merge main

.forge-snapshots/PositionManager_burn_empty.snap

@@ -1 +1 @@
-50479
+50540

.forge-snapshots/PositionManager_burn_empty_native.snap

@@ -1 +1 @@
-50479
+50540

.forge-snapshots/PositionManager_burn_nonEmpty_native_withClose.snap

@@ -1 +1 @@
-125727
+125788

.forge-snapshots/PositionManager_burn_nonEmpty_native_withTakePair.snap

@@ -1 +1 @@
-125160
+125220

.forge-snapshots/PositionManager_burn_nonEmpty_withClose.snap

@@ -1 +1 @@
-132587
+132648

.forge-snapshots/PositionManager_burn_nonEmpty_withTakePair.snap

@@ -1 +1 @@
-132020
+132080

.forge-snapshots/PositionManager_collect_native.snap

@@ -1 +1 @@
-146495
+146518

.forge-snapshots/PositionManager_collect_sameRange.snap

@@ -1 +1 @@
-155070
+155093

.forge-snapshots/PositionManager_collect_withClose.snap

@@ -1 +1 @@
-155070
+155093

.forge-snapshots/PositionManager_collect_withTakePair.snap

@@ -1 +1 @@
-154373
+154396

.forge-snapshots/PositionManager_decreaseLiquidity_native.snap

@@ -1 +1 @@
-112141
+112160

.forge-snapshots/PositionManager_decreaseLiquidity_withClose.snap

@@ -1 +1 @@
-119951
+119974

.forge-snapshots/PositionManager_decreaseLiquidity_withTakePair.snap

@@ -1 +1 @@
-119254
+119277

.forge-snapshots/PositionManager_decrease_burnEmpty.snap

@@ -1 +1 @@
-135401
+135480

.forge-snapshots/PositionManager_decrease_burnEmpty_native.snap

@@ -1 +1 @@
-128541
+128620

.forge-snapshots/PositionManager_decrease_sameRange_allLiquidity.snap

@@ -1 +1 @@
-132638
+132661

.forge-snapshots/PositionManager_decrease_take_take.snap

@@ -1 +1 @@
-120541
+120564

.forge-snapshots/PositionManager_increase_autocompound_clearExcess.snap

@@ -1 +1 @@
-148288
+148338

.forge-snapshots/PositionManager_mint_native.snap

@@ -1 +1 @@
-366088
+366111

.forge-snapshots/PositionManager_mint_nativeWithSweep_withClose.snap

@@ -1 +1 @@
-374662
+374685

.forge-snapshots/PositionManager_mint_nativeWithSweep_withSettlePair.snap

@@ -1 +1 @@
-373857
+373880

.forge-snapshots/PositionManager_mint_onSameTickLower.snap

@@ -1 +1 @@
-317511
+317534

.forge-snapshots/PositionManager_mint_onSameTickUpper.snap

@@ -1 +1 @@
-318181
+318204

.forge-snapshots/PositionManager_mint_sameRange.snap

@@ -1 +1 @@
-243750
+243773

.forge-snapshots/PositionManager_mint_settleWithBalance_sweep.snap

@@ -1 +1 @@
-419040
+419063

.forge-snapshots/PositionManager_mint_warmedPool_differentRange.snap

@@ -1 +1 @@
-323542
+323565

.forge-snapshots/PositionManager_mint_withClose.snap

@@ -1 +1 @@
-420064
+420087

.forge-snapshots/PositionManager_mint_withSettlePair.snap

@@ -1 +1 @@
-419093
+419116

.forge-snapshots/PositionManager_multicall_initialize_mint.snap

@@ -1 +1 @@
-455908
+455931

src/PositionManager.sol

@@ -11,8 +11,9 @@ import {Position} from "@uniswap/v4-core/src/libraries/Position.sol";
 import {StateLibrary} from "@uniswap/v4-core/src/libraries/StateLibrary.sol";
 import {TransientStateLibrary} from "@uniswap/v4-core/src/libraries/TransientStateLibrary.sol";
 import {IAllowanceTransfer} from "permit2/src/interfaces/IAllowanceTransfer.sol";
-import {IPositionDescriptor} from "./interfaces/IPositionDescriptor.sol";
+import {TickMath} from "@uniswap/v4-core/src/libraries/TickMath.sol";
 
