Enum AsyncMessage 

pub enum AsyncMessage {
    LspDiagnostics {
        uri: String,
        diagnostics: Vec<Diagnostic>,
        server_name: String,
    },
    LspInitialized {
        language: String,
        server_name: String,
        capabilities: ServerCapabilitySummary,
    },
    LspError {
        language: String,
        error: String,
        stderr_log_path: Option<PathBuf>,
    },
    LspCompletion {
        request_id: u64,
        items: Vec<CompletionItem>,
    },
    LspGotoDefinition {
        request_id: u64,
        locations: Vec<Location>,
    },
    LspRename {
        request_id: u64,
        result: Result<WorkspaceEdit, String>,
    },
    LspHover {
        request_id: u64,
        contents: String,
        is_markdown: bool,
        range: Option<((u32, u32), (u32, u32))>,
    },
    LspReferences {
        request_id: u64,
        locations: Vec<Location>,
    },
    LspSignatureHelp {
        request_id: u64,
        signature_help: Option<SignatureHelp>,
    },
    LspCodeActions {
        request_id: u64,
        actions: Vec<CodeActionOrCommand>,
    },
    LspCompletionResolved {
        request_id: u64,
        item: Result<CompletionItem, String>,
    },
    LspFormatting {
        request_id: u64,
        uri: String,
        edits: Vec<TextEdit>,
    },
    LspPrepareRename {
        request_id: u64,
        result: Result<Value, String>,
    },
    LspPulledDiagnostics {
        request_id: u64,
        uri: String,
        result_id: Option<String>,
        diagnostics: Vec<Diagnostic>,
        unchanged: bool,
    },
    LspInlayHints {
        request_id: u64,
        uri: String,
        hints: Vec<InlayHint>,
    },
    LspFoldingRanges {
        request_id: u64,
        uri: String,
        ranges: Vec<FoldingRange>,
    },
    LspSemanticTokens {
        request_id: u64,
        uri: String,
        response: LspSemanticTokensResponse,
    },
    LspServerQuiescent {
        language: String,
    },
    LspDiagnosticRefresh {
        language: String,
    },
    FileChanged {
        path: String,
    },
    GitStatusChanged {
        status: String,
    },
    FileExplorerInitialized(FileTreeView),
    FileExplorerToggleNode(NodeId),
    FileExplorerRefreshNode(NodeId),
    FileExplorerExpandedToPath(FileTreeView),
    Plugin(PluginAsyncMessage),
    FileOpenDirectoryLoaded(Result<Vec<DirEntry>>),
    FileOpenShortcutsLoaded(Vec<NavigationShortcut>),
    TerminalOutput {
        terminal_id: TerminalId,
    },
    TerminalExited {
        terminal_id: TerminalId,
    },
    LspProgress {
        language: String,
        token: String,
        value: LspProgressValue,
    },
    LspWindowMessage {
        language: String,
        message_type: LspMessageType,
        message: String,
    },
    LspLogMessage {
        language: String,
        message_type: LspMessageType,
        message: String,
    },
    LspApplyEdit {
        edit: WorkspaceEdit,
        label: Option<String>,
    },
    LspCodeActionResolved {
        request_id: u64,
        action: Result<CodeAction, String>,
    },
    LspServerRequest {
        language: String,
        server_command: String,
        method: String,
        params: Option<Value>,
    },
    PluginLspResponse {
        language: String,
        request_id: u64,
        result: Result<Value, String>,
    },
    PluginProcessOutput {
        process_id: u64,
        stdout: String,
        stderr: String,
        exit_code: i32,
    },
    LspStatusUpdate {
        language: String,
        server_name: String,
        status: LspServerStatus,
        message: Option<String>,
    },
    GrammarRegistryBuilt {
        registry: Arc<GrammarRegistry>,
        callback_ids: Vec<JsCallbackId>,
    },
}

Messages sent from async tasks to the synchronous main loop

Variants

LspDiagnostics

LSP diagnostics received for a file

Fields

uri: String

diagnostics: Vec<Diagnostic>

server_name: String

Name of the server that sent these diagnostics (for per-server tracking)

LspInitialized

LSP server initialized successfully

Fields

language: String

server_name: String

Name of the specific server (for per-server capability tracking)

capabilities: ServerCapabilitySummary

Capabilities reported by this server

LspError

LSP server crashed or failed

Fields

language: String

error: String

stderr_log_path: Option<PathBuf>

Path to the stderr log file for this LSP session

LspCompletion

LSP completion response

Fields

request_id: u64

items: Vec<CompletionItem>

LspGotoDefinition

LSP go-to-definition response

Fields

request_id: u64

locations: Vec<Location>

LspRename

LSP rename response

Fields

request_id: u64

result: Result<WorkspaceEdit, String>

LspHover

LSP hover response

Fields

request_id: u64

contents: String

Hover contents as a single string (joined if multiple parts)

is_markdown: bool

Whether the content is markdown (true) or plaintext (false)

range: Option<((u32, u32), (u32, u32))>

Optional range of the symbol that was hovered over (LSP line/character positions) Used to highlight the hovered symbol

