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Contract Source Code Verified (Exact Match)
Contract Name:
PoolManager
Compiler Version
v0.8.26+commit.8a97fa7a
Optimization Enabled:
Yes with 44444444 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.26;
import {Hooks} from "./libraries/Hooks.sol";
import {Pool} from "./libraries/Pool.sol";
import {SafeCast} from "./libraries/SafeCast.sol";
import {Position} from "./libraries/Position.sol";
import {LPFeeLibrary} from "./libraries/LPFeeLibrary.sol";
import {Currency, CurrencyLibrary} from "./types/Currency.sol";
import {PoolKey} from "./types/PoolKey.sol";
import {TickMath} from "./libraries/TickMath.sol";
import {NoDelegateCall} from "./NoDelegateCall.sol";
import {IHooks} from "./interfaces/IHooks.sol";
import {IPoolManager} from "./interfaces/IPoolManager.sol";
import {IUnlockCallback} from "./interfaces/callback/IUnlockCallback.sol";
import {ProtocolFees} from "./ProtocolFees.sol";
import {ERC6909Claims} from "./ERC6909Claims.sol";
import {PoolId} from "./types/PoolId.sol";
import {BalanceDelta, BalanceDeltaLibrary} from "./types/BalanceDelta.sol";
import {BeforeSwapDelta} from "./types/BeforeSwapDelta.sol";
import {Lock} from "./libraries/Lock.sol";
import {CurrencyDelta} from "./libraries/CurrencyDelta.sol";
import {NonzeroDeltaCount} from "./libraries/NonzeroDeltaCount.sol";
import {CurrencyReserves} from "./libraries/CurrencyReserves.sol";
import {Extsload} from "./Extsload.sol";
import {Exttload} from "./Exttload.sol";
import {CustomRevert} from "./libraries/CustomRevert.sol";
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/// @title PoolManager
/// @notice Holds the state for all pools
contract PoolManager is IPoolManager, ProtocolFees, NoDelegateCall, ERC6909Claims, Extsload, Exttload {
using SafeCast for *;
using Pool for *;
using Hooks for IHooks;
using Position for mapping(bytes32 => Position.State);
using CurrencyDelta for Currency;
using LPFeeLibrary for uint24;
using CurrencyReserves for Currency;
using CustomRevert for bytes4;
int24 private constant MAX_TICK_SPACING = TickMath.MAX_TICK_SPACING;
int24 private constant MIN_TICK_SPACING = TickMath.MIN_TICK_SPACING;
mapping(PoolId id => Pool.State) internal _pools;
/// @notice This will revert if the contract is locked
modifier onlyWhenUnlocked() {
if (!Lock.isUnlocked()) ManagerLocked.selector.revertWith();
_;
}
/// @inheritdoc IPoolManager
function unlock(bytes calldata data) external override returns (bytes memory result) {
if (Lock.isUnlocked()) AlreadyUnlocked.selector.revertWith();
Lock.unlock();
// the caller does everything in this callback, including paying what they owe via calls to settle
result = IUnlockCallback(msg.sender).unlockCallback(data);
if (NonzeroDeltaCount.read() != 0) CurrencyNotSettled.selector.revertWith();
Lock.lock();
}
/// @inheritdoc IPoolManager
function initialize(PoolKey memory key, uint160 sqrtPriceX96) external noDelegateCall returns (int24 tick) {
// see TickBitmap.sol for overflow conditions that can arise from tick spacing being too large
if (key.tickSpacing > MAX_TICK_SPACING) TickSpacingTooLarge.selector.revertWith(key.tickSpacing);
if (key.tickSpacing < MIN_TICK_SPACING) TickSpacingTooSmall.selector.revertWith(key.tickSpacing);
if (key.currency0 >= key.currency1) {
CurrenciesOutOfOrderOrEqual.selector.revertWith(
Currency.unwrap(key.currency0), Currency.unwrap(key.currency1)
);
}
if (!key.hooks.isValidHookAddress(key.fee)) Hooks.HookAddressNotValid.selector.revertWith(address(key.hooks));
uint24 lpFee = key.fee.getInitialLPFee();
key.hooks.beforeInitialize(key, sqrtPriceX96);
PoolId id = key.toId();
tick = _pools[id].initialize(sqrtPriceX96, lpFee);
key.hooks.afterInitialize(key, sqrtPriceX96, tick);
// emit all details of a pool key. poolkeys are not saved in storage and must always be provided by the caller
// the key's fee may be a static fee or a sentinel to denote a dynamic fee.
emit Initialize(id, key.currency0, key.currency1, key.fee, key.tickSpacing, key.hooks, sqrtPriceX96, tick);
}
/// @inheritdoc IPoolManager
function modifyLiquidity(
PoolKey memory key,
IPoolManager.ModifyLiquidityParams memory params,
bytes calldata hookData
) external onlyWhenUnlocked noDelegateCall returns (BalanceDelta callerDelta, BalanceDelta feesAccrued) {
PoolId id = key.toId();
{
Pool.State storage pool = _getPool(id);
pool.checkPoolInitialized();
key.hooks.beforeModifyLiquidity(key, params, hookData);
BalanceDelta principalDelta;
(principalDelta, feesAccrued) = pool.modifyLiquidity(
Pool.ModifyLiquidityParams({
owner: msg.sender,
tickLower: params.tickLower,
tickUpper: params.tickUpper,
liquidityDelta: params.liquidityDelta.toInt128(),
tickSpacing: key.tickSpacing,
salt: params.salt
})
);
// fee delta and principal delta are both accrued to the caller
callerDelta = principalDelta + feesAccrued;
}
// event is emitted before the afterModifyLiquidity call to ensure events are always emitted in order
emit ModifyLiquidity(id, msg.sender, params.tickLower, params.tickUpper, params.liquidityDelta, params.salt);
BalanceDelta hookDelta;
(callerDelta, hookDelta) = key.hooks.afterModifyLiquidity(key, params, callerDelta, feesAccrued, hookData);
// if the hook doesn't have the flag to be able to return deltas, hookDelta will always be 0
if (hookDelta != BalanceDeltaLibrary.ZERO_DELTA) _accountPoolBalanceDelta(key, hookDelta, address(key.hooks));
_accountPoolBalanceDelta(key, callerDelta, msg.sender);
}
/// @inheritdoc IPoolManager
function swap(PoolKey memory key, IPoolManager.SwapParams memory params, bytes calldata hookData)
external
onlyWhenUnlocked
noDelegateCall
returns (BalanceDelta swapDelta)
{
if (params.amountSpecified == 0) SwapAmountCannotBeZero.selector.revertWith();
PoolId id = key.toId();
Pool.State storage pool = _getPool(id);
pool.checkPoolInitialized();
BeforeSwapDelta beforeSwapDelta;
{
int256 amountToSwap;
uint24 lpFeeOverride;
(amountToSwap, beforeSwapDelta, lpFeeOverride) = key.hooks.beforeSwap(key, params, hookData);
// execute swap, account protocol fees, and emit swap event
// _swap is needed to avoid stack too deep error
swapDelta = _swap(
pool,
id,
Pool.SwapParams({
tickSpacing: key.tickSpacing,
zeroForOne: params.zeroForOne,
amountSpecified: amountToSwap,
sqrtPriceLimitX96: params.sqrtPriceLimitX96,
lpFeeOverride: lpFeeOverride
}),
params.zeroForOne ? key.currency0 : key.currency1 // input token
);
}
BalanceDelta hookDelta;
(swapDelta, hookDelta) = key.hooks.afterSwap(key, params, swapDelta, hookData, beforeSwapDelta);
// if the hook doesn't have the flag to be able to return deltas, hookDelta will always be 0
if (hookDelta != BalanceDeltaLibrary.ZERO_DELTA) _accountPoolBalanceDelta(key, hookDelta, address(key.hooks));
_accountPoolBalanceDelta(key, swapDelta, msg.sender);
}
/// @notice Internal swap function to execute a swap, take protocol fees on input token, and emit the swap event
function _swap(Pool.State storage pool, PoolId id, Pool.SwapParams memory params, Currency inputCurrency)
internal
returns (BalanceDelta)
{
(BalanceDelta delta, uint256 amountToProtocol, uint24 swapFee, Pool.SwapResult memory result) =
pool.swap(params);
// the fee is on the input currency
if (amountToProtocol > 0) _updateProtocolFees(inputCurrency, amountToProtocol);
// event is emitted before the afterSwap call to ensure events are always emitted in order
emit Swap(
id,
msg.sender,
delta.amount0(),
delta.amount1(),
result.sqrtPriceX96,
result.liquidity,
result.tick,
swapFee
);
return delta;
}
/// @inheritdoc IPoolManager
function donate(PoolKey memory key, uint256 amount0, uint256 amount1, bytes calldata hookData)
external
onlyWhenUnlocked
noDelegateCall
returns (BalanceDelta delta)
{
PoolId poolId = key.toId();
Pool.State storage pool = _getPool(poolId);
pool.checkPoolInitialized();
key.hooks.beforeDonate(key, amount0, amount1, hookData);
delta = pool.donate(amount0, amount1);
_accountPoolBalanceDelta(key, delta, msg.sender);
// event is emitted before the afterDonate call to ensure events are always emitted in order
emit Donate(poolId, msg.sender, amount0, amount1);
key.hooks.afterDonate(key, amount0, amount1, hookData);
}
/// @inheritdoc IPoolManager
function sync(Currency currency) external onlyWhenUnlocked {
// address(0) is used for the native currency
if (currency.isAddressZero()) {
// The reserves balance is not used for native settling, so we only need to reset the currency.
CurrencyReserves.resetCurrency();
} else {
uint256 balance = currency.balanceOfSelf();
CurrencyReserves.syncCurrencyAndReserves(currency, balance);
}
}
/// @inheritdoc IPoolManager
function take(Currency currency, address to, uint256 amount) external onlyWhenUnlocked {
unchecked {
// negation must be safe as amount is not negative
_accountDelta(currency, -(amount.toInt128()), msg.sender);
currency.transfer(to, amount);
}
}
/// @inheritdoc IPoolManager
function settle() external payable onlyWhenUnlocked returns (uint256) {
return _settle(msg.sender);
}
/// @inheritdoc IPoolManager
function settleFor(address recipient) external payable onlyWhenUnlocked returns (uint256) {
return _settle(recipient);
}
/// @inheritdoc IPoolManager
function clear(Currency currency, uint256 amount) external onlyWhenUnlocked {
int256 current = currency.getDelta(msg.sender);
// Because input is `uint256`, only positive amounts can be cleared.
int128 amountDelta = amount.toInt128();
if (amountDelta != current) MustClearExactPositiveDelta.selector.revertWith();
// negation must be safe as amountDelta is positive
unchecked {
_accountDelta(currency, -(amountDelta), msg.sender);
}
}
/// @inheritdoc IPoolManager
function mint(address to, uint256 id, uint256 amount) external onlyWhenUnlocked {
unchecked {
Currency currency = CurrencyLibrary.fromId(id);
// negation must be safe as amount is not negative
_accountDelta(currency, -(amount.toInt128()), msg.sender);
_mint(to, currency.toId(), amount);
}
}
/// @inheritdoc IPoolManager
function burn(address from, uint256 id, uint256 amount) external onlyWhenUnlocked {
Currency currency = CurrencyLibrary.fromId(id);
_accountDelta(currency, amount.toInt128(), msg.sender);
_burnFrom(from, currency.toId(), amount);
}
/// @inheritdoc IPoolManager
function updateDynamicLPFee(PoolKey memory key, uint24 newDynamicLPFee) external {
if (!key.fee.isDynamicFee() || msg.sender != address(key.hooks)) {
UnauthorizedDynamicLPFeeUpdate.selector.revertWith();
}
newDynamicLPFee.validate();
PoolId id = key.toId();
_pools[id].setLPFee(newDynamicLPFee);
}
function _settle(address recipient) internal returns (uint256 paid) {
Currency currency = CurrencyReserves.getSyncedCurrency();
// if not previously synced, or the syncedCurrency slot has been reset, expects native currency to be settled
if (currency.isAddressZero()) {
paid = msg.value;
} else {
if (msg.value > 0) NonzeroNativeValue.selector.revertWith();
// Reserves are guaranteed to be set because currency and reserves are always set together
uint256 reservesBefore = CurrencyReserves.getSyncedReserves();
uint256 reservesNow = currency.balanceOfSelf();
paid = reservesNow - reservesBefore;
CurrencyReserves.resetCurrency();
}
_accountDelta(currency, paid.toInt128(), recipient);
}
/// @notice Adds a balance delta in a currency for a target address
function _accountDelta(Currency currency, int128 delta, address target) internal {
if (delta == 0) return;
(int256 previous, int256 next) = currency.applyDelta(target, delta);
if (next == 0) {
NonzeroDeltaCount.decrement();
} else if (previous == 0) {
NonzeroDeltaCount.increment();
}
}
/// @notice Accounts the deltas of 2 currencies to a target address
function _accountPoolBalanceDelta(PoolKey memory key, BalanceDelta delta, address target) internal {
_accountDelta(key.currency0, delta.amount0(), target);
_accountDelta(key.currency1, delta.amount1(), target);
}
/// @notice Implementation of the _getPool function defined in ProtocolFees
function _getPool(PoolId id) internal view override returns (Pool.State storage) {
return _pools[id];
}
/// @notice Implementation of the _isUnlocked function defined in ProtocolFees
function _isUnlocked() internal view override returns (bool) {
return Lock.isUnlocked();
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {PoolKey} from "../types/PoolKey.sol";
import {IHooks} from "../interfaces/IHooks.sol";
import {SafeCast} from "./SafeCast.sol";
import {LPFeeLibrary} from "./LPFeeLibrary.sol";
import {BalanceDelta, toBalanceDelta, BalanceDeltaLibrary} from "../types/BalanceDelta.sol";
import {BeforeSwapDelta, BeforeSwapDeltaLibrary} from "../types/BeforeSwapDelta.sol";
import {IPoolManager} from "../interfaces/IPoolManager.sol";
import {ParseBytes} from "./ParseBytes.sol";
import {CustomRevert} from "./CustomRevert.sol";
/// @notice V4 decides whether to invoke specific hooks by inspecting the least significant bits
/// of the address that the hooks contract is deployed to.
/// For example, a hooks contract deployed to address: 0x0000000000000000000000000000000000002400
/// has the lowest bits '10 0100 0000 0000' which would cause the 'before initialize' and 'after add liquidity' hooks to be used.
library Hooks {
using LPFeeLibrary for uint24;
using Hooks for IHooks;
using SafeCast for int256;
using BeforeSwapDeltaLibrary for BeforeSwapDelta;
using ParseBytes for bytes;
using CustomRevert for bytes4;
uint160 internal constant ALL_HOOK_MASK = uint160((1 << 14) - 1);
uint160 internal constant BEFORE_INITIALIZE_FLAG = 1 << 13;
uint160 internal constant AFTER_INITIALIZE_FLAG = 1 << 12;
uint160 internal constant BEFORE_ADD_LIQUIDITY_FLAG = 1 << 11;
uint160 internal constant AFTER_ADD_LIQUIDITY_FLAG = 1 << 10;
uint160 internal constant BEFORE_REMOVE_LIQUIDITY_FLAG = 1 << 9;
uint160 internal constant AFTER_REMOVE_LIQUIDITY_FLAG = 1 << 8;
uint160 internal constant BEFORE_SWAP_FLAG = 1 << 7;
uint160 internal constant AFTER_SWAP_FLAG = 1 << 6;
uint160 internal constant BEFORE_DONATE_FLAG = 1 << 5;
uint160 internal constant AFTER_DONATE_FLAG = 1 << 4;
uint160 internal constant BEFORE_SWAP_RETURNS_DELTA_FLAG = 1 << 3;
uint160 internal constant AFTER_SWAP_RETURNS_DELTA_FLAG = 1 << 2;
uint160 internal constant AFTER_ADD_LIQUIDITY_RETURNS_DELTA_FLAG = 1 << 1;
uint160 internal constant AFTER_REMOVE_LIQUIDITY_RETURNS_DELTA_FLAG = 1 << 0;
struct Permissions {
bool beforeInitialize;
bool afterInitialize;
bool beforeAddLiquidity;
bool afterAddLiquidity;
bool beforeRemoveLiquidity;
bool afterRemoveLiquidity;
bool beforeSwap;
bool afterSwap;
bool beforeDonate;
bool afterDonate;
bool beforeSwapReturnDelta;
bool afterSwapReturnDelta;
bool afterAddLiquidityReturnDelta;
bool afterRemoveLiquidityReturnDelta;
}
/// @notice Thrown if the address will not lead to the specified hook calls being called
/// @param hooks The address of the hooks contract
error HookAddressNotValid(address hooks);
/// @notice Hook did not return its selector
error InvalidHookResponse();
/// @notice thrown when a hook call fails
/// @param revertReason bubbled up revert reason
error Wrap__FailedHookCall(address hook, bytes revertReason);
/// @notice The hook's delta changed the swap from exactIn to exactOut or vice versa
error HookDeltaExceedsSwapAmount();
/// @notice Utility function intended to be used in hook constructors to ensure
/// the deployed hooks address causes the intended hooks to be called
/// @param permissions The hooks that are intended to be called
/// @dev permissions param is memory as the function will be called from constructors
function validateHookPermissions(IHooks self, Permissions memory permissions) internal pure {
if (
permissions.beforeInitialize != self.hasPermission(BEFORE_INITIALIZE_FLAG)
|| permissions.afterInitialize != self.hasPermission(AFTER_INITIALIZE_FLAG)
|| permissions.beforeAddLiquidity != self.hasPermission(BEFORE_ADD_LIQUIDITY_FLAG)
|| permissions.afterAddLiquidity != self.hasPermission(AFTER_ADD_LIQUIDITY_FLAG)
|| permissions.beforeRemoveLiquidity != self.hasPermission(BEFORE_REMOVE_LIQUIDITY_FLAG)
|| permissions.afterRemoveLiquidity != self.hasPermission(AFTER_REMOVE_LIQUIDITY_FLAG)
|| permissions.beforeSwap != self.hasPermission(BEFORE_SWAP_FLAG)
|| permissions.afterSwap != self.hasPermission(AFTER_SWAP_FLAG)
|| permissions.beforeDonate != self.hasPermission(BEFORE_DONATE_FLAG)
|| permissions.afterDonate != self.hasPermission(AFTER_DONATE_FLAG)
|| permissions.beforeSwapReturnDelta != self.hasPermission(BEFORE_SWAP_RETURNS_DELTA_FLAG)
|| permissions.afterSwapReturnDelta != self.hasPermission(AFTER_SWAP_RETURNS_DELTA_FLAG)
|| permissions.afterAddLiquidityReturnDelta != self.hasPermission(AFTER_ADD_LIQUIDITY_RETURNS_DELTA_FLAG)
|| permissions.afterRemoveLiquidityReturnDelta
!= self.hasPermission(AFTER_REMOVE_LIQUIDITY_RETURNS_DELTA_FLAG)
) {
HookAddressNotValid.selector.revertWith(address(self));
}
}
/// @notice Ensures that the hook address includes at least one hook flag or dynamic fees, or is the 0 address
/// @param self The hook to verify
/// @param fee The fee of the pool the hook is used with
/// @return bool True if the hook address is valid
function isValidHookAddress(IHooks self, uint24 fee) internal pure returns (bool) {
// The hook can only have a flag to return a hook delta on an action if it also has the corresponding action flag
if (!self.hasPermission(BEFORE_SWAP_FLAG) && self.hasPermission(BEFORE_SWAP_RETURNS_DELTA_FLAG)) return false;
if (!self.hasPermission(AFTER_SWAP_FLAG) && self.hasPermission(AFTER_SWAP_RETURNS_DELTA_FLAG)) return false;
if (!self.hasPermission(AFTER_ADD_LIQUIDITY_FLAG) && self.hasPermission(AFTER_ADD_LIQUIDITY_RETURNS_DELTA_FLAG))
{
return false;
}
if (
!self.hasPermission(AFTER_REMOVE_LIQUIDITY_FLAG)
&& self.hasPermission(AFTER_REMOVE_LIQUIDITY_RETURNS_DELTA_FLAG)
) return false;
// If there is no hook contract set, then fee cannot be dynamic
// If a hook contract is set, it must have at least 1 flag set, or have a dynamic fee
return address(self) == address(0)
? !fee.isDynamicFee()
: (uint160(address(self)) & ALL_HOOK_MASK > 0 || fee.isDynamicFee());
}
/// @notice performs a hook call using the given calldata on the given hook that doesn't return a delta
/// @return result The complete data returned by the hook
function callHook(IHooks self, bytes memory data) internal returns (bytes memory result) {
bool success;
assembly ("memory-safe") {
success := call(gas(), self, 0, add(data, 0x20), mload(data), 0, 0)
}
// Revert with FailedHookCall, containing any error message to bubble up
if (!success) Wrap__FailedHookCall.selector.bubbleUpAndRevertWith(address(self));
// The call was successful, fetch the returned data
assembly ("memory-safe") {
// allocate result byte array from the free memory pointer
result := mload(0x40)
// store new free memory pointer at the end of the array padded to 32 bytes
mstore(0x40, add(result, and(add(returndatasize(), 0x3f), not(0x1f))))
// store length in memory
mstore(result, returndatasize())
// copy return data to result
returndatacopy(add(result, 0x20), 0, returndatasize())
}
// Length must be at least 32 to contain the selector. Check expected selector and returned selector match.
