mcs/mcs/settings.cs

   1 //
   2 // settings.cs: All compiler settings
   3 //
   4 // Author: Miguel de Icaza (miguel@ximian.com)
   5 //            Ravi Pratap  (ravi@ximian.com)
   6 //            Marek Safar  (marek.safar@gmail.com)
   7 //
   8 //
   9 // Dual licensed under the terms of the MIT X11 or GNU GPL
  10 //
  11 // Copyright 2001 Ximian, Inc (http://www.ximian.com)
  12 // Copyright 2004-2008 Novell, Inc
  13 // Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  14 //
  15
  16 using System.Collections.Generic;
  17 using System.IO;
  18 using System.Text;
  19 using System.Globalization;
  20 using System;
  21
  22 namespace Mono.CSharp {
  23
  24         public enum LanguageVersion
  25         {
  26                 ISO_1 = 1,
  27                 ISO_2 = 2,
  28                 V_3 = 3,
  29                 V_4 = 4,
  30                 V_5 = 5,
  31                 V_6 = 6,
  32                 V_7 = 7,
  33                 V_7_1 = 71,
  34                 V_7_2 = 72,
  35                 Experimental = 100,
  36
  37                 Default = V_7,
  38                 Latest = V_7_2
  39         }
  40
  41         public enum RuntimeVersion
  42         {
  43                 v1,
  44                 v2,
  45                 v4
  46         }
  47
  48         public enum Target
  49         {
  50                 Library, Exe, Module, WinExe
  51         }
  52
  53         public enum Platform
  54         {
  55                 AnyCPU,
  56                 AnyCPU32Preferred,
  57                 Arm,
  58                 X86,
  59                 X64,
  60                 IA64
  61         }
  62
  63         public class CompilerSettings
  64         {
  65                 public Target Target;
  66                 public Platform Platform;
  67                 public string TargetExt;
  68                 public bool VerifyClsCompliance;
  69                 public bool Optimize;
  70                 public LanguageVersion Version;
  71                 public bool EnhancedWarnings;
  72                 public bool LoadDefaultReferences;
  73                 public string SdkVersion;
  74
  75                 public string StrongNameKeyFile;
  76                 public string StrongNameKeyContainer;
  77                 public bool StrongNameDelaySign;
  78
  79                 public int TabSize;
  80
  81                 public bool WarningsAreErrors;
  82                 public int WarningLevel;
  83
  84                 //
  85                 // Assemblies references to be loaded
  86                 //
  87                 public List<string> AssemblyReferences;
  88
  89                 //
  90                 // External aliases for assemblies
  91                 //
  92                 public List<Tuple<string, string>> AssemblyReferencesAliases;
  93
  94                 public List<KeyValuePair<string, string>> PathMap;
  95
  96                 //
  97                 // Modules to be embedded
  98                 //
  99                 public List<string> Modules;
 100
 101                 //
 102                 // Lookup paths for referenced assemblies
 103                 //
 104                 public List<string> ReferencesLookupPaths;
 105
 106                 //
 107                 // Encoding.
 108                 //
 109                 public Encoding Encoding;
 110
 111                 //
 112                 // If set, enable XML documentation generation
 113                 //
 114                 public string DocumentationFile;
 115
 116                 public string MainClass;
 117
 118                 //
 119                 // Output file
 120                 //
 121                 public string OutputFile;
 122
 123                 //
 124                 // The default compiler checked state
 125                 //
 126                 public bool Checked;
 127
 128                 //
 129                 // If true, the compiler is operating in statement mode,
 130                 // this currently turns local variable declaration into
 131                 // static variables of a class
 132                 //
 133                 public bool StatementMode;      // TODO: SUPER UGLY
 134
 135                 //
 136                 // Whether to allow Unsafe code
 137                 //
 138                 public bool Unsafe;
 139
 140                 public string Win32ResourceFile;
 141                 public string Win32IconFile;
 142
 143                 //
 144                 // A list of resource files for embedding
 145                 //
 146                 public List<AssemblyResource> Resources;
 147
 148                 public bool GenerateDebugInfo;
 149
 150                 #region Compiler debug flags only
 151                 public bool ParseOnly, TokenizeOnly, Timestamps;
 152                 public int DebugFlags;
 153                 public int VerboseParserFlag;
 154                 public int FatalCounter;
 155                 public bool Stacktrace;
 156                 public bool BreakOnInternalError;
 157                 #endregion
 158
 159                 public List<string> GetResourceStrings;
 160
 161                 public bool ShowFullPaths;
 162
 163                 //
 164                 // Whether we are being linked against the standard libraries.
 165                 // This is only used to tell whether `System.Object' should
 166                 // have a base class or not.
 167                 //
 168                 public bool StdLib;
 169
 170                 public RuntimeVersion StdLibRuntimeVersion;
 171
 172                 public string RuntimeMetadataVersion;
 173
 174                 public bool WriteMetadataOnly;
 175
 176                 readonly List<string> conditional_symbols;
 177
 178                 readonly List<SourceFile> source_files;
 179
 180                 List<int> warnings_as_error;
 181                 List<int> warnings_only;
 182                 HashSet<int> warning_ignore_table;
 183
 184                 public CompilerSettings ()
 185                 {
 186                         StdLib = true;
 187                         Target = Target.Exe;
 188                         TargetExt = ".exe";
 189                         Platform = Platform.AnyCPU;
 190                         Version = LanguageVersion.Default;
 191                         VerifyClsCompliance = true;
 192                         Encoding = Encoding.UTF8;
 193                         LoadDefaultReferences = true;
 194                         StdLibRuntimeVersion = RuntimeVersion.v4;
 195                         WarningLevel = 4;
 196
 197                         // Default to 1 or mdb files would be platform speficic
 198                         TabSize = 1;
 199
 200                         AssemblyReferences = new List<string> ();
 201                         AssemblyReferencesAliases = new List<Tuple<string, string>> ();
 202                         Modules = new List<string> ();
 203                         ReferencesLookupPaths = new List<string> ();
 204
 205                         conditional_symbols = new List<string> ();
 206                         //
 207                         // Add default mcs define
 208                         //
 209                         conditional_symbols.Add ("__MonoCS__");
 210
 211                         source_files = new List<SourceFile> ();
 212                 }
 213
 214                 #region Properties
 215
 216                 public SourceFile FirstSourceFile {
 217                         get {
 218                                 return source_files.Count > 0 ? source_files [0] : null;
 219                         }
 220                 }
 221
 222                 public bool HasKeyFileOrContainer {
 223                         get {
 224                                 return StrongNameKeyFile != null || StrongNameKeyContainer != null;
 225                         }
 226                 }
 227
 228                 public bool NeedsEntryPoint {
 229                         get {
 230                                 return Target == Target.Exe || Target == Target.WinExe;
 231                         }
 232                 }
 233
 234                 public List<SourceFile> SourceFiles {
 235                         get {
 236                                 return source_files;
 237                         }
 238                 }
 239
 240                 #endregion
 241
 242                 public void AddConditionalSymbol (string symbol)
 243                 {
 244                         if (!conditional_symbols.Contains (symbol))
 245                                 conditional_symbols.Add (symbol);
 246                 }
 247
 248                 public void AddWarningAsError (int id)
 249                 {
 250                         if (warnings_as_error == null)
 251                                 warnings_as_error = new List<int> ();
 252
 253                         warnings_as_error.Add (id);
 254                 }
 255
 256                 public void AddWarningOnly (int id)
 257                 {
 258                         if (warnings_only == null)
 259                                 warnings_only = new List<int> ();
 260
 261                         warnings_only.Add (id);
 262                 }
 263
 264                 public bool IsConditionalSymbolDefined (string symbol)
 265                 {
 266                         return conditional_symbols.Contains (symbol);
 267                 }
 268
 269                 public bool IsWarningAsError (int code)
 270                 {
 271                         bool is_error = WarningsAreErrors;
 272
 273                         // Check specific list
 274                         if (warnings_as_error != null)
 275                                 is_error |= warnings_as_error.Contains (code);
 276
 277                         // Ignore excluded warnings
 278                         if (warnings_only != null && warnings_only.Contains (code))
 279                                 is_error = false;
 280
 281                         return is_error;
 282                 }
 283
 284                 public bool IsWarningEnabled (int code, int level)
 285                 {
 286                         if (WarningLevel < level)
 287                                 return false;
 288
 289                         return !IsWarningDisabledGlobally (code);
 290                 }
 291
 292                 public bool IsWarningDisabledGlobally (int code)
 293                 {
