## Configuration in `initializationOptions`

The `initializationOptions` field of the `InitializeParams` of the initialization request should contain the `"rust-analyzer"` section of the configuration.

## Snippet `TextEdit`

**Experimental Client Capability:** `{ "snippetTextEdit": boolean }`

## `CodeAction` Groups

**Experimental Client Capability:** `{ "codeActionGroup": boolean }`

## Parent Module

**Experimental Server Capability:** `{ "parentModule": boolean }`

## Join Lines

**Experimental Server Capability:** `{ "joinLines": boolean }`

## On Enter

**Experimental Server Capability:** `{ "onEnter": boolean }`

## Matching Brace

**Experimental Server Capability:** `{ "matchingBrace": boolean }`

## Runnables

**Experimental Server Capability:** `{ "runnables": { "kinds": string[] } }`

// A human readable name for this test

label: string;

// The kind of this test item. Based on the kind,

kind: "package" | "module" | "test";

// True if this test may have children not available eagerly

canResolveChildren: boolean;

// like debugging, this field is useful.

// Note that this field includes some information about label and location as well, but

// those exist just for keeping things in sync with other methods of running runnables

// other than running tests this field should not be used.

runnable?: Runnable | undefined;

};

interface DiscoverTestResults {

// The discovered tests.

tests: TestItem[];

// contains all tests that are children of this test, and

// client should remove old tests not included in the response.

scope: string[] | undefined;

// contains all tests that are located in this file, and

// client should remove old tests not included in the response.

scopeFile: lc.TextDocumentIdentifier[] | undefined;

**Notification:** `DiscoverTestResults`

This notification is sent from the server to the client when the

the same as the one in `experimental/discoverTest` response.

**Method:** `experimental/runTest`

This notification is sent from the client to the server when the user is no longer

interested in the test results. The server should clean up its resources and send

**Method:** `experimental/changeTestState`

```

This notification is sent from server to client.

Note that this functionality is intended primarily to inform the end user about the state of the server.

In particular, it's valid for the client to completely ignore this extension.

## Open Cargo.toml

**Experimental Server Capability:** `{ "openCargoToml": boolean }`

## Hover Range

**Experimental Server Capability:** { "hoverRange": boolean }

## Move Item

This request is sent from client to server to move item under cursor or selection in some direction.

## Workspace Symbols Filtering

**Experimental Server Capability:** `{ "workspaceSymbolScopeKindFiltering": boolean }`

## Client Commands

**Experimental Client Capability:** `{ "commands?": ClientCommandOptions }`

size: number;

/// Alignment of the type in bytes

alignment: number;

offset: number;

parent_idx: number;

/// Index of the node's children (or -1 if it does not have children)

children_start: number;

children_len: number;

};