* Update all dependencies to 1.7.3, fix issues
* Remove esm from mocha
* Fix missed token test
* Also update rust version
* token-swap: update tolerance on sim test
* Run `cargo clippy --fix` for needless_borrow errors
* Rerun cargo fmt
* WIP: Implementation of the remainder of stablecurve methods
* Edits based on PR feedback
* revert SwapVersion
* PR fixes
* checked add / sub
* reverted to using RoundDirection instead of LiquidityProviderOperaiton
* removed LiquidityProviderOperation enum
* Revert flipped parameters
* initial attempt at noramlized_value
* use d for noramlize value for stable curve
* TradeDirection instead of RoundDirection for trading_tokens_to_pool_tokens
* reimplemented the trading_tokens_to_pool tokens function for stable
* Typo
* fix rounding errors in pool_tokens_to_trading_tokens
* try different values of amplification factor in test for stable curve
* fixed broken tests, use constant_product normalized_value function
* use cubic solver
* fix noramlize_value function bad maths
* redid noramlized value for one last time
* added more proptests
* Get tests to work
* Fixup for prod usage
Co-authored-by: Yutaro Mori <me@yutaromori.com>
Co-authored-by: Jon Cinque <jon.cinque@gmail.com>
* Add rounding specification for deposit / withdraw
The fuzzing test was improved to make sure that the value of pool tokens
(minus fees) never changed, which revealed a calc bug with deposits and
withdrawals. If someone withdraws, they can take additional small
value out of the pool in the form of truncated value.
Before, deposit and withdrawal used the same calculation, rounding up the token
A and B amounts. Remember that deposit / withdrawal specify the pool
token amount, and calculate the amount of A / B required to get to that
many pool tokens. On withdrawal, we were giving back a little bit too
much. The concept is that everything would even out since a deposit is
required for a withdrawal, which makes everything a wash.
Fuzzing found this issue very quickly! The change is to introduce a
rounding parameter to avoid ever giving away too much value, either
during deposit or withdrawal.
* Cleanup
* Add withdraw test
* Cleanup
* Cargo fmt
* Remove curve tests from fuzzing cfg
* Update JS test
* Cleanup test
* Update honggfuzz again
* Fix fee on JS test
* Force correct version of honggfuzz for CI (remove later)
* Improve value tests using PreciseNumber everywhere
* Fix ceiling
* Add comment for 0 tokens
* Fix ceiling div, add in constant price calc
* Revert ceiling division as template and use trait, too much boilerplate
* Run cargo fmt
* Add extra check on instruction fuzz
* Refactor division
* Fix tests from fixed deposit math
* Fixup comments and cleanup fuzz
* Run fmt
* Address review feedback
* Fix JS test
* Add price parameter for flat / constant price curve
This encompasses a lot of changes to properly support the constant price
curve, and fixes some old pain points to make the whole thing easier to
use, including:
* refactor fees out of the curve
* move all fee calculations into new Fees type
* modify constraints to only care about curve types and fee
* add price parameter into constant price curve (flat curve)
* Run cargo fmt and clippy
* Revert interface changes and math update
* Run cargo fmt
* Address review feedback
* Fix fraction validation for zeros
* Add extra check
* Add extra check on init
* Run cargo fmt
* Clippy
* Add token program id check on unpack
* Run cargo fmt
* Add checks for program id ownership on swap account
* Add truncation check during swapping
* Run cargo fmt
* Update truncation to ceiling the value
* Run cargo fmt
* Fix JS test
* Refund back not needed source tokens
* Run cargo fmt
* Add swap_without_fees method to trait
* Fix merge problem
Co-authored-by: Justin Starry <justin@solana.com>
* Stable curve math rewritten to 256-bit, reference simulation added with test integration
* Formatting error fixed
* Clippy warnings fixed
* Fixed dependencies to remove crates not supportinf bpf
* Fixed indentations
* Fixed lint errors
* Fixed format warnings
* Fixing clippy lint errors
* U256 math and simulation library refactoring, checked math used everywhere, other small fixes
* Fixed conversion to optional u128
* Added stable curve invariant to the token swap smart contract
* Fixed formatting
* Added missing stable curve constraints
* Symbol renames to make math clearer
* Small refactoring according to PR comments, fixes for JS tests
Jon Cinque
kampung-tech
Brian Anderson
akamutsu
Yuriy Savchenko