 294                         return warning_ignore_table != null && warning_ignore_table.Contains (code);
 295                 }
 296
 297                 public void SetIgnoreWarning (int code)
 298                 {
 299                         if (warning_ignore_table == null)
 300                                 warning_ignore_table = new HashSet<int> ();
 301
 302                         warning_ignore_table.Add (code);
 303                 }
 304         }
 305
 306         public class CommandLineParser
 307         {
 308                 enum ParseResult
 309                 {
 310                         Success,
 311                         Error,
 312                         Stop,
 313                         UnknownOption
 314                 }
 315
 316                 static readonly char[] argument_value_separator = { ';', ',' };
 317                 static readonly char[] numeric_value_separator = { ';', ',', ' ' };
 318
 319                 readonly TextWriter output;
 320                 readonly Report report;
 321                 bool stop_argument;
 322
 323                 Dictionary<string, int> source_file_index;
 324
 325                 public event Func<string[], int, int> UnknownOptionHandler;
 326
 327                 CompilerSettings parser_settings;
 328
 329                 public CommandLineParser (TextWriter errorOutput)
 330                         : this (errorOutput, Console.Out)
 331                 {
 332                 }
 333
 334                 public CommandLineParser (TextWriter errorOutput, TextWriter messagesOutput)
 335                 {
 336                         var rp = new StreamReportPrinter (errorOutput);
 337
 338                         parser_settings = new CompilerSettings ();
 339                         report = new Report (new CompilerContext (parser_settings, rp), rp);
 340                         this.output = messagesOutput;
 341                 }
 342
 343                 public bool HasBeenStopped {
 344                         get {
 345                                 return stop_argument;
 346                         }
 347                 }
 348
 349                 void About ()
 350                 {
 351                         output.WriteLine (
 352                                 "The Turbo C# compiler is Copyright 2001-2011, Novell, Inc. 2011-2016 Xamarin Inc, 2016-2017 Microsoft Corp\n\n" +
 353                                 "The compiler source code is released under the terms of the \n" +
 354                                 "MIT X11 or GNU GPL licenses\n\n" +
 355
 356                                 "For more information on Mono, visit the project Web site\n" +
 357                                 "   http://www.mono-project.com\n\n" +
 358
 359                                 "The compiler was written by Miguel de Icaza, Ravi Pratap, Martin Baulig, Marek Safar, Raja R Harinath, Atushi Enomoto");
 360                 }
 361
 362                 public CompilerSettings ParseArguments (string[] args)
 363                 {
 364                         CompilerSettings settings = new CompilerSettings ();
 365                         if (!ParseArguments (settings, args))
 366                                 return null;
 367
 368                         return settings;
 369                 }
 370
 371                 public bool ParseArguments (CompilerSettings settings, string[] args)
 372                 {
 373                         if (settings == null)
 374                                 throw new ArgumentNullException ("settings");
 375
 376                         List<string> response_file_list = null;
 377                         bool parsing_options = true;
 378                         stop_argument = false;
 379                         source_file_index = new Dictionary<string, int> ();
 380
 381                         for (int i = 0; i < args.Length; i++) {
 382                                 string arg = args[i];
 383                                 if (arg.Length == 0)
 384                                         continue;
 385
 386                                 if (arg[0] == '@') {
 387                                         string[] extra_args;
 388                                         string response_file = arg.Substring (1);
 389
 390                                         if (response_file_list == null)
 391                                                 response_file_list = new List<string> ();
 392
 393                                         if (response_file_list.Contains (response_file)) {
 394                                                 report.Error (1515, "Response file `{0}' specified multiple times", response_file);
 395                                                 return false;
 396                                         }
 397
 398                                         response_file_list.Add (response_file);
 399
 400                                         extra_args = LoadArgs (response_file);
 401                                         if (extra_args == null) {
 402                                                 report.Error (2011, "Unable to open response file: " + response_file);
 403                                                 return false;
 404                                         }
 405
 406                                         args = AddArgs (args, extra_args);
 407                                         continue;
 408                                 }
 409
 410                                 if (parsing_options) {
 411                                         if (arg == "--") {
 412                                                 parsing_options = false;
 413                                                 continue;
 414                                         }
 415
 416                                         bool dash_opt = arg[0] == '-';
 417                                         bool slash_opt = arg[0] == '/';
 418                                         if (dash_opt) {
 419                                                 switch (ParseOptionUnix (arg, ref args, ref i, settings)) {
 420                                                 case ParseResult.Error:
 421                                                 case ParseResult.Success:
 422                                                         continue;
 423                                                 case ParseResult.Stop:
 424                                                         stop_argument = true;
 425                                                         return true;
 426                                                 case ParseResult.UnknownOption:
 427                                                         if (UnknownOptionHandler != null) {
 428                                                                 var ret = UnknownOptionHandler (args, i);
 429                                                                 if (ret != -1) {
 430                                                                         i = ret;
 431                                                                         continue;
 432                                                                 }
 433                                                         }
 434                                                         break;
 435                                                 }
 436                                         }
 437
 438                                         if (dash_opt || slash_opt) {
 439                                                 // Try a -CSCOPTION
 440                                                 string csc_opt = dash_opt ? "/" + arg.Substring (1) : arg;
 441                                                 switch (ParseOption (csc_opt, ref args, settings)) {
 442                                                 case ParseResult.Error:
 443                                                 case ParseResult.Success:
 444                                                         continue;
 445                                                 case ParseResult.UnknownOption:
 446                                                         // Need to skip `/home/test.cs' however /test.cs is considered as error
 447                                                         if ((slash_opt && arg.Length > 3 && arg.IndexOf ('/', 2) > 0))
 448                                                                 break;
 449
 450                                                         if (UnknownOptionHandler != null) {
 451                                                                 var ret = UnknownOptionHandler (args, i);
 452                                                                 if (ret != -1) {
 453                                                                         i = ret;
 454                                                                         continue;
 455                                                                 }
 456                                                         }
 457
 458                                                         Error_WrongOption (arg);
 459                                                         return false;
 460
 461                                                 case ParseResult.Stop:
 462                                                         stop_argument = true;
 463                                                         return true;
 464                                                 }
 465                                         }
 466                                 }
 467
 468                                 ProcessSourceFiles (arg, false, settings.SourceFiles);
 469                         }
 470
 471                         return report.Errors == 0;
 472                 }
 473
 474                 void ProcessSourceFiles (string spec, bool recurse, List<SourceFile> sourceFiles)
 475                 {
 476                         string path, pattern;
 477
 478                         SplitPathAndPattern (spec, out path, out pattern);
 479                         if (pattern.IndexOf ('*') == -1) {
 480                                 AddSourceFile (spec, sourceFiles);
 481                                 return;
 482                         }
 483
 484                         string[] files;
 485                         try {
 486                                 files = Directory.GetFiles (path, pattern);
 487                         } catch (System.IO.DirectoryNotFoundException) {
