Migrate getting the list of all source files to BSP

Sources/BuildServerProtocol/BuildTargetSourcesRequest.swift

@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 build target sources request is sent from the client to the server to
+/// query for the list of text documents and directories that are belong to a
+/// build target. The sources response must not include sources that are
+/// external to the workspace.
+public struct BuildTargetSourcesRequest: RequestType, Hashable {
+  public static let method: String = "buildTarget/sources"
+  public typealias Response = BuildTargetSourcesResponse
+
+  public var targets: [BuildTargetIdentifier]
+
+  public init(targets: [BuildTargetIdentifier]) {
+    self.targets = targets
+  }
+}
+
+public struct BuildTargetSourcesResponse: ResponseType, Hashable {
+  public var items: [SourcesItem]
+
+  public init(items: [SourcesItem]) {
+    self.items = items
+  }
+}
+
+public struct SourcesItem: Codable, Hashable, Sendable {
+  public var target: BuildTargetIdentifier
+
+  /// The text documents and directories that belong to this build target.
+  public var sources: [SourceItem]
+
+  public init(target: BuildTargetIdentifier, sources: [SourceItem]) {
+    self.target = target
+    self.sources = sources
+  }
+}
+
+public struct SourceItem: Codable, Hashable, Sendable {
+  /// Either a text document or a directory. A directory entry must end with a
+  /// forward slash "/" and a directory entry implies that every nested text
+  /// document within the directory belongs to this source item.
+  public var uri: URI
+
+  /// Type of file of the source item, such as whether it is file or directory.
+  public var kind: SourceItemKind
+
+  /// Indicates if this source is automatically generated by the build and is
+  /// not intended to be manually edited by the user.
+  public var generated: Bool
+
+  /// Kind of data to expect in the `data` field. If this field is not set, the kind of data is not specified.
+  public var dataKind: SourceItemDataKind?
+
+  /// Language-specific metadata about this source item.
+  public var data: LSPAny?
+
+  public init(
+    uri: URI,
+    kind: SourceItemKind,
+    generated: Bool,
+    dataKind: SourceItemDataKind? = nil,
+    data: LSPAny? = nil
+  ) {
+    self.uri = uri
+    self.kind = kind
+    self.generated = generated
+    self.dataKind = dataKind
+    self.data = data
+  }
+}
+
+public enum SourceItemKind: Int, Codable, Hashable, Sendable {
+  /// The source item references a normal file.
+  case file = 1
+
+  /// The source item references a directory.
+  case directory = 2
+}
+
+public struct SourceItemDataKind: RawRepresentable, Codable, Hashable, Sendable {
+  public var rawValue: String
+
+  public init(rawValue: String) {
+    self.rawValue = rawValue
+  }
+
+  /// `data` field must contain a JvmSourceItemData object.
+  public static let jvm = "jvm"
+}

Sources/BuildServerProtocol/BuildTargets.swift → Sources/BuildServerProtocol/BuildTargetsRequest.swift

@@ -9,21 +9,26 @@
 // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 //
 //===----------------------------------------------------------------------===//
+
 import LanguageServerProtocol
 
 public typealias URI = DocumentURI
 
 /// The workspace build targets request is sent from the client to the server to
 /// ask for the list of all available build targets in the workspace.
-public struct BuildTargets: RequestType, Hashable {
+public struct BuildTargetsRequest: RequestType, Hashable {
   public static let method: String = "workspace/buildTargets"
-  public typealias Response = BuildTargetsResult
+  public typealias Response = BuildTargetsResponse
 
   public init() {}
 }
 
-public struct BuildTargetsResult: ResponseType, Hashable {
+public struct BuildTargetsResponse: ResponseType, Hashable {
   public var targets: [BuildTarget]
+
+  public init(targets: [BuildTarget]) {
+    self.targets = targets
+  }
 }
 
 public struct BuildTarget: Codable, Hashable, Sendable {
@@ -52,16 +57,23 @@ public struct BuildTarget: Codable, Hashable, Sendable {
   /// are free to define new tags for custom purposes.
   public var tags: [BuildTargetTag]
 
-  /// The capabilities of this build target.
-  public var capabilities: BuildTargetCapabilities
-
   /// The set of languages that this target contains.
   /// The ID string for each language is defined in the LSP.
   public var languageIds: [Language]
 
   /// The direct upstream build target dependencies of this build target
   public var dependencies: [BuildTargetIdentifier]
 
+  /// The capabilities of this build target.
+  public var capabilities: BuildTargetCapabilities
+
+  /// Kind of data to expect in the `data` field. If this field is not set, the kind of data is not specified.
+  public var dataKind: BuildTargetDataKind?
+
+  /// Language-specific metadata about this target.
+  /// See ScalaBuildTarget as an example.
+  public var data: LSPAny?
+
   public init(
     id: BuildTargetIdentifier,
     displayName: String?,
@@ -96,17 +108,13 @@ public struct BuildTargetTag: Codable, Hashable, RawRepresentable, Sendable {
     self.rawValue = rawValue
   }
 
