mirror of
https://github.com/apple/sourcekit-lsp.git
synced 2026-03-02 18:23:24 +01:00
8b57352f3b
* Send `didSave` notifications to clangd if it supports it - Minor update to the LSP protocol for `didSave` and `colorProvider` to be more in line with the spec - Only send color requests over to clangd if it supports it Rationale for this change: clangd recently implemented didSave support, it is used to rebuild preambles when the user edits a header file referenced by an open file. Change-Id: Ie6e2198bdeccb9d1b4083806c254475baadc2d2b
1068 lines
37 KiB
Swift
1068 lines
37 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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import BuildServerProtocol
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import Dispatch
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import Foundation
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import IndexStoreDB
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import LanguageServerProtocol
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import LSPLogging
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import SKCore
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import SKSupport
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import TSCBasic
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import TSCLibc
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import TSCUtility
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public typealias URL = Foundation.URL
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/// The SourceKit language server.
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///
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/// This is the client-facing language server implementation, providing indexing, multiple-toolchain
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/// and cross-language support. Requests may be dispatched to language-specific services or handled
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/// centrally, but this is transparent to the client.
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public final class SourceKitServer: LanguageServer {
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struct LanguageServiceKey: Hashable {
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var toolchain: String
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var language: Language
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}
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let options: Options
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let toolchainRegistry: ToolchainRegistry
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var languageService: [LanguageServiceKey: ToolchainLanguageServer] = [:]
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/// Documents that are ready for requests and notifications.
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/// This generally means that the `BuildSystem` has notified of us of build settings.
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var documentsReady: Set<DocumentURI> = []
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private var documentToPendingQueue: [DocumentURI: DocumentNotificationRequestQueue] = [:]
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public var workspace: Workspace?
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let fs: FileSystem
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var onExit: () -> Void
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/// Creates a language server for the given client.
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public init(client: Connection, fileSystem: FileSystem = localFileSystem, options: Options, onExit: @escaping () -> Void = {}) {
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self.fs = fileSystem
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self.toolchainRegistry = ToolchainRegistry.shared
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self.options = options
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self.onExit = onExit
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super.init(client: client)
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}
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public override func _registerBuiltinHandlers() {
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_register(SourceKitServer.initialize)
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_register(SourceKitServer.clientInitialized)
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_register(SourceKitServer.cancelRequest)
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_register(SourceKitServer.shutdown)
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_register(SourceKitServer.exit)
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registerWorkspaceNotfication(SourceKitServer.openDocument)
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registerWorkspaceNotfication(SourceKitServer.closeDocument)
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registerWorkspaceNotfication(SourceKitServer.changeDocument)
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registerToolchainTextDocumentNotification(SourceKitServer.willSaveDocument)
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registerToolchainTextDocumentNotification(SourceKitServer.didSaveDocument)
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registerWorkspaceRequest(SourceKitServer.workspaceSymbols)
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registerWorkspaceRequest(SourceKitServer.pollIndex)
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registerWorkspaceRequest(SourceKitServer.executeCommand)
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registerToolchainTextDocumentRequest(SourceKitServer.completion,
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CompletionList(isIncomplete: false, items: []))
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registerToolchainTextDocumentRequest(SourceKitServer.hover, nil)
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registerToolchainTextDocumentRequest(SourceKitServer.definition, .locations([]))
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registerToolchainTextDocumentRequest(SourceKitServer.references, [])
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registerToolchainTextDocumentRequest(SourceKitServer.implementation, .locations([]))
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registerToolchainTextDocumentRequest(SourceKitServer.symbolInfo, [])
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registerToolchainTextDocumentRequest(SourceKitServer.documentSymbolHighlight, nil)
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registerToolchainTextDocumentRequest(SourceKitServer.foldingRange, nil)
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registerToolchainTextDocumentRequest(SourceKitServer.documentSymbol, nil)
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registerToolchainTextDocumentRequest(SourceKitServer.documentColor, [])
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registerToolchainTextDocumentRequest(SourceKitServer.colorPresentation, [])
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registerToolchainTextDocumentRequest(SourceKitServer.codeAction, nil)
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}
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/// Register a `TextDocumentRequest` that requires a valid `Workspace`, `ToolchainLanguageServer`,
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/// and open file with resolved (yet potentially invalid) build settings.
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func registerToolchainTextDocumentRequest<PositionRequest: TextDocumentRequest>(
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_ requestHandler: @escaping (SourceKitServer) ->
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(Request<PositionRequest>, Workspace, ToolchainLanguageServer) -> Void,
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_ fallback: PositionRequest.Response
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) {
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_register { [unowned self] (req: Request<PositionRequest>) in
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guard let workspace = self.workspace else {
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return req.reply(.failure(.serverNotInitialized))
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}
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let doc = req.params.textDocument.uri
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// This should be created as soon as we receive an open call, even if the document
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// isn't yet ready.
