# PancakeV3Factory

## Contract info

**Contract name:** PancakeFactory

[Contract address](/russkii/developers/smart-contracts/payswap-exchange/v3-contracts.md#address)

## Solidity API

### PancakeV3Factory

Deploys PancakeSwap V3 pools and manages ownership and control over pool protocol fees

#### owner

```solidity
address owner
```

Returns the current owner of the factory

*Can be changed by the current owner via setOwner*

**Return Values**

#### poolDeployer

```solidity
address poolDeployer
```

Returns the current pool deployer

#### feeAmountTickSpacing

```solidity
mapping(uint24 => int24) feeAmountTickSpacing
```

Returns the tick spacing for a given fee amount, if enabled, or 0 if not enabled

*A fee amount can never be removed, so this value should be hard coded or cached in the calling context*

**Parameters**

**Return Values**

#### getPool

```solidity
mapping(address => mapping(address => mapping(uint24 => address))) getPool
```

Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist

*tokenA and tokenB may be passed in either token0/token1 or token1/token0 order*

**Parameters**

**Return Values**

#### feeAmountTickSpacingExtraInfo

```solidity
mapping(uint24 => struct IPancakeV3Factory.TickSpacingExtraInfo) feeAmountTickSpacingExtraInfo
```

Returns the tick spacing extra info

*A fee amount can never be removed, so this value should be hard coded or cached in the calling context*

**Parameters**

**Return Values**

#### constructor

```solidity
constructor(address _poolDeployer) public
```

#### createPool

```solidity
function createPool(address tokenA, address tokenB, uint24 fee) external returns (address pool)
```

Creates a pool for the given two tokens and fee

*tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. tickSpacing is retrieved from the fee. The call will revert if the pool already exists, the fee is invalid, or the token arguments are invalid.*

**Parameters**

| Name   | Type    | Description                                     |
| ------ | ------- | ----------------------------------------------- |
| tokenA | address | One of the two tokens in the desired pool       |
| tokenB | address | The other of the two tokens in the desired pool |
| fee    | uint24  | The desired fee for the pool                    |

**Return Values**

| Name | Type    | Description                           |
| ---- | ------- | ------------------------------------- |
| pool | address | The address of the newly created pool |

#### setOwner

```solidity
function setOwner(address _owner) external
```

Updates the owner of the factory

*Must be called by the current owner*

**Parameters**

| Name    | Type    | Description                  |
| ------- | ------- | ---------------------------- |
| \_owner | address | The new owner of the factory |

#### enableFeeAmount

```solidity
function enableFeeAmount(uint24 fee, int24 tickSpacing) public
```

Enables a fee amount with the given tickSpacing

*Fee amounts may never be removed once enabled*

**Parameters**

| Name        | Type   | Description                                                                              |
| ----------- | ------ | ---------------------------------------------------------------------------------------- |
| fee         | uint24 | The fee amount to enable, denominated in hundredths of a bip (i.e. 1e-6)                 |
| tickSpacing | int24  | The spacing between ticks to be enforced for all pools created with the given fee amount |

#### setWhiteListAddress

```solidity
function setWhiteListAddress(address user, bool verified) public
```

Set an address into white list

*Address can be updated by owner with boolean value false*

**Parameters**

| Name     | Type    | Description                               |
| -------- | ------- | ----------------------------------------- |
| user     | address | The user address that add into white list |
| verified | bool    |                                           |

#### setFeeAmountExtraInfo

```solidity
function setFeeAmountExtraInfo(uint24 fee, bool whitelistRequested, bool enabled) public
```

Set a fee amount extra info

*Fee amounts can be updated by owner with extra info*

**Parameters**

| Name               | Type   | Description                                      |
| ------------------ | ------ | ------------------------------------------------ |
| fee                | uint24 |                                                  |
| whitelistRequested | bool   | The flag whether should be created by owner only |
| enabled            | bool   | The flag is the fee is enabled or not            |


---

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