IV2SwapRouter

Functions for swapping tokens via Dragonswap V2

Functions

exactInputSingle

Swaps amountIn of one token for as much as possible of another token

Setting amountIn to 0 will cause the contract to look up its own balance, and swap the entire amount, enabling contracts to send tokens before calling this function.

function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

Parameters

Name	Type	Description
params	ExactInputSingleParams	The parameters necessary for the swap, encoded as ExactInputSingleParams in calldata

Returns

Name	Type	Description
amountOut	uint256	The amount of the received token

exactInput

Swaps amountIn of one token for as much as possible of another along the specified path

Setting amountIn to 0 will cause the contract to look up its own balance, and swap the entire amount, enabling contracts to send tokens before calling this function.

function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

Parameters

Name	Type	Description
params	ExactInputParams	The parameters necessary for the multi-hop swap, encoded as ExactInputParams in calldata

Returns

Name	Type	Description
amountOut	uint256	The amount of the received token

exactOutputSingle

Swaps as little as possible of one token for amountOut of another token that may remain in the router after the swap.

function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

Parameters

Name	Type	Description
params	ExactOutputSingleParams	The parameters necessary for the swap, encoded as ExactOutputSingleParams in calldata

Returns

Name	Type	Description
amountIn	uint256	The amount of the input token

exactOutput

Swaps as little as possible of one token for amountOut of another along the specified path (reversed) that may remain in the router after the swap.

function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);

Parameters

Name	Type	Description
params	ExactOutputParams	The parameters necessary for the multi-hop swap, encoded as ExactOutputParams in calldata

Returns

Name	Type	Description
amountIn	uint256	The amount of the input token

Structs

ExactInputSingleParams

struct ExactInputSingleParams {
    address tokenIn;
    address tokenOut;
    uint24 fee;
    address recipient;
    uint256 amountIn;
    uint256 amountOutMinimum;
    uint160 sqrtPriceLimitX96;
}

ExactInputParams

struct ExactInputParams {
    bytes path;
    address recipient;
    uint256 amountIn;
    uint256 amountOutMinimum;
}

ExactOutputSingleParams

struct ExactOutputSingleParams {
    address tokenIn;
    address tokenOut;
    uint24 fee;
    address recipient;
    uint256 amountOut;
    uint256 amountInMaximum;
    uint160 sqrtPriceLimitX96;
}

ExactOutputParams

struct ExactOutputParams {
    bytes path;
    address recipient;
    uint256 amountOut;
    uint256 amountInMaximum;
}