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guard let languageService = workspace.documentService[doc] else {
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return req.reply(fallback)
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}
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// If the document is ready, we can handle it right now.
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guard !self.documentsReady.contains(doc) else {
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requestHandler(self)(req, workspace, languageService)
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return
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}
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// Not ready to handle it, we'll queue it and handle it later.
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self.documentToPendingQueue[doc, default: DocumentNotificationRequestQueue()].add(operation: {
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[weak self] in
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guard let self = self else { return }
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requestHandler(self)(req, workspace, languageService)
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}, cancellationHandler: {
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req.reply(fallback)
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})
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}
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}
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/// Register a `TextDocumentNotification` that requires a valid
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/// `ToolchainLanguageServer` and open file with resolved (yet
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/// potentially invalid) build settings.
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func registerToolchainTextDocumentNotification<TextNotification: TextDocumentNotification>(
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_ notificationHandler: @escaping (SourceKitServer) ->
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(Notification<TextNotification>, ToolchainLanguageServer) -> Void
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) {
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_register { [unowned self] (note: Notification<TextNotification>) in
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guard let workspace = self.workspace else {
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return
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}
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let doc = note.params.textDocument.uri
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// This should be created as soon as we receive an open call, even if the document
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// isn't yet ready.
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guard let languageService = workspace.documentService[doc] else {
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return
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}
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// If the document is ready, we can handle it right now.
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guard !self.documentsReady.contains(doc) else {
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notificationHandler(self)(note, languageService)
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return
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}
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// Not ready to handle it, we'll queue it and handle it later.
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self.documentToPendingQueue[doc, default: DocumentNotificationRequestQueue()].add(operation: {
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[weak self] in
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guard let self = self else { return }
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notificationHandler(self)(note, languageService)
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})
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}
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}
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/// Register a request handler which requires a valid `Workspace`. If called before a valid
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/// `Workspace` exists, this will immediately fail the request.
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func registerWorkspaceRequest<R>(
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_ requestHandler: @escaping (SourceKitServer) -> (Request<R>, Workspace) -> Void)
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{
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_register { [unowned self] (req: Request<R>) in
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guard let workspace = self.workspace else {
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return req.reply(.failure(.serverNotInitialized))
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}
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requestHandler(self)(req, workspace)
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}
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}
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/// Register a notification handler which requires a valid `Workspace`. If called before a
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/// valid `Workspace` exists, the notification is ignored and an error is logged.
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func registerWorkspaceNotfication<N>(
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_ noteHandler: @escaping (SourceKitServer) -> (Notification<N>, Workspace) -> Void)
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{
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_register { [unowned self] (note: Notification<N>) in
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guard let workspace = self.workspace else {
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log("received notification before \"initialize\", ignoring...", level: .error)
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return
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}
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noteHandler(self)(note, workspace)
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}
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}
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public override func _handleUnknown<R>(_ req: Request<R>) {
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if req.clientID == ObjectIdentifier(client) {
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return super._handleUnknown(req)
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}
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// Unknown requests from a language server are passed on to the client.
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let id = client.send(req.params, queue: queue) { result in
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req.reply(result)
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}
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req.cancellationToken.addCancellationHandler {
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self.client.send(CancelRequestNotification(id: id))
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}
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}
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/// Handle an unknown notification.
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public override func _handleUnknown<N>(_ note: Notification<N>) {
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if note.clientID == ObjectIdentifier(client) {
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return super._handleUnknown(note)
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}
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// Unknown notifications from a language server are passed on to the client.
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client.send(note.params)
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}
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func toolchain(for uri: DocumentURI, _ language: Language) -> Toolchain? {
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let supportsLang = { (toolchain: Toolchain) -> Bool in
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// FIXME: the fact that we're looking at clangd/sourcekitd instead of the compiler indicates this method needs a parameter stating what kind of tool we're looking for.
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switch language {
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case .swift:
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return toolchain.sourcekitd != nil
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case .c, .cpp, .objective_c, .objective_cpp:
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return toolchain.clangd != nil
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default:
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return false
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}
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}
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if let toolchain = toolchainRegistry.default, supportsLang(toolchain) {
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return toolchain
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}
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for toolchain in toolchainRegistry.toolchains {
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if supportsLang(toolchain) {
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return toolchain
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}
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}
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return nil
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}
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func languageService(
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for toolchain: Toolchain,
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_ language: Language,
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in workspace: Workspace
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) -> ToolchainLanguageServer? {
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let key = LanguageServiceKey(toolchain: toolchain.identifier, language: language)
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if let service = languageService[key] {
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return service
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}
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// Start a new service.