 488                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 489                                 return;
 490                         } catch (System.IO.IOException) {
 491                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 492                                 return;
 493                         }
 494                         foreach (string f in files) {
 495                                 AddSourceFile (f, sourceFiles);
 496                         }
 497
 498                         if (!recurse)
 499                                 return;
 500
 501                         string[] dirs = null;
 502
 503                         try {
 504                                 dirs = Directory.GetDirectories (path);
 505                         } catch {
 506                         }
 507
 508                         foreach (string d in dirs) {
 509
 510                                 // Don't include path in this string, as each
 511                                 // directory entry already does
 512                                 ProcessSourceFiles (d + "/" + pattern, true, sourceFiles);
 513                         }
 514                 }
 515
 516                 static string[] AddArgs (string[] args, string[] extra_args)
 517                 {
 518                         string[] new_args;
 519                         new_args = new string[extra_args.Length + args.Length];
 520
 521                         // if args contains '--' we have to take that into account
 522                         // split args into first half and second half based on '--'
 523                         // and add the extra_args before --
 524                         int split_position = Array.IndexOf (args, "--");
 525                         if (split_position != -1) {
 526                                 Array.Copy (args, new_args, split_position);
 527                                 extra_args.CopyTo (new_args, split_position);
 528                                 Array.Copy (args, split_position, new_args, split_position + extra_args.Length, args.Length - split_position);
 529                         } else {
 530                                 args.CopyTo (new_args, 0);
 531                                 extra_args.CopyTo (new_args, args.Length);
 532                         }
 533
 534                         return new_args;
 535                 }
 536
 537                 void AddAssemblyReference (string alias, string assembly, CompilerSettings settings)
 538                 {
 539                         if (assembly.Length == 0) {
 540                                 report.Error (1680, "Invalid reference alias `{0}='. Missing filename", alias);
 541                                 return;
 542                         }
 543
 544                         if (!IsExternAliasValid (alias)) {
 545                                 report.Error (1679, "Invalid extern alias for -reference. Alias `{0}' is not a valid identifier", alias);
 546                                 return;
 547                         }
 548
 549                         settings.AssemblyReferencesAliases.Add (Tuple.Create (alias, assembly));
 550                 }
 551
 552                 void AddResource (AssemblyResource res, CompilerSettings settings)
 553                 {
 554                         if (settings.Resources == null) {
 555                                 settings.Resources = new List<AssemblyResource> ();
 556                                 settings.Resources.Add (res);
 557                                 return;
 558                         }
 559
 560                         if (settings.Resources.Contains (res)) {
 561                                 report.Error (1508, "The resource identifier `{0}' has already been used in this assembly", res.Name);
 562                                 return;
 563                         }
 564
 565                         settings.Resources.Add (res);
 566                 }
 567
 568                 void AddSourceFile (string fileName, List<SourceFile> sourceFiles)
 569                 {
 570                         string path = Path.GetFullPath (fileName);
 571
 572                         int index;
 573                         if (source_file_index.TryGetValue (path, out index)) {
 574                                 string other_name = sourceFiles[index - 1].Name;
 575                                 if (fileName.Equals (other_name))
 576                                         report.Warning (2002, 1, "Source file `{0}' specified multiple times", other_name);
 577                                 else
 578                                         report.Warning (2002, 1, "Source filenames `{0}' and `{1}' both refer to the same file: {2}", fileName, other_name, path);
 579
 580                                 return;
 581                         }
 582
 583                         var unit = new SourceFile (fileName, path, sourceFiles.Count + 1);
 584                         sourceFiles.Add (unit);
 585                         source_file_index.Add (path, unit.Index);
 586                 }
 587
 588                 public bool ProcessWarningsList (string text, Action<int> action)
 589                 {
 590                         foreach (string wid in text.Split (numeric_value_separator, StringSplitOptions.RemoveEmptyEntries)) {
 591                                 var warning = wid;
 592                                 if (warning.Length == 6 && warning [0] == 'C' && warning [1] == 'S')
 593                                         warning = warning.Substring (2);
 594
 595                                 int id;
 596                                 if (!int.TryParse (warning, NumberStyles.AllowLeadingWhite, CultureInfo.InvariantCulture, out id)) {
 597                                         continue;
 598                                 }
 599
 600                                 action (id);
 601                         }
 602
 603                         return true;
 604                 }
 605
 606                 void Error_RequiresArgument (string option)
 607                 {
 608                         report.Error (2006, "Missing argument for `{0}' option", option);
 609                 }
 610
 611                 void Error_RequiresFileName (string option)
 612                 {
 613                         report.Error (2005, "Missing file specification for `{0}' option", option);
 614                 }
 615
 616                 void Error_WrongOption (string option)
 617                 {
 618                         report.Error (2007, "Unrecognized command-line option: `{0}'", option);
 619                 }
 620
 621                 static bool IsExternAliasValid (string identifier)
 622                 {
 623                         return Tokenizer.IsValidIdentifier (identifier);
 624                 }
 625
 626                 static string[] LoadArgs (string file)
 627                 {
 628                         StreamReader f;
 629                         var args = new List<string> ();
 630                         string line;
 631                         try {
 632                                 f = new StreamReader (file);
 633                         } catch {
 634                                 return null;
 635                         }
 636
 637                         StringBuilder sb = new StringBuilder ();
 638
 639                         while ((line = f.ReadLine ()) != null) {
 640                                 int t = line.Length;
 641
 642                                 for (int i = 0; i < t; i++) {
 643                                         char c = line[i];
 644
 645                                         if (c == '"' || c == '\'') {
 646                                                 char end = c;
 647
 648                                                 for (i++; i < t; i++) {
 649                                                         c = line[i];
 650
 651                                                         if (c == end)
 652                                                                 break;
 653                                                         sb.Append (c);
 654                                                 }
 655                                         } else if (c == ' ') {
 656                                                 if (sb.Length > 0) {
 657                                                         args.Add (sb.ToString ());
 658                                                         sb.Length = 0;
 659                                                 }
 660                                         } else
 661                                                 sb.Append (c);
 662                                 }
 663                                 if (sb.Length > 0) {
 664                                         args.Add (sb.ToString ());
 665                                         sb.Length = 0;
 666                                 }
 667                         }
 668
 669                         return args.ToArray ();
 670                 }
 671
 672                 void OtherFlags ()
 673                 {
 674                         output.WriteLine (
 675                                 "Other flags in the compiler\n" +
 676                                 "   --fatal[=COUNT]    Makes error after COUNT fatal\n" +
 677                                 "   --lint             Enhanced warnings\n" +
 678                                 "   --metadata-only    Produced assembly will contain metadata only\n" +
 679                                 "   --parse            Only parses the source file\n" +
 680                                 "   --runtime:VERSION  Sets mscorlib.dll metadata version: v1, v2, v4\n" +
 681                                 "   --stacktrace       Shows stack trace at error location\n" +
 682                                 "   --timestamp        Displays time stamps of various compiler events\n" +
 683                                 "   -v                 Verbose parsing (for debugging the parser)\n" +
 684                                 "   --mcs-debug X      Sets MCS debugging level to X\n" +
 685                                 "   --break-on-ice     Breaks compilation on internal compiler error");
 686                 }
 687
 688                 //
 689                 // This parses the -arg and /arg options to the compiler, even if the strings
 690                 // in the following text use "/arg" on the strings.
