add file options request

Author: Richard Howell

Sources/BuildServerProtocol/FileOptions.swift

@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+import LanguageServerProtocol
+
+/// The SourceKitOptions request is sent from the client to the server
+/// to query for the list of compiler options necessary to compile this file.
+public struct SourceKitOptions: RequestType, Hashable {
+  public static let method: String = "textDocument/sourceKitOptions"
+  public typealias Response = SourceKitOptionsResult
+
+  /// The URL of the document to get options for
+  public var uri: URL
+
+  public init(uri: URL) {
+    self.uri = uri
+  }
+}
+
+public struct SourceKitOptionsResult: ResponseType, Hashable {
+  /// The compiler options required for the requested file.
+  public var options: [String]
+
+  /// The working directory for the compile command.
+  public var workingDirectory: String?
+}

Sources/BuildServerProtocol/Messages.swift

@@ -14,11 +14,12 @@ import LanguageServerProtocol
 fileprivate let requestTypes: [_RequestType.Type] = [
   InitializeBuild.self,
   ShutdownBuild.self,
+  SourceKitOptions.self,
 ]
 
 fileprivate let notificationTypes: [NotificationType.Type] = [
-  InitializedBuildNotification.self,
   ExitBuildNotification.self,
+  InitializedBuildNotification.self,
 ]
 
 public let bspRegistry = MessageRegistry(requests: requestTypes, notifications: notificationTypes)