Remove trailing whitespaces

Sources/SwiftDriver/Driver/Driver.swift

@@ -46,7 +46,7 @@ public struct Driver {
     case subcommandPassedToDriver
     case relativeFrontendPath(String)
   }
-  
+
   /// The set of environment variables that are visible to the driver and
   /// processes it launches. This is a hook for testing; in actual use
   /// it should be identical to the real environment.
@@ -441,7 +441,7 @@ extension Driver {
     var isEscaping = false
     // Indicates if we are currently parsing quoted text.
     var quoted = false
-    
+
     for char in line {
       // Backslash escapes to the next character.
       if char == #"\"#, !isEscaping {
@@ -480,7 +480,7 @@ extension Driver {
     return content.split { $0 == "\n" || $0 == "\r\n" }
            .flatMap { tokenizeResponseFileLine($0) }
   }
-  
+
   /// Recursively expands the response files.
   /// - Parameter visitedResponseFiles: Set containing visited response files to detect recursive parsing.
   private static func expandResponseFiles(
@@ -1251,7 +1251,7 @@ extension Driver {
       // This value will fail the isSwiftIdentifier test below.
       moduleName = ""
     }
-    
+
     func fallbackOrDiagnose(_ error: Diagnostic.Message) {
       // FIXME: Current driver notes that this is a "fallback module name".
       if compilerOutputType == nil || maybeBuildingExecutable(&parsedOptions, linkerOutputType: linkerOutputType) {
@@ -1330,7 +1330,7 @@ extension Driver {
         sdkPath = try? toolchain.defaultSDKPath()?.pathString
       }
     }
-    
+
     // An empty string explicitly clears the SDK.
     if sdkPath == "" {
       sdkPath = nil
@@ -1445,7 +1445,7 @@ extension Driver {
   #else
   static let defaultToolchainType: Toolchain.Type = GenericUnixToolchain.self
   #endif
-  
+
   static func computeToolchain(
     _ explicitTarget: Triple?,
     diagnosticsEngine: DiagnosticsEngine,

Sources/SwiftDriver/Driver/DriverKind.swift

@@ -70,7 +70,7 @@ extension DriverKind {
       return "Swift Module Wrapper"
     }
   }
-  
+
   public var seeAlsoHelpMessage: String? {
     switch self {
     case .interactive:

Sources/SwiftDriver/Execution/JobExecutor.swift

@@ -119,7 +119,7 @@ public final class JobExecutor {
 
     /// The resolver for argument template.
     let argsResolver: ArgsResolver
-    
+
     /// The environment variables.
     let env: [String: String]
 

Sources/SwiftDriver/Jobs/DarwinToolchain+LinkerSupport.swift

@@ -116,9 +116,9 @@ extension DarwinToolchain {
     targetTriple: Triple
   ) {
     // FIXME: Properly handle deployment targets.
-    
+
     let flag: String
-    
+
     switch targetTriple.darwinPlatform! {
     case .iOS(.device):
       flag = "-iphoneos_version_min"
@@ -135,11 +135,11 @@ extension DarwinToolchain {
     case .watchOS(.simulator):
       flag = "-watchos_simulator_version_min"
     }
-    
+
     commandLine.appendFlag(flag)
     commandLine.appendFlag(targetTriple.version().description)
   }
-  
+
   private func addArgsToLinkARCLite(
     to commandLine: inout [Job.ArgTemplate],
     parsedOptions: inout ParsedOptions,
@@ -215,7 +215,7 @@ extension DarwinToolchain {
         commandLine.appendFlag(.F)
         commandLine.appendPath(try VirtualPath(path: opt.argument.asSingle))
       }
-      
+
       // Linking sanitizers will add rpaths, which might negatively interact when
       // other rpaths are involved, so we should make sure we add the rpaths after
       // all user-specified rpaths.