if (result.length < 32 || result.parseSelector() != data.parseSelector()) {
InvalidHookResponse.selector.revertWith();
}
}
/// @notice performs a hook call using the given calldata on the given hook
/// @return int256 The delta returned by the hook
function callHookWithReturnDelta(IHooks self, bytes memory data, bool parseReturn) internal returns (int256) {
bytes memory result = callHook(self, data);
// If this hook wasnt meant to return something, default to 0 delta
if (!parseReturn) return 0;
// A length of 64 bytes is required to return a bytes4, and a 32 byte delta
if (result.length != 64) InvalidHookResponse.selector.revertWith();
return result.parseReturnDelta();
}
/// @notice modifier to prevent calling a hook if they initiated the action
modifier noSelfCall(IHooks self) {
if (msg.sender != address(self)) {
_;
}
}
/// @notice calls beforeInitialize hook if permissioned and validates return value
function beforeInitialize(IHooks self, PoolKey memory key, uint160 sqrtPriceX96) internal noSelfCall(self) {
if (self.hasPermission(BEFORE_INITIALIZE_FLAG)) {
self.callHook(abi.encodeCall(IHooks.beforeInitialize, (msg.sender, key, sqrtPriceX96)));
}
}
/// @notice calls afterInitialize hook if permissioned and validates return value
function afterInitialize(IHooks self, PoolKey memory key, uint160 sqrtPriceX96, int24 tick)
internal
noSelfCall(self)
{
if (self.hasPermission(AFTER_INITIALIZE_FLAG)) {
self.callHook(abi.encodeCall(IHooks.afterInitialize, (msg.sender, key, sqrtPriceX96, tick)));
}
}
/// @notice calls beforeModifyLiquidity hook if permissioned and validates return value
function beforeModifyLiquidity(
IHooks self,
PoolKey memory key,
IPoolManager.ModifyLiquidityParams memory params,
bytes calldata hookData
) internal noSelfCall(self) {
if (params.liquidityDelta > 0 && self.hasPermission(BEFORE_ADD_LIQUIDITY_FLAG)) {
self.callHook(abi.encodeCall(IHooks.beforeAddLiquidity, (msg.sender, key, params, hookData)));
} else if (params.liquidityDelta <= 0 && self.hasPermission(BEFORE_REMOVE_LIQUIDITY_FLAG)) {
self.callHook(abi.encodeCall(IHooks.beforeRemoveLiquidity, (msg.sender, key, params, hookData)));
}
}
/// @notice calls afterModifyLiquidity hook if permissioned and validates return value
function afterModifyLiquidity(
IHooks self,
PoolKey memory key,
IPoolManager.ModifyLiquidityParams memory params,
BalanceDelta delta,
BalanceDelta feesAccrued,
bytes calldata hookData
) internal returns (BalanceDelta callerDelta, BalanceDelta hookDelta) {
if (msg.sender == address(self)) return (delta, BalanceDeltaLibrary.ZERO_DELTA);
callerDelta = delta;
if (params.liquidityDelta > 0) {
if (self.hasPermission(AFTER_ADD_LIQUIDITY_FLAG)) {
hookDelta = BalanceDelta.wrap(
self.callHookWithReturnDelta(
abi.encodeCall(
IHooks.afterAddLiquidity, (msg.sender, key, params, delta, feesAccrued, hookData)
),
self.hasPermission(AFTER_ADD_LIQUIDITY_RETURNS_DELTA_FLAG)
)
);
callerDelta = callerDelta - hookDelta;
}
} else {
if (self.hasPermission(AFTER_REMOVE_LIQUIDITY_FLAG)) {
hookDelta = BalanceDelta.wrap(
self.callHookWithReturnDelta(
abi.encodeCall(
IHooks.afterRemoveLiquidity, (msg.sender, key, params, delta, feesAccrued, hookData)
),
self.hasPermission(AFTER_REMOVE_LIQUIDITY_RETURNS_DELTA_FLAG)
)
);
callerDelta = callerDelta - hookDelta;
}
}
}
/// @notice calls beforeSwap hook if permissioned and validates return value
function beforeSwap(IHooks self, PoolKey memory key, IPoolManager.SwapParams memory params, bytes calldata hookData)
internal
returns (int256 amountToSwap, BeforeSwapDelta hookReturn, uint24 lpFeeOverride)
{
amountToSwap = params.amountSpecified;
if (msg.sender == address(self)) return (amountToSwap, BeforeSwapDeltaLibrary.ZERO_DELTA, lpFeeOverride);
if (self.hasPermission(BEFORE_SWAP_FLAG)) {
bytes memory result = callHook(self, abi.encodeCall(IHooks.beforeSwap, (msg.sender, key, params, hookData)));
// A length of 96 bytes is required to return a bytes4, a 32 byte delta, and an LP fee
if (result.length != 96) InvalidHookResponse.selector.revertWith();
// dynamic fee pools that do not want to override the cache fee, return 0 otherwise they return a valid fee with the override flag
if (key.fee.isDynamicFee()) lpFeeOverride = result.parseFee();
// skip this logic for the case where the hook return is 0
if (self.hasPermission(BEFORE_SWAP_RETURNS_DELTA_FLAG)) {
hookReturn = BeforeSwapDelta.wrap(result.parseReturnDelta());
// any return in unspecified is passed to the afterSwap hook for handling
int128 hookDeltaSpecified = hookReturn.getSpecifiedDelta();
// Update the swap amount according to the hook's return, and check that the swap type doesn't change (exact input/output)
if (hookDeltaSpecified != 0) {
bool exactInput = amountToSwap < 0;
amountToSwap += hookDeltaSpecified;
if (exactInput ? amountToSwap > 0 : amountToSwap < 0) {
HookDeltaExceedsSwapAmount.selector.revertWith();
}
}
}
}
}
/// @notice calls afterSwap hook if permissioned and validates return value
function afterSwap(
IHooks self,
PoolKey memory key,
IPoolManager.SwapParams memory params,
BalanceDelta swapDelta,
bytes calldata hookData,
BeforeSwapDelta beforeSwapHookReturn
) internal returns (BalanceDelta, BalanceDelta) {
if (msg.sender == address(self)) return (swapDelta, BalanceDeltaLibrary.ZERO_DELTA);
int128 hookDeltaSpecified = beforeSwapHookReturn.getSpecifiedDelta();
int128 hookDeltaUnspecified = beforeSwapHookReturn.getUnspecifiedDelta();
if (self.hasPermission(AFTER_SWAP_FLAG)) {
hookDeltaUnspecified += self.callHookWithReturnDelta(
abi.encodeCall(IHooks.afterSwap, (msg.sender, key, params, swapDelta, hookData)),
self.hasPermission(AFTER_SWAP_RETURNS_DELTA_FLAG)
).toInt128();
}
BalanceDelta hookDelta;
if (hookDeltaUnspecified != 0 || hookDeltaSpecified != 0) {
hookDelta = (params.amountSpecified < 0 == params.zeroForOne)
? toBalanceDelta(hookDeltaSpecified, hookDeltaUnspecified)
: toBalanceDelta(hookDeltaUnspecified, hookDeltaSpecified);
// the caller has to pay for (or receive) the hook's delta
swapDelta = swapDelta - hookDelta;
}
return (swapDelta, hookDelta);
}
/// @notice calls beforeDonate hook if permissioned and validates return value
function beforeDonate(IHooks self, PoolKey memory key, uint256 amount0, uint256 amount1, bytes calldata hookData)
internal
noSelfCall(self)
{
if (self.hasPermission(BEFORE_DONATE_FLAG)) {
self.callHook(abi.encodeCall(IHooks.beforeDonate, (msg.sender, key, amount0, amount1, hookData)));
}
}
/// @notice calls afterDonate hook if permissioned and validates return value
function afterDonate(IHooks self, PoolKey memory key, uint256 amount0, uint256 amount1, bytes calldata hookData)
internal
noSelfCall(self)
{
if (self.hasPermission(AFTER_DONATE_FLAG)) {
self.callHook(abi.encodeCall(IHooks.afterDonate, (msg.sender, key, amount0, amount1, hookData)));
}
}
function hasPermission(IHooks self, uint160 flag) internal pure returns (bool) {
return uint160(address(self)) & flag != 0;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {SafeCast} from "./SafeCast.sol";
import {TickBitmap} from "./TickBitmap.sol";
import {Position} from "./Position.sol";
import {UnsafeMath} from "./UnsafeMath.sol";
import {FixedPoint128} from "./FixedPoint128.sol";
import {TickMath} from "./TickMath.sol";
import {SqrtPriceMath} from "./SqrtPriceMath.sol";
import {SwapMath} from "./SwapMath.sol";
import {BalanceDelta, toBalanceDelta, BalanceDeltaLibrary} from "../types/BalanceDelta.sol";
import {Slot0} from "../types/Slot0.sol";
import {ProtocolFeeLibrary} from "./ProtocolFeeLibrary.sol";
import {LiquidityMath} from "./LiquidityMath.sol";
import {LPFeeLibrary} from "./LPFeeLibrary.sol";
import {CustomRevert} from "./CustomRevert.sol";
/// @notice a library with all actions that can be performed on a pool
library Pool {
using SafeCast for *;
using TickBitmap for mapping(int16 => uint256);
using Position for mapping(bytes32 => Position.State);
using Position for Position.State;
using Pool for State;
using ProtocolFeeLibrary for *;
using LPFeeLibrary for uint24;
using CustomRevert for bytes4;
/// @notice Thrown when tickLower is not below tickUpper
/// @param tickLower The invalid tickLower
/// @param tickUpper The invalid tickUpper
error TicksMisordered(int24 tickLower, int24 tickUpper);
/// @notice Thrown when tickLower is less than min tick
/// @param tickLower The invalid tickLower
error TickLowerOutOfBounds(int24 tickLower);
/// @notice Thrown when tickUpper exceeds max tick
/// @param tickUpper The invalid tickUpper
error TickUpperOutOfBounds(int24 tickUpper);
/// @notice For the tick spacing, the tick has too much liquidity
error TickLiquidityOverflow(int24 tick);
/// @notice Thrown when trying to initialize an already initialized pool
error PoolAlreadyInitialized();
/// @notice Thrown when trying to interact with a non-initialized pool
error PoolNotInitialized();
/// @notice Thrown when sqrtPriceLimitX96 on a swap has already exceeded its limit
/// @param sqrtPriceCurrentX96 The invalid, already surpassed sqrtPriceLimitX96
/// @param sqrtPriceLimitX96 The surpassed price limit
error PriceLimitAlreadyExceeded(uint160 sqrtPriceCurrentX96, uint160 sqrtPriceLimitX96);
/// @notice Thrown when sqrtPriceLimitX96 lies outside of valid tick/price range
/// @param sqrtPriceLimitX96 The invalid, out-of-bounds sqrtPriceLimitX96
error PriceLimitOutOfBounds(uint160 sqrtPriceLimitX96);
/// @notice Thrown by donate if there is currently 0 liquidity, since the fees will not go to any liquidity providers
error NoLiquidityToReceiveFees();
/// @notice Thrown when trying to swap with max lp fee and specifying an output amount
error InvalidFeeForExactOut();
// info stored for each initialized individual tick
struct TickInfo {
// the total position liquidity that references this tick
uint128 liquidityGross;
// amount of net liquidity added (subtracted) when tick is crossed from left to right (right to left),
int128 liquidityNet;
// fee growth 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
uint256 feeGrowthOutside0X128;
uint256 feeGrowthOutside1X128;
}
/// @dev The state of a pool
struct State {
Slot0 slot0;
uint256 feeGrowthGlobal0X128;
uint256 feeGrowthGlobal1X128;
uint128 liquidity;
mapping(int24 tick => TickInfo) ticks;
mapping(int16 wordPos => uint256) tickBitmap;
mapping(bytes32 positionKey => Position.State) positions;
}
/// @dev Common checks for valid tick inputs.
function checkTicks(int24 tickLower, int24 tickUpper) private pure {
if (tickLower >= tickUpper) TicksMisordered.selector.revertWith(tickLower, tickUpper);
if (tickLower < TickMath.MIN_TICK) TickLowerOutOfBounds.selector.revertWith(tickLower);
if (tickUpper > TickMath.MAX_TICK) TickUpperOutOfBounds.selector.revertWith(tickUpper);
}
function initialize(State storage self, uint160 sqrtPriceX96, uint24 lpFee) internal returns (int24 tick) {
if (self.slot0.sqrtPriceX96() != 0) PoolAlreadyInitialized.selector.revertWith();
tick = TickMath.getTickAtSqrtPrice(sqrtPriceX96);
// the initial protocolFee is 0 so doesn't need to be set
self.slot0 = Slot0.wrap(bytes32(0)).setSqrtPriceX96(sqrtPriceX96).setTick(tick).setLpFee(lpFee);
}
function setProtocolFee(State storage self, uint24 protocolFee) internal {
self.checkPoolInitialized();
self.slot0 = self.slot0.setProtocolFee(protocolFee);
}
/// @notice Only dynamic fee pools may update the lp fee.
function setLPFee(State storage self, uint24 lpFee) internal {
self.checkPoolInitialized();
self.slot0 = self.slot0.setLpFee(lpFee);
}
struct ModifyLiquidityParams {
// the address that owns the position
address owner;
// the lower and upper tick of the position
int24 tickLower;
int24 tickUpper;
// any change in liquidity
int128 liquidityDelta;
// the spacing between ticks
int24 tickSpacing;
// used to distinguish positions of the same owner, at the same tick range
bytes32 salt;
}
struct ModifyLiquidityState {
bool flippedLower;
uint128 liquidityGrossAfterLower;
bool flippedUpper;
uint128 liquidityGrossAfterUpper;
}
/// @notice Effect changes to a position in a pool
/// @dev PoolManager checks that the pool is initialized before calling
/// @param params the position details and the change to the position's liquidity to effect
/// @return delta the deltas of the token balances of the pool, from the liquidity change
/// @return feeDelta the fees generated by the liquidity range
function modifyLiquidity(State storage self, ModifyLiquidityParams memory params)
internal
returns (BalanceDelta delta, BalanceDelta feeDelta)
{
int128 liquidityDelta = params.liquidityDelta;
int24 tickLower = params.tickLower;
int24 tickUpper = params.tickUpper;
checkTicks(tickLower, tickUpper);
{
ModifyLiquidityState memory state;
// if we need to update the ticks, do it
if (liquidityDelta != 0) {
(state.flippedLower, state.liquidityGrossAfterLower) =
updateTick(self, tickLower, liquidityDelta, false);
(state.flippedUpper, state.liquidityGrossAfterUpper) = updateTick(self, tickUpper, liquidityDelta, true);
// `>` and `>=` are logically equivalent here but `>=` is cheaper
if (liquidityDelta >= 0) {
uint128 maxLiquidityPerTick = tickSpacingToMaxLiquidityPerTick(params.tickSpacing);
if (state.liquidityGrossAfterLower > maxLiquidityPerTick) {
TickLiquidityOverflow.selector.revertWith(tickLower);
}
if (state.liquidityGrossAfterUpper > maxLiquidityPerTick) {
TickLiquidityOverflow.selector.revertWith(tickUpper);
}
}
if (state.flippedLower) {
self.tickBitmap.flipTick(tickLower, params.tickSpacing);
}
if (state.flippedUpper) {
self.tickBitmap.flipTick(tickUpper, params.tickSpacing);
}
}
{
(uint256 feeGrowthInside0X128, uint256 feeGrowthInside1X128) =
getFeeGrowthInside(self, tickLower, tickUpper);
Position.State storage position = self.positions.get(params.owner, tickLower, tickUpper, params.salt);
(uint256 feesOwed0, uint256 feesOwed1) =
position.update(liquidityDelta, feeGrowthInside0X128, feeGrowthInside1X128);
// Fees earned from LPing are calculated, and returned
feeDelta = toBalanceDelta(feesOwed0.toInt128(), feesOwed1.toInt128());
}
// clear any tick data that is no longer needed
if (liquidityDelta < 0) {
if (state.flippedLower) {
clearTick(self, tickLower);
}
if (state.flippedUpper) {
clearTick(self, tickUpper);
}
}
}
if (liquidityDelta != 0) {
Slot0 _slot0 = self.slot0;
(int24 tick, uint160 sqrtPriceX96) = (_slot0.tick(), _slot0.sqrtPriceX96());
if (tick < tickLower) {
// current tick is below the passed range; liquidity can only become in range by crossing from left to
// right, when we'll need _more_ currency0 (it's becoming more valuable) so user must provide it
delta = toBalanceDelta(
SqrtPriceMath.getAmount0Delta(
TickMath.getSqrtPriceAtTick(tickLower), TickMath.getSqrtPriceAtTick(tickUpper), liquidityDelta
).toInt128(),
0
);
} else if (tick < tickUpper) {
delta = toBalanceDelta(
SqrtPriceMath.getAmount0Delta(sqrtPriceX96, TickMath.getSqrtPriceAtTick(tickUpper), liquidityDelta)
.toInt128(),
SqrtPriceMath.getAmount1Delta(TickMath.getSqrtPriceAtTick(tickLower), sqrtPriceX96, liquidityDelta)
.toInt128()
);
self.liquidity = LiquidityMath.addDelta(self.liquidity, liquidityDelta);
} else {
// current tick is above the passed range; liquidity can only become in range by crossing from right to
// left, when we'll need _more_ currency1 (it's becoming more valuable) so user must provide it
delta = toBalanceDelta(
0,
SqrtPriceMath.getAmount1Delta(
TickMath.getSqrtPriceAtTick(tickLower), TickMath.getSqrtPriceAtTick(tickUpper), liquidityDelta
).toInt128()
);
}
}
}
// Tracks the state of a pool throughout a swap, and returns these values at the end of the swap
struct SwapResult {
// the current sqrt(price)
uint160 sqrtPriceX96;
// the tick associated with the current price
int24 tick;
// the current liquidity in range
uint128 liquidity;
}
struct StepComputations {
// the price at the beginning of the step
uint160 sqrtPriceStartX96;
// the next tick to swap to from the current tick in the swap direction
int24 tickNext;
// whether tickNext is initialized or not
bool initialized;
// sqrt(price) for the next tick (1/0)
uint160 sqrtPriceNextX96;
// how much is being swapped in in this step
uint256 amountIn;
// how much is being swapped out
uint256 amountOut;
// how much fee is being paid in
uint256 feeAmount;
// the global fee growth of the input token. updated in storage at the end of swap
uint256 feeGrowthGlobalX128;
}
struct SwapParams {
int256 amountSpecified;
int24 tickSpacing;
bool zeroForOne;
uint160 sqrtPriceLimitX96;
uint24 lpFeeOverride;
}
/// @notice Executes a swap against the state, and returns the amount deltas of the pool
/// @dev PoolManager checks that the pool is initialized before calling
function swap(State storage self, SwapParams memory params)
internal
returns (BalanceDelta swapDelta, uint256 amountToProtocol, uint24 swapFee, SwapResult memory result)
{
Slot0 slot0Start = self.slot0;
bool zeroForOne = params.zeroForOne;
uint256 protocolFee =
zeroForOne ? slot0Start.protocolFee().getZeroForOneFee() : slot0Start.protocolFee().getOneForZeroFee();
// the amount remaining to be swapped in/out of the input/output asset. initially set to the amountSpecified
int256 amountSpecifiedRemaining = params.amountSpecified;
// the amount swapped out/in of the output/input asset. initially set to 0
int256 amountCalculated = 0;
// initialize to the current sqrt(price)
result.sqrtPriceX96 = slot0Start.sqrtPriceX96();
// initialize to the current tick
result.tick = slot0Start.tick();
// initialize to the current liquidity
result.liquidity = self.liquidity;
// if the beforeSwap hook returned a valid fee override, use that as the LP fee, otherwise load from storage
// lpFee, swapFee, and protocolFee are all in pips
{
uint24 lpFee = params.lpFeeOverride.isOverride()
? params.lpFeeOverride.removeOverrideFlagAndValidate()
: slot0Start.lpFee();
swapFee = protocolFee == 0 ? lpFee : uint16(protocolFee).calculateSwapFee(lpFee);
}
// a swap fee totaling MAX_SWAP_FEE (100%) makes exact output swaps impossible since the input is entirely consumed by the fee
if (swapFee >= SwapMath.MAX_SWAP_FEE) {
// if exactOutput
if (params.amountSpecified > 0) {
InvalidFeeForExactOut.selector.revertWith();
}
}
// swapFee is the pool's fee in pips (LP fee + protocol fee)
// when the amount swapped is 0, there is no protocolFee applied and the fee amount paid to the protocol is set to 0
if (params.amountSpecified == 0) return (BalanceDeltaLibrary.ZERO_DELTA, 0, swapFee, result);
if (zeroForOne) {
if (params.sqrtPriceLimitX96 >= slot0Start.sqrtPriceX96()) {
PriceLimitAlreadyExceeded.selector.revertWith(slot0Start.sqrtPriceX96(), params.sqrtPriceLimitX96);
}
// Swaps can never occur at MIN_TICK, only at MIN_TICK + 1, except at initialization of a pool
// Under certain circumstances outlined below, the tick will preemptively reach MIN_TICK without swapping there
if (params.sqrtPriceLimitX96 <= TickMath.MIN_SQRT_PRICE) {
PriceLimitOutOfBounds.selector.revertWith(params.sqrtPriceLimitX96);
}
} else {
if (params.sqrtPriceLimitX96 <= slot0Start.sqrtPriceX96()) {
PriceLimitAlreadyExceeded.selector.revertWith(slot0Start.sqrtPriceX96(), params.sqrtPriceLimitX96);
}
if (params.sqrtPriceLimitX96 >= TickMath.MAX_SQRT_PRICE) {
PriceLimitOutOfBounds.selector.revertWith(params.sqrtPriceLimitX96);
}
}
StepComputations memory step;
step.feeGrowthGlobalX128 = zeroForOne ? self.feeGrowthGlobal0X128 : self.feeGrowthGlobal1X128;
// continue swapping as long as we haven't used the entire input/output and haven't reached the price limit
while (!(amountSpecifiedRemaining == 0 || result.sqrtPriceX96 == params.sqrtPriceLimitX96)) {
step.sqrtPriceStartX96 = result.sqrtPriceX96;
(step.tickNext, step.initialized) =
self.tickBitmap.nextInitializedTickWithinOneWord(result.tick, params.tickSpacing, zeroForOne);
// ensure that we do not overshoot the min/max tick, as the tick bitmap is not aware of these bounds
if (step.tickNext <= TickMath.MIN_TICK) {
step.tickNext = TickMath.MIN_TICK;
}
if (step.tickNext >= TickMath.MAX_TICK) {
step.tickNext = TickMath.MAX_TICK;
}
// get the price for the next tick
step.sqrtPriceNextX96 = TickMath.getSqrtPriceAtTick(step.tickNext);
// compute values to swap to the target tick, price limit, or point where input/output amount is exhausted
(result.sqrtPriceX96, step.amountIn, step.amountOut, step.feeAmount) = SwapMath.computeSwapStep(
result.sqrtPriceX96,
SwapMath.getSqrtPriceTarget(zeroForOne, step.sqrtPriceNextX96, params.sqrtPriceLimitX96),
result.liquidity,
amountSpecifiedRemaining,
swapFee
);
// if exactOutput
if (params.amountSpecified > 0) {
unchecked {
amountSpecifiedRemaining -= step.amountOut.toInt256();
}
amountCalculated -= (step.amountIn + step.feeAmount).toInt256();
} else {
// safe because we test that amountSpecified > amountIn + feeAmount in SwapMath
unchecked {
amountSpecifiedRemaining += (step.amountIn + step.feeAmount).toInt256();
}
amountCalculated += step.amountOut.toInt256();
}
// if the protocol fee is on, calculate how much is owed, decrement feeAmount, and increment protocolFee
if (protocolFee > 0) {
unchecked {
// step.amountIn does not include the swap fee, as it's already been taken from it,
// so add it back to get the total amountIn and use that to calculate the amount of fees owed to the protocol
// this line cannot overflow due to limits on the size of protocolFee and params.amountSpecified
uint256 delta = (step.amountIn + step.feeAmount) * protocolFee / ProtocolFeeLibrary.PIPS_DENOMINATOR;
// subtract it from the total fee and add it to the protocol fee
step.feeAmount -= delta;
amountToProtocol += delta;
}
}
// update global fee tracker
if (result.liquidity > 0) {
unchecked {
// FullMath.mulDiv isn't needed as the numerator can't overflow uint256 since tokens have a max supply of type(uint128).max
step.feeGrowthGlobalX128 +=
UnsafeMath.simpleMulDiv(step.feeAmount, FixedPoint128.Q128, result.liquidity);
}
}
// Shift tick if we reached the next price, and preemptively decrement for zeroForOne swaps to tickNext - 1.
