NonfungiblePositionManager

NFT positions

Wraps Algebra positions in the ERC721 non-fungible token interface

Developer note: Credit to Uniswap Labs under GPL-2.0-or-later license: https://github.com/Uniswap/v3-periphery

Modifiers

isAuthorizedForToken

modifier isAuthorizedForToken(uint256 tokenId) internal

Name	Type	Description
tokenId	uint256

Functions

constructor

constructor(address _factory, address _WNativeToken, address _tokenDescriptor_, address _poolDeployer) public public

Name	Type	Description
_factory	address
_WNativeToken	address
tokenDescriptor	address
_poolDeployer	address

positions

function positions(uint256 tokenId) external view returns (uint96 nonce, address operator, address token0, address token1, int24 tickLower, int24 tickUpper, uint128 liquidity, uint256 feeGrowthInside0LastX128, uint256 feeGrowthInside1LastX128, uint128 tokensOwed0, uint128 tokensOwed1) view external

Returns the position information associated with a given token ID. Developer note: Throws if the token ID is not valid.

Name	Type	Description
tokenId	uint256	The ID of the token that represents the position

Returns:

Name	Type	Description
nonce	uint96	The nonce for permits
operator	address	The address that is approved for spending
token0	address	The address of the token0 for a specific pool
token1	address	The address of the token1 for a specific pool
tickLower	int24	The lower end of the tick range for the position
tickUpper	int24	The higher end of the tick range for the position
liquidity	uint128	The liquidity of the position
feeGrowthInside0LastX128	uint256	The fee growth of token0 as of the last action on the individual position
feeGrowthInside1LastX128	uint256	The fee growth of token1 as of the last action on the individual position
tokensOwed0	uint128	The uncollected amount of token0 owed to the position as of the last computation
tokensOwed1	uint128	The uncollected amount of token1 owed to the position as of the last computation

mint

function mint(struct INonfungiblePositionManager.MintParams params) external payable returns (uint256 tokenId, uint128 liquidity, uint256 amount0, uint256 amount1) payable external

Creates a new position wrapped in a NFT Developer note: Call this when the pool does exist and is initialized. Note that if the pool is created but not initialized a method does not exist, i.e. the pool is assumed to be initialized.

Name	Type	Description
params	struct INonfungiblePositionManager.MintParams	The params necessary to mint a position, encoded as `MintParams` in calldata

Returns:

Name	Type	Description
tokenId	uint256	The ID of the token that represents the minted position
liquidity	uint128	The amount of liquidity for this position
amount0	uint256	The amount of token0
amount1	uint256	The amount of token1

tokenURI

function tokenURI(uint256 tokenId) public view returns (string) view public

Name	Type	Description
tokenId	uint256

Returns:

Name	Type	Description
[0]	string

baseURI

function baseURI() public pure returns (string) pure public

Developer note: Returns the base URI set via {_setBaseURI}. This will be automatically added as a prefix in {tokenURI} to each token's URI, or to the token ID if no specific URI is set for that token ID.

Returns:

Name	Type	Description
[0]	string

increaseLiquidity

function increaseLiquidity(struct INonfungiblePositionManager.IncreaseLiquidityParams params) external payable returns (uint128 liquidity, uint256 amount0, uint256 amount1) payable external

Increases the amount of liquidity in a position, with tokens paid by the `msg.sender`

Name	Type	Description
params	struct INonfungiblePositionManager.IncreaseLiquidityParams	tokenId The ID of the token for which liquidity is being increased,
amount0Desired The desired amount of token0 to be spent,
amount1Desired The desired amount of token1 to be spent,
amount0Min The minimum amount of token0 to spend, which serves as a slippage check,
amount1Min The minimum amount of token1 to spend, which serves as a slippage check,
deadline The time by which the transaction must be included to effect the change

Returns:

Name	Type	Description
liquidity	uint128	The new liquidity amount as a result of the increase
amount0	uint256	The amount of token0 to achieve resulting liquidity
amount1	uint256	The amount of token1 to achieve resulting liquidity

decreaseLiquidity

function decreaseLiquidity(struct INonfungiblePositionManager.DecreaseLiquidityParams params) external payable returns (uint256 amount0, uint256 amount1) payable external

Decreases the amount of liquidity in a position and accounts it to the position

Name	Type	Description
params	struct INonfungiblePositionManager.DecreaseLiquidityParams	tokenId The ID of the token for which liquidity is being decreased,
amount The amount by which liquidity will be decreased,
amount0Min The minimum amount of token0 that should be accounted for the burned liquidity,
amount1Min The minimum amount of token1 that should be accounted for the burned liquidity,
deadline The time by which the transaction must be included to effect the change

Returns:

Name	Type	Description
amount0	uint256	The amount of token0 accounted to the position's tokens owed
amount1	uint256	The amount of token1 accounted to the position's tokens owed

collect

function collect(struct INonfungiblePositionManager.CollectParams params) external payable returns (uint256 amount0, uint256 amount1) payable external

Collects up to a maximum amount of fees owed to a specific position to the recipient

Name	Type	Description
params	struct INonfungiblePositionManager.CollectParams	tokenId The ID of the NFT for which tokens are being collected,
recipient The account that should receive the tokens,
amount0Max The maximum amount of token0 to collect,
amount1Max The maximum amount of token1 to collect

Returns:

Name	Type	Description
amount0	uint256	The amount of fees collected in token0
amount1	uint256	The amount of fees collected in token1

burn

function burn(uint256 tokenId) external payable payable external

Burns a token ID, which deletes it from the NFT contract. The token must have 0 liquidity and all tokens must be collected first.

Name	Type	Description
tokenId	uint256	The ID of the token that is being burned

getApproved

function getApproved(uint256 tokenId) public view returns (address) view public

*Developer note: Returns the account approved for `tokenId` token.

Requirements:

• `tokenId` must exist.*

Name	Type	Description
tokenId	uint256

Returns:

Name	Type	Description
[0]	address