 691                 //
 692                 ParseResult ParseOption (string option, ref string[] args, CompilerSettings settings)
 693                 {
 694                         int idx = option.IndexOf (':');
 695                         string arg, value;
 696
 697                         if (idx == -1) {
 698                                 arg = option;
 699                                 value = "";
 700                         } else {
 701                                 arg = option.Substring (0, idx);
 702
 703                                 value = option.Substring (idx + 1);
 704                         }
 705
 706                         switch (arg.ToLowerInvariant ()) {
 707                         case "/nologo":
 708                                 return ParseResult.Success;
 709
 710                         case "/t":
 711                         case "/target":
 712                                 switch (value) {
 713                                 case "exe":
 714                                         settings.Target = Target.Exe;
 715                                         break;
 716
 717                                 case "winexe":
 718                                         settings.Target = Target.WinExe;
 719                                         break;
 720
 721                                 case "library":
 722                                         settings.Target = Target.Library;
 723                                         settings.TargetExt = ".dll";
 724                                         break;
 725
 726                                 case "module":
 727                                         settings.Target = Target.Module;
 728                                         settings.TargetExt = ".netmodule";
 729                                         break;
 730
 731                                 default:
 732                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
 733                                         return ParseResult.Error;
 734                                 }
 735                                 return ParseResult.Success;
 736
 737                         case "/out":
 738                                 if (value.Length == 0) {
 739                                         Error_RequiresFileName (option);
 740                                         return ParseResult.Error;
 741                                 }
 742                                 settings.OutputFile = value;
 743                                 return ParseResult.Success;
 744
 745                         case "/o":
 746                         case "/o+":
 747                         case "/optimize":
 748                         case "/optimize+":
 749                                 settings.Optimize = true;
 750                                 return ParseResult.Success;
 751
 752                         case "/o-":
 753                         case "/optimize-":
 754                                 settings.Optimize = false;
 755                                 return ParseResult.Success;
 756
 757                         // TODO: Not supported by csc 3.5+
 758                         case "/incremental":
 759                         case "/incremental+":
 760                         case "/incremental-":
 761                                 // nothing.
 762                                 return ParseResult.Success;
 763
 764                         case "/d":
 765                         case "/define": {
 766                                         if (value.Length == 0) {
 767                                                 Error_RequiresArgument (option);
 768                                                 return ParseResult.Error;
 769                                         }
 770
 771                                         foreach (string d in value.Split (argument_value_separator)) {
 772                                                 string conditional = d.Trim ();
 773                                                 if (!Tokenizer.IsValidIdentifier (conditional)) {
 774                                                         report.Warning (2029, 1, "Invalid conditional define symbol `{0}'", conditional);
 775                                                         continue;
 776                                                 }
 777
 778                                                 settings.AddConditionalSymbol (conditional);
 779                                         }
 780                                         return ParseResult.Success;
 781                                 }
 782
 783                         case "/bugreport":
 784                                 //
 785                                 // We should collect data, runtime, etc and store in the file specified
 786                                 //
 787                                 output.WriteLine ("To file bug reports, please visit: http://www.mono-project.com/Bugs");
 788                                 return ParseResult.Success;
 789
 790                         case "/pkg": {
 791                                         string packages;
 792
 793                                         if (value.Length == 0) {
 794                                                 Error_RequiresArgument (option);
 795                                                 return ParseResult.Error;
 796                                         }
 797                                         packages = String.Join (" ", value.Split (new Char[] { ';', ',', '\n', '\r' }));
 798                                         string pkgout = Driver.GetPackageFlags (packages, report);
 799
 800                                         if (pkgout == null)
 801                                                 return ParseResult.Error;
 802
 803                                         string[] xargs = pkgout.Trim (new Char[] { ' ', '\n', '\r', '\t' }).Split (new Char[] { ' ', '\t' });
 804                                         args = AddArgs (args, xargs);
 805                                         return ParseResult.Success;
 806                                 }
 807
 808                         case "/linkres":
 809                         case "/linkresource":
 810                         case "/res":
 811                         case "/resource":
 812                                 AssemblyResource res = null;
 813                                 string[] s = value.Split (argument_value_separator, StringSplitOptions.RemoveEmptyEntries);
 814                                 switch (s.Length) {
 815                                 case 1:
 816                                         if (s[0].Length == 0)
 817                                                 goto default;
 818                                         res = new AssemblyResource (s[0], Path.GetFileName (s[0]));
 819                                         break;
 820                                 case 2:
 821                                         res = new AssemblyResource (s[0], s[1]);
 822                                         break;
 823                                 case 3:
 824                                         if (s[2] != "public" && s[2] != "private") {
 825                                                 report.Error (1906, "Invalid resource visibility option `{0}'. Use either `public' or `private' instead", s[2]);
 826                                                 return ParseResult.Error;
 827                                         }
 828                                         res = new AssemblyResource (s[0], s[1], s[2] == "private");
 829                                         break;
 830                                 default:
 831                                         report.Error (-2005, "Wrong number of arguments for option `{0}'", option);
 832                                         return ParseResult.Error;
 833                                 }
 834
 835                                 if (res != null) {
 836                                         res.IsEmbeded = arg[1] == 'r' || arg[1] == 'R';
 837                                         AddResource (res, settings);
 838                                 }
 839
 840                                 return ParseResult.Success;
 841
 842                         case "/recurse":
 843                                 if (value.Length == 0) {
 844                                         Error_RequiresFileName (option);
 845                                         return ParseResult.Error;
 846                                 }
 847                                 ProcessSourceFiles (value, true, settings.SourceFiles);
 848                                 return ParseResult.Success;
 849
 850                         case "/r":
 851                         case "/reference": {
 852                                         if (value.Length == 0) {
 853                                                 Error_RequiresFileName (option);
 854                                                 return ParseResult.Error;
 855                                         }
 856
 857                                         string[] refs = value.Split (argument_value_separator);
 858                                         foreach (string r in refs) {
 859                                                 if (r.Length == 0)
 860                                                         continue;
 861
 862                                                 string val = r;
 863                                                 int index = val.IndexOf ('=');
 864                                                 if (index > -1) {
 865                                                         string alias = r.Substring (0, index);
 866                                                         string assembly = r.Substring (index + 1);
 867                                                         AddAssemblyReference (alias, assembly, settings);
 868                                                         if (refs.Length != 1) {
 869                                                                 report.Error (2034, "Cannot specify multiple aliases using single /reference option");
 870                                                                 return ParseResult.Error;
 871                                                         }
 872                                                 } else {
 873                                                         settings.AssemblyReferences.Add (val);
 874                                                 }
 875                                         }
 876                                         return ParseResult.Success;
