Exchange

InternalReplaySwapParams​

  struct InternalReplaySwapParams(
    address baseToken
    bool isBaseToQuote
    bool isExactInput
    uint256 amount
    uint160 sqrtPriceLimitX96
    address trader
  )

InternalSwapResponse​

  struct InternalSwapResponse(
    int256 base
    int256 quote
    int256 exchangedPositionSize
    int256 exchangedPositionNotional
    uint256 fee
    uint256 insuranceFundFee
    int24 tick
  )

InternalRealizePnlParams​

  struct InternalRealizePnlParams(
    address trader
    address baseToken
    int256 takerPositionSize
    int256 takerOpenNotional
    int256 base
    int256 quote
  )

Functions​

initialize​

  function initialize(
  ) external

setAccountBalance​

  function setAccountBalance(
    address AccountBalance
  ) external

Parameters:​

Name	Type	Description
AccountBalance	address	contract address

setMaxTickCrossedWithinBlock​

  function setMaxTickCrossedWithinBlock(
    address baseToken,
    uint24 maxTickCrossedWithinBlock
  ) external

Restrict the price impact by setting the ticks can be crossed within a block when trader reducing liquidity. It is used to prevent the malicious behavior of the malicious traders. The restriction is applied in _isOverPriceLimitWithTick()

Parameters:​

Name	Type	Description
baseToken	address	The base token address
maxTickCrossedWithinBlock	uint24	The maximum ticks can be crossed within a block

uniswapV3SwapCallback​

  function uniswapV3SwapCallback(
    int256 amount0Delta,
    int256 amount1Delta,
    bytes data
  ) external

Called to msg.sender after executing a swap via IUniswapV3Pool#swap.

This callback is forwarded to ClearingHouse.uniswapV3SwapCallback() because all the tokens are stored in there.

Parameters:​

Name	Type	Description
amount0Delta	int256	The amount of token0 that was sent (negative) or must be received (positive) by the pool by

the end of the swap. If positive, the callback must send that amount of token0 to the pool. |amount1Delta | int256 | The amount of token1 that was sent (negative) or must be received (positive) by the pool by the end of the swap. If positive, the callback must send that amount of token1 to the pool. |data | bytes | Any data passed through by the caller via the IUniswapV3PoolActions#swap call

swap​

  function swap(
    struct IExchange.SwapParams params
  ) external returns (struct IExchange.SwapResponse)

The actual swap function

can only be called from ClearingHouse

Parameters:​

Name	Type	Description
params	struct IExchange.SwapParams	The parameters of the swap

Return Values:​

Name	Type	Description
The	struct IExchange.SwapResponse	result of the swap

settleFunding​

  function settleFunding(
  ) external returns (int256 fundingPayment, struct Funding.Growth fundingGrowthGlobal)

Settle the funding payment for the time interval since the last settlement

This function should be called at the beginning of every high-level function, such as openPosition() while it doesn't matter who calls this function this function 1. settles personal funding payment 2. updates global funding growth personal funding payment is settled whenever there is pending funding payment the global funding growth update only happens once per unique timestamp (not blockNumber, due to Arbitrum)

Return Values:​

Name	Type	Description
fundingPayment	int256	the funding payment of a trader in one market should be settled into owned realized Pnl
fundingGrowthGlobal	struct Funding.Growth	the up-to-date globalFundingGrowth, usually used for later calculations

getOrderBook​

  function getOrderBook(
  ) external returns (address)

Get OrderBook contract address

Return Values:​

Name	Type	Description
orderBook	address	OrderBook contract address

getAccountBalance​

  function getAccountBalance(
  ) external returns (address)

Get AccountBalance contract address

Return Values:​

Name	Type	Description
accountBalance	address	AccountBalance contract address

getClearingHouseConfig​

  function getClearingHouseConfig(
  ) external returns (address)

Get ClearingHouseConfig contract address

Return Values:​

Name	Type	Description
clearingHouse	address	ClearingHouseConfig contract address

getMaxTickCrossedWithinBlock​

  function getMaxTickCrossedWithinBlock(
    address baseToken
  ) external returns (uint24)

Get the max ticks allowed to be crossed within a block when reducing position

Parameters:​

Name	Type	Description
baseToken	address	Address of the base token

Return Values:​

Name	Type	Description
maxTickCrossedWithinBlock	uint24	The max ticks allowed to be crossed within a block when reducing position

getPnlToBeRealized​

  function getPnlToBeRealized(
    struct IExchange.RealizePnlParams params
  ) external returns (int256)

Get the pnl that can be realized if trader reduce position

This function normally won't be needed by traders, but it might be useful for 3rd party

Parameters:​

Name	Type	Description
params	struct IExchange.RealizePnlParams	The params needed to do the query, encoded as RealizePnlParams in calldata

Return Values:​

Name	Type	Description
pnlToBeRealized	int256	The pnl that can be realized if trader reduce position

getAllPendingFundingPayment​

  function getAllPendingFundingPayment(
  ) external returns (int256 pendingFundingPayment)

Get all the pending funding payment for a trader

Return Values:​

Name	Type	Description
pendingFundingPayment	int256	The pending funding payment of the trader.

Positive value means the trader pays funding, negative value means the trader receives funding.

isOverPriceSpread​

  function isOverPriceSpread(
    address baseToken
  ) external returns (bool)

Check if current price spread between market price and index twap is over maximum price spread.

Parameters:​

Name	Type	Description
baseToken	address	Address of the base token

Return Values:​

Name	Type	Description
true	bool	if over the maximum price spread

getSqrtMarkTwapX96​

  function getSqrtMarkTwapX96(
    address baseToken,
    uint32 twapInterval
  ) external returns (uint160)

Deprecated function, will be removed in the next release, use getSqrtMarketTwapX96() instead Get the square root of the market twap price with the given time interval

The return value is a X96 number

Parameters:​

Name	Type	Description
baseToken	address	Address of the base token
twapInterval	uint32	The time interval in seconds

Return Values:​

Name	Type	Description
sqrtMarkTwapX96	uint160	The square root of the market twap price

getSqrtMarketTwapX96​

  function getSqrtMarketTwapX96(
    address baseToken,
    uint32 twapInterval
  ) external returns (uint160)

Get the square root of the market twap price with the given time interval

The return value is a X96 number

Parameters:​

Name	Type	Description
baseToken	address	Address of the base token
twapInterval	uint32	The time interval in seconds

Return Values:​

Name	Type	Description
sqrtMarketTwapX96	uint160	The square root of the market twap price

getPendingFundingPayment​

  function getPendingFundingPayment(
  ) public returns (int256)

Get the pending funding payment for a trader in a given market

this is the view version of _updateFundingGrowth()

Return Values:​

Name	Type	Description
pendingFundingPayment	int256	The pending funding payment of a trader in one market,

including liquidity & balance coefficients. Positive value means the trader pays funding, negative value means the trader receives funding.