After successful fill of our limit order we need to claim it to complete the process. Claiming of limit orders start from LimitOrderManager contract where we call the claimLimitOrder() function

LimitOrderManager.sol

claimLimitOrder()

/// @notice To Claim LimitOrder
/// @param tokenId limit order id
/// @param unwrapVault to user wallet/vault
function claimLimitOrder(uint256 tokenId, bool unwrapVault) public {

The function claimLimitOrder appears to be a function for claiming a previously placed limit order in a concentrated liquidity pool. The limit order is identified by its tokenId and the user calling the function must be the owner of the limit order. The unwrapVault parameter indicates whether the user wants to claim the order directly to their wallet or to a vault.

address recipient = limitOrderToken.ownerOf(tokenId);

LimitOrder memory limitOrder = limitOrders[tokenId];
IConcentratedLiquidityPoolStruct.LimitOrderTickData memory limitTick = limitOrder.pool.limitOrderTicks(limitOrder.tick);

require(limitOrder.status != LimitOrderStatus.closed, "Limit Order: Inactive");

uint256 totalClaimableAmount = limitOrder.amountOut - limitOrder.claimedAmount;

The first line assigns the recipient variable to the owner of the given tokenId as determined by the limitOrderToken contract.

The limitOrder variable is assigned to the LimitOrder struct stored in the limitOrders mapping at the index of tokenId.

The limitTick variable is assigned to the LimitOrderTickData struct in the limitOrderTicks mapping of the IConcentratedLiquidityPoolStruct contract at the index of limitOrder.tick.

A require statement checks that the status field of the limitOrder struct is not equal to LimitOrderStatus.closed. If it is, the function reverts with the error message "Limit Order: Inactive".

The totalClaimableAmount variable is assigned the value of the amountOut field of the limitOrder struct minus the claimedAmount field of the same struct. This represents the total amount that can still be claimed from this limit order.

uint256 amount;
if (limitOrder.zeroForOne) {
    amount = limitTick.token1ClaimableGrowth > limitOrder.claimableGrowth1
        ? (limitTick.token1Claimable >= totalClaimableAmount ? totalClaimableAmount : limitTick.token1Claimable)
        : 0;
} else {
    amount = limitTick.token0ClaimableGrowth > limitOrder.claimableGrowth0
        ? (limitTick.token0Claimable >= totalClaimableAmount ? totalClaimableAmount : limitTick.token0Claimable)
        : 0;
}

The amount variable will be set to the lesser of the total claimable amount and the amount that is currently claimable. If the limit order is a "zero for one" order, the amount will be set to the lesser of totalClaimableAmount and limitTick.token1Claimable if limitTick.token1ClaimableGrowth is greater than limitOrder.claimableGrowth1. If limitTick.token1ClaimableGrowth is not greater than limitOrder.claimableGrowth1, amount will be set to 0. If the limit order is not a "zero for one" order, the amount will be set to the lesser of totalClaimableAmount and limitTick.token0Claimable if limitTick.token0ClaimableGrowth is greater than limitOrder.claimableGrowth0. If limitTick.token0ClaimableGrowth is not greater than limitOrder.claimableGrowth0, amount will be set to 0.

require(amount > 0, "cant claim zero");
if (amount == 0) return;

limitOrder.pool.claimLimitOrder(amount, limitOrder.tick, limitOrder.zeroForOne);

limitOrders[tokenId].claimedAmount += amount;

(, , , , , , address _token0, address _token1) = limitOrder.pool.getImmutables();

This code snippet determines the amount of the limit order that can be claimed and calls the claimLimitOrder function on the pool contract to claim the amount. It then updates the claimedAmount field in the limitOrders mapping. It also gets the addresses of the tokens in the pool from the getImmutables function of the pool contract.