 877                                 }
 878                         case "/addmodule": {
 879                                         if (value.Length == 0) {
 880                                                 Error_RequiresFileName (option);
 881                                                 return ParseResult.Error;
 882                                         }
 883
 884                                         string[] refs = value.Split (argument_value_separator);
 885                                         foreach (string r in refs) {
 886                                                 settings.Modules.Add (r);
 887                                         }
 888                                         return ParseResult.Success;
 889                                 }
 890                         case "/win32res": {
 891                                         if (value.Length == 0) {
 892                                                 Error_RequiresFileName (option);
 893                                                 return ParseResult.Error;
 894                                         }
 895
 896                                         if (settings.Win32IconFile != null)
 897                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 898
 899                                         settings.Win32ResourceFile = value;
 900                                         return ParseResult.Success;
 901                                 }
 902                         case "/win32icon": {
 903                                         if (value.Length == 0) {
 904                                                 Error_RequiresFileName (option);
 905                                                 return ParseResult.Error;
 906                                         }
 907
 908                                         if (settings.Win32ResourceFile != null)
 909                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 910
 911                                         settings.Win32IconFile = value;
 912                                         return ParseResult.Success;
 913                                 }
 914                         case "/doc": {
 915                                         if (value.Length == 0) {
 916                                                 Error_RequiresFileName (option);
 917                                                 return ParseResult.Error;
 918                                         }
 919
 920                                         settings.DocumentationFile = value;
 921                                         return ParseResult.Success;
 922                                 }
 923                         case "/lib": {
 924                                         string[] libdirs;
 925
 926                                         if (value.Length == 0) {
 927                                                 return ParseResult.Error;
 928                                         }
 929
 930                                         libdirs = value.Split (argument_value_separator);
 931                                         foreach (string dir in libdirs)
 932                                                 settings.ReferencesLookupPaths.Add (dir);
 933                                         return ParseResult.Success;
 934                                 }
 935
 936                         case "/debug-":
 937                                 settings.GenerateDebugInfo = false;
 938                                 return ParseResult.Success;
 939
 940                         case "/debug":
 941                                 if (value.Equals ("full", StringComparison.OrdinalIgnoreCase) || value.Equals ("pdbonly", StringComparison.OrdinalIgnoreCase) || value.Equals ("portable", StringComparison.OrdinalIgnoreCase) || idx < 0) {
 942                                         settings.GenerateDebugInfo = true;
 943                                         return ParseResult.Success;
 944                                 }
 945
 946                                 if (value.Length > 0) {
 947                                         report.Error (1902, "Invalid debug option `{0}'. Valid options are `full' or `pdbonly'", value);
 948                                 } else {
 949                                         Error_RequiresArgument (option);
 950                                 }
 951
 952                                 return ParseResult.Error;
 953
 954                         case "/debug+":
 955                                 settings.GenerateDebugInfo = true;
 956                                 return ParseResult.Success;
 957
 958                         case "/checked":
 959                         case "/checked+":
 960                                 settings.Checked = true;
 961                                 return ParseResult.Success;
 962
 963                         case "/checked-":
 964                                 settings.Checked = false;
 965                                 return ParseResult.Success;
 966
 967                         case "/clscheck":
 968                         case "/clscheck+":
 969                                 settings.VerifyClsCompliance = true;
 970                                 return ParseResult.Success;
 971
 972                         case "/clscheck-":
 973                                 settings.VerifyClsCompliance = false;
 974                                 return ParseResult.Success;
 975
 976                         case "/unsafe":
 977                         case "/unsafe+":
 978                                 settings.Unsafe = true;
 979                                 return ParseResult.Success;
 980
 981                         case "/unsafe-":
 982                                 settings.Unsafe = false;
 983                                 return ParseResult.Success;
 984
 985                         case "/warnaserror":
 986                         case "/warnaserror+":
 987                                 if (value.Length == 0) {
 988                                         settings.WarningsAreErrors = true;
 989                                         parser_settings.WarningsAreErrors = true;
 990                                 } else {
 991                                         if (!ProcessWarningsList (value, settings.AddWarningAsError))
 992                                                 return ParseResult.Error;
 993                                 }
 994                                 return ParseResult.Success;
 995
 996                         case "/warnaserror-":
 997                                 if (value.Length == 0) {
 998                                         settings.WarningsAreErrors = false;
 999                                 } else {
1000                                         if (!ProcessWarningsList (value, settings.AddWarningOnly))
1001                                                 return ParseResult.Error;
1002                                 }
1003                                 return ParseResult.Success;
1004
1005                         case "/warn":
1006                         case "/w":
1007                                 if (value.Length == 0) {
1008                                         Error_RequiresArgument (option);
1009                                         return ParseResult.Error;
1010                                 }
1011
1012                                 SetWarningLevel (value, settings);
1013                                 return ParseResult.Success;
1014
1015                         case "/nowarn":
1016                                 if (value.Length == 0) {
1017                                         Error_RequiresArgument (option);
1018                                         return ParseResult.Error;
1019                                 }
1020
1021                                 if (!ProcessWarningsList (value, settings.SetIgnoreWarning))
1022                                         return ParseResult.Error;
1023
1024                                 return ParseResult.Success;
1025
1026                         case "/noconfig":
1027                                 settings.LoadDefaultReferences = false;
1028                                 return ParseResult.Success;
1029
1030                         case "/platform":
1031                                 if (value.Length == 0) {
1032                                         Error_RequiresArgument (option);
1033                                         return ParseResult.Error;
1034                                 }
1035
1036                                 switch (value.ToLowerInvariant ()) {
1037                                 case "arm":
1038                                         settings.Platform = Platform.Arm;
1039                                         break;
1040                                 case "anycpu":
1041                                         settings.Platform = Platform.AnyCPU;
1042                                         break;
1043                                 case "x86":
1044                                         settings.Platform = Platform.X86;
1045                                         break;
1046                                 case "x64":
1047                                         settings.Platform = Platform.X64;
1048                                         break;
1049                                 case "itanium":
1050                                         settings.Platform = Platform.IA64;
1051                                         break;
1052                                 case "anycpu32bitpreferred":
1053                                         settings.Platform = Platform.AnyCPU32Preferred;
1054                                         break;
1055                                 default:
1056                                         report.Error (1672, "Invalid -platform option `{0}'. Valid options are `anycpu', `anycpu32bitpreferred', `arm', `x86', `x64' or `itanium'",
1057                                                 value);
1058                                         return ParseResult.Error;
1059                                 }
1060
1061                                 return ParseResult.Success;
1062
1063                         case "/sdk":
1064                                 if (value.Length == 0) {
1065                                         Error_RequiresArgument (option);
1066                                         return ParseResult.Error;
1067                                 }
1068
1069                                 settings.SdkVersion = value;
1070                                 return ParseResult.Success;
1071
1072                         // We just ignore this.
