# NonfungibleTokenPositionDescriptor

Describes NFT token positions

Produces a string containing the data URI for a JSON metadata string

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

## Variables

### address WNativeToken immutable

## Functions

### constructor

`constructor(address _WNativeToken) public` public

| Name           | Type    | Description |
| -------------- | ------- | ----------- |
| \_WNativeToken | address |             |

### tokenURI

`function tokenURI(contract INonfungiblePositionManager positionManager, uint256 tokenId) external view returns (string)` view external

Produces the URI describing a particular token ID for a position manager *Developer note: Note this URI may be a data: URI with the JSON contents directly inlined*

| Name            | Type                                 | Description                                                                    |
| --------------- | ------------------------------------ | ------------------------------------------------------------------------------ |
| positionManager | contract INonfungiblePositionManager | The position manager for which to describe the token                           |
| tokenId         | uint256                              | The ID of the token for which to produce a description, which may not be valid |

**Returns:**

| Name | Type   | Description                              |
| ---- | ------ | ---------------------------------------- |
| \[0] | string | The URI of the ERC721-compliant metadata |

### flipRatio

`function flipRatio(address token0, address token1, uint256 chainId) public view returns (bool)` view public

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| token0  | address |             |
| token1  | address |             |
| chainId | uint256 |             |

**Returns:**

| Name | Type | Description |
| ---- | ---- | ----------- |
| \[0] | bool |             |

### tokenRatioPriority

`function tokenRatioPriority(address token, uint256 chainId) public view returns (int256)` view public

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| token   | address |             |
| chainId | uint256 |             |

**Returns:**

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \[0] | int256 |             |