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                 Future = 100,
  32
  33                 Default = LanguageVersion.Future,
  34         }
  35
  36         public enum RuntimeVersion
  37         {
  38                 v1,
  39                 v2,
  40                 v4
  41         }
  42
  43         public enum Target
  44         {
  45                 Library, Exe, Module, WinExe
  46         }
  47
  48         public enum Platform
  49         {
  50                 AnyCPU,
  51                 AnyCPU32Preferred,
  52                 Arm,
  53                 X86,
  54                 X64,
  55                 IA64
  56         }
  57
  58         public class CompilerSettings
  59         {
  60                 public Target Target;
  61                 public Platform Platform;
  62                 public string TargetExt;
  63                 public bool VerifyClsCompliance;
  64                 public bool Optimize;
  65                 public LanguageVersion Version;
  66                 public bool EnhancedWarnings;
  67                 public bool LoadDefaultReferences;
  68                 public string SdkVersion;
  69
  70                 public string StrongNameKeyFile;
  71                 public string StrongNameKeyContainer;
  72                 public bool StrongNameDelaySign;
  73
  74                 public int TabSize;
  75
  76                 public bool WarningsAreErrors;
  77                 public int WarningLevel;
  78
  79                 //
  80                 // Assemblies references to be loaded
  81                 //
  82                 public List<string> AssemblyReferences;
  83
  84                 //
  85                 // External aliases for assemblies
  86                 //
  87                 public List<Tuple<string, string>> AssemblyReferencesAliases;
  88
  89                 //
  90                 // Modules to be embedded
  91                 //
  92                 public List<string> Modules;
  93
  94                 //
  95                 // Lookup paths for referenced assemblies
  96                 //
  97                 public List<string> ReferencesLookupPaths;
  98
  99                 //
 100                 // Encoding.
 101                 //
 102                 public Encoding Encoding;
 103
 104                 //
 105                 // If set, enable XML documentation generation
 106                 //
 107                 public string DocumentationFile;
 108
 109                 public string MainClass;
 110
 111                 //
 112                 // Output file
 113                 //
 114                 public string OutputFile;
 115
 116                 //
 117                 // The default compiler checked state
 118                 //
 119                 public bool Checked;
 120
 121                 //
 122                 // If true, the compiler is operating in statement mode,
 123                 // this currently turns local variable declaration into
 124                 // static variables of a class
 125                 //
 126                 public bool StatementMode;      // TODO: SUPER UGLY
 127
 128                 //
 129                 // Whether to allow Unsafe code
 130                 //
 131                 public bool Unsafe;
 132
 133                 public string Win32ResourceFile;
 134                 public string Win32IconFile;
 135
 136                 //
 137                 // A list of resource files for embedding
 138                 //
 139                 public List<AssemblyResource> Resources;
 140
 141                 public bool GenerateDebugInfo;
 142
 143                 #region Compiler debug flags only
 144                 public bool ParseOnly, TokenizeOnly, Timestamps;
 145                 public int DebugFlags;
 146                 public int VerboseParserFlag;
 147                 public int FatalCounter;
 148                 public bool Stacktrace;
 149                 public bool BreakOnInternalError;
 150                 #endregion
 151
 152                 public bool ShowFullPaths;
 153
 154                 //
 155                 // Whether we are being linked against the standard libraries.
 156                 // This is only used to tell whether `System.Object' should
 157                 // have a base class or not.
