# BalancerAdapter

### BalancerAdapter

#### balancerVault

```solidity
address balancerVault
```

#### constructor

```solidity
constructor(struct PoolInput[] pools, address _balancerVault) public
```

#### swapExactInput

```solidity
function swapExactInput(address recipient, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes data) external returns (uint256 amountOut)
```

swap with exact input

**Parameters**

| Name         | Type    | Description                            |
| ------------ | ------- | -------------------------------------- |
| recipient    | address | recipient of amountOut of tokenOut     |
| tokenIn      | address | address of a token to swap on dex      |
| tokenOut     | address | address of a token to receive from dex |
| amountIn     | uint256 | exact amount of tokenIn to swap        |
| minAmountOut | uint256 | minimal amount of tokenOut to receive  |
| data         | bytes   | data for AdapterCallback               |

#### swapExactOutput

```solidity
function swapExactOutput(address recipient, address tokenIn, address tokenOut, uint256 maxAmountIn, uint256 amountOut, bytes data) external returns (uint256 amountIn)
```

swap with exact output

**Parameters**

| Name        | Type    | Description                            |
| ----------- | ------- | -------------------------------------- |
| recipient   | address | recipient of amountOut of tokenOut     |
| tokenIn     | address | address of a token to swap on dex      |
| tokenOut    | address | address of a token to receive from dex |
| maxAmountIn | uint256 | maximal amount of tokenIn to swap      |
| amountOut   | uint256 | exact amount of tokenOut to receive    |
| data        | bytes   | data for AdapterCallback               |

### FundManagement

```solidity
struct FundManagement {
  address sender;
  bool fromInternalBalance;
  address payable recipient;
  bool toInternalBalance;
}
```

### SingleSwap

```solidity
struct SingleSwap {
  bytes32 poolId;
  enum SwapKind kind;
  contract IAsset assetIn;
  contract IAsset assetOut;
  uint256 amount;
  bytes userData;
}
```

### SwapKind

```solidity
enum SwapKind {
  GIVEN_IN,
  GIVEN_OUT
}
```

### IVault

#### swap

```solidity
function swap(struct SingleSwap singleSwap, struct FundManagement funds, uint256 limit, uint256 deadline) external payable returns (uint256)
```

### IAsset

### IBasePool

#### getPoolId

```solidity
function getPoolId() external view returns (bytes32)
```


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