mirror of
https://github.com/apple/sourcekit-lsp.git
synced 2026-03-02 18:23:24 +01:00
601 lines
23 KiB
Swift
601 lines
23 KiB
Swift
//===----------------------------------------------------------------------===//
|
||
//
|
||
// This source file is part of the Swift.org open source project
|
||
//
|
||
// Copyright (c) 2014 - 2024 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 Foundation
|
||
import LanguageServerProtocol
|
||
import SKCore
|
||
import SKLogging
|
||
import SKSupport
|
||
import SwiftExtensions
|
||
import ToolchainRegistry
|
||
|
||
import struct TSCBasic.AbsolutePath
|
||
import class TSCBasic.Process
|
||
import struct TSCBasic.ProcessResult
|
||
|
||
private let updateIndexStoreIDForLogging = AtomicUInt32(initialValue: 1)
|
||
|
||
package enum FileToIndex: CustomLogStringConvertible {
|
||
/// A non-header file
|
||
case indexableFile(DocumentURI)
|
||
|
||
/// A header file where `mainFile` should be indexed to update the index of `header`.
|
||
case headerFile(header: DocumentURI, mainFile: DocumentURI)
|
||
|
||
/// The file whose index store should be updated.
|
||
///
|
||
/// This file might be a header file that doesn't have build settings associated with it. For the actual compiler
|
||
/// invocation that updates the index store, the `mainFile` should be used.
|
||
package var sourceFile: DocumentURI {
|
||
switch self {
|
||
case .indexableFile(let uri): return uri
|
||
case .headerFile(header: let header, mainFile: _): return header
|
||
}
|
||
}
|
||
|
||
/// The file that should be used for compiler invocations that update the index.
|
||
///
|
||
/// If the `sourceFile` is a header file, this will be a main file that includes the header. Otherwise, it will be the
|
||
/// same as `sourceFile`.
|
||
var mainFile: DocumentURI {
|
||
switch self {
|
||
case .indexableFile(let uri): return uri
|
||
case .headerFile(header: _, mainFile: let mainFile): return mainFile
|
||
}
|
||
}
|
||
|
||
package var description: String {
|
||
switch self {
|
||
case .indexableFile(let uri):
|
||
return uri.description
|
||
case .headerFile(header: let header, mainFile: let mainFile):
|
||
return "\(header.description) using main file \(mainFile.description)"
|
||
}
|
||
}
|
||
|
||
package var redactedDescription: String {
|
||
switch self {
|
||
case .indexableFile(let uri):
|
||
return uri.redactedDescription
|
||
case .headerFile(header: let header, mainFile: let mainFile):
|
||
return "\(header.redactedDescription) using main file \(mainFile.redactedDescription)"
|
||
}
|
||
}
|
||
}
|
||
|
||
/// A file to index and the target in which the file should be indexed.
|
||
package struct FileAndTarget: Sendable {
|
||
package let file: FileToIndex
|
||
package let target: ConfiguredTarget
|
||
}
|
||
|
||
private enum IndexKind {
|
||
case clang
|
||
case swift
|
||
|
||
init?(language: Language) {
|
||
switch language {
|
||
case .swift:
|
||
self = .swift
|
||
case .c, .cpp, .objective_c, .objective_cpp:
|
||
self = .clang
|
||
default:
|
||
return nil
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Describes a task to index a set of source files.
|
||
///
|
||
/// This task description can be scheduled in a `TaskScheduler`.
|
||
package struct UpdateIndexStoreTaskDescription: IndexTaskDescription {
|
||
package static let idPrefix = "update-indexstore"
|
||
package let id = updateIndexStoreIDForLogging.fetchAndIncrement()
|
||
|
||
/// The files that should be indexed.
|
||
package let filesToIndex: [FileAndTarget]
|
||
|
||
/// The build system manager that is used to get the toolchain and build settings for the files to index.