+import {IPositionDescriptor} from "./interfaces/IPositionDescriptor.sol";
 import {ERC721Permit_v4} from "./base/ERC721Permit_v4.sol";
 import {ReentrancyLock} from "./base/ReentrancyLock.sol";
 import {IPositionManager} from "./interfaces/IPositionManager.sol";
@@ -26,6 +27,7 @@ import {CalldataDecoder} from "./libraries/CalldataDecoder.sol";
 import {Permit2Forwarder} from "./base/Permit2Forwarder.sol";
 import {SlippageCheck} from "./libraries/SlippageCheck.sol";
 import {PositionInfo, PositionInfoLibrary} from "./libraries/PositionInfoLibrary.sol";
+import {LiquidityAmounts} from "./libraries/LiquidityAmounts.sol";
 import {NativeWrapper} from "./base/NativeWrapper.sol";
 import {IWETH9} from "./interfaces/external/IWETH9.sol";
 
@@ -199,6 +201,11 @@ contract PositionManager is
                     params.decodeModifyLiquidityParams();
                 _increase(tokenId, liquidity, amount0Max, amount1Max, hookData);
                 return;
+            } else if (action == Actions.INCREASE_LIQUIDITY_FROM_DELTAS) {
+                (uint256 tokenId, uint128 amount0Max, uint128 amount1Max, bytes calldata hookData) =
+                    params.decodeIncreaseLiquidityFromDeltasParams();
+                _increaseFromDeltas(tokenId, amount0Max, amount1Max, hookData);
+                return;
             } else if (action == Actions.DECREASE_LIQUIDITY) {
                 (uint256 tokenId, uint256 liquidity, uint128 amount0Min, uint128 amount1Min, bytes calldata hookData) =
                     params.decodeModifyLiquidityParams();
@@ -217,6 +224,18 @@ contract PositionManager is
                 ) = params.decodeMintParams();
                 _mint(poolKey, tickLower, tickUpper, liquidity, amount0Max, amount1Max, _mapRecipient(owner), hookData);
                 return;
+            } else if (action == Actions.MINT_POSITION_FROM_DELTAS) {
+                (
+                    PoolKey calldata poolKey,
+                    int24 tickLower,
+                    int24 tickUpper,
+                    uint128 amount0Max,
+                    uint128 amount1Max,
+                    address owner,
+                    bytes calldata hookData
+                ) = params.decodeMintFromDeltasParams();
+                _mintFromDeltas(poolKey, tickLower, tickUpper, amount0Max, amount1Max, _mapRecipient(owner), hookData);
+                return;
             } else if (action == Actions.BURN_POSITION) {
                 // Will automatically decrease liquidity to 0 if the position is not already empty.
                 (uint256 tokenId, uint128 amount0Min, uint128 amount1Min, bytes calldata hookData) =
@@ -283,6 +302,31 @@ contract PositionManager is
         (liquidityDelta - feesAccrued).validateMaxIn(amount0Max, amount1Max);
     }
 