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return orLog("failed to start language service", level: .error) {
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guard let service = try SourceKit.languageService(for: toolchain, language, options: options, client: self, in: workspace) else {
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return nil
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}
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let pid = Int(ProcessInfo.processInfo.processIdentifier)
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let resp = try service.initializeSync(InitializeRequest(
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processId: pid,
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rootPath: nil,
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rootURI: workspace.rootUri,
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initializationOptions: nil,
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capabilities: workspace.clientCapabilities,
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trace: .off,
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workspaceFolders: nil))
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// FIXME: store the server capabilities.
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let syncKind = resp.capabilities.textDocumentSync?.change ?? .incremental
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guard syncKind == .incremental else {
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fatalError("non-incremental update not implemented")
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}
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service.clientInitialized(InitializedNotification())
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languageService[key] = service
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return service
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}
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}
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func languageService(for uri: DocumentURI, _ language: Language, in workspace: Workspace) -> ToolchainLanguageServer? {
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if let service = workspace.documentService[uri] {
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return service
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}
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guard let toolchain = toolchain(for: uri, language),
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let service = languageService(for: toolchain, language, in: workspace)
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else {
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return nil
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}
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log("Using toolchain \(toolchain.displayName) (\(toolchain.identifier)) for \(uri)")
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workspace.documentService[uri] = service
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return service
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}
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}
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// MARK: - Build System Delegate
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extension SourceKitServer: BuildSystemDelegate {
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public func buildTargetsChanged(_ changes: [BuildTargetEvent]) {
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// TODO: do something with these changes once build target support is in place
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}
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private func affectedOpenDocumentsForChangeSet(
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_ changes: Set<DocumentURI>,
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_ documentManager: DocumentManager
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) -> Set<DocumentURI> {
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// An empty change set is treated as if all open files have been modified.
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guard !changes.isEmpty else {
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return documentManager.openDocuments
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}
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return documentManager.openDocuments.intersection(changes)
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}
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/// Handle a build settings change notification from the `BuildSystem`.
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/// This has two primary cases:
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/// - Initial settings reported for a given file, now we can fully open it
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/// - Changed settings for an already open file
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public func fileBuildSettingsChanged(
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_ changedFiles: [DocumentURI: FileBuildSettingsChange]
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) {
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queue.async {
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guard let workspace = self.workspace else {
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return
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}
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let documentManager = workspace.documentManager
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let openDocuments = documentManager.openDocuments
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for (uri, change) in changedFiles {
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// Non-ready documents should be considered open even though we haven't
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// opened it with the language service yet.
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guard openDocuments.contains(uri) else { continue }
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guard self.documentsReady.contains(uri) else {
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// Case 1: initial settings for a given file. Now we can process our backlog.
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log("Initial build settings received for opened file \(uri)")
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guard let service = workspace.documentService[uri] else {
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// Unexpected: we should have an existing language service if we've registered for
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// change notifications for an opened but non-ready document.
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log("No language service for build settings change to non-ready file \(uri)",
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level: .error)
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// We're in an odd state, cancel pending requests if we have any.
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self.documentToPendingQueue[uri]?.cancelAll()
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self.documentToPendingQueue[uri] = nil
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continue
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}
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// Notify the language server so it can apply the proper arguments.
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service.documentUpdatedBuildSettings(uri, settings: change.newSettings)
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// Catch up on any queued notifications and requests.
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self.documentToPendingQueue[uri]?.handleAll()
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self.documentToPendingQueue[uri] = nil
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self.documentsReady.insert(uri)
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continue
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}
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// Case 2: changed settings for an already open file.
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log("Build settings changed for opened file \(uri)")
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if let service = workspace.documentService[uri] {
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service.documentUpdatedBuildSettings(uri, settings: change.newSettings)
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}
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}
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}
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}
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/// Handle a dependencies updated notification from the `BuildSystem`.
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/// We inform the respective language services as long as the given file is open
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/// (not queued for opening).
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public func filesDependenciesUpdated(_ changedFiles: Set<DocumentURI>) {
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queue.async {
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guard let workspace = self.workspace else {
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return
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}
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for uri in self.affectedOpenDocumentsForChangeSet(changedFiles, workspace.documentManager) {
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// Make sure the document is ready - otherwise the language service won't
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// know about the document yet.
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guard self.documentsReady.contains(uri) else {
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continue
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}
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log("Dependencies updated for opened file \(uri)")
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if let service = workspace.documentService[uri] {
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service.documentDependenciesUpdated(uri)
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}
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}
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}
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}
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}
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// MARK: - Request and notification handling
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extension SourceKitServer {
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// MARK: - General
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func initialize(_ req: Request<InitializeRequest>) {
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var indexOptions = self.options.indexOptions
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if case .dictionary(let options) = req.params.initializationOptions {
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if case .bool(let listenToUnitEvents) = options["listenToUnitEvents"] {
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indexOptions.listenToUnitEvents = listenToUnitEvents
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}
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}
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// Any messages sent before initialize returns are expected to fail, so this will run before
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// the first "supported" request. Run asynchronously to hide the latency of setting up the
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// build system and index.
