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Latest 25 from a total of 222 transactions
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Withdraw | 70538875 | 2 days ago | IN | 0 POL | 0.01324671 | ||||
Withdraw | 69891343 | 18 days ago | IN | 0 POL | 0.14253366 | ||||
Withdraw | 69871418 | 19 days ago | IN | 0 POL | 0.02576331 | ||||
Withdraw | 69563572 | 26 days ago | IN | 0 POL | 0.01379445 | ||||
Withdraw | 69434408 | 29 days ago | IN | 0 POL | 0.01232028 | ||||
Withdraw | 68794776 | 45 days ago | IN | 0 POL | 0.01266849 | ||||
Withdraw | 68581267 | 51 days ago | IN | 0 POL | 0.03240969 | ||||
Withdraw | 68560306 | 51 days ago | IN | 0 POL | 0.01974701 | ||||
Withdraw | 68349341 | 56 days ago | IN | 0 POL | 0.05272973 | ||||
Balance Of | 67877035 | 68 days ago | IN | 0 POL | 0.00104562 | ||||
Withdraw | 66073181 | 114 days ago | IN | 0 POL | 0.01498901 | ||||
Withdraw | 65843028 | 120 days ago | IN | 0 POL | 0.05220031 | ||||
Withdraw | 63467910 | 179 days ago | IN | 0 POL | 0.03857021 | ||||
Balance Of | 63117102 | 188 days ago | IN | 0 POL | 0.0007974 | ||||
Withdraw | 63104290 | 188 days ago | IN | 0 POL | 0.03551609 | ||||
Balance Of | 63013614 | 191 days ago | IN | 0 POL | 0.00074499 | ||||
Balance Of | 62928274 | 193 days ago | IN | 0 POL | 0.00100934 | ||||
Balance Of | 62928116 | 193 days ago | IN | 0 POL | 0.00100934 | ||||
Withdraw | 62824765 | 195 days ago | IN | 0 POL | 0.03159527 | ||||
Balance Of | 62812008 | 196 days ago | IN | 0 POL | 0.00077142 | ||||
Balance Of | 62802738 | 196 days ago | IN | 0 POL | 0.0007588 | ||||
Balance Of | 62543440 | 202 days ago | IN | 0 POL | 0.00081386 | ||||
Balance Of | 62543410 | 202 days ago | IN | 0 POL | 0.00079305 | ||||
Balance Of | 62511653 | 203 days ago | IN | 0 POL | 0.00079305 | ||||
Withdraw | 62458493 | 204 days ago | IN | 0 POL | 0.0134475 |
Latest 1 internal transaction
Parent Transaction Hash | Block | From | To | |||
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49905063 | 526 days ago | Contract Creation | 0 POL |
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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0x74B70676...96E076229 The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
ICHIVault
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import {SafeMath} from "@openzeppelin/contracts/math/SafeMath.sol"; import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {UV3Math} from "./lib/UV3Math.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import {IAlgebraMintCallback} from "@cryptoalgebra/v1-core/contracts/interfaces/callback/IAlgebraMintCallback.sol"; import {IAlgebraSwapCallback} from "@cryptoalgebra/v1-core/contracts/interfaces/callback/IAlgebraSwapCallback.sol"; import {IAlgebraPool} from "@cryptoalgebra/v1-core/contracts/interfaces/IAlgebraPool.sol"; import {IDataStorageOperator} from "@cryptoalgebra/v1-core/contracts/interfaces/IDataStorageOperator.sol"; import {IICHIVault} from "../interfaces/IICHIVault.sol"; import {IICHIVaultFactory} from "../interfaces/IICHIVaultFactory.sol"; /** @notice A Uniswap V2-like interface with fungible liquidity to Uniswap V3 which allows for either one-sided or two-sided liquidity provision. ICHIVaults should be deployed by the ICHIVaultFactory. ICHIVaults should not be used with tokens that charge transaction fees. */ contract ICHIVault is IICHIVault, IAlgebraMintCallback, IAlgebraSwapCallback, ERC20, ReentrancyGuard, Ownable { using SafeERC20 for IERC20; using SafeMath for uint256; address public immutable override ichiVaultFactory; address public immutable override pool; address public immutable override token0; address public immutable override token1; bool public immutable override allowToken0; bool public immutable override allowToken1; int24 public immutable override tickSpacing; address public override affiliate; int24 public override baseLower; int24 public override baseUpper; int24 public override limitLower; int24 public override limitUpper; // The following three variables serve the very important purpose of // limiting inventory risk and the arbitrage opportunities made possible by // instant deposit & withdrawal. // If, in the ETHUSDT pool at an ETH price of 2500 USDT, I deposit 100k // USDT in a pool with 40 WETH, and then directly afterwards withdraw 50k // USDT and 20 WETH (this is of equivalent dollar value), I drastically // change the pool composition and additionally decreases deployed capital // by 50%. Keeping a maxTotalSupply just above our current total supply // means that large amounts of funds can't be deposited all at once to // create a large imbalance of funds or to sideline many funds. // Additionally, deposit maximums prevent users from using the pool as // a counterparty to trade assets against while avoiding uniswap fees // & slippage--if someone were to try to do this with a large amount of // capital they would be overwhelmed by the gas fees necessary to call // deposit & withdrawal many times. uint256 public override deposit0Max; uint256 public override deposit1Max; uint256 public override maxTotalSupply; uint256 public override hysteresis; uint256 public constant PRECISION = 10**18; uint256 constant PERCENT = 100; address constant NULL_ADDRESS = address(0); uint32 public twapPeriod; /** @notice creates an instance of ICHIVault based on the pool. allowToken parameters control whether the ICHIVault allows one-sided or two-sided liquidity provision @param _pool Uniswap V3 pool for which liquidity is managed @param _allowToken0 flag that indicates whether token0 is accepted during deposit @param _allowToken1 flag that indicates whether token1 is accepted during deposit @param __owner Owner of the ICHIVault @param _twapPeriod TWAP period used for hysteresis check @param _vaultIndex index of the vault in the factory */ constructor( address _pool, bool _allowToken0, bool _allowToken1, address __owner, uint32 _twapPeriod, uint256 _vaultIndex ) ERC20("ICHI Vault Liquidity", UV3Math.computeIVsymbol(_vaultIndex)) { require(_pool != NULL_ADDRESS, "IV.constructor: zero address"); require(_allowToken0 || _allowToken1, 'IV.constructor: no allowed tokens'); ichiVaultFactory = msg.sender; pool = _pool; token0 = IAlgebraPool(_pool).token0(); token1 = IAlgebraPool(_pool).token1(); allowToken0 = _allowToken0; allowToken1 = _allowToken1; twapPeriod = _twapPeriod; tickSpacing = IAlgebraPool(_pool).tickSpacing(); transferOwnership(__owner); maxTotalSupply = 0; // no cap hysteresis = PRECISION.div(PERCENT); // 1% threshold deposit0Max = uint256(-1); // max uint256 deposit1Max = uint256(-1); // max uint256 affiliate = NULL_ADDRESS; // by default there is no affiliate address emit DeployICHIVault( msg.sender, _pool, _allowToken0, _allowToken1, __owner, _twapPeriod ); } function setTwapPeriod(uint32 newTwapPeriod) external onlyOwner { require(newTwapPeriod > 0, "IV.setTwapPeriod: missing period"); twapPeriod = newTwapPeriod; emit SetTwapPeriod(msg.sender, newTwapPeriod); } /** @notice Distributes shares to depositor equal to the token1 value of his deposit multiplied by the ratio of total liquidity shares issued divided by the pool's AUM measured in token1 value. @param deposit0 Amount of token0 transfered from sender to ICHIVault @param deposit1 Amount of token0 transfered from sender to ICHIVault @param to Address to which liquidity tokens are minted @return shares Quantity of liquidity tokens minted as a result of deposit */ function deposit( uint256 deposit0, uint256 deposit1, address to ) external override nonReentrant returns (uint256 shares) { require(allowToken0 || deposit0 == 0, "IV.deposit: token0 not allowed"); require(allowToken1 || deposit1 == 0, "IV.deposit: token1 not allowed"); require( deposit0 > 0 || deposit1 > 0, "IV.deposit: deposits must be > 0" ); require( deposit0 < deposit0Max && deposit1 < deposit1Max, "IV.deposit: deposits too large" ); require(to != NULL_ADDRESS && to != address(this), "IV.deposit: to"); // update fees for inclusion in total pool amounts (uint128 baseLiquidity, , ) = _position(baseLower, baseUpper); if (baseLiquidity > 0) { (uint burn0, uint burn1) = IAlgebraPool(pool).burn(baseLower, baseUpper, 0); require(burn0 == 0 && burn1 == 0, "IV.deposit: unexpected burn (1)"); } (uint128 limitLiquidity, , ) = _position(limitLower, limitUpper); if (limitLiquidity > 0) { (uint burn0, uint burn1) = IAlgebraPool(pool).burn(limitLower, limitUpper, 0); require(burn0 == 0 && burn1 == 0, "IV.deposit: unexpected burn (2)"); } // Spot uint256 price = _fetchSpot( token0, token1, currentTick(), PRECISION ); // TWAP uint256 twap = _fetchTwap( pool, token0, token1, twapPeriod, PRECISION); // if difference between spot and twap is too big, check if the price may have been manipulated in this block uint256 delta = (price > twap) ? price.sub(twap).mul(PRECISION).div(price) : twap.sub(price).mul(PRECISION).div(twap); if (delta > hysteresis) require(checkHysteresis(), "IV.deposit: try later"); (uint256 pool0, uint256 pool1) = getTotalAmounts(); // aggregated deposit uint256 deposit0PricedInToken1 = deposit0.mul((price < twap) ? price : twap).div(PRECISION); if (deposit0 > 0) { IERC20(token0).safeTransferFrom( msg.sender, address(this), deposit0 ); } if (deposit1 > 0) { IERC20(token1).safeTransferFrom( msg.sender, address(this), deposit1 ); } shares = deposit1.add(deposit0PricedInToken1); if (totalSupply() != 0) { uint256 pool0PricedInToken1 = pool0.mul((price > twap) ? price : twap).div(PRECISION); shares = shares.mul(totalSupply()).div( pool0PricedInToken1.add(pool1) ); } _mint(to, shares); emit Deposit(msg.sender, to, shares, deposit0, deposit1); // Check total supply cap not exceeded. A value of 0 means no limit. require( maxTotalSupply == 0 || totalSupply() <= maxTotalSupply, "IV.deposit: maxTotalSupply" ); } /** @notice Redeems shares by sending out a percentage of the ICHIVault's AUM - this percentage is equal to the percentage of total issued shares represented by the redeeemed shares. @param shares Number of liquidity tokens to redeem as pool assets @param to Address to which redeemed pool assets are sent @return amount0 Amount of token0 redeemed by the submitted liquidity tokens @return amount1 Amount of token1 redeemed by the submitted liquidity tokens */ function withdraw(uint256 shares, address to) external override nonReentrant returns (uint256 amount0, uint256 amount1) { require(shares > 0, "IV.withdraw: shares"); require(to != NULL_ADDRESS, "IV.withdraw: to"); // Withdraw liquidity from Uniswap pool (uint256 base0, uint256 base1) = _burnLiquidity( baseLower, baseUpper, _liquidityForShares(baseLower, baseUpper, shares), to, false ); (uint256 limit0, uint256 limit1) = _burnLiquidity( limitLower, limitUpper, _liquidityForShares(limitLower, limitUpper, shares), to, false ); // Push tokens proportional to unused balances uint256 _totalSupply = totalSupply(); uint256 unusedAmount0 = IERC20(token0) .balanceOf(address(this)) .mul(shares) .div(_totalSupply); uint256 unusedAmount1 = IERC20(token1) .balanceOf(address(this)) .mul(shares) .div(_totalSupply); if (unusedAmount0 > 0) IERC20(token0).safeTransfer(to, unusedAmount0); if (unusedAmount1 > 0) IERC20(token1).safeTransfer(to, unusedAmount1); amount0 = base0.add(limit0).add(unusedAmount0); amount1 = base1.add(limit1).add(unusedAmount1); _burn(msg.sender, shares); emit Withdraw(msg.sender, to, shares, amount0, amount1); } /** @notice Updates ICHIVault's LP positions. @dev The base position is placed first with as much liquidity as possible and is typically symmetric around the current price. This order should use up all of one token, leaving some unused quantity of the other. This unused amount is then placed as a single-sided order. @param _baseLower The lower tick of the base position @param _baseUpper The upper tick of the base position @param _limitLower The lower tick of the limit position @param _limitUpper The upper tick of the limit position @param swapQuantity Quantity of tokens to swap; if quantity is positive, `swapQuantity` token0 are swaped for token1, if negative, `swapQuantity` token1 is swaped for token0 */ function rebalance( int24 _baseLower, int24 _baseUpper, int24 _limitLower, int24 _limitUpper, int256 swapQuantity ) external override nonReentrant onlyOwner { require( _baseLower < _baseUpper && _baseLower % tickSpacing == 0 && _baseUpper % tickSpacing == 0, "IV.rebalance: base position invalid" ); require( _limitLower < _limitUpper && _limitLower % tickSpacing == 0 && _limitUpper % tickSpacing == 0, "IV.rebalance: limit position invalid" ); require(_baseLower != _limitLower || _baseUpper != _limitUpper, "IV.rebalance: identical positions"); // update fees (uint128 baseLiquidity, , ) = _position(baseLower, baseUpper); if (baseLiquidity > 0) { IAlgebraPool(pool).burn(baseLower, baseUpper, 0); } (uint128 limitLiquidity, , ) = _position(limitLower, limitUpper); if (limitLiquidity > 0) { IAlgebraPool(pool).burn(limitLower, limitUpper, 0); } // Withdraw all liquidity and collect all fees from Uniswap pool (, uint256 feesBase0, uint256 feesBase1) = _position( baseLower, baseUpper ); (, uint256 feesLimit0, uint256 feesLimit1) = _position( limitLower, limitUpper ); uint256 fees0 = feesBase0.add(feesLimit0); uint256 fees1 = feesBase1.add(feesLimit1); _burnLiquidity( baseLower, baseUpper, baseLiquidity, address(this), true ); _burnLiquidity( limitLower, limitUpper, limitLiquidity, address(this), true ); _distributeFees(fees0, fees1); emit Rebalance( currentTick(), IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), fees0, fees1, totalSupply() ); // swap tokens if required if (swapQuantity != 0) { IAlgebraPool(pool).swap( address(this), swapQuantity > 0, swapQuantity > 0 ? swapQuantity : -swapQuantity, swapQuantity > 0 ? UV3Math.MIN_SQRT_RATIO + 1 : UV3Math.MAX_SQRT_RATIO - 1, abi.encode(address(this)) ); } baseLower = _baseLower; baseUpper = _baseUpper; baseLiquidity = _liquidityForAmounts( baseLower, baseUpper, IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)) ); _mintLiquidity(baseLower, baseUpper, baseLiquidity); limitLower = _limitLower; limitUpper = _limitUpper; limitLiquidity = _liquidityForAmounts( limitLower, limitUpper, IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)) ); _mintLiquidity(limitLower, limitUpper, limitLiquidity); } /** @notice Collects and distributes fees accumulated in the ICHIVault's LP positions. Everybody is allowed to pay for this transaction. @return fees0 collected token0 fees @return fees1 collected token1 fees */ function collectFees() external override nonReentrant returns(uint256 fees0, uint256 fees1) { (uint128 baseLiquidity, , ) = _position(baseLower, baseUpper); if (baseLiquidity > 0) { (uint256 fee0, uint256 fee1) = _burnAnyLiquidity( baseLower, baseUpper, 0, // no liquidity is burned, only fees are colleted address(this), true ); fees0 = fees0.add(fee0); fees1 = fees1.add(fee1); } (uint128 limitLiquidity, , ) = _position(limitLower, limitUpper); if (limitLiquidity > 0) { (uint256 fee0, uint256 fee1) = _burnAnyLiquidity( limitLower, limitUpper, 0, // no liquidity is burned, only fees are colleted address(this), true ); fees0 = fees0.add(fee0); fees1 = fees1.add(fee1); } emit CollectFees( msg.sender, fees0, fees1 ); if (fees0 > 0 || fees1 > 0) { _distributeFees(fees0, fees1); } } /** @notice Sends portion of swap fees to ammFeeRecepient, feeRecipient and affiliate. @param fees0 fees for token0 @param fees1 fees for token1 */ function _distributeFees(uint256 fees0, uint256 fees1) internal { uint256 ammFee = IICHIVaultFactory(ichiVaultFactory).ammFee(); uint256 baseFee = IICHIVaultFactory(ichiVaultFactory).baseFee(); // baseFeeRecipient and ammFeeRecipient cannot be NULL. This is checked and controlled in the factory // ammFee + baseFee is always <= 100%. Also controlled in the factory if (ammFee > 0) { address ammFeeRecipient = IICHIVaultFactory(ichiVaultFactory).ammFeeRecipient(); if (fees0 > 0) { IERC20(token0).safeTransfer(ammFeeRecipient, fees0.mul(ammFee).div(PRECISION)); } if (fees1 > 0) { IERC20(token1).safeTransfer(ammFeeRecipient, fees1.mul(ammFee).div(PRECISION)); } } if (baseFee > 0) { // if there is no affiliate 100% of the baseFee should go to feeRecipient uint256 baseFeeSplit = (affiliate == NULL_ADDRESS) ? PRECISION : IICHIVaultFactory(ichiVaultFactory).baseFeeSplit(); address feeRecipient = IICHIVaultFactory(ichiVaultFactory).feeRecipient(); if (fees0 > 0) { uint256 totalFee = fees0.mul(baseFee).div(PRECISION); uint256 toRecipient = totalFee.mul(baseFeeSplit).div(PRECISION); uint256 toAffiliate = totalFee.sub(toRecipient); IERC20(token0).safeTransfer(feeRecipient, toRecipient); if (toAffiliate > 0) { IERC20(token0).safeTransfer(affiliate, toAffiliate); } } if (fees1 > 0) { uint256 totalFee = fees1.mul(baseFee).div(PRECISION); uint256 toRecipient = totalFee.mul(baseFeeSplit).div(PRECISION); uint256 toAffiliate = totalFee.sub(toRecipient); IERC20(token1).safeTransfer(feeRecipient, toRecipient); if (toAffiliate > 0) { IERC20(token1).safeTransfer(affiliate, toAffiliate); } } } } /** @notice Mint liquidity in Uniswap V3 pool. @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param liquidity Amount of liquidity to mint @return amount0 Used amount of token0 @return amount1 Used amount of token1 */ function _mintLiquidity( int24 tickLower, int24 tickUpper, uint128 liquidity ) internal returns (uint256 amount0, uint256 amount1) { if (liquidity > 0) { (amount0, amount1, ) = IAlgebraPool(pool).mint( address(this), address(this), tickLower, tickUpper, liquidity, abi.encode(address(this)) ); } } /** @notice Burn liquidity in Uniswap V3 pool. @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param liquidity amount of liquidity to burn. Must be greater than zero, otherwise nothing happens @param to The account to receive token0 and token1 amounts @param collectAll Flag that indicates whether all token0 and token1 tokens should be collected or only the ones released during this burn @return amount0 released amount of token0 @return amount1 released amount of token1 */ function _burnLiquidity( int24 tickLower, int24 tickUpper, uint128 liquidity, address to, bool collectAll ) internal returns (uint256 amount0, uint256 amount1) { if (liquidity > 0) { return _burnAnyLiquidity(tickLower, tickUpper, liquidity, to, collectAll); } } /** @notice Burn liquidity in Uniswap V3 pool. If liquidity equals to zero, only collect fees @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param liquidity amount of liquidity to burn. Could be zero @param to The account to receive token0 and token1 amounts @param collectAll Flag that indicates whether all token0 and token1 tokens should be collected or only the ones released during this burn @return amount0 released amount of token0 @return amount1 released amount of token1 */ function _burnAnyLiquidity( int24 tickLower, int24 tickUpper, uint128 liquidity, address to, bool collectAll ) internal returns (uint256 amount0, uint256 amount1) { // Burn liquidity (uint256 owed0, uint256 owed1) = IAlgebraPool(pool).burn( tickLower, tickUpper, liquidity ); // Collect amount owed uint128 collect0 = collectAll ? type(uint128).max : _uint128Safe(owed0); uint128 collect1 = collectAll ? type(uint128).max : _uint128Safe(owed1); if (collect0 > 0 || collect1 > 0) { (amount0, amount1) = IAlgebraPool(pool).collect( to, tickLower, tickUpper, collect0, collect1 ); } } /** @notice Calculates liquidity amount for the given shares. @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param shares number of shares */ function _liquidityForShares( int24 tickLower, int24 tickUpper, uint256 shares ) internal view returns (uint128) { (uint128 position, , ) = _position(tickLower, tickUpper); return _uint128Safe(uint256(position).mul(shares).div(totalSupply())); } /** @notice Returns information about the liquidity position. @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @return liquidity liquidity amount @return tokensOwed0 amount of token0 owed to the owner of the position @return tokensOwed1 amount of token1 owed to the owner of the position */ function _position(int24 tickLower, int24 tickUpper) internal view returns ( uint128 liquidity, uint128 tokensOwed0, uint128 tokensOwed1 ) { bytes32 positionKey; address owner = address(this); assembly { positionKey := or(shl(24, or(shl(24, owner), and(tickLower, 0xFFFFFF))), and(tickUpper, 0xFFFFFF)) } (liquidity, , , , tokensOwed0, tokensOwed1) = IAlgebraPool(pool) .positions(positionKey); } /** @notice Callback function for mint @dev this is where the payer transfers required token0 and token1 amounts @param amount0 required amount of token0 @param amount1 required amount of token1 @param data encoded payer's address */ function algebraMintCallback( uint256 amount0, uint256 amount1, bytes calldata data ) external override { require(msg.sender == address(pool), "cb1"); address payer = abi.decode(data, (address)); if (payer == address(this)) { if (amount0 > 0) IERC20(token0).safeTransfer(msg.sender, amount0); if (amount1 > 0) IERC20(token1).safeTransfer(msg.sender, amount1); } else { if (amount0 > 0) IERC20(token0).safeTransferFrom(payer, msg.sender, amount0); if (amount1 > 0) IERC20(token1).safeTransferFrom(payer, msg.sender, amount1); } } /** @notice Callback function for swap @dev this is where the payer transfers required token0 and token1 amounts @param amount0Delta required amount of token0 @param amount1Delta required amount of token1 @param data encoded payer's address */ function algebraSwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external override { require(msg.sender == address(pool), "cb2"); address payer = abi.decode(data, (address)); if (amount0Delta > 0) { if (payer == address(this)) { IERC20(token0).safeTransfer(msg.sender, uint256(amount0Delta)); } else { IERC20(token0).safeTransferFrom( payer, msg.sender, uint256(amount0Delta) ); } } else if (amount1Delta > 0) { if (payer == address(this)) { IERC20(token1).safeTransfer(msg.sender, uint256(amount1Delta)); } else { IERC20(token1).safeTransferFrom( payer, msg.sender, uint256(amount1Delta) ); } } } /** @notice Checks if the last price change happened in the current block */ function checkHysteresis() private view returns(bool) { (, , , uint16 timepointIndex, , , ) = IAlgebraPool(pool).globalState(); address dataStorageOperator = IAlgebraPool(pool).dataStorageOperator(); (, uint32 