 158                 //
 159                 public bool StdLib;
 160
 161                 public RuntimeVersion StdLibRuntimeVersion;
 162
 163                 public string RuntimeMetadataVersion;
 164
 165                 public bool WriteMetadataOnly;
 166
 167                 readonly List<string> conditional_symbols;
 168
 169                 readonly List<SourceFile> source_files;
 170
 171                 List<int> warnings_as_error;
 172                 List<int> warnings_only;
 173                 HashSet<int> warning_ignore_table;
 174
 175                 public CompilerSettings ()
 176                 {
 177                         StdLib = true;
 178                         Target = Target.Exe;
 179                         TargetExt = ".exe";
 180                         Platform = Platform.AnyCPU;
 181                         Version = LanguageVersion.Default;
 182                         VerifyClsCompliance = true;
 183                         Encoding = Encoding.UTF8;
 184                         LoadDefaultReferences = true;
 185                         StdLibRuntimeVersion = RuntimeVersion.v4;
 186                         WarningLevel = 4;
 187
 188                         // Default to 1 or mdb files would be platform speficic
 189                         TabSize = 1;
 190
 191                         AssemblyReferences = new List<string> ();
 192                         AssemblyReferencesAliases = new List<Tuple<string, string>> ();
 193                         Modules = new List<string> ();
 194                         ReferencesLookupPaths = new List<string> ();
 195
 196                         conditional_symbols = new List<string> ();
 197                         //
 198                         // Add default mcs define
 199                         //
 200                         conditional_symbols.Add ("__MonoCS__");
 201
 202                         source_files = new List<SourceFile> ();
 203                 }
 204
 205                 #region Properties
 206
 207                 public SourceFile FirstSourceFile {
 208                         get {
 209                                 return source_files.Count > 0 ? source_files [0] : null;
 210                         }
 211                 }
 212
 213                 public bool HasKeyFileOrContainer {
 214                         get {
 215                                 return StrongNameKeyFile != null || StrongNameKeyContainer != null;
 216                         }
 217                 }
 218
 219                 public bool NeedsEntryPoint {
 220                         get {
 221                                 return Target == Target.Exe || Target == Target.WinExe;
 222                         }
 223                 }
 224
 225                 public List<SourceFile> SourceFiles {
 226                         get {
 227                                 return source_files;
 228                         }
 229                 }
 230
 231                 #endregion
 232
 233                 public void AddConditionalSymbol (string symbol)
 234                 {
 235                         if (!conditional_symbols.Contains (symbol))
 236                                 conditional_symbols.Add (symbol);
 237                 }
 238
 239                 public void AddWarningAsError (int id)
 240                 {
 241                         if (warnings_as_error == null)
 242                                 warnings_as_error = new List<int> ();
 243
 244                         warnings_as_error.Add (id);
 245                 }
 246
 247                 public void AddWarningOnly (int id)
 248                 {
 249                         if (warnings_only == null)
 250                                 warnings_only = new List<int> ();
 251
 252                         warnings_only.Add (id);
 253                 }
 254
 255                 public bool IsConditionalSymbolDefined (string symbol)
 256                 {
 257                         return conditional_symbols.Contains (symbol);
 258                 }
 259
 260                 public bool IsWarningAsError (int code)
 261                 {
 262                         bool is_error = WarningsAreErrors;
 263
 264                         // Check specific list
 265                         if (warnings_as_error != null)
 266                                 is_error |= warnings_as_error.Contains (code);
 267
 268                         // Ignore excluded warnings
 269                         if (warnings_only != null && warnings_only.Contains (code))
 270                                 is_error = false;
 271
 272                         return is_error;
 273                 }
 274
 275                 public bool IsWarningEnabled (int code, int level)
 276                 {
 277                         if (WarningLevel < level)
 278                                 return false;
 279
 280                         return !IsWarningDisabledGlobally (code);
 281                 }
 282
 283                 public bool IsWarningDisabledGlobally (int code)
 284                 {
 285                         return warning_ignore_table != null && warning_ignore_table.Contains (code);
 286                 }
 287
 288                 public void SetIgnoreWarning (int code)
 289                 {
 290                         if (warning_ignore_table == null)
 291                                 warning_ignore_table = new HashSet<int> ();
 292
 293                         warning_ignore_table.Add (code);
 294                 }
 295         }
 296
 297         public class CommandLineParser
 298         {
 299                 enum ParseResult
 300                 {
 301                         Success,
 302                         Error,
 303                         Stop,
 304                         UnknownOption
 305                 }
 306
 307                 static readonly char[] argument_value_separator = { ';', ',' };
 308                 static readonly char[] numeric_value_separator = { ';', ',', ' ' };
 309
 310                 readonly TextWriter output;
 311                 readonly Report report;
 312                 bool stop_argument;
 313
 314                 Dictionary<string, int> source_file_index;
 315
 316                 public event Func<string[], int, int> UnknownOptionHandler;
 317
 318                 CompilerSettings parser_settings;