+    /// @dev The liquidity delta is derived from open deltas in the pool manager.
+    function _increaseFromDeltas(uint256 tokenId, uint128 amount0Max, uint128 amount1Max, bytes calldata hookData)
+        internal
+        onlyIfApproved(msgSender(), tokenId)
+    {
+        (PoolKey memory poolKey, PositionInfo info) = getPoolAndPositionInfo(tokenId);
+
+        (uint160 sqrtPriceX96,,,) = poolManager.getSlot0(poolKey.toId());
+
+        // Use the credit on the pool manager as the amounts for the mint.
+        uint256 liquidity = LiquidityAmounts.getLiquidityForAmounts(
+            sqrtPriceX96,
+            TickMath.getSqrtPriceAtTick(info.tickLower()),
+            TickMath.getSqrtPriceAtTick(info.tickUpper()),
+            _getFullCredit(poolKey.currency0),
+            _getFullCredit(poolKey.currency1)
+        );
+
+        // Note: The tokenId is used as the salt for this position, so every minted position has unique storage in the pool manager.
+        (BalanceDelta liquidityDelta, BalanceDelta feesAccrued) =
+            _modifyLiquidity(info, poolKey, liquidity.toInt256(), bytes32(tokenId), hookData);
+        // Slippage checks should be done on the principal liquidityDelta which is the liquidityDelta - feesAccrued
+        (liquidityDelta - feesAccrued).validateMaxIn(amount0Max, amount1Max);
+    }
+
     /// @dev Calling decrease with 0 liquidity will credit the caller with any underlying fees of the position
     function _decrease(
         uint256 tokenId,
@@ -335,6 +379,29 @@ contract PositionManager is
         liquidityDelta.validateMaxIn(amount0Max, amount1Max);
     }
 
+    function _mintFromDeltas(
+        PoolKey calldata poolKey,
+        int24 tickLower,
+        int24 tickUpper,
+        uint128 amount0Max,
+        uint128 amount1Max,
+        address owner,
+        bytes calldata hookData
+    ) internal {
+        (uint160 sqrtPriceX96,,,) = poolManager.getSlot0(poolKey.toId());
+
+        // Use the credit on the pool manager as the amounts for the mint.
+        uint256 liquidity = LiquidityAmounts.getLiquidityForAmounts(
+            sqrtPriceX96,
+            TickMath.getSqrtPriceAtTick(tickLower),
+            TickMath.getSqrtPriceAtTick(tickUpper),
+            _getFullCredit(poolKey.currency0),
+            _getFullCredit(poolKey.currency1)
+        );
+
+        _mint(poolKey, tickLower, tickUpper, liquidity, amount0Max, amount1Max, owner, hookData);
+    }
+
     /// @dev this is overloaded with ERC721Permit_v4._burn
     function _burn(uint256 tokenId, uint128 amount0Min, uint128 amount1Min, bytes calldata hookData)
         internal
@@ -389,8 +456,10 @@ contract PositionManager is
 
     /// @dev integrators may elect to forfeit positive deltas with clear
     /// if the forfeit amount exceeds the user-specified max, the amount is taken instead
+    /// if there is no credit, no call is made.
     function _clearOrTake(Currency currency, uint256 amountMax) internal {
         uint256 delta = _getFullCredit(currency);
+        if (delta == 0) return;
 
         // forfeit the delta if its less than or equal to the user-specified limit
         if (delta <= amountMax) {

src/libraries/Actions.sol

@@ -10,32 +10,36 @@ library Actions {
     uint256 constant DECREASE_LIQUIDITY = 0x01;
     uint256 constant MINT_POSITION = 0x02;
     uint256 constant BURN_POSITION = 0x03;
+    uint256 constant INCREASE_LIQUIDITY_FROM_DELTAS = 0x04;
+    uint256 constant MINT_POSITION_FROM_DELTAS = 0x05;
+
     // swapping
-    uint256 constant SWAP_EXACT_IN_SINGLE = 0x04;
-    uint256 constant SWAP_EXACT_IN = 0x05;
-    uint256 constant SWAP_EXACT_OUT_SINGLE = 0x06;
-    uint256 constant SWAP_EXACT_OUT = 0x07;
+    uint256 constant SWAP_EXACT_IN_SINGLE = 0x06;
+    uint256 constant SWAP_EXACT_IN = 0x07;
+    uint256 constant SWAP_EXACT_OUT_SINGLE = 0x08;
+    uint256 constant SWAP_EXACT_OUT = 0x09;
     // donate
-    uint256 constant DONATE = 0x08;
+    uint256 constant DONATE = 0x0a;
 