blockTimestamp, , , , ,) = IDataStorageOperator(dataStorageOperator).timepoints(timepointIndex); return( block.timestamp != blockTimestamp ); } /** @notice Returns the current fee in the pool @return fee_ current fee in the pool */ function fee() external override view returns(uint24 fee_) { (, , fee_, , , , ) = IAlgebraPool(pool).globalState(); } /** @notice Sets the maximum liquidity token supply the contract allows @dev onlyOwner @param _maxTotalSupply The maximum liquidity token supply the contract allows */ function setMaxTotalSupply(uint256 _maxTotalSupply) external onlyOwner { maxTotalSupply = _maxTotalSupply; emit MaxTotalSupply(msg.sender, _maxTotalSupply); } /** @notice Sets the hysteresis threshold (in percentage points, 10**16 = 1%). When difference between spot price and TWAP exceeds the threshold, a check for a flashloan attack is executed @dev onlyOwner @param _hysteresis hysteresis threshold */ function setHysteresis(uint256 _hysteresis) external onlyOwner { hysteresis = _hysteresis; emit Hysteresis(msg.sender, _hysteresis); } /** @notice Sets the affiliate account address where portion of the collected swap fees will be distributed @dev onlyOwner @param _affiliate The affiliate account address */ function setAffiliate(address _affiliate) external override onlyOwner { affiliate = _affiliate; emit Affiliate(msg.sender, _affiliate); } /** @notice Sets the maximum token0 and token1 amounts the contract allows in a deposit @dev onlyOwner @param _deposit0Max The maximum amount of token0 allowed in a deposit @param _deposit1Max The maximum amount of token1 allowed in a deposit */ function setDepositMax(uint256 _deposit0Max, uint256 _deposit1Max) external override onlyOwner { deposit0Max = _deposit0Max; deposit1Max = _deposit1Max; emit DepositMax(msg.sender, _deposit0Max, _deposit1Max); } /** @notice Calculates token0 and token1 amounts for liquidity in a position @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param liquidity Amount of liquidity in the position */ function _amountsForLiquidity( int24 tickLower, int24 tickUpper, uint128 liquidity ) internal view returns (uint256, uint256) { (uint160 sqrtRatioX96, , , , , , ) = IAlgebraPool(pool).globalState(); return UV3Math.getAmountsForLiquidity( sqrtRatioX96, UV3Math.getSqrtRatioAtTick(tickLower), UV3Math.getSqrtRatioAtTick(tickUpper), liquidity ); } /** @notice Calculates amount of liquidity in a position for given token0 and token1 amounts @param tickLower The lower tick of the liquidity position @param tickUpper The upper tick of the liquidity position @param amount0 token0 amount @param amount1 token1 amount */ function _liquidityForAmounts( int24 tickLower, int24 tickUpper, uint256 amount0, uint256 amount1 ) internal view returns (uint128) { (uint160 sqrtRatioX96, , , , , , ) = IAlgebraPool(pool).globalState(); return UV3Math.getLiquidityForAmounts( sqrtRatioX96, UV3Math.getSqrtRatioAtTick(tickLower), UV3Math.getSqrtRatioAtTick(tickUpper), amount0, amount1 ); } /** @notice uint128Safe function @param x input value */ function _uint128Safe(uint256 x) internal pure returns (uint128) { require(x <= type(uint128).max, "IV.128_OF"); return uint128(x); } /** @notice Calculates total quantity of token0 and token1 in both positions (and unused in the ICHIVault) @return total0 Quantity of token0 in both positions (and unused in the ICHIVault) @return total1 Quantity of token1 in both positions (and unused in the ICHIVault) */ function getTotalAmounts() public view override returns (uint256 total0, uint256 total1) { (, uint256 base0, uint256 base1) = getBasePosition(); (, uint256 limit0, uint256 limit1) = getLimitPosition(); total0 = IERC20(token0).balanceOf(address(this)).add(base0).add(limit0); total1 = IERC20(token1).balanceOf(address(this)).add(base1).add(limit1); } /** @notice Calculates amount of total liquidity in the base position @return liquidity Amount of total liquidity in the base position @return amount0 Estimated amount of token0 that could be collected by burning the base position @return amount1 Estimated amount of token1 that could be collected by burning the base position */ function getBasePosition() public view returns ( uint128 liquidity, uint256 amount0, uint256 amount1 ) { ( uint128 positionLiquidity, uint128 tokensOwed0, uint128 tokensOwed1 ) = _position(baseLower, baseUpper); (amount0, amount1) = _amountsForLiquidity( baseLower, baseUpper, positionLiquidity ); liquidity = positionLiquidity; amount0 = amount0.add(uint256(tokensOwed0)); amount1 = amount1.add(uint256(tokensOwed1)); } /** @notice Calculates amount of total liquidity in the limit position @return liquidity Amount of total liquidity in the base position @return amount0 Estimated amount of token0 that could be collected by burning the limit position @return amount1 Estimated amount of token1 that could be collected by burning the limit position */ function getLimitPosition() public view returns ( uint128 liquidity, uint256 amount0, uint256 amount1 ) { ( uint128 positionLiquidity, uint128 tokensOwed0, uint128 tokensOwed1 ) = _position(limitLower, limitUpper); (amount0, amount1) = _amountsForLiquidity( limitLower, limitUpper, positionLiquidity ); liquidity = positionLiquidity; amount0 = amount0.add(uint256(tokensOwed0)); amount1 = amount1.add(uint256(tokensOwed1)); } /** @notice Returns current price tick @return tick Uniswap pool's current price tick */ function currentTick() public view returns (int24 tick) { (, int24 tick_, , , , , bool unlocked_) = IAlgebraPool(pool).globalState(); require(unlocked_, "IV.currentTick: the pool is locked"); tick = tick_; } /** @notice returns equivalent _tokenOut for _amountIn, _tokenIn using spot price @param _tokenIn token the input amount is in @param _tokenOut token for the output amount @param _tick tick for the spot price @param _amountIn amount in _tokenIn @return amountOut equivalent anount in _tokenOut */ function _fetchSpot( address _tokenIn, address _tokenOut, int24 _tick, uint256 _amountIn ) internal pure returns (uint256 amountOut) { return UV3Math.getQuoteAtTick( _tick, UV3Math.toUint128(_amountIn), _tokenIn, _tokenOut ); } /** @notice returns equivalent _tokenOut for _amountIn, _tokenIn using TWAP price @param _pool Uniswap V3 pool address to be used for price checking @param _tokenIn token the input amount is in @param _tokenOut token for the output amount @param _twapPeriod the averaging time period @param _amountIn amount in _tokenIn @return amountOut equivalent anount in _tokenOut */ function _fetchTwap( address _pool, address _tokenIn, address _tokenOut, uint32 _twapPeriod, uint256 _amountIn ) internal view returns (uint256 amountOut) { // Leave twapTick as a int256 to avoid solidity casting int256 twapTick = UV3Math.consult(_pool, _twapPeriod); return UV3Math.getQuoteAtTick( int24(twapTick), // can assume safe being result from consult() UV3Math.toUint128(_amountIn), _tokenIn, _tokenOut ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of 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 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * 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 returns (uint8) { return _decimals; } /** * @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: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, 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}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), 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(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds 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(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(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) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is 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: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, 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: * * - `to` 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 = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(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); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(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 Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @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 to 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 { } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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 `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool); /** * @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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.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 SafeMath for uint256; 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' // solhint-disable-next-line max-line-length 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).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @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 // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; 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 () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import {TickMath} from "@cryptoalgebra/v1-core/contracts/libraries/TickMath.sol"; import {LiquidityAmounts} from "@cryptoalgebra/v1-periphery/contracts/libraries/LiquidityAmounts.sol"; import {DataStorageLibrary} from "@cryptoalgebra/v1-periphery/contracts/libraries/DataStorageLibrary.sol"; import {Strings} from "@openzeppelin/contracts/utils/Strings.sol"; library UV3Math { /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK) uint160 internal constant MIN_SQRT_RATIO = 4295128739; /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK) uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342; /******************* * Tick Math *******************/ function getSqrtRatioAtTick( int24 currentTick ) public pure returns(uint160 sqrtPriceX96) { sqrtPriceX96 = TickMath.getSqrtRatioAtTick(currentTick); } /******************* * LiquidityAmounts *******************/ function getAmountsForLiquidity( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) public pure returns (uint256 amount0, uint256 amount1) { (amount0, amount1) = LiquidityAmounts.getAmountsForLiquidity( sqrtRatioX96, sqrtRatioAX96, sqrtRatioBX96, liquidity); } function getLiquidityForAmounts( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0, uint256 amount1 ) public pure returns (uint128 liquidity) { liquidity = LiquidityAmounts.getLiquidityForAmounts( sqrtRatioX96, sqrtRatioAX96, sqrtRatioBX96, amount0, amount1); } /******************* * OracleLibrary *******************/ function consult( address _pool, uint32 _twapPeriod ) public view returns(int24 timeWeightedAverageTick) { timeWeightedAverageTick = DataStorageLibrary.consult(_pool, _twapPeriod); } function getQuoteAtTick( int24 tick, uint128 baseAmount, address baseToken, address quoteToken ) public pure returns (uint256 quoteAmount) { quoteAmount = DataStorageLibrary.getQuoteAtTick(tick, baseAmount, baseToken, quoteToken); } /******************* * SafeUnit128 *******************/ /// @notice Cast a uint256 to a uint128, revert on overflow /// @param y The uint256 to be downcasted /// @return z The downcasted integer, now type uint128 function