This way we can automatically replace the calldata when something changes. We don't need to manually replace the string ourselves.
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ENG-4453 Took 3 hours 26 minutes
- This fee is not the same depending on the fork. For example, Pancake V2 uses a 0.25% fee, while the USV2 fee is 0.3%. We were wrongly hard-coding this fee to 0.3%.
- For protocols like Balancer and Curve, which expect funds to be in the router at the time of swap, we must support also transferring funds from the user into the router. Doing this in the router would mean we are dealing with transfers in two different places: in the router main methods and in the executors. To avoid this, we are now performing transfers just in the executors, and two transfer types have been added to support transfers into the router.
TODO:
- Add this for Balancer and Curve (only added for USV4 atm).
- TODO consider renaming TRANSFER_FROM and TRANSFER_PERMIT2 to include "pool" in the name
- Renamed ExecutorTransferMethods to TokenTransfer to avoid leaking information about how the transfer happens into the executor. The executor shouldn't care if there are multiple methods or one single method that takes care of everything.
- Also renamed TransferMethod to TransferType to match the rust encoding
- Properly decode, update tests with proper decoding
- Added test case for each transfer method
- Also fully tested permit2 transferFrom and it works perfectly.
TODO:
- Fix integration tests once encoding is implemented.
- Needed to take pool code init hash as input param for executors
- Added tests for ethereum. Will test base on-chain.
- Important note: Pancakeswap uses their deployer instead of their factory (this is a different address) for target verification.
- This factory is not the same for Ethereum and Base, so Base txs were failing when verifying pool addresses.
- I've double checked that we don't have this problem for Balancer V2 - the vault address in the same on Base and on Ethereum Mainnet.
Make TychoRouter inherit from SafeCallback and then delegatecall to the UniswapV4 executor
Add a test for this. I had to update the block of our forked network in the tests. Because of this I had to update all the asserts in previous tests
Had to change the optimizer_runs in foundry.toml because of weird Yul errors when compiling
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ENG-4223 Took 1 hour 21 minutes
Took 7 seconds
Took 35 seconds
Changes:
- If the tokenIn is ETH, skip permit2 approval
- Make executors payable: When using delegatecall the executor inherits the execution context of whoever calls it. Our main swap function can accept ETH, it needs to be payable so by consequence the executors also need to be.
- Set uniswap v2 executor in test router
- Add tests for all possible cases of swap
- Add tests for all cases of splitSwap
- Add test functions to handle permit2 and encode swaps
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ENG-4041 Took 3 hours 50 minutes
Took 49 seconds
Took 14 seconds