Sources/SwiftDriver/Jobs/GeneratePCHJob.swift

@@ -17,14 +17,14 @@ extension Driver {
   mutating func generatePCHJob(input: TypedVirtualPath, output: TypedVirtualPath) throws -> Job {
     var inputs = [TypedVirtualPath]()
     var outputs = [TypedVirtualPath]()
-    
+
     var commandLine: [Job.ArgTemplate] = swiftCompilerPrefixArgs.map { Job.ArgTemplate.flag($0) }
 
     commandLine.appendFlag("-frontend")
-    
+
     try addCommonFrontendOptions(
       commandLine: &commandLine, bridgingHeaderHandling: .parsed)
-    
+
     try commandLine.appendLast(.indexStorePath, from: &parsedOptions)
 
     // TODO: Should this just be pch output with extension changed?
@@ -52,15 +52,15 @@ extension Driver {
     try commandLine.appendLast(.indexStorePath, from: &parsedOptions)
 
     commandLine.appendFlag(.emitPch)
-    
+
     if parsedOptions.hasArgument(.pchOutputDir) {
       try commandLine.appendLast(.pchOutputDir, from: &parsedOptions)
     } else {
       commandLine.appendFlag(.o)
       commandLine.appendPath(output.file)
     }
     outputs.append(output)
-    
+
     return Job(
       kind: .generatePCH,
       tool: .absolute(try toolchain.getToolPath(.swiftCompiler)),

Sources/SwiftDriver/Jobs/Job.swift

@@ -56,7 +56,7 @@ public struct Job: Codable, Equatable, Hashable {
 
   /// The outputs produced by the job.
   public var outputs: [TypedVirtualPath]
-  
+
   /// Any extra environment variables which should be set while running the job.
   public var extraEnvironment: [String: String]
 

Sources/SwiftDriver/Jobs/Toolchain+LinkerSupport.swift

@@ -172,7 +172,7 @@ extension DarwinToolchain {
         commandLine.appendFlag(.L)
         commandLine.appendPath(path)
       }
-      
+
       let rpaths = StdlibRpathRule(
         parsedOptions: &parsedOptions,
         targetTriple: targetTriple
@@ -182,21 +182,21 @@ extension DarwinToolchain {
         commandLine.appendPath(path)
       }
     }
-  
+
   /// Represents the rpaths we need to add in order to find the
   /// desired standard library at runtime.
   fileprivate enum StdlibRpathRule {
     /// Add a set of rpaths that will allow the compiler resource directory
     /// to override Swift-in-the-OS dylibs.
     case toolchain
-    
+
     /// Add an rpath that will search Swift-in-the-OS dylibs, but not
     /// compiler resource directory dylibs.
     case os
 
     /// Do not add any rpaths at all.
     case none
-    
+
     /// Determines the appropriate rule for the
     init(parsedOptions: inout ParsedOptions, targetTriple: Triple) {
       if parsedOptions.hasFlag(
@@ -244,7 +244,7 @@ extension DarwinToolchain {
         self = .os
       }
     }
-    
+
     func paths(runtimeLibraryPaths: [AbsolutePath]) -> [AbsolutePath] {
       switch self {
       case .toolchain:

Sources/SwiftDriver/Options/Option.swift

@@ -12,7 +12,7 @@
 /// Attributes that describe where and how the option is used.
 public struct OptionAttributes: OptionSet, Hashable {
   public let rawValue: UInt
-  
+
   public init(rawValue: UInt) {
     self.rawValue = rawValue
   }

Sources/SwiftDriver/Options/OptionTable.swift

@@ -63,7 +63,7 @@ extension OptionTable {
         let rightPadding = String(
           repeating: " ",
           count: maxDisplayNameLength - displayName.count)
-        
+
         print("  \(displayName)\(rightPadding) \(helpText)")
       } else {
         print("  \(displayName)")

Sources/SwiftDriver/Toolchains/DarwinToolchain.swift

@@ -19,11 +19,11 @@ public final class DarwinToolchain: Toolchain {
 
   /// Doubles as path cache and point for overriding normal lookup
   private var toolPaths = [Tool: AbsolutePath]()
-  
+
   public init(env: [String: String]) {
     self.env = env
   }
-  
+
   /// Retrieve the absolute path for a given tool.
   public func getToolPath(_ tool: Tool) throws -> AbsolutePath {
     // Check the cache

Sources/SwiftDriver/Toolchains/Toolchain.swift

@@ -27,11 +27,11 @@ public enum Tool {
 /// and other tools required to build Swift code.
 public protocol Toolchain {
   init(env: [String: String])
-  
+
   var env: [String: String] { get }
-  
+
   var searchPaths: [AbsolutePath] { get }
-  
+
   /// Retrieve the absolute path to a particular tool.
   func getToolPath(_ tool: Tool) throws -> AbsolutePath
 
