SwapSimulation

The SwapSimulation struct and its associated library are used to simulate a swap in a Uniswap V4 pool. This is a critical component for the JITHub to predict the outcome of a swap, including price impact and fees, before deciding whether to provide Just-In-Time liquidity.

SwapSimulation Struct

This struct holds the necessary parameters for a swap simulation.

struct SwapSimulation {
    IPoolManager manager;
    PoolId poolId;
    Pool.SwapParams swapParams;
}

• manager: The IPoolManager instance for the pool.

• poolId: The ID of the pool where the swap is being simulated.

• swapParams: The parameters of the swap to be simulated.

SwapSimulationLibrary

This library contains the logic for running the simulation.

Key Functions

• simulateSwapPLPLiquidity(SwapSimulation): This function simulates a swap using the existing passive liquidity in the pool. It calculates the resulting change in balances (swapDelta), the fees paid to the protocol, the total swap fee, and other results of the swap. This allows the JITHub to analyze the profitability of providing JIT liquidity for the given swap.