Struct tower_lsp::Client

pub struct Client { /* private fields */ }

Handle for communicating with the language client.

This type provides a very cheap implementation of Clone so API consumers can cheaply clone and pass it around as needed.

It also implements tower::Service in order to remain independent from the underlying transport and to facilitate further abstraction with middleware.

Implementations

impl Client

pub async fn register_capability( &self, registrations: Vec<Registration>, ) -> Result<()>

Registers a new capability with the client.

This corresponds to the client/registerCapability request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

pub async fn unregister_capability( &self, unregisterations: Vec<Unregistration>, ) -> Result<()>

Unregisters a capability with the client.

This corresponds to the client/unregisterCapability request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

pub async fn show_message<M: Display>(&self, typ: MessageType, message: M)

Notifies the client to display a particular message in the user interface.

This corresponds to the window/showMessage notification.

pub async fn show_message_request<M: Display>( &self, typ: MessageType, message: M, actions: Option<Vec<MessageActionItem>>, ) -> Result<Option<MessageActionItem>>

Requests the client to display a particular message in the user interface.

Unlike the show_message notification, this request can also pass a list of actions and wait for an answer from the client.

This corresponds to the window/showMessageRequest request.

pub async fn log_message<M: Display>(&self, typ: MessageType, message: M)

Notifies the client to log a particular message.

This corresponds to the window/logMessage notification.

pub async fn show_document(&self, params: ShowDocumentParams) -> Result<bool>

Asks the client to display a particular resource referenced by a URI in the user interface.

Returns Ok(true) if the document was successfully shown, or Ok(false) otherwise.

This corresponds to the window/showDocument request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.16.0.

pub async fn telemetry_event<S: Serialize>(&self, data: S)

Notifies the client to log a telemetry event.

This corresponds to the telemetry/event notification.

pub async fn code_lens_refresh(&self) -> Result<()>

Asks the client to refresh the code lenses currently shown in editors. As a result, the client should ask the server to recompute the code lenses for these editors.

This is useful if a server detects a configuration change which requires a re-calculation of all code lenses.

Note that the client still has the freedom to delay the re-calculation of the code lenses if for example an editor is currently not visible.

This corresponds to the workspace/codeLens/refresh request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.16.0.

pub async fn semantic_tokens_refresh(&self) -> Result<()>

Asks the client to refresh the editors for which this server provides semantic tokens. As a result, the client should ask the server to recompute the semantic tokens for these editors.

This is useful if a server detects a project-wide configuration change which requires a re-calculation of all semantic tokens. Note that the client still has the freedom to delay the re-calculation of the semantic tokens if for example an editor is currently not visible.

This corresponds to the workspace/semanticTokens/refresh request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.16.0.

pub async fn inline_value_refresh(&self) -> Result<()>

Asks the client to refresh the inline values currently shown in editors. As a result, the client should ask the server to recompute the inline values for these editors.

This is useful if a server detects a configuration change which requires a re-calculation of all inline values. Note that the client still has the freedom to delay the re-calculation of the inline values if for example an editor is currently not visible.

This corresponds to the workspace/inlineValue/refresh request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.17.0.

pub async fn inlay_hint_refresh(&self) -> Result<()>

Asks the client to refresh the inlay hints currently shown in editors. As a result, the client should ask the server to recompute the inlay hints for these editors.

This is useful if a server detects a configuration change which requires a re-calculation of all inlay hints. Note that the client still has the freedom to delay the re-calculation of the inlay hints if for example an editor is currently not visible.

This corresponds to the workspace/inlayHint/refresh request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.17.0.

pub async fn workspace_diagnostic_refresh(&self) -> Result<()>

Asks the client to refresh all needed document and workspace diagnostics.

This is useful if a server detects a project wide configuration change which requires a re-calculation of all diagnostics.

This corresponds to the workspace/diagnostic/refresh request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.17.0.

pub async fn publish_diagnostics( &self, uri: Url, diags: Vec<Diagnostic>, version: Option<i32>, )

Submits validation diagnostics for an open file with the given URI.

This corresponds to the textDocument/publishDiagnostics notification.

Initialization

This notification will only be sent if the server is initialized.

pub async fn configuration( &self, items: Vec<ConfigurationItem>, ) -> Result<Vec<Value>>

Fetches configuration settings from the client.

The request can fetch several configuration settings in one roundtrip. The order of the returned configuration settings correspond to the order of the passed ConfigurationItems (e.g. the first item in the response is the result for the first configuration item in the params).

This corresponds to the workspace/configuration request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.6.0.

pub async fn workspace_folders(&self) -> Result<Option<Vec<WorkspaceFolder>>>

Fetches the current open list of workspace folders.

Returns None if only a single file is open in the tool. Returns an empty Vec if a workspace is open but no folders are configured.

This corresponds to the workspace/workspaceFolders request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

Compatibility

This request was introduced in specification version 3.6.0.

pub async fn apply_edit( &self, edit: WorkspaceEdit, ) -> Result<ApplyWorkspaceEditResponse>

Requests a workspace resource be edited on the client side and returns whether the edit was applied.

This corresponds to the workspace/applyEdit request.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

pub async fn send_notification<N>(&self, params: N::Params)

where N: Notification,

Sends a custom notification to the client.

Initialization

This notification will only be sent if the server is initialized.

pub async fn send_request<R>(&self, params: R::Params) -> Result<R::Result>

where R: Request,

Sends a custom request to the client.

Initialization

If the request is sent to the client before the server has been initialized, this will immediately return Err with JSON-RPC error code -32002 (read more).

impl Client

pub fn next_request_id(&self) -> Id

Increments the internal request ID counter and returns the previous value.

This method can be used to build custom Request objects with numeric IDs that are guaranteed to be unique every time.

Trait Implementations

impl Clone for Client

fn clone(&self) -> Client

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Client

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Service<Request> for Client

type Response = Option<Response>

Responses given by the service.

type Error = ExitedError

Errors produced by the service.

type Future = Pin<Box<dyn Future<Output = Result<<Client as Service<Request>>::Response, <Client as Service<Request>>::Error>> + Send>>

The future response value.

fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>

Returns Poll::Ready(Ok(())) when the service is able to process requests.

fn call(&mut self, req: Request) -> Self::Future

Process the request and return the response asynchronously.