> For the complete documentation index, see [llms.txt](https://weidex.gitbook.io/weidex-v2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://weidex.gitbook.io/weidex-v2/smart-contracts/exchangestorage.sol.md).

# ExchangeStorage.sol

## Functions

### getBalance()

Returns the balance of a token for a certain user.

```
function getBalance(address user, address token) public view returns (uint256)
```

| parameter | type    |
| --------- | ------- |
| user      | address |
| token     | address |

### getBalances()

Returns the balance of multiple tokens for a certain user.

```
function getBalances(address user, address[] memory token) public view
returns(uint256[] memory balanceArray)
```

| parameter    | type               |
| ------------ | ------------------ |
| user         | address            |
| token        | array of addresses |
| balanceArray | array of uint256   |

### getFill()

Returns the filled amount of order  specified by 'orderHash'.

```
function getFill(bytes32 orderHash) public view returns (uint256)
```

| parameter | type    |
| --------- | ------- |
| orderHash | bytes32 |

### getFills()

Returns the filled amount of multiple orders specified by the 'orderHash' array.

```
function getFills(bytes32[] memory orderHash) public view
returns (uint256[] memory filledArray)
```

| parameter   | type             |
| ----------- | ---------------- |
| orderHash   | array of bytes32 |
| filledArray | array of uint256 |

### getCancel()

Returns true or false depending on if 'orderHash' is or is not canceled.

```
function getCancel(bytes32 orderHash) public view returns (bool)
```

| parameter | type             |
| --------- | ---------------- |
| orderHash | array of bytes32 |

### getCancels()

Returns array of true or false depending on if orders specified by 'orderHash' array are or are not canceled.

```
function getCancels(bytes32[] memory orderHash) public view
returns (bool[]memory cancelledArray)
```

| parameters     | type             |
| -------------- | ---------------- |
| orderHash      | array of bytes32 |
| cancelledArray | array of bools   |

### getReferral()

Returns the referrer address of the specified user.

```
function getReferral(address user) public view returns (address)
```

| parameters | type    |
| ---------- | ------- |
| user       | address |

### setMakerFeeRate()

Sets new rate for the received maker fee.

```
function setMakerFeeRate(uint256 newMakerFeeRate) external onlyOwner
```

| parameter       | type    |
| --------------- | ------- |
| newMakerFeeRate | uint256 |

### setTakerFeeRate()

Sets new rate for the paid taker fee.

```
function setTakerFeeRate(uint256 newTakerFeeRate) external onlyOwner
```

| parameter       | type    |
| --------------- | ------- |
| newTakerFeeRate | uint256 |

### setFeeAccount()

Sets new fee account.

```
 function setFeeAccount(address newFeeAccount) external onlyOwner
```

| parameter     | type    |
| ------------- | ------- |
| newFeeAccount | address |