Swapper

Enables swapping between an xPYT/NYT and its underlying asset by swapping via an external DEX and minting/burning xPYT/NYT.

Architecture

Swapper.sol: Abstract contract for swapping between xPYTs/NYTs and their underlying asset by swapping via an external DEX and minting/burning xPYT/NYT.
uniswap-v3/: Uniswap V3 support
- UniswapV3Swapper.sol: Swapper that uses Uniswap V3 to swap between xPYTs/NYTs
- UniswapV3Juggler.sol: Given xPYT/NYT input, computes how much to swap to result in an equal amount of PYT & NYT.
- lib/: Libraries used
  - PoolAddress.sol: Provides functions for deriving a Uniswap V3 pool address from the factory, tokens, and the fee
curve-v2/: Curve V2 support
- CurveV2Swapper.sol: Swapper that uses Curve V2 to swap between xPYTs/NYTs
- CurveV2Juggler.sol: Given xPYT/NYT input, computes how much to swap to result in an equal amount of PYT & NYT.
lib/: Helpful libraries
- ApproveMaxIfNeeded.sol: Gives max ERC20 approval to the spender if the current allowance is insufficient.

To install with DappTools:

dapp install timeless-fi/swapper

To install with Foundry:

forge install timeless-fi/swapper

This project uses Foundry as the development framework.

make install

make build

make test