// If the swap doesn't continue (if amountRemaining == 0 or sqrtPriceLimit is met), slot0.tick will be 1 less
// than getTickAtSqrtPrice(slot0.sqrtPrice). This doesn't affect swaps, but donation calls should verify both
// price and tick to reward the correct LPs.
if (result.sqrtPriceX96 == step.sqrtPriceNextX96) {
// if the tick is initialized, run the tick transition
if (step.initialized) {
(uint256 feeGrowthGlobal0X128, uint256 feeGrowthGlobal1X128) = zeroForOne
? (step.feeGrowthGlobalX128, self.feeGrowthGlobal1X128)
: (self.feeGrowthGlobal0X128, step.feeGrowthGlobalX128);
int128 liquidityNet =
Pool.crossTick(self, step.tickNext, feeGrowthGlobal0X128, feeGrowthGlobal1X128);
// if we're moving leftward, we interpret liquidityNet as the opposite sign
// safe because liquidityNet cannot be type(int128).min
unchecked {
if (zeroForOne) liquidityNet = -liquidityNet;
}
result.liquidity = LiquidityMath.addDelta(result.liquidity, liquidityNet);
}
unchecked {
result.tick = zeroForOne ? step.tickNext - 1 : step.tickNext;
}
} else if (result.sqrtPriceX96 != step.sqrtPriceStartX96) {
// recompute unless we're on a lower tick boundary (i.e. already transitioned ticks), and haven't moved
result.tick = TickMath.getTickAtSqrtPrice(result.sqrtPriceX96);
}
}
self.slot0 = slot0Start.setTick(result.tick).setSqrtPriceX96(result.sqrtPriceX96);
// update liquidity if it changed
if (self.liquidity != result.liquidity) self.liquidity = result.liquidity;
// update fee growth global
if (!zeroForOne) {
self.feeGrowthGlobal1X128 = step.feeGrowthGlobalX128;
} else {
self.feeGrowthGlobal0X128 = step.feeGrowthGlobalX128;
}
unchecked {
// "if currency1 is specified"
if (zeroForOne != (params.amountSpecified < 0)) {
swapDelta = toBalanceDelta(
amountCalculated.toInt128(), (params.amountSpecified - amountSpecifiedRemaining).toInt128()
);
} else {
swapDelta = toBalanceDelta(
(params.amountSpecified - amountSpecifiedRemaining).toInt128(), amountCalculated.toInt128()
);
}
}
}
/// @notice Donates the given amount of currency0 and currency1 to the pool
function donate(State storage state, uint256 amount0, uint256 amount1) internal returns (BalanceDelta delta) {
uint128 liquidity = state.liquidity;
if (liquidity == 0) NoLiquidityToReceiveFees.selector.revertWith();
unchecked {
// negation safe as amount0 and amount1 are always positive
delta = toBalanceDelta(-(amount0.toInt128()), -(amount1.toInt128()));
// FullMath.mulDiv is unnecessary because the numerator is bounded by type(int128).max * Q128, which is less than type(uint256).max
if (amount0 > 0) {
state.feeGrowthGlobal0X128 += UnsafeMath.simpleMulDiv(amount0, FixedPoint128.Q128, liquidity);
}
if (amount1 > 0) {
state.feeGrowthGlobal1X128 += UnsafeMath.simpleMulDiv(amount1, FixedPoint128.Q128, liquidity);
}
}
}
/// @notice Retrieves fee growth data
/// @param self The Pool state struct
/// @param tickLower The lower tick boundary of the position
/// @param tickUpper The upper tick boundary of the position
/// @return feeGrowthInside0X128 The all-time fee growth in token0, per unit of liquidity, inside the position's tick boundaries
/// @return feeGrowthInside1X128 The all-time fee growth in token1, per unit of liquidity, inside the position's tick boundaries
function getFeeGrowthInside(State storage self, int24 tickLower, int24 tickUpper)
internal
view
returns (uint256 feeGrowthInside0X128, uint256 feeGrowthInside1X128)
{
TickInfo storage lower = self.ticks[tickLower];
TickInfo storage upper = self.ticks[tickUpper];
int24 tickCurrent = self.slot0.tick();
unchecked {
if (tickCurrent < tickLower) {
feeGrowthInside0X128 = lower.feeGrowthOutside0X128 - upper.feeGrowthOutside0X128;
feeGrowthInside1X128 = lower.feeGrowthOutside1X128 - upper.feeGrowthOutside1X128;
} else if (tickCurrent >= tickUpper) {
feeGrowthInside0X128 = upper.feeGrowthOutside0X128 - lower.feeGrowthOutside0X128;
feeGrowthInside1X128 = upper.feeGrowthOutside1X128 - lower.feeGrowthOutside1X128;
} else {
feeGrowthInside0X128 =
self.feeGrowthGlobal0X128 - lower.feeGrowthOutside0X128 - upper.feeGrowthOutside0X128;
feeGrowthInside1X128 =
self.feeGrowthGlobal1X128 - lower.feeGrowthOutside1X128 - upper.feeGrowthOutside1X128;
}
}
}
/// @notice Updates a tick and returns true if the tick was flipped from initialized to uninitialized, or vice versa
/// @param self The mapping containing all tick information for initialized ticks
/// @param tick The tick that will be updated
/// @param liquidityDelta A new amount of liquidity to be added (subtracted) when tick is crossed from left to right (right to left)
/// @param upper true for updating a position's upper tick, or false for updating a position's lower tick
/// @return flipped Whether the tick was flipped from initialized to uninitialized, or vice versa
/// @return liquidityGrossAfter The total amount of liquidity for all positions that references the tick after the update
function updateTick(State storage self, int24 tick, int128 liquidityDelta, bool upper)
internal
returns (bool flipped, uint128 liquidityGrossAfter)
{
TickInfo storage info = self.ticks[tick];
uint128 liquidityGrossBefore = info.liquidityGross;
int128 liquidityNetBefore = info.liquidityNet;
liquidityGrossAfter = LiquidityMath.addDelta(liquidityGrossBefore, liquidityDelta);
flipped = (liquidityGrossAfter == 0) != (liquidityGrossBefore == 0);
if (liquidityGrossBefore == 0) {
// by convention, we assume that all growth before a tick was initialized happened _below_ the tick
if (tick <= self.slot0.tick()) {
info.feeGrowthOutside0X128 = self.feeGrowthGlobal0X128;
info.feeGrowthOutside1X128 = self.feeGrowthGlobal1X128;
}
}
// when the lower (upper) tick is crossed left to right (right to left), liquidity must be added (removed)
int128 liquidityNet = upper ? liquidityNetBefore - liquidityDelta : liquidityNetBefore + liquidityDelta;
assembly ("memory-safe") {
// liquidityGrossAfter and liquidityNet are packed in the first slot of `info`
// So we can store them with a single sstore by packing them ourselves first
sstore(
info.slot,
// bitwise OR to pack liquidityGrossAfter and liquidityNet
or(
// Put liquidityGrossAfter in the lower bits, clearing out the upper bits
and(liquidityGrossAfter, 0xffffffffffffffffffffffffffffffff),
// Shift liquidityNet to put it in the upper bits (no need for signextend since we're shifting left)
shl(128, liquidityNet)
)
)
}
}
/// @notice Derives max liquidity per tick from given tick spacing
/// @dev Executed when adding liquidity
/// @param tickSpacing The amount of required tick separation, realized in multiples of `tickSpacing`
/// e.g., a tickSpacing of 3 requires ticks to be initialized every 3rd tick i.e., ..., -6, -3, 0, 3, 6, ...
/// @return result The max liquidity per tick
function tickSpacingToMaxLiquidityPerTick(int24 tickSpacing) internal pure returns (uint128 result) {
// Equivalent to:
// int24 minTick = (TickMath.MIN_TICK / tickSpacing);
// int24 maxTick = (TickMath.MAX_TICK / tickSpacing);
// uint24 numTicks = maxTick - minTick + 1;
// return type(uint128).max / numTicks;
int24 MAX_TICK = TickMath.MAX_TICK;
int24 MIN_TICK = TickMath.MIN_TICK;
// tick spacing will never be 0 since TickMath.MIN_TICK_SPACING is 1
assembly ("memory-safe") {
tickSpacing := signextend(2, tickSpacing)
let minTick := sub(sdiv(MIN_TICK, tickSpacing), slt(smod(MIN_TICK, tickSpacing), 0))
let maxTick := sdiv(MAX_TICK, tickSpacing)
let numTicks := add(sub(maxTick, minTick), 1)
result := div(sub(shl(128, 1), 1), numTicks)
}
}
/// @notice Reverts if the given pool has not been initialized
function checkPoolInitialized(State storage self) internal view {
if (self.slot0.sqrtPriceX96() == 0) PoolNotInitialized.selector.revertWith();
}
/// @notice Clears tick data
/// @param self The mapping containing all initialized tick information for initialized ticks
/// @param tick The tick that will be cleared
function clearTick(State storage self, int24 tick) internal {
delete self.ticks[tick];
}
/// @notice Transitions to next tick as needed by price movement
/// @param self The Pool state struct
/// @param tick The destination tick of the transition
/// @param feeGrowthGlobal0X128 The all-time global fee growth, per unit of liquidity, in token0
/// @param feeGrowthGlobal1X128 The all-time global fee growth, per unit of liquidity, in token1
/// @return liquidityNet The amount of liquidity added (subtracted) when tick is crossed from left to right (right to left)
function crossTick(State storage self, int24 tick, uint256 feeGrowthGlobal0X128, uint256 feeGrowthGlobal1X128)
internal
returns (int128 liquidityNet)
{
unchecked {
TickInfo storage info = self.ticks[tick];
info.feeGrowthOutside0X128 = feeGrowthGlobal0X128 - info.feeGrowthOutside0X128;
info.feeGrowthOutside1X128 = feeGrowthGlobal1X128 - info.feeGrowthOutside1X128;
liquidityNet = info.liquidityNet;
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {CustomRevert} from "./CustomRevert.sol";
/// @title Safe casting methods
/// @notice Contains methods for safely casting between types
library SafeCast {
using CustomRevert for bytes4;
error SafeCastOverflow();
/// @notice Cast a uint256 to a uint160, revert on overflow
/// @param x The uint256 to be downcasted
/// @return y The downcasted integer, now type uint160
function toUint160(uint256 x) internal pure returns (uint160 y) {
y = uint160(x);
if (y != x) SafeCastOverflow.selector.revertWith();
}
/// @notice Cast a uint256 to a uint128, revert on overflow
/// @param x The uint256 to be downcasted
/// @return y The downcasted integer, now type uint128
function toUint128(uint256 x) internal pure returns (uint128 y) {
y = uint128(x);
if (x != y) SafeCastOverflow.selector.revertWith();
}
/// @notice Cast a int128 to a uint128, revert on overflow or underflow
/// @param x The int128 to be casted
/// @return y The casted integer, now type uint128
function toUint128(int128 x) internal pure returns (uint128 y) {
if (x < 0) SafeCastOverflow.selector.revertWith();
y = uint128(x);
}
/// @notice Cast a int256 to a int128, revert on overflow or underflow
/// @param x The int256 to be downcasted
/// @return y The downcasted integer, now type int128
function toInt128(int256 x) internal pure returns (int128 y) {
y = int128(x);
if (y != x) SafeCastOverflow.selector.revertWith();
}
/// @notice Cast a uint256 to a int256, revert on overflow
/// @param x The uint256 to be casted
/// @return y The casted integer, now type int256
function toInt256(uint256 x) internal pure returns (int256 y) {
y = int256(x);
if (y < 0) SafeCastOverflow.selector.revertWith();
}
/// @notice Cast a uint256 to a int128, revert on overflow
/// @param x The uint256 to be downcasted
/// @return The downcasted integer, now type int128
function toInt128(uint256 x) internal pure returns (int128) {
if (x >= 1 << 127) SafeCastOverflow.selector.revertWith();
return int128(int256(x));
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {FullMath} from "./FullMath.sol";
import {FixedPoint128} from "./FixedPoint128.sol";
import {LiquidityMath} from "./LiquidityMath.sol";
import {CustomRevert} from "./CustomRevert.sol";
/// @title Position
/// @notice Positions represent an owner address' liquidity between a lower and upper tick boundary
/// @dev Positions store additional state for tracking fees owed to the position
library Position {
using CustomRevert for bytes4;
/// @notice Cannot update a position with no liquidity
error CannotUpdateEmptyPosition();
// info stored for each user's position
struct State {
// the amount of liquidity owned by this position
uint128 liquidity;
// fee growth per unit of liquidity as of the last update to liquidity or fees owed
uint256 feeGrowthInside0LastX128;
uint256 feeGrowthInside1LastX128;
}
/// @notice Returns the State struct of a position, given an owner and position boundaries
/// @param self The mapping containing all user positions
/// @param owner The address of the position owner
/// @param tickLower The lower tick boundary of the position
/// @param tickUpper The upper tick boundary of the position
/// @param salt A unique value to differentiate between multiple positions in the same range
/// @return position The position info struct of the given owners' position
function get(mapping(bytes32 => State) storage self, address owner, int24 tickLower, int24 tickUpper, bytes32 salt)
internal
view
returns (State storage position)
{
bytes32 positionKey = calculatePositionKey(owner, tickLower, tickUpper, salt);
position = self[positionKey];
}
/// @notice A helper function to calculate the position key
/// @param owner The address of the position owner
/// @param tickLower the lower tick boundary of the position
/// @param tickUpper the upper tick boundary of the position
/// @param salt A unique value to differentiate between multiple positions in the same range, by the same owner. Passed in by the caller.
function calculatePositionKey(address owner, int24 tickLower, int24 tickUpper, bytes32 salt)
internal
pure
returns (bytes32 positionKey)
{
// positionKey = keccak256(abi.encodePacked(owner, tickLower, tickUpper, salt))
assembly ("memory-safe") {
let fmp := mload(0x40)
mstore(add(fmp, 0x26), salt) // [0x26, 0x46)
mstore(add(fmp, 0x06), tickUpper) // [0x23, 0x26)
mstore(add(fmp, 0x03), tickLower) // [0x20, 0x23)
mstore(fmp, owner) // [0x0c, 0x20)
positionKey := keccak256(add(fmp, 0x0c), 0x3a) // len is 58 bytes
// now clean the memory we used
mstore(add(fmp, 0x40), 0) // fmp+0x40 held salt
mstore(add(fmp, 0x20), 0) // fmp+0x20 held tickLower, tickUpper, salt
mstore(fmp, 0) // fmp held owner
}
}
/// @notice Credits accumulated fees to a user's position
/// @param self The individual position to update
/// @param liquidityDelta The change in pool liquidity as a result of the position update
/// @param feeGrowthInside0X128 The all-time fee growth in currency0, per unit of liquidity, inside the position's tick boundaries
/// @param feeGrowthInside1X128 The all-time fee growth in currency1, per unit of liquidity, inside the position's tick boundaries
/// @return feesOwed0 The amount of currency0 owed to the position owner
/// @return feesOwed1 The amount of currency1 owed to the position owner
function update(
State storage self,
int128 liquidityDelta,
uint256 feeGrowthInside0X128,
uint256 feeGrowthInside1X128
) internal returns (uint256 feesOwed0, uint256 feesOwed1) {
uint128 liquidity = self.liquidity;
if (liquidityDelta == 0) {
// disallow pokes for 0 liquidity positions
if (liquidity == 0) CannotUpdateEmptyPosition.selector.revertWith();
} else {
self.liquidity = LiquidityMath.addDelta(liquidity, liquidityDelta);
}
// calculate accumulated fees. overflow in the subtraction of fee growth is expected
unchecked {
feesOwed0 =
FullMath.mulDiv(feeGrowthInside0X128 - self.feeGrowthInside0LastX128, liquidity, FixedPoint128.Q128);
feesOwed1 =
FullMath.mulDiv(feeGrowthInside1X128 - self.feeGrowthInside1LastX128, liquidity, FixedPoint128.Q128);
}
// update the position
self.feeGrowthInside0LastX128 = feeGrowthInside0X128;
self.feeGrowthInside1LastX128 = feeGrowthInside1X128;
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {CustomRevert} from "./CustomRevert.sol";
/// @notice Library of helper functions for a pools LP fee
library LPFeeLibrary {
using LPFeeLibrary for uint24;
using CustomRevert for bytes4;
/// @notice Thrown when the static or dynamic fee on a pool exceeds 100%.
error LPFeeTooLarge(uint24 fee);
/// @notice An lp fee of exactly 0b1000000... signals a dynamic fee pool. This isnt a valid static fee as it is > MAX_LP_FEE
uint24 public constant DYNAMIC_FEE_FLAG = 0x800000;
/// @notice the second bit of the fee returned by beforeSwap is used to signal if the stored LP fee should be overridden in this swap
// only dynamic-fee pools can return a fee via the beforeSwap hook
uint24 public constant OVERRIDE_FEE_FLAG = 0x400000;
/// @notice mask to remove the override fee flag from a fee returned by the beforeSwaphook
uint24 public constant REMOVE_OVERRIDE_MASK = 0xBFFFFF;
/// @notice the lp fee is represented in hundredths of a bip, so the max is 100%
uint24 public constant MAX_LP_FEE = 1000000;
/// @notice returns true if a pool's LP fee signals that the pool has a dynamic fee
/// @param self The fee to check
/// @return bool True of the fee is dynamic
function isDynamicFee(uint24 self) internal pure returns (bool) {
return self == DYNAMIC_FEE_FLAG;
}
/// @notice returns true if an LP fee is valid, aka not above the maximum permitted fee
/// @param self The fee to check
/// @return bool True of the fee is valid
function isValid(uint24 self) internal pure returns (bool) {
return self <= MAX_LP_FEE;
}
/// @notice validates whether an LP fee is larger than the maximum, and reverts if invalid
/// @param self The fee to validate
function validate(uint24 self) internal pure {
if (!self.isValid()) LPFeeTooLarge.selector.revertWith(self);
}
/// @notice gets and validates the initial LP fee for a pool. Dynamic fee pools have an initial fee of 0.
