(a, b) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { require(denominator > 0); assembly { result := div(prod0, denominator) } return result; } // Make sure the result is less than 2**256. // Also prevents denominator == 0 require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod uint256 remainder; assembly { remainder := mulmod(a, b, denominator) } // Subtract 256 bit number from 512 bit number assembly { prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator // Compute largest power of two divisor of denominator. // Always >= 1. uint256 twos = denominator & (~denominator + 1); // Divide denominator by power of two assembly { denominator := div(denominator, twos) } // Divide [prod1 prod0] by the factors of two assembly { prod0 := div(prod0, twos) } // Shift in bits from prod1 into prod0. For this we need // to flip `twos` such that it is 2**256 / twos. // If twos is zero, then it becomes one assembly { twos := add(div(sub(0, twos), twos), 1) } prod0 |= prod1 * twos; // Invert denominator mod 2**256 // Now that denominator is an odd number, it has an inverse // modulo 2**256 such that denominator * inv = 1 mod 2**256. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, denominator * inv = 1 mod 2**4 uint256 inv = (3 * denominator) ^ 2; // Now use Newton-Raphson iteration to improve the precision. // Thanks to Hensel's lifting lemma, this also works in modular // arithmetic, doubling the correct bits in each step. inv *= 2 - denominator * inv; // inverse mod 2**8 inv *= 2 - denominator * inv; // inverse mod 2**16 inv *= 2 - denominator * inv; // inverse mod 2**32 inv *= 2 - denominator * inv; // inverse mod 2**64 inv *= 2 - denominator * inv; // inverse mod 2**128 inv *= 2 - denominator * inv; // inverse mod 2**256 // Because the division is now exact we can divide by multiplying // with the modular inverse of denominator. This will give us the // correct result modulo 2**256. Since the precoditions guarantee // that the outcome is less than 2**256, this is the final result. // We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inv; return result; } /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result function mulDivRoundingUp( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { result = mulDiv(a, b, denominator); if (mulmod(a, b, denominator) > 0) { require(result < type(uint256).max); result++; } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.13; /// @title Prevents delegatecall to a contract /// @notice Base contract that provides a modifier for preventing delegatecall to methods in a child contract abstract contract NoDelegateCall { /// @dev The original address of this contract address private immutable original; constructor() { // Immutables are computed in the init code of the contract, and then inlined into the deployed bytecode. // In other words, this variable won't change when it's checked at runtime. original = address(this); } /// @dev Private method is used instead of inlining into modifier because modifiers are copied into each method, /// and the use of immutable means the address bytes are copied in every place the modifier is used. function checkNotDelegateCall() private view { require(address(this) == original); } /// @notice Prevents delegatecall into the modified method modifier noDelegateCall() { checkNotDelegateCall(); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; library UnsafeMath64x64 { /** * Calculate x * y rounding down. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function us_mul (int128 x, int128 y) internal pure returns (int128) { int256 result = int256(x) * y >> 64; return int128 (result); } /** * Calculate x / y rounding towards zero. Revert on overflow or when y is * zero. * * @param x signed 64.64-bit fixed point number * @param y signed 64.64-bit fixed point number * @return signed 64.64-bit fixed point number */ function us_div (int128 x, int128 y) internal pure returns (int128) { int256 result = (int256 (x) << 64) / y; return int128 (result); } }
{ "remappings": [ "@forge-std/=lib/forge-std/src/", "@openzeppelin/=lib/openzeppelin-contracts/", "ds-test/=lib/forge-std/lib/ds-test/src/", "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "bytecodeHash": "ipfs" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_factory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_quoteCurrency","type":"address"},{"internalType":"address","name":"_origin","type":"address"},{"internalType":"address","name":"_target","type":"address"},{"internalType":"uint256","name":"_originAmount","type":"uint256"},{"internalType":"uint256","name":"_minTargetAmount","type":"uint256"},{"internalType":"uint256","name":"_deadline","type":"uint256"}],"name":"originSwap","outputs":[{"internalType":"uint256","name":"targetAmount_","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_quoteCurrency","type":"address"},{"internalType":"address","name":"_origin","type":"address"},{"internalType":"address","name":"_target","type":"address"},{"internalType":"uint256","name":"_originAmount","type":"uint256"}],"name":"viewOriginSwap","outputs":[{"internalType":"uint256","name":"targetAmount_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_quoteCurrency","type":"address"},{"internalType":"address","name":"_origin","type":"address"},{"internalType":"address","name":"_target","type":"address"},{"internalType":"uint256","name":"_targetAmount","type":"uint256"}],"name":"viewTargetSwap","outputs":[{"internalType":"uint256","name":"originAmount_","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000009adeac3b6d29d9d5e543b8579e803a7cce72c9cd
-----Decoded View---------------
Arg [0] : _factory (address): 0x9AdEAc3b6d29D9D5e543B8579e803a7ccE72C9cd
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000009adeac3b6d29d9d5e543b8579e803a7cce72c9cd
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Multichain Portfolio | 26 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.