1073                         case "/errorreport":
1074                         case "/filealign":
1075                                 if (value.Length == 0) {
1076                                         Error_RequiresArgument (option);
1077                                         return ParseResult.Error;
1078                                 }
1079
1080                                 return ParseResult.Success;
1081
1082                         case "/helpinternal":
1083                                 OtherFlags ();
1084                                 return ParseResult.Stop;
1085
1086                         case "/help":
1087                         case "/?":
1088                                 Usage ();
1089                                 return ParseResult.Stop;
1090
1091                         case "/main":
1092                         case "/m":
1093                                 if (value.Length == 0) {
1094                                         Error_RequiresArgument (option);
1095                                         return ParseResult.Error;
1096                                 }
1097                                 settings.MainClass = value;
1098                                 return ParseResult.Success;
1099
1100                         case "/nostdlib":
1101                         case "/nostdlib+":
1102                                 settings.StdLib = false;
1103                                 return ParseResult.Success;
1104
1105                         case "/nostdlib-":
1106                                 settings.StdLib = true;
1107                                 return ParseResult.Success;
1108
1109                         case "/fullpaths":
1110                                 settings.ShowFullPaths = true;
1111                                 return ParseResult.Success;
1112
1113                         case "/keyfile":
1114                                 if (value.Length == 0) {
1115                                         Error_RequiresFileName (option);
1116                                         return ParseResult.Error;
1117                                 }
1118
1119                                 settings.StrongNameKeyFile = value;
1120                                 return ParseResult.Success;
1121
1122                         case "/keycontainer":
1123                                 if (value.Length == 0) {
1124                                         Error_RequiresArgument (option);
1125                                         return ParseResult.Error;
1126                                 }
1127
1128                                 settings.StrongNameKeyContainer = value;
1129                                 return ParseResult.Success;
1130
1131                         case "/delaysign+":
1132                         case "/delaysign":
1133                                 settings.StrongNameDelaySign = true;
1134                                 return ParseResult.Success;
1135
1136                         case "/delaysign-":
1137                                 settings.StrongNameDelaySign = false;
1138                                 return ParseResult.Success;
1139
1140                         case "/langversion":
1141                                 if (value.Length == 0) {
1142                                         Error_RequiresArgument (option);
1143                                         return ParseResult.Error;
1144                                 }
1145
1146                                 switch (value.ToLowerInvariant ()) {
1147                                 case "iso-1":
1148                                 case "1":
1149                                 case "1.0":
1150                                         settings.Version = LanguageVersion.ISO_1;
1151                                         return ParseResult.Success;
1152                                 case "default":
1153                                         settings.Version = LanguageVersion.Default;
1154                                         return ParseResult.Success;
1155                                 case "2":
1156                                 case "2.0":
1157                                 case "iso-2":
1158                                         settings.Version = LanguageVersion.ISO_2;
1159                                         return ParseResult.Success;
1160                                 case "3":
1161                                 case "3.0":
1162                                         settings.Version = LanguageVersion.V_3;
1163                                         return ParseResult.Success;
1164                                 case "4":
1165                                 case "4.0":
1166                                         settings.Version = LanguageVersion.V_4;
1167                                         return ParseResult.Success;
1168                                 case "5":
1169                                 case "5.0":
1170                                         settings.Version = LanguageVersion.V_5;
1171                                         return ParseResult.Success;
1172                                 case "6":
1173                                 case "6.0":
1174                                         settings.Version = LanguageVersion.V_6;
1175                                         return ParseResult.Success;
1176                                 case "7":
1177                                 case "7.0":
1178                                         settings.Version = LanguageVersion.V_7;
1179                                         return ParseResult.Success;
1180                                 case "7.1":
1181                                         settings.Version = LanguageVersion.V_7_1;
1182                                         return ParseResult.Success;
1183                                 case "7.2":
1184                                         settings.Version = LanguageVersion.V_7_2;
1185                                         return ParseResult.Success;
1186                                 case "latest":
1187                                         settings.Version = LanguageVersion.Latest;
1188                                         return ParseResult.Success;
1189                                 case "experimental":
1190                                         settings.Version = LanguageVersion.Experimental;
1191                                         return ParseResult.Success;
1192                                 }
1193
1194                                 if (value.StartsWith ("0", StringComparison.Ordinal)) {
1195                                         report.Error (8303, "Specified language version `{0}' cannot have leading zeroes", value);
1196                                 } else {
1197                                         report.Error (1617, "Invalid -langversion option `{0}'. It must be `ISO-1', `ISO-2', Default, Latest or value in range 1 to 7.2", value);
1198                                 }
1199
1200                                 return ParseResult.Error;
1201
1202                         case "/codepage":
1203                                 if (value.Length == 0) {
1204                                         Error_RequiresArgument (option);
1205                                         return ParseResult.Error;
1206                                 }
1207
1208                                 switch (value) {
1209                                 case "utf8":
1210                                         settings.Encoding = Encoding.UTF8;
1211                                         break;
1212                                 case "reset":
1213                                         settings.Encoding = Encoding.Default;
1214                                         break;
1215                                 default:
1216                                         try {
1217                                                 settings.Encoding = Encoding.GetEncoding (int.Parse (value));
1218                                         } catch {
1219                                                 report.Error (2016, "Code page `{0}' is invalid or not installed", value);
1220                                         }
1221                                         return ParseResult.Error;
1222                                 }
1223                                 return ParseResult.Success;
1224
1225                         case "/runtimemetadataversion":
1226                                 if (value.Length == 0) {
1227                                         Error_RequiresArgument (option);
1228                                         return ParseResult.Error;
1229                                 }
1230
1231                                 settings.RuntimeMetadataVersion = value;
1232                                 return ParseResult.Success;
1233
1234                         case "/pathmap":
1235                                 if (value.Length == 0) {
1236                                         return ParseResult.Success;
1237                                 }
1238
1239                                 foreach (var pair in value.Split (',')) {
1240                                         var kv = pair.Split ('=');
1241                                         if (kv.Length != 2) {
1242                                                 report.Error (8101, "The pathmap option was incorrectly formatted");
1243                                                 return ParseResult.Error;
1244                                         }
1245
1246                                         if (settings.PathMap == null)
1247                                                 settings.PathMap = new List<KeyValuePair<string, string>> ();
1248
1249                                         var key = kv [0].TrimEnd (Path.DirectorySeparatorChar);
1250                                         var path = kv [1].TrimEnd (Path.DirectorySeparatorChar);
1251                                         if (key.Length == 0 || path.Length == 0)
1252                                                 report.Error (8101, "The pathmap option was incorrectly formatted");
1253
1254                                         settings.PathMap.Add (new KeyValuePair<string, string> (key, path));
1255                                 }
1256
1257                                 return ParseResult.Success;
1258
1259                         // csc options that we don't support
1260                         case "/analyzer":
1261                         case "/appconfig":
1262                         case "/baseaddress":
1263                         case "/deterministic":
1264                         case "/deterministic+":
1265                         case "/deterministic-":
1266                         case "/errorendlocation":
1267                         case "/errorlog":
1268                         case "/features":
1269                         case "/highentropyva":
1270                         case "/highentropyva+":
1271                         case "/highentropyva-":
1272                         case "/link":
1273                         case "/moduleassemblyname":
1274                         case "/nowin32manifest":
1275                         case "/pdb":
1276                         case "/preferreduilang":
1277                         case "/publicsign":
1278                         case "/publicsign+":
1279                         case "/publicsign-":
1280                         case "/reportanalyzer":
1281                         case "/ruleset":
1282                         case "/sqmsessionguid":
1283                         case "/subsystemversion":
1284                         case "/utf8output":
1285                         case "/win32manifest":
1286                                 return ParseResult.Success;
1287
1288                         default:
1289                                 return ParseResult.UnknownOption;
1290                         }
1291                 }
1292
1293                 //
1294                 // Currently handles the Unix-like command line options, but will be
1295                 // deprecated in favor of the CSCParseOption, which will also handle the
1296                 // options that start with a dash in the future.