/// @dev if a dynamic fee pool wants a non-0 initial fee, it should call `updateDynamicLPFee` in the afterInitialize hook
/// @param self The fee to get the initial LP from
/// @return initialFee 0 if the fee is dynamic, otherwise the fee (if valid)
function getInitialLPFee(uint24 self) internal pure returns (uint24) {
// the initial fee for a dynamic fee pool is 0
if (self.isDynamicFee()) return 0;
self.validate();
return self;
}
/// @notice returns true if the fee has the override flag set (2nd highest bit of the uint24)
/// @param self The fee to check
/// @return bool True of the fee has the override flag set
function isOverride(uint24 self) internal pure returns (bool) {
return self & OVERRIDE_FEE_FLAG != 0;
}
/// @notice returns a fee with the override flag removed
/// @param self The fee to remove the override flag from
/// @return fee The fee without the override flag set
function removeOverrideFlag(uint24 self) internal pure returns (uint24) {
return self & REMOVE_OVERRIDE_MASK;
}
/// @notice Removes the override flag and validates the fee (reverts if the fee is too large)
/// @param self The fee to remove the override flag from, and then validate
/// @return fee The fee without the override flag set (if valid)
function removeOverrideFlagAndValidate(uint24 self) internal pure returns (uint24 fee) {
fee = self.removeOverrideFlag();
fee.validate();
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {IERC20Minimal} from "../interfaces/external/IERC20Minimal.sol";
import {CustomRevert} from "../libraries/CustomRevert.sol";
type Currency is address;
using {greaterThan as >, lessThan as <, greaterThanOrEqualTo as >=, equals as ==} for Currency global;
using CurrencyLibrary for Currency global;
function equals(Currency currency, Currency other) pure returns (bool) {
return Currency.unwrap(currency) == Currency.unwrap(other);
}
function greaterThan(Currency currency, Currency other) pure returns (bool) {
return Currency.unwrap(currency) > Currency.unwrap(other);
}
function lessThan(Currency currency, Currency other) pure returns (bool) {
return Currency.unwrap(currency) < Currency.unwrap(other);
}
function greaterThanOrEqualTo(Currency currency, Currency other) pure returns (bool) {
return Currency.unwrap(currency) >= Currency.unwrap(other);
}
/// @title CurrencyLibrary
/// @dev This library allows for transferring and holding native tokens and ERC20 tokens
library CurrencyLibrary {
using CustomRevert for bytes4;
/// @notice Thrown when a native transfer fails
/// @param reason bubbled up revert reason
error Wrap__NativeTransferFailed(address recipient, bytes reason);
/// @notice Thrown when an ERC20 transfer fails
/// @param reason bubbled up revert reason
error Wrap__ERC20TransferFailed(address token, bytes reason);
/// @notice A constant to represent the native currency
Currency public constant ADDRESS_ZERO = Currency.wrap(address(0));
function transfer(Currency currency, address to, uint256 amount) internal {
// altered from https://github.com/transmissions11/solmate/blob/44a9963d4c78111f77caa0e65d677b8b46d6f2e6/src/utils/SafeTransferLib.sol
// modified custom error selectors
bool success;
if (currency.isAddressZero()) {
assembly ("memory-safe") {
// Transfer the ETH and revert if it fails.
success := call(gas(), to, amount, 0, 0, 0, 0)
}
// revert with NativeTransferFailed, containing the bubbled up error as an argument
if (!success) Wrap__NativeTransferFailed.selector.bubbleUpAndRevertWith(to);
} else {
assembly ("memory-safe") {
// Get a pointer to some free memory.
let fmp := mload(0x40)
// Write the abi-encoded calldata into memory, beginning with the function selector.
mstore(fmp, 0xa9059cbb00000000000000000000000000000000000000000000000000000000)
mstore(add(fmp, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
mstore(add(fmp, 36), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.
success :=
and(
// Set success to whether the call reverted, if not we check it either
// returned exactly 1 (can't just be non-zero data), or had no return data.
or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
// We use 68 because the length of our calldata totals up like so: 4 + 32 * 2.
// We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
// Counterintuitively, this call must be positioned second to the or() call in the
// surrounding and() call or else returndatasize() will be zero during the computation.
call(gas(), currency, 0, fmp, 68, 0, 32)
)
// Now clean the memory we used
mstore(fmp, 0) // 4 byte `selector` and 28 bytes of `to` were stored here
mstore(add(fmp, 0x20), 0) // 4 bytes of `to` and 28 bytes of `amount` were stored here
mstore(add(fmp, 0x40), 0) // 4 bytes of `amount` were stored here
}
// revert with ERC20TransferFailed, containing the bubbled up error as an argument
if (!success) Wrap__ERC20TransferFailed.selector.bubbleUpAndRevertWith(Currency.unwrap(currency));
}
}
function balanceOfSelf(Currency currency) internal view returns (uint256) {
if (currency.isAddressZero()) {
return address(this).balance;
} else {
return IERC20Minimal(Currency.unwrap(currency)).balanceOf(address(this));
}
}
function balanceOf(Currency currency, address owner) internal view returns (uint256) {
if (currency.isAddressZero()) {
return owner.balance;
} else {
return IERC20Minimal(Currency.unwrap(currency)).balanceOf(owner);
}
}
function isAddressZero(Currency currency) internal pure returns (bool) {
return Currency.unwrap(currency) == Currency.unwrap(ADDRESS_ZERO);
}
function toId(Currency currency) internal pure returns (uint256) {
return uint160(Currency.unwrap(currency));
}
// If the upper 12 bytes are non-zero, they will be zero-ed out
// Therefore, fromId() and toId() are not inverses of each other
function fromId(uint256 id) internal pure returns (Currency) {
return Currency.wrap(address(uint160(id)));
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {Currency} from "./Currency.sol";
import {IHooks} from "../interfaces/IHooks.sol";
import {PoolIdLibrary} from "./PoolId.sol";
using PoolIdLibrary for PoolKey global;
/// @notice Returns the key for identifying a pool
struct PoolKey {
/// @notice The lower currency of the pool, sorted numerically
Currency currency0;
/// @notice The higher currency of the pool, sorted numerically
Currency currency1;
/// @notice The pool LP fee, capped at 1_000_000. If the highest bit is 1, the pool has a dynamic fee and must be exactly equal to 0x800000
uint24 fee;
/// @notice Ticks that involve positions must be a multiple of tick spacing
int24 tickSpacing;
/// @notice The hooks of the pool
IHooks hooks;
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {BitMath} from "./BitMath.sol";
import {CustomRevert} from "./CustomRevert.sol";
/// @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 {
using CustomRevert for bytes4;
/// @notice Thrown when the tick passed to #getSqrtPriceAtTick is not between MIN_TICK and MAX_TICK
error InvalidTick(int24 tick);
/// @notice Thrown when the price passed to #getTickAtSqrtPrice does not correspond to a price between MIN_TICK and MAX_TICK
error InvalidSqrtPrice(uint160 sqrtPriceX96);
/// @dev The minimum tick that may be passed to #getSqrtPriceAtTick computed from log base 1.0001 of 2**-128
/// @dev If ever MIN_TICK and MAX_TICK are not centered around 0, the absTick logic in getSqrtPriceAtTick cannot be used
int24 internal constant MIN_TICK = -887272;
/// @dev The maximum tick that may be passed to #getSqrtPriceAtTick computed from log base 1.0001 of 2**128
/// @dev If ever MIN_TICK and MAX_TICK are not centered around 0, the absTick logic in getSqrtPriceAtTick cannot be used
int24 internal constant MAX_TICK = 887272;
/// @dev The minimum tick spacing value drawn from the range of type int16 that is greater than 0, i.e. min from the range [1, 32767]
int24 internal constant MIN_TICK_SPACING = 1;
/// @dev The maximum tick spacing value drawn from the range of type int16, i.e. max from the range [1, 32767]
int24 internal constant MAX_TICK_SPACING = type(int16).max;
/// @dev The minimum value that can be returned from #getSqrtPriceAtTick. Equivalent to getSqrtPriceAtTick(MIN_TICK)
uint160 internal constant MIN_SQRT_PRICE = 4295128739;
/// @dev The maximum value that can be returned from #getSqrtPriceAtTick. Equivalent to getSqrtPriceAtTick(MAX_TICK)
uint160 internal constant MAX_SQRT_PRICE = 1461446703485210103287273052203988822378723970342;
/// @dev A threshold used for optimized bounds check, equals `MAX_SQRT_PRICE - MIN_SQRT_PRICE - 1`
uint160 internal constant MAX_SQRT_PRICE_MINUS_MIN_SQRT_PRICE_MINUS_ONE =
1461446703485210103287273052203988822378723970342 - 4295128739 - 1;
/// @notice Given a tickSpacing, compute the maximum usable tick
function maxUsableTick(int24 tickSpacing) internal pure returns (int24) {
unchecked {
return (MAX_TICK / tickSpacing) * tickSpacing;
}
}
/// @notice Given a tickSpacing, compute the minimum usable tick
function minUsableTick(int24 tickSpacing) internal pure returns (int24) {
unchecked {
return (MIN_TICK / tickSpacing) * tickSpacing;
}
}
/// @notice Calculates sqrt(1.0001^tick) * 2^96
/// @dev Throws if |tick| > max tick
/// @param tick The input tick for the above formula
/// @return sqrtPriceX96 A Fixed point Q64.96 number representing the sqrt of the price of the two assets (currency1/currency0)
/// at the given tick
function getSqrtPriceAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {
unchecked {
uint256 absTick;
assembly ("memory-safe") {
tick := signextend(2, tick)
// mask = 0 if tick >= 0 else -1 (all 1s)
let mask := sar(255, tick)
// if tick >= 0, |tick| = tick = 0 ^ tick
// if tick < 0, |tick| = ~~|tick| = ~(-|tick| - 1) = ~(tick - 1) = (-1) ^ (tick - 1)
// either way, |tick| = mask ^ (tick + mask)
absTick := xor(mask, add(mask, tick))
}
if (absTick > uint256(int256(MAX_TICK))) InvalidTick.selector.revertWith(tick);
// The tick is decomposed into bits, and for each bit with index i that is set, the product of 1/sqrt(1.0001^(2^i))
// is calculated (using Q128.128). The constants used for this calculation are rounded to the nearest integer
// Equivalent to:
// price = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000;
// or price = int(2**128 / sqrt(1.0001)) if (absTick & 0x1) else 1 << 128
uint256 price;
assembly ("memory-safe") {
price := xor(shl(128, 1), mul(xor(shl(128, 1), 0xfffcb933bd6fad37aa2d162d1a594001), and(absTick, 0x1)))
}
if (absTick & 0x2 != 0) price = (price * 0xfff97272373d413259a46990580e213a) >> 128;
if (absTick & 0x4 != 0) price = (price * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128;
if (absTick & 0x8 != 0) price = (price * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128;
if (absTick & 0x10 != 0) price = (price * 0xffcb9843d60f6159c9db58835c926644) >> 128;
if (absTick & 0x20 != 0) price = (price * 0xff973b41fa98c081472e6896dfb254c0) >> 128;
if (absTick & 0x40 != 0) price = (price * 0xff2ea16466c96a3843ec78b326b52861) >> 128;
if (absTick & 0x80 != 0) price = (price * 0xfe5dee046a99a2a811c461f1969c3053) >> 128;
if (absTick & 0x100 != 0) price = (price * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128;
if (absTick & 0x200 != 0) price = (price * 0xf987a7253ac413176f2b074cf7815e54) >> 128;
if (absTick & 0x400 != 0) price = (price * 0xf3392b0822b70005940c7a398e4b70f3) >> 128;
if (absTick & 0x800 != 0) price = (price * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128;
if (absTick & 0x1000 != 0) price = (price * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128;
if (absTick & 0x2000 != 0) price = (price * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128;
if (absTick & 0x4000 != 0) price = (price * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128;
if (absTick & 0x8000 != 0) price = (price * 0x31be135f97d08fd981231505542fcfa6) >> 128;
if (absTick & 0x10000 != 0) price = (price * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128;
if (absTick & 0x20000 != 0) price = (price * 0x5d6af8dedb81196699c329225ee604) >> 128;
if (absTick & 0x40000 != 0) price = (price * 0x2216e584f5fa1ea926041bedfe98) >> 128;
if (absTick & 0x80000 != 0) price = (price * 0x48a170391f7dc42444e8fa2) >> 128;
assembly ("memory-safe") {
// if (tick > 0) price = type(uint256).max / price;
if sgt(tick, 0) { price := div(not(0), price) }
// 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 getTickAtSqrtPrice of the output price is always consistent
// `sub(shl(32, 1), 1)` is `type(uint32).max`
// `price + type(uint32).max` will not overflow because `price` fits in 192 bits
sqrtPriceX96 := shr(32, add(price, sub(shl(32, 1), 1)))
}
}
}
/// @notice Calculates the greatest tick value such that getSqrtPriceAtTick(tick) <= sqrtPriceX96
/// @dev Throws in case sqrtPriceX96 < MIN_SQRT_PRICE, as MIN_SQRT_PRICE is the lowest value getSqrtPriceAtTick may
/// ever return.
/// @param sqrtPriceX96 The sqrt price for which to compute the tick as a Q64.96
/// @return tick The greatest tick for which the getSqrtPriceAtTick(tick) is less than or equal to the input sqrtPriceX96
function getTickAtSqrtPrice(uint160 sqrtPriceX96) internal pure returns (int24 tick) {
unchecked {
// Equivalent: if (sqrtPriceX96 < MIN_SQRT_PRICE || sqrtPriceX96 >= MAX_SQRT_PRICE) revert InvalidSqrtPrice();
// second inequality must be >= because the price can never reach the price at the max tick
// if sqrtPriceX96 < MIN_SQRT_PRICE, the `sub` underflows and `gt` is true
// if sqrtPriceX96 >= MAX_SQRT_PRICE, sqrtPriceX96 - MIN_SQRT_PRICE > MAX_SQRT_PRICE - MIN_SQRT_PRICE - 1
if ((sqrtPriceX96 - MIN_SQRT_PRICE) > MAX_SQRT_PRICE_MINUS_MIN_SQRT_PRICE_MINUS_ONE) {
InvalidSqrtPrice.selector.revertWith(sqrtPriceX96);
}
uint256 price = uint256(sqrtPriceX96) << 32;
uint256 r = price;
uint256 msb = BitMath.mostSignificantBit(r);
if (msb >= 128) r = price >> (msb - 127);
else r = price << (127 - msb);
int256 log_2 = (int256(msb) - 128) << 64;
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(63, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(62, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(61, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(60, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(59, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(58, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(57, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(56, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(55, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(54, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(53, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(52, f))
r := shr(f, r)
}
assembly ("memory-safe") {
r := shr(127, mul(r, r))
let f := shr(128, r)
log_2 := or(log_2, shl(51, f))
r := shr(f, r)
}
assembly ("memory-safe") {
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; // Q22.128 number
// Magic number represents the ceiling of the maximum value of the error when approximating log_sqrt10001(x)
int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128);
// Magic number represents the minimum value of the error when approximating log_sqrt10001(x), when
// sqrtPrice is from the range (2^-64, 2^64). This is safe as MIN_SQRT_PRICE is more than 2^-64. If MIN_SQRT_PRICE
// is changed, this may need to be changed too
int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128);
tick = tickLow == tickHi ? tickLow : getSqrtPriceAtTick(tickHi) <= sqrtPriceX96 ? tickHi : tickLow;
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {CustomRevert} from "./libraries/CustomRevert.sol";
/// @title Prevents delegatecall to a contract
/// @notice Base contract that provides a modifier for preventing delegatecall to methods in a child contract
abstract contract NoDelegateCall {
using CustomRevert for bytes4;
error DelegateCallNotAllowed();
/// @dev The original address of this contract
address private immutable original;
constructor() {
// Immutables are computed in the init code of the contract, and then inlined into the deployed bytecode.
// In other words, this variable won't change when it's checked at runtime.
original = address(this);
}
/// @dev Private method is used instead of inlining into modifier because modifiers are copied into each method,
/// and the use of immutable means the address bytes are copied in every place the modifier is used.
function checkNotDelegateCall() private view {
if (address(this) != original) DelegateCallNotAllowed.selector.revertWith();
}
/// @notice Prevents delegatecall into the modified method
modifier noDelegateCall() {
checkNotDelegateCall();
_;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {PoolKey} from "../types/PoolKey.sol";
import {BalanceDelta} from "../types/BalanceDelta.sol";
import {IPoolManager} from "./IPoolManager.sol";
import {BeforeSwapDelta} from "../types/BeforeSwapDelta.sol";
/// @notice V4 decides whether to invoke specific hooks by inspecting the least significant bits
/// of the address that the hooks contract is deployed to.
/// For example, a hooks contract deployed to address: 0x0000000000000000000000000000000000002400
/// has the lowest bits '10 0100 0000 0000' which would cause the 'before initialize' and 'after add liquidity' hooks to be used.
/// See the Hooks library for the full spec.
/// @dev Should only be callable by the v4 PoolManager.
interface IHooks {
/// @notice The hook called before the state of a pool is initialized
/// @param sender The initial msg.sender for the initialize call
/// @param key The key for the pool being initialized
/// @param sqrtPriceX96 The sqrt(price) of the pool as a Q64.96
/// @return bytes4 The function selector for the hook
function beforeInitialize(address sender, PoolKey calldata key, uint160 sqrtPriceX96) external returns (bytes4);
/// @notice The hook called after the state of a pool is initialized
/// @param sender The initial msg.sender for the initialize call
/// @param key The key for the pool being initialized
/// @param sqrtPriceX96 The sqrt(price) of the pool as a Q64.96
/// @param tick The current tick after the state of a pool is initialized
/// @return bytes4 The function selector for the hook
function afterInitialize(address sender, PoolKey calldata key, uint160 sqrtPriceX96, int24 tick)
external
returns (bytes4);
/// @notice The hook called before liquidity is added
/// @param sender The initial msg.sender for the add liquidity call
/// @param key The key for the pool
/// @param params The parameters for adding liquidity
/// @param hookData Arbitrary data handed into the PoolManager by the liquidity provider to be passed on to the hook
/// @return bytes4 The function selector for the hook
function beforeAddLiquidity(
address sender,
PoolKey calldata key,
IPoolManager.ModifyLiquidityParams calldata params,
bytes calldata hookData
) external returns (bytes4);
/// @notice The hook called after liquidity is added
/// @param sender The initial msg.sender for the add liquidity call
/// @param key The key for the pool
/// @param params The parameters for adding liquidity
/// @param delta The caller's balance delta after adding liquidity; the sum of principal delta, fees accrued, and hook delta
/// @param feesAccrued The fees accrued since the last time fees were collected from this position
/// @param hookData Arbitrary data handed into the PoolManager by the liquidity provider to be passed on to the hook
/// @return bytes4 The function selector for the hook
/// @return BalanceDelta The hook's delta in token0 and token1. Positive: the hook is owed/took currency, negative: the hook owes/sent currency
function afterAddLiquidity(
address sender,
PoolKey calldata key,
IPoolManager.ModifyLiquidityParams calldata params,
BalanceDelta delta,
BalanceDelta feesAccrued,
bytes calldata hookData
) external returns (bytes4, BalanceDelta);
/// @notice The hook called before liquidity is removed
/// @param sender The initial msg.sender for the remove liquidity call
/// @param key The key for the pool
/// @param params The parameters for removing liquidity
/// @param hookData Arbitrary data handed into the PoolManager by the liquidity provider to be be passed on to the hook
/// @return bytes4 The function selector for the hook
function beforeRemoveLiquidity(
address sender,
PoolKey calldata key,
IPoolManager.ModifyLiquidityParams calldata params,
bytes calldata hookData
) external returns (bytes4);
/// @notice The hook called after liquidity is removed
/// @param sender The initial msg.sender for the remove liquidity call
/// @param key The key for the pool
/// @param params The parameters for removing liquidity
/// @param delta The caller's balance delta after adding liquidity; the sum of principal delta, fees accrued, and hook delta
/// @param feesAccrued The fees accrued since the last time fees were collected from this position
/// @param hookData Arbitrary data handed into the PoolManager by the liquidity provider to be be passed on to the hook
/// @return bytes4 The function selector for the hook
/// @return BalanceDelta The hook's delta in token0 and token1. Positive: the hook is owed/took currency, negative: the hook owes/sent currency
function afterRemoveLiquidity(
address sender,
PoolKey calldata key,
IPoolManager.ModifyLiquidityParams calldata params,
BalanceDelta delta,
BalanceDelta feesAccrued,
bytes calldata hookData
) external returns (bytes4, BalanceDelta);
/// @notice The hook called before a swap
/// @param sender The initial msg.sender for the swap call
/// @param key The key for the pool
/// @param params The parameters for the swap
/// @param hookData Arbitrary data handed into the PoolManager by the swapper to be be passed on to the hook
/// @return bytes4 The function selector for the hook
/// @return BeforeSwapDelta The hook's delta in specified and unspecified currencies. Positive: the hook is owed/took currency, negative: the hook owes/sent currency
/// @return uint24 Optionally override the lp fee, only used if three conditions are met: 1. the Pool has a dynamic fee, 2. the value's 2nd highest bit is set (23rd bit, 0x400000), and 3. the value is less than or equal to the maximum fee (1 million)
function beforeSwap(
address sender,
PoolKey calldata key,
IPoolManager.SwapParams calldata params,
bytes calldata hookData
) external returns (bytes4, BeforeSwapDelta, uint24);
/// @notice The hook called after a swap
/// @param sender The initial msg.sender for the swap call
/// @param key The key for the pool
/// @param params The parameters for the swap
/// @param delta The amount owed to the caller (positive) or owed to the pool (negative)
/// @param hookData Arbitrary data handed into the PoolManager by the swapper to be be passed on to the hook
/// @return bytes4 The function selector for the hook
/// @return int128 The hook's delta in unspecified currency. Positive: the hook is owed/took currency, negative: the hook owes/sent currency
function afterSwap(
address sender,
PoolKey calldata key,
IPoolManager.SwapParams calldata params,
BalanceDelta delta,
bytes calldata hookData
) external returns (bytes4, int128);
/// @notice The hook called before donate
/// @param sender The initial msg.sender for the donate call
/// @param key The key for the pool
/// @param amount0 The amount of token0 being donated
/// @param amount1 The amount of token1 being donated
/// @param hookData Arbitrary data handed into the PoolManager by the donor to be be passed on to the hook
/// @return bytes4 The function selector for the hook
function beforeDonate(
address sender,
PoolKey calldata key,
uint256 amount0,
uint256 amount1,
bytes calldata hookData
) external returns (bytes4);
/// @notice The hook called after donate
/// @param sender The initial msg.sender for the donate call
/// @param key The key for the pool
/// @param amount0 The amount of token0 being donated
/// @param amount1 The amount of token1 being donated
/// @param hookData Arbitrary data handed into the PoolManager by the donor to be be passed on to the hook
/// @return bytes4 The function selector for the hook
function afterDonate(
address sender,
PoolKey calldata key,
uint256 amount0,
uint256 amount1,
bytes calldata hookData
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
import {Currency} from "../types/Currency.sol";
import {PoolKey} from "../types/PoolKey.sol";
import {IHooks} from "./IHooks.sol";
import {IERC6909Claims} from "./external/IERC6909Claims.sol";
import {IProtocolFees} from "./IProtocolFees.sol";
import {BalanceDelta} from "../types/BalanceDelta.sol";
import {PoolId} from "../types/PoolId.sol";
import {IExtsload} from "./IExtsload.sol";
import {IExttload} from "./IExttload.sol";
/// @notice Interface for the PoolManager
interface IPoolManager is IProtocolFees, IERC6909Claims, IExtsload, IExttload {
/// @notice Thrown when a currency is not netted out after the contract is unlocked
error CurrencyNotSettled();
/// @notice Thrown when trying to interact with a non-initialized pool
error PoolNotInitialized();
/// @notice Thrown when unlock is called, but the contract is already unlocked
error AlreadyUnlocked();
/// @notice Thrown when a function is called that requires the contract to be unlocked, but it is not
error ManagerLocked();
/// @notice Pools are limited to type(int16).max tickSpacing in #initialize, to prevent overflow
error TickSpacingTooLarge(int24 tickSpacing);
/// @notice Pools must have a positive non-zero tickSpacing passed to #initialize
error TickSpacingTooSmall(int24 tickSpacing);
/// @notice PoolKey must have currencies where address(currency0) < address(currency1)
error CurrenciesOutOfOrderOrEqual(address currency0, address currency1);
/// @notice Thrown when a call to updateDynamicLPFee is made by an address that is not the hook,
/// or on a pool that does not have a dynamic swap fee.
