OpenMevZapperV01

Provides an optimal UniswapV2Pair Liquidity deposits and withdrawls with a single token / eth (or relevant native currency)

Functions

constructor

  function constructor(
  ) public

receive

  function receive(
  ) external

withdrawLiquidityAndSwap

  function withdrawLiquidityAndSwap(
    address pairAddress,
    uint256 withdrawAmount,
    address desiredToken,
    uint256 desiredTokenOutMin
  ) external returns (uint256 amountOut)

Removes liquidity from an ERC-20⇄ERC-20 pool into a single token / ETH . msg.sender should have already given the zapper an allowance of at least liquidity on the pool.

Parameters:

Name	Type	Description
pairAddress	address	Address of V2 pool
withdrawAmount	uint256	Amount of liquidity to withdraw
desiredToken	address	Withdrawl token desired
desiredTokenOutMin	uint256	Minimum amount of total desiredToken, can be 0

Return Values:

Type	Description
uint256	amountOut Amount of desiredToken received

swapAndStakeLiquidity

  function swapAndStakeLiquidity(
    address tokenA,
    address tokenB,
    uint256 amountA,
    uint256 amountBMin
  ) external returns (uint256 liquidity)

/ @notice Adds liquidity to an ERC-20⇄ERC-20 pool from a single token. msg.sender should have already given the router an allowance of at least amountA on tokenA

Parameters:

Name	Type	Description
tokenA	address	Token in pool
tokenB	address	Token in pool
amountA	uint256	Amount of token A desired to add to pool, inclusive of swap half to tokenB
amountBMin	uint256	Minimum amount of token B on swap, can be 0

Return Values:

Type	Description
uint256	liquidity amount of liquidity token received, sent to msg.sender

swapETHAndStakeLiquidity

  function swapETHAndStakeLiquidity(
    address tokenB,
    uint256 amountBMin
  ) external returns (uint256 liquidity)

Adds liquidity to an ERC-20⇄ERC-20 pool from eth. msg.value is treated as a amountETHDesired. Leftover ETH, if any, is returned to msg.sender

Parameters:

Name	Type	Description
tokenB	address	Token in pool
amountBMin	uint256	Minimum amount of token B on swap, can be 0

Return Values:

Type	Description
uint256	liquidity amount of liquidity token received, sent to msg.sender

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