1297                 //
1298                 ParseResult ParseOptionUnix (string arg, ref string[] args, ref int i, CompilerSettings settings)
1299                 {
1300                         switch (arg){
1301                         case "-v":
1302                                 settings.VerboseParserFlag++;
1303                                 return ParseResult.Success;
1304
1305                         case "--version":
1306                                 Version ();
1307                                 return ParseResult.Stop;
1308
1309                         case "--parse":
1310                                 settings.ParseOnly = true;
1311                                 return ParseResult.Success;
1312
1313                         case "--main": case "-m":
1314                                 report.Warning (-29, 1, "Compatibility: Use -main:CLASS instead of --main CLASS or -m CLASS");
1315                                 if ((i + 1) >= args.Length){
1316                                         Error_RequiresArgument (arg);
1317                                         return ParseResult.Error;
1318                                 }
1319                                 settings.MainClass = args[++i];
1320                                 return ParseResult.Success;
1321
1322                         case "--unsafe":
1323                                 report.Warning (-29, 1, "Compatibility: Use -unsafe instead of --unsafe");
1324                                 settings.Unsafe = true;
1325                                 return ParseResult.Success;
1326
1327                         case "/?": case "/h": case "/help":
1328                         case "--help":
1329                                 Usage ();
1330                                 return ParseResult.Stop;
1331
1332                         case "--define":
1333                                 report.Warning (-29, 1, "Compatibility: Use -d:SYMBOL instead of --define SYMBOL");
1334                                 if ((i + 1) >= args.Length){
1335                                         Error_RequiresArgument (arg);
1336                                         return ParseResult.Error;
1337                                 }
1338
1339                                 settings.AddConditionalSymbol (args [++i]);
1340                                 return ParseResult.Success;
1341
1342                         case "--tokenize":
1343                                 settings.TokenizeOnly = true;
1344                                 return ParseResult.Success;
1345
1346                         case "-o":
1347                         case "--output":
1348                                 report.Warning (-29, 1, "Compatibility: Use -out:FILE instead of --output FILE or -o FILE");
1349                                 if ((i + 1) >= args.Length){
1350                                         Error_RequiresArgument (arg);
1351                                         return ParseResult.Error;
1352                                 }
1353                                 settings.OutputFile = args[++i];
1354                                 return ParseResult.Success;
1355
1356                         case "--checked":
1357                                 report.Warning (-29, 1, "Compatibility: Use -checked instead of --checked");
1358                                 settings.Checked = true;
1359                                 return ParseResult.Success;
1360
1361                         case "--stacktrace":
1362                                 settings.Stacktrace = true;
1363                                 return ParseResult.Success;
1364
1365                         case "--linkresource":
1366                         case "--linkres":
1367                                 report.Warning (-29, 1, "Compatibility: Use -linkres:VALUE instead of --linkres VALUE");
1368                                 if ((i + 1) >= args.Length){
1369                                         Error_RequiresArgument (arg);
1370                                         return ParseResult.Error;
1371                                 }
1372
1373                                 AddResource (new AssemblyResource (args[++i], args[i]), settings);
1374                                 return ParseResult.Success;
1375
1376                         case "--resource":
1377                         case "--res":
1378                                 report.Warning (-29, 1, "Compatibility: Use -res:VALUE instead of --res VALUE");
1379                                 if ((i + 1) >= args.Length){
1380                                         Error_RequiresArgument (arg);
1381                                         return ParseResult.Error;
1382                                 }
1383
1384                                 AddResource (new AssemblyResource (args[++i], args[i], true), settings);
1385                                 return ParseResult.Success;
1386
1387                         case "--target":
1388                                 report.Warning (-29, 1, "Compatibility: Use -target:KIND instead of --target KIND");
1389                                 if ((i + 1) >= args.Length){
1390                                         Error_RequiresArgument (arg);
1391                                         return ParseResult.Error;
1392                                 }
1393
1394                                 string type = args [++i];
1395                                 switch (type){
1396                                 case "library":
1397                                         settings.Target = Target.Library;
1398                                         settings.TargetExt = ".dll";
1399                                         break;
1400
1401                                 case "exe":
1402                                         settings.Target = Target.Exe;
1403                                         break;
1404
1405                                 case "winexe":
1406                                         settings.Target = Target.WinExe;
1407                                         break;
1408
1409                                 case "module":
1410                                         settings.Target = Target.Module;
1411                                         settings.TargetExt = ".dll";
1412                                         break;
1413                                 default:
1414                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
1415                                         break;
1416                                 }
1417                                 return ParseResult.Success;
1418
1419                         case "-r":
1420                                 report.Warning (-29, 1, "Compatibility: Use -r:LIBRARY instead of -r library");
1421                                 if ((i + 1) >= args.Length){
1422                                         Error_RequiresArgument (arg);
1423                                         return ParseResult.Error;
1424                                 }
1425
1426                                 string val = args [++i];
1427                                 int idx = val.IndexOf ('=');
1428                                 if (idx > -1) {
1429                                         string alias = val.Substring (0, idx);
1430                                         string assembly = val.Substring (idx + 1);
1431                                         AddAssemblyReference (alias, assembly, settings);
1432                                         return ParseResult.Success;
1433                                 }
1434
1435                                 settings.AssemblyReferences.Add (val);
1436                                 return ParseResult.Success;
1437
1438                         case "-L":
1439                                 report.Warning (-29, 1, "Compatibility: Use -lib:ARG instead of --L arg");
1440                                 if ((i + 1) >= args.Length){
1441                                         Error_RequiresArgument (arg);
1442                                         return ParseResult.Error;
1443                                 }
1444                                 settings.ReferencesLookupPaths.Add (args [++i]);
1445                                 return ParseResult.Success;
1446
1447                         case "--lint":
1448                                 settings.EnhancedWarnings = true;
1449                                 return ParseResult.Success;
1450
1451                         case "--nostdlib":
1452                                 report.Warning (-29, 1, "Compatibility: Use -nostdlib instead of --nostdlib");
1453                                 settings.StdLib = false;
1454                                 return ParseResult.Success;
1455
1456                         case "--nowarn":
1457                                 report.Warning (-29, 1, "Compatibility: Use -nowarn instead of --nowarn");
1458                                 if ((i + 1) >= args.Length){
1459                                         Error_RequiresArgument (arg);
1460                                         return ParseResult.Error;
1461                                 }
1462                                 int warn = 0;
1463
1464                                 try {
1465                                         warn = int.Parse (args [++i]);
1466                                 } catch {
1467                                         Usage ();
1468                                         Environment.Exit (1);
1469                                 }
1470                                 settings.SetIgnoreWarning (warn);
1471                                 return ParseResult.Success;
1472
1473                         case "--wlevel":
1474                                 report.Warning (-29, 1, "Compatibility: Use -warn:LEVEL instead of --wlevel LEVEL");
1475                                 if ((i + 1) >= args.Length){
1476                                         Error_RequiresArgument (arg);
1477                                         return ParseResult.Error;
1478                                 }
1479
1480                                 SetWarningLevel (args [++i], settings);
1481                                 return ParseResult.Success;
1482
1483                         case "--mcs-debug":
1484                                 if ((i + 1) >= args.Length){
1485                                         Error_RequiresArgument (arg);
1486                                         return ParseResult.Error;
1487                                 }
1488
1489                                 try {
1490                                         settings.DebugFlags = int.Parse (args [++i]);
1491                                 } catch {
1492                                         Error_RequiresArgument (arg);
1493                                         return ParseResult.Error;
1494                                 }
1495
1496                                 return ParseResult.Success;
1497
1498                         case "--about":
1499                                 About ();
1500                                 return ParseResult.Stop;
1501
1502                         case "--recurse":
1503                                 report.Warning (-29, 1, "Compatibility: Use -recurse:PATTERN option instead --recurse PATTERN");
1504                                 if ((i + 1) >= args.Length){
1505                                         Error_RequiresArgument (arg);
1506                                         return ParseResult.Error;
1507                                 }
1508                                 ProcessSourceFiles (args [++i], true, settings.SourceFiles);
1509                                 return ParseResult.Success;
1510
1511                         case "--timestamp":
1512                                 settings.Timestamps = true;
1513                                 return ParseResult.Success;
1514
1515                         case "--debug": case "-g":