LspReferences

LSP find references response

Fields

request_id: u64

locations: Vec<Location>

LspSignatureHelp

LSP signature help response

Fields

request_id: u64

signature_help: Option<SignatureHelp>

LspCodeActions

LSP code actions response

Fields

request_id: u64

actions: Vec<CodeActionOrCommand>

LspCompletionResolved

LSP completionItem/resolve response

Fields

request_id: u64

item: Result<CompletionItem, String>

LspFormatting

LSP textDocument/formatting response

Fields

request_id: u64

uri: String

edits: Vec<TextEdit>

LspPrepareRename

LSP textDocument/prepareRename response

Fields

request_id: u64

result: Result<Value, String>

LspPulledDiagnostics

LSP pulled diagnostics response (textDocument/diagnostic)

Fields

request_id: u64

uri: String

result_id: Option<String>

New result_id for incremental updates (None if server doesn’t support)

diagnostics: Vec<Diagnostic>

Diagnostics (empty if unchanged)

unchanged: bool

True if diagnostics haven’t changed since previous_result_id

LspInlayHints

LSP inlay hints response (textDocument/inlayHint)

Fields

request_id: u64

uri: String

hints: Vec<InlayHint>

Inlay hints for the requested range

LspFoldingRanges

LSP folding ranges response (textDocument/foldingRange)

Fields

request_id: u64

uri: String

ranges: Vec<FoldingRange>

LspSemanticTokens

LSP semantic tokens response (full, full/delta, or range)

Fields

request_id: u64

uri: String

response: LspSemanticTokensResponse

LspServerQuiescent

LSP server status became quiescent (project fully loaded) This is a rust-analyzer specific notification (experimental/serverStatus)

Fields

language: String

LspDiagnosticRefresh

LSP server requests diagnostic refresh (workspace/diagnostic/refresh) Client should re-pull diagnostics for all open documents

Fields

language: String

FileChanged

File changed externally (future: file watching)

Fields

path: String

GitStatusChanged

Git status updated (future: git integration)

Fields

status: String

FileExplorerInitialized(FileTreeView)

File explorer initialized with tree view

FileExplorerToggleNode(NodeId)

File explorer node toggle completed

FileExplorerRefreshNode(NodeId)

File explorer node refresh completed

FileExplorerExpandedToPath(FileTreeView)

File explorer expand to path completed Contains the updated FileTreeView with the path expanded and selected

Plugin(PluginAsyncMessage)

Plugin-related async messages

FileOpenDirectoryLoaded(Result<Vec<DirEntry>>)

File open dialog: directory listing completed

FileOpenShortcutsLoaded(Vec<NavigationShortcut>)

File open dialog: async shortcuts (Windows drive letters) loaded

TerminalOutput

Terminal output received (triggers redraw)

Fields

terminal_id: TerminalId

TerminalExited

Terminal process exited

Fields

terminal_id: TerminalId

LspProgress

LSP progress notification ($/progress)

Fields

language: String

token: String

value: LspProgressValue

LspWindowMessage

LSP window message (window/showMessage)

Fields

language: String

message_type: LspMessageType

message: String

LspLogMessage

LSP log message (window/logMessage)

Fields

language: String

message_type: LspMessageType

message: String

LspApplyEdit

LSP workspace/applyEdit (server -> client request) Server asks client to apply a workspace edit (during executeCommand, etc.)

Fields

edit: WorkspaceEdit

label: Option<String>

LspCodeActionResolved

LSP codeAction/resolve response

Fields

request_id: u64

action: Result<CodeAction, String>

LspServerRequest

LSP server request (server -> client) Used for custom/extension methods that plugins can handle

Fields

language: String

server_command: String

method: String

params: Option<Value>

PluginLspResponse

Response for a plugin-initiated LSP request

Fields

language: String

request_id: u64

result: Result<Value, String>

PluginProcessOutput

Plugin process completed with output

Fields

process_id: u64

Unique ID for this process (to match with callback)

stdout: String

Standard output

stderr: String

Standard error

exit_code: i32

Exit code

LspStatusUpdate

LSP server status update (progress, messages, etc.)

Fields

language: String

server_name: String

Name of the specific server (for multi-server status tracking)

status: LspServerStatus

message: Option<String>

GrammarRegistryBuilt

Background grammar build completed — swap in the new registry. callback_ids contains plugin callbacks to resolve (empty for the initial startup build).

Fields

registry: Arc<GrammarRegistry>

callback_ids: Vec<JsCallbackId>

Trait Implementations

impl Debug for AsyncMessage

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

Formats the value using the given formatter.