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queue.async {
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if let uri = req.params.rootURI {
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self.workspace = try? Workspace(
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rootUri: uri,
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clientCapabilities: req.params.capabilities,
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toolchainRegistry: self.toolchainRegistry,
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buildSetup: self.options.buildSetup,
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indexOptions: indexOptions)
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} else if let path = req.params.rootPath {
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self.workspace = try? Workspace(
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rootUri: DocumentURI(URL(fileURLWithPath: path)),
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clientCapabilities: req.params.capabilities,
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toolchainRegistry: self.toolchainRegistry,
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buildSetup: self.options.buildSetup,
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indexOptions: indexOptions)
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}
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if self.workspace == nil {
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log("no workspace found", level: .warning)
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self.workspace = Workspace(
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rootUri: req.params.rootURI,
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clientCapabilities: req.params.capabilities,
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toolchainRegistry: self.toolchainRegistry,
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buildSetup: self.options.buildSetup,
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underlyingBuildSystem: nil,
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index: nil,
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indexDelegate: nil)
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}
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assert(self.workspace != nil)
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self.workspace?.buildSystemManager.delegate = self
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}
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req.reply(InitializeResult(capabilities: ServerCapabilities(
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textDocumentSync: TextDocumentSyncOptions(
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openClose: true,
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change: .incremental,
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willSave: true,
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willSaveWaitUntil: false,
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save: .value(TextDocumentSyncOptions.SaveOptions(includeText: false))
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),
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hoverProvider: true,
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completionProvider: CompletionOptions(
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resolveProvider: false,
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triggerCharacters: ["."]
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),
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definitionProvider: true,
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implementationProvider: .bool(true),
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referencesProvider: true,
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documentHighlightProvider: true,
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documentSymbolProvider: true,
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workspaceSymbolProvider: true,
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codeActionProvider: .value(CodeActionServerCapabilities(
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clientCapabilities: req.params.capabilities.textDocument?.codeAction,
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codeActionOptions: CodeActionOptions(codeActionKinds: nil),
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supportsCodeActions: true
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)),
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colorProvider: .bool(true),
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foldingRangeProvider: .bool(true),
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executeCommandProvider: ExecuteCommandOptions(
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commands: builtinSwiftCommands // FIXME: Clangd commands?
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)
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)))
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}
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|
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func clientInitialized(_: Notification<InitializedNotification>) {
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|
// Nothing to do.
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}
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|
|
func cancelRequest(_ notification: Notification<CancelRequestNotification>) {
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|
let key = RequestCancelKey(client: notification.clientID, request: notification.params.id)
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|
requestCancellation[key]?.cancel()
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}
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|
|
/// The server is about to exit, and the server should flush any buffered state.
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///
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|
/// The server shall not be used to handle more requests (other than possibly
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/// `shutdown` and `exit`) and should attempt to flush any buffered state
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/// immediately, such as sending index changes to disk.
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|
public func prepareForExit() {
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|
// Note: this method should be safe to call multiple times, since we want to
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|
// be resilient against multiple possible shutdown sequences, including
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// pipe failure.
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|
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// Close the index, which will flush to disk.
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|
self.queue.sync {
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self._prepareForExit()
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}
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}
|
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|
|
func _prepareForExit() {
|
|
// Note: this method should be safe to call multiple times, since we want to
|
|
// be resilient against multiple possible shutdown sequences, including
|
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// pipe failure.
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|
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// Close the index, which will flush to disk.
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self.workspace?.index = nil
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}
|
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|
|
|
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func shutdown(_ request: Request<ShutdownRequest>) {
|
|
_prepareForExit()
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request.reply(VoidResponse())
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}
|
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|
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func exit(_ notification: Notification<ExitNotification>) {
|
|
// Should have been called in shutdown, but allow misbehaving clients.
|
|
_prepareForExit()
|
|
|
|
// Call onExit only once, and hop off queue to allow the handler to call us back.
|
|
let onExit = self.onExit
|
|
self.onExit = {}
|
|
DispatchQueue.global().async {
|
|
onExit()
|
|
}
|
|
}
|
|
|
|
// MARK: - Text synchronization
|
|
|
|
func openDocument(_ note: Notification<DidOpenTextDocumentNotification>, workspace: Workspace) {
|
|
// Immediately open the document even if the build system isn't ready. This is important since
|
|
// we check that the document is open when we receive messages from the build system.
|
|
workspace.documentManager.open(note.params)
|
|
|
|
let textDocument = note.params.textDocument
|
|
let uri = textDocument.uri
|
|
let language = textDocument.language
|
|
|
|
// If we can't create a service, this document is unsupported and we can bail here.
|
|
guard let service = languageService(for: uri, language, in: workspace) else {
|
|
return
|
|
}
|
|
|
|
workspace.buildSystemManager.registerForChangeNotifications(for: uri, language: language)
|
|
|
|
// If the document is ready, we can immediately send the notification.