error UnauthorizedDynamicLPFeeUpdate();
/// @notice Thrown when trying to swap amount of 0
error SwapAmountCannotBeZero();
///@notice Thrown when native currency is passed to a non native settlement
error NonzeroNativeValue();
/// @notice Thrown when `clear` is called with an amount that is not exactly equal to the open currency delta.
error MustClearExactPositiveDelta();
/// @notice Emitted when a new pool is initialized
/// @param id The abi encoded hash of the pool key struct for the new pool
/// @param currency0 The first currency of the pool by address sort order
/// @param currency1 The second currency of the pool by address sort order
/// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
/// @param tickSpacing The minimum number of ticks between initialized ticks
/// @param hooks The hooks contract address for the pool, or address(0) if none
/// @param sqrtPriceX96 The price of the pool on initialization
/// @param tick The initial tick of the pool corresponding to the intialized price
event Initialize(
PoolId indexed id,
Currency indexed currency0,
Currency indexed currency1,
uint24 fee,
int24 tickSpacing,
IHooks hooks,
uint160 sqrtPriceX96,
int24 tick
);
/// @notice Emitted when a liquidity position is modified
/// @param id The abi encoded hash of the pool key struct for the pool that was modified
/// @param sender The address that modified the pool
/// @param tickLower The lower tick of the position
/// @param tickUpper The upper tick of the position
/// @param liquidityDelta The amount of liquidity that was added or removed
/// @param salt The extra data to make positions unique
event ModifyLiquidity(
PoolId indexed id, address indexed sender, int24 tickLower, int24 tickUpper, int256 liquidityDelta, bytes32 salt
);
/// @notice Emitted for swaps between currency0 and currency1
/// @param id The abi encoded hash of the pool key struct for the pool that was modified
/// @param sender The address that initiated the swap call, and that received the callback
/// @param amount0 The delta of the currency0 balance of the pool
/// @param amount1 The delta of the currency1 balance of the pool
/// @param sqrtPriceX96 The sqrt(price) of the pool after the swap, as a Q64.96
/// @param liquidity The liquidity of the pool after the swap
/// @param tick The log base 1.0001 of the price of the pool after the swap
/// @param fee The swap fee in hundredths of a bip
event Swap(
PoolId indexed id,
address indexed sender,
int128 amount0,
int128 amount1,
uint160 sqrtPriceX96,
uint128 liquidity,
int24 tick,
uint24 fee
);
/// @notice Emitted for donations
/// @param id The abi encoded hash of the pool key struct for the pool that was donated to
/// @param sender The address that initiated the donate call
/// @param amount0 The amount donated in currency0
/// @param amount1 The amount donated in currency1
event Donate(PoolId indexed id, address indexed sender, uint256 amount0, uint256 amount1);
/// @notice All interactions on the contract that account deltas require unlocking. A caller that calls `unlock` must implement
/// `IUnlockCallback(msg.sender).unlockCallback(data)`, where they interact with the remaining functions on this contract.
/// @dev The only functions callable without an unlocking are `initialize` and `updateDynamicLPFee`
/// @param data Any data to pass to the callback, via `IUnlockCallback(msg.sender).unlockCallback(data)`
/// @return The data returned by the call to `IUnlockCallback(msg.sender).unlockCallback(data)`
function unlock(bytes calldata data) external returns (bytes memory);
/// @notice Initialize the state for a given pool ID
/// @dev A swap fee totaling MAX_SWAP_FEE (100%) makes exact output swaps impossible since the input is entirely consumed by the fee
/// @param key The pool key for the pool to initialize
/// @param sqrtPriceX96 The initial square root price
/// @return tick The initial tick of the pool
function initialize(PoolKey memory key, uint160 sqrtPriceX96) external returns (int24 tick);
struct ModifyLiquidityParams {
// the lower and upper tick of the position
int24 tickLower;
int24 tickUpper;
// how to modify the liquidity
int256 liquidityDelta;
// a value to set if you want unique liquidity positions at the same range
bytes32 salt;
}
/// @notice Modify the liquidity for the given pool
/// @dev Poke by calling with a zero liquidityDelta
/// @param key The pool to modify liquidity in
/// @param params The parameters for modifying the liquidity
/// @param hookData The data to pass through to the add/removeLiquidity hooks
/// @return callerDelta The balance delta of the caller of modifyLiquidity. This is the total of both principal, fee deltas, and hook deltas if applicable
/// @return feesAccrued The balance delta of the fees generated in the liquidity range. Returned for informational purposes
function modifyLiquidity(PoolKey memory key, ModifyLiquidityParams memory params, bytes calldata hookData)
external
returns (BalanceDelta callerDelta, BalanceDelta feesAccrued);
struct SwapParams {
/// Whether to swap token0 for token1 or vice versa
bool zeroForOne;
/// The desired input amount if negative (exactIn), or the desired output amount if positive (exactOut)
int256 amountSpecified;
/// The sqrt price at which, if reached, the swap will stop executing
uint160 sqrtPriceLimitX96;
}
/// @notice Swap against the given pool
/// @param key The pool to swap in
/// @param params The parameters for swapping
/// @param hookData The data to pass through to the swap hooks
/// @return swapDelta The balance delta of the address swapping
/// @dev Swapping on low liquidity pools may cause unexpected swap amounts when liquidity available is less than amountSpecified.
/// Additionally note that if interacting with hooks that have the BEFORE_SWAP_RETURNS_DELTA_FLAG or AFTER_SWAP_RETURNS_DELTA_FLAG
/// the hook may alter the swap input/output. Integrators should perform checks on the returned swapDelta.
function swap(PoolKey memory key, SwapParams memory params, bytes calldata hookData)
external
returns (BalanceDelta swapDelta);
/// @notice Donate the given currency amounts to the in-range liquidity providers of a pool
/// @dev Calls to donate can be frontrun adding just-in-time liquidity, with the aim of receiving a portion donated funds.
/// Donors should keep this in mind when designing donation mechanisms.
/// @dev This function donates to in-range LPs at slot0.tick. In certain edge-cases of the swap algorithm, the `sqrtPrice` of
/// a pool can be at the lower boundary of tick `n`, but the `slot0.tick` of the pool is already `n - 1`. In this case a call to
/// `donate` would donate to tick `n - 1` (slot0.tick) not tick `n` (getTickAtSqrtPrice(slot0.sqrtPriceX96)).
/// Read the comments in `Pool.swap()` for more information about this.
/// @param key The key of the pool to donate to
/// @param amount0 The amount of currency0 to donate
/// @param amount1 The amount of currency1 to donate
/// @param hookData The data to pass through to the donate hooks
/// @return BalanceDelta The delta of the caller after the donate
function donate(PoolKey memory key, uint256 amount0, uint256 amount1, bytes calldata hookData)
external
returns (BalanceDelta);
/// @notice Writes the current ERC20 balance of the specified currency to transient storage
/// This is used to checkpoint balances for the manager and derive deltas for the caller.
/// @dev This MUST be called before any ERC20 tokens are sent into the contract, but can be skipped
/// for native tokens because the amount to settle is determined by the sent value.
/// However, if an ERC20 token has been synced and not settled, and the caller instead wants to settle
/// native funds, this function can be called with the native currency to then be able to settle the native currency
function sync(Currency currency) external;
/// @notice Called by the user to net out some value owed to the user
/// @dev Can also be used as a mechanism for _free_ flash loans
/// @param currency The currency to withdraw from the pool manager
/// @param to The address to withdraw to
/// @param amount The amount of currency to withdraw
function take(Currency currency, address to, uint256 amount) external;
/// @notice Called by the user to pay what is owed
/// @return paid The amount of currency settled
function settle() external payable returns (uint256 paid);
/// @notice Called by the user to pay on behalf of another address
/// @param recipient The address to credit for the payment
/// @return paid The amount of currency settled
function settleFor(address recipient) external payable returns (uint256 paid);
/// @notice WARNING - Any currency that is cleared, will be non-retrievable, and locked in the contract permanently.
/// A call to clear will zero out a positive balance WITHOUT a corresponding transfer.
/// @dev This could be used to clear a balance that is considered dust.
/// Additionally, the amount must be the exact positive balance. This is to enforce that the caller is aware of the amount being cleared.
function clear(Currency currency, uint256 amount) external;
/// @notice Called by the user to move value into ERC6909 balance
/// @param to The address to mint the tokens to
/// @param id The currency address to mint to ERC6909s, as a uint256
/// @param amount The amount of currency to mint
/// @dev The id is converted to a uint160 to correspond to a currency address
/// If the upper 12 bytes are not 0, they will be 0-ed out
function mint(address to, uint256 id, uint256 amount) external;
/// @notice Called by the user to move value from ERC6909 balance
/// @param from The address to burn the tokens from
/// @param id The currency address to burn from ERC6909s, as a uint256
/// @param amount The amount of currency to burn
/// @dev The id is converted to a uint160 to correspond to a currency address
/// If the upper 12 bytes are not 0, they will be 0-ed out
function burn(address from, uint256 id, uint256 amount) external;
/// @notice Updates the pools lp fees for the a pool that has enabled dynamic lp fees.
/// @dev A swap fee totaling MAX_SWAP_FEE (100%) makes exact output swaps impossible since the input is entirely consumed by the fee
/// @param key The key of the pool to update dynamic LP fees for
/// @param newDynamicLPFee The new dynamic pool LP fee
function updateDynamicLPFee(PoolKey memory key, uint24 newDynamicLPFee) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @notice Interface for the callback executed when an address unlocks the pool manager
interface IUnlockCallback {
/// @notice Called by the pool manager on `msg.sender` when the manager is unlocked
/// @param data The data that was passed to the call to unlock
/// @return Any data that you want to be returned from the unlock call
function unlockCallback(bytes calldata data) external returns (bytes memory);
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {Currency} from "./types/Currency.sol";
import {IProtocolFeeController} from "./interfaces/IProtocolFeeController.sol";
import {IProtocolFees} from "./interfaces/IProtocolFees.sol";
import {PoolKey} from "./types/PoolKey.sol";
import {ProtocolFeeLibrary} from "./libraries/ProtocolFeeLibrary.sol";
import {Owned} from "solmate/src/auth/Owned.sol";
import {PoolId} from "./types/PoolId.sol";
import {Pool} from "./libraries/Pool.sol";
import {CustomRevert} from "./libraries/CustomRevert.sol";
/// @notice Contract handling the setting and accrual of protocol fees
abstract contract ProtocolFees is IProtocolFees, Owned {
using ProtocolFeeLibrary for uint24;
using Pool for Pool.State;
using CustomRevert for bytes4;
/// @inheritdoc IProtocolFees
mapping(Currency currency => uint256 amount) public protocolFeesAccrued;
/// @inheritdoc IProtocolFees
IProtocolFeeController public protocolFeeController;
constructor() Owned(msg.sender) {}
/// @inheritdoc IProtocolFees
function setProtocolFeeController(IProtocolFeeController controller) external onlyOwner {
protocolFeeController = controller;
emit ProtocolFeeControllerUpdated(address(controller));
}
/// @inheritdoc IProtocolFees
function setProtocolFee(PoolKey memory key, uint24 newProtocolFee) external {
if (msg.sender != address(protocolFeeController)) InvalidCaller.selector.revertWith();
if (!newProtocolFee.isValidProtocolFee()) ProtocolFeeTooLarge.selector.revertWith(newProtocolFee);
PoolId id = key.toId();
_getPool(id).setProtocolFee(newProtocolFee);
emit ProtocolFeeUpdated(id, newProtocolFee);
}
/// @inheritdoc IProtocolFees
function collectProtocolFees(address recipient, Currency currency, uint256 amount)
external
returns (uint256 amountCollected)
{
if (msg.sender != address(protocolFeeController)) InvalidCaller.selector.revertWith();
if (_isUnlocked()) ContractUnlocked.selector.revertWith();
amountCollected = (amount == 0) ? protocolFeesAccrued[currency] : amount;
protocolFeesAccrued[currency] -= amountCollected;
currency.transfer(recipient, amountCollected);
}
/// @dev abstract internal function to allow the ProtocolFees contract to access the lock
function _isUnlocked() internal virtual returns (bool);
/// @dev abstract internal function to allow the ProtocolFees contract to access pool state
/// @dev this is overridden in PoolManager.sol to give access to the _pools mapping
function _getPool(PoolId id) internal virtual returns (Pool.State storage);
function _updateProtocolFees(Currency currency, uint256 amount) internal {
unchecked {
protocolFeesAccrued[currency] += amount;
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {ERC6909} from "./ERC6909.sol";
/// @notice ERC6909Claims inherits ERC6909 and implements an internal burnFrom function
abstract contract ERC6909Claims is ERC6909 {
/// @notice Burn `amount` tokens of token type `id` from `from`.
/// @dev if sender is not `from` they must be an operator or have sufficient allowance.
/// @param from The address to burn tokens from.
/// @param id The currency to burn.
/// @param amount The amount to burn.
function _burnFrom(address from, uint256 id, uint256 amount) internal {
address sender = msg.sender;
if (from != sender && !isOperator[from][sender]) {
uint256 senderAllowance = allowance[from][sender][id];
if (senderAllowance != type(uint256).max) {
allowance[from][sender][id] = senderAllowance - amount;
}
}
_burn(from, id, amount);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {PoolKey} from "./PoolKey.sol";
type PoolId is bytes32;
/// @notice Library for computing the ID of a pool
library PoolIdLibrary {
/// @notice Returns value equal to keccak256(abi.encode(poolKey))
function toId(PoolKey memory poolKey) internal pure returns (PoolId poolId) {
assembly ("memory-safe") {
// 0xa0 represents the total size of the poolKey struct (5 slots of 32 bytes)
poolId := keccak256(poolKey, 0xa0)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {SafeCast} from "../libraries/SafeCast.sol";
/// @dev Two `int128` values packed into a single `int256` where the upper 128 bits represent the amount0
/// and the lower 128 bits represent the amount1.
type BalanceDelta is int256;
using {add as +, sub as -, eq as ==, neq as !=} for BalanceDelta global;
using BalanceDeltaLibrary for BalanceDelta global;
using SafeCast for int256;
function toBalanceDelta(int128 _amount0, int128 _amount1) pure returns (BalanceDelta balanceDelta) {
assembly ("memory-safe") {
balanceDelta := or(shl(128, _amount0), and(sub(shl(128, 1), 1), _amount1))
}
}
function add(BalanceDelta a, BalanceDelta b) pure returns (BalanceDelta) {
int256 res0;
int256 res1;
assembly ("memory-safe") {
let a0 := sar(128, a)
let a1 := signextend(15, a)
let b0 := sar(128, b)
let b1 := signextend(15, b)
res0 := add(a0, b0)
res1 := add(a1, b1)
}
return toBalanceDelta(res0.toInt128(), res1.toInt128());
}
function sub(BalanceDelta a, BalanceDelta b) pure returns (BalanceDelta) {
int256 res0;
int256 res1;
assembly ("memory-safe") {
let a0 := sar(128, a)
let a1 := signextend(15, a)
let b0 := sar(128, b)
let b1 := signextend(15, b)
res0 := sub(a0, b0)
res1 := sub(a1, b1)
}
return toBalanceDelta(res0.toInt128(), res1.toInt128());
}
function eq(BalanceDelta a, BalanceDelta b) pure returns (bool) {
return BalanceDelta.unwrap(a) == BalanceDelta.unwrap(b);
}
function neq(BalanceDelta a, BalanceDelta b) pure returns (bool) {
return BalanceDelta.unwrap(a) != BalanceDelta.unwrap(b);
}
/// @notice Library for getting the amount0 and amount1 deltas from the BalanceDelta type
library BalanceDeltaLibrary {
/// @notice A BalanceDelta of 0
BalanceDelta public constant ZERO_DELTA = BalanceDelta.wrap(0);
function amount0(BalanceDelta balanceDelta) internal pure returns (int128 _amount0) {
assembly ("memory-safe") {
_amount0 := sar(128, balanceDelta)
}
}
function amount1(BalanceDelta balanceDelta) internal pure returns (int128 _amount1) {
assembly ("memory-safe") {
_amount1 := signextend(15, balanceDelta)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// Return type of the beforeSwap hook.
// Upper 128 bits is the delta in specified tokens. Lower 128 bits is delta in unspecified tokens (to match the afterSwap hook)
type BeforeSwapDelta is int256;
// Creates a BeforeSwapDelta from specified and unspecified
function toBeforeSwapDelta(int128 deltaSpecified, int128 deltaUnspecified)
pure
returns (BeforeSwapDelta beforeSwapDelta)
{
assembly ("memory-safe") {
beforeSwapDelta := or(shl(128, deltaSpecified), and(sub(shl(128, 1), 1), deltaUnspecified))
}
}
/// @notice Library for getting the specified and unspecified deltas from the BeforeSwapDelta type
library BeforeSwapDeltaLibrary {
/// @notice A BeforeSwapDelta of 0
BeforeSwapDelta public constant ZERO_DELTA = BeforeSwapDelta.wrap(0);
/// extracts int128 from the upper 128 bits of the BeforeSwapDelta
/// returned by beforeSwap
function getSpecifiedDelta(BeforeSwapDelta delta) internal pure returns (int128 deltaSpecified) {
assembly ("memory-safe") {
deltaSpecified := sar(128, delta)
}
}
/// extracts int128 from the lower 128 bits of the BeforeSwapDelta
/// returned by beforeSwap and afterSwap
function getUnspecifiedDelta(BeforeSwapDelta delta) internal pure returns (int128 deltaUnspecified) {
assembly ("memory-safe") {
deltaUnspecified := signextend(15, delta)
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;
/// @notice This is a temporary library that allows us to use transient storage (tstore/tload)
/// TODO: This library can be deleted when we have the transient keyword support in solidity.
library Lock {
// The slot holding the unlocked state, transiently. bytes32(uint256(keccak256("Unlocked")) - 1)
bytes32 internal constant IS_UNLOCKED_SLOT = 0xc090fc4683624cfc3884e9d8de5eca132f2d0ec062aff75d43c0465d5ceeab23;
function unlock() internal {
assembly ("memory-safe") {
// unlock
tstore(IS_UNLOCKED_SLOT, true)
}
}
function lock() internal {
assembly ("memory-safe") {
tstore(IS_UNLOCKED_SLOT, false)
}
}
function isUnlocked() internal view returns (bool unlocked) {
assembly ("memory-safe") {
unlocked := tload(IS_UNLOCKED_SLOT)
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;
import {Currency} from "../types/Currency.sol";
/// @title a library to store callers' currency deltas in transient storage
/// @dev this library implements the equivalent of a mapping, as transient storage can only be accessed in assembly
library CurrencyDelta {
/// @notice calculates which storage slot a delta should be stored in for a given account and currency
function _computeSlot(address target, Currency currency) internal pure returns (bytes32 hashSlot) {
assembly ("memory-safe") {
mstore(0, and(target, 0xffffffffffffffffffffffffffffffffffffffff))
mstore(32, and(currency, 0xffffffffffffffffffffffffffffffffffffffff))
hashSlot := keccak256(0, 64)
}
}
function getDelta(Currency currency, address target) internal view returns (int256 delta) {
bytes32 hashSlot = _computeSlot(target, currency);
assembly ("memory-safe") {
delta := tload(hashSlot)
}
}
/// @notice applies a new currency delta for a given account and currency
/// @return previous The prior value
/// @return next The modified result
function applyDelta(Currency currency, address target, int128 delta)
internal
returns (int256 previous, int256 next)
{
bytes32 hashSlot = _computeSlot(target, currency);
assembly ("memory-safe") {
previous := tload(hashSlot)
}
next = previous + delta;
assembly ("memory-safe") {
tstore(hashSlot, next)
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;
/// @notice This is a temporary library that allows us to use transient storage (tstore/tload)
/// for the nonzero delta count.
/// TODO: This library can be deleted when we have the transient keyword support in solidity.
library NonzeroDeltaCount {
// The slot holding the number of nonzero deltas. bytes32(uint256(keccak256("NonzeroDeltaCount")) - 1)
bytes32 internal constant NONZERO_DELTA_COUNT_SLOT =
0x7d4b3164c6e45b97e7d87b7125a44c5828d005af88f9d751cfd78729c5d99a0b;
function read() internal view returns (uint256 count) {
assembly ("memory-safe") {
count := tload(NONZERO_DELTA_COUNT_SLOT)
}
}
function increment() internal {
assembly ("memory-safe") {
let count := tload(NONZERO_DELTA_COUNT_SLOT)
count := add(count, 1)
tstore(NONZERO_DELTA_COUNT_SLOT, count)
}
}
/// @notice Potential to underflow. Ensure checks are performed by integrating contracts to ensure this does not happen.