|
||
private let buildSystemManager: BuildSystemManager
|
||
|
||
/// A reference to the underlying index store. Used to check if the index is already up-to-date for a file, in which
|
||
/// case we don't need to index it again.
|
||
private let index: UncheckedIndex
|
||
|
||
private let indexStoreUpToDateTracker: UpToDateTracker<DocumentURI>
|
||
|
||
/// Whether files that have an up-to-date unit file should be indexed.
|
||
///
|
||
/// In general, this should be `false`. The only situation when this should be set to `true` is when the user
|
||
/// explicitly requested a re-index of all files.
|
||
private let indexFilesWithUpToDateUnit: Bool
|
||
|
||
/// See `SemanticIndexManager.logMessageToIndexLog`.
|
||
private let logMessageToIndexLog: @Sendable (_ taskID: IndexTaskID, _ message: String) -> Void
|
||
|
||
/// How long to wait until we cancel an update indexstore task. This timeout should be long enough that all
|
||
/// `swift-frontend` tasks finish within it. It prevents us from blocking the index if the type checker gets stuck on
|
||
/// an expression for a long time.
|
||
private let timeout: Duration
|
||
|
||
/// Test hooks that should be called when the index task finishes.
|
||
private let testHooks: IndexTestHooks
|
||
|
||
/// The task is idempotent because indexing the same file twice produces the same result as indexing it once.
|
||
package var isIdempotent: Bool { true }
|
||
|
||
package var estimatedCPUCoreCount: Int { 1 }
|
||
|
||
package var description: String {
|
||
return self.redactedDescription
|
||
}
|
||
|
||
package var redactedDescription: String {
|
||
return "update-indexstore-\(id)"
|
||
}
|
||
|
||
static func canIndex(language: Language) -> Bool {
|
||
return IndexKind(language: language) != nil
|
||
}
|
||
|
||
init(
|
||
filesToIndex: [FileAndTarget],
|
||
buildSystemManager: BuildSystemManager,
|
||
index: UncheckedIndex,
|
||
indexStoreUpToDateTracker: UpToDateTracker<DocumentURI>,
|
||
indexFilesWithUpToDateUnit: Bool,
|
||
logMessageToIndexLog: @escaping @Sendable (_ taskID: IndexTaskID, _ message: String) -> Void,
|
||
timeout: Duration,
|
||
testHooks: IndexTestHooks
|
||
) {
|
||
self.filesToIndex = filesToIndex
|
||
self.buildSystemManager = buildSystemManager
|
||
self.index = index
|
||
self.indexStoreUpToDateTracker = indexStoreUpToDateTracker
|
||
self.indexFilesWithUpToDateUnit = indexFilesWithUpToDateUnit
|
||
self.logMessageToIndexLog = logMessageToIndexLog
|
||
self.timeout = timeout
|
||
self.testHooks = testHooks
|
||
}
|
||
|
||
package func execute() async {
|
||
// Only use the last two digits of the indexing ID for the logging scope to avoid creating too many scopes.
|
||
// See comment in `withLoggingScope`.
|
||
// The last 2 digits should be sufficient to differentiate between multiple concurrently running indexing operation.
|
||
await withLoggingSubsystemAndScope(subsystem: indexLoggingSubsystem, scope: "update-indexstore-\(id % 100)") {
|
||
let startDate = Date()
|
||
|
||
await testHooks.updateIndexStoreTaskDidStart?(self)
|
||
|
||
let filesToIndexDescription = filesToIndex.map {
|
||
$0.file.sourceFile.fileURL?.lastPathComponent ?? $0.file.sourceFile.stringValue
|
||
}
|
||
.joined(separator: ", ")
|
||
logger.log(
|
||
"Starting updating index store with priority \(Task.currentPriority.rawValue, privacy: .public): \(filesToIndexDescription)"
|
||
)
|
||
let filesToIndex = filesToIndex.sorted(by: { $0.file.sourceFile.stringValue < $1.file.sourceFile.stringValue })
|
||
// TODO (indexing): Once swiftc supports it, we should group files by target and index files within the same
|
||
// target together in one swiftc invocation.
