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Update Config Ma... | 17384213 | 607 days ago | IN | 0 ETH | 0.00102657 | ||||
Update Fee Confi... | 17322912 | 616 days ago | IN | 0 ETH | 0.0020946 | ||||
Update Config Ma... | 17291992 | 620 days ago | IN | 0 ETH | 0.00099806 | ||||
Enable Swap Fee | 17291991 | 620 days ago | IN | 0 ETH | 0.00156415 | ||||
Enable Swap Fee | 17291991 | 620 days ago | IN | 0 ETH | 0.00156415 | ||||
Enable Swap Fee | 17291991 | 620 days ago | IN | 0 ETH | 0.00156376 | ||||
Enable Swap Fee | 17291991 | 620 days ago | IN | 0 ETH | 0.00156376 | ||||
Enable Swap Fee | 17291991 | 620 days ago | IN | 0 ETH | 0.00155418 | ||||
Add NFT Manager | 17291991 | 620 days ago | IN | 0 ETH | 0.00322668 |
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Contract Source Code Verified (Exact Match)
Contract Name:
Factory
Compiler Version
v0.8.9+commit.e5eed63a
Optimization Enabled:
Yes with 500 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.9; import {EnumerableSet} from '@openzeppelin/contracts/utils/structs/EnumerableSet.sol'; import {MathConstants} from './libraries/MathConstants.sol'; import {BaseSplitCodeFactory} from './libraries/BaseSplitCodeFactory.sol'; import {IFactory} from './interfaces/IFactory.sol'; import {IPoolOracle} from './interfaces/oracle/IPoolOracle.sol'; import {Pool} from './Pool.sol'; /// @title KyberSwap v2 factory /// @notice Deploys KyberSwap v2 pools and manages control over government fees contract Factory is BaseSplitCodeFactory, IFactory { using EnumerableSet for EnumerableSet.AddressSet; struct Parameters { address factory; address poolOracle; address token0; address token1; uint24 swapFeeUnits; int24 tickDistance; } /// @inheritdoc IFactory Parameters public override parameters; /// @inheritdoc IFactory bytes32 public immutable override poolInitHash; address public immutable override poolOracle; address public override configMaster; bool public override whitelistDisabled; address private feeTo; uint24 private governmentFeeUnits; uint32 public override vestingPeriod; /// @inheritdoc IFactory mapping(uint24 => int24) public override feeAmountTickDistance; /// @inheritdoc IFactory mapping(address => mapping(address => mapping(uint24 => address))) public override getPool; // list of whitelisted NFT position manager(s) // that are allowed to burn liquidity tokens on behalf of users EnumerableSet.AddressSet internal whitelistedNFTManagers; event NFTManagerAdded(address _nftManager, bool added); event NFTManagerRemoved(address _nftManager, bool removed); modifier onlyConfigMaster() { require(msg.sender == configMaster, 'forbidden'); _; } constructor(uint32 _vestingPeriod, address _poolOracle) BaseSplitCodeFactory(type(Pool).creationCode) { poolInitHash = keccak256(type(Pool).creationCode); require(_poolOracle != address(0), 'invalid pool oracle'); poolOracle = _poolOracle; vestingPeriod = _vestingPeriod; emit VestingPeriodUpdated(_vestingPeriod); configMaster = msg.sender; emit ConfigMasterUpdated(address(0), configMaster); feeAmountTickDistance[8] = 1; emit SwapFeeEnabled(8, 1); feeAmountTickDistance[10] = 1; emit SwapFeeEnabled(10, 1); feeAmountTickDistance[40] = 8; emit SwapFeeEnabled(40, 8); feeAmountTickDistance[300] = 60; emit SwapFeeEnabled(300, 60); feeAmountTickDistance[1000] = 200; emit SwapFeeEnabled(1000, 200); } /// @inheritdoc IFactory function createPool( address tokenA, address tokenB, uint24 swapFeeUnits ) external override returns (address pool) { require(tokenA != tokenB, 'identical tokens'); (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); require(token0 != address(0), 'null address'); int24 tickDistance = feeAmountTickDistance[swapFeeUnits]; require(tickDistance != 0, 'invalid fee'); require(getPool[token0][token1][swapFeeUnits] == address(0), 'pool exists'); parameters.factory = address(this); parameters.poolOracle = poolOracle; parameters.token0 = token0; parameters.token1 = token1; parameters.swapFeeUnits = swapFeeUnits; parameters.tickDistance = tickDistance; pool = _create(bytes(''), keccak256(abi.encode(token0, token1, swapFeeUnits))); getPool[token0][token1][swapFeeUnits] = pool; // populate mapping in the reverse direction, deliberate choice to avoid the cost of comparing addresses getPool[token1][token0][swapFeeUnits] = pool; emit PoolCreated(token0, token1, swapFeeUnits, tickDistance, pool); } /// @inheritdoc IFactory function updateConfigMaster(address _configMaster) external override onlyConfigMaster { emit ConfigMasterUpdated(configMaster, _configMaster); configMaster = _configMaster; } /// @inheritdoc IFactory function enableWhitelist() external override onlyConfigMaster { whitelistDisabled = false; emit WhitelistEnabled(); } /// @inheritdoc IFactory function disableWhitelist() external override onlyConfigMaster { whitelistDisabled = true; emit WhitelistDisabled(); } // Whitelists an NFT manager // Returns true if addition was successful, that is if it was not already present function addNFTManager(address _nftManager) external onlyConfigMaster returns (bool added) { added = whitelistedNFTManagers.add(_nftManager); emit NFTManagerAdded(_nftManager, added); } // Removes a whitelisted NFT manager // Returns true if removal was successful, that is if it was not already present function removeNFTManager(address _nftManager) external onlyConfigMaster returns (bool removed) { removed = whitelistedNFTManagers.remove(_nftManager); emit NFTManagerRemoved(_nftManager, removed); } /// @inheritdoc IFactory function updateVestingPeriod(uint32 _vestingPeriod) external override onlyConfigMaster { vestingPeriod = _vestingPeriod; emit VestingPeriodUpdated(_vestingPeriod); } /// @inheritdoc IFactory function enableSwapFee(uint24 swapFeeUnits, int24 tickDistance) public override onlyConfigMaster { require(swapFeeUnits < MathConstants.FEE_UNITS, 'invalid fee'); // tick distance is capped at 16384 to prevent the situation where tickDistance is so large that // 16384 ticks represents a >5x price change with ticks of 1 bips require(tickDistance > 0 && tickDistance < 16384, 'invalid tickDistance'); require(feeAmountTickDistance[swapFeeUnits] == 0, 'existing tickDistance'); feeAmountTickDistance[swapFeeUnits] = tickDistance; emit SwapFeeEnabled(swapFeeUnits, tickDistance); } /// @inheritdoc IFactory function updateFeeConfiguration(address _feeTo, uint24 _governmentFeeUnits) external override onlyConfigMaster { require(_governmentFeeUnits <= 20000, 'invalid fee'); require( (_feeTo == address(0) && _governmentFeeUnits == 0) || (_feeTo != address(0) && _governmentFeeUnits != 0), 'bad config' ); feeTo = _feeTo; governmentFeeUnits = _governmentFeeUnits; emit FeeConfigurationUpdated(_feeTo, _governmentFeeUnits); } /// @inheritdoc IFactory function feeConfiguration() external view override returns (address _feeTo, uint24 _governmentFeeUnits) { _feeTo = feeTo; _governmentFeeUnits = governmentFeeUnits; } /// @inheritdoc IFactory function isWhitelistedNFTManager(address sender) external view override returns (bool) { if (whitelistDisabled) return true; return whitelistedNFTManagers.contains(sender); } /// @inheritdoc IFactory function getWhitelistedNFTManagers() external view override returns (address[] memory) { return whitelistedNFTManagers.values(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title Contains constants needed for math libraries library MathConstants { uint256 internal constant TWO_FEE_UNITS = 200_000; uint256 internal constant TWO_POW_96 = 2 ** 96; uint128 internal constant MIN_LIQUIDITY = 100; uint8 internal constant RES_96 = 96; uint24 internal constant FEE_UNITS = 100000; // it is strictly less than 5% price movement if jumping MAX_TICK_DISTANCE ticks int24 internal constant MAX_TICK_DISTANCE = 480; // max number of tick travel when inserting if data changes uint256 internal constant MAX_TICK_TRAVEL = 10; }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import './CodeDeployer.sol'; /** * @dev Base factory for contracts whose creation code is so large that the factory cannot hold it. This happens when * the contract's creation code grows close to 24kB. * * Note that this factory cannot help with contracts that have a *runtime* (deployed) bytecode larger than 24kB. * Taken from BalancerV2. Only modification made was to add unchecked block for sol 0.8 compatibility */ abstract contract BaseSplitCodeFactory { // The contract's creation code is stored as code in two separate addresses, and retrieved via `extcodecopy`. This // means this factory supports contracts with creation code of up to 48kB. // We rely on inline-assembly to achieve this, both to make the entire operation highly gas efficient, and because // `extcodecopy` is not available in Solidity. // solhint-disable no-inline-assembly address private immutable _creationCodeContractA; uint256 private immutable _creationCodeSizeA; address private immutable _creationCodeContractB; uint256 private immutable _creationCodeSizeB; /** * @dev The creation code of a contract Foo can be obtained inside Solidity with `type(Foo).creationCode`. */ constructor(bytes memory creationCode) { uint256 creationCodeSize = creationCode.length; // We are going to deploy two contracts: one with approximately the first half of `creationCode`'s contents // (A), and another with the remaining half (B). // We store the lengths in both immutable and stack variables, since immutable variables cannot be read during // construction. uint256 creationCodeSizeA = creationCodeSize / 2; _creationCodeSizeA = creationCodeSizeA; uint256 creationCodeSizeB = creationCodeSize - creationCodeSizeA; _creationCodeSizeB = creationCodeSizeB; // To deploy the contracts, we're going to use `CodeDeployer.deploy()`, which expects a memory array with // the code to deploy. Note that we cannot simply create arrays for A and B's code by copying or moving // `creationCode`'s contents as they are expected to be very large (> 24kB), so we must operate in-place. // Memory: [ code length ] [ A.data ] [ B.data ] // Creating A's array is simple: we simply replace `creationCode`'s length with A's length. We'll later restore // the original length. bytes memory creationCodeA; assembly { creationCodeA := creationCode mstore(creationCodeA, creationCodeSizeA) } // Memory: [ A.length ] [ A.data ] [ B.data ] // ^ creationCodeA _creationCodeContractA = CodeDeployer.deploy(creationCodeA); // Creating B's array is a bit more involved: since we cannot move B's contents, we are going to create a 'new' // memory array starting at A's last 32 bytes, which will be replaced with B's length. We'll back-up this last // byte to later restore it. bytes memory creationCodeB; bytes32 lastByteA; assembly { // `creationCode` points to the array's length, not data, so by adding A's length to it we arrive at A's // last 32 bytes. creationCodeB := add(creationCode, creationCodeSizeA) lastByteA := mload(creationCodeB) mstore(creationCodeB, creationCodeSizeB) } // Memory: [ A.length ] [ A.data[ : -1] ] [ B.length ][ B.data ] // ^ creationCodeA ^ creationCodeB _creationCodeContractB = CodeDeployer.deploy(creationCodeB); // We now restore the original contents of `creationCode` by writing back the original length and A's last byte. assembly { mstore(creationCodeA, creationCodeSize) mstore(creationCodeB, lastByteA) } } /** * @dev Returns the two addresses where the creation code of the contract crated by this factory is stored. */ function getCreationCodeContracts() public view returns (address contractA, address contractB) { return (_creationCodeContractA, _creationCodeContractB); } /** * @dev Returns the creation code of the contract this factory creates. */ function getCreationCode() public view returns (bytes memory) { return _getCreationCodeWithArgs(''); } /** * @dev Returns the creation code that will result in a contract being deployed with `constructorArgs`. */ function _getCreationCodeWithArgs(bytes memory constructorArgs) private view returns (bytes memory code) { // This function exists because `abi.encode()` cannot be instructed to place its result at a specific address. // We need for the ABI-encoded constructor arguments to be located immediately after the creation code, but // cannot rely on `abi.encodePacked()` to perform concatenation as that would involve copying the creation code, // which would be prohibitively expensive. // Instead, we compute the creation code in a pre-allocated array that is large enough to hold *both* the // creation code and the constructor arguments, and then copy the ABI-encoded arguments (which should not be // overly long) right after the end of the creation code. // Immutable variables cannot be used in assembly, so we store them in the stack first. address creationCodeContractA = _creationCodeContractA; uint256 creationCodeSizeA = _creationCodeSizeA; address creationCodeContractB = _creationCodeContractB; uint256 creationCodeSizeB = _creationCodeSizeB; uint256 creationCodeSize = creationCodeSizeA + creationCodeSizeB; uint256 constructorArgsSize = constructorArgs.length; uint256 codeSize = creationCodeSize + constructorArgsSize; assembly { // First, we allocate memory for `code` by retrieving the free memory pointer and then moving it ahead of // `code` by the size of the creation code plus constructor arguments, and 32 bytes for the array length. code := mload(0x40) mstore(0x40, add(code, add(codeSize, 32))) // We now store the length of the code plus constructor arguments. mstore(code, codeSize) // Next, we concatenate the creation code stored in A and B. let dataStart := add(code, 32) extcodecopy(creationCodeContractA, dataStart, 0, creationCodeSizeA) extcodecopy(creationCodeContractB, add(dataStart, creationCodeSizeA), 0, creationCodeSizeB) } // Finally, we copy the constructorArgs to the end of the array. Unfortunately there is no way to avoid this // copy, as it is not possible to tell Solidity where to store the result of `abi.encode()`. uint256 constructorArgsDataPtr; uint256 constructorArgsCodeDataPtr; assembly { constructorArgsDataPtr := add(constructorArgs, 32) constructorArgsCodeDataPtr := add(add(code, 