toUint128(uint256 y) public pure returns (uint128 z) { require((z = uint128(y)) == y, "SafeUint128: overflow"); } /****************************** * ICHIVault specific functions ******************************/ /** @dev Computes a unique vault's symbol for vaults created through Ramses factory. @param value index of the vault to be created */ function computeIVsymbol(uint256 value) public pure returns (string memory) { return string(abi.encodePacked("IV-", Strings.toString(value), "-QS")); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @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 make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Callback for IAlgebraPoolActions#mint /// @notice Any contract that calls IAlgebraPoolActions#mint must implement this interface /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraMintCallback { /// @notice Called to `msg.sender` after minting liquidity to a position from IAlgebraPool#mint. /// @dev In the implementation you must pay the pool tokens owed for the minted liquidity. /// The caller of this method must be checked to be a AlgebraPool deployed by the canonical AlgebraFactory. /// @param amount0Owed The amount of token0 due to the pool for the minted liquidity /// @param amount1Owed The amount of token1 due to the pool for the minted liquidity /// @param data Any data passed through by the caller via the IAlgebraPoolActions#mint call function algebraMintCallback( uint256 amount0Owed, uint256 amount1Owed, bytes calldata data ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Callback for IAlgebraPoolActions#swap /// @notice Any contract that calls IAlgebraPoolActions#swap must implement this interface /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraSwapCallback { /// @notice Called to `msg.sender` after executing a swap via IAlgebraPool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a AlgebraPool deployed by the canonical AlgebraFactory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IAlgebraPoolActions#swap call function algebraSwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import './pool/IAlgebraPoolImmutables.sol'; import './pool/IAlgebraPoolState.sol'; import './pool/IAlgebraPoolDerivedState.sol'; import './pool/IAlgebraPoolActions.sol'; import './pool/IAlgebraPoolPermissionedActions.sol'; import './pool/IAlgebraPoolEvents.sol'; /** * @title The interface for a Algebra Pool * @dev The pool interface is broken up into many smaller pieces. * Credit to Uniswap Labs under GPL-2.0-or-later license: * https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces */ interface IAlgebraPool is IAlgebraPoolImmutables, IAlgebraPoolState, IAlgebraPoolDerivedState, IAlgebraPoolActions, IAlgebraPoolPermissionedActions, IAlgebraPoolEvents { // used only for combining interfaces }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; pragma abicoder v2; import '../libraries/AdaptiveFee.sol'; interface IDataStorageOperator { event FeeConfiguration(AdaptiveFee.Configuration feeConfig); /** * @notice Returns data belonging to a certain timepoint * @param index The index of timepoint in the array * @dev There is more convenient function to fetch a timepoint: observe(). Which requires not an index but seconds * @return initialized Whether the timepoint has been initialized and the values are safe to use, * blockTimestamp The timestamp of the observation, * tickCumulative The tick multiplied by seconds elapsed for the life of the pool as of the timepoint timestamp, * secondsPerLiquidityCumulative The seconds per in range liquidity for the life of the pool as of the timepoint timestamp, * volatilityCumulative Cumulative standard deviation for the life of the pool as of the timepoint timestamp, * averageTick Time-weighted average tick, * volumePerLiquidityCumulative Cumulative swap volume per liquidity for the life of the pool as of the timepoint timestamp */ function timepoints(uint256 index) external view returns ( bool initialized, uint32 blockTimestamp, int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint88 volatilityCumulative, int24 averageTick, uint144 volumePerLiquidityCumulative ); /// @notice Initialize the dataStorage array by writing the first slot. Called once for the lifecycle of the timepoints array /// @param time The time of the dataStorage initialization, via block.timestamp truncated to uint32 /// @param tick Initial tick function initialize(uint32 time, int24 tick) external; /// @dev Reverts if an timepoint at or before the desired timepoint timestamp does not exist. /// 0 may be passed as `secondsAgo' to return the current cumulative values. /// If called with a timestamp falling between two timepoints, returns the counterfactual accumulator values /// at exactly the timestamp between the two timepoints. /// @param time The current block timestamp /// @param secondsAgo The amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return tickCumulative The cumulative tick since the pool was first initialized, as of `secondsAgo` /// @return secondsPerLiquidityCumulative The cumulative seconds / max(1, liquidity) since the pool was first initialized, as of `secondsAgo` /// @return volatilityCumulative The cumulative volatility value since the pool was first initialized, as of `secondsAgo` /// @return volumePerAvgLiquidity The cumulative volume per liquidity value since the pool was first initialized, as of `secondsAgo` function getSingleTimepoint( uint32 time, uint32 secondsAgo, int24 tick, uint16 index, uint128 liquidity ) external view returns ( int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint112 volatilityCumulative, uint256 volumePerAvgLiquidity ); /// @notice Returns the accumulator values as of each time seconds ago from the given time in the array of `secondsAgos` /// @dev Reverts if `secondsAgos` > oldest timepoint /// @param time The current block.timestamp /// @param secondsAgos Each amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return tickCumulatives The cumulative tick since the pool was first initialized, as of each `secondsAgo` /// @return secondsPerLiquidityCumulatives The cumulative seconds / max(1, liquidity) since the pool was first initialized, as of each `secondsAgo` /// @return volatilityCumulatives The cumulative volatility values since the pool was first initialized, as of each `secondsAgo` /// @return volumePerAvgLiquiditys The cumulative volume per liquidity values since the pool was first initialized, as of each `secondsAgo` function getTimepoints( uint32 time, uint32[] memory secondsAgos, int24 tick, uint16 index, uint128 liquidity ) external view returns ( int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulatives, uint112[] memory volatilityCumulatives, uint256[] memory volumePerAvgLiquiditys ); /// @notice Returns average volatility in the range from time-WINDOW to time /// @param time The current block.timestamp /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return TWVolatilityAverage The average volatility in the recent range /// @return TWVolumePerLiqAverage The average volume per liquidity in the recent range function getAverages( uint32 time, int24 tick, uint16 index, uint128 liquidity ) external view returns (uint112 TWVolatilityAverage, uint256 TWVolumePerLiqAverage); /// @notice Writes an dataStorage timepoint to the array /// @dev Writable at most once per block. Index represents the most recently written element. index must be tracked externally. /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param blockTimestamp The timestamp of the new timepoint /// @param tick The active tick at the time of the new timepoint /// @param liquidity The total in-range liquidity at the time of the new timepoint /// @param volumePerLiquidity The gmean(volumes)/liquidity at the time of the new timepoint /// @return indexUpdated The new index of the most recently written element in the dataStorage array function write( uint16 index, uint32 blockTimestamp, int24 tick, uint128 liquidity, uint128 volumePerLiquidity ) external returns (uint16 indexUpdated); /// @notice Changes fee configuration for the pool function changeFeeConfiguration(AdaptiveFee.Configuration calldata feeConfig) external; /// @notice Calculates gmean(volume/liquidity) for block /// @param liquidity The current in-range pool liquidity /// @param amount0 Total amount of swapped token0 /// @param amount1 Total amount of swapped token1 /// @return volumePerLiquidity gmean(volume/liquidity) capped by 100000 << 64 function calculateVolumePerLiquidity( uint128 liquidity, int256 amount0, int256 amount1 ) external pure returns (uint128 volumePerLiquidity); /// @return windowLength Length of window used to calculate averages function window() external view returns (uint32 windowLength); /// @notice Calculates fee based on combination of sigmoids /// @param time The current block.timestamp /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return fee The fee in hundredths of a bip, i.e. 1e-6 function getFee( uint32 time, int24 tick, uint16 index, uint128 liquidity ) external view returns (uint16 fee); }
// SPDX-License-Identifier: Unlicense pragma solidity 0.7.6; interface IICHIVault{ function ichiVaultFactory() external view returns(address); function pool() external view returns(address); function token0() external view returns(address); function allowToken0() external view returns(bool); function token1() external view returns(address); function allowToken1() external view returns(bool); function fee() external view returns(uint24); function tickSpacing() external view returns(int24); function affiliate() external view returns(address); function baseLower() external view returns(int24); function baseUpper() external view returns(int24); function limitLower() external view returns(int24); function limitUpper() external view returns(int24); function deposit0Max() external view returns(uint256); function deposit1Max() external view returns(uint256); function maxTotalSupply() external view returns(uint256); function hysteresis() external view returns(uint256); function getTotalAmounts() external view returns (uint256, uint256); function deposit( uint256, uint256, address ) external returns (uint256); function withdraw( uint256, address ) external returns (uint256, uint256); function rebalance( int24 _baseLower, int24 _baseUpper, int24 _limitLower, int24 _limitUpper, int256 swapQuantity ) external; function collectFees() external returns(uint256 fees0, uint256 fees1); function setDepositMax( uint256 _deposit0Max, uint256 _deposit1Max) external; function setAffiliate( address _affiliate) external; event DeployICHIVault( address indexed sender, address indexed pool, bool allowToken0, bool allowToken1, address owner, uint256 twapPeriod); event SetTwapPeriod( address sender, uint32 newTwapPeriod ); event Deposit( address indexed sender, address indexed to, uint256 shares, uint256 amount0, uint256 amount1 ); event Withdraw( address indexed sender, address indexed to, uint256 shares, uint256 amount0, uint256 amount1 ); event Rebalance( int24 tick, uint256 totalAmount0, uint256 totalAmount1, uint256 feeAmount0, uint256 feeAmount1, uint256 totalSupply ); event CollectFees( address indexed