> For the complete documentation index, see [llms.txt](https://docs.forgenie.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.forgenie.com/specification/diamond-foundry/facetregistry.md).

# FacetRegistry

[Git Source](https://github.com/Forgenie/diamond-foundry/blob/e69a7af04e0636b77b9dd15df62c58172ec045da/src/registry/FacetRegistry.sol)

**Inherits:** IFacetRegistry, FacetRegistryBase

## Functions

### addFacet

Registers a new facet.

```solidity
function addFacet(address facet, bytes4[] memory selectors) external;
```

**Parameters**

| Name        | Type       | Description                      |
| ----------- | ---------- | -------------------------------- |
| `facet`     | `address`  | Address of the facet to add.     |
| `selectors` | `bytes4[]` | Function selectors of the facet. |

### removeFacet

Removes a facet from the registry.

```solidity
function removeFacet(address facet) external;
```

**Parameters**

| Name    | Type      | Description                     |
| ------- | --------- | ------------------------------- |
| `facet` | `address` | Address of the facet to remove. |

### deployFacet

Deploys a new facet and registers it.

```solidity
function deployFacet(
    bytes32 salt,
    bytes memory creationCode,
    bytes4[] memory selectors
)
    external
    override
    returns (address facet);
```

**Parameters**

| Name           | Type       | Description                                       |
| -------------- | ---------- | ------------------------------------------------- |
| `salt`         | `bytes32`  | Salt used to create the address of the new facet. |
| `creationCode` | `bytes`    | Creation code of the new facet.                   |
| `selectors`    | `bytes4[]` | Function selectors of the new facet.              |

**Returns**

| Name    | Type      | Description               |
| ------- | --------- | ------------------------- |
| `facet` | `address` | Address of the new facet. |

### computeFacetAddress

Computes the address of a facet deployed with the given salt and creation code.

```solidity
function computeFacetAddress(bytes32 salt, bytes memory creationCode) external view override returns (address facet);
```

**Parameters**

| Name           | Type      | Description                                       |
| -------------- | --------- | ------------------------------------------------- |
| `salt`         | `bytes32` | Salt used to create the address of the new facet. |
| `creationCode` | `bytes`   | Creation code of the new facet.                   |

### facetSelectors

Returns the selectors of a registered facet.

```solidity
function facetSelectors(address facet) external view returns (bytes4[] memory);
```

**Parameters**

| Name    | Type      | Description               |
| ------- | --------- | ------------------------- |
| `facet` | `address` | The address of the facet. |

**Returns**

| Name     | Type       | Description                           |
| -------- | ---------- | ------------------------------------- |
| `<none>` | `bytes4[]` | selectors The selectors of the facet. |

### facetAddresses

Returns the addresses of all registered facets.

```solidity
function facetAddresses() external view returns (address[] memory);
```

**Returns**

| Name     | Type        | Description                                    |
| -------- | ----------- | ---------------------------------------------- |
| `<none>` | `address[]` | facets The addresses of all registered facets. |


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