Uniswap has a Universal Router which allows users to execute different operations, including but not limited to:
- v2 swaps
- v3 swaps
- wrap/unwrap ETH
All of these different operations and more can be invoked the same way:
- v2 swaps
- v3 swaps
- wrap/unwrap ETH
All of these different operations and more can be invoked the same way:
The dispatch function you can see here might look a bit complex on the first view, but actually it is pretty trivial.
The caller can simply invoke the execute function by providing an argument of different operations and a corresponding array of calldatas:
It will simply loop over all commands, execute each command following the approach above with the corresponding input/calldata.
That means you can combine several operations (v2Swaps, v3Swaps, refunds, etc) in one single transaction.
There's a lot more to tell about this architecture so if you're interested leave a comment.