sender, uint256 feeAmount0, uint256 feeAmount1 ); event MaxTotalSupply( address indexed sender, uint256 maxTotalSupply); event Hysteresis( address indexed sender, uint256 hysteresis); event DepositMax( address indexed sender, uint256 deposit0Max, uint256 deposit1Max); event Affiliate( address indexed sender, address affiliate); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; interface IICHIVaultFactory { event FeeRecipient( address indexed sender, address feeRecipient); event AmmFeeRecipient( address indexed sender, address ammFeeRecipient); event AmmFee( address indexed sender, uint256 ammFee); event BaseFee( address indexed sender, uint256 baseFee); event BaseFeeSplit( address indexed sender, uint256 baseFeeSplit); event DeployICHIVaultFactory( address indexed sender, address algebraFactory); event ICHIVaultCreated( address indexed sender, address ichiVault, address tokenA, bool allowTokenA, address tokenB, bool allowTokenB, uint256 count); function algebraFactory() external view returns(address); function feeRecipient() external view returns(address); function ammFeeRecipient() external view returns(address); function ammFee() external view returns(uint256); function baseFee() external view returns(uint256); function baseFeeSplit() external view returns(uint256); function setFeeRecipient(address _feeRecipient) external; function setAmmFeeRecipient(address _ammFeeRecipient) external; function setAmmFee(uint256 _ammFee) external; function setBaseFee(uint256 _baseFee) external; function setBaseFeeSplit(uint256 _baseFeeSplit) external; function createICHIVault( address tokenA, bool allowTokenA, address tokenB, bool allowTokenB ) external returns (address ichiVault); function genKey( address deployer, address token0, address token1, bool allowToken0, bool allowToken1) external pure returns(bytes32 key); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Math library for computing sqrt prices from ticks and vice versa /// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports /// prices between 2**-128 and 2**128 /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/blob/main/contracts/libraries library TickMath { /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**-128 int24 internal constant MIN_TICK = -887272; /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**128 int24 internal constant MAX_TICK = -MIN_TICK; /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK) uint160 internal constant MIN_SQRT_RATIO = 4295128739; /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK) uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342; /// @notice Calculates sqrt(1.0001^tick) * 2^96 /// @dev Throws if |tick| > max tick /// @param tick The input tick for the above formula /// @return price A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0) /// at the given tick function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 price) { // get abs value int24 mask = tick >> (24 - 1); uint256 absTick = uint256((tick ^ mask) - mask); require(absTick <= uint256(MAX_TICK), 'T'); uint256 ratio = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000; if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128; if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128; if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128; if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128; if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128; if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128; if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128; if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128; if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128; if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128; if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128; if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128; if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128; if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128; if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128; if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128; if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128; if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128; if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128; if (tick > 0) ratio = type(uint256).max / ratio; // this divides by 1<<32 rounding up to go from a Q128.128 to a Q128.96. // we then downcast because we know the result always fits within 160 bits due to our tick input constraint // we round up in the division so getTickAtSqrtRatio of the output price is always consistent price = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1)); } /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio /// @dev Throws in case price < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may /// ever return. /// @param price The sqrt ratio for which to compute the tick as a Q64.96 /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio function getTickAtSqrtRatio(uint160 price) internal pure returns (int24 tick) { // second inequality must be < because the price can never reach the price at the max tick require(price >= MIN_SQRT_RATIO && price < MAX_SQRT_RATIO, 'R'); uint256 ratio = uint256(price) << 32; uint256 r = ratio; uint256 msb = 0; assembly { let f := shl(7, gt(r, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(6, gt(r, 0xFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(5, gt(r, 0xFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(4, gt(r, 0xFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(3, gt(r, 0xFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(2, gt(r, 0xF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(1, gt(r, 0x3)) msb := or(msb, f) r := shr(f, r) } assembly { let f := gt(r, 0x1) msb := or(msb, f) } if (msb >= 128) r = ratio >> (msb - 127); else r = ratio << (127 - msb); int256 log_2 = (int256(msb) - 128) << 64; assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(63, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(62, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(61, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(60, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(59, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(58, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(57, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(56, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(55, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(54, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(53, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(52, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(51, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(50, f)) } int256 log_sqrt10001 = log_2 * 255738958999603826347141; // 128.128 number int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128); int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128); tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= price ? tickHi : tickLow; } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import '@cryptoalgebra/v1-core/contracts/libraries/FullMath.sol'; import '@cryptoalgebra/v1-core/contracts/libraries/Constants.sol'; /// @title Liquidity amount functions /// @notice Provides functions for computing liquidity amounts from token amounts and prices /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-periphery library LiquidityAmounts { /// @notice Downcasts uint256 to uint128 /// @param x The uint258 to be downcasted /// @return y The passed value, downcasted to uint128 function toUint128(uint256 x) private pure returns (uint128 y) { require((y = uint128(x)) == x); } /// @notice Computes the amount of liquidity received for a given amount of token0 and price range /// @dev Calculates amount0 * (sqrt(upper) * sqrt(lower)) / (sqrt(upper) - sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount0 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount0( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); uint256 intermediate = FullMath.mulDiv(sqrtRatioAX96, sqrtRatioBX96, Constants.Q96); return toUint128(FullMath.mulDiv(amount0, intermediate, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the amount of liquidity received for a given amount of token1 and price range /// @dev Calculates amount1 / (sqrt(upper) - sqrt(lower)). /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount1 The amount1 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount1( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return toUint128(FullMath.mulDiv(amount1, Constants.Q96, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the maximum amount of liquidity received for a given amount of token0, token1, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount of token0 being sent in /// @param amount1 The amount of token1 being sent in /// @return liquidity The maximum amount of liquidity received function getLiquidityForAmounts( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { liquidity = getLiquidityForAmount0(sqrtRatioAX96, sqrtRatioBX96, amount0); } else if (sqrtRatioX96 < sqrtRatioBX96) { uint128 liquidity0 = getLiquidityForAmount0(sqrtRatioX96, sqrtRatioBX96, amount0); uint128 liquidity1 = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioX96, amount1); liquidity = liquidity0 < liquidity1 ? liquidity0 : liquidity1; } else { liquidity = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioBX96, amount1); } } /// @notice Computes the amount of token0 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 function getAmount0ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv(uint256(liquidity) << Constants.RESOLUTION, sqrtRatioBX96 - sqrtRatioAX96, sqrtRatioBX96) / sqrtRatioAX96; } /// @notice Computes the amount of token1 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount1 The amount of token1 function getAmount1ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, Constants.Q96); } /// @notice Computes the token0 and token1 value for a given amount of liquidity, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 /// @return amount1 The amount of token1 function getAmountsForLiquidity( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0, uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { amount0 = getAmount0ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } else if (sqrtRatioX96 < sqrtRatioBX96) { amount0 = getAmount0ForLiquidity(sqrtRatioX96, sqrtRatioBX96, liquidity); amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioX96, liquidity); } else { amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0 <0.8.0; import '@cryptoalgebra/v1-core/contracts/libraries/FullMath.sol'; import '@cryptoalgebra/v1-core/contracts/libraries/TickMath.sol'; import '@cryptoalgebra/v1-core/contracts/interfaces/IAlgebraPool.sol'; import '@cryptoalgebra/v1-core/contracts/libraries/LowGasSafeMath.sol'; import '../libraries/PoolAddress.sol'; /// @title DataStorage library /// @notice Provides functions to integrate with pool dataStorage library DataStorageLibrary { /// @notice Fetches time-weighted average tick using Algebra dataStorage /// @param pool Address of Algebra pool that we want to getTimepoints /// @param period Number of seconds in the past to start