BalancerV3Swapper

Git Source

Inherits: ERC20Selectors, Masks

Title: Balancer V3 type swapper contract

Can only be executed within manager.unlock() Ergo, if Balancer v3 is in the path (no matter how many times), one has to push the swap data and execution into the BalancerV3.unlock This should be usable together with flash loans from their singleton Can unlock arbitrary times times! The execution of a swap follows the steps: 1) pm.unlock(...) (outside of this contract) 2) call pm.swap(...) 3) call pm.settle to settle the swap (no native accepted)

State Variables

SWAP

We need all these selectors for executing a single swap

bytes32 private constant SWAP = 0x2bfb780c00000000000000000000000000000000000000000000000000000000

SETTLE

same selector string name as for UniV4, different params for balancer

bytes32 private constant SETTLE = 0x15afd40900000000000000000000000000000000000000000000000000000000

SEND_TO

pull funds from vault with this

bytes32 private constant SEND_TO = 0xae63932900000000000000000000000000000000000000000000000000000000

Functions

constructor

constructor() ;

_swapBalancerV3ExactInGeneric

Swaps exact input on Balancer V3 pools

Can only be executed within manager.unlock(). Can unlock arbitrary times.

Note: calldata-offset-table:

function _swapBalancerV3ExactInGeneric(
    uint256 fromAmount,
    address tokenIn,
    address tokenOut,
    address receiver,
    uint256 currentOffset,
    address callerAddress
)
    internal
    returns (
        uint256 receivedAmount,
        // similar to other implementations, we use this temp variable
        // to avoid stackToo deep
        uint256 tempVar
    );

Parameters

Returns