DexSwapperUManager

Git Source

Inherits: UManager

Required Merkle Root Leaves

• ERC20 approves with router spender.

• IUniswapV3Router.exactInput(params), with all desired paths.

State Variables

MAX_SLIPPAGE

uint256 internal constant MAX_SLIPPAGE = 0.1e4;

allowedSlippage

Slippage check enforced after swaps.

uint16 public allowedSlippage = 0.0005e4;

router

The UniswapV3 Router.

IUniswapV3Router internal immutable router;

balancerVault

The BalancerVault this uManager works with.

BalancerVault internal immutable balancerVault;

priceRouter

The PriceRouter contract used to check slippage.

PriceRouter internal immutable priceRouter;

Functions

constructor

constructor(
    address _owner,
    address _manager,
    address _boringVault,
    address _router,
    address _balancerVault,
    address _priceRouter
)
    UManager(_owner, _manager, _boringVault);

setAllowedSlippage

Sets the maximum allowed slippage during a swap.

Callable by MULTISIG_ROLE.

function setAllowedSlippage(uint16 _allowedSlippage) external requiresAuth;

swapWithUniswapV3

Performs a swap using the UniswapV3 Router, and enforces a slippage check.

Callable by STRATEGIST_ROLE.

function swapWithUniswapV3(
    bytes32[][] calldata manageProofs,
    address[] calldata decodersAndSanitizers,
    ERC20[] memory path,
    uint24[] memory fees,
    uint256 amountIn,
    uint256 amountOutMinimum,
    uint256 deadline
)
    external
    requiresAuth
    enforceRateLimit;

Parameters

Name	Type	Description
manageProofs	bytes32[][]	2 manage proofs, the first one for the ERC20 approval, and the second for the router exactInput call
decodersAndSanitizers	address[]	2 DecodersAndSanitizers one that implements ERC20 approve, and one that implements IUniswapV3Router.exactInput(params)
path	ERC20[]	the ERC20 token swap path
fees	uint24[]	the fees to specify which pools to swap with
amountIn	uint256	the amount of path[0] to swap
amountOutMinimum	uint256	the minimum amount of path[path.length - 1] to get out from the swap
deadline	uint256	the swap deadline

swapWithBalancerV2

Performs a swap using the BalancerV2 Vault, and enforces a slippage check.

Callable by STRATEGIST_ROLE.

function swapWithBalancerV2(
    bytes32[][] calldata manageProofs,
    address[] calldata decodersAndSanitizers,
    DecoderCustomTypes.SingleSwap calldata singleSwap,
    DecoderCustomTypes.FundManagement calldata funds,
    uint256 limit,
    uint256 deadline
)
    external
    requiresAuth
    enforceRateLimit;

Parameters

Name	Type	Description
manageProofs	bytes32[][]	2 manage proofs, the first one for the ERC20 approval, and the second for the swap
decodersAndSanitizers	address[]	2 DecodersAndSanitizers one that implements ERC20 approve, and one that implements BalancerV2Vault.swap
singleSwap	DecoderCustomTypes.SingleSwap	the swap data
funds	DecoderCustomTypes.FundManagement	the fund management data
limit	uint256	the maximum amount of assetIn to swap, or the minimum amount of assets out to receive
deadline	uint256	the swap deadline

swapWithCurve

Performs a swap using a Curve pool, and enforces a slippage check.

Callable by STRATEGIST_ROLE.

function swapWithCurve(
    bytes32[][] memory manageProofs,
    address[] memory decodersAndSanitizers,
    CurveInfo memory info,
    uint256 i,
    uint256 j,
    uint256 dx,
    uint256 min_dy
)
    external
    requiresAuth
    enforceRateLimit;

Parameters

Name	Type	Description
manageProofs	bytes32[][]	2 manage proofs, the first one for the ERC20 approval, and the second for the swap
decodersAndSanitizers	address[]	2 DecodersAndSanitizers one that implements ERC20 approve, and one that implements CurvePool.exchange
info	CurveInfo	the Curve pool info
i	uint256	the index of the token to swap from
j	uint256	the index of the token to swap to
dx	uint256	the amount of token i to swap
min_dy	uint256	the minimum amount of token j to receive

Events

SlippageUpdated

event SlippageUpdated(uint16 oldSlippage, uint16 newSlippage);

Errors

DexSwapperUManager__Slippage

error DexSwapperUManager__Slippage();

DexSwapperUManager__NewSlippageTooLarge

error DexSwapperUManager__NewSlippageTooLarge();

DexSwapperUManager__UniswapV3BadPathOrFees

error DexSwapperUManager__UniswapV3BadPathOrFees();

Structs

CurveInfo

Data needed to swap in a Curve pool

This was made into a struct to prevent stack too deep errors.

struct CurveInfo {
    address pool;
    ERC20 assetIn;
    ERC20 assetOut;
    bytes4 selector;
}