|
||
// https://github.com/swiftlang/sourcekit-lsp/issues/1268
|
||
for file in filesToIndex {
|
||
await updateIndexStore(forSingleFile: file.file, in: file.target)
|
||
}
|
||
await testHooks.updateIndexStoreTaskDidFinish?(self)
|
||
logger.log(
|
||
"Finished updating index store in \(Date().timeIntervalSince(startDate) * 1000, privacy: .public)ms: \(filesToIndexDescription)"
|
||
)
|
||
}
|
||
}
|
||
|
||
package func dependencies(
|
||
to currentlyExecutingTasks: [UpdateIndexStoreTaskDescription]
|
||
) -> [TaskDependencyAction<UpdateIndexStoreTaskDescription>] {
|
||
let selfMainFiles = Set(filesToIndex.map(\.file.mainFile))
|
||
return currentlyExecutingTasks.compactMap { (other) -> TaskDependencyAction<UpdateIndexStoreTaskDescription>? in
|
||
if !other.filesToIndex.lazy.map(\.file.mainFile).contains(where: { selfMainFiles.contains($0) }) {
|
||
// Disjoint sets of files can be indexed concurrently.
|
||
return nil
|
||
}
|
||
if self.filesToIndex.count < other.filesToIndex.count {
|
||
// If there is an index operation with more files already running, suspend it.
|
||
// The most common use case for this is if we schedule an entire target to be indexed in the background and then
|
||
// need a single file indexed for use interaction. We should suspend the target-wide indexing and just index
|
||
// the current file to get index data for it ASAP.
|
||
return .cancelAndRescheduleDependency(other)
|
||
} else {
|
||
return .waitAndElevatePriorityOfDependency(other)
|
||
}
|
||
}
|
||
}
|
||
|
||
private func updateIndexStore(forSingleFile file: FileToIndex, in target: ConfiguredTarget) async {
|
||
guard await !indexStoreUpToDateTracker.isUpToDate(file.sourceFile) else {
|
||
// If we know that the file is up-to-date without having ot hit the index, do that because it's fastest.
|
||
return
|
||
}
|
||
guard
|
||
indexFilesWithUpToDateUnit
|
||
|| !index.checked(for: .modifiedFiles).hasUpToDateUnit(for: file.sourceFile, mainFile: file.mainFile)
|
||
else {
|
||
logger.debug("Not indexing \(file.forLogging) because index has an up-to-date unit")
|
||
// We consider a file's index up-to-date if we have any up-to-date unit. Changing build settings does not
|
||
// invalidate the up-to-date status of the index.
|
||
return
|
||
}
|
||
if file.mainFile != file.sourceFile {
|
||
logger.log("Updating index store of \(file.forLogging) using main file \(file.mainFile.forLogging)")
|
||
}
|
||
guard let language = await buildSystemManager.defaultLanguage(for: file.mainFile) else {
|
||
logger.error("Not indexing \(file.forLogging) because its language could not be determined")
|
||
return
|
||
}
|
||
let buildSettings = await buildSystemManager.buildSettings(for: file.mainFile, in: target, language: language)
|
||
guard let buildSettings else {
|
||
logger.error("Not indexing \(file.forLogging) because it has no compiler arguments")
|
||
return
|
||
}
|
||
if buildSettings.isFallback {
|
||
// Fallback build settings don’t even have an indexstore path set, so they can't generate index data that we would
|
||
// pick up. Also, indexing with fallback args has some other problems:
|
||
// - If it did generate a unit file, we would consider the file’s index up-to-date even if the compiler arguments
|
||
// change, which means that we wouldn't get any up-to-date-index even when we have build settings for the file.
|
||
// - It's unlikely that the index from a single file with fallback arguments will be very useful as it can't tie
|
||
// into the rest of the project.
|
||
// So, don't index the file.