1516                                 report.Warning (-29, 1, "Compatibility: Use -debug option instead of -g or --debug");
1517                                 settings.GenerateDebugInfo = true;
1518                                 return ParseResult.Success;
1519
1520                         case "--noconfig":
1521                                 report.Warning (-29, 1, "Compatibility: Use -noconfig option instead of --noconfig");
1522                                 settings.LoadDefaultReferences = false;
1523                                 return ParseResult.Success;
1524
1525                         case "--metadata-only":
1526                                 settings.WriteMetadataOnly = true;
1527                                 return ParseResult.Success;
1528
1529                         case "--break-on-ice":
1530                                 settings.BreakOnInternalError = true;
1531                                 return ParseResult.Success;
1532
1533                         default:
1534                                 if (arg.StartsWith ("--fatal", StringComparison.Ordinal)) {
1535                                         int fatal = 1;
1536                                         if (arg.StartsWith ("--fatal=", StringComparison.Ordinal))
1537                                                 int.TryParse (arg.Substring (8), out fatal);
1538
1539                                         settings.FatalCounter = fatal;
1540                                         return ParseResult.Success;
1541                                 }
1542                                 if (arg.StartsWith ("--runtime:", StringComparison.Ordinal)) {
1543                                         string version = arg.Substring (10);
1544
1545                                         switch (version) {
1546                                         case "v1":
1547                                         case "V1":
1548                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v1;
1549                                                 break;
1550                                         case "v2":
1551                                         case "V2":
1552                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v2;
1553                                                 break;
1554                                         case "v4":
1555                                         case "V4":
1556                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v4;
1557                                                 break;
1558                                         }
1559                                         return ParseResult.Success;
1560                                 }
1561
1562                                 if (arg.StartsWith ("--getresourcestrings:", StringComparison.Ordinal)) {
1563                                         string file = arg.Substring (21).Trim ();
1564                                         if (file.Length < 1) {
1565                                                 Error_RequiresArgument (arg);
1566                                                 return ParseResult.Error;
1567                                         }
1568
1569                                         if (settings.GetResourceStrings == null)
1570                                                 settings.GetResourceStrings = new List<string> ();
1571
1572                                         settings.GetResourceStrings.Add (file);
1573                                         return ParseResult.Success;
1574                                 }
1575
1576                                 return ParseResult.UnknownOption;
1577                         }
1578                 }
1579
1580                 void SetWarningLevel (string s, CompilerSettings settings)
1581                 {
1582                         int level = -1;
1583
1584                         try {
1585                                 level = int.Parse (s);
1586                         } catch {
1587                         }
1588                         if (level < 0 || level > 4) {
1589                                 report.Error (1900, "Warning level must be in the range 0-4");
1590                                 return;
1591                         }
1592                         settings.WarningLevel = level;
1593                 }
1594
1595                 //
1596                 // Given a path specification, splits the path from the file/pattern
1597                 //
1598                 static void SplitPathAndPattern (string spec, out string path, out string pattern)
1599                 {
1600                         int p = spec.LastIndexOf ('/');
1601                         if (p != -1) {
1602                                 //
1603                                 // Windows does not like /file.cs, switch that to:
1604                                 // "\", "file.cs"
1605                                 //
1606                                 if (p == 0) {
1607                                         path = "\\";
1608                                         pattern = spec.Substring (1);
1609                                 } else {
1610                                         path = spec.Substring (0, p);
1611                                         pattern = spec.Substring (p + 1);
1612                                 }
1613                                 return;
1614                         }
1615
1616                         p = spec.LastIndexOf ('\\');
1617                         if (p != -1) {
1618                                 path = spec.Substring (0, p);
1619                                 pattern = spec.Substring (p + 1);
1620                                 return;
1621                         }
1622
1623                         path = ".";
1624                         pattern = spec;
1625                 }
1626
1627                 void Usage ()
1628                 {
1629                         output.WriteLine (
1630                                 "Turbo C# compiler, Copyright 2001-2011 Novell, Inc., 2011-2016 Xamarin, Inc, 2016-2017 Microsoft Corp\n" +
1631                                 "mcs [options] source-files\n" +
1632                                 "   --about              About the Mono C# compiler\n" +
1633                                 "   -addmodule:M1[,Mn]   Adds the module to the generated assembly\n" +
1634                                 "   -checked[+|-]        Sets default aritmetic overflow context\n" +
1635                                 "   -clscheck[+|-]       Disables CLS Compliance verifications\n" +
1636                                 "   -codepage:ID         Sets code page to the one in ID (number, utf8, reset)\n" +
1637                                 "   -define:S1[;S2]      Defines one or more conditional symbols (short: -d)\n" +
1638                                 "   -debug[+|-], -g      Generate debugging information\n" +
1639                                 "   -delaysign[+|-]      Only insert the public key into the assembly (no signing)\n" +
1640                                 "   -doc:FILE            Process documentation comments to XML file\n" +
1641                                 "   -fullpaths           Any issued error or warning uses absolute file path\n" +
1642                                 "   -help                Lists all compiler options (short: -?)\n" +
1643                                 "   -keycontainer:NAME   The key pair container used to sign the output assembly\n" +
1644                                 "   -keyfile:FILE        The key file used to strongname the ouput assembly\n" +
1645                                 "   -langversion:TEXT    Specifies language version: ISO-1, ISO-2, 3, 4, 5, 6, Default or Experimental\n" +
1646                                 "   -lib:PATH1[,PATHn]   Specifies the location of referenced assemblies\n" +
1647                                 "   -main:CLASS          Specifies the class with the Main method (short: -m)\n" +
1648                                 "   -noconfig            Disables implicitly referenced assemblies\n" +
1649                                 "   -nostdlib[+|-]       Does not reference mscorlib.dll library\n" +
1650                                 "   -nowarn:W1[,Wn]      Suppress one or more compiler warnings\n" +
1651                                 "   -optimize[+|-]       Enables advanced compiler optimizations (short: -o)\n" +
1652                                 "   -out:FILE            Specifies output assembly name\n" +
1653                                 "   -pathmap:K=V[,Kn=Vn] Sets a mapping for source path names used in generated output\n" +
1654                                 "   -pkg:P1[,Pn]         References packages P1..Pn\n" +
1655                                 "   -platform:ARCH       Specifies the target platform of the output assembly\n" +
1656                                 "                        ARCH can be one of: anycpu, anycpu32bitpreferred, arm,\n" +
1657                                 "                        x86, x64 or itanium. The default is anycpu.\n" +
1658                                 "   -recurse:SPEC        Recursively compiles files according to SPEC pattern\n" +
1659                                 "   -reference:A1[,An]   Imports metadata from the specified assembly (short: -r)\n" +
1660                                 "   -reference:ALIAS=A   Imports metadata using specified extern alias (short: -r)\n" +
1661                                 "   -sdk:VERSION         Specifies SDK version of referenced assemblies\n" +
1662                                 "                        VERSION can be one of: 2, 4, 4.5 (default) or a custom value\n" +
1663                                 "   -target:KIND         Specifies the format of the output assembly (short: -t)\n" +
1664                                 "                        KIND can be one of: exe, winexe, library, module\n" +
1665                                 "   -unsafe[+|-]         Allows to compile code which uses unsafe keyword\n" +
1666                                 "   -warnaserror[+|-]    Treats all warnings as errors\n" +
1667                                 "   -warnaserror[+|-]:W1[,Wn] Treats one or more compiler warnings as errors\n" +
1668                                 "   -warn:0-4            Sets warning level, the default is 4 (short -w:)\n" +
1669                                 "   -helpinternal        Shows internal and advanced compiler options\n" +
1670                                 "\n" +
1671                                 "Resources:\n" +
1672                                 "   -linkresource:FILE[,ID] Links FILE as a resource (short: -linkres)\n" +
1673                                 "   -resource:FILE[,ID]     Embed FILE as a resource (short: -res)\n" +
1674                                 "   -win32res:FILE          Specifies Win32 resource file (.res)\n" +
1675                                 "   -win32icon:FILE         Use this icon for the output\n" +
1676                                                                 "   @file                   Read response file for more options\n\n" +
1677                                 "Options can be of the form -option or /option");
1678                 }
1679
1680                 void Version ()
1681                 {
1682                         string version = System.Reflection.MethodBase.GetCurrentMethod ().DeclaringType.Assembly.GetName ().Version.ToString ();
1683                         output.WriteLine ("Mono C# compiler version {0}", version);
1684                 }
1685         }
1686
1687         public class RootContext
1688         {
1689                 //
1690                 // Contains the parsed tree
1691                 //
1692                 static ModuleContainer root;
1693
1694                 static public ModuleContainer ToplevelTypes {
1695                         get { return root; }
1696                         set { root = value; }
1697                 }
1698         }
1699 }