-  /// Target contains re-usable functionality for downstream targets. May have
-  /// any combination of capabilities.
-  public static let library: Self = Self(rawValue: "library")
-
   /// Target contains source code for producing any kind of application, may
   /// have but does not require the `canRun` capability.
   public static let application: Self = Self(rawValue: "application")
 
-  /// Target contains source code for testing purposes, may have but does not
-  /// require the `canTest` capability.
-  public static let test: Self = Self(rawValue: "test")
+  /// Target contains source code to measure performance of a program, may have
+  /// but does not require the `canRun` build target capability.
+  public static let benchmark: Self = Self(rawValue: "benchmark")
 
   /// Target contains source code for integration testing purposes, may have
   /// but does not require the `canTest` capability. The difference between
@@ -115,77 +123,76 @@ public struct BuildTargetTag: Codable, Hashable, RawRepresentable, Sendable {
   /// execute.
   public static let integrationTest: Self = Self(rawValue: "integration-test")
 
-  /// Target contains source code to measure performance of a program, may have
-  /// but does not require the `canRun` build target capability.
-  public static let benchmark: Self = Self(rawValue: "benchmark")
+  /// Target contains re-usable functionality for downstream targets. May have
+  /// any combination of capabilities.
+  public static let library: Self = Self(rawValue: "library")
+
+  /// Actions on the target such as build and test should only be invoked manually
+  /// and explicitly. For example, triggering a build on all targets in the workspace
+  /// should by default not include this target.
+  /// The original motivation to add the "manual" tag comes from a similar functionality
+  /// that exists in Bazel, where targets with this tag have to be specified explicitly
+  /// on the command line.
+  public static let manual: Self = Self(rawValue: "manual")
 
   /// Target should be ignored by IDEs.
   public static let noIDE: Self = Self(rawValue: "no-ide")
+
+  /// Target contains source code for testing purposes, may have but does not
+  /// require the `canTest` capability.
+  public static let test: Self = Self(rawValue: "test")
+
+  /// This is a target of a dependency from the project the user opened, eg. a target that builds a SwiftPM dependency.
+  ///
+  /// **(BSP Extension)**
+  public static let dependency: Self = Self(rawValue: "dependency")
 }
 
 public struct BuildTargetCapabilities: Codable, Hashable, Sendable {
   /// This target can be compiled by the BSP server.
-  public var canCompile: Bool
+  public var canCompile: Bool?
 
   /// This target can be tested by the BSP server.
-  public var canTest: Bool
+  public var canTest: Bool?
 
   /// This target can be run by the BSP server.
-  public var canRun: Bool
+  public var canRun: Bool?
+
+  /// This target can be debugged by the BSP server.
+  public var canDebug: Bool?
 
-  public init(canCompile: Bool, canTest: Bool, canRun: Bool) {
+  public init(canCompile: Bool? = nil, canTest: Bool? = nil, canRun: Bool? = nil, canDebug: Bool? = nil) {
     self.canCompile = canCompile
     self.canTest = canTest
     self.canRun = canRun
+    self.canDebug = canDebug
   }
 }
 
-/// The build target sources request is sent from the client to the server to
-/// query for the list of text documents and directories that are belong to a
-/// build target. The sources response must not include sources that are
-/// external to the workspace.
-public struct BuildTargetSources: RequestType, Hashable {
-  public static let method: String = "buildTarget/sources"
-  public typealias Response = BuildTargetSourcesResult
-
-  public var targets: [BuildTargetIdentifier]
+public struct BuildTargetDataKind: RawRepresentable, Codable, Hashable, Sendable {
+  public var rawValue: String
 
-  public init(targets: [BuildTargetIdentifier]) {
-    self.targets = targets
+  public init(rawValue: String) {
+    self.rawValue = rawValue
   }
-}
-
-public struct BuildTargetSourcesResult: ResponseType, Hashable {
-  public var items: [SourcesItem]
-}
-
-public struct SourcesItem: Codable, Hashable, Sendable {
-  public var target: BuildTargetIdentifier
 
-  /// The text documents and directories that belong to this build target.
-  public var sources: [SourceItem]
-}
+  /// `data` field must contain a CargoBuildTarget object.
+  public static let cargo = "cargo"
 
-public struct SourceItem: Codable, Hashable, Sendable {
-  /// Either a text document or a directory. A directory entry must end with a
-  /// forward slash "/" and a directory entry implies that every nested text
-  /// document within the directory belongs to this source item.
-  public var uri: URI
+  /// `data` field must contain a CppBuildTarget object.
+  public static let cpp = "cpp"
 
-  /// Type of file of the source item, such as whether it is file or directory.
-  public var kind: SourceItemKind
+  /// `data` field must contain a JvmBuildTarget object.
+  public static let jvm = "jvm"
 