calculating time-weighted average /// @return timeWeightedAverageTick The time-weighted average tick from (block.timestamp - period) to block.timestamp function consult(address pool, uint32 period) internal view returns (int24 timeWeightedAverageTick) { require(period != 0, 'BP'); uint32[] memory secondAgos = new uint32[](2); secondAgos[0] = period; secondAgos[1] = 0; (int56[] memory tickCumulatives, , , ) = IAlgebraPool(pool).getTimepoints(secondAgos); int56 tickCumulativesDelta = tickCumulatives[1] - tickCumulatives[0]; timeWeightedAverageTick = int24(tickCumulativesDelta / period); // Always round to negative infinity if (tickCumulativesDelta < 0 && (tickCumulativesDelta % period != 0)) timeWeightedAverageTick--; } /// @notice Given a tick and a token amount, calculates the amount of token received in exchange /// @param tick Tick value used to calculate the quote /// @param baseAmount Amount of token to be converted /// @param baseToken Address of an ERC20 token contract used as the baseAmount denomination /// @param quoteToken Address of an ERC20 token contract used as the quoteAmount denomination /// @return quoteAmount Amount of quoteToken received for baseAmount of baseToken function getQuoteAtTick( int24 tick, uint128 baseAmount, address baseToken, address quoteToken ) internal pure returns (uint256 quoteAmount) { uint160 sqrtRatioX96 = TickMath.getSqrtRatioAtTick(tick); // Calculate quoteAmount with better precision if it doesn't overflow when multiplied by itself if (sqrtRatioX96 <= type(uint128).max) { uint256 ratioX192 = uint256(sqrtRatioX96) * sqrtRatioX96; quoteAmount = baseToken < quoteToken ? FullMath.mulDiv(ratioX192, baseAmount, 1 << 192) : FullMath.mulDiv(1 << 192, baseAmount, ratioX192); } else { uint256 ratioX128 = FullMath.mulDiv(sqrtRatioX96, sqrtRatioX96, 1 << 64); quoteAmount = baseToken < quoteToken ? FullMath.mulDiv(ratioX128, baseAmount, 1 << 128) : FullMath.mulDiv(1 << 128, baseAmount, ratioX128); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev String operations. */ library Strings { /** * @dev Converts a `uint256` to its ASCII `string` representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = bytes1(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.4.0 || ^0.5.0 || ^0.6.0 || ^0.7.0; /// @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 = a * b; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Make sure the result is less than 2**256. // Also prevents denominator == 0 require(denominator > prod1); // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { assembly { result := div(prod0, denominator) } return result; } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod // Subtract 256 bit remainder from 512 bit number assembly { let remainder := mulmod(a, b, denominator) 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; // 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 preconditions 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) { if (a == 0 || ((result = a * b) / a == b)) { require(denominator > 0); assembly { result := add(div(result, denominator), gt(mod(result, denominator), 0)) } } else { result = mulDiv(a, b, denominator); if (mulmod(a, b, denominator) > 0) { require(result < type(uint256).max); result++; } } } /// @notice Returns ceil(x / y) /// @dev division by 0 has unspecified behavior, and must be checked externally /// @param x The dividend /// @param y The divisor /// @return z The quotient, ceil(x / y) function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := add(div(x, y), gt(mod(x, y), 0)) } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity =0.7.6; library Constants { uint8 internal constant RESOLUTION = 96; uint256 internal constant Q96 = 0x1000000000000000000000000; uint256 internal constant Q128 = 0x100000000000000000000000000000000; // fee value in hundredths of a bip, i.e. 1e-6 uint16 internal constant BASE_FEE = 100; int24 internal constant TICK_SPACING = 60; // max(uint128) / ( (MAX_TICK - MIN_TICK) / TICK_SPACING ) uint128 internal constant MAX_LIQUIDITY_PER_TICK = 11505743598341114571880798222544994; uint32 internal constant MAX_LIQUIDITY_COOLDOWN = 1 days; uint8 internal constant MAX_COMMUNITY_FEE = 250; uint256 internal constant COMMUNITY_FEE_DENOMINATOR = 1000; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.0; /// @title Optimized overflow and underflow safe math operations /// @notice Contains methods for doing math operations that revert on overflow or underflow for minimal gas cost /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/blob/main/contracts/libraries library LowGasSafeMath { /// @notice Returns x + y, reverts if sum overflows uint256 /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x); } /// @notice Returns x - y, reverts if underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x - y) <= x); } /// @notice Returns x * y, reverts if overflows /// @param x The multiplicand /// @param y The multiplier /// @return z The product of x and y function mul(uint256 x, uint256 y) internal pure returns (uint256 z) { require(x == 0 || (z = x * y) / x == y); } /// @notice Returns x + y, reverts if overflows or underflows /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(int256 x, int256 y) internal pure returns (int256 z) { require((z = x + y) >= x == (y >= 0)); } /// @notice Returns x - y, reverts if overflows or underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(int256 x, int256 y) internal pure returns (int256 z) { require((z = x - y) <= x == (y >= 0)); } /// @notice Returns x + y, reverts if overflows or underflows /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add128(uint128 x, uint128 y) internal pure returns (uint128 z) { require((z = x + y) >= x); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Provides functions for deriving a pool address from the factory, tokens, and the fee /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-periphery library PoolAddress { bytes32 internal constant POOL_INIT_CODE_HASH = 0x6ec6c9c8091d160c0aa74b2b14ba9c1717e95093bd3ac085cee99a49aab294a4; /// @notice The identifying key of the pool struct PoolKey { address token0; address token1; } /// @notice Returns PoolKey: the ordered tokens with the matched fee levels /// @param tokenA The first token of a pool, unsorted /// @param tokenB The second token of a pool, unsorted /// @return Poolkey The pool details with ordered token0 and token1 assignments function getPoolKey(address tokenA, address tokenB) internal pure returns (PoolKey memory) { if (tokenA > tokenB) (tokenA, tokenB) = (tokenB, tokenA); return PoolKey({token0: tokenA, token1: tokenB}); } /// @notice Deterministically computes the pool address given the factory and PoolKey /// @param factory The Algebra factory contract address /// @param key The PoolKey /// @return pool The contract address of the V3 pool function computeAddress(address factory, PoolKey memory key) internal pure returns (address pool) { require(key.token0 < key.token1); pool = address( uint256( keccak256( abi.encodePacked( hex'ff', factory, keccak256(abi.encode(key.token0, key.token1)), POOL_INIT_CODE_HASH ) ) ) ); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import '../IDataStorageOperator.sol'; /// @title Pool state that never changes /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraPoolImmutables { /** * @notice The contract that stores all the timepoints and can perform actions with them * @return The operator address */ function dataStorageOperator() external view returns (address); /** * @notice The contract that deployed the pool, which must adhere to the IAlgebraFactory interface * @return The contract address */ function factory() external view returns (address); /** * @notice The first of the two tokens of the pool, sorted by address * @return The token contract address */ function token0() external view returns (address); /** * @notice The second of the two tokens of the pool, sorted by address * @return The token contract address */ function token1() external view returns (address); /** * @notice The pool tick spacing * @dev Ticks can only be used at multiples of this value * e.g.: a tickSpacing of 60 means ticks can be initialized every 60th tick, i.e., ..., -120, -60, 0, 60, 120, ... * This value is an int24 to avoid casting even though it is always positive. * @return The tick spacing */ function tickSpacing() external view returns (int24); /** * @notice The maximum amount of position liquidity that can use any tick in the range * @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and * also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool * @return The max amount of liquidity per tick */ function maxLiquidityPerTick() external view returns (uint128); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that can change /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraPoolState { /** * @notice The globalState structure in the pool stores many values but requires only one slot * and is exposed as a single method to save gas when accessed externally. * @return price The current price of the pool as a sqrt(token1/token0) Q64.96 value; * Returns tick The current tick of the pool, i.e. according to the last tick transition that was run; * Returns This value may not always be equal to SqrtTickMath.getTickAtSqrtRatio(price) if the price is on a tick * boundary; * Returns fee The last pool fee value in hundredths of a bip, i.e. 1e-6; * Returns timepointIndex The index of the last written timepoint; * Returns communityFeeToken0 The community fee percentage of the swap fee in thousandths (1e-3) for token0; * Returns communityFeeToken1 The community fee percentage of the swap fee in thousandths (1e-3) for token1; * Returns unlocked Whether the pool is currently locked to reentrancy; */ function globalState() external view returns ( uint160 price, int24 tick, uint16 fee, uint16 timepointIndex, uint8 communityFeeToken0, uint8 communityFeeToken1, bool unlocked ); /** * @notice The fee growth as a Q128.128 fees of token0 collected per unit of liquidity for the entire life of the pool * @dev This value can overflow the uint256 */ function totalFeeGrowth0Token() external view returns (uint256); /** * @notice The fee growth as a Q128.128 fees of token1 collected per unit of liquidity for the entire life of the pool * @dev This value can overflow the uint256 */ function totalFeeGrowth1Token() external view returns (uint256); /** * @notice The currently in range liquidity available to the pool * @dev This value has no relationship to the total liquidity across all ticks. * Returned value cannot exceed type(uint128).max */ function liquidity() external view returns (uint128); /** * @notice Look up information about a specific tick in the pool * @dev This is a public structure, so the `return` natspec tags are omitted. * @param tick The tick to look up * @return liquidityTotal the total amount of position liquidity that uses the pool either as tick lower or * tick upper; * Returns liquidityDelta how much liquidity changes when the pool price crosses the tick; * Returns outerFeeGrowth0Token the fee growth on the other side of the tick from the current tick in token0; * Returns outerFeeGrowth1Token