|
||
logger.error("Not indexing \(file.forLogging) because it has fallback compiler arguments")
|
||
return
|
||
}
|
||
guard let toolchain = await buildSystemManager.toolchain(for: file.mainFile, language) else {
|
||
logger.error(
|
||
"Not updating index store for \(file.forLogging) because no toolchain could be determined for the document"
|
||
)
|
||
return
|
||
}
|
||
let startDate = Date()
|
||
switch IndexKind(language: language) {
|
||
case .swift:
|
||
do {
|
||
try await updateIndexStore(
|
||
forSwiftFile: file.mainFile,
|
||
buildSettings: buildSettings,
|
||
toolchain: toolchain
|
||
)
|
||
} catch {
|
||
logger.error("Updating index store for \(file.forLogging) failed: \(error.forLogging)")
|
||
BuildSettingsLogger.log(settings: buildSettings, for: file.mainFile)
|
||
}
|
||
case .clang:
|
||
do {
|
||
try await updateIndexStore(
|
||
forClangFile: file.mainFile,
|
||
buildSettings: buildSettings,
|
||
toolchain: toolchain
|
||
)
|
||
} catch {
|
||
logger.error("Updating index store for \(file) failed: \(error.forLogging)")
|
||
BuildSettingsLogger.log(settings: buildSettings, for: file.mainFile)
|
||
}
|
||
case nil:
|
||
logger.error(
|
||
"Not updating index store for \(file) because it is a language that is not supported by background indexing"
|
||
)
|
||
}
|
||
await indexStoreUpToDateTracker.markUpToDate([file.sourceFile], updateOperationStartDate: startDate)
|
||
}
|
||
|
||
private func updateIndexStore(
|
||
forSwiftFile uri: DocumentURI,
|
||
buildSettings: FileBuildSettings,
|
||
toolchain: Toolchain
|
||
) async throws {
|
||
guard let swiftc = toolchain.swiftc else {
|
||
logger.error(
|
||
"Not updating index store for \(uri.forLogging) because toolchain \(toolchain.identifier) does not contain a Swift compiler"
|
||
)
|
||
return
|
||
}
|
||
|
||
let indexingArguments = adjustSwiftCompilerArgumentsForIndexStoreUpdate(
|
||
buildSettings.compilerArguments,
|
||
fileToIndex: uri
|
||
)
|
||
|
||
try await runIndexingProcess(
|
||
indexFile: uri,
|
||
buildSettings: buildSettings,
|
||
processArguments: [swiftc.pathString] + indexingArguments,
|
||
workingDirectory: buildSettings.workingDirectory.map(AbsolutePath.init(validating:))
|
||
)
|
||
}
|
||
|
||
private func updateIndexStore(
|
||
forClangFile uri: DocumentURI,
|
||
buildSettings: FileBuildSettings,
|
||
toolchain: Toolchain
|
||
) async throws {
|
||
guard let clang = toolchain.clang else {
|
||
logger.error(
|
||
"Not updating index store for \(uri.forLogging) because toolchain \(toolchain.identifier) does not contain clang"
|
||
)
|
||
return
|
||
}
|
||
|
||
let indexingArguments = adjustClangCompilerArgumentsForIndexStoreUpdate(
|
||
buildSettings.compilerArguments,
|
||
fileToIndex: uri
|
||
)
|
||
|
||
try await runIndexingProcess(
|
||
indexFile: uri,
|
||
buildSettings: buildSettings,
|
||
processArguments: [clang.pathString] + indexingArguments,
|
||
workingDirectory: buildSettings.workingDirectory.map(AbsolutePath.init(validating:))
|
||
)
|
||
}
|
||
|
||
private func runIndexingProcess(
|
||
indexFile: DocumentURI,
|
||
buildSettings: FileBuildSettings,
|
||
processArguments: [String],
|
||
workingDirectory: AbsolutePath?