 319
 320                 public CommandLineParser (TextWriter errorOutput)
 321                         : this (errorOutput, Console.Out)
 322                 {
 323                 }
 324
 325                 public CommandLineParser (TextWriter errorOutput, TextWriter messagesOutput)
 326                 {
 327                         var rp = new StreamReportPrinter (errorOutput);
 328
 329                         parser_settings = new CompilerSettings ();
 330                         report = new Report (new CompilerContext (parser_settings, rp), rp);
 331                         this.output = messagesOutput;
 332                 }
 333
 334                 public bool HasBeenStopped {
 335                         get {
 336                                 return stop_argument;
 337                         }
 338                 }
 339
 340                 void About ()
 341                 {
 342                         output.WriteLine (
 343                                 "The Mono C# compiler is Copyright 2001-2011, Novell, Inc.\n\n" +
 344                                 "The compiler source code is released under the terms of the \n" +
 345                                 "MIT X11 or GNU GPL licenses\n\n" +
 346
 347                                 "For more information on Mono, visit the project Web site\n" +
 348                                 "   http://www.mono-project.com\n\n" +
 349
 350                                 "The compiler was written by Miguel de Icaza, Ravi Pratap, Martin Baulig, Marek Safar, Raja R Harinath, Atushi Enomoto");
 351                 }
 352
 353                 public CompilerSettings ParseArguments (string[] args)
 354                 {
 355                         CompilerSettings settings = new CompilerSettings ();
 356                         if (!ParseArguments (settings, args))
 357                                 return null;
 358
 359                         return settings;
 360                 }
 361
 362                 public bool ParseArguments (CompilerSettings settings, string[] args)
 363                 {
 364                         if (settings == null)
 365                                 throw new ArgumentNullException ("settings");
 366
 367                         List<string> response_file_list = null;
 368                         bool parsing_options = true;
 369                         stop_argument = false;
 370                         source_file_index = new Dictionary<string, int> ();
 371
 372                         for (int i = 0; i < args.Length; i++) {
 373                                 string arg = args[i];
 374                                 if (arg.Length == 0)
 375                                         continue;
 376
 377                                 if (arg[0] == '@') {
 378                                         string[] extra_args;
 379                                         string response_file = arg.Substring (1);
 380
 381                                         if (response_file_list == null)
 382                                                 response_file_list = new List<string> ();
 383
 384                                         if (response_file_list.Contains (response_file)) {
 385                                                 report.Error (1515, "Response file `{0}' specified multiple times", response_file);
 386                                                 return false;
 387                                         }
 388
 389                                         response_file_list.Add (response_file);
 390
 391                                         extra_args = LoadArgs (response_file);
 392                                         if (extra_args == null) {
 393                                                 report.Error (2011, "Unable to open response file: " + response_file);
 394                                                 return false;
 395                                         }
 396
 397                                         args = AddArgs (args, extra_args);
 398                                         continue;
 399                                 }
 400
 401                                 if (parsing_options) {
 402                                         if (arg == "--") {
 403                                                 parsing_options = false;
 404                                                 continue;
 405                                         }
 406
 407                                         bool dash_opt = arg[0] == '-';
 408                                         bool slash_opt = arg[0] == '/';
 409                                         if (dash_opt) {
 410                                                 switch (ParseOptionUnix (arg, ref args, ref i, settings)) {
 411                                                 case ParseResult.Error:
 412                                                 case ParseResult.Success:
 413                                                         continue;
 414                                                 case ParseResult.Stop:
 415                                                         stop_argument = true;
 416                                                         return true;
 417                                                 case ParseResult.UnknownOption:
 418                                                         if (UnknownOptionHandler != null) {
 419                                                                 var ret = UnknownOptionHandler (args, i);
 420                                                                 if (ret != -1) {
 421                                                                         i = ret;
 422                                                                         continue;
 423                                                                 }
 424                                                         }
 425                                                         break;
 426                                                 }
 427                                         }
 428
 429                                         if (dash_opt || slash_opt) {
 430                                                 // Try a -CSCOPTION
 431                                                 string csc_opt = dash_opt ? "/" + arg.Substring (1) : arg;