/// Current usage ensures this will not happen because we call decrement with known boundaries (only up to the number of times we call increment).
function decrement() internal {
assembly ("memory-safe") {
let count := tload(NONZERO_DELTA_COUNT_SLOT)
count := sub(count, 1)
tstore(NONZERO_DELTA_COUNT_SLOT, count)
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;
import {Currency} from "../types/Currency.sol";
import {CustomRevert} from "./CustomRevert.sol";
library CurrencyReserves {
using CustomRevert for bytes4;
/// bytes32(uint256(keccak256("ReservesOf")) - 1)
bytes32 constant RESERVES_OF_SLOT = 0x1e0745a7db1623981f0b2a5d4232364c00787266eb75ad546f190e6cebe9bd95;
/// bytes32(uint256(keccak256("Currency")) - 1)
bytes32 constant CURRENCY_SLOT = 0x27e098c505d44ec3574004bca052aabf76bd35004c182099d8c575fb238593b9;
function getSyncedCurrency() internal view returns (Currency currency) {
assembly ("memory-safe") {
currency := tload(CURRENCY_SLOT)
}
}
function resetCurrency() internal {
assembly ("memory-safe") {
tstore(CURRENCY_SLOT, 0)
}
}
function syncCurrencyAndReserves(Currency currency, uint256 value) internal {
assembly ("memory-safe") {
tstore(CURRENCY_SLOT, and(currency, 0xffffffffffffffffffffffffffffffffffffffff))
tstore(RESERVES_OF_SLOT, value)
}
}
function getSyncedReserves() internal view returns (uint256 value) {
assembly ("memory-safe") {
value := tload(RESERVES_OF_SLOT)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {IExtsload} from "./interfaces/IExtsload.sol";
/// @notice Enables public storage access for efficient state retrieval by external contracts.
/// https://eips.ethereum.org/EIPS/eip-2330#rationale
abstract contract Extsload is IExtsload {
/// @inheritdoc IExtsload
function extsload(bytes32 slot) external view returns (bytes32) {
assembly ("memory-safe") {
mstore(0, sload(slot))
return(0, 0x20)
}
}
/// @inheritdoc IExtsload
function extsload(bytes32 startSlot, uint256 nSlots) external view returns (bytes32[] memory) {
assembly ("memory-safe") {
let memptr := mload(0x40)
let start := memptr
// A left bit-shift of 5 is equivalent to multiplying by 32 but costs less gas.
let length := shl(5, nSlots)
// The abi offset of dynamic array in the returndata is 32.
mstore(memptr, 0x20)
// Store the length of the array returned
mstore(add(memptr, 0x20), nSlots)
// update memptr to the first location to hold a result
memptr := add(memptr, 0x40)
let end := add(memptr, length)
for {} 1 {} {
mstore(memptr, sload(startSlot))
memptr := add(memptr, 0x20)
startSlot := add(startSlot, 1)
if iszero(lt(memptr, end)) { break }
}
return(start, sub(end, start))
}
}
/// @inheritdoc IExtsload
function extsload(bytes32[] calldata slots) external view returns (bytes32[] memory) {
assembly ("memory-safe") {
let memptr := mload(0x40)
let start := memptr
// for abi encoding the response - the array will be found at 0x20
mstore(memptr, 0x20)
// next we store the length of the return array
mstore(add(memptr, 0x20), slots.length)
// update memptr to the first location to hold an array entry
memptr := add(memptr, 0x40)
// A left bit-shift of 5 is equivalent to multiplying by 32 but costs less gas.
let end := add(memptr, shl(5, slots.length))
let calldataptr := slots.offset
for {} 1 {} {
mstore(memptr, sload(calldataload(calldataptr)))
memptr := add(memptr, 0x20)
calldataptr := add(calldataptr, 0x20)
if iszero(lt(memptr, end)) { break }
}
return(start, sub(end, start))
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
import {IExttload} from "./interfaces/IExttload.sol";
/// @notice Enables public transient storage access for efficient state retrieval by external contracts.
/// https://eips.ethereum.org/EIPS/eip-2330#rationale
abstract contract Exttload is IExttload {
/// @inheritdoc IExttload
function exttload(bytes32 slot) external view returns (bytes32) {
assembly ("memory-safe") {
mstore(0, tload(slot))
return(0, 0x20)
}
}
/// @inheritdoc IExttload
function exttload(bytes32[] calldata slots) external view returns (bytes32[] memory) {
assembly ("memory-safe") {
let memptr := mload(0x40)
let start := memptr
// for abi encoding the response - the array will be found at 0x20
mstore(memptr, 0x20)
// next we store the length of the return array
mstore(add(memptr, 0x20), slots.length)
// update memptr to the first location to hold an array entry
memptr := add(memptr, 0x40)
// A left bit-shift of 5 is equivalent to multiplying by 32 but costs less gas.
let end := add(memptr, shl(5, slots.length))
let calldataptr := slots.offset
for {} 1 {} {
mstore(memptr, tload(calldataload(calldataptr)))
memptr := add(memptr, 0x20)
calldataptr := add(calldataptr, 0x20)
if iszero(lt(memptr, end)) { break }
}
return(start, sub(end, start))
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Library for reverting with custom errors efficiently
/// @notice Contains functions for reverting with custom errors with different argument types efficiently
/// @dev To use this library, declare `using CustomRevert for bytes4;` and replace `revert CustomError()` with
/// `CustomError.selector.revertWith()`
/// @dev The functions may tamper with the free memory pointer but it is fine since the call context is exited immediately
library CustomRevert {
/// @dev Reverts with the selector of a custom error in the scratch space
function revertWith(bytes4 selector) internal pure {
assembly ("memory-safe") {
mstore(0, selector)
revert(0, 0x04)
}
}
/// @dev Reverts with a custom error with an address argument in the scratch space
function revertWith(bytes4 selector, address addr) internal pure {
assembly ("memory-safe") {
mstore(0, selector)
mstore(0x04, and(addr, 0xffffffffffffffffffffffffffffffffffffffff))
revert(0, 0x24)
}
}
/// @dev Reverts with a custom error with an int24 argument in the scratch space
function revertWith(bytes4 selector, int24 value) internal pure {
assembly ("memory-safe") {
mstore(0, selector)
mstore(0x04, signextend(2, value))
revert(0, 0x24)
}
}
/// @dev Reverts with a custom error with a uint160 argument in the scratch space
function revertWith(bytes4 selector, uint160 value) internal pure {
assembly ("memory-safe") {
mstore(0, selector)
mstore(0x04, and(value, 0xffffffffffffffffffffffffffffffffffffffff))
revert(0, 0x24)
}
}
/// @dev Reverts with a custom error with two int24 arguments
function revertWith(bytes4 selector, int24 value1, int24 value2) internal pure {
assembly ("memory-safe") {
let fmp := mload(0x40)
mstore(fmp, selector)
mstore(add(fmp, 0x04), signextend(2, value1))
mstore(add(fmp, 0x24), signextend(2, value2))
revert(fmp, 0x44)
}
}
/// @dev Reverts with a custom error with two uint160 arguments
function revertWith(bytes4 selector, uint160 value1, uint160 value2) internal pure {
assembly ("memory-safe") {
let fmp := mload(0x40)
mstore(fmp, selector)
mstore(add(fmp, 0x04), and(value1, 0xffffffffffffffffffffffffffffffffffffffff))
mstore(add(fmp, 0x24), and(value2, 0xffffffffffffffffffffffffffffffffffffffff))
revert(fmp, 0x44)
}
}
/// @dev Reverts with a custom error with two address arguments
function revertWith(bytes4 selector, address value1, address value2) internal pure {
assembly ("memory-safe") {
let fmp := mload(0x40)
mstore(fmp, selector)
mstore(add(fmp, 0x04), and(value1, 0xffffffffffffffffffffffffffffffffffffffff))
mstore(add(fmp, 0x24), and(value2, 0xffffffffffffffffffffffffffffffffffffffff))
revert(fmp, 0x44)
}
}
/// @notice bubble up the revert message returned by a call and revert with the selector provided
/// @dev this function should only be used with custom errors of the type `CustomError(address target, bytes revertReason)`
function bubbleUpAndRevertWith(bytes4 selector, address addr) internal pure {
assembly ("memory-safe") {
let size := returndatasize()
let fmp := mload(0x40)
// Encode selector, address, offset, size, data
mstore(fmp, selector)
mstore(add(fmp, 0x04), addr)
mstore(add(fmp, 0x24), 0x40)
mstore(add(fmp, 0x44), size)
returndatacopy(add(fmp, 0x64), 0, size)
// Ensure the size is a multiple of 32 bytes
let encodedSize := add(0x64, mul(div(add(size, 31), 32), 32))
revert(fmp, encodedSize)
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @notice Parses bytes returned from hooks and the byte selector used to check return selectors from hooks.
/// @dev parseSelector also is used to parse the expected selector
/// For parsing hook returns, note that all hooks return either bytes4 or (bytes4, 32-byte-delta) or (bytes4, 32-byte-delta, uint24).
library ParseBytes {
function parseSelector(bytes memory result) internal pure returns (bytes4 selector) {
// equivalent: (selector,) = abi.decode(result, (bytes4, int256));
assembly ("memory-safe") {
selector := mload(add(result, 0x20))
}
}
function parseFee(bytes memory result) internal pure returns (uint24 lpFee) {
// equivalent: (,, lpFee) = abi.decode(result, (bytes4, int256, uint24));
assembly ("memory-safe") {
lpFee := mload(add(result, 0x60))
}
}
function parseReturnDelta(bytes memory result) internal pure returns (int256 hookReturn) {
// equivalent: (, hookReturnDelta) = abi.decode(result, (bytes4, int256));
assembly ("memory-safe") {
hookReturn := mload(add(result, 0x40))
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {BitMath} from "./BitMath.sol";
/// @title Packed tick initialized state library
/// @notice Stores a packed mapping of tick index to its initialized state
/// @dev The mapping uses int16 for keys since ticks are represented as int24 and there are 256 (2^8) values per word.
library TickBitmap {
/// @notice Thrown when the tick is not enumerated by the tick spacing
/// @param tick the invalid tick
/// @param tickSpacing The tick spacing of the pool
error TickMisaligned(int24 tick, int24 tickSpacing);
/// @dev round towards negative infinity
function compress(int24 tick, int24 tickSpacing) internal pure returns (int24 compressed) {
// compressed = tick / tickSpacing;
// if (tick < 0 && tick % tickSpacing != 0) compressed--;
assembly ("memory-safe") {
tick := signextend(2, tick)
tickSpacing := signextend(2, tickSpacing)
compressed :=
sub(
sdiv(tick, tickSpacing),
// if (tick < 0 && tick % tickSpacing != 0) then tick % tickSpacing < 0, vice versa
slt(smod(tick, tickSpacing), 0)
)
}
}
/// @notice Computes the position in the mapping where the initialized bit for a tick lives
/// @param tick The tick for which to compute the position
/// @return wordPos The key in the mapping containing the word in which the bit is stored
/// @return bitPos The bit position in the word where the flag is stored
function position(int24 tick) internal pure returns (int16 wordPos, uint8 bitPos) {
assembly ("memory-safe") {
// signed arithmetic shift right
wordPos := sar(8, signextend(2, tick))
bitPos := and(tick, 0xff)
}
}
/// @notice Flips the initialized state for a given tick from false to true, or vice versa
/// @param self The mapping in which to flip the tick
/// @param tick The tick to flip
/// @param tickSpacing The spacing between usable ticks
function flipTick(mapping(int16 => uint256) storage self, int24 tick, int24 tickSpacing) internal {
// Equivalent to the following Solidity:
// if (tick % tickSpacing != 0) revert TickMisaligned(tick, tickSpacing);
// (int16 wordPos, uint8 bitPos) = position(tick / tickSpacing);
// uint256 mask = 1 << bitPos;
// self[wordPos] ^= mask;
assembly ("memory-safe") {
tick := signextend(2, tick)
tickSpacing := signextend(2, tickSpacing)
// ensure that the tick is spaced
if smod(tick, tickSpacing) {
let fmp := mload(0x40)
mstore(fmp, 0xd4d8f3e6) // selector for TickMisaligned(int24,int24)
mstore(add(fmp, 0x20), tick)
mstore(add(fmp, 0x40), tickSpacing)
revert(add(fmp, 0x1c), 0x44)
}
tick := sdiv(tick, tickSpacing)
// calculate the storage slot corresponding to the tick
// wordPos = tick >> 8
mstore(0, sar(8, tick))
mstore(0x20, self.slot)
// the slot of self[wordPos] is keccak256(abi.encode(wordPos, self.slot))
let slot := keccak256(0, 0x40)
// mask = 1 << bitPos = 1 << (tick % 256)
// self[wordPos] ^= mask
sstore(slot, xor(sload(slot), shl(and(tick, 0xff), 1)))
}
}
/// @notice Returns the next initialized tick contained in the same word (or adjacent word) as the tick that is either
/// to the left (less than or equal to) or right (greater than) of the given tick
/// @param self The mapping in which to compute the next initialized tick
/// @param tick The starting tick
/// @param tickSpacing The spacing between usable ticks
/// @param lte Whether to search for the next initialized tick to the left (less than or equal to the starting tick)
/// @return next The next initialized or uninitialized tick up to 256 ticks away from the current tick
/// @return initialized Whether the next tick is initialized, as the function only searches within up to 256 ticks
function nextInitializedTickWithinOneWord(
mapping(int16 => uint256) storage self,
int24 tick,
int24 tickSpacing,
bool lte
) internal view returns (int24 next, bool initialized) {
unchecked {
int24 compressed = compress(tick, tickSpacing);
if (lte) {
(int16 wordPos, uint8 bitPos) = position(compressed);
// all the 1s at or to the right of the current bitPos
uint256 mask = type(uint256).max >> (uint256(type(uint8).max) - bitPos);
uint256 masked = self[wordPos] & mask;
// if there are no initialized ticks to the right of or at the current tick, return rightmost in the word
initialized = masked != 0;
// overflow/underflow is possible, but prevented externally by limiting both tickSpacing and tick
next = initialized
? (compressed - int24(uint24(bitPos - BitMath.mostSignificantBit(masked)))) * tickSpacing
: (compressed - int24(uint24(bitPos))) * tickSpacing;
} else {
// start from the word of the next tick, since the current tick state doesn't matter
(int16 wordPos, uint8 bitPos) = position(++compressed);
// all the 1s at or to the left of the bitPos
uint256 mask = ~((1 << bitPos) - 1);
uint256 masked = self[wordPos] & mask;
// if there are no initialized ticks to the left of the current tick, return leftmost in the word
initialized = masked != 0;
// overflow/underflow is possible, but prevented externally by limiting both tickSpacing and tick
next = initialized
? (compressed + int24(uint24(BitMath.leastSignificantBit(masked) - bitPos))) * tickSpacing
: (compressed + int24(uint24(type(uint8).max - bitPos))) * tickSpacing;
}
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title Math functions that do not check inputs or outputs
/// @notice Contains methods that perform common math functions but do not do any overflow or underflow checks
library UnsafeMath {
/// @notice Returns ceil(x / y)
/// @dev division by 0 has unspecified behavior, and must be checked externally
/// @param x The dividend
/// @param y The divisor
/// @return z The quotient, ceil(x / y)
function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z) {
assembly ("memory-safe") {
z := add(div(x, y), gt(mod(x, y), 0))
}
}
/// @notice Calculates floor(a×b÷denominator)
/// @dev division by 0 has unspecified behavior, and must be checked externally
/// @param a The multiplicand
/// @param b The multiplier
/// @param denominator The divisor
/// @return result The 256-bit result, floor(a×b÷denominator)
function simpleMulDiv(uint256 a, uint256 b, uint256 denominator) internal pure returns (uint256 result) {
assembly ("memory-safe") {
result := div(mul(a, b), denominator)
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title FixedPoint128
/// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format)
library FixedPoint128 {
uint256 internal constant Q128 = 0x100000000000000000000000000000000;
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {SafeCast} from "./SafeCast.sol";
import {FullMath} from "./FullMath.sol";
import {UnsafeMath} from "./UnsafeMath.sol";
import {FixedPoint96} from "./FixedPoint96.sol";
/// @title Functions based on Q64.96 sqrt price and liquidity
/// @notice Contains the math that uses square root of price as a Q64.96 and liquidity to compute deltas
library SqrtPriceMath {
using SafeCast for uint256;
error InvalidPriceOrLiquidity();
error InvalidPrice();
error NotEnoughLiquidity();
error PriceOverflow();
/// @notice Gets the next sqrt price given a delta of currency0
/// @dev Always rounds up, because in the exact output case (increasing price) we need to move the price at least
/// far enough to get the desired output amount, and in the exact input case (decreasing price) we need to move the
/// price less in order to not send too much output.
/// The most precise formula for this is liquidity * sqrtPX96 / (liquidity +- amount * sqrtPX96),
/// if this is impossible because of overflow, we calculate liquidity / (liquidity / sqrtPX96 +- amount).
/// @param sqrtPX96 The starting price, i.e. before accounting for the currency0 delta
/// @param liquidity The amount of usable liquidity
/// @param amount How much of currency0 to add or remove from virtual reserves
/// @param add Whether to add or remove the amount of currency0
/// @return The price after adding or removing amount, depending on add
function getNextSqrtPriceFromAmount0RoundingUp(uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add)
internal
pure
returns (uint160)
{
// we short circuit amount == 0 because the result is otherwise not guaranteed to equal the input price
if (amount == 0) return sqrtPX96;
uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION;
if (add) {
unchecked {
uint256 product = amount * sqrtPX96;
if (product / amount == sqrtPX96) {
uint256 denominator = numerator1 + product;
if (denominator >= numerator1) {
// always fits in 160 bits
return uint160(FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator));
}
}
}
// denominator is checked for overflow
return uint160(UnsafeMath.divRoundingUp(numerator1, (numerator1 / sqrtPX96) + amount));
} else {
unchecked {
uint256 product = amount * sqrtPX96;
// if the product overflows, we know the denominator underflows
// in addition, we must check that the denominator does not underflow
// equivalent: if (product / amount != sqrtPX96 || numerator1 <= product) revert PriceOverflow();
assembly ("memory-safe") {
if iszero(
and(
eq(div(product, amount), and(sqrtPX96, 0xffffffffffffffffffffffffffffffffffffffff)),
gt(numerator1, product)
)
) {
mstore(0, 0xf5c787f1) // selector for PriceOverflow()
revert(0x1c, 0x04)
}
}
uint256 denominator = numerator1 - product;
return FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator).toUint160();
}
}
}
/// @notice Gets the next sqrt price given a delta of currency1
/// @dev Always rounds down, because in the exact output case (decreasing price) we need to move the price at least
/// far enough to get the desired output amount, and in the exact input case (increasing price) we need to move the
/// price less in order to not send too much output.
