IQuoter

Quoter Interface

Supports quoting the calculated amounts from exact input or exact output swaps

Developer note: These functions are not marked view because they rely on calling non-view functions and reverting to compute the result. They are also not gas efficient and should not be called on-chain. Credit to Uniswap Labs under GPL-2.0-or-later license: https://github.com/Uniswap/v3-periphery

Functions

quoteExactInput

function quoteExactInput(bytes path, uint256 amountIn) external returns (uint256 amountOut, uint16[] fees) external

Returns the amount out received for a given exact input swap without executing the swap

Name	Type	Description
path	bytes	The path of the swap, i.e. each token pair
amountIn	uint256	The amount of the first token to swap

Returns:

Name	Type	Description
amountOut	uint256	The amount of the last token that would be received
fees	uint16[]

quoteExactInputSingle

function quoteExactInputSingle(address tokenIn, address tokenOut, uint256 amountIn, uint160 limitSqrtPrice) external returns (uint256 amountOut, uint16 fee) external

Returns the amount out received for a given exact input but for a swap of a single pool

Name	Type	Description
tokenIn	address	The token being swapped in
tokenOut	address	The token being swapped out
amountIn	uint256	The desired input amount
limitSqrtPrice	uint160	The price limit of the pool that cannot be exceeded by the swap

Returns:

Name	Type	Description
amountOut	uint256	The amount of `tokenOut` that would be received
fee	uint16

quoteExactOutput

function quoteExactOutput(bytes path, uint256 amountOut) external returns (uint256 amountIn, uint16[] fees) external

Returns the amount in required for a given exact output swap without executing the swap

Name	Type	Description
path	bytes	The path of the swap, i.e. each token pair. Path must be provided in reverse order
amountOut	uint256	The amount of the last token to receive

Returns:

Name	Type	Description
amountIn	uint256	The amount of first token required to be paid
fees	uint16[]

quoteExactOutputSingle

function quoteExactOutputSingle(address tokenIn, address tokenOut, uint256 amountOut, uint160 limitSqrtPrice) external returns (uint256 amountIn, uint16 fee) external

Returns the amount in required to receive the given exact output amount but for a swap of a single pool

Name	Type	Description
tokenIn	address	The token being swapped in
tokenOut	address	The token being swapped out
amountOut	uint256	The desired output amount
limitSqrtPrice	uint160	The price limit of the pool that cannot be exceeded by the swap

Returns:

Name	Type	Description
amountIn	uint256	The amount required as the input for the swap in order to receive `amountOut`
fee	uint16