the fee growth on the other side of the tick from the current tick in token1; * Returns outerTickCumulative the cumulative tick value on the other side of the tick from the current tick; * Returns outerSecondsPerLiquidity the seconds spent per liquidity on the other side of the tick from the current tick; * Returns outerSecondsSpent the seconds spent on the other side of the tick from the current tick; * Returns initialized Set to true if the tick is initialized, i.e. liquidityTotal is greater than 0 * otherwise equal to false. Outside values can only be used if the tick is initialized. * In addition, these values are only relative and must be used only in comparison to previous snapshots for * a specific position. */ function ticks(int24 tick) external view returns ( uint128 liquidityTotal, int128 liquidityDelta, uint256 outerFeeGrowth0Token, uint256 outerFeeGrowth1Token, int56 outerTickCumulative, uint160 outerSecondsPerLiquidity, uint32 outerSecondsSpent, bool initialized ); /** @notice Returns 256 packed tick initialized boolean values. See TickTable for more information */ function tickTable(int16 wordPosition) external view returns (uint256); /** * @notice Returns the information about a position by the position's key * @dev This is a public mapping of structures, so the `return` natspec tags are omitted. * @param key The position's key is a hash of a preimage composed by the owner, bottomTick and topTick * @return liquidityAmount The amount of liquidity in the position; * Returns lastLiquidityAddTimestamp Timestamp of last adding of liquidity; * Returns innerFeeGrowth0Token Fee growth of token0 inside the tick range as of the last mint/burn/poke; * Returns innerFeeGrowth1Token Fee growth of token1 inside the tick range as of the last mint/burn/poke; * Returns fees0 The computed amount of token0 owed to the position as of the last mint/burn/poke; * Returns fees1 The computed amount of token1 owed to the position as of the last mint/burn/poke */ function positions(bytes32 key) external view returns ( uint128 liquidityAmount, uint32 lastLiquidityAddTimestamp, uint256 innerFeeGrowth0Token, uint256 innerFeeGrowth1Token, uint128 fees0, uint128 fees1 ); /** * @notice Returns data about a specific timepoint index * @param index The element of the timepoints array to fetch * @dev You most likely want to use #getTimepoints() instead of this method to get an timepoint as of some amount of time * ago, rather than at a specific index in the array. * This is a public mapping of structures, so the `return` natspec tags are omitted. * @return initialized whether the timepoint has been initialized and the values are safe to use; * Returns blockTimestamp The timestamp of the timepoint; * Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the timepoint timestamp; * Returns secondsPerLiquidityCumulative the seconds per in range liquidity for the life of the pool as of the timepoint timestamp; * Returns volatilityCumulative Cumulative standard deviation for the life of the pool as of the timepoint timestamp; * Returns averageTick Time-weighted average tick; * Returns volumePerLiquidityCumulative Cumulative swap volume per liquidity for the life of the pool as of the timepoint timestamp; */ function timepoints(uint256 index) external view returns ( bool initialized, uint32 blockTimestamp, int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint88 volatilityCumulative, int24 averageTick, uint144 volumePerLiquidityCumulative ); /** * @notice Returns the information about active incentive * @dev if there is no active incentive at the moment, virtualPool,endTimestamp,startTimestamp would be equal to 0 * @return virtualPool The address of a virtual pool associated with the current active incentive */ function activeIncentive() external view returns (address virtualPool); /** * @notice Returns the lock time for added liquidity */ function liquidityCooldown() external view returns (uint32 cooldownInSeconds); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /** * @title Pool state that is not stored * @notice Contains view functions to provide information about the pool that is computed rather than stored on the * blockchain. The functions here may have variable gas costs. * @dev Credit to Uniswap Labs under GPL-2.0-or-later license: * https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces */ interface IAlgebraPoolDerivedState { /** * @notice Returns the cumulative tick and liquidity as of each timestamp `secondsAgo` from the current block timestamp * @dev To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing * the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick, * you must call it with secondsAgos = [3600, 0]. * @dev The time weighted average tick represents the geometric time weighted average price of the pool, in * log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio. * @param secondsAgos From how long ago each cumulative tick and liquidity value should be returned * @return tickCumulatives Cumulative tick values as of each `secondsAgos` from the current block timestamp * @return secondsPerLiquidityCumulatives Cumulative seconds per liquidity-in-range value as of each `secondsAgos` * from the current block timestamp * @return volatilityCumulatives Cumulative standard deviation as of each `secondsAgos` * @return volumePerAvgLiquiditys Cumulative swap volume per liquidity as of each `secondsAgos` */ function getTimepoints(uint32[] calldata secondsAgos) external view returns ( int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulatives, uint112[] memory volatilityCumulatives, uint256[] memory volumePerAvgLiquiditys ); /** * @notice Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range * @dev Snapshots must only be compared to other snapshots, taken over a period for which a position existed. * I.e., snapshots cannot be compared if a position is not held for the entire period between when the first * snapshot is taken and the second snapshot is taken. * @param bottomTick The lower tick of the range * @param topTick The upper tick of the range * @return innerTickCumulative The snapshot of the tick accumulator for the range * @return innerSecondsSpentPerLiquidity The snapshot of seconds per liquidity for the range * @return innerSecondsSpent The snapshot of the number of seconds during which the price was in this range */ function getInnerCumulatives(int24 bottomTick, int24 topTick) external view returns ( int56 innerTickCumulative, uint160 innerSecondsSpentPerLiquidity, uint32 innerSecondsSpent ); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissionless pool actions /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraPoolActions { /** * @notice Sets the initial price for the pool * @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value * @param price the initial sqrt price of the pool as a Q64.96 */ function initialize(uint160 price) external; /** * @notice Adds liquidity for the given recipient/bottomTick/topTick position * @dev The caller of this method receives a callback in the form of IAlgebraMintCallback# AlgebraMintCallback * in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends * on bottomTick, topTick, the amount of liquidity, and the current price. * @param sender The address which will receive potential surplus of paid tokens * @param recipient The address for which the liquidity will be created * @param bottomTick The lower tick of the position in which to add liquidity * @param topTick The upper tick of the position in which to add liquidity * @param amount The desired amount of liquidity to mint * @param data Any data that should be passed through to the callback * @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback * @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback * @return liquidityActual The actual minted amount of liquidity */ function mint( address sender, address recipient, int24 bottomTick, int24 topTick, uint128 amount, bytes calldata data ) external returns ( uint256 amount0, uint256 amount1, uint128 liquidityActual ); /** * @notice Collects tokens owed to a position * @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. * Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or * amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the * actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity. * @param recipient The address which should receive the fees collected * @param bottomTick The lower tick of the position for which to collect fees * @param topTick The upper tick of the position for which to collect fees * @param amount0Requested How much token0 should be withdrawn from the fees owed * @param amount1Requested How much token1 should be withdrawn from the fees owed * @return amount0 The amount of fees collected in token0 * @return amount1 The amount of fees collected in token1 */ function collect( address recipient, int24 bottomTick, int24 topTick, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); /** * @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position * @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 * @dev Fees must be collected separately via a call to #collect * @param bottomTick The lower tick of the position for which to burn liquidity * @param topTick The upper tick of the position for which to burn liquidity * @param amount How much liquidity to burn * @return amount0 The amount of token0 sent to the recipient * @return amount1 The amount of token1 sent to the recipient */ function burn( int24 bottomTick, int24 topTick, uint128 amount ) external returns (uint256 amount0, uint256 amount1); /** * @notice Swap token0 for token1, or token1 for token0 * @dev The caller of this method receives a callback in the form of IAlgebraSwapCallback# AlgebraSwapCallback * @param recipient The address to receive the output of the swap * @param zeroToOne The direction of the swap, true for token0 to token1, false for token1 to token0 * @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) * @param limitSqrtPrice The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this * value after the swap. If one for zero, the price cannot be greater than this value after the swap * @param data Any data to be passed through to the callback. If using the Router it should contain * SwapRouter#SwapCallbackData * @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive * @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive */ function swap( address recipient, bool zeroToOne, int256 amountSpecified, uint160 limitSqrtPrice, bytes calldata data ) external returns (int256 amount0, int256 amount1); /** * @notice Swap token0 for token1, or token1 for token0 (tokens that have fee on transfer) * @dev The caller of this method receives a callback in the form of I AlgebraSwapCallback# AlgebraSwapCallback * @param sender The address called this function (Comes from the Router) * @param recipient The address to receive the output of the swap * @param zeroToOne The direction of the swap, true for token0 to token1, false for token1 to token0 * @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) * @param limitSqrtPrice The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this * value after the swap. If one for zero, the price cannot be greater than this value after the swap * @param data Any data to be passed through to the callback. If using the Router it should contain * SwapRouter#SwapCallbackData * @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive * @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive */ function swapSupportingFeeOnInputTokens( address sender, address recipient, bool zeroToOne, int256 amountSpecified, uint160 limitSqrtPrice, bytes calldata data ) external returns (int256 amount0, int256 amount1); /** * @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback * @dev The caller of this method receives a callback in the form of IAlgebraFlashCallback# AlgebraFlashCallback * @dev All excess tokens paid in the callback are distributed to liquidity providers as an additional fee. So this method can be used * to donate underlying tokens to currently in-range liquidity providers by calling with 0 amount{0,1} and sending * the donation amount(s) from the callback * @param recipient The address which will receive the token0 and token1 amounts * @param amount0 The amount of token0 to send * @param amount1 The amount of token1 to send * @param data Any data to be passed through to the callback */ function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /** * @title Permissioned pool actions * @notice Contains pool methods that may only be called by the factory owner or tokenomics * @dev Credit to Uniswap Labs under GPL-2.0-or-later license: * https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces */ interface IAlgebraPoolPermissionedActions { /** * @notice Set the community's % share of the fees. Cannot exceed 25% (250) * @param communityFee0 new community fee percent for token0 of the pool in thousandths (1e-3) * @param communityFee1 new community fee percent for token1 of the pool in thousandths (1e-3) */ function setCommunityFee(uint8 communityFee0, uint8 communityFee1) external; /** * @notice Sets an active incentive * @param virtualPoolAddress The address of a virtual pool associated with the incentive */ function setIncentive(address virtualPoolAddress) external; /** * @notice Sets new lock time for added liquidity * @param newLiquidityCooldown The time in seconds */ function setLiquidityCooldown(uint32 newLiquidityCooldown) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Events emitted by a pool /// @dev Credit to Uniswap Labs under GPL-2.0-or-later license: /// https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces interface IAlgebraPoolEvents { /** * @notice Emitted exactly once by a pool when #initialize is first called on the pool * @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize * @param price The initial sqrt price of the pool, as a Q64.96 * @param tick The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool */ event Initialize(uint160 price, int24 tick); /** * @notice Emitted when liquidity is minted for a given position * @param sender The address that minted the liquidity * @param owner The owner of the position and recipient of any minted liquidity * @param bottomTick The lower tick of the position * @param topTick The upper tick of the position * @param liquidityAmount The amount of liquidity minted to the position range * @param amount0 How much token0 was required for the minted liquidity * @param amount1 How much token1 was required for the minted liquidity */ event Mint( address sender, address indexed owner, int24 indexed bottomTick, int24 indexed topTick, uint128 liquidityAmount, uint256 amount0, uint256 amount1 ); /** * @notice Emitted when fees are collected by the owner of a position * @dev Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees * @param owner The owner of the position for which fees are collected * @param recipient The address that received fees * @param bottomTick The lower tick of the position * @param topTick The upper tick of the position * @param amount0 The amount of token0 fees collected * @param amount1 The amount of token1 fees collected */ event Collect(address indexed owner, address recipient, int24 indexed bottomTick, int24 indexed topTick, uint128 amount0, uint128 amount1); /** * @notice Emitted when a position's liquidity is removed * @dev Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect * @param owner The owner of the position for which liquidity is removed * @param bottomTick The lower tick of the position * @param topTick The upper tick of the position * @param liquidityAmount The amount of liquidity to remove * @param amount0 The amount of token0 withdrawn * @param amount1 The amount of token1 withdrawn */ event Burn(address indexed owner, int24 indexed bottomTick, int24 indexed topTick, uint128 liquidityAmount, uint256 amount0, uint256 amount1); /** * @notice Emitted by the pool for any swaps between token0 and token1 * @param sender The address that initiated the swap call, and that received the callback * @param recipient The address that received the output of the swap * @param amount0 The delta of the token0 balance of the pool * @param amount1 The delta of the token1 balance of the pool * @param price The sqrt(price) of the pool after the swap, as a Q64.96 * @param liquidity The liquidity of the pool after the swap * @param tick The log base 1.0001 of price of the pool after the swap */ event Swap(address indexed sender, address indexed recipient, int256 amount0, int256 amount1, uint160 price, uint128 liquidity, int24 tick); /** * @notice Emitted by the pool for any flashes of token0/token1 * @param sender The address that initiated the swap call, and that received the callback * @param recipient The address that received the tokens from flash * @param amount0 The amount of token0 that was flashed * @param amount1 The amount of token1 that was flashed * @param paid0 The amount of token0 paid for the flash, which can exceed the amount0 plus the fee * @param paid1 The amount of token1 paid for the flash, which can exceed the amount1 plus the fee */ event Flash(address indexed sender, address indexed recipient, uint256 amount0, uint256 amount1, uint256 paid0, uint256 paid1); /** * @notice Emitted when the community fee is changed by the pool * @param communityFee0New The updated value of the token0 community fee percent * @param communityFee1New The updated value of the token1 community fee percent */ event CommunityFee(uint8 communityFee0New, uint8 communityFee1New); /** * @notice Emitted when new activeIncentive is set * @param virtualPoolAddress The address of a virtual pool associated with the current active incentive */ event Incentive(address indexed virtualPoolAddress); /** * @notice Emitted when the fee changes * @param fee The value of the token fee */ event Fee(uint16 fee); /** * @notice Emitted when the LiquidityCooldown changes * @param liquidityCooldown The value of locktime for added liquidity */ event LiquidityCooldown(uint32 liquidityCooldown); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity =0.7.6; import './Constants.sol'; /// @title AdaptiveFee /// @notice Calculates fee based on combination of sigmoids library AdaptiveFee { // alpha1 + alpha2 + baseFee must be <= type(uint16).max struct Configuration { uint16 alpha1; // max value of the first sigmoid uint16 alpha2; // max value of the second sigmoid uint32 beta1; // shift along the x-axis for the first sigmoid uint32 beta2; // shift along the x-axis for the second sigmoid uint16 gamma1; // horizontal stretch factor for the first sigmoid uint16 gamma2; // horizontal stretch factor for the second sigmoid uint32 volumeBeta; // shift along the x-axis for the outer volume-sigmoid uint16 volumeGamma; // horizontal stretch factor the outer volume-sigmoid uint16 baseFee; // minimum possible fee } /// @notice Calculates fee based on formula: /// baseFee + sigmoidVolume(sigmoid1(volatility, volumePerLiquidity) + sigmoid2(volatility, volumePerLiquidity)) /// maximum value capped by baseFee + alpha1 + alpha2 function getFee( uint88 volatility, uint256 volumePerLiquidity, Configuration memory config ) internal pure returns (uint16 fee) { uint256 sumOfSigmoids = sigmoid(volatility, config.gamma1, config.alpha1, config.beta1) + sigmoid(volatility, config.gamma2, config.alpha2, config.beta2); if (sumOfSigmoids > type(uint16).max) { // should be impossible, just in case sumOfSigmoids = type(uint16).max; } return uint16(config.baseFee + sigmoid(volumePerLiquidity, config.volumeGamma, uint16(sumOfSigmoids), config.volumeBeta)); // safe since alpha1 + alpha2 + baseFee _must_ be <= type(uint16).max } /// @notice calculates α / (1 + e^( (β-x) / γ)) /// that is a sigmoid with a maximum value of α, x-shifted by β, and stretched by γ /// @dev returns uint256 for fuzzy testing. Guaranteed that the result is not greater than alpha function sigmoid( uint256 x, uint16 g, uint16 alpha, uint256 beta ) internal pure returns (uint256 res) { if (x > beta) { x = x - beta; if (x >= 6 * uint256(g)) return alpha; // so x < 19 bits uint256 g8 = uint256(g)**8; // < 128 bits (8*16) uint256 ex = exp(x, g, g8); // < 155 bits res = (alpha * ex) / (g8 + ex); // in worst case: (16 + 155 bits) / 155 bits // so res <= alpha } else { x = beta - x; if (x >= 6 * uint256(g)) return 0; // so x < 19 bits uint256 g8 = uint256(g)**8; // < 128 bits (8*16) uint256 ex = g8 + exp(x, g, g8); // < 156 bits res = (alpha * g8) / ex; // in worst case: (16 + 128 bits) / 156 bits // g8 <= ex, so res <= alpha } } /// @notice calculates e^(x/g) * g^8 in a series, since (around zero): /// e^x = 1 + x + x^2/2 + ... + x^n/n! + ... /// e^(x/g) = 1 + x/g + x^2/(2*g^2) + ... + x^(n)/(g^n * n!) + ... function exp( uint256 x, uint16 g, uint256 gHighestDegree ) internal pure returns (uint256 res) { // calculating: // g**8 + x * g**7 + (x**2 * g**6) / 2 + (x**3 * g**5) / 6 + (x**4 * g**4) / 24 + (x**5 * g**3) / 120 + (x**6 * g^2) / 720 + x**7 * g / 5040 + x**8 / 40320 // x**8 < 152 bits (19*8) and g**8 < 128 bits (8*16) // so each summand < 152 bits and res < 155 bits uint256 xLowestDegree = x; res = gHighestDegree; // g**8 gHighestDegree /= g; // g**7 res += xLowestDegree * gHighestDegree; gHighestDegree /= g; // g**6 xLowestDegree *= x; // x**2 res += (xLowestDegree * gHighestDegree) / 2; gHighestDegree /= g; // g**5 xLowestDegree *= x; // x**3 res += (xLowestDegree * gHighestDegree) / 6; gHighestDegree /= g; // g**4 xLowestDegree *= x; // x**4 res += (xLowestDegree * gHighestDegree) / 24; gHighestDegree /= g; // g**3 xLowestDegree *= x; // x**5 res += (xLowestDegree * gHighestDegree) / 120; gHighestDegree /= g; // g**2 xLowestDegree *= x; // x**6 res += (xLowestDegree * gHighestDegree) / 720; xLowestDegree *= x; // x**7 res += (xLowestDegree * g) / 5040 + (xLowestDegree * x) / (40320); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": { "contracts/lib/UV3Math.sol": { "UV3Math": "0xcf1ebe0ad3c00c6836f5bd72cda5e022b4b0068a" } } }
Contract Security Audit
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Contract ABI
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Deployed Bytecode
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Multichain Portfolio | 34 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.