32), creationCodeSize) } _memcpy(constructorArgsCodeDataPtr, constructorArgsDataPtr, constructorArgsSize); } /** * @dev Deploys a contract with constructor arguments. To create `constructorArgs`, call `abi.encode()` with the * contract's constructor arguments, in order. */ function _create(bytes memory constructorArgs, bytes32 salt) internal virtual returns (address) { bytes memory creationCode = _getCreationCodeWithArgs(constructorArgs); address destination; assembly { destination := create2(0, add(creationCode, 32), mload(creationCode), salt) } if (destination == address(0)) { // Bubble up inner revert reason // solhint-disable-next-line no-inline-assembly assembly { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } } return destination; } // From // https://github.com/Arachnid/solidity-stringutils/blob/b9a6f6615cf18a87a823cbc461ce9e140a61c305/src/strings.sol function _memcpy( uint256 dest, uint256 src, uint256 len ) private pure { // Copy word-length chunks while possible for (; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } // Copy remaining bytes uint256 mask; unchecked { mask = 256**(32 - len) - 1; } assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title KyberSwap v2 factory /// @notice Deploys KyberSwap v2 pools and manages control over government fees interface IFactory { /// @notice Emitted when a pool is created /// @param token0 First pool token by address sort order /// @param token1 Second pool token by address sort order /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units /// @param tickDistance Minimum number of ticks between initialized ticks /// @param pool The address of the created pool event PoolCreated( address indexed token0, address indexed token1, uint24 indexed swapFeeUnits, int24 tickDistance, address pool ); /// @notice Emitted when a new fee is enabled for pool creation via the factory /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units /// @param tickDistance Minimum number of ticks between initialized ticks for pools created with the given fee event SwapFeeEnabled(uint24 indexed swapFeeUnits, int24 indexed tickDistance); /// @notice Emitted when vesting period changes /// @param vestingPeriod The maximum time duration for which LP fees /// are proportionally burnt upon LP removals event VestingPeriodUpdated(uint32 vestingPeriod); /// @notice Emitted when configMaster changes /// @param oldConfigMaster configMaster before the update /// @param newConfigMaster configMaster after the update event ConfigMasterUpdated(address oldConfigMaster, address newConfigMaster); /// @notice Emitted when fee configuration changes /// @param feeTo Recipient of government fees /// @param governmentFeeUnits Fee amount, in fee units, /// to be collected out of the fee charged for a pool swap event FeeConfigurationUpdated(address feeTo, uint24 governmentFeeUnits); /// @notice Emitted when whitelist feature is enabled event WhitelistEnabled(); /// @notice Emitted when whitelist feature is disabled event WhitelistDisabled(); /// @notice Returns the maximum time duration for which LP fees /// are proportionally burnt upon LP removals function vestingPeriod() external view returns (uint32); /// @notice Returns the tick distance for a specified fee. /// @dev Once added, cannot be updated or removed. /// @param swapFeeUnits Swap fee, in fee units. /// @return The tick distance. Returns 0 if fee has not been added. function feeAmountTickDistance(uint24 swapFeeUnits) external view returns (int24); /// @notice Returns the address which can update the fee configuration function configMaster() external view returns (address); /// @notice Returns the keccak256 hash of the Pool creation code /// This is used for pre-computation of pool addresses function poolInitHash() external view returns (bytes32); /// @notice Returns the pool oracle contract for twap function poolOracle() external view returns (address); /// @notice Fetches the recipient of government fees /// and current government fee charged in fee units function feeConfiguration() external view returns (address _feeTo, uint24 _governmentFeeUnits); /// @notice Returns the status of whitelisting feature of NFT managers /// If true, anyone can mint liquidity tokens /// Otherwise, only whitelisted NFT manager(s) are allowed to mint liquidity tokens function whitelistDisabled() external view returns (bool); //// @notice Returns all whitelisted NFT managers /// If the whitelisting feature is turned on, /// only whitelisted NFT manager(s) are allowed to mint liquidity tokens function getWhitelistedNFTManagers() external view returns (address[] memory); /// @notice Checks if sender is a whitelisted NFT manager /// If the whitelisting feature is turned on, /// only whitelisted NFT manager(s) are allowed to mint liquidity tokens /// @param sender address to be checked /// @return true if sender is a whistelisted NFT manager, false otherwise function isWhitelistedNFTManager(address sender) external view returns (bool); /// @notice Returns the pool address for a given pair of tokens and a swap fee /// @dev Token order does not matter /// @param tokenA Contract address of either token0 or token1 /// @param tokenB Contract address of the other token /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units /// @return pool The pool address. Returns null address if it does not exist function getPool( address tokenA, address tokenB, uint24 swapFeeUnits ) external view returns (address pool); /// @notice Fetch parameters to be used for pool creation /// @dev Called by the pool constructor to fetch the parameters of the pool /// @return factory The factory address /// @return poolOracle The pool oracle for twap /// @return token0 First pool token by address sort order /// @return token1 Second pool token by address sort order /// @return swapFeeUnits Fee to be collected upon every swap in the pool, in fee units /// @return tickDistance Minimum number of ticks between initialized ticks function parameters() external view returns ( address factory, address poolOracle, address token0, address token1, uint24 swapFeeUnits, int24 tickDistance ); /// @notice Creates a pool for the given two tokens and fee /// @param tokenA One of the two tokens in the desired pool /// @param tokenB The other of the two tokens in the desired pool /// @param swapFeeUnits Desired swap fee for the pool, in fee units /// @dev Token order does not matter. tickDistance is determined from the fee. /// Call will revert under any of these conditions: /// 1) pool already exists /// 2) invalid swap fee /// 3) invalid token arguments /// @return pool The address of the newly created pool function createPool( address tokenA, address tokenB, uint24 swapFeeUnits ) external returns (address pool); /// @notice Enables a fee amount with the given tickDistance /// @dev Fee amounts may never be removed once enabled /// @param swapFeeUnits The fee amount to enable, in fee units /// @param tickDistance The distance between ticks to be enforced for all pools created with the given fee amount function enableSwapFee(uint24 swapFeeUnits, int24 tickDistance) external; /// @notice Updates the address which can update the fee configuration /// @dev Must be called by the current configMaster function updateConfigMaster(address) external; /// @notice Updates the vesting period /// @dev Must be called by the current configMaster function updateVestingPeriod(uint32) external; /// @notice Updates the address receiving government fees and fee quantity /// @dev Only configMaster is able to perform the update /// @param feeTo Address to receive government fees collected from pools /// @param governmentFeeUnits Fee amount, in fee units, /// to be collected out of the fee charged for a pool swap function updateFeeConfiguration(address feeTo, uint24 governmentFeeUnits) external; /// @notice Enables the whitelisting feature /// @dev Only configMaster is able to perform the update function enableWhitelist() external; /// @notice Disables the whitelisting feature /// @dev Only configMaster is able to perform the update function disableWhitelist() external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IPoolOracle { /// @notice Owner withdrew funds in the pool oracle in case some funds are stuck there event OwnerWithdrew( address indexed owner, address indexed token, uint256 indexed amount ); /// @notice Emitted by the Pool Oracle for increases to the number of observations that can be stored /// @dev observationCardinalityNext is not the observation cardinality until an observation is written at the index /// just before a mint/swap/burn. /// @param pool The pool address to update /// @param observationCardinalityNextOld The previous value of the next observation cardinality /// @param observationCardinalityNextNew The updated value of the next observation cardinality event IncreaseObservationCardinalityNext( address pool, uint16 observationCardinalityNextOld, uint16 observationCardinalityNextNew ); /// @notice Initalize observation data for the caller. function initializeOracle(uint32 time) external returns (uint16 cardinality, uint16 cardinalityNext); /// @notice Write a new oracle entry into the array /// and update the observation index and cardinality /// Read the Oralce.write function for more details function writeNewEntry( uint16 index, uint32 blockTimestamp, int24 tick, uint128 liquidity, uint16 cardinality, uint16 cardinalityNext ) external returns (uint16 indexUpdated, uint16 cardinalityUpdated); /// @notice Write a new oracle entry into the array, take the latest observaion data as inputs /// and update the observation index and cardinality /// Read the Oralce.write function for more details function write( uint32 blockTimestamp, int24 tick, uint128 liquidity ) external returns (uint16 indexUpdated, uint16 cardinalityUpdated); /// @notice Increase the maximum number of price observations that this pool will store /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to /// the input observationCardinalityNext. /// @param pool The pool address to be updated /// @param observationCardinalityNext The desired minimum number of observations for the pool to store function increaseObservationCardinalityNext( address pool, uint16 observationCardinalityNext ) external; /// @notice Returns the accumulator values as of each time seconds ago from the latest block time in the array of `secondsAgos` /// @dev Reverts if `secondsAgos` > oldest observation /// @dev It fetches the latest current tick data from the pool /// Read the Oracle.observe function for more details function observeFromPool( address pool, uint32[] memory secondsAgos ) external view returns (int56[] memory tickCumulatives); /// @notice Returns the accumulator values as the time seconds ago from the latest block time of secondsAgo /// @dev Reverts if `secondsAgo` > oldest observation /// @dev It fetches the latest current tick data from the pool /// Read the Oracle.observeSingle function for more details function observeSingleFromPool( address pool, uint32 secondsAgo ) external view returns (int56 tickCumulative); /// @notice Return the latest pool observation data given the pool address function getPoolObservation(address pool) external view returns (bool initialized, uint16 index, uint16 cardinality, uint16 cardinalityNext); /// @notice Returns data about a specific observation index /// @param pool The pool address of the observations array to fetch /// @param index The element of the observations array to fetch /// @dev You most likely want to use #observe() instead of this method to get an observation as of some amount of time /// ago, rather than at a specific index in the array. /// @return blockTimestamp The timestamp of the observation, /// Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the observation timestamp, /// Returns initialized whether the observation has been initialized and the values are safe to use function getObservationAt(address pool, uint256 index) external view returns ( uint32 blockTimestamp, int56 tickCumulative, bool initialized ); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.9; import {SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import {ERC20} from '@openzeppelin/contracts/token/ERC20/ERC20.sol'; import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import {LiqDeltaMath} from './libraries/LiqDeltaMath.sol'; import {QtyDeltaMath} from './libraries/QtyDeltaMath.sol'; import {MathConstants as C} from './libraries/MathConstants.sol'; import {ReinvestmentMath} from './libraries/ReinvestmentMath.sol'; import {SwapMath} from './libraries/SwapMath.sol'; import {FullMath} from './libraries/FullMath.sol'; import {SafeCast} from './libraries/SafeCast.sol'; import {TickMath} from './libraries/TickMath.sol'; import {IPool} from './interfaces/IPool.sol'; import {IPoolActions} from './interfaces/pool/IPoolActions.sol'; import {IFactory} from './interfaces/IFactory.sol'; import {IMintCallback} from './interfaces/callback/IMintCallback.sol'; import {ISwapCallback} from './interfaces/callback/ISwapCallback.sol'; import {IFlashCallback} from './interfaces/callback/IFlashCallback.sol'; import {PoolTicksState} from './PoolTicksState.sol'; contract Pool is IPool, PoolTicksState, ERC20('KyberSwap v2 Reinvestment Token', 'KS2-RT') { using SafeCast for uint256; using SafeCast for int256; using SafeERC20 for IERC20; constructor() {} /// @dev Get pool's balance of token0 /// Gas saving to avoid a redundant extcodesize check /// in addition to the returndatasize check function _poolBalToken0() private view returns (uint256) { (bool success, bytes memory data) = address(token0).staticcall( abi.encodeWithSelector(IERC20.balanceOf.selector, address(this)) ); require(success && data.length >= 32); return abi.decode(data, (uint256)); } /// @dev Get pool's balance of token1 /// Gas saving to avoid a redundant extcodesize check /// in addition to the returndatasize check function _poolBalToken1() private view returns (uint256) { (bool success, bytes memory data) = address(token1).staticcall( abi.encodeWithSelector(IERC20.balanceOf.selector, address(this)) ); require(success && data.length >= 32); return abi.decode(data, (uint256)); } /// @inheritdoc IPoolActions function unlockPool(uint160 initialSqrtP) external override returns (uint256 qty0, uint256 qty1) { require(poolData.sqrtP == 0, 'already inited'); // initial tick bounds (min & max price limits) are checked in this function int24 initialTick = TickMath.getTickAtSqrtRatio(initialSqrtP); (qty0, qty1) = QtyDeltaMath.calcUnlockQtys(initialSqrtP); // because of price bounds, qty0 and qty1 >= 1 require(qty0 <= _poolBalToken0(), 'lacking qty0'); require(qty1 <= _poolBalToken1(), 'lacking qty1'); _mint(address(this), C.MIN_LIQUIDITY); _initPoolStorage(initialSqrtP, initialTick); emit Initialize(initialSqrtP, initialTick); } /// @dev Make changes to a position /// @param posData the position details and the change to the position's liquidity to effect /// @return qty0 token0 qty owed to the pool, negative if the pool should pay the recipient /// @return qty1 token1 qty owed to the pool, negative if the pool should pay the recipient function _tweakPosition(UpdatePositionData memory posData) private returns ( int256 qty0, int256 qty1, uint256 feeGrowthInsideLast ) { require(posData.tickLower < posData.tickUpper, 'invalid tick range'); require(TickMath.MIN_TICK <= posData.tickLower, 'invalid lower tick'); require(posData.tickUpper <= TickMath.MAX_TICK, 'invalid upper tick'); require( posData.tickLower % tickDistance == 0 && posData.tickUpper % tickDistance == 0, 'tick not in distance' ); // SLOAD variables into memory uint160 sqrtP = poolData.sqrtP; int24 currentTick = poolData.currentTick; uint128 baseL = poolData.baseL; uint128 reinvestL = poolData.reinvestL; CumulativesData memory cumulatives; cumulatives.feeGrowth = _syncFeeGrowth(baseL, reinvestL, poolData.feeGrowthGlobal, true); cumulatives.secondsPerLiquidity = _syncSecondsPerLiquidity( poolData.secondsPerLiquidityGlobal, baseL ); uint256 feesClaimable; (feesClaimable, feeGrowthInsideLast) = _updatePosition(posData, currentTick, cumulatives); if (feesClaimable != 0) _transfer(address(this), posData.owner, feesClaimable); if (currentTick < posData.tickLower) { // current tick < position range // liquidity only comes in range when tick increases // which occurs when pool increases in token1, decreases in token0 // means token0 is appreciating more against token1 // hence user should provide token0 return ( QtyDeltaMath.calcRequiredQty0( TickMath.getSqrtRatioAtTick(posData.tickLower), TickMath.getSqrtRatioAtTick(posData.tickUpper), posData.liquidityDelta, posData.isAddLiquidity ), 0, feeGrowthInsideLast ); } if (currentTick >= posData.tickUpper) { // current tick > position range // liquidity only comes in range when tick decreases // which occurs when pool decreases in token1, increases in token0 // means token1 is appreciating more against token0 // hence user should provide token1 return ( 0, QtyDeltaMath.calcRequiredQty1( TickMath.getSqrtRatioAtTick(posData.tickLower), TickMath.getSqrtRatioAtTick(posData.tickUpper), posData.liquidityDelta, posData.isAddLiquidity ), feeGrowthInsideLast ); } // write an oracle entry poolOracle.write(_blockTimestamp(), currentTick, baseL); // current tick is inside the passed range qty0 = QtyDeltaMath.calcRequiredQty0( sqrtP, TickMath.getSqrtRatioAtTick(posData.tickUpper), posData.liquidityDelta, posData.isAddLiquidity ); qty1 = QtyDeltaMath.calcRequiredQty1( TickMath.getSqrtRatioAtTick(posData.tickLower), sqrtP, posData.liquidityDelta, posData.isAddLiquidity ); // in addition, add liquidityDelta to current poolData.baseL // since liquidity is in range poolData.baseL = LiqDeltaMath.applyLiquidityDelta( baseL, posData.liquidityDelta, posData.isAddLiquidity ); } /// @inheritdoc IPoolActions function mint( address recipient, int24 tickLower, int24 tickUpper, int24[2] calldata ticksPrevious, uint128 qty, bytes calldata data ) external override lock returns ( uint256 qty0, uint256 qty1, uint256 feeGrowthInsideLast ) { require(qty != 0, '0 qty'); require(factory.isWhitelistedNFTManager(msg.sender), 'forbidden'); int256 qty0Int; int256 qty1Int; (qty0Int, qty1Int, feeGrowthInsideLast) = _tweakPosition( UpdatePositionData({ owner: recipient, tickLower: tickLower, tickUpper: tickUpper, tickLowerPrevious: ticksPrevious[0], tickUpperPrevious: ticksPrevious[1], liquidityDelta: qty, isAddLiquidity: true }) ); qty0 = uint256(qty0Int); qty1 = uint256(qty1Int); uint256 balance0Before; uint256 balance1Before; if (qty0 > 0) balance0Before = _poolBalToken0(); if (qty1 > 0) balance1Before = _poolBalToken1(); IMintCallback(msg.sender).mintCallback(qty0, qty1, data); if (qty0 > 0) require(balance0Before + qty0 <= _poolBalToken0(), 'lacking qty0'); if (qty1 > 0) require(balance1Before + qty1 <= _poolBalToken1(), 'lacking qty1'); emit Mint(msg.sender, recipient, tickLower, tickUpper, qty, qty0, qty1); } /// @inheritdoc IPoolActions function burn( int24 tickLower, int24 tickUpper, uint128 qty ) external override lock returns ( uint256 qty0, uint256 qty1, uint256 feeGrowthInsideLast ) { require(qty != 0, '0 qty'); int256 qty0Int; int256 qty1Int; (qty0Int, qty1Int, feeGrowthInsideLast) = _tweakPosition( UpdatePositionData({ owner: msg.sender, tickLower: tickLower, tickUpper: tickUpper, tickLowerPrevious: 0, // no use as there is no insertion tickUpperPrevious: 0, // no use as there is no insertion liquidityDelta: qty, isAddLiquidity: false }) ); if (qty0Int < 0) { qty0 = qty0Int.revToUint256(); token0.safeTransfer(msg.sender, qty0); } if (qty1Int < 0) { qty1 = qty1Int.revToUint256(); token1.safeTransfer(msg.sender, qty1); } emit Burn(msg.sender, tickLower, tickUpper, qty, qty0, qty1); } /// @inheritdoc IPoolActions function burnRTokens(uint256 _qty, bool isLogicalBurn) external override lock returns (uint256 qty0, uint256 qty1) { if (isLogicalBurn) { _burn(msg.sender, _qty); emit BurnRTokens(msg.sender, _qty, 0, 0); return (0, 0); } // SLOADs for gas optimizations uint128 baseL = poolData.baseL; uint128 reinvestL = poolData.reinvestL; uint160 sqrtP = poolData.sqrtP; _syncFeeGrowth(baseL, reinvestL, poolData.feeGrowthGlobal, false); // totalSupply() is the reinvestment token supply after syncing, but before burning uint256 deltaL = FullMath.mulDivFloor(_qty, reinvestL, totalSupply()); reinvestL = reinvestL - deltaL.toUint128(); poolData.reinvestL = reinvestL; poolData.reinvestLLast = reinvestL; // finally, calculate and send token quantities to user qty0 = QtyDeltaMath.getQty0FromBurnRTokens(sqrtP, deltaL); qty1 = QtyDeltaMath.getQty1FromBurnRTokens(sqrtP, deltaL); _burn(msg.sender, _qty); if (qty0 > 0) token0.safeTransfer(msg.sender, qty0); if (qty1 > 0) token1.safeTransfer(msg.sender, qty1); emit BurnRTokens(msg.sender, _qty, qty0, qty1); } // temporary swap variables, some of which will be used to update the pool state struct SwapData { int256 specifiedAmount; // the specified amount (could be tokenIn or tokenOut) int256 returnedAmount; // the opposite amout of sourceQty uint160 sqrtP; // current sqrt(price), multiplied by 2^96 int24 currentTick; // the tick associated with the current price int24 nextTick; // the next initialized tick uint160 nextSqrtP; // the price of nextTick bool isToken0; // true if specifiedAmount is in token0, false if in token1 bool isExactInput; // true = input qty, false = output qty uint128 baseL; // the cached base pool liquidity without reinvestment liquidity uint128 reinvestL; // the cached reinvestment liquidity uint160 startSqrtP; // the start sqrt price before each iteration } // variables below are loaded only when crossing a tick struct SwapCache { uint256 rTotalSupply; // cache of total reinvestment token supply uint128 reinvestLLast; // collected liquidity uint256 feeGrowthGlobal; // cache of fee growth of the reinvestment token, multiplied by 2^96 uint128 secondsPerLiquidityGlobal; // all-time seconds per liquidity, multiplied by 2^96 address feeTo; // recipient of govt fees uint24 governmentFeeUnits; // governmentFeeUnits to be charged uint256 governmentFee; // qty of reinvestment token for government fee uint256 lpFee; // qty of reinvestment token for liquidity provider } struct OracleCache { int24 currentTick; uint128 baseL; } // @inheritdoc IPoolActions function swap( address recipient, int256 swapQty, bool isToken0, uint160 limitSqrtP, bytes calldata data ) external override lock returns (int256 deltaQty0, int256 deltaQty1) { require(swapQty != 0, '0 swapQty'); SwapData memory swapData; swapData.specifiedAmount = swapQty; swapData.isToken0 = isToken0; swapData.isExactInput = swapData.specifiedAmount > 0; // tick (token1Qty/token0Qty) will increase for swapping from token1 to token0 bool willUpTick = (swapData.isExactInput != isToken0); ( swapData.baseL, swapData.reinvestL, swapData.sqrtP, swapData.currentTick, swapData.nextTick ) = _getInitialSwapData(willUpTick); // cache data before swap to write into oracle if needed OracleCache memory oracleCache = OracleCache({ currentTick: swapData.currentTick, baseL: swapData.baseL }); // verify limitSqrtP if (willUpTick) { require( limitSqrtP > swapData.sqrtP && limitSqrtP < TickMath.MAX_SQRT_RATIO, 'bad limitSqrtP' ); } else { require( limitSqrtP < swapData.sqrtP && limitSqrtP > TickMath.MIN_SQRT_RATIO, 'bad limitSqrtP' ); } SwapCache memory cache; // continue swapping while specified input/output isn't satisfied or price limit not reached while (swapData.specifiedAmount != 0 && swapData.sqrtP != limitSqrtP) { // math calculations work with the assumption that the price diff is capped to 5% // since tick distance is uncapped between currentTick and nextTick // we use tempNextTick to satisfy our assumption with MAX_TICK_DISTANCE is set to be matched this condition int24 tempNextTick = swapData.nextTick; if (willUpTick && tempNextTick > C.MAX_TICK_DISTANCE + swapData.currentTick) { tempNextTick = swapData.currentTick + C.MAX_TICK_DISTANCE; } else if (!willUpTick && tempNextTick < swapData.currentTick - C.MAX_TICK_DISTANCE) { tempNextTick = swapData.currentTick - C.MAX_TICK_DISTANCE; } swapData.startSqrtP = swapData.sqrtP; swapData.nextSqrtP = TickMath.getSqrtRatioAtTick(tempNextTick); // local scope for targetSqrtP, usedAmount, returnedAmount and deltaL { uint160 targetSqrtP = swapData.nextSqrtP; // ensure next sqrtP (and its corresponding tick) does not exceed price limit if (willUpTick == (swapData.nextSqrtP > limitSqrtP)) { targetSqrtP = limitSqrtP; } int256 usedAmount; int256 returnedAmount; uint256 deltaL; (usedAmount, returnedAmount, deltaL, swapData.sqrtP) = SwapMath.computeSwapStep( swapData.baseL + swapData.reinvestL, swapData.sqrtP, targetSqrtP, swapFeeUnits, swapData.specifiedAmount, swapData.isExactInput, swapData.isToken0 ); swapData.specifiedAmount -= usedAmount; swapData.returnedAmount += returnedAmount; swapData.reinvestL += deltaL.toUint128(); } // if price has not reached the next sqrt price if (swapData.sqrtP != swapData.nextSqrtP) { if (swapData.sqrtP != swapData.startSqrtP) { // update the current tick data in case the sqrtP has changed swapData.currentTick = TickMath.getTickAtSqrtRatio(swapData.sqrtP); } break; } swapData.currentTick = willUpTick ? tempNextTick : tempNextTick - 1; // if tempNextTick is not next initialized tick if (tempNextTick != swapData.nextTick) continue; if (cache.rTotalSupply == 0) { // load variables that are only initialized when crossing a tick cache.rTotalSupply = totalSupply(); cache.reinvestLLast = poolData.reinvestLLast; cache.feeGrowthGlobal = poolData.feeGrowthGlobal; cache.secondsPerLiquidityGlobal = _syncSecondsPerLiquidity( poolData.secondsPerLiquidityGlobal, swapData.baseL ); (cache.feeTo, cache.governmentFeeUnits) = factory.feeConfiguration(); } // update rTotalSupply, feeGrowthGlobal and reinvestL uint256 rMintQty = ReinvestmentMath.calcrMintQty( swapData.reinvestL, cache.reinvestLLast, swapData.baseL, cache.rTotalSupply ); if (rMintQty != 0) { cache.rTotalSupply += rMintQty; // overflow/underflow not possible bc governmentFeeUnits < 20000 unchecked { uint256 governmentFee = (rMintQty * cache.governmentFeeUnits) / C.FEE_UNITS; cache.governmentFee += governmentFee; uint256 lpFee = rMintQty - governmentFee; cache.lpFee += lpFee; cache.feeGrowthGlobal += FullMath.mulDivFloor(lpFee, C.TWO_POW_96, swapData.baseL); } } cache.reinvestLLast = swapData.reinvestL; (swapData.baseL, swapData.nextTick) = _updateLiquidityAndCrossTick( swapData.nextTick, swapData.baseL, cache.feeGrowthGlobal, cache.secondsPerLiquidityGlobal, willUpTick ); } // if the swap crosses at least 1 initalized tick if (cache.rTotalSupply != 0) { if (cache.governmentFee > 0) _mint(cache.feeTo, cache.governmentFee); if (cache.lpFee > 0) _mint(address(this), cache.lpFee); poolData.reinvestLLast = cache.reinvestLLast; poolData.feeGrowthGlobal = cache.feeGrowthGlobal; } // write an oracle entry if tick changed if (swapData.currentTick != oracleCache.currentTick) { poolOracle.write(_blockTimestamp(), oracleCache.currentTick, oracleCache.baseL); } _updatePoolData( swapData.baseL, swapData.reinvestL, swapData.sqrtP, swapData.currentTick, swapData.nextTick ); (deltaQty0, deltaQty1) = isToken0 ? (swapQty - swapData.specifiedAmount, swapData.returnedAmount) : (swapData.returnedAmount, swapQty - swapData.specifiedAmount); // handle token transfers and perform callback if (willUpTick) { // outbound deltaQty0 (negative), inbound deltaQty1 (positive) // transfer deltaQty0 to recipient if (deltaQty0 < 0) token0.safeTransfer(recipient, deltaQty0.revToUint256()); // collect deltaQty1 uint256 balance1Before = _poolBalToken1(); ISwapCallback(msg.sender).swapCallback(deltaQty0, deltaQty1, data); require(_poolBalToken1() >= balance1Before + uint256(deltaQty1), 'lacking deltaQty1'); } else { // inbound deltaQty0 (positive), outbound deltaQty1 (negative) // transfer deltaQty1 to recipient if (deltaQty1 < 0) token1.safeTransfer(recipient, deltaQty1.revToUint256()); // collect deltaQty0 uint256 balance0Before = _poolBalToken0(); ISwapCallback(msg.sender).swapCallback(deltaQty0, deltaQty1, data); require(_poolBalToken0() >= balance0Before + uint256(deltaQty0), 'lacking deltaQty0'); } emit Swap( msg.sender, recipient, deltaQty0, deltaQty1, swapData.sqrtP, swapData.baseL, swapData.currentTick ); } /// @inheritdoc IPoolActions function flash( address recipient, uint256 qty0, uint256 qty1, bytes calldata data ) external override lock { // send all collected fees to feeTo (address feeTo, ) = factory.feeConfiguration(); uint256 feeQty0; uint256 feeQty1; if (feeTo != address(0)) { feeQty0 = (qty0 * swapFeeUnits) / C.FEE_UNITS; feeQty1 = (qty1 * swapFeeUnits) / C.FEE_UNITS; } uint256 balance0Before = _poolBalToken0(); uint256 balance1Before = _poolBalToken1(); if (qty0 > 0) token0.safeTransfer(recipient, qty0); if (qty1 > 0) token1.safeTransfer(recipient, qty1); IFlashCallback(msg.sender).flashCallback(feeQty0, feeQty1, data); uint256 balance0After = _poolBalToken0(); uint256 balance1After = _poolBalToken1(); require(balance0Before + feeQty0 <= balance0After, 'lacking feeQty0'); require(balance1Before + feeQty1 <= balance1After, 'lacking feeQty1'); uint256 paid0; uint256 paid1; unchecked { paid0 = balance0After - balance0Before; paid1 = balance1After - balance1Before; } if (paid0 > 0) token0.safeTransfer(feeTo, paid0); if (paid1 > 0) token1.safeTransfer(feeTo, paid1); emit Flash(msg.sender, recipient, qty0, qty1, paid0, paid1); } /// @dev sync the value of secondsPerLiquidity data to current block.timestamp /// @return new value of _secondsPerLiquidityGlobal function _syncSecondsPerLiquidity(uint128 _secondsPerLiquidityGlobal, uint128 baseL) internal returns (uint128) { uint256 secondsElapsed = _blockTimestamp() - poolData.secondsPerLiquidityUpdateTime; // update secondsPerLiquidityGlobal and secondsPerLiquidityUpdateTime if needed if (secondsElapsed > 0) { poolData.secondsPerLiquidityUpdateTime = _blockTimestamp(); if (baseL > 0) { _secondsPerLiquidityGlobal += uint128((secondsElapsed << C.RES_96) / baseL); // write to storage poolData.secondsPerLiquidityGlobal = _secondsPerLiquidityGlobal; } } return _secondsPerLiquidityGlobal; } function tweakPosZeroLiq(int24 tickLower, int24 tickUpper) external override lock returns (uint256 feeGrowthInsideLast) { require(factory.isWhitelistedNFTManager(msg.sender), 'forbidden'); require(tickLower < tickUpper, 'invalid tick range'); require(TickMath.MIN_TICK <= tickLower, 'invalid lower tick'); require(tickUpper <= TickMath.MAX_TICK, 'invalid upper tick'); require( tickLower % tickDistance == 0 && tickUpper % tickDistance == 0, 'tick not in distance' ); bytes32 key = _positionKey(msg.sender, tickLower, tickUpper); require(positions[key].liquidity > 0, 'invalid position'); // SLOAD variables into memory uint128 baseL = poolData.baseL; CumulativesData memory cumulatives; cumulatives.feeGrowth = _syncFeeGrowth(baseL, poolData.reinvestL, poolData.feeGrowthGlobal, true); cumulatives.secondsPerLiquidity = _syncSecondsPerLiquidity( poolData.secondsPerLiquidityGlobal, baseL ); uint256 feesClaimable; (feesClaimable, feeGrowthInsideLast) = _updatePosition( UpdatePositionData({ owner: msg.sender, tickLower: tickLower, tickUpper: tickUpper, tickLowerPrevious: 0, tickUpperPrevious: 0, liquidityDelta: 0, isAddLiquidity: false }) , poolData.currentTick, cumulatives); if (feesClaimable != 0) _transfer(address(this), msg.sender, feesClaimable); } /// @dev sync the value of feeGrowthGlobal and the value of each reinvestment token. /// @dev update reinvestLLast to latest value if necessary /// @return the lastest value of _feeGrowthGlobal function _syncFeeGrowth( uint128 baseL, uint128 reinvestL, uint256 _feeGrowthGlobal, bool updateReinvestLLast ) internal returns (uint256) { uint256 rMintQty = ReinvestmentMath.calcrMintQty( uint256(reinvestL), uint256(poolData.reinvestLLast), baseL, totalSupply() ); if (rMintQty != 0) { rMintQty = _deductGovermentFee(rMintQty); _mint(address(this), rMintQty); // baseL != 0 because baseL = 0 => rMintQty = 0 unchecked { _feeGrowthGlobal += FullMath.mulDivFloor(rMintQty, C.TWO_POW_96, baseL); } poolData.feeGrowthGlobal = _feeGrowthGlobal; } // update poolData.reinvestLLast if required if (updateReinvestLLast) poolData.reinvestLLast = reinvestL; return _feeGrowthGlobal; } /// @return the lp fee without governance fee function _deductGovermentFee(uint256 rMintQty) internal returns (uint256) { // fetch governmentFeeUnits (address feeTo, uint24 governmentFeeUnits) = factory.feeConfiguration(); if (governmentFeeUnits == 0) { return rMintQty; } // unchecked due to governmentFeeUnits <= 20000 unchecked { uint256 rGovtQty = (rMintQty * governmentFeeUnits) / C.FEE_UNITS; if (rGovtQty != 0) { _mint(feeTo, rGovtQty); } return rMintQty - rGovtQty; } } }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; // Taken from BalancerV2. Only modification made is changing the require statement // for a failed deployment to an assert statement library CodeDeployer { // During contract construction, the full code supplied exists as code, and can be accessed via `codesize` and // `codecopy`. This is not the contract's final code however: whatever the constructor returns is what will be // stored as its code. // // We use this mechanism to have a simple constructor that stores whatever is appended to it. The following opcode // sequence corresponds to the creation code of the following equivalent Solidity contract, plus padding to make the // full code 32 bytes long: // // contract CodeDeployer { // constructor() payable { // uint256 size; // assembly { // size := sub(codesize(), 32) // size of appended data, as constructor is 32 bytes long // codecopy(0, 32, size) // copy all appended data to memory at position 0 // return(0, size) // return appended data for it to be stored as code // } // } // } // // More specifically, it is composed of the following opcodes (plus padding): // // [1] PUSH1 0x20 // [2] CODESIZE // [3] SUB // [4] DUP1 // [6] PUSH1 0x20 // [8] PUSH1 0x00 // [9] CODECOPY // [11] PUSH1 0x00 // [12] RETURN // // The padding is just the 0xfe sequence (invalid opcode). bytes32 private constant _DEPLOYER_CREATION_CODE = 0x602038038060206000396000f3fefefefefefefefefefefefefefefefefefefe; /** * @dev Deploys a contract with `code` as its code, returning the destination address. * Asserts that contract deployment is successful */ function deploy(bytes memory code) internal returns (address destination) { bytes32 deployerCreationCode = _DEPLOYER_CREATION_CODE; // solhint-disable-next-line no-inline-assembly assembly { let codeLength := mload(code) // `code` is composed of length and data. We've already stored its length in `codeLength`, so we simply // replace it with the deployer creation code (which is exactly 32 bytes long). mstore(code, deployerCreationCode) // At this point, `code` now points to the deployer creation code immediately followed by `code`'s data // contents. This is exactly what the deployer expects to receive when created. destination := create(0, code, add(codeLength, 32)) // Finally, we restore the original length in order to not mutate `code`. mstore(code, codeLength) } // create opcode returns null address for failed contract creation instances // hence, assert that the resulting address is not null assert(destination != address(0)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `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); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `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); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(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: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @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 >=0.8.0; /// @title Contains helper function to add or remove uint128 liquidityDelta to uint128 liquidity library LiqDeltaMath { function applyLiquidityDelta( uint128 liquidity, uint128 liquidityDelta, bool isAddLiquidity ) internal pure returns (uint128) { return isAddLiquidity ? liquidity + liquidityDelta : liquidity - liquidityDelta; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import {MathConstants as C} from './MathConstants.sol'; import {TickMath} from './TickMath.sol'; import {FullMath} from './FullMath.sol'; import {SafeCast} from './SafeCast.sol'; /// @title Contains helper functions for calculating /// token0 and token1 quantites from differences in prices /// or from burning reinvestment tokens library QtyDeltaMath { using SafeCast for uint256; using SafeCast for int128; function calcUnlockQtys(uint160 initialSqrtP) internal pure returns (uint256 qty0, uint256 qty1) { qty0 = FullMath.mulDivCeiling(C.MIN_LIQUIDITY, C.TWO_POW_96, initialSqrtP); qty1 = FullMath.mulDivCeiling(C.MIN_LIQUIDITY, initialSqrtP, C.TWO_POW_96); } /// @notice Gets the qty0 delta between two prices /// @dev Calculates liquidity / sqrt(lower) - liquidity / sqrt(upper), /// i.e. liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower)) /// rounds up if adding liquidity, rounds down if removing liquidity /// @param lowerSqrtP The lower sqrt price. /// @param upperSqrtP The upper sqrt price. Should be >= lowerSqrtP /// @param liquidity Liquidity quantity /// @param isAddLiquidity true = add liquidity, false = remove liquidity /// @return token0 qty required for position with liquidity between the 2 sqrt prices function calcRequiredQty0( uint160 lowerSqrtP, uint160 upperSqrtP, uint128 liquidity, bool isAddLiquidity ) internal pure returns (int256) { uint256 numerator1 = uint256(liquidity) << C.RES_96; uint256 numerator2; unchecked { numerator2 = upperSqrtP - lowerSqrtP; } return isAddLiquidity ? (divCeiling(FullMath.mulDivCeiling(numerator1, numerator2, upperSqrtP), lowerSqrtP)) .toInt256() : (FullMath.mulDivFloor(numerator1, numerator2, upperSqrtP) / lowerSqrtP).revToInt256(); } /// @notice Gets the token1 delta quantity between two prices /// @dev Calculates liquidity * (sqrt(upper) - sqrt(lower)) /// rounds up if adding liquidity, rounds down if removing liquidity /// @param lowerSqrtP The lower sqrt price. /// @param upperSqrtP The upper sqrt price. Should be >= lowerSqrtP /// @param liquidity Liquidity quantity /// @param isAddLiquidity true = add liquidity, false = remove liquidity /// @return token1 qty required for position with liquidity between the 2 sqrt prices function calcRequiredQty1( uint160 lowerSqrtP, uint160 upperSqrtP, uint128 liquidity, bool isAddLiquidity ) internal pure returns (int256) { unchecked { return isAddLiquidity ? (FullMath.mulDivCeiling(liquidity, upperSqrtP - lowerSqrtP, C.TWO_POW_96)).toInt256() : (FullMath.mulDivFloor(liquidity, upperSqrtP - lowerSqrtP, C.TWO_POW_96)).revToInt256(); } } /// @notice Calculates the token0 quantity proportion to be sent to the user /// for burning reinvestment tokens /// @param sqrtP Current pool sqrt price /// @param liquidity Difference in reinvestment liquidity due to reinvestment token burn /// @return token0 quantity to be sent to the user function getQty0FromBurnRTokens(uint160 sqrtP, uint256 liquidity) internal pure returns (uint256) { return FullMath.mulDivFloor(liquidity, C.TWO_POW_96, sqrtP); } /// @notice Calculates the token1 quantity proportion to be sent to the user /// for burning reinvestment tokens /// @param sqrtP Current pool sqrt price /// @param liquidity Difference in reinvestment liquidity due to reinvestment token burn /// @return token1 quantity to be sent to the user function getQty1FromBurnRTokens(uint160 sqrtP, uint256 liquidity) internal pure returns (uint256) { return FullMath.mulDivFloor(liquidity, sqrtP, C.TWO_POW_96); } /// @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 divCeiling(uint256 x, uint256 y) internal pure returns (uint256 z) { // return x / y + ((x % y == 0) ? 0 : 1); require(y > 0); assembly { z := add(div(x, y), gt(mod(x, y), 0)) } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import {MathConstants as C} from './MathConstants.sol'; import {FullMath} from './FullMath.sol'; /// @title Contains helper function to calculate the number of reinvestment tokens to be minted library ReinvestmentMath { /// @dev calculate the mint amount with given reinvestL, reinvestLLast, baseL and rTotalSupply /// contribution of lp to the increment is calculated by the proportion of baseL with reinvestL + baseL /// then rMintQty is calculated by mutiplying this with the liquidity per reinvestment token /// rMintQty = rTotalSupply * (reinvestL - reinvestLLast) / reinvestLLast * baseL / (baseL + reinvestL) function calcrMintQty( uint256 reinvestL, uint256 reinvestLLast, uint128 baseL, uint256 rTotalSupply ) internal pure returns (uint256 rMintQty) { uint256 lpContribution = FullMath.mulDivFloor( baseL, reinvestL - reinvestLLast, baseL + reinvestL ); rMintQty = FullMath.mulDivFloor(rTotalSupply, lpContribution, reinvestLLast); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import {MathConstants as C} from './MathConstants.sol'; import {FullMath} from './FullMath.sol'; import {QuadMath} from './QuadMath.sol'; import {SafeCast} from './SafeCast.sol'; /// @title Contains helper functions for swaps library SwapMath { using SafeCast for uint256; using SafeCast for int256; /// @dev Computes the actual swap input / output amounts to be deducted or added, /// the swap fee to be collected and the resulting sqrtP. /// @notice nextSqrtP should not exceed targetSqrtP. /// @param liquidity active base liquidity + reinvest liquidity /// @param currentSqrtP current sqrt price /// @param targetSqrtP sqrt price limit the new sqrt price can take /// @param feeInFeeUnits swap fee in basis points /// @param specifiedAmount the amount remaining to be used for the swap /// @param isExactInput true if specifiedAmount refers to input amount, false if specifiedAmount refers to output amount /// @param isToken0 true if specifiedAmount is in token0, false if specifiedAmount is in token1 /// @return usedAmount actual amount to be used for the swap /// @return returnedAmount output qty to be accumulated if isExactInput = true, input qty if isExactInput = false /// @return deltaL collected swap fee, to be incremented to reinvest liquidity /// @return nextSqrtP the new sqrt price after the computed swap step function computeSwapStep( uint256 liquidity, uint160 currentSqrtP, uint160 targetSqrtP, uint256 feeInFeeUnits, int256 