|
||
) async throws {
|
||
if Task.isCancelled {
|
||
return
|
||
}
|
||
let start = ContinuousClock.now
|
||
let signposter = Logger(subsystem: LoggingScope.subsystem, category: "indexing").makeSignposter()
|
||
let signpostID = signposter.makeSignpostID()
|
||
let state = signposter.beginInterval(
|
||
"Indexing",
|
||
id: signpostID,
|
||
"Indexing \(indexFile.fileURL?.lastPathComponent ?? indexFile.pseudoPath)"
|
||
)
|
||
defer {
|
||
signposter.endInterval("Indexing", state)
|
||
}
|
||
let logID = IndexTaskID.updateIndexStore(id: id)
|
||
logMessageToIndexLog(
|
||
logID,
|
||
"""
|
||
Indexing \(indexFile.pseudoPath)
|
||
\(processArguments.joined(separator: " "))
|
||
"""
|
||
)
|
||
|
||
let stdoutHandler = PipeAsStringHandler { logMessageToIndexLog(logID, $0) }
|
||
let stderrHandler = PipeAsStringHandler { logMessageToIndexLog(logID, $0) }
|
||
|
||
let result: ProcessResult
|
||
do {
|
||
result = try await withTimeout(timeout) {
|
||
try await Process.run(
|
||
arguments: processArguments,
|
||
workingDirectory: workingDirectory,
|
||
outputRedirection: .stream(
|
||
stdout: { stdoutHandler.handleDataFromPipe(Data($0)) },
|
||
stderr: { stderrHandler.handleDataFromPipe(Data($0)) }
|
||
)
|
||
)
|
||
}
|
||
} catch {
|
||
logMessageToIndexLog(logID, "Finished error in \(start.duration(to: .now)): \(error)")
|
||
throw error
|
||
}
|
||
let exitStatus = result.exitStatus.exhaustivelySwitchable
|
||
logMessageToIndexLog(logID, "Finished with \(exitStatus.description) in \(start.duration(to: .now))")
|
||
switch exitStatus {
|
||
case .terminated(code: 0):
|
||
break
|
||
case .terminated(code: let code):
|
||
// This most likely happens if there are compilation errors in the source file. This is nothing to worry about.
|
||
let stdout = (try? String(bytes: result.output.get(), encoding: .utf8)) ?? "<failed to decode stdout>"
|
||
let stderr = (try? String(bytes: result.stderrOutput.get(), encoding: .utf8)) ?? "<failed to decode stderr>"
|
||
// Indexing will frequently fail if the source code is in an invalid state. Thus, log the failure at a low level.
|
||
logger.debug(
|
||
"""
|
||
Updating index store for \(indexFile.forLogging) terminated with non-zero exit code \(code)
|
||
Stderr:
|
||
\(stderr)
|
||
Stdout:
|
||
\(stdout)
|
||
"""
|
||
)
|
||
BuildSettingsLogger.log(level: .debug, settings: buildSettings, for: indexFile)
|
||
case .signalled(signal: let signal):
|
||
if !Task.isCancelled {
|
||
// The indexing job finished with a signal. Could be because the compiler crashed.
|
||
// Ignore signal exit codes if this task has been cancelled because the compiler exits with SIGINT if it gets
|
||
// interrupted.
|
||
logger.error("Updating index store for \(indexFile.forLogging) signaled \(signal)")
|
||
BuildSettingsLogger.log(level: .error, settings: buildSettings, for: indexFile)
|
||
}
|
||
case .abnormal(exception: let exception):
|
||
if !Task.isCancelled {
|
||
logger.error("Updating index store for \(indexFile.forLogging) exited abnormally \(exception)")
|
||
BuildSettingsLogger.log(level: .error, settings: buildSettings, for: indexFile)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Adjust compiler arguments that were created for building to compiler arguments that should be used for indexing.
|
||
///
|
||
/// This removes compiler arguments that produce output files and adds arguments to index the file.
