Also added a getForkBlock() on TychoRouterTestSetup.
Moved the router balancer test inside the Balancer file and created a TychoRouterForBalancerV3Test to wrap it
Took 1 hour 10 minutes
Took 21 seconds
Refactor BalancerV3Executor to have an inner _swapCallback method with the real swapping logic. Then we have two external methods:
- handleCallback: called by the router. Here we need to remove the first 68 bytes (4 selector + 32 dataOffset + 32 dataLength)
- swapCallback: called by the Vault directly if we are swapping against the executor directly (no router involved)
Took 1 minute
we will never perform a manual transfer into these protocols, as they require the tokens to be in the router contract in order to perform a transferFrom.
Delete TokenTransfer.sol
Make slither happy
Bugfixes:
- Executors
- Ekubo:
- Fix the POOL_DATA_OFFSET value and remove sender from callback data
- Use SafeERC20
- Maverick and Univ2: Use safeTransfer and not safeTransferFrom
- Univ3: update expected data length
- Univ4: update the selectors (the signature changed)
- Router:
- For split swap we don't need to pass the tokenInReceiver, it should always be the router address
- For single and sequential: change order of the parameters (to be before the permit2 specific objects)
- Encoders:
- Update selector signatures
- For split swap pass the transfer_from (we might not need to if the token in is ETH)
Took 2 hours 51 minutes
- Also added integration test to test the optimizations, where we can see the in and out transfers being optimized if we enable verbose foundry testing
- Fixed typo in swap encoder builder initialization
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%.
- We have decided to now support calling our executors normally (without using delegatecalls) since they now support specifying token transfers.
- This was disabled for UniswapV3 in the past also because of data decoding issues. This seems to be the solution, though.
- In Tycho Router
- Fix integration tests
- If the trade is cyclical, we can't do the balance check for the correctness of the amountOut transfers
- In encoding,
- if it is a wrap trade, the transfer should be just a normal Transfer (not TransferFrom nor a Permit2Transfer)
- add test names to println! statements
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ENG-4315 Took 1 hour 0 minutes
Took 30 seconds
Took 21 seconds
Took 16 seconds
Took 17 seconds
Add transfer in Executor and pass receiver address in encoding
This is done by using the TAKE action instead of TAKE_ALL
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ENG-4315 Took 1 hour 36 minutes
Took 2 minutes
Add transfer in Executor and pass receiver address in encoding
Remove integration test with StETH pool because we don't support it at simulation level and there is something weird with the amounts (that it is not worth it to investigate now)
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ENG-4315 Took 34 minutes
Took 2 minutes
- This needed to be in BalancerV2 so that the executor can also take care of transfers from the user into the tycho router, to avoid having transfer actions mixed between the router and executors
- This needed to be in Curve so that the executor can also take care of transfers from the user into the tycho router, to avoid having transfer actions mixed between the router and executors
- 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.
- Also do some renamings and comment improvements:
transfer method -> type
- Remove integration tests since we no longer support direct calls to USV3 executor, even for testing.
- 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.
NOTE:
UniswapV3 doesn't support NONE as a transfer method.
TODO:
- Fix integration tests once encoding is implemented.
- 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.