specifiedAmount, bool isExactInput, bool isToken0 ) internal pure returns ( int256 usedAmount, int256 returnedAmount, uint256 deltaL, uint160 nextSqrtP ) { // in the event currentSqrtP == targetSqrtP because of tick movements, return // eg. swapped up tick where specified price limit is on an initialised tick // then swapping down tick will cause next tick to be the same as the current tick if (currentSqrtP == targetSqrtP) return (0, 0, 0, currentSqrtP); usedAmount = calcReachAmount( liquidity, currentSqrtP, targetSqrtP, feeInFeeUnits, isExactInput, isToken0 ); if ( (isExactInput && usedAmount > specifiedAmount) || (!isExactInput && usedAmount <= specifiedAmount) ) { usedAmount = specifiedAmount; } else { nextSqrtP = targetSqrtP; } uint256 absDelta = usedAmount >= 0 ? uint256(usedAmount) : usedAmount.revToUint256(); if (nextSqrtP == 0) { deltaL = estimateIncrementalLiquidity( absDelta, liquidity, currentSqrtP, feeInFeeUnits, isExactInput, isToken0 ); nextSqrtP = calcFinalPrice(absDelta, liquidity, deltaL, currentSqrtP, isExactInput, isToken0) .toUint160(); } else { deltaL = calcIncrementalLiquidity( absDelta, liquidity, currentSqrtP, nextSqrtP, isExactInput, isToken0 ); } returnedAmount = calcReturnedAmount( liquidity, currentSqrtP, nextSqrtP, deltaL, isExactInput, isToken0 ); } /// @dev calculates the amount needed to reach targetSqrtP from currentSqrtP /// @dev we cast currentSqrtP and targetSqrtP to uint256 as they are multiplied by TWO_FEE_UNITS or feeInFeeUnits function calcReachAmount( uint256 liquidity, uint256 currentSqrtP, uint256 targetSqrtP, uint256 feeInFeeUnits, bool isExactInput, bool isToken0 ) internal pure returns (int256 reachAmount) { uint256 absPriceDiff; unchecked { absPriceDiff = (currentSqrtP >= targetSqrtP) ? (currentSqrtP - targetSqrtP) : (targetSqrtP - currentSqrtP); } if (isExactInput) { // we round down so that we avoid taking giving away too much for the specified input // ie. require less input qty to move ticks if (isToken0) { // numerator = 2 * liquidity * absPriceDiff // denominator = currentSqrtP * (2 * targetSqrtP - currentSqrtP * feeInFeeUnits / FEE_UNITS) // overflow should not happen because the absPriceDiff is capped to ~5% uint256 denominator = C.TWO_FEE_UNITS * targetSqrtP - feeInFeeUnits * currentSqrtP; uint256 numerator = FullMath.mulDivFloor( liquidity, C.TWO_FEE_UNITS * absPriceDiff, denominator ); reachAmount = FullMath.mulDivFloor(numerator, C.TWO_POW_96, currentSqrtP).toInt256(); } else { // numerator = 2 * liquidity * absPriceDiff * currentSqrtP // denominator = 2 * currentSqrtP - targetSqrtP * feeInFeeUnits / FEE_UNITS // overflow should not happen because the absPriceDiff is capped to ~5% uint256 denominator = C.TWO_FEE_UNITS * currentSqrtP - feeInFeeUnits * targetSqrtP; uint256 numerator = FullMath.mulDivFloor( liquidity, C.TWO_FEE_UNITS * absPriceDiff, denominator ); reachAmount = FullMath.mulDivFloor(numerator, currentSqrtP, C.TWO_POW_96).toInt256(); } } else { // we will perform negation as the last step // we round down so that we require less output qty to move ticks if (isToken0) { // numerator: (liquidity)(absPriceDiff)(2 * currentSqrtP - deltaL * (currentSqrtP + targetSqrtP)) // denominator: (currentSqrtP * targetSqrtP) * (2 * currentSqrtP - deltaL * targetSqrtP) // overflow should not happen because the absPriceDiff is capped to ~5% uint256 denominator = C.TWO_FEE_UNITS * currentSqrtP - feeInFeeUnits * targetSqrtP; uint256 numerator = denominator - feeInFeeUnits * currentSqrtP; numerator = FullMath.mulDivFloor(liquidity << C.RES_96, numerator, denominator); reachAmount = (FullMath.mulDivFloor(numerator, absPriceDiff, currentSqrtP) / targetSqrtP) .revToInt256(); } else { // numerator: liquidity * absPriceDiff * (TWO_FEE_UNITS * targetSqrtP - feeInFeeUnits * (targetSqrtP + currentSqrtP)) // denominator: (TWO_FEE_UNITS * targetSqrtP - feeInFeeUnits * currentSqrtP) // overflow should not happen because the absPriceDiff is capped to ~5% uint256 denominator = C.TWO_FEE_UNITS * targetSqrtP - feeInFeeUnits * currentSqrtP; uint256 numerator = denominator - feeInFeeUnits * targetSqrtP; numerator = FullMath.mulDivFloor(liquidity, numerator, denominator); reachAmount = FullMath.mulDivFloor(numerator, absPriceDiff, C.TWO_POW_96).revToInt256(); } } } /// @dev estimates deltaL, the swap fee to be collected based on amount specified /// for the final swap step to be performed, /// where the next (temporary) tick will not be crossed function estimateIncrementalLiquidity( uint256 absDelta, uint256 liquidity, uint160 currentSqrtP, uint256 feeInFeeUnits, bool isExactInput, bool isToken0 ) internal pure returns (uint256 deltaL) { if (isExactInput) { if (isToken0) { // deltaL = feeInFeeUnits * absDelta * currentSqrtP / 2 deltaL = FullMath.mulDivFloor( currentSqrtP, absDelta * feeInFeeUnits, C.TWO_FEE_UNITS << C.RES_96 ); } else { // deltaL = feeInFeeUnits * absDelta * / (currentSqrtP * 2) // Because nextSqrtP = (liquidity + absDelta / currentSqrtP) * currentSqrtP / (liquidity + deltaL) // so we round up deltaL, to round down nextSqrtP deltaL = FullMath.mulDivFloor( C.TWO_POW_96, absDelta * feeInFeeUnits, C.TWO_FEE_UNITS * currentSqrtP ); } } else { // obtain the smaller root of the quadratic equation // ax^2 - 2bx + c = 0 such that b > 0, and x denotes deltaL uint256 a = feeInFeeUnits; uint256 b = (C.FEE_UNITS - feeInFeeUnits) * liquidity; uint256 c = feeInFeeUnits * liquidity * absDelta; if (isToken0) { // a = feeInFeeUnits // b = (FEE_UNITS - feeInFeeUnits) * liquidity - FEE_UNITS * absDelta * currentSqrtP // c = feeInFeeUnits * liquidity * absDelta * currentSqrtP b -= FullMath.mulDivFloor(C.FEE_UNITS * absDelta, currentSqrtP, C.TWO_POW_96); c = FullMath.mulDivFloor(c, currentSqrtP, C.TWO_POW_96); } else { // a = feeInFeeUnits // b = (FEE_UNITS - feeInFeeUnits) * liquidity - FEE_UNITS * absDelta / currentSqrtP // c = liquidity * feeInFeeUnits * absDelta / currentSqrtP b -= FullMath.mulDivFloor(C.FEE_UNITS * absDelta, C.TWO_POW_96, currentSqrtP); c = FullMath.mulDivFloor(c, C.TWO_POW_96, currentSqrtP); } deltaL = QuadMath.getSmallerRootOfQuadEqn(a, b, c); } } /// @dev calculates deltaL, the swap fee to be collected for an intermediate swap step, /// where the next (temporary) tick will be crossed function calcIncrementalLiquidity( uint256 absDelta, uint256 liquidity, uint160 currentSqrtP, uint160 nextSqrtP, bool isExactInput, bool isToken0 ) internal pure returns (uint256 deltaL) { if (isToken0) { // deltaL = nextSqrtP * (liquidity / currentSqrtP +/- absDelta)) - liquidity // needs to be minimum uint256 tmp1 = FullMath.mulDivFloor(liquidity, C.TWO_POW_96, currentSqrtP); uint256 tmp2 = isExactInput ? tmp1 + absDelta : tmp1 - absDelta; uint256 tmp3 = FullMath.mulDivFloor(nextSqrtP, tmp2, C.TWO_POW_96); // in edge cases where liquidity or absDelta is small // liquidity might be greater than nextSqrtP * ((liquidity / currentSqrtP) +/- absDelta)) // due to rounding deltaL = (tmp3 > liquidity) ? tmp3 - liquidity : 0; } else { // deltaL = (liquidity * currentSqrtP +/- absDelta) / nextSqrtP - liquidity // needs to be minimum uint256 tmp1 = FullMath.mulDivFloor(liquidity, currentSqrtP, C.TWO_POW_96); uint256 tmp2 = isExactInput ? tmp1 + absDelta : tmp1 - absDelta; uint256 tmp3 = FullMath.mulDivFloor(tmp2, C.TWO_POW_96, nextSqrtP); // in edge cases where liquidity or absDelta is small // liquidity might be greater than nextSqrtP * ((liquidity / currentSqrtP) +/- absDelta)) // due to rounding deltaL = (tmp3 > liquidity) ? tmp3 - liquidity : 0; } } /// @dev calculates the sqrt price of the final swap step /// where the next (temporary) tick will not be crossed function calcFinalPrice( uint256 absDelta, uint256 liquidity, uint256 deltaL, uint160 currentSqrtP, bool isExactInput, bool isToken0 ) internal pure returns (uint256) { if (isToken0) { // if isExactInput: swap 0 -> 1, sqrtP decreases, we round up // else swap: 1 -> 0, sqrtP increases, we round down uint256 tmp = FullMath.mulDivFloor(absDelta, currentSqrtP, C.TWO_POW_96); if (isExactInput) { return FullMath.mulDivCeiling(liquidity + deltaL, currentSqrtP, liquidity + tmp); } else { return FullMath.mulDivFloor(liquidity + deltaL, currentSqrtP, liquidity - tmp); } } else { // if isExactInput: swap 1 -> 0, sqrtP increases, we round down // else swap: 0 -> 1, sqrtP decreases, we round up uint256 tmp = FullMath.mulDivFloor(absDelta, C.TWO_POW_96, currentSqrtP); if (isExactInput) { return FullMath.mulDivFloor(liquidity + tmp, currentSqrtP, liquidity + deltaL); } else { return FullMath.mulDivCeiling(liquidity - tmp, currentSqrtP, liquidity + deltaL); } } } /// @dev calculates returned output | input tokens in exchange for specified amount /// @dev round down when calculating returned output (isExactInput) so we avoid sending too much /// @dev round up when calculating returned input (!isExactInput) so we get desired output amount function calcReturnedAmount( uint256 liquidity, uint160 currentSqrtP, uint160 nextSqrtP, uint256 deltaL, bool isExactInput, bool isToken0 ) internal pure returns (int256 returnedAmount) { if (isToken0) { if (isExactInput) { // minimise actual output (<0, make less negative) so we avoid sending too much // returnedAmount = deltaL * nextSqrtP - liquidity * (currentSqrtP - nextSqrtP) returnedAmount = FullMath.mulDivCeiling(deltaL, nextSqrtP, C.TWO_POW_96).toInt256() + FullMath.mulDivFloor(liquidity, currentSqrtP - nextSqrtP, C.TWO_POW_96).revToInt256(); } else { // maximise actual input (>0) so we get desired output amount // returnedAmount = deltaL * nextSqrtP + liquidity * (nextSqrtP - currentSqrtP) returnedAmount = FullMath.mulDivCeiling(deltaL, nextSqrtP, C.TWO_POW_96).toInt256() + FullMath.mulDivCeiling(liquidity, nextSqrtP - currentSqrtP, C.TWO_POW_96).toInt256(); } } else { // returnedAmount = (liquidity + deltaL)/nextSqrtP - (liquidity)/currentSqrtP // if exactInput, minimise actual output (<0, make less negative) so we avoid sending too much // if exactOutput, maximise actual input (>0) so we get desired output amount returnedAmount = FullMath.mulDivCeiling(liquidity + deltaL, C.TWO_POW_96, nextSqrtP).toInt256() + FullMath.mulDivFloor(liquidity, C.TWO_POW_96, currentSqrtP).revToInt256(); } if (isExactInput && returnedAmount == 1) { // rounding make returnedAmount == 1 returnedAmount = 0; } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @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 /// @dev Code has been modified to be compatible with sol 0.8 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 mulDivFloor( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = a * b // Compute the product mod 2**256 and mod 2**256 - 1 // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2**256 + prod0 uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod0 := mul(a, b) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { require(denominator > 0, '0 denom'); assembly { result := div(prod0, denominator) } return result; } // Make sure the result is less than 2**256. // Also prevents denominator == 0 require(denominator > prod1, 'denom <= prod1'); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod uint256 remainder; assembly { remainder := mulmod(a, b, denominator) } // Subtract 256 bit number from 512 bit number assembly { prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator // Compute largest power of two divisor of denominator. // Always >= 1. uint256 twos = denominator & (~denominator + 1); // Divide denominator by power of two assembly { denominator := div(denominator, twos) } // Divide [prod1 prod0] by the factors of two assembly { prod0 := div(prod0, twos) } // Shift in bits from prod1 into prod0. For this we need // to flip `twos` such that it is 2**256 / twos. // If twos is zero, then it becomes one assembly { twos := add(div(sub(0, twos), twos), 1) } unchecked { prod0 |= prod1 * twos; // Invert denominator mod 2**256 // Now that denominator is an odd number, it has an inverse // modulo 2**256 such that denominator * inv = 1 mod 2**256. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, denominator * inv = 1 mod 2**4 uint256 inv = (3 * denominator) ^ 2; // Now use Newton-Raphson iteration to improve the precision. // Thanks to Hensel's lifting lemma, this also works in modular // arithmetic, doubling the correct bits in each step. inv *= 2 - denominator * inv; // inverse mod 2**8 inv *= 2 - denominator * inv; // inverse mod 2**16 inv *= 2 - denominator * inv; // inverse mod 2**32 inv *= 2 - denominator * inv; // inverse mod 2**64 inv *= 2 - denominator * inv; // inverse mod 2**128 inv *= 2 - denominator * inv; // inverse mod 2**256 // Because the division is now exact we can divide by multiplying // with the modular inverse of denominator. This will give us the // correct result modulo 2**256. Since the precoditions guarantee // that the outcome is less than 2**256, this is the final result. // We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inv; } return result; } /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result function mulDivCeiling( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { result = mulDivFloor(a, b, denominator); if (mulmod(a, b, denominator) > 0) { result++; } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.8.0; /// @title Safe casting methods /// @notice Contains methods for safely casting between types library SafeCast { /// @notice Cast a uint256 to uint32, revert on overflow /// @param y The uint256 to be downcasted /// @return z The downcasted integer, now type uint32 function toUint32(uint256 y) internal pure returns (uint32 z) { require((z = uint32(y)) == y); } /// @notice Cast a uint128 to a int128, revert on overflow /// @param y The uint256 to be casted /// @return z The casted integer, now type int256 function toInt128(uint128 y) internal pure returns (int128 z) { require(y < 2**127); z = int128(y); } /// @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) internal pure returns (uint128 z) { require((z = uint128(y)) == y); } /// @notice Cast a int128 to a uint128 and reverses the sign. /// @param y The int128 to be casted /// @return z = -y, now type uint128 function