Last update: September 30, 2021

IndexPool

Trident exchange pool template with constant mean formula for swapping among an array of ERC-20 tokens.

The reserves are stored as bento shares. The curve is applied to shares as well. This pool does not care about the underlying amounts.

Functions

constructor

  function constructor(
  ) public

mint

  function mint(
  ) public returns (uint256 liquidity)

Mints LP tokens - should be called via the router after transferring bento tokens. The router must ensure that sufficient LP tokens are minted by using the return value.

burn

  function burn(
  ) public returns (struct IPool.TokenAmount[] withdrawnAmounts)

Burns LP tokens sent to this contract. The router must ensure that the user gets sufficient output tokens.

burnSingle

  function burnSingle(
  ) public returns (uint256 amountOut)

Burns LP tokens sent to this contract and swaps one of the output tokens for another

i.e., the user gets a single token out by burning LP tokens.

swap

  function swap(
  ) public returns (uint256 amountOut)

Swaps one token for another. The router must prefund this contract and ensure there isn’t too much slippage.

flashSwap

  function flashSwap(
  ) public returns (uint256 amountOut)

Swaps one token for another. The router must support swap callbacks and ensure there isn’t too much slippage.

updateBarFee

  function updateBarFee(
  ) public

Updates barFee for Trident protocol.

_balance

  function _balance(
  ) internal returns (uint256 balance)

_getAmountOut

  function _getAmountOut(
  ) internal returns (uint256 amountOut)

_compute

  function _compute(
  ) internal returns (uint256 output)

_computeSingleOutGivenPoolIn

  function _computeSingleOutGivenPoolIn(
  ) internal returns (uint256 amountOut)

_pow

  function _pow(
  ) internal returns (uint256 output)

_powApprox

  function _powApprox(
  ) internal returns (uint256 sum)

_subFlag

  function _subFlag(
  ) internal returns (uint256 difference, bool flag)

_mul

  function _mul(
  ) internal returns (uint256 c2)

_div

  function _div(
  ) internal returns (uint256 c2)

_transfer

  function _transfer(
  ) internal

getAssets

  function getAssets(
  ) public returns (address[] assets)

getAmountOut

  function getAmountOut(
  ) public returns (uint256 amountOut)

getReservesAndWeights

  function getReservesAndWeights(
  ) public returns (uint256[] reserves, uint136[] weights)

Events

Mint

  event Mint(
  )

Burn

  event Burn(
  )