@@ -76,14 +76,14 @@ extension Toolchain {
   public var searchPaths: [AbsolutePath] {
     getEnvSearchPaths(pathString: env["PATH"], currentWorkingDirectory: localFileSystem.currentWorkingDirectory)
   }
-  
+
   public func swiftCompilerVersion() throws -> String {
     try Process.checkNonZeroExit(
       args: getToolPath(.swiftCompiler).pathString, "-version",
       environment: env
     ).split(separator: "\n").first.map(String.init) ?? ""
   }
-  
+
   /// Returns the target triple string for the current host.
   public func hostTargetTriple() throws -> Triple {
     let triple = try Process.checkNonZeroExit(
@@ -92,34 +92,34 @@ extension Toolchain {
     ).spm_chomp()
     return Triple(triple)
   }
-  
+
   /// Returns the `executablePath`'s directory.
   public var executableDir: AbsolutePath {
     guard let path = Bundle.main.executablePath else {
       fatalError("Could not find executable path.")
     }
     return AbsolutePath(path).parentDirectory
   }
-  
+
   /// Looks for `SWIFT_DRIVER_TOOLNAME_EXEC` in the `env` property.
   /// - Returns: Environment variable value, if any.
   func envVar(forExecutable toolName: String) -> String? {
     return env[envVarName(for: toolName)]
   }
-  
+
   /// - Returns: String in the form of: `SWIFT_DRIVER_TOOLNAME_EXEC`
   private func envVarName(for toolName: String) -> String {
     return "SWIFT_DRIVER_\(toolName.uppercased())_EXEC"
   }
-  
+
   /// Use this property only for testing purposes, for example,
   /// to enable cross-compiling tests that depends on macOS tooling such as `dsymutil`.
   ///
   /// Returns true if `SWIFT_DRIVER_TESTS_ENABLE_EXEC_PATH_FALLBACK` is set to `1`.
   private var fallbackToExecutableDefaultPath: Bool {
     env["SWIFT_DRIVER_TESTS_ENABLE_EXEC_PATH_FALLBACK"] == "1"
   }
-  
+
   /// Looks for the executable in the `SWIFT_DRIVER_TOOLNAME_EXEC` environment variable, if found nothing,
   /// looks in the `executableDir`, `xcrunFind` or in the `searchPaths`.
   /// - Parameter executable: executable to look for [i.e. `swift`].
@@ -138,13 +138,13 @@ extension Toolchain {
       throw ToolchainError.unableToFind(tool: executable)
     }
   }
-  
+
   private func xcrunFind(executable: String) throws -> AbsolutePath {
     let xcrun = "xcrun"
     guard lookupExecutablePath(filename: xcrun, searchPaths: searchPaths) != nil else {
       throw ToolchainError.unableToFind(tool: xcrun)
     }
-    
+
     let path = try Process.checkNonZeroExit(
       arguments: [xcrun, "-sdk", "macosx", "--find", executable],
       environment: env

Sources/SwiftDriver/Utilities/PredictableRandomNumberGenerator.swift

@@ -28,7 +28,7 @@ public struct PredictableRandomNumberGenerator: RandomNumberGenerator {
       z = (z ^ (z &>> 27)) &* 0x94d049bb133111eb
       return z ^ (z &>> 31)
     }
-    
+
     var initState = seed
     state = (initNext(&initState), initNext(&initState),
              initNext(&initState), initNext(&initState))

Sources/SwiftDriver/Utilities/RelativePathAdditions.swift

@@ -22,7 +22,7 @@ extension RelativePath {
 
     return basename
   }
-  
+
   /// Retrieve the basename of the relative path without any extensions,
   /// even if there are several, and without any leading dots. Roughly
   /// equivalent to the regex `/[^.]+/`.
@@ -42,12 +42,12 @@ extension AbsolutePath {
 
 fileprivate func firstBasename(of name: String) -> String {
   var copy = name[...]
-  
+
   // Remove leading dots, as in dotfiles.
   if let i = copy.firstIndex(where: { $0 != "." }) {
     copy.removeSubrange(..<i)
   }
-  
+
   // Truncate at the first (obviously non-leading) dot.
   if let i = copy.firstIndex(of: ".") {
     copy.removeSubrange(i...)