Function: _executeSwap(address tokenIn, address tokenOut, uint256 fromAmount, uint24 fee)

This executes the swap with the simulated V3 pool from tokenIn, tokenOut, and fee.

Inputs

• tokenIn

  • Constraints: Should be a valid input token, such that the pool address generated is correct.

  • Impact: The address of the fromToken.

• tokenOut

  • Constraints: Should be a valid output token, such that the pool address generated is correct

  • Impact: The address of the toToken.

• fromAmount

  • Constraints: No constraints.

  • Impact: The amount of fromToken to swap.

• fee

  • Constraints: Should be the valid fee, such that the pool address generated is correct.

  • Impact: The fee for the pool.

Branches and code coverage (including function calls)

Intended branches

• The function handles swaps from tokenIn to tokenOut correctly.

  Test coverage

Function call analysis

• getPool(tokenIn, tokenOut, fee)

  • What is controllable? tokenIn, tokenOut, and fee.

  • If return value controllable, how is it used and how can it go wrong? The return value is used to select the pool for the swap.

  • What happens if it reverts, reenters, or does other unusual control flow? If this reverts, the entire call fails --- no reentrancy issues.

• IUniswapV3Pool(getPool(tokenIn, tokenOut, fee)).swap(...)

  • What is controllable? tokenIn, tokenOut, fee, address(this), zeroForOne, int256(fromAmount), sqrtPriceLimitX96, and data.

  • If return value controllable, how is it used and how can it go wrong? The return value is used to extract the amountOut.

  • What happens if it reverts, reenters, or does other unusual control flow? If this reverts, the entire call fails --- no reentrancy issues.