UniswapV3Adapter

UniswapV3Adapter implements ISwapRouter on top of Uniswap V3 SwapRouter02. Its quote reads a pool TWAP (or spot when the pool lacks history) and is the slippage reference for Zap, PositionRouter, FeeCollector, and CreatorFeeRouter. It is never a collateral price. An owner sets the default fee tier, a per-pair fee, and the TWAP window, with two-step ownership transfer. UniswapV3Adapter lets you:

Quote a multi-hop swap against pool TWAPs
Execute an exact-input multi-hop swap
Read the fee tier used for any pair
Let the owner tune fee tiers and the TWAP window

This contract is not deployed on a listed network yet. Watch Addresses.

Network	Address
Robinhood Chain testnet	Not deployed

The source code is src/periphery/UniswapV3Adapter.sol on GitHub. The ABI is /abis/UniswapV3Adapter.json.

Write methods

setOwner

function setOwner(address owner_) external

Proposes a new owner. The new owner must call acceptOwner. Owner only. Reverts with ZeroAddress for the zero address.

Owner only.

Input parameters

Name	Type	Description
owner_	`address`	The proposed owner.

acceptOwner

function acceptOwner() external

Completes the ownership transfer. Only the pending owner can call it (NotOwner otherwise).

setDefaultFee

function setDefaultFee(uint24 fee) external

Sets the fee tier used when a pair has no specific fee. Owner only. Reverts with InvalidFee for 0.

Owner only.

Input parameters

Name	Type	Description
fee	`uint24`	Fee tier in hundredths of a bip.

setTwapWindow

function setTwapWindow(uint32 window) external

Sets the TWAP lookback used by quote. A window of 0 makes quote use spot. Owner only.

Owner only. A 0 window makes quotes easy to manipulate within a block.

Input parameters

Name	Type	Description
window	`uint32`	Seconds.

setPairFee

function setPairFee(
    address tokenA,
    address tokenB,
    uint24 fee
) external

Sets the fee tier for one pair. Owner only. Reverts with InvalidPath for zero or identical tokens and InvalidFee for 0.

Owner only.

Input parameters

Name	Type	Description
tokenA	`address`	One token.
tokenB	`address`	The other token.
fee	`uint24`	Fee tier in hundredths of a bip.

swapExactTokensForTokens

function swapExactTokensForTokens(
    uint256 amountIn,
    uint256 amountOutMin,
    address[] memory path,
    address to
) external nonReentrant returns (uint256 amountOut)

Pulls amountIn of the first path token from the caller and swaps it through SwapRouter02 to to. Reverts with the same path errors as quote, ZeroAddress for a zero recipient, and ZeroAmount if the output is 0. SwapRouter02 reverts if the output is below amountOutMin.

The caller must approve the adapter for amountIn of the input token.

Input parameters

Name	Type	Description
amountIn	`uint256`	Input amount.
amountOutMin	`uint256`	Minimum acceptable output.
path	`address[]`	Token addresses from input to output.
to	`address`	Recipient of the output.

Return values

Type	Description
`uint256`	amountOut: Output amount delivered.

Read methods

quote

function quote(
    uint256 amountIn,
    address[] memory path
) external view returns (uint256 amountOut)

Returns the expected output of swapping amountIn along path using each hop’s TWAP over twapWindow, or spot if the window is 0 or the pool cannot observe that far back. Reverts with InvalidPath for fewer than two hops or repeated tokens, ZeroAddress for a zero hop, ZeroAmount for a zero input or output, and NoPool if a hop has no pool at the configured fee. Input parameters

Name	Type	Description
amountIn	`uint256`	Input amount in the first token’s native units.
path	`address[]`	Token addresses from input to output.

Return values

Type	Description
`uint256`	amountOut: Expected output in the last token’s native units.

feeOf

function feeOf(address tokenA, address tokenB) public view returns (uint24 fee)

Returns the fee tier for a pair: the configured pair fee if set, else defaultFee. Order of the two tokens does not matter. Input parameters

Name	Type	Description
tokenA	`address`	One token.
tokenB	`address`	The other token.

Return values

Type	Description
`uint24`	fee: Fee tier in hundredths of a bip (for example 3000 = 0.3%).

Events

OwnerPending

event OwnerPending(address indexed owner)

Fires when a new owner is proposed.

OwnerSet

event OwnerSet(address indexed owner)

Fires when the pending owner accepts.

DefaultFeeSet

event DefaultFeeSet(uint24 fee)

Fires when the default fee tier changes.

TwapWindowSet

event TwapWindowSet(uint32 window)

Fires when the TWAP window changes.

PairFeeSet

event PairFeeSet(
    address indexed tokenA,
    address indexed tokenB,
    uint24 fee
)

Fires when a pair fee is set.

Errors

ZeroAddress

error ZeroAddress()

A constructor address, path hop, or recipient was zero.

NotOwner

error NotOwner()

The caller is not the owner (or not the pending owner for acceptOwner).

ZeroAmount

error ZeroAmount()

The input or output amount was zero.

InvalidPath

error InvalidPath()

The path has fewer than two hops, repeats a token, or a pair uses zero or identical tokens.

InvalidFee

error InvalidFee()

A fee tier was 0.

NoPool

error NoPool(
    address tokenA,
    address tokenB,
    uint24 fee
)

No Uniswap V3 pool exists for the pair at the configured fee.

Introduction

Using Stockline

Concepts

Developers

Ecosystem

Resources

Write methods

setOwner

acceptOwner

setDefaultFee

setTwapWindow

setPairFee

swapExactTokensForTokens

Read methods

quote

feeOf

Events

OwnerPending

OwnerSet

DefaultFeeSet

TwapWindowSet

PairFeeSet

Errors

ZeroAddress

NotOwner

ZeroAmount

InvalidPath

InvalidFee

NoPool

​Write methods

​setOwner

​acceptOwner

​setDefaultFee

​setTwapWindow

​setPairFee

​swapExactTokensForTokens

​Read methods

​quote

​feeOf

​Events

​OwnerPending

​OwnerSet

​DefaultFeeSet

​TwapWindowSet

​PairFeeSet

​Errors

​ZeroAddress

​NotOwner

​ZeroAmount

​InvalidPath

​InvalidFee

​NoPool

Write methods

setOwner

acceptOwner

setDefaultFee

setTwapWindow

setPairFee

swapExactTokensForTokens

Read methods

quote

feeOf

Events

OwnerPending

OwnerSet

DefaultFeeSet

TwapWindowSet

PairFeeSet

Errors

ZeroAddress

NotOwner

ZeroAmount

InvalidPath

InvalidFee

NoPool