|
|
guard !documentsReady.contains(uri) else {
|
|
service.openDocument(note.params)
|
|
return
|
|
}
|
|
|
|
// Need to queue the open call so we can handle it when ready.
|
|
self.documentToPendingQueue[uri, default: DocumentNotificationRequestQueue()].add(operation: {
|
|
service.openDocument(note.params)
|
|
})
|
|
}
|
|
|
|
func closeDocument(_ note: Notification<DidCloseTextDocumentNotification>, workspace: Workspace) {
|
|
// Immediately close the document. We need to be sure to clear our pending work queue in case
|
|
// the build system still isn't ready.
|
|
workspace.documentManager.close(note.params)
|
|
|
|
let uri = note.params.textDocument.uri
|
|
|
|
workspace.buildSystemManager.unregisterForChangeNotifications(for: uri)
|
|
|
|
// If the document is ready, we can close it now.
|
|
guard !documentsReady.contains(uri) else {
|
|
self.documentsReady.remove(uri)
|
|
workspace.documentService[uri]?.closeDocument(note.params)
|
|
return
|
|
}
|
|
|
|
// Clear any queued notifications via their cancellation handlers.
|
|
// No need to send the notification since it was never considered opened.
|
|
self.documentToPendingQueue[uri]?.cancelAll()
|
|
self.documentToPendingQueue[uri] = nil
|
|
}
|
|
|
|
func changeDocument(_ note: Notification<DidChangeTextDocumentNotification>, workspace: Workspace) {
|
|
let uri = note.params.textDocument.uri
|
|
|
|
// If the document is ready, we can handle the change right now.
|
|
guard !documentsReady.contains(uri) else {
|
|
workspace.documentManager.edit(note.params)
|
|
workspace.documentService[uri]?.changeDocument(note.params)
|
|
return
|
|
}
|
|
|
|
// Need to queue the change call so we can handle it when ready.
|
|
self.documentToPendingQueue[uri, default: DocumentNotificationRequestQueue()].add(operation: {
|
|
workspace.documentManager.edit(note.params)
|
|
workspace.documentService[uri]?.changeDocument(note.params)
|
|
})
|
|
}
|
|
|
|
func willSaveDocument(
|
|
_ note: Notification<WillSaveTextDocumentNotification>,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.willSaveDocument(note.params)
|
|
}
|
|
|
|
func didSaveDocument(
|
|
_ note: Notification<DidSaveTextDocumentNotification>,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.didSaveDocument(note.params)
|
|
}
|
|
|
|
// MARK: - Language features
|
|
|
|
func completion(
|
|
_ req: Request<CompletionRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.completion(req)
|
|
}
|
|
|
|
func hover(
|
|
_ req: Request<HoverRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.hover(req)
|
|
}
|
|
|
|
/// Find all symbols in the workspace that include a string in their name.
|
|
/// - returns: An array of SymbolOccurrences that match the string.
|
|
func findWorkspaceSymbols(matching: String) -> [SymbolOccurrence] {
|
|
var symbolOccurenceResults: [SymbolOccurrence] = []
|
|
workspace?.index?.forEachCanonicalSymbolOccurrence(
|
|
containing: matching,
|
|
anchorStart: false,
|
|
anchorEnd: false,
|
|
subsequence: true,
|
|
ignoreCase: true
|
|
) {symbol in
|
|
if !symbol.location.isSystem && !symbol.roles.contains(.accessorOf) {
|
|
symbolOccurenceResults.append(symbol)
|
|
}
|
|
return true
|
|
}
|
|
return symbolOccurenceResults
|
|
}
|
|
|
|
/// Handle a workspace/symbols request, returning the SymbolInformation.
|
|
/// - returns: An array with SymbolInformation for each matching symbol in the workspace.
|
|
func workspaceSymbols(_ req: Request<WorkspaceSymbolsRequest>, workspace: Workspace) {
|
|
let symbols = findWorkspaceSymbols(
|
|
matching: req.params.query
|
|
).map({symbolOccurrence -> SymbolInformation in
|
|
let symbolPosition = Position(
|
|
line: symbolOccurrence.location.line - 1, // 1-based -> 0-based
|
|
// FIXME: we need to convert the utf8/utf16 column, which may require reading the file!
|
|
utf16index: symbolOccurrence.location.utf8Column - 1)
|
|
|
|
let symbolLocation = Location(
|
|
uri: DocumentURI(URL(fileURLWithPath: symbolOccurrence.location.path)),
|
|
range: Range(symbolPosition))
|
|
|
|
return SymbolInformation(
|
|
name: symbolOccurrence.symbol.name,
|
|
kind: symbolOccurrence.symbol.kind.asLspSymbolKind(),
|
|
deprecated: nil,
|
|
location: symbolLocation,
|
|
containerName: symbolOccurrence.getContainerName()
|
|
)
|
|
})
|
|
req.reply(symbols)
|
|
}
|
|
|
|
/// Forwards a SymbolInfoRequest to the appropriate toolchain service for this document.
