Files
sourcekit-lsp/Sources/SKCore/FallbackBuildSystem.swift
David Goldman cf19900d84 Swap BuildSystem to remove build settings method (#183)
Remove `settings(for:)` from the BuildSystem API in favor of the change callback

- With the `settings(for:)` method removed, we instead block on a
  callback from the `BuildSystemManager` which itself handles
  the primary build system callback in conjunction with the fallback
  system

- We queue up notifications / requests that reference documents
  until we receive the callback.

- Remove language from FileBuildSettings as it is no longer needed,
  Swift-specific working dir fixes are now in SwiftCompileCommand

- registerForChangeNotifications should inform its delegate
  asynchronously instead of immediately
2020-06-01 13:20:15 -04:00

102 lines
3.1 KiB
Swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 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 BuildServerProtocol
import LanguageServerProtocol
import TSCBasic
import enum TSCUtility.Platform
import Dispatch
/// A simple BuildSystem suitable as a fallback when accurate settings are unknown.
public final class FallbackBuildSystem: BuildSystem {
public init() {}
/// The path to the SDK.
public lazy var sdkpath: AbsolutePath? = {
if case .darwin? = Platform.currentPlatform,
let str = try? Process.checkNonZeroExit(
args: "/usr/bin/xcrun", "--show-sdk-path", "--sdk", "macosx"),
let path = try? AbsolutePath(validating: str.spm_chomp())
{
return path
}
return nil
}()
/// Delegate to handle any build system events.
public weak var delegate: BuildSystemDelegate? = nil
public var indexStorePath: AbsolutePath? { return nil }
public var indexDatabasePath: AbsolutePath? { return nil }
public func settings(for uri: DocumentURI, _ language: Language) -> FileBuildSettings? {
switch language {
case .swift:
return settingsSwift(uri.pseudoPath)
case .c, .cpp, .objective_c, .objective_cpp:
return settingsClang(uri.pseudoPath, language)
default:
return nil
}
}
public func registerForChangeNotifications(for uri: DocumentURI, language: Language) {
guard let delegate = self.delegate else { return }
let settings = self.settings(for: uri, language)
DispatchQueue.global().async {
delegate.fileBuildSettingsChanged([uri: FileBuildSettingsChange(settings)])
}
}
/// We don't support change watching.
public func unregisterForChangeNotifications(for: DocumentURI) {}
public func buildTargets(reply: @escaping (LSPResult<[BuildTarget]>) -> Void) {
reply(.failure(buildTargetsNotSupported))
}
public func buildTargetSources(targets: [BuildTargetIdentifier], reply: @escaping (LSPResult<[SourcesItem]>) -> Void) {
reply(.failure(buildTargetsNotSupported))
}
public func buildTargetOutputPaths(targets: [BuildTargetIdentifier], reply: @escaping (LSPResult<[OutputsItem]>) -> Void) {
reply(.failure(buildTargetsNotSupported))
}
func settingsSwift(_ file: String) -> FileBuildSettings {
var args: [String] = []
if let sdkpath = sdkpath {
args += [
"-sdk",
sdkpath.pathString,
]
}
args.append(file)
return FileBuildSettings(compilerArguments: args)
}
func settingsClang(_ file: String, _ language: Language) -> FileBuildSettings {
var args: [String] = []
if let sdkpath = sdkpath {
args += [
"-isysroot",
sdkpath.pathString,
]
}
args.append(file)
return FileBuildSettings(compilerArguments: args)
}
}