/// The formula we compute is within <1 wei of the lossless version: sqrtPX96 +- amount / liquidity
/// @param sqrtPX96 The starting price, i.e., before accounting for the currency1 delta
/// @param liquidity The amount of usable liquidity
/// @param amount How much of currency1 to add, or remove, from virtual reserves
/// @param add Whether to add, or remove, the amount of currency1
/// @return The price after adding or removing `amount`
function getNextSqrtPriceFromAmount1RoundingDown(uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add)
internal
pure
returns (uint160)
{
// if we're adding (subtracting), rounding down requires rounding the quotient down (up)
// in both cases, avoid a mulDiv for most inputs
if (add) {
uint256 quotient = (
amount <= type(uint160).max
? (amount << FixedPoint96.RESOLUTION) / liquidity
: FullMath.mulDiv(amount, FixedPoint96.Q96, liquidity)
);
return (uint256(sqrtPX96) + quotient).toUint160();
} else {
uint256 quotient = (
amount <= type(uint160).max
? UnsafeMath.divRoundingUp(amount << FixedPoint96.RESOLUTION, liquidity)
: FullMath.mulDivRoundingUp(amount, FixedPoint96.Q96, liquidity)
);
// equivalent: if (sqrtPX96 <= quotient) revert NotEnoughLiquidity();
assembly ("memory-safe") {
if iszero(gt(and(sqrtPX96, 0xffffffffffffffffffffffffffffffffffffffff), quotient)) {
mstore(0, 0x4323a555) // selector for NotEnoughLiquidity()
revert(0x1c, 0x04)
}
}
// always fits 160 bits
unchecked {
return uint160(sqrtPX96 - quotient);
}
}
}
/// @notice Gets the next sqrt price given an input amount of currency0 or currency1
/// @dev Throws if price or liquidity are 0, or if the next price is out of bounds
/// @param sqrtPX96 The starting price, i.e., before accounting for the input amount
/// @param liquidity The amount of usable liquidity
/// @param amountIn How much of currency0, or currency1, is being swapped in
/// @param zeroForOne Whether the amount in is currency0 or currency1
/// @return uint160 The price after adding the input amount to currency0 or currency1
function getNextSqrtPriceFromInput(uint160 sqrtPX96, uint128 liquidity, uint256 amountIn, bool zeroForOne)
internal
pure
returns (uint160)
{
// equivalent: if (sqrtPX96 == 0 || liquidity == 0) revert InvalidPriceOrLiquidity();
assembly ("memory-safe") {
if or(
iszero(and(sqrtPX96, 0xffffffffffffffffffffffffffffffffffffffff)),
iszero(and(liquidity, 0xffffffffffffffffffffffffffffffff))
) {
mstore(0, 0x4f2461b8) // selector for InvalidPriceOrLiquidity()
revert(0x1c, 0x04)
}
}
// round to make sure that we don't pass the target price
return zeroForOne
? getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountIn, true)
: getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountIn, true);
}
/// @notice Gets the next sqrt price given an output amount of currency0 or currency1
/// @dev Throws if price or liquidity are 0 or the next price is out of bounds
/// @param sqrtPX96 The starting price before accounting for the output amount
/// @param liquidity The amount of usable liquidity
/// @param amountOut How much of currency0, or currency1, is being swapped out
/// @param zeroForOne Whether the amount out is currency1 or currency0
/// @return uint160 The price after removing the output amount of currency0 or currency1
function getNextSqrtPriceFromOutput(uint160 sqrtPX96, uint128 liquidity, uint256 amountOut, bool zeroForOne)
internal
pure
returns (uint160)
{
// equivalent: if (sqrtPX96 == 0 || liquidity == 0) revert InvalidPriceOrLiquidity();
assembly ("memory-safe") {
if or(
iszero(and(sqrtPX96, 0xffffffffffffffffffffffffffffffffffffffff)),
iszero(and(liquidity, 0xffffffffffffffffffffffffffffffff))
) {
mstore(0, 0x4f2461b8) // selector for InvalidPriceOrLiquidity()
revert(0x1c, 0x04)
}
}
// round to make sure that we pass the target price
return zeroForOne
? getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountOut, false)
: getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountOut, false);
}
/// @notice Gets the amount0 delta between two prices
/// @dev Calculates liquidity / sqrt(lower) - liquidity / sqrt(upper),
/// i.e. liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower))
/// @param sqrtPriceAX96 A sqrt price
/// @param sqrtPriceBX96 Another sqrt price
/// @param liquidity The amount of usable liquidity
/// @param roundUp Whether to round the amount up or down
/// @return uint256 Amount of currency0 required to cover a position of size liquidity between the two passed prices
function getAmount0Delta(uint160 sqrtPriceAX96, uint160 sqrtPriceBX96, uint128 liquidity, bool roundUp)
internal
pure
returns (uint256)
{
unchecked {
if (sqrtPriceAX96 > sqrtPriceBX96) (sqrtPriceAX96, sqrtPriceBX96) = (sqrtPriceBX96, sqrtPriceAX96);
// equivalent: if (sqrtPriceAX96 == 0) revert InvalidPrice();
assembly ("memory-safe") {
if iszero(and(sqrtPriceAX96, 0xffffffffffffffffffffffffffffffffffffffff)) {
mstore(0, 0x00bfc921) // selector for InvalidPrice()
revert(0x1c, 0x04)
}
}
uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION;
uint256 numerator2 = sqrtPriceBX96 - sqrtPriceAX96;
return roundUp
? UnsafeMath.divRoundingUp(FullMath.mulDivRoundingUp(numerator1, numerator2, sqrtPriceBX96), sqrtPriceAX96)
: FullMath.mulDiv(numerator1, numerator2, sqrtPriceBX96) / sqrtPriceAX96;
}
}
/// @notice Equivalent to: `a >= b ? a - b : b - a`
function absDiff(uint160 a, uint160 b) internal pure returns (uint256 res) {
assembly ("memory-safe") {
let diff :=
sub(and(a, 0xffffffffffffffffffffffffffffffffffffffff), and(b, 0xffffffffffffffffffffffffffffffffffffffff))
// mask = 0 if a >= b else -1 (all 1s)
let mask := sar(255, diff)
// if a >= b, res = a - b = 0 ^ (a - b)
// if a < b, res = b - a = ~~(b - a) = ~(-(b - a) - 1) = ~(a - b - 1) = (-1) ^ (a - b - 1)
// either way, res = mask ^ (a - b + mask)
res := xor(mask, add(mask, diff))
}
}
/// @notice Gets the amount1 delta between two prices
/// @dev Calculates liquidity * (sqrt(upper) - sqrt(lower))
/// @param sqrtPriceAX96 A sqrt price
/// @param sqrtPriceBX96 Another sqrt price
/// @param liquidity The amount of usable liquidity
/// @param roundUp Whether to round the amount up, or down
/// @return amount1 Amount of currency1 required to cover a position of size liquidity between the two passed prices
function getAmount1Delta(uint160 sqrtPriceAX96, uint160 sqrtPriceBX96, uint128 liquidity, bool roundUp)
internal
pure
returns (uint256 amount1)
{
uint256 numerator = absDiff(sqrtPriceAX96, sqrtPriceBX96);
uint256 denominator = FixedPoint96.Q96;
uint256 _liquidity = uint256(liquidity);
/**
* Equivalent to:
* amount1 = roundUp
* ? FullMath.mulDivRoundingUp(liquidity, sqrtPriceBX96 - sqrtPriceAX96, FixedPoint96.Q96)
* : FullMath.mulDiv(liquidity, sqrtPriceBX96 - sqrtPriceAX96, FixedPoint96.Q96);
* Cannot overflow because `type(uint128).max * type(uint160).max >> 96 < (1 << 192)`.
*/
amount1 = FullMath.mulDiv(_liquidity, numerator, denominator);
assembly ("memory-safe") {
amount1 := add(amount1, and(gt(mulmod(_liquidity, numerator, denominator), 0), roundUp))
}
}
/// @notice Helper that gets signed currency0 delta
/// @param sqrtPriceAX96 A sqrt price
/// @param sqrtPriceBX96 Another sqrt price
/// @param liquidity The change in liquidity for which to compute the amount0 delta
/// @return int256 Amount of currency0 corresponding to the passed liquidityDelta between the two prices
function getAmount0Delta(uint160 sqrtPriceAX96, uint160 sqrtPriceBX96, int128 liquidity)
internal
pure
returns (int256)
{
unchecked {
return liquidity < 0
? getAmount0Delta(sqrtPriceAX96, sqrtPriceBX96, uint128(-liquidity), false).toInt256()
: -getAmount0Delta(sqrtPriceAX96, sqrtPriceBX96, uint128(liquidity), true).toInt256();
}
}
/// @notice Helper that gets signed currency1 delta
/// @param sqrtPriceAX96 A sqrt price
/// @param sqrtPriceBX96 Another sqrt price
/// @param liquidity The change in liquidity for which to compute the amount1 delta
/// @return int256 Amount of currency1 corresponding to the passed liquidityDelta between the two prices
function getAmount1Delta(uint160 sqrtPriceAX96, uint160 sqrtPriceBX96, int128 liquidity)
internal
pure
returns (int256)
{
unchecked {
return liquidity < 0
? getAmount1Delta(sqrtPriceAX96, sqrtPriceBX96, uint128(-liquidity), false).toInt256()
: -getAmount1Delta(sqrtPriceAX96, sqrtPriceBX96, uint128(liquidity), true).toInt256();
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
import {FullMath} from "./FullMath.sol";
import {SqrtPriceMath} from "./SqrtPriceMath.sol";
/// @title Computes the result of a swap within ticks
/// @notice Contains methods for computing the result of a swap within a single tick price range, i.e., a single tick.
library SwapMath {
/// @notice the swap fee is represented in hundredths of a bip, so the max is 100%
/// @dev the swap fee is the total fee on a swap, including both LP and Protocol fee
uint256 internal constant MAX_SWAP_FEE = 1e6;
/// @notice Computes the sqrt price target for the next swap step
/// @param zeroForOne The direction of the swap, true for currency0 to currency1, false for currency1 to currency0
/// @param sqrtPriceNextX96 The Q64.96 sqrt price for the next initialized tick
/// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this value
/// after the swap. If one for zero, the price cannot be greater than this value after the swap
/// @return sqrtPriceTargetX96 The price target for the next swap step
function getSqrtPriceTarget(bool zeroForOne, uint160 sqrtPriceNextX96, uint160 sqrtPriceLimitX96)
internal
pure
returns (uint160 sqrtPriceTargetX96)
{
assembly ("memory-safe") {
// a flag to toggle between sqrtPriceNextX96 and sqrtPriceLimitX96
// when zeroForOne == true, nextOrLimit reduces to sqrtPriceNextX96 >= sqrtPriceLimitX96
// sqrtPriceTargetX96 = max(sqrtPriceNextX96, sqrtPriceLimitX96)
// when zeroForOne == false, nextOrLimit reduces to sqrtPriceNextX96 < sqrtPriceLimitX96
// sqrtPriceTargetX96 = min(sqrtPriceNextX96, sqrtPriceLimitX96)
sqrtPriceNextX96 := and(sqrtPriceNextX96, 0xffffffffffffffffffffffffffffffffffffffff)
sqrtPriceLimitX96 := and(sqrtPriceLimitX96, 0xffffffffffffffffffffffffffffffffffffffff)
let nextOrLimit := xor(lt(sqrtPriceNextX96, sqrtPriceLimitX96), and(zeroForOne, 0x1))
let symDiff := xor(sqrtPriceNextX96, sqrtPriceLimitX96)
sqrtPriceTargetX96 := xor(sqrtPriceLimitX96, mul(symDiff, nextOrLimit))
}
}
/// @notice Computes the result of swapping some amount in, or amount out, given the parameters of the swap
/// @dev If the swap's amountSpecified is negative, the combined fee and input amount will never exceed the absolute value of the remaining amount.
/// @param sqrtPriceCurrentX96 The current sqrt price of the pool
/// @param sqrtPriceTargetX96 The price that cannot be exceeded, from which the direction of the swap is inferred
/// @param liquidity The usable liquidity
/// @param amountRemaining How much input or output amount is remaining to be swapped in/out
/// @param feePips The fee taken from the input amount, expressed in hundredths of a bip
/// @return sqrtPriceNextX96 The price after swapping the amount in/out, not to exceed the price target
/// @return amountIn The amount to be swapped in, of either currency0 or currency1, based on the direction of the swap
/// @return amountOut The amount to be received, of either currency0 or currency1, based on the direction of the swap
/// @return feeAmount The amount of input that will be taken as a fee
/// @dev feePips must be no larger than MAX_SWAP_FEE for this function. We ensure that before setting a fee using LPFeeLibrary.isValid.
function computeSwapStep(
uint160 sqrtPriceCurrentX96,
uint160 sqrtPriceTargetX96,
uint128 liquidity,
int256 amountRemaining,
uint24 feePips
) internal pure returns (uint160 sqrtPriceNextX96, uint256 amountIn, uint256 amountOut, uint256 feeAmount) {
unchecked {
uint256 _feePips = feePips; // upcast once and cache
bool zeroForOne = sqrtPriceCurrentX96 >= sqrtPriceTargetX96;
bool exactIn = amountRemaining < 0;
if (exactIn) {
uint256 amountRemainingLessFee =
FullMath.mulDiv(uint256(-amountRemaining), MAX_SWAP_FEE - _feePips, MAX_SWAP_FEE);
amountIn = zeroForOne
? SqrtPriceMath.getAmount0Delta(sqrtPriceTargetX96, sqrtPriceCurrentX96, liquidity, true)
: SqrtPriceMath.getAmount1Delta(sqrtPriceCurrentX96, sqrtPriceTargetX96, liquidity, true);
if (amountRemainingLessFee >= amountIn) {
// `amountIn` is capped by the target price
sqrtPriceNextX96 = sqrtPriceTargetX96;
feeAmount = _feePips == MAX_SWAP_FEE
? amountIn // amountIn is always 0 here, as amountRemainingLessFee == 0 and amountRemainingLessFee >= amountIn
: FullMath.mulDivRoundingUp(amountIn, _feePips, MAX_SWAP_FEE - _feePips);
} else {
// exhaust the remaining amount
amountIn = amountRemainingLessFee;
sqrtPriceNextX96 = SqrtPriceMath.getNextSqrtPriceFromInput(
sqrtPriceCurrentX96, liquidity, amountRemainingLessFee, zeroForOne
);
// we didn't reach the target, so take the remainder of the maximum input as fee
feeAmount = uint256(-amountRemaining) - amountIn;
}
amountOut = zeroForOne
? SqrtPriceMath.getAmount1Delta(sqrtPriceNextX96, sqrtPriceCurrentX96, liquidity, false)
: SqrtPriceMath.getAmount0Delta(sqrtPriceCurrentX96, sqrtPriceNextX96, liquidity, false);
} else {
amountOut = zeroForOne
? SqrtPriceMath.getAmount1Delta(sqrtPriceTargetX96, sqrtPriceCurrentX96, liquidity, false)
: SqrtPriceMath.getAmount0Delta(sqrtPriceCurrentX96, sqrtPriceTargetX96, liquidity, false);
if (uint256(amountRemaining) >= amountOut) {
// `amountOut` is capped by the target price
sqrtPriceNextX96 = sqrtPriceTargetX96;
} else {
// cap the output amount to not exceed the remaining output amount
amountOut = uint256(amountRemaining);
sqrtPriceNextX96 =
SqrtPriceMath.getNextSqrtPriceFromOutput(sqrtPriceCurrentX96, liquidity, amountOut, zeroForOne);
}
amountIn = zeroForOne
? SqrtPriceMath.getAmount0Delta(sqrtPriceNextX96, sqrtPriceCurrentX96, liquidity, true)
: SqrtPriceMath.getAmount1Delta(sqrtPriceCurrentX96, sqrtPriceNextX96, liquidity, true);
// `feePips` cannot be `MAX_SWAP_FEE` for exact out
feeAmount = FullMath.mulDivRoundingUp(amountIn, _feePips, MAX_SWAP_FEE - _feePips);
}
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Slot0 is a packed version of solidity structure.
* Using the packaged version saves gas by not storing the structure fields in memory slots.
*
* Layout:
* 24 bits empty | 24 bits lpFee | 12 bits protocolFee 1->0 | 12 bits protocolFee 0->1 | 24 bits tick | 160 bits sqrtPriceX96
*
* Fields in the direction from the least significant bit:
*
* The current price
* uint160 sqrtPriceX96;
*
* The current tick
* int24 tick;
*
* Protocol fee, expressed in hundredths of a bip, upper 12 bits are for 1->0, and the lower 12 are for 0->1
* the maximum is 1000 - meaning the maximum protocol fee is 0.1%
* the protocolFee is taken from the input first, then the lpFee is taken from the remaining input
* uint24 protocolFee;
*
* The current LP fee of the pool. If the pool is dynamic, this does not include the dynamic fee flag.
* uint24 lpFee;
*/
type Slot0 is bytes32;
using Slot0Library for Slot0 global;
/// @notice Library for getting and setting values in the Slot0 type
library Slot0Library {
uint160 internal constant MASK_160_BITS = 0x00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;
uint24 internal constant MASK_24_BITS = 0xFFFFFF;
uint8 internal constant TICK_OFFSET = 160;
uint8 internal constant PROTOCOL_FEE_OFFSET = 184;
uint8 internal constant LP_FEE_OFFSET = 208;
// #### GETTERS ####
function sqrtPriceX96(Slot0 _packed) internal pure returns (uint160 _sqrtPriceX96) {
assembly ("memory-safe") {
_sqrtPriceX96 := and(MASK_160_BITS, _packed)
}
}
function tick(Slot0 _packed) internal pure returns (int24 _tick) {
assembly ("memory-safe") {
_tick := signextend(2, shr(TICK_OFFSET, _packed))
}
}
function protocolFee(Slot0 _packed) internal pure returns (uint24 _protocolFee) {
assembly ("memory-safe") {
_protocolFee := and(MASK_24_BITS, shr(PROTOCOL_FEE_OFFSET, _packed))
}
}
function lpFee(Slot0 _packed) internal pure returns (uint24 _lpFee) {
assembly ("memory-safe") {
_lpFee := and(MASK_24_BITS, shr(LP_FEE_OFFSET, _packed))
}
}
// #### SETTERS ####
function setSqrtPriceX96(Slot0 _packed, uint160 _sqrtPriceX96) internal pure returns (Slot0 _result) {
assembly ("memory-safe") {
_result := or(and(not(MASK_160_BITS), _packed), and(MASK_160_BITS, _sqrtPriceX96))
}
}
function setTick(Slot0 _packed, int24 _tick) internal pure returns (Slot0 _result) {
assembly ("memory-safe") {
_result := or(and(not(shl(TICK_OFFSET, MASK_24_BITS)), _packed), shl(TICK_OFFSET, and(MASK_24_BITS, _tick)))
}
}
function setProtocolFee(Slot0 _packed, uint24 _protocolFee) internal pure returns (Slot0 _result) {
assembly ("memory-safe") {
_result :=
or(
and(not(shl(PROTOCOL_FEE_OFFSET, MASK_24_BITS)), _packed),
shl(PROTOCOL_FEE_OFFSET, and(MASK_24_BITS, _protocolFee))
)
}
}
function setLpFee(Slot0 _packed, uint24 _lpFee) internal pure returns (Slot0 _result) {
assembly ("memory-safe") {
_result :=
or(and(not(shl(LP_FEE_OFFSET, MASK_24_BITS)), _packed), shl(LP_FEE_OFFSET, and(MASK_24_BITS, _lpFee)))
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @notice library of functions related to protocol fees
library ProtocolFeeLibrary {
/// @notice Max protocol fee is 0.1% (1000 pips)
/// @dev Increasing these values could lead to overflow in Pool.swap
uint16 public constant MAX_PROTOCOL_FEE = 1000;
/// @notice Thresholds used for optimized bounds checks on protocol fees
uint24 internal constant FEE_0_THRESHOLD = 1001;
uint24 internal constant FEE_1_THRESHOLD = 1001 << 12;
/// @notice the protocol fee is represented in hundredths of a bip
uint256 internal constant PIPS_DENOMINATOR = 1_000_000;
function getZeroForOneFee(uint24 self) internal pure returns (uint16) {
return uint16(self & 0xfff);
}
function getOneForZeroFee(uint24 self) internal pure returns (uint16) {
return uint16(self >> 12);
}
function isValidProtocolFee(uint24 self) internal pure returns (bool valid) {
// Equivalent to: getZeroForOneFee(self) <= MAX_PROTOCOL_FEE && getOneForZeroFee(self) <= MAX_PROTOCOL_FEE
assembly ("memory-safe") {
let isZeroForOneFeeOk := lt(and(self, 0xfff), FEE_0_THRESHOLD)
let isOneForZeroFeeOk := lt(and(self, 0xfff000), FEE_1_THRESHOLD)
valid := and(isZeroForOneFeeOk, isOneForZeroFeeOk)
}
}
// The protocol fee is taken from the input amount first and then the LP fee is taken from the remaining
// The swap fee is capped at 100%
// Equivalent to protocolFee + lpFee(1_000_000 - protocolFee) / 1_000_000
/// @dev here `self` is just a single direction's protocol fee, not a packed type of 2 protocol fees
function calculateSwapFee(uint16 self, uint24 lpFee) internal pure returns (uint24 swapFee) {
// protocolFee + lpFee - (protocolFee * lpFee / 1_000_000). Div rounds up to favor LPs over the protocol.
assembly ("memory-safe") {
self := and(self, 0xfff)
lpFee := and(lpFee, 0xffffff)
let numerator := mul(self, lpFee)
let divRoundingUp := add(div(numerator, PIPS_DENOMINATOR), gt(mod(numerator, PIPS_DENOMINATOR), 0))
swapFee := sub(add(self, lpFee), divRoundingUp)
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title Math library for liquidity
library LiquidityMath {
/// @notice Add a signed liquidity delta to liquidity and revert if it overflows or underflows
/// @param x The liquidity before change
/// @param y The delta by which liquidity should be changed
/// @return z The liquidity delta
function addDelta(uint128 x, int128 y) internal pure returns (uint128 z) {
assembly ("memory-safe") {
z := add(and(x, 0xffffffffffffffffffffffffffffffff), signextend(15, y))
if shr(128, z) {
// revert SafeCastOverflow()
mstore(0, 0x93dafdf1)
revert(0x1c, 0x04)
}
}
}
}// 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
library FullMath {
/// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
/// @param a The multiplicand
/// @param b The multiplier
/// @param denominator The divisor
/// @return result The 256-bit result
/// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
function mulDiv(uint256 a, uint256 b, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = a * b
// Compute the product mod 2**256 and mod 2**256 - 1
// then use the Chinese Remainder Theorem to reconstruct
// the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2**256 + prod0
uint256 prod0 = a * b; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly ("memory-safe") {
let mm := mulmod(a, b, not(0))
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Make sure the result is less than 2**256.
// Also prevents denominator == 0
require(denominator > prod1);
// Handle non-overflow cases, 256 by 256 division
if (prod1 == 0) {
assembly ("memory-safe") {
result := div(prod0, denominator)
}
return result;
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0]
// Compute remainder using mulmod
uint256 remainder;
assembly ("memory-safe") {
remainder := mulmod(a, b, denominator)
}
// Subtract 256 bit number from 512 bit number
assembly ("memory-safe") {
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 = (0 - denominator) & denominator;
// Divide denominator by power of two
assembly ("memory-safe") {
denominator := div(denominator, twos)
}
// Divide [prod1 prod0] by the factors of two
assembly ("memory-safe") {
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 ("memory-safe") {
twos := add(div(sub(0, twos), twos), 1)
}
prod0 |= prod1 * twos;
// Invert denominator mod 2**256
// Now that denominator is an odd number, it has an inverse
// modulo 2**256 such that denominator * inv = 1 mod 2**256.
// Compute the inverse by starting with a seed that is correct
// correct for four bits. That is, denominator * inv = 1 mod 2**4
uint256 inv = (3 * denominator) ^ 2;
// Now use Newton-Raphson iteration to improve the precision.
// Thanks to Hensel's lifting lemma, this also works in modular
// arithmetic, doubling the correct bits in each step.
inv *= 2 - denominator * inv; // inverse mod 2**8
inv *= 2 - denominator * inv; // inverse mod 2**16
inv *= 2 - denominator * inv; // inverse mod 2**32
inv *= 2 - denominator * inv; // inverse mod 2**64
inv *= 2 - denominator * inv; // inverse mod 2**128
inv *= 2 - denominator * inv; // inverse mod 2**256
// Because the division is now exact we can divide by multiplying
// with the modular inverse of denominator. This will give us the
// correct result modulo 2**256. Since the preconditions guarantee
// that the outcome is less than 2**256, this is the final result.