|
|
func symbolInfo(
|
|
_ req: Request<SymbolInfoRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.symbolInfo(req)
|
|
}
|
|
|
|
func documentSymbolHighlight(
|
|
_ req: Request<DocumentHighlightRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.documentSymbolHighlight(req)
|
|
}
|
|
|
|
func foldingRange(
|
|
_ req: Request<FoldingRangeRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer) {
|
|
languageService.foldingRange(req)
|
|
}
|
|
|
|
func documentSymbol(
|
|
_ req: Request<DocumentSymbolRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.documentSymbol(req)
|
|
}
|
|
|
|
func documentColor(
|
|
_ req: Request<DocumentColorRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.documentColor(req)
|
|
}
|
|
|
|
func colorPresentation(
|
|
_ req: Request<ColorPresentationRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
languageService.colorPresentation(req)
|
|
}
|
|
|
|
func executeCommand(_ req: Request<ExecuteCommandRequest>, workspace: Workspace) {
|
|
guard let uri = req.params.textDocument?.uri else {
|
|
log("attempted to perform executeCommand request without an url!", level: .error)
|
|
req.reply(nil)
|
|
return
|
|
}
|
|
guard let languageService = workspace.documentService[uri] else {
|
|
req.reply(nil)
|
|
return
|
|
}
|
|
|
|
// If the document isn't yet ready, queue the request.
|
|
guard self.documentsReady.contains(uri) else {
|
|
self.documentToPendingQueue[uri, default: DocumentNotificationRequestQueue()].add(operation: {
|
|
[weak self] in
|
|
guard let self = self else { return }
|
|
self.fowardExecuteCommand(req, languageService: languageService)
|
|
}, cancellationHandler: {
|
|
req.reply(nil)
|
|
})
|
|
return
|
|
}
|
|
|
|
self.fowardExecuteCommand(req, languageService: languageService)
|
|
}
|
|
|
|
func fowardExecuteCommand(
|
|
_ req: Request<ExecuteCommandRequest>,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
let params = req.params
|
|
let executeCommand = ExecuteCommandRequest(command: params.command,
|
|
arguments: params.argumentsWithoutSourceKitMetadata)
|
|
let callback = callbackOnQueue(self.queue) { (result: Result<ExecuteCommandRequest.Response, ResponseError>) in
|
|
req.reply(result)
|
|
}
|
|
let request = Request(executeCommand, id: req.id, clientID: ObjectIdentifier(self),
|
|
cancellation: req.cancellationToken, reply: callback)
|
|
languageService.executeCommand(request)
|
|
}
|
|
|
|
func codeAction(
|
|
_ req: Request<CodeActionRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
let codeAction = CodeActionRequest(range: req.params.range, context: req.params.context,
|
|
textDocument: req.params.textDocument)
|
|
let callback = callbackOnQueue(self.queue) { (result: Result<CodeActionRequest.Response, ResponseError>) in
|
|
switch result {
|
|
case .success(let reply):
|
|
req.reply(req.params.injectMetadata(toResponse: reply))
|
|
default:
|
|
req.reply(result)
|
|
}
|
|
}
|
|
let request = Request(codeAction, id: req.id, clientID: ObjectIdentifier(self),
|
|
cancellation: req.cancellationToken, reply: callback)
|
|
languageService.codeAction(request)
|
|
}
|
|
|
|
func definition(
|
|
_ req: Request<DefinitionRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
let symbolInfo = SymbolInfoRequest(textDocument: req.params.textDocument, position: req.params.position)
|
|
let index = self.workspace?.index
|
|
let callback = callbackOnQueue(self.queue) { (result: Result<SymbolInfoRequest.Response, ResponseError>) in
|
|
guard let symbols: [SymbolDetails] = result.success ?? nil, let symbol = symbols.first else {
|
|
let handled = languageService.definition(req)
|
|
guard !handled else { return }
|
|
if let error = result.failure {
|
|
req.reply(.failure(error))
|
|
} else {
|
|
req.reply(.locations([]))
|
|
}
|
|
return
|
|
}
|
|
|
|
let fallbackLocation = [symbol.bestLocalDeclaration].compactMap { $0 }
|
|
|
|
guard let usr = symbol.usr, let index = index else {
|
|
return req.reply(.locations(fallbackLocation))
|
|
}
|
|
|
|
log("performing indexed jump-to-def with usr \(usr)")
|
|
|
|
var occurs = index.occurrences(ofUSR: usr, roles: [.definition])
|
|
if occurs.isEmpty {
|
|
occurs = index.occurrences(ofUSR: usr, roles: [.declaration])
|
|
}
|
|
|
|
// FIXME: overrided method logic
|
|
|
|
let locations = occurs.compactMap { occur -> Location? in
|
|
if occur.location.path.isEmpty {
|
|
return nil
|
|
}
|
|
return Location(
|
|
uri: DocumentURI(URL(fileURLWithPath: occur.location.path)),
|
|
range: Range(Position(
|
|
line: occur.location.line - 1, // 1-based -> 0-based
|
|
// FIXME: we need to convert the utf8/utf16 column, which may require reading the file!