|
||
private func adjustSwiftCompilerArgumentsForIndexStoreUpdate(
|
||
_ compilerArguments: [String],
|
||
fileToIndex: DocumentURI
|
||
) -> [String] {
|
||
let optionsToRemove: [CompilerCommandLineOption] = [
|
||
.flag("c", [.singleDash]),
|
||
.flag("disable-cmo", [.singleDash]),
|
||
.flag("emit-dependencies", [.singleDash]),
|
||
.flag("emit-module-interface", [.singleDash]),
|
||
.flag("emit-module", [.singleDash]),
|
||
.flag("emit-objc-header", [.singleDash]),
|
||
.flag("incremental", [.singleDash]),
|
||
.flag("no-color-diagnostics", [.singleDash]),
|
||
.flag("parseable-output", [.singleDash]),
|
||
.flag("save-temps", [.singleDash]),
|
||
.flag("serialize-diagnostics", [.singleDash]),
|
||
.flag("use-frontend-parseable-output", [.singleDash]),
|
||
.flag("validate-clang-modules-once", [.singleDash]),
|
||
.flag("whole-module-optimization", [.singleDash]),
|
||
|
||
.option("clang-build-session-file", [.singleDash], [.separatedBySpace]),
|
||
.option("emit-module-interface-path", [.singleDash], [.separatedBySpace]),
|
||
.option("emit-module-path", [.singleDash], [.separatedBySpace]),
|
||
.option("emit-objc-header-path", [.singleDash], [.separatedBySpace]),
|
||
.option("emit-package-module-interface-path", [.singleDash], [.separatedBySpace]),
|
||
.option("emit-private-module-interface-path", [.singleDash], [.separatedBySpace]),
|
||
.option("num-threads", [.singleDash], [.separatedBySpace]),
|
||
// Technically, `-o` and the output file don't need to be separated by a space. Eg. `swiftc -oa file.swift` is
|
||
// valid and will write to an output file named `a`.
|
||
// We can't support that because the only way to know that `-output-file-map` is a different flag and not an option
|
||
// to write to an output file named `utput-file-map` is to know all compiler arguments of `swiftc`, which we don't.
|
||
.option("o", [.singleDash], [.separatedBySpace]),
|
||
.option("output-file-map", [.singleDash], [.separatedBySpace, .separatedByEqualSign]),
|
||
]
|
||
|
||
var result: [String] = []
|
||
result.reserveCapacity(compilerArguments.count)
|
||
var iterator = compilerArguments.makeIterator()
|
||
while let argument = iterator.next() {
|
||
switch optionsToRemove.firstMatch(for: argument) {
|
||
case .removeOption:
|
||
continue
|
||
case .removeOptionAndNextArgument:
|
||
_ = iterator.next()
|
||
continue
|
||
case nil:
|
||
break
|
||
}
|
||
result.append(argument)
|
||
}
|
||
result += supplementalClangIndexingArgs.flatMap { ["-Xcc", $0] }
|
||
result += [
|
||
// Preparation produces modules with errors. We should allow reading them.
|
||
"-Xfrontend", "-experimental-allow-module-with-compiler-errors",
|
||
// Avoid emitting the ABI descriptor, we don't need it
|
||
"-Xfrontend", "-empty-abi-descriptor",
|
||
"-index-file",
|
||
"-index-file-path", fileToIndex.pseudoPath,
|
||
// batch mode is not compatible with -index-file
|
||
"-disable-batch-mode",
|
||
// Fake an output path so that we get a different unit file for every Swift file we background index
|
||
"-index-unit-output-path", fileToIndex.pseudoPath + ".o",
|
||
]
|
||
return result
|
||
}
|
||
|
||
/// Adjust compiler arguments that were created for building to compiler arguments that should be used for indexing.
|
||
///
|
||
/// This removes compiler arguments that produce output files and adds arguments to index the file.