     // closing deltas on the pool manager
     // settling
-    uint256 constant SETTLE = 0x09;
-    uint256 constant SETTLE_ALL = 0x10;
-    uint256 constant SETTLE_PAIR = 0x11;
+    uint256 constant SETTLE = 0x0b;
+    uint256 constant SETTLE_ALL = 0x0c;
+    uint256 constant SETTLE_PAIR = 0x0d;
     // taking
-    uint256 constant TAKE = 0x12;
-    uint256 constant TAKE_ALL = 0x13;
-    uint256 constant TAKE_PORTION = 0x14;
-    uint256 constant TAKE_PAIR = 0x15;
+    uint256 constant TAKE = 0x0e;
+    uint256 constant TAKE_ALL = 0x0f;
+    uint256 constant TAKE_PORTION = 0x10;
+    uint256 constant TAKE_PAIR = 0x11;
+
+    uint256 constant CLOSE_CURRENCY = 0x12;
+    uint256 constant CLEAR_OR_TAKE = 0x13;
+    uint256 constant SWEEP = 0x14;
 
-    uint256 constant CLOSE_CURRENCY = 0x17;
-    uint256 constant CLEAR_OR_TAKE = 0x18;
-    uint256 constant SWEEP = 0x19;
-    uint256 constant WRAP = 0x20;
-    uint256 constant UNWRAP = 0x21;
+    uint256 constant WRAP = 0x15;
+    uint256 constant UNWRAP = 0x16;
 
     // minting/burning 6909s to close deltas
-    uint256 constant MINT_6909 = 0x22;
-    uint256 constant BURN_6909 = 0x23;
+    uint256 constant MINT_6909 = 0x17;
+    uint256 constant BURN_6909 = 0x18;
 }

src/libraries/CalldataDecoder.sol

@@ -90,6 +90,21 @@ library CalldataDecoder {
         hookData = params.toBytes(4);
     }
 
+    /// @dev equivalent to: abi.decode(params, (uint256, uint128, uint128, bytes)) in calldata
+    function decodeIncreaseLiquidityFromDeltasParams(bytes calldata params)
+        internal
+        pure
+        returns (uint256 tokenId, uint128 amount0Max, uint128 amount1Max, bytes calldata hookData)
+    {
+        assembly ("memory-safe") {
+            tokenId := calldataload(params.offset)
+            amount0Max := calldataload(add(params.offset, 0x20))
+            amount1Max := calldataload(add(params.offset, 0x40))
+        }
+
+        hookData = params.toBytes(3);
+    }
+
     /// @dev equivalent to: abi.decode(params, (PoolKey, int24, int24, uint256, uint128, uint128, address, bytes)) in calldata
     function decodeMintParams(bytes calldata params)
         internal
@@ -117,6 +132,32 @@ library CalldataDecoder {
         hookData = params.toBytes(11);
     }
 
+    /// @dev equivalent to: abi.decode(params, (PoolKey, int24, int24, uint128, uint128, address, bytes)) in calldata
+    function decodeMintFromDeltasParams(bytes calldata params)
+        internal
+        pure
+        returns (
+            PoolKey calldata poolKey,
+            int24 tickLower,
+            int24 tickUpper,
+            uint128 amount0Max,
+            uint128 amount1Max,
+            address owner,
+            bytes calldata hookData
+        )
+    {
+        assembly ("memory-safe") {
+            poolKey := params.offset
+            tickLower := calldataload(add(params.offset, 0xa0))
+            tickUpper := calldataload(add(params.offset, 0xc0))
+            amount0Max := calldataload(add(params.offset, 0xe0))
+            amount1Max := calldataload(add(params.offset, 0x100))
+            owner := calldataload(add(params.offset, 0x120))
+        }
+
+        hookData = params.toBytes(10);
+    }
+
     /// @dev equivalent to: abi.decode(params, (uint256, uint128, uint128, bytes)) in calldata
     function decodeBurnParams(bytes calldata params)
         internal