|
|
utf16index: occur.location.utf8Column - 1
|
|
))
|
|
)
|
|
}
|
|
|
|
req.reply(.locations(locations.isEmpty ? fallbackLocation : locations))
|
|
}
|
|
let request = Request(symbolInfo, id: req.id, clientID: ObjectIdentifier(self),
|
|
cancellation: req.cancellationToken, reply: callback)
|
|
languageService.symbolInfo(request)
|
|
}
|
|
|
|
// FIXME: a lot of duplication with definition request
|
|
func implementation(
|
|
_ req: Request<ImplementationRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
let symbolInfo = SymbolInfoRequest(textDocument: req.params.textDocument, position: req.params.position)
|
|
let index = self.workspace?.index
|
|
let callback = callbackOnQueue(self.queue) { (result: Result<SymbolInfoRequest.Response, ResponseError>) in
|
|
guard let symbols: [SymbolDetails] = result.success ?? nil, let symbol = symbols.first else {
|
|
if let error = result.failure {
|
|
req.reply(.failure(error))
|
|
} else {
|
|
req.reply(.locations([]))
|
|
}
|
|
return
|
|
}
|
|
|
|
guard let usr = symbol.usr, let index = index else {
|
|
return req.reply(.locations([]))
|
|
}
|
|
|
|
var occurs = index.occurrences(ofUSR: usr, roles: .baseOf)
|
|
if occurs.isEmpty {
|
|
occurs = index.occurrences(relatedToUSR: usr, roles: .overrideOf)
|
|
}
|
|
|
|
let locations = occurs.compactMap { occur -> Location? in
|
|
if occur.location.path.isEmpty {
|
|
return nil
|
|
}
|
|
return Location(
|
|
uri: DocumentURI(URL(fileURLWithPath: occur.location.path)),
|
|
range: Range(Position(
|
|
line: occur.location.line - 1, // 1-based -> 0-based
|
|
// FIXME: we need to convert the utf8/utf16 column, which may require reading the file!
|
|
utf16index: occur.location.utf8Column - 1
|
|
))
|
|
)
|
|
}
|
|
|
|
req.reply(.locations(locations))
|
|
}
|
|
let request = Request(symbolInfo, id: req.id, clientID: ObjectIdentifier(self),
|
|
cancellation: req.cancellationToken, reply: callback)
|
|
languageService.symbolInfo(request)
|
|
}
|
|
|
|
// FIXME: a lot of duplication with definition request
|
|
func references(
|
|
_ req: Request<ReferencesRequest>,
|
|
workspace: Workspace,
|
|
languageService: ToolchainLanguageServer
|
|
) {
|
|
let symbolInfo = SymbolInfoRequest(textDocument: req.params.textDocument, position: req.params.position)
|
|
let callback = callbackOnQueue(self.queue) { (result: Result<SymbolInfoRequest.Response, ResponseError>) in
|
|
guard let symbols: [SymbolDetails] = result.success ?? nil, let symbol = symbols.first else {
|
|
if let error = result.failure {
|
|
req.reply(.failure(error))
|
|
} else {
|
|
req.reply([])
|
|
}
|
|
return
|
|
}
|
|
|
|
guard let usr = symbol.usr, let index = workspace.index else {
|
|
req.reply([])
|
|
return
|
|
}
|
|
|
|
log("performing indexed jump-to-def with usr \(usr)")
|
|
|
|
var roles: SymbolRole = [.reference]
|
|
if req.params.context.includeDeclaration {
|
|
roles.formUnion([.declaration, .definition])
|
|
}
|
|
|
|
let occurs = index.occurrences(ofUSR: usr, roles: roles)
|
|
|
|
let locations = occurs.compactMap { occur -> Location? in
|
|
if occur.location.path.isEmpty {
|
|
return nil
|
|
}
|
|
return Location(
|
|
uri: DocumentURI(URL(fileURLWithPath: occur.location.path)),
|
|
range: Range(Position(
|
|
line: occur.location.line - 1, // 1-based -> 0-based
|
|
// FIXME: we need to convert the utf8/utf16 column, which may require reading the file!