// We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inv;
return result;
}
}
/// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
/// @param a The multiplicand
/// @param b The multiplier
/// @param denominator The divisor
/// @return result The 256-bit result
function mulDivRoundingUp(uint256 a, uint256 b, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
result = mulDiv(a, b, denominator);
if (mulmod(a, b, denominator) != 0) {
require(++result > 0);
}
}
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title Minimal ERC20 interface for Uniswap
/// @notice Contains a subset of the full ERC20 interface that is used in Uniswap V3
interface IERC20Minimal {
/// @notice Returns an account's balance in the token
/// @param account The account for which to look up the number of tokens it has, i.e. its balance
/// @return The number of tokens held by the account
function balanceOf(address account) external view returns (uint256);
/// @notice Transfers the amount of token from the `msg.sender` to the recipient
/// @param recipient The account that will receive the amount transferred
/// @param amount The number of tokens to send from the sender to the recipient
/// @return Returns true for a successful transfer, false for an unsuccessful transfer
function transfer(address recipient, uint256 amount) external returns (bool);
/// @notice Returns the current allowance given to a spender by an owner
/// @param owner The account of the token owner
/// @param spender The account of the token spender
/// @return The current allowance granted by `owner` to `spender`
function allowance(address owner, address spender) external view returns (uint256);
/// @notice Sets the allowance of a spender from the `msg.sender` to the value `amount`
/// @param spender The account which will be allowed to spend a given amount of the owners tokens
/// @param amount The amount of tokens allowed to be used by `spender`
/// @return Returns true for a successful approval, false for unsuccessful
function approve(address spender, uint256 amount) external returns (bool);
/// @notice Transfers `amount` tokens from `sender` to `recipient` up to the allowance given to the `msg.sender`
/// @param sender The account from which the transfer will be initiated
/// @param recipient The recipient of the transfer
/// @param amount The amount of the transfer
/// @return Returns true for a successful transfer, false for unsuccessful
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/// @notice Event emitted when tokens are transferred from one address to another, either via `#transfer` or `#transferFrom`.
/// @param from The account from which the tokens were sent, i.e. the balance decreased
/// @param to The account to which the tokens were sent, i.e. the balance increased
/// @param value The amount of tokens that were transferred
event Transfer(address indexed from, address indexed to, uint256 value);
/// @notice Event emitted when the approval amount for the spender of a given owner's tokens changes.
/// @param owner The account that approved spending of its tokens
/// @param spender The account for which the spending allowance was modified
/// @param value The new allowance from the owner to the spender
event Approval(address indexed owner, address indexed spender, uint256 value);
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title BitMath
/// @dev This library provides functionality for computing bit properties of an unsigned integer
/// @author Solady (https://github.com/Vectorized/solady/blob/8200a70e8dc2a77ecb074fc2e99a2a0d36547522/src/utils/LibBit.sol)
library BitMath {
/// @notice Returns the index of the most significant bit of the number,
/// where the least significant bit is at index 0 and the most significant bit is at index 255
/// @param x the value for which to compute the most significant bit, must be greater than 0
/// @return r the index of the most significant bit
function mostSignificantBit(uint256 x) internal pure returns (uint8 r) {
require(x > 0);
assembly ("memory-safe") {
r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x))
r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x))))
r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
r := or(r, shl(4, lt(0xffff, shr(r, x))))
r := or(r, shl(3, lt(0xff, shr(r, x))))
// forgefmt: disable-next-item
r := or(r, byte(and(0x1f, shr(shr(r, x), 0x8421084210842108cc6318c6db6d54be)),
0x0706060506020500060203020504000106050205030304010505030400000000))
}
}
/// @notice Returns the index of the least significant bit of the number,
/// where the least significant bit is at index 0 and the most significant bit is at index 255
/// @param x the value for which to compute the least significant bit, must be greater than 0
/// @return r the index of the least significant bit
function leastSignificantBit(uint256 x) internal pure returns (uint8 r) {
require(x > 0);
assembly ("memory-safe") {
// Isolate the least significant bit.
x := and(x, sub(0, x))
// For the upper 3 bits of the result, use a De Bruijn-like lookup.
// Credit to adhusson: https://blog.adhusson.com/cheap-find-first-set-evm/
// forgefmt: disable-next-item
r := shl(5, shr(252, shl(shl(2, shr(250, mul(x,
0xb6db6db6ddddddddd34d34d349249249210842108c6318c639ce739cffffffff))),
0x8040405543005266443200005020610674053026020000107506200176117077)))
// For the lower 5 bits of the result, use a De Bruijn lookup.
// forgefmt: disable-next-item
r := or(r, byte(and(div(0xd76453e0, shr(r, x)), 0x1f),
0x001f0d1e100c1d070f090b19131c1706010e11080a1a141802121b1503160405))
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @notice Interface for claims over a contract balance, wrapped as a ERC6909
interface IERC6909Claims {
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event OperatorSet(address indexed owner, address indexed operator, bool approved);
event Approval(address indexed owner, address indexed spender, uint256 indexed id, uint256 amount);
event Transfer(address caller, address indexed from, address indexed to, uint256 indexed id, uint256 amount);
/*//////////////////////////////////////////////////////////////
FUNCTIONS
//////////////////////////////////////////////////////////////*/
/// @notice Owner balance of an id.
/// @param owner The address of the owner.
/// @param id The id of the token.
/// @return amount The balance of the token.
function balanceOf(address owner, uint256 id) external view returns (uint256 amount);
/// @notice Spender allowance of an id.
/// @param owner The address of the owner.
/// @param spender The address of the spender.
/// @param id The id of the token.
/// @return amount The allowance of the token.
function allowance(address owner, address spender, uint256 id) external view returns (uint256 amount);
/// @notice Checks if a spender is approved by an owner as an operator
/// @param owner The address of the owner.
/// @param spender The address of the spender.
/// @return approved The approval status.
function isOperator(address owner, address spender) external view returns (bool approved);
/// @notice Transfers an amount of an id from the caller to a receiver.
/// @param receiver The address of the receiver.
/// @param id The id of the token.
/// @param amount The amount of the token.
/// @return bool True, always, unless the function reverts
function transfer(address receiver, uint256 id, uint256 amount) external returns (bool);
/// @notice Transfers an amount of an id from a sender to a receiver.
/// @param sender The address of the sender.
/// @param receiver The address of the receiver.
/// @param id The id of the token.
/// @param amount The amount of the token.
/// @return bool True, always, unless the function reverts
function transferFrom(address sender, address receiver, uint256 id, uint256 amount) external returns (bool);
/// @notice Approves an amount of an id to a spender.
/// @param spender The address of the spender.
/// @param id The id of the token.
/// @param amount The amount of the token.
/// @return bool True, always
function approve(address spender, uint256 id, uint256 amount) external returns (bool);
/// @notice Sets or removes an operator for the caller.
/// @param operator The address of the operator.
/// @param approved The approval status.
/// @return bool True, always
function setOperator(address operator, bool approved) external returns (bool);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {Currency} from "../types/Currency.sol";
import {IProtocolFeeController} from "../interfaces/IProtocolFeeController.sol";
import {PoolId} from "../types/PoolId.sol";
import {PoolKey} from "../types/PoolKey.sol";
/// @notice Interface for all protocol-fee related functions in the pool manager
interface IProtocolFees {
/// @notice Thrown when protocol fee is set too high
error ProtocolFeeTooLarge(uint24 fee);
/// @notice Thrown when the contract is unlocked
error ContractUnlocked();
/// @notice Thrown when collectProtocolFees or setProtocolFee is not called by the controller.
error InvalidCaller();
/// @notice Emitted when the protocol fee controller address is updated in setProtocolFeeController.
event ProtocolFeeControllerUpdated(address indexed protocolFeeController);
/// @notice Emitted when the protocol fee is updated for a pool.
event ProtocolFeeUpdated(PoolId indexed id, uint24 protocolFee);
/// @notice Given a currency address, returns the protocol fees accrued in that currency
/// @param currency The currency to check
/// @return amount The amount of protocol fees accrued in the currency
function protocolFeesAccrued(Currency currency) external view returns (uint256 amount);
/// @notice Sets the protocol fee for the given pool
/// @param key The key of the pool to set a protocol fee for
/// @param newProtocolFee The fee to set
function setProtocolFee(PoolKey memory key, uint24 newProtocolFee) external;
/// @notice Sets the protocol fee controller
/// @param controller The new protocol fee controller
function setProtocolFeeController(IProtocolFeeController controller) external;
/// @notice Collects the protocol fees for a given recipient and currency, returning the amount collected
/// @dev This will revert if the contract is unlocked
/// @param recipient The address to receive the protocol fees
/// @param currency The currency to withdraw
/// @param amount The amount of currency to withdraw
/// @return amountCollected The amount of currency successfully withdrawn
function collectProtocolFees(address recipient, Currency currency, uint256 amount)
external
returns (uint256 amountCollected);
/// @notice Returns the current protocol fee controller address
/// @return IProtocolFeeController The currency protocol fee controller
function protocolFeeController() external view returns (IProtocolFeeController);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @notice Interface for functions to access any storage slot in a contract
interface IExtsload {
/// @notice Called by external contracts to access granular pool state
/// @param slot Key of slot to sload
/// @return value The value of the slot as bytes32
function extsload(bytes32 slot) external view returns (bytes32 value);
/// @notice Called by external contracts to access granular pool state
/// @param startSlot Key of slot to start sloading from
/// @param nSlots Number of slots to load into return value
/// @return values List of loaded values.
function extsload(bytes32 startSlot, uint256 nSlots) external view returns (bytes32[] memory values);
/// @notice Called by external contracts to access sparse pool state
/// @param slots List of slots to SLOAD from.
/// @return values List of loaded values.
function extsload(bytes32[] calldata slots) external view returns (bytes32[] memory values);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
/// @notice Interface for functions to access any transient storage slot in a contract
interface IExttload {
/// @notice Called by external contracts to access transient storage of the contract
/// @param slot Key of slot to tload
/// @return value The value of the slot as bytes32
function exttload(bytes32 slot) external view returns (bytes32 value);
/// @notice Called by external contracts to access sparse transient pool state
/// @param slots List of slots to tload
/// @return values List of loaded values
function exttload(bytes32[] calldata slots) external view returns (bytes32[] memory values);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {PoolKey} from "../types/PoolKey.sol";
/// @notice Interface to fetch the protocol fees for a pool from the protocol fee controller
interface IProtocolFeeController {
/// @notice Returns the protocol fees for a pool given the conditions of this contract
/// @param poolKey The pool key to identify the pool. The controller may want to use attributes on the pool
/// to determine the protocol fee, hence the entire key is needed.
/// @return protocolFee The pool's protocol fee, expressed in hundredths of a bip. The upper 12 bits are for 1->0
/// and the lower 12 are for 0->1. The maximum is 1000 - meaning the maximum protocol fee is 0.1%.
/// the protocolFee is taken from the input first, then the lpFee is taken from the remaining input
function protocolFeeForPool(PoolKey memory poolKey) external view returns (uint24 protocolFee);
}// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Simple single owner authorization mixin.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol)
abstract contract Owned {
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event OwnershipTransferred(address indexed user, address indexed newOwner);
/*//////////////////////////////////////////////////////////////
OWNERSHIP STORAGE
//////////////////////////////////////////////////////////////*/
address public owner;
modifier onlyOwner() virtual {
require(msg.sender == owner, "UNAUTHORIZED");
_;
}
/*//////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(address _owner) {
owner = _owner;
emit OwnershipTransferred(address(0), _owner);
}
/*//////////////////////////////////////////////////////////////
OWNERSHIP LOGIC
//////////////////////////////////////////////////////////////*/
function transferOwnership(address newOwner) public virtual onlyOwner {
owner = newOwner;
emit OwnershipTransferred(msg.sender, newOwner);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {IERC6909Claims} from "./interfaces/external/IERC6909Claims.sol";
/// @notice Minimalist and gas efficient standard ERC6909 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC6909.sol)
/// @dev Copied from the commit at 4b47a19038b798b4a33d9749d25e570443520647
/// @dev This contract has been modified from the implementation at the above link.
abstract contract ERC6909 is IERC6909Claims {
/*//////////////////////////////////////////////////////////////
ERC6909 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address owner => mapping(address operator => bool isOperator)) public isOperator;
mapping(address owner => mapping(uint256 id => uint256 balance)) public balanceOf;
mapping(address owner => mapping(address spender => mapping(uint256 id => uint256 amount))) public allowance;
/*//////////////////////////////////////////////////////////////
ERC6909 LOGIC
//////////////////////////////////////////////////////////////*/
function transfer(address receiver, uint256 id, uint256 amount) public virtual returns (bool) {
balanceOf[msg.sender][id] -= amount;
balanceOf[receiver][id] += amount;
emit Transfer(msg.sender, msg.sender, receiver, id, amount);
return true;
}
function transferFrom(address sender, address receiver, uint256 id, uint256 amount) public virtual returns (bool) {
if (msg.sender != sender && !isOperator[sender][msg.sender]) {
uint256 allowed = allowance[sender][msg.sender][id];
if (allowed != type(uint256).max) allowance[sender][msg.sender][id] = allowed - amount;
}
balanceOf[sender][id] -= amount;
balanceOf[receiver][id] += amount;
emit Transfer(msg.sender, sender, receiver, id, amount);
return true;
}
function approve(address spender, uint256 id, uint256 amount) public virtual returns (bool) {
allowance[msg.sender][spender][id] = amount;
emit Approval(msg.sender, spender, id, amount);
return true;
}
function setOperator(address operator, bool approved) public virtual returns (bool) {
isOperator[msg.sender][operator] = approved;
emit OperatorSet(msg.sender, operator, approved);
return true;
}
/*//////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return interfaceId == 0x01ffc9a7 // ERC165 Interface ID for ERC165
|| interfaceId == 0x0f632fb3; // ERC165 Interface ID for ERC6909
}
/*//////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address receiver, uint256 id, uint256 amount) internal virtual {
balanceOf[receiver][id] += amount;
emit Transfer(msg.sender, address(0), receiver, id, amount);
}
function _burn(address sender, uint256 id, uint256 amount) internal virtual {
balanceOf[sender][id] -= amount;
emit Transfer(msg.sender, sender, address(0), id, amount);
}
}// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;
/// @title FixedPoint96
/// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format)
/// @dev Used in SqrtPriceMath.sol
library FixedPoint96 {
uint8 internal constant RESOLUTION = 96;
uint256 internal constant Q96 = 0x1000000000000000000000000;
}{
"remappings": [
"@uniswap/v4-core/=lib/v4-core/",
"forge-gas-snapshot/=lib/v4-core/lib/forge-gas-snapshot/src/",
"ds-test/=lib/v4-core/lib/forge-std/lib/ds-test/src/",
"forge-std/=lib/v4-core/lib/forge-std/src/",
"openzeppelin-contracts/=lib/v4-core/lib/openzeppelin-contracts/",
"solmate/=lib/v4-core/lib/solmate/",
"@ensdomains/=lib/v4-core/node_modules/@ensdomains/",
"@openzeppelin/=lib/v4-core/lib/openzeppelin-contracts/",
"@openzeppelin/contracts/=lib/v4-core/lib/openzeppelin-contracts/contracts/",
"erc4626-tests/=lib/v4-core/lib/openzeppelin-contracts/lib/erc4626-tests/",
"hardhat/=lib/v4-core/node_modules/hardhat/",
"permit2/=lib/permit2/",
"v4-core/=lib/v4-core/src/"
],
"optimizer": {
"enabled": true,
"runs": 44444444
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "cancun",
"viaIR": true,
"libraries": {}
}[{"inputs":[],"name":"AlreadyUnlocked","type":"error"},{"inputs":[],"name":"ContractUnlocked","type":"error"},{"inputs":[{"internalType":"address","name":"currency0","type":"address"},{"internalType":"address","name":"currency1","type":"address"}],"name":"CurrenciesOutOfOrderOrEqual","type":"error"},{"inputs":[],"name":"CurrencyNotSettled","type":"error"},{"inputs":[],"name":"DelegateCallNotAllowed","type":"error"},{"inputs":[],"name":"InvalidCaller","type":"error"},{"inputs":[],"name":"ManagerLocked","type":"error"},{"inputs":[],"name":"MustClearExactPositiveDelta","type":"error"},{"inputs":[],"name":"NonzeroNativeValue","type":"error"},{"inputs":[],"name":"PoolNotInitialized","type":"error"},{"inputs":[{"internalType":"uint24","name":"fee","type":"uint24"}],"name":"ProtocolFeeTooLarge","type":"error"},{"inputs":[],"name":"SwapAmountCannotBeZero","type":"error"},{"inputs":[{"internalType":"int24","name":"tickSpacing","type":"int24"}],"name":"TickSpacingTooLarge","type":"error"},{"inputs":[{"internalType":"int24","name":"tickSpacing","type":"int24"}],"name":"TickSpacingTooSmall","type":"error"},{"inputs":[],"name":"UnauthorizedDynamicLPFeeUpdate","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"PoolId","name":"id","type":"bytes32"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"}],"name":"Donate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"PoolId","name":"id","type":"bytes32"},{"indexed":true,"internalType":"Currency","name":"currency0","type":"address"},{"indexed":true,"internalType":"Currency","name":"currency1","type":"address"},{"indexed":false,"internalType":"uint24","name":"fee","type":"uint24"},{"indexed":false,"internalType":"int24","name":"tickSpacing","type":"int24"},{"indexed":false,"internalType":"contract IHooks","name":"hooks","type":"address"},{"indexed":false,"internalType":"uint160","name":"sqrtPriceX96","type":"uint160"},{"indexed":false,"internalType":"int24","name":"tick","type":"int24"}],"name":"Initialize","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"PoolId","name":"id","type":"bytes32"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"int24","name":"tickLower","type":"int24"},{"indexed":false,"internalType":"int24","name":"tickUpper","type":"int24"},{"indexed":false,"internalType":"int256","name":"liquidityDelta","type":"int256"},{"indexed":false,"internalType":"bytes32","name":"salt","type":"bytes32"}],"name":"ModifyLiquidity","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"OperatorSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"protocolFeeController","type":"address"}],"name":"ProtocolFeeControllerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"PoolId","name":"id","type":"bytes32"},{"indexed":false,"internalType":"uint24","name":"protocolFee","type":"uint24"}],"name":"ProtocolFeeUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"PoolId","name":"id","type":"bytes32"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"int128","name":"amount0","type":"int128"},{"indexed":false,"internalType":"int128","name":"amount1","type":"int128"},{"indexed":false,"internalType":"uint160","name":"sqrtPriceX96","type":"uint160"},{"indexed":false,"internalType":"uint128","name":"liquidity","type":"uint128"},{"indexed":false,"internalType":"int24","name":"tick","type":"int24"},{"indexed":false,"internalType":"uint24","name":"fee","type":"uint24"}],"name":"Swap","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"Currency","name":"currency","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"clear","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"Currency","name":"currency","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"collectProtocolFees","outputs":[{"internalType":"uint256","name":"amountCollected","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"internalType":"uint256","name":"amount0","type":"uint256"},{"internalType":"uint256","name":"amount1","type":"uint256"},{"internalType":"bytes","name":"hookData","type":"bytes"}],"name":"donate","outputs":[{"internalType":"BalanceDelta","name":"delta","type":"int256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"slot","type":"bytes32"}],"name":"extsload","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"startSlot","type":"bytes32"},{"internalType":"uint256","name":"nSlots","type":"uint256"}],"name":"extsload","outputs":[{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"slots","type":"bytes32[]"}],"name":"extsload","outputs":[{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"slots","type":"bytes32[]"}],"name":"exttload","outputs":[{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"slot","type":"bytes32"}],"name":"exttload","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"internalType":"uint160","name":"sqrtPriceX96","type":"uint160"}],"name":"initialize","outputs":[{"internalType":"int24","name":"tick","type":"int24"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isOperator","outputs":[{"internalType":"bool","name":"isOperator","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"components":[{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"int256","name":"liquidityDelta","type":"int256"},{"internalType":"bytes32","name":"salt","type":"bytes32"}],"internalType":"struct IPoolManager.ModifyLiquidityParams","name":"params","type":"tuple"},{"internalType":"bytes","name":"hookData","type":"bytes"}],"name":"modifyLiquidity","outputs":[{"internalType":"BalanceDelta","name":"callerDelta","type":"int256"},{"internalType":"BalanceDelta","name":"feesAccrued","type":"int256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"protocolFeeController","outputs":[{"internalType":"contract IProtocolFeeController","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"Currency","name":"currency","type":"address"}],"name":"protocolFeesAccrued","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setOperator","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"internalType":"uint24","name":"newProtocolFee","type":"uint24"}],"name":"setProtocolFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IProtocolFeeController","name":"controller","type":"address"}],"name":"setProtocolFeeController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"settle","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"settleFor","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"components":[{"internalType":"bool","name":"zeroForOne","type":"bool"},{"internalType":"int256","name":"amountSpecified","type":"int256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IPoolManager.SwapParams","name":"params","type":"tuple"},{"internalType":"bytes","name":"hookData","type":"bytes"}],"name":"swap","outputs":[{"internalType":"BalanceDelta","name":"swapDelta","type":"int256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"Currency","name":"currency","type":"address"}],"name":"sync","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"Currency","name":"currency","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"take","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"unlock","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"Currency","name":"currency0","type":"address"},{"internalType":"Currency","name":"currency1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickSpacing","type":"int24"},{"internalType":"contract IHooks","name":"hooks","type":"address"}],"internalType":"struct PoolKey","name":"key","type":"tuple"},{"internalType":"uint24","name":"newDynamicLPFee","type":"uint24"}],"name":"updateDynamicLPFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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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.