revToUint128(int128 y) internal pure returns (uint128 z) { unchecked { return type(uint128).max - uint128(y) + 1; } } /// @notice Cast a uint256 to a uint160, revert on overflow /// @param y The uint256 to be downcasted /// @return z The downcasted integer, now type uint160 function toUint160(uint256 y) internal pure returns (uint160 z) { require((z = uint160(y)) == y); } /// @notice Cast a uint256 to a int256, revert on overflow /// @param y The uint256 to be casted /// @return z The casted integer, now type int256 function toInt256(uint256 y) internal pure returns (int256 z) { require(y < 2**255); z = int256(y); } /// @notice Cast a uint256 to a int256 and reverses the sign, revert on overflow /// @param y The uint256 to be casted /// @return z = -y, now type int256 function revToInt256(uint256 y) internal pure returns (int256 z) { require(y < 2**255); z = -int256(y); } /// @notice Cast a int256 to a uint256 and reverses the sign. /// @param y The int256 to be casted /// @return z = -y, now type uint256 function revToUint256(int256 y) internal pure returns (uint256 z) { unchecked { return type(uint256).max - uint256(y) + 1; } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.8.0; /// @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 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 sqrtP 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 sqrtP) { unchecked { uint256 absTick = uint256(tick < 0 ? -int256(tick) : int256(tick)); require(absTick <= uint256(int256(MAX_TICK)), 'T'); // do bitwise comparison, if i-th bit is turned on, // multiply ratio by hardcoded values of sqrt(1.0001^-(2^i)) * 2^128 // where 0 <= i <= 19 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; // take reciprocal for positive tick values 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 sqrtP = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1)); } } /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio /// @dev Throws in case sqrtP < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may /// ever return. /// @param sqrtP 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 sqrtP) internal pure returns (int24 tick) { // second inequality must be < because the price can never reach the price at the max tick require(sqrtP >= MIN_SQRT_RATIO && sqrtP < MAX_SQRT_RATIO, 'R'); uint256 ratio = uint256(sqrtP) << 32; uint256 r = ratio; uint256 msb = 0; unchecked { 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) <= sqrtP ? tickHi : tickLow; } } function getMaxNumberTicks(int24 _tickDistance) internal pure returns (uint24 numTicks) { return uint24(TickMath.MAX_TICK / _tickDistance) * 2; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import {IPoolActions} from './pool/IPoolActions.sol'; import {IPoolEvents} from './pool/IPoolEvents.sol'; import {IPoolStorage} from './pool/IPoolStorage.sol'; interface IPool is IPoolActions, IPoolEvents, IPoolStorage {}
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IPoolActions { /// @notice Sets the initial price for the pool and seeds reinvestment liquidity /// @dev Assumes the caller has sent the necessary token amounts /// required for initializing reinvestment liquidity prior to calling this function /// @param initialSqrtP the initial sqrt price of the pool /// @param qty0 token0 quantity sent to and locked permanently in the pool /// @param qty1 token1 quantity sent to and locked permanently in the pool function unlockPool(uint160 initialSqrtP) external returns (uint256 qty0, uint256 qty1); /// @notice Adds liquidity for the specified recipient/tickLower/tickUpper position /// @dev Any token0 or token1 owed for the liquidity provision have to be paid for when /// the IMintCallback#mintCallback is called to this method's caller /// The quantity of token0/token1 to be sent depends on /// tickLower, tickUpper, the amount of liquidity, and the current price of the pool. /// Also sends reinvestment tokens (fees) to the recipient for any fees collected /// while the position is in range /// Reinvestment tokens have to be burnt via #burnRTokens in exchange for token0 and token1 /// @param recipient Address for which the added liquidity is credited to /// @param tickLower Recipient position's lower tick /// @param tickUpper Recipient position's upper tick /// @param ticksPrevious The nearest tick that is initialized and <= the lower & upper ticks /// @param qty Liquidity quantity to mint /// @param data Data (if any) to be passed through to the callback /// @return qty0 token0 quantity sent to the pool in exchange for the minted liquidity /// @return qty1 token1 quantity sent to the pool in exchange for the minted liquidity /// @return feeGrowthInside position's updated feeGrowthInside value function mint( address recipient, int24 tickLower, int24 tickUpper, int24[2] calldata ticksPrevious, uint128 qty, bytes calldata data ) external returns ( uint256 qty0, uint256 qty1, uint256 feeGrowthInside ); /// @notice Remove liquidity from the caller /// Also sends reinvestment tokens (fees) to the caller for any fees collected /// while the position is in range /// Reinvestment tokens have to be burnt via #burnRTokens in exchange for token0 and token1 /// @param tickLower Position's lower tick for which to burn liquidity /// @param tickUpper Position's upper tick for which to burn liquidity /// @param qty Liquidity quantity to burn /// @return qty0 token0 quantity sent to the caller /// @return qty1 token1 quantity sent to the caller /// @return feeGrowthInside position's updated feeGrowthInside value function burn( int24 tickLower, int24 tickUpper, uint128 qty ) external returns ( uint256 qty0, uint256 qty1, uint256 feeGrowthInside ); /// @notice Burns reinvestment tokens in exchange to receive the fees collected in token0 and token1 /// @param qty Reinvestment token quantity to burn /// @param isLogicalBurn true if burning rTokens without returning any token0/token1 /// otherwise should transfer token0/token1 to sender /// @return qty0 token0 quantity sent to the caller for burnt reinvestment tokens /// @return qty1 token1 quantity sent to the caller for burnt reinvestment tokens function burnRTokens(uint256 qty, bool isLogicalBurn) external returns (uint256 qty0, uint256 qty1); /// @notice Swap token0 -> token1, or vice versa /// @dev This method's caller receives a callback in the form of ISwapCallback#swapCallback /// @dev swaps will execute up to limitSqrtP or swapQty is fully used /// @param recipient The address to receive the swap output /// @param swapQty The swap quantity, which implicitly configures the swap as exact input (>0), or exact output (<0) /// @param isToken0 Whether the swapQty is specified in token0 (true) or token1 (false) /// @param limitSqrtP the limit of sqrt price after swapping /// could be MAX_SQRT_RATIO-1 when swapping 1 -> 0 and MIN_SQRT_RATIO+1 when swapping 0 -> 1 for no limit swap /// @param data Any data to be passed through to the callback /// @return qty0 Exact token0 qty sent to recipient if < 0. Minimally received quantity if > 0. /// @return qty1 Exact token1 qty sent to recipient if < 0. Minimally received quantity if > 0. function swap( address recipient, int256 swapQty, bool isToken0, uint160 limitSqrtP, bytes calldata data ) external returns (int256 qty0, int256 qty1); /// @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 IFlashCallback#flashCallback /// @dev Fees collected are sent to the feeTo address if it is set in Factory /// @param recipient The address which will receive the token0 and token1 quantities /// @param qty0 token0 quantity to be loaned to the recipient /// @param qty1 token1 quantity to be loaned to the recipient /// @param data Any data to be passed through to the callback function flash( address recipient, uint256 qty0, uint256 qty1, bytes calldata data ) external; /// @notice sync fee of position /// @param tickLower Position's lower tick /// @param tickUpper Position's upper tick function tweakPosZeroLiq(int24 tickLower, int24 tickUpper) external returns(uint256 feeGrowthInsideLast); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title Callback for IPool#mint /// @notice Any contract that calls IPool#mint must implement this interface interface IMintCallback { /// @notice Called to `msg.sender` after minting liquidity via IPool#mint. /// @dev This function's implementation must send pool tokens to the pool for the minted LP tokens. /// The caller of this method must be checked to be a Pool deployed by the canonical Factory. /// @param deltaQty0 The token0 quantity to be sent to the pool. /// @param deltaQty1 The token1 quantity to be sent to the pool. /// @param data Data passed through by the caller via the IPool#mint call function mintCallback( uint256 deltaQty0, uint256 deltaQty1, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title Callback for IPool#swap /// @notice Any contract that calls IPool#swap must implement this interface interface ISwapCallback { /// @notice Called to `msg.sender` after swap execution of IPool#swap. /// @dev This function's implementation must pay tokens owed to the pool for the swap. /// The caller of this method must be checked to be a Pool deployed by the canonical Factory. /// deltaQty0 and deltaQty1 can both be 0 if no tokens were swapped. /// @param deltaQty0 The token0 quantity that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send deltaQty0 of token0 to the pool. /// @param deltaQty1 The token1 quantity that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send deltaQty1 of token1 to the pool. /// @param data Data passed through by the caller via the IPool#swap call function swapCallback( int256 deltaQty0, int256 deltaQty1, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title Callback for IPool#flash /// @notice Any contract that calls IPool#flash must implement this interface interface IFlashCallback { /// @notice Called to `msg.sender` after flash loaning to the recipient from IPool#flash. /// @dev This function's implementation must send the loaned amounts with computed fee amounts /// The caller of this method must be checked to be a Pool deployed by the canonical Factory. /// @param feeQty0 The token0 fee to be sent to the pool. /// @param feeQty1 The token1 fee to be sent to the pool. /// @param data Data passed through by the caller via the IPool#flash call function flashCallback( uint256 feeQty0, uint256 feeQty1, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.9; import {LiqDeltaMath} from './libraries/LiqDeltaMath.sol'; import {SafeCast} from './libraries/SafeCast.sol'; import {MathConstants} from './libraries/MathConstants.sol'; import {FullMath} from './libraries/FullMath.sol'; import {TickMath} from './libraries/TickMath.sol'; import {Linkedlist} from './libraries/Linkedlist.sol'; import {PoolStorage} from './PoolStorage.sol'; contract PoolTicksState is PoolStorage { using SafeCast for int128; using SafeCast for uint128; using Linkedlist for mapping(int24 => Linkedlist.Data); struct UpdatePositionData { // address of owner of the position address owner; // position's lower and upper ticks int24 tickLower; int24 tickUpper; // if minting, need to pass the previous initialized ticks for tickLower and tickUpper int24 tickLowerPrevious; int24 tickUpperPrevious; // any change in liquidity uint128 liquidityDelta; // true = adding liquidity, false = removing liquidity bool isAddLiquidity; } function _updatePosition( UpdatePositionData memory updateData, int24 currentTick, CumulativesData memory cumulatives ) internal returns (uint256 feesClaimable, uint256 feeGrowthInside) { // update ticks if necessary uint256 feeGrowthOutsideLowerTick = _updateTick( updateData.tickLower, currentTick, updateData.tickLowerPrevious, updateData.liquidityDelta, updateData.isAddLiquidity, cumulatives, true ); uint256 feeGrowthOutsideUpperTick = _updateTick( updateData.tickUpper, currentTick, updateData.tickUpperPrevious, updateData.liquidityDelta, updateData.isAddLiquidity, cumulatives, false ); // calculate feeGrowthInside unchecked { if (currentTick < updateData.tickLower) { feeGrowthInside = feeGrowthOutsideLowerTick - feeGrowthOutsideUpperTick; } else if (currentTick >= updateData.tickUpper) { feeGrowthInside = feeGrowthOutsideUpperTick - feeGrowthOutsideLowerTick; } else { feeGrowthInside = cumulatives.feeGrowth - feeGrowthOutsideLowerTick - feeGrowthOutsideUpperTick; } } // calc rTokens to be minted for the position's accumulated fees feesClaimable = _updatePositionData(updateData, feeGrowthInside); } /// @dev Update liquidity net data and do cross tick function _updateLiquidityAndCrossTick( int24 nextTick, uint128 currentLiquidity, uint256 feeGrowthGlobal, uint128 secondsPerLiquidityGlobal, bool willUpTick ) internal returns (uint128 newLiquidity, int24 newNextTick) { unchecked { ticks[nextTick].feeGrowthOutside = feeGrowthGlobal - ticks[nextTick].feeGrowthOutside; ticks[nextTick].secondsPerLiquidityOutside = secondsPerLiquidityGlobal - ticks[nextTick].secondsPerLiquidityOutside; } int128 liquidityNet = ticks[nextTick].liquidityNet; if (willUpTick) { newNextTick = initializedTicks[nextTick].next; } else { newNextTick = initializedTicks[nextTick].previous; liquidityNet = -liquidityNet; } newLiquidity = LiqDeltaMath.applyLiquidityDelta( currentLiquidity, liquidityNet >= 0 ? uint128(liquidityNet) : liquidityNet.revToUint128(), liquidityNet >= 0 ); } function _updatePoolData( uint128 baseL, uint128 reinvestL, uint160 sqrtP, int24 currentTick, int24 nextTick ) internal { poolData.baseL = baseL; poolData.reinvestL = reinvestL; poolData.sqrtP = sqrtP; poolData.currentTick = currentTick; poolData.nearestCurrentTick = nextTick > currentTick ? initializedTicks[nextTick].previous : nextTick; } /// @dev Return initial data before swapping /// @param willUpTick whether is up/down tick /// @return baseL current pool base liquidity without reinvestment liquidity /// @return reinvestL current pool reinvestment liquidity /// @return sqrtP current pool sqrt price /// @return currentTick current pool tick /// @return nextTick next tick to calculate data function _getInitialSwapData(bool willUpTick) internal