-  /// Indicates if this source is automatically generated by the build and is
-  /// not intended to be manually edited by the user.
-  public var generated: Bool
-}
+  /// `data` field must contain a PythonBuildTarget object.
+  public static let python = "python"
 
-public enum SourceItemKind: Int, Codable, Hashable, Sendable {
-  /// The source item references a normal file.
-  case file = 1
+  /// `data` field must contain a SbtBuildTarget object.
+  public static let sbt = "sbt"
 
-  /// The source item references a directory.
-  case directory = 2
+  /// `data` field must contain a ScalaBuildTarget object.
+  public static let scala = "scala"
 }
 
 /// The build target output paths request is sent from the client to the server

Sources/BuildServerProtocol/CMakeLists.txt

@@ -1,5 +1,6 @@
 add_library(BuildServerProtocol STATIC
-  BuildTargets.swift
+  BuildTargetSourcesRequest.swift
+  BuildTargetsRequest.swift
   DidChangeBuildTargetNotification.swift
   DidChangeWatchedFilesNotification.swift
   InitializeBuild.swift

Sources/BuildServerProtocol/Messages.swift

@@ -13,8 +13,8 @@ import LanguageServerProtocol
 
 fileprivate let requestTypes: [_RequestType.Type] = [
   BuildTargetOutputPaths.self,
-  BuildTargets.self,
-  BuildTargetSources.self,
+  BuildTargetsRequest.self,
+  BuildTargetSourcesRequest.self,
   InitializeBuild.self,
   InverseSourcesRequest.self,
   RegisterForChanges.self,

Sources/BuildSystemIntegration/BuildServerBuildSystem.swift

@@ -270,6 +270,39 @@ extension BuildServerBuildSystem: BuiltInBuildSystem {
 
   package nonisolated var supportsPreparation: Bool { false }
 
+  package func buildTargets(request: BuildTargetsRequest) async throws -> BuildTargetsResponse {
+    // TODO: (BSP migration) Forward this request to the BSP server
+    return BuildTargetsResponse(targets: [
+      BuildTarget(
+        id: .dummy,
+        displayName: "Compilation database",
+        baseDirectory: nil,
+        tags: [.test],
+        capabilities: BuildTargetCapabilities(),
+        // Be conservative with the languages that might be used in the target. SourceKit-LSP doesn't use this property.
+        languageIds: [.c, .cpp, .objective_c, .objective_cpp, .swift],
+        dependencies: []
+      )
+    ])
+  }
+
+  package func buildTargetSources(request: BuildTargetSourcesRequest) async throws -> BuildTargetSourcesResponse {
+    // BuildServerBuildSystem does not support syntactic test discovery or background indexing.
+    // (https://github.com/swiftlang/sourcekit-lsp/issues/1173).
+    // TODO: (BSP migration) Forward this request to the BSP server
+    return BuildTargetSourcesResponse(items: [])
+  }
+
+  package func inverseSources(request: InverseSourcesRequest) -> InverseSourcesResponse {
+    return InverseSourcesResponse(targets: [BuildTargetIdentifier.dummy])
+  }
+
+  package func didChangeWatchedFiles(notification: BuildServerProtocol.DidChangeWatchedFilesNotification) {}
+
+  package func prepare(request: PrepareTargetsRequest) async throws -> VoidResponse {
+    throw PrepareNotSupportedError()
+  }
+
   package func sourceKitOptions(request: SourceKitOptionsRequest) async throws -> SourceKitOptionsResponse? {
     // FIXME: (BSP Migration) If the BSP server supports it, send the `SourceKitOptions` request to it. Only do the
     // `RegisterForChanges` dance if we are in the legacy mode.
@@ -313,10 +346,6 @@ extension BuildServerBuildSystem: BuiltInBuildSystem {
     return nil
   }
 
-  package func inverseSources(request: InverseSourcesRequest) -> InverseSourcesResponse {
-    return InverseSourcesResponse(targets: [BuildTargetIdentifier.dummy])
-  }
-
   package func scheduleBuildGraphGeneration() {}
 
   package func waitForUpToDateBuildGraph() async {}
@@ -329,18 +358,6 @@ extension BuildServerBuildSystem: BuiltInBuildSystem {
     return nil
   }
 
-  package func prepare(request: PrepareTargetsRequest) async throws -> VoidResponse {
-    throw PrepareNotSupportedError()
-  }
-
-  package func didChangeWatchedFiles(notification: BuildServerProtocol.DidChangeWatchedFilesNotification) {}
-
-  package func sourceFiles() async -> [SourceFileInfo] {
-    // BuildServerBuildSystem does not support syntactic test discovery or background indexing.
-    // (https://github.com/swiftlang/sourcekit-lsp/issues/1173).
-    return []
-  }
-
   package func addSourceFilesDidChangeCallback(_ callback: @escaping () async -> Void) {
     // BuildServerBuildSystem does not support syntactic test discovery or background indexing.
     // (https://github.com/swiftlang/sourcekit-lsp/issues/1173).