|
||
private func adjustClangCompilerArgumentsForIndexStoreUpdate(
|
||
_ compilerArguments: [String],
|
||
fileToIndex: DocumentURI
|
||
) -> [String] {
|
||
let optionsToRemove: [CompilerCommandLineOption] = [
|
||
// Disable writing of a depfile
|
||
.flag("M", [.singleDash]),
|
||
.flag("MD", [.singleDash]),
|
||
.flag("MMD", [.singleDash]),
|
||
.flag("MG", [.singleDash]),
|
||
.flag("MM", [.singleDash]),
|
||
.flag("MV", [.singleDash]),
|
||
// Don't create phony targets
|
||
.flag("MP", [.singleDash]),
|
||
// Don't write out compilation databases
|
||
.flag("MJ", [.singleDash]),
|
||
// Don't compile
|
||
.flag("c", [.singleDash]),
|
||
|
||
.flag("fmodules-validate-once-per-build-session", [.singleDash]),
|
||
|
||
// Disable writing of a depfile
|
||
.option("MT", [.singleDash], [.noSpace, .separatedBySpace]),
|
||
.option("MF", [.singleDash], [.noSpace, .separatedBySpace]),
|
||
.option("MQ", [.singleDash], [.noSpace, .separatedBySpace]),
|
||
|
||
// Don't write serialized diagnostic files
|
||
.option("serialize-diagnostics", [.singleDash, .doubleDash], [.separatedBySpace]),
|
||
|
||
.option("fbuild-session-file", [.singleDash], [.separatedByEqualSign]),
|
||
]
|
||
|
||
var result: [String] = []
|
||
result.reserveCapacity(compilerArguments.count)
|
||
var iterator = compilerArguments.makeIterator()
|
||
while let argument = iterator.next() {
|
||
switch optionsToRemove.firstMatch(for: argument) {
|
||
case .removeOption:
|
||
continue
|
||
case .removeOptionAndNextArgument:
|
||
_ = iterator.next()
|
||
continue
|
||
case nil:
|
||
break
|
||
}
|
||
result.append(argument)
|
||
}
|
||
result += supplementalClangIndexingArgs
|
||
result.append(
|
||
"-fsyntax-only"
|
||
)
|
||
return result
|
||
}
|
||
|
||
#if compiler(>=6.1)
|
||
#warning(
|
||
"Remove -fmodules-validate-system-headers from supplementalClangIndexingArgs once all supported Swift compilers have https://github.com/apple/swift/pull/74063"
|
||
)
|
||
#endif
|
||
|
||
fileprivate let supplementalClangIndexingArgs: [String] = [
|
||
// Retain extra information for indexing
|
||
"-fretain-comments-from-system-headers",
|
||
// Pick up macro definitions during indexing
|
||
"-Xclang", "-detailed-preprocessing-record",
|
||
|
||
// libclang uses 'raw' module-format. Match it so we can reuse the module cache and PCHs that libclang uses.
|
||
"-Xclang", "-fmodule-format=raw",
|
||
|
||
// Be less strict - we want to continue and typecheck/index as much as possible
|
||
"-Xclang", "-fallow-pch-with-compiler-errors",
|
||
"-Xclang", "-fallow-pcm-with-compiler-errors",
|
||
"-Wno-non-modular-include-in-framework-module",
|
||
"-Wno-incomplete-umbrella",
|
||
|
||
// sourcekitd adds `-fno-modules-validate-system-headers` before https://github.com/apple/swift/pull/74063.
|
||
// This completely disables system module validation and never re-builds pcm for system modules. The intended behavior
|
||
// is to only re-build those PCMs once per sourcekitd session.
|
||
"-fmodules-validate-system-headers",
|
||
]
|
||
|
||
fileprivate extension Sequence {
|
||
/// Returns `true` if this sequence contains an element that is equal to an element in `otherSequence` when
|
||
/// considering two elements as equal if they satisfy `predicate`.
|
||
func hasIntersection(
|
||
with otherSequence: some Sequence<Element>,
|
||
where predicate: (Element, Element) -> Bool
|
||
) -> Bool {
|
||
for outer in self {
|
||
for inner in otherSequence {
|
||
if predicate(outer, inner) {
|
||
return true
|
||
}
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
}
|