|
|
utf16index: occur.location.utf8Column - 1
|
|
))
|
|
)
|
|
}
|
|
|
|
req.reply(locations)
|
|
}
|
|
let request = Request(symbolInfo, id: req.id, clientID: ObjectIdentifier(self),
|
|
cancellation: req.cancellationToken, reply: callback)
|
|
languageService.symbolInfo(request)
|
|
}
|
|
|
|
func pollIndex(_ req: Request<PollIndexRequest>, workspace: Workspace) {
|
|
workspace.index?.pollForUnitChangesAndWait()
|
|
req.reply(VoidResponse())
|
|
}
|
|
}
|
|
|
|
private func callbackOnQueue<R: ResponseType>(
|
|
_ queue: DispatchQueue,
|
|
_ callback: @escaping (LSPResult<R>) -> Void
|
|
) -> (LSPResult<R>) -> Void {
|
|
return { (result: LSPResult<R>) in
|
|
queue.async {
|
|
callback(result)
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Creates a new connection from `client` to a service for `language` if available, and launches
|
|
/// the service. Does *not* send the initialization request.
|
|
///
|
|
/// - returns: The connection, if a suitable language service is available; otherwise nil.
|
|
/// - throws: If there is a suitable service but it fails to launch, throws an error.
|
|
public func languageService(
|
|
for toolchain: Toolchain,
|
|
_ language: Language,
|
|
options: SourceKitServer.Options,
|
|
client: MessageHandler,
|
|
in workspace: Workspace) throws -> ToolchainLanguageServer?
|
|
{
|
|
switch language {
|
|
|
|
case .c, .cpp, .objective_c, .objective_cpp:
|
|
guard toolchain.clangd != nil else { return nil }
|
|
return try makeJSONRPCClangServer(client: client, toolchain: toolchain, buildSystem: workspace.buildSystemManager, clangdOptions: options.clangdOptions)
|
|
|
|
case .swift:
|
|
guard let sourcekitd = toolchain.sourcekitd else { return nil }
|
|
return try makeLocalSwiftServer(client: client, sourcekitd: sourcekitd, buildSystem: workspace.buildSystemManager, clientCapabilities: workspace.clientCapabilities)
|
|
|
|
default:
|
|
return nil
|
|
}
|
|
}
|
|
|
|
public typealias Notification = LanguageServerProtocol.Notification
|
|
public typealias Diagnostic = LanguageServerProtocol.Diagnostic
|
|
|
|
extension IndexSymbolKind {
|
|
func asLspSymbolKind() -> SymbolKind {
|
|
switch self {
|
|
case .class:
|
|
return .class
|
|
case .classMethod, .instanceMethod, .staticMethod:
|
|
return .method
|
|
case .instanceProperty, .staticProperty, .classProperty:
|
|
return .property
|
|
case .enum:
|
|
return .enum
|
|
case .enumConstant:
|
|
return .enumMember
|
|
case .protocol:
|
|
return .interface
|
|
case .function, .conversionFunction:
|
|
return .function
|
|
case .variable:
|
|
return .variable
|
|
case .struct:
|
|
return .struct
|
|
case .parameter:
|
|
return .typeParameter
|
|
|
|
default:
|
|
return .null
|
|
}
|
|
}
|
|
}
|
|
|
|
extension SymbolOccurrence {
|
|
/// Get the name of the symbol that is a parent of this symbol, if one exists
|
|
func getContainerName() -> String? {
|
|
return relations.first(where: { $0.roles.contains(.childOf) })?.symbol.name
|
|
}
|
|
}
|
|
|
|
/// Simple struct for pending notifications/requests, including a cancellation handler.
|
|
/// For convenience the notifications/request handlers are type erased via wrapping.
|
|
private struct NotificationRequestOperation {
|
|
let operation: () -> Void
|
|
let cancellationHandler: (() -> Void)?
|
|
}
|
|
|
|
/// Used to queue up notifications and requests for documents which are blocked
|
|
/// on `BuildSystem` operations such as fetching build settings.
|
|
///
|
|
/// Note: This is not thread safe. Must be called from the `SourceKitServer.queue`.
|
|
private struct DocumentNotificationRequestQueue {
|
|
private var queue = [NotificationRequestOperation]()
|
|
|
|
/// Add an operation to the end of the queue.
|
|
mutating func add(operation: @escaping () -> Void, cancellationHandler: (() -> Void)? = nil) {
|
|
queue.append(NotificationRequestOperation(operation: operation, cancellationHandler: cancellationHandler))
|
|
}
|
|
|
|
/// Invoke all operations in the queue.
|
|
mutating func handleAll() {
|
|
for task in queue {
|
|
task.operation()
|
|
}
|
|
queue = []
|
|
}
|
|
|
|
/// Cancel all operations in the queue. No-op for operations without a cancellation
|
|
/// handler.
|
|
mutating func cancelAll() {
|
|
for task in queue {
|
|
if let cancellationHandler = task.cancellationHandler {
|
|
cancellationHandler()
|
|
}
|
|
}
|
|
queue = []
|
|
}
|
|
}
|