view returns ( uint128 baseL, uint128 reinvestL, uint160 sqrtP, int24 currentTick, int24 nextTick ) { baseL = poolData.baseL; reinvestL = poolData.reinvestL; sqrtP = poolData.sqrtP; currentTick = poolData.currentTick; nextTick = poolData.nearestCurrentTick; if (willUpTick) { nextTick = initializedTicks[nextTick].next; } } function _updatePositionData(UpdatePositionData memory _data, uint256 feeGrowthInside) private returns (uint256 feesClaimable) { bytes32 key = _positionKey(_data.owner, _data.tickLower, _data.tickUpper); // calculate accumulated fees for current liquidity // feeGrowthInside is relative value, hence underflow is acceptable uint256 feeGrowth; unchecked { feeGrowth = feeGrowthInside - positions[key].feeGrowthInsideLast; } uint128 prevLiquidity = positions[key].liquidity; feesClaimable = FullMath.mulDivFloor(feeGrowth, prevLiquidity, MathConstants.TWO_POW_96); // update the position if (_data.liquidityDelta != 0) { positions[key].liquidity = LiqDeltaMath.applyLiquidityDelta( prevLiquidity, _data.liquidityDelta, _data.isAddLiquidity ); } positions[key].feeGrowthInsideLast = feeGrowthInside; } /// @notice Updates a tick and returns the fee growth outside of that tick /// @param tick Tick to be updated /// @param tickCurrent Current tick /// @param tickPrevious the nearest initialized tick which is lower than or equal to `tick` /// @param liquidityDelta Liquidity quantity to be added | removed when tick is crossed up | down /// @param cumulatives All-time global fee growth and seconds, per unit of liquidity /// @param isLower true | false if updating a position's lower | upper tick /// @return feeGrowthOutside last value of feeGrowthOutside function _updateTick( int24 tick, int24 tickCurrent, int24 tickPrevious, uint128 liquidityDelta, bool isAdd, CumulativesData memory cumulatives, bool isLower ) private returns (uint256 feeGrowthOutside) { uint128 liquidityGrossBefore = ticks[tick].liquidityGross; require(liquidityGrossBefore != 0 || liquidityDelta != 0, 'invalid liq'); if (liquidityDelta == 0) return ticks[tick].feeGrowthOutside; uint128 liquidityGrossAfter = LiqDeltaMath.applyLiquidityDelta( liquidityGrossBefore, liquidityDelta, isAdd ); require(liquidityGrossAfter <= maxTickLiquidity, '> max liquidity'); int128 signedLiquidityDelta = isAdd ? liquidityDelta.toInt128() : -(liquidityDelta.toInt128()); // if lower tick, liquidityDelta should be added | removed when crossed up | down // else, for upper tick, liquidityDelta should be removed | added when crossed up | down int128 liquidityNetAfter = isLower ? ticks[tick].liquidityNet + signedLiquidityDelta : ticks[tick].liquidityNet - signedLiquidityDelta; if (liquidityGrossBefore == 0) { // by convention, all growth before a tick was initialized is assumed to happen below it if (tick <= tickCurrent) { ticks[tick].feeGrowthOutside = cumulatives.feeGrowth; ticks[tick].secondsPerLiquidityOutside = cumulatives.secondsPerLiquidity; } } ticks[tick].liquidityGross = liquidityGrossAfter; ticks[tick].liquidityNet = liquidityNetAfter; feeGrowthOutside = ticks[tick].feeGrowthOutside; if (liquidityGrossBefore > 0 && liquidityGrossAfter == 0) { delete ticks[tick]; } if ((liquidityGrossBefore > 0) != (liquidityGrossAfter > 0)) { _updateTickList(tick, tickPrevious, tickCurrent, isAdd); } } /// @dev Update the tick linkedlist, assume that tick is not in the list /// @param tick tick index to update /// @param currentTick the pool currentt tick /// @param previousTick the nearest initialized tick that is lower than the tick, in case adding /// @param isAdd whether is add or remove the tick function _updateTickList( int24 tick, int24 previousTick, int24 currentTick, bool isAdd ) internal { if (isAdd) { if (tick == TickMath.MIN_TICK || tick == TickMath.MAX_TICK) return; // find the correct previousTick to the `tick`, avoid revert when new liquidity has been added between tick & previousTick int24 nextTick = initializedTicks[previousTick].next; require( nextTick != initializedTicks[previousTick].previous, 'previous tick has been removed' ); uint256 iteration = 0; while (nextTick <= tick && iteration < MathConstants.MAX_TICK_TRAVEL) { previousTick = nextTick; nextTick = initializedTicks[previousTick].next; iteration++; } initializedTicks.insert(tick, previousTick, nextTick); if (poolData.nearestCurrentTick < tick && tick <= currentTick) { poolData.nearestCurrentTick = tick; } } else { if (tick == poolData.nearestCurrentTick) { poolData.nearestCurrentTick = initializedTicks.remove(tick); } else { initializedTicks.remove(tick); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; 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"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; library QuadMath { // our equation is ax^2 - 2bx + c = 0, where a, b and c > 0 // the qudratic formula to obtain the smaller root is (2b - sqrt((2*b)^2 - 4ac)) / 2a // which can be simplified to (b - sqrt(b^2 - ac)) / a function getSmallerRootOfQuadEqn( uint256 a, uint256 b, uint256 c ) internal pure returns (uint256 smallerRoot) { smallerRoot = (b - sqrt(b * b - a * c)) / a; } // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method) function sqrt(uint256 y) internal pure returns (uint256 z) { unchecked { if (y > 3) { z = y; uint256 x = y / 2 + 1; while (x < z) { z = x; x = (y / x + x) / 2; } } else if (y != 0) { z = 1; } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IPoolEvents { /// @notice Emitted only once per pool when #initialize is first called /// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize /// @param sqrtP The initial price of the pool /// @param tick The initial tick of the pool event Initialize(uint160 sqrtP, int24 tick); /// @notice Emitted when liquidity is minted for a given position /// @dev transfers reinvestment tokens for any collected fees earned by the position /// @param sender address that minted the liquidity /// @param owner address of owner of the position /// @param tickLower position's lower tick /// @param tickUpper position's upper tick /// @param qty liquidity minted to the position range /// @param qty0 token0 quantity needed to mint the liquidity /// @param qty1 token1 quantity needed to mint the liquidity event Mint( address sender, address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 qty, uint256 qty0, uint256 qty1 ); /// @notice Emitted when a position's liquidity is removed /// @dev transfers reinvestment tokens for any collected fees earned by the position /// @param owner address of owner of the position /// @param tickLower position's lower tick /// @param tickUpper position's upper tick /// @param qty liquidity removed /// @param qty0 token0 quantity withdrawn from removal of liquidity /// @param qty1 token1 quantity withdrawn from removal of liquidity event Burn( address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 qty, uint256 qty0, uint256 qty1 ); /// @notice Emitted when reinvestment tokens are burnt /// @param owner address which burnt the reinvestment tokens /// @param qty reinvestment token quantity burnt /// @param qty0 token0 quantity sent to owner for burning reinvestment tokens /// @param qty1 token1 quantity sent to owner for burning reinvestment tokens event BurnRTokens(address indexed owner, uint256 qty, uint256 qty0, uint256 qty1); /// @notice Emitted for swaps by the pool between token0 and token1 /// @param sender Address that initiated the swap call, and that received the callback /// @param recipient Address that received the swap output /// @param deltaQty0 Change in pool's token0 balance /// @param deltaQty1 Change in pool's token1 balance /// @param sqrtP Pool's sqrt price after the swap /// @param liquidity Pool's liquidity after the swap /// @param currentTick Log base 1.0001 of pool's price after the swap event Swap( address indexed sender, address indexed recipient, int256 deltaQty0, int256 deltaQty1, uint160 sqrtP, uint128 liquidity, int24 currentTick ); /// @notice Emitted by the pool for any flash loans of token0/token1 /// @param sender The address that initiated the flash loan, and that received the callback /// @param recipient The address that received the flash loan quantities /// @param qty0 token0 quantity loaned to the recipient /// @param qty1 token1 quantity loaned to the recipient /// @param paid0 token0 quantity paid for the flash, which can exceed qty0 + fee /// @param paid1 token1 quantity paid for the flash, which can exceed qty0 + fee event Flash( address indexed sender, address indexed recipient, uint256 qty0, uint256 qty1, uint256 paid0, uint256 paid1 ); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import {IFactory} from '../IFactory.sol'; import {IPoolOracle} from '../oracle/IPoolOracle.sol'; interface IPoolStorage { /// @notice The contract that deployed the pool, which must adhere to the IFactory interface /// @return The contract address function factory() external view returns (IFactory); /// @notice The oracle contract that stores necessary data for price oracle /// @return The contract address function poolOracle() external view returns (IPoolOracle); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (IERC20); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (IERC20); /// @notice The fee to be charged for a swap in basis points /// @return The swap fee in basis points function swapFeeUnits() external view returns (uint24); /// @notice The pool tick distance /// @dev Ticks can only be initialized and used at multiples of this value /// It remains an int24 to avoid casting even though it is >= 1. /// e.g: a tickDistance of 5 means ticks can be initialized every 5th tick, i.e., ..., -10, -5, 0, 5, 10, ... /// @return The tick distance function tickDistance() external view returns (int24); /// @notice Maximum gross liquidity that an initialized tick can have /// @dev This is to prevent overflow the pool's active base liquidity (uint128) /// 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 maxTickLiquidity() external view returns (uint128); /// @notice Look up information about a specific tick in the pool /// @param tick The tick to look up /// @return liquidityGross total liquidity amount from positions that uses this tick as a lower or upper tick /// liquidityNet how much liquidity changes when the pool tick crosses above the tick /// feeGrowthOutside the fee growth on the other side of the tick relative to the current tick /// secondsPerLiquidityOutside the seconds per unit of liquidity spent on the other side of the tick relative to the current tick function ticks(int24 tick) external view returns ( uint128 liquidityGross, int128 liquidityNet, uint256 feeGrowthOutside, uint128 secondsPerLiquidityOutside ); /// @notice Returns the previous and next initialized ticks of a specific tick /// @dev If specified tick is uninitialized, the returned values are zero. /// @param tick The tick to look up function initializedTicks(int24 tick) external view returns (int24 previous, int24 next); /// @notice Returns the information about a position by the position's key /// @return liquidity the liquidity quantity of the position /// @return feeGrowthInsideLast fee growth inside the tick range as of the last mint / burn action performed function getPositions( address owner, int24 tickLower, int24 tickUpper ) external view returns (uint128 liquidity, uint256 feeGrowthInsideLast); /// @notice Fetches the pool's prices, ticks and lock status /// @return sqrtP sqrt of current price: sqrt(token1/token0) /// @return currentTick pool's current tick /// @return nearestCurrentTick pool's nearest initialized tick that is <= currentTick /// @return locked true if pool is locked, false otherwise function getPoolState() external view returns ( uint160 sqrtP, int24 currentTick, int24 nearestCurrentTick, bool locked ); /// @notice Fetches the pool's liquidity values /// @return baseL pool's base liquidity without reinvest liqudity /// @return reinvestL the liquidity is reinvested into the pool /// @return reinvestLLast last cached value of reinvestL, used for calculating reinvestment token qty function getLiquidityState() external view returns ( uint128 baseL, uint128 reinvestL, uint128 reinvestLLast ); /// @return feeGrowthGlobal All-time fee growth per unit of liquidity of the pool function getFeeGrowthGlobal() external view returns (uint256); /// @return secondsPerLiquidityGlobal All-time seconds per unit of liquidity of the pool /// @return lastUpdateTime The timestamp in which secondsPerLiquidityGlobal was last updated function getSecondsPerLiquidityData() external view returns (uint128 secondsPerLiquidityGlobal, uint32 lastUpdateTime); /// @notice Calculates and returns the active time per unit of liquidity until current block.timestamp /// @param tickLower The lower tick (of a position) /// @param tickUpper The upper tick (of a position) /// @return secondsPerLiquidityInside active time (multiplied by 2^96) /// between the 2 ticks, per unit of liquidity. function getSecondsPerLiquidityInside(int24 tickLower, int24 tickUpper) external view returns (uint128 secondsPerLiquidityInside); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @title The implementation for a LinkedList library Linkedlist { struct Data { int24 previous; int24 next; } /// @dev init data with the lowest and highest value of the LinkedList /// @param lowestValue the lowest and also the HEAD of LinkedList /// @param highestValue the highest and also the TAIL of the LinkedList function init( mapping(int24 => Linkedlist.Data) storage self, int24 lowestValue, int24 highestValue ) internal { (self[lowestValue].previous, self[lowestValue].next) = (lowestValue, highestValue); (self[highestValue].previous, self[highestValue].next) = (lowestValue, highestValue); } /// @dev Remove a value from the linked list, return the lower value /// Return the lower value after removing, in case removedValue is the lowest/highest, no removing is done function remove(mapping(int24 => Linkedlist.Data) storage self, int24 removedValue) internal returns (int24 lowerValue) { Data memory removedValueData = self[removedValue]; require(removedValueData.next != removedValueData.previous, 'remove non-existent value'); if (removedValueData.previous == removedValue) return removedValue; // remove the lowest value, nothing is done lowerValue = removedValueData.previous; if (removedValueData.next == removedValue) return lowerValue; // remove the highest value, nothing is done self[removedValueData.previous].next = removedValueData.next; self[removedValueData.next].previous = removedValueData.previous; delete self[removedValue]; } /// @dev Insert a new value to the linked list given its lower value that is inside the linked list /// @param newValue the new value to insert, it must not exist in the LinkedList /// @param lowerValue the nearest value which is <= newValue and is in the LinkedList function insert( mapping(int24 => Linkedlist.Data) storage self, int24 newValue, int24 lowerValue, int24 nextValue ) internal { require(nextValue != self[lowerValue].previous, 'lower value is not initialized'); require(lowerValue < newValue && nextValue > newValue, 'invalid lower value'); self[newValue].next = nextValue; self[newValue].previous = lowerValue; self[nextValue].previous = newValue; self[lowerValue].next = newValue; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.9; import {Clones} from '@openzeppelin/contracts/proxy/Clones.sol'; import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import {Linkedlist} from './libraries/Linkedlist.sol'; import {TickMath} from './libraries/TickMath.sol'; import {MathConstants as C} from './libraries/MathConstants.sol'; import {IPoolOracle} from './interfaces/oracle/IPoolOracle.sol'; import {IFactory} from './interfaces/IFactory.sol'; import {IPoolStorage} from './interfaces/pool/IPoolStorage.sol'; abstract contract PoolStorage is IPoolStorage { using Clones for address; using Linkedlist for mapping(int24 => Linkedlist.Data); address internal constant LIQUIDITY_LOCKUP_ADDRESS = 0xD444422222222222222222222222222222222222; struct PoolData { uint160 sqrtP; int24 nearestCurrentTick; int24 currentTick; bool locked; uint128 baseL; uint128 reinvestL; uint128 reinvestLLast; uint256 feeGrowthGlobal; uint128 secondsPerLiquidityGlobal; uint32 secondsPerLiquidityUpdateTime; } // data stored for each initialized individual tick struct TickData { // gross liquidity of all positions in tick uint128 liquidityGross; // liquidity quantity to be added | removed when tick is crossed up | down int128 liquidityNet; // fee growth per unit of liquidity on the other side of this tick (relative to current tick) // only has relative meaning, not absolute — the value depends on when the tick is initialized uint256 feeGrowthOutside; // the seconds per unit of liquidity on the _other_ side of this tick (relative to the current tick) // only has relative meaning, not absolute — the value depends on when the tick is initialized uint128 secondsPerLiquidityOutside; } // data stored for each user's position struct Position { // the amount of liquidity owned by this position uint128 liquidity; // fee growth per unit of liquidity as of the last update to liquidity uint256 feeGrowthInsideLast; } struct CumulativesData { uint256 feeGrowth; uint128 secondsPerLiquidity; } /// see IPoolStorage for explanations of the immutables below IFactory public immutable override factory; IERC20 public immutable override token0; IERC20 public immutable override token1; IPoolOracle public immutable override poolOracle; uint128 public immutable override maxTickLiquidity; uint24 public immutable override swapFeeUnits; int24 public immutable override tickDistance; mapping(int24 => TickData) public override ticks; mapping(int24 => Linkedlist.Data) public override initializedTicks; mapping(bytes32 => Position) internal positions; PoolData internal poolData; /// @dev Mutually exclusive reentrancy protection into the pool from/to a method. /// Also prevents entrance to pool actions prior to initalization modifier lock() { require(poolData.locked == false, 'locked'); poolData.locked = true; _; poolData.locked = false; } constructor() { // fetch data from factory constructor ( address _factory, address _poolOracle, address _token0, address _token1, uint24 _swapFeeUnits, int24 _tickDistance ) = IFactory(msg.sender).parameters(); factory = IFactory(_factory); poolOracle = IPoolOracle(_poolOracle); token0 = IERC20(_token0); token1 = IERC20(_token1); swapFeeUnits = _swapFeeUnits; tickDistance = _tickDistance; maxTickLiquidity = type(uint128).max / TickMath.getMaxNumberTicks(_tickDistance); poolData.locked = true; // set pool to locked state } function _initPoolStorage(uint160 initialSqrtP, int24 initialTick) internal { poolData.baseL = 0; poolData.reinvestL = C.MIN_LIQUIDITY; poolData.reinvestLLast = C.MIN_LIQUIDITY; poolData.sqrtP = initialSqrtP; poolData.currentTick = initialTick; poolData.nearestCurrentTick = TickMath.MIN_TICK; initializedTicks.init(TickMath.MIN_TICK, TickMath.MAX_TICK); poolOracle.initializeOracle(_blockTimestamp()); poolData.locked = false; // unlock the pool } function getPositions( address owner, int24 tickLower, int24 tickUpper ) external view override returns (uint128 liquidity, uint256 feeGrowthInsideLast) { bytes32 key = _positionKey(owner, tickLower, tickUpper); return (positions[key].liquidity, positions[key].feeGrowthInsideLast); } /// @inheritdoc IPoolStorage function getPoolState() external view override returns ( uint160 sqrtP, int24 currentTick, int24 nearestCurrentTick, bool locked ) { sqrtP = poolData.sqrtP; currentTick = poolData.currentTick; nearestCurrentTick = poolData.nearestCurrentTick; locked = poolData.locked; } /// @inheritdoc IPoolStorage function getLiquidityState() external view override returns ( uint128 baseL, uint128 reinvestL, uint128 reinvestLLast ) { baseL = poolData.baseL; reinvestL = poolData.reinvestL; reinvestLLast = poolData.reinvestLLast; } function getFeeGrowthGlobal() external view override returns (uint256) { return poolData.feeGrowthGlobal; } function getSecondsPerLiquidityData() external view override returns (uint128 secondsPerLiquidityGlobal, uint32 lastUpdateTime) { secondsPerLiquidityGlobal = poolData.secondsPerLiquidityGlobal; lastUpdateTime = poolData.secondsPerLiquidityUpdateTime; } function getSecondsPerLiquidityInside(int24 tickLower, int24 tickUpper) external view override returns (uint128 secondsPerLiquidityInside) { require(tickLower <= tickUpper, 'bad tick range'); int24 currentTick = poolData.currentTick; uint128 secondsPerLiquidityGlobal = poolData.secondsPerLiquidityGlobal; uint32 lastUpdateTime = poolData.secondsPerLiquidityUpdateTime; uint128 lowerValue = ticks[tickLower].secondsPerLiquidityOutside; uint128 upperValue = ticks[tickUpper].secondsPerLiquidityOutside; unchecked { if (currentTick < tickLower) { secondsPerLiquidityInside = lowerValue - upperValue; } else if (currentTick >= tickUpper) { secondsPerLiquidityInside = upperValue - lowerValue; } else { secondsPerLiquidityInside = secondsPerLiquidityGlobal - (lowerValue + upperValue); } } // in the case where position is in range (tickLower <= _poolTick < tickUpper), // need to add timeElapsed per liquidity if (tickLower <= currentTick && currentTick < tickUpper) { uint256 secondsElapsed = _blockTimestamp() - lastUpdateTime; uint128 baseL = poolData.baseL; if (secondsElapsed > 0 && baseL > 0) { unchecked { secondsPerLiquidityInside += uint128((secondsElapsed << 96) / baseL); } } } } function _positionKey( address owner, int24 tickLower, int24 tickUpper ) internal pure returns (bytes32) { return keccak256(abi.encodePacked(owner, tickLower, tickUpper)); } /// @dev For overriding in tests function _blockTimestamp() internal view virtual returns (uint32) { return uint32(block.timestamp); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. * * _Available since v3.4._ */ library Clones { /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create opcode, which should never revert. */ function clone(address implementation) internal returns (address instance) { assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create(0, ptr, 0x37) } require(instance != address(0), "ERC1167: create failed"); } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `implementation` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) { assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create2(0, ptr, 0x37, salt) } require(instance != address(0), "ERC1167: create2 failed"); } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt, address deployer ) internal pure returns (address predicted) { assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000) mstore(add(ptr, 0x38), shl(0x60, deployer)) mstore(add(ptr, 0x4c), salt) mstore(add(ptr, 0x6c), keccak256(ptr, 0x37)) predicted := keccak256(add(ptr, 0x37), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress(address implementation, bytes32 salt) internal view returns (address predicted) { return predictDeterministicAddress(implementation, salt, address(this)); } }
{ "optimizer": { "enabled": true, "runs": 500 }, "metadata": { "bytecodeHash": "none" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"uint32","name":"_vestingPeriod","type":"uint32"},{"internalType":"address","name":"_poolOracle","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldConfigMaster","type":"address"},{"indexed":false,"internalType":"address","name":"newConfigMaster","type":"address"}],"name":"ConfigMasterUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"feeTo","type":"address"},{"indexed":false,"internalType":"uint24","name":"governmentFeeUnits","type":"uint24"}],"name":"FeeConfigurationUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_nftManager","type":"address"},{"indexed":false,"internalType":"bool","name":"added","type":"bool"}],"name":"NFTManagerAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_nftManager","type":"address"},{"indexed":false,"internalType":"bool","name":"removed","type":"bool"}],"name":"NFTManagerRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token0","type":"address"},{"indexed":true,"internalType":"address","name":"token1","type":"address"},{"indexed":true,"internalType":"uint24","name":"swapFeeUnits","type":"uint24"},{"indexed":false,"internalType":"int24","name":"tickDistance","type":"int24"},{"indexed":false,"internalType":"address","name":"pool","type":"address"}],"name":"PoolCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint24","name":"swapFeeUnits","type":"uint24"},{"indexed":true,"internalType":"int24","name":"tickDistance","type":"int24"}],"name":"SwapFeeEnabled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint32","name":"vestingPeriod","type":"uint32"}],"name":"VestingPeriodUpdated","type":"event"},{"anonymous":false,"inputs":[],"name":"WhitelistDisabled","type":"event"},{"anonymous":false,"inputs":[],"name":"WhitelistEnabled","type":"event"},{"inputs":[{"internalType":"address","name":"_nftManager","type":"address"}],"name":"addNFTManager","outputs":[{"internalType":"bool","name":"added","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"configMaster","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"},{"internalType":"uint24","name":"swapFeeUnits","type":"uint24"}],"name":"createPool","outputs":[{"internalType":"address","name":"pool","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"disableWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint24","name":"swapFeeUnits","type":"uint24"},{"internalType":"int24","name":"tickDistance","type":"int24"}],"name":"enableSwapFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"enableWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint24","name":"","type":"uint24"}],"name":"feeAmountTickDistance","outputs":[{"internalType":"int24","name":"","type":"int24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeConfiguration","outputs":[{"internalType":"address","name":"_feeTo","type":"address"},{"internalType":"uint24","name":"_governmentFeeUnits","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCreationCode","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCreationCodeContracts","outputs":[{"internalType":"address","name":"contractA","type":"address"},{"internalType":"address","name":"contractB","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint24","name":"","type":"uint24"}],"name":"getPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getWhitelistedNFTManagers","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"isWhitelistedNFTManager","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"parameters","outputs":[{"internalType":"address","name":"factory","type":"address"},{"internalType":"address","name":"poolOracle","type":"address"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"swapFeeUnits","type":"uint24"},{"internalType":"int24","name":"tickDistance","type":"int24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolInitHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolOracle","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nftManager","type":"address"}],"name":"removeNFTManager","outputs":[{"internalType":"bool","name":"removed","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_configMaster","type":"address"}],"name":"updateConfigMaster","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeTo","type":"address"},{"internalType":"uint24","name":"_governmentFeeUnits","type":"uint24"}],"name":"updateFeeConfiguration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_vestingPeriod","type":"uint32"}],"name":"updateVestingPeriod","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vestingPeriod","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"whitelistDisabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000012c000000000000000000000000d8ac7f696ae99cd7b689726cf03c5711dd8dcdb4
-----Decoded View---------------
Arg [0] : _vestingPeriod (uint32): 300
Arg [1] : _poolOracle (address): 0xD8ac7f696Ae99CD7B689726Cf03c5711Dd8DcDb4
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000000000012c
Arg [1] : 000000000000000000000000d8ac7f696ae99cd7b689726cf03c5711dd8dcdb4
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Multichain Portfolio | 30 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.