 432                                                 switch (ParseOption (csc_opt, ref args, settings)) {
 433                                                 case ParseResult.Error:
 434                                                 case ParseResult.Success:
 435                                                         continue;
 436                                                 case ParseResult.UnknownOption:
 437                                                         // Need to skip `/home/test.cs' however /test.cs is considered as error
 438                                                         if ((slash_opt && arg.Length > 3 && arg.IndexOf ('/', 2) > 0))
 439                                                                 break;
 440
 441                                                         if (UnknownOptionHandler != null) {
 442                                                                 var ret = UnknownOptionHandler (args, i);
 443                                                                 if (ret != -1) {
 444                                                                         i = ret;
 445                                                                         continue;
 446                                                                 }
 447                                                         }
 448
 449                                                         Error_WrongOption (arg);
 450                                                         return false;
 451
 452                                                 case ParseResult.Stop:
 453                                                         stop_argument = true;
 454                                                         return true;
 455                                                 }
 456                                         }
 457                                 }
 458
 459                                 ProcessSourceFiles (arg, false, settings.SourceFiles);
 460                         }
 461
 462                         return report.Errors == 0;
 463                 }
 464
 465                 void ProcessSourceFiles (string spec, bool recurse, List<SourceFile> sourceFiles)
 466                 {
 467                         string path, pattern;
 468
 469                         SplitPathAndPattern (spec, out path, out pattern);
 470                         if (pattern.IndexOf ('*') == -1) {
 471                                 AddSourceFile (spec, sourceFiles);
 472                                 return;
 473                         }
 474
 475                         string[] files;
 476                         try {
 477                                 files = Directory.GetFiles (path, pattern);
 478                         } catch (System.IO.DirectoryNotFoundException) {
 479                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 480                                 return;
 481                         } catch (System.IO.IOException) {
 482                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 483                                 return;
 484                         }
 485                         foreach (string f in files) {
 486                                 AddSourceFile (f, sourceFiles);
 487                         }
 488
 489                         if (!recurse)
 490                                 return;
 491
 492                         string[] dirs = null;
 493
 494                         try {
 495                                 dirs = Directory.GetDirectories (path);
 496                         } catch {
 497                         }
 498
 499                         foreach (string d in dirs) {
 500
 501                                 // Don't include path in this string, as each
 502                                 // directory entry already does
 503                                 ProcessSourceFiles (d + "/" + pattern, true, sourceFiles);
 504                         }
 505                 }
 506
 507                 static string[] AddArgs (string[] args, string[] extra_args)
 508                 {
 509                         string[] new_args;
 510                         new_args = new string[extra_args.Length + args.Length];
 511
 512                         // if args contains '--' we have to take that into account
 513                         // split args into first half and second half based on '--'
 514                         // and add the extra_args before --
 515                         int split_position = Array.IndexOf (args, "--");
 516                         if (split_position != -1) {
 517                                 Array.Copy (args, new_args, split_position);
 518                                 extra_args.CopyTo (new_args, split_position);
 519                                 Array.Copy (args, split_position, new_args, split_position + extra_args.Length, args.Length - split_position);
 520                         } else {
 521                                 args.CopyTo (new_args, 0);
 522                                 extra_args.CopyTo (new_args, args.Length);
 523                         }
 524
 525                         return new_args;
 526                 }
 527
 528                 void AddAssemblyReference (string alias, string assembly, CompilerSettings settings)
 529                 {
 530                         if (assembly.Length == 0) {
 531                                 report.Error (1680, "Invalid reference alias `{0}='. Missing filename", alias);
 532                                 return;
 533                         }
 534
 535                         if (!IsExternAliasValid (alias)) {
 536                                 report.Error (1679, "Invalid extern alias for -reference. Alias `{0}' is not a valid identifier", alias);
 537                                 return;
 538                         }
 539
 540                         settings.AssemblyReferencesAliases.Add (Tuple.Create (alias, assembly));
 541                 }
 542
 543                 void AddResource (AssemblyResource res, CompilerSettings settings)
 544                 {
 545                         if (settings.Resources == null) {
 546                                 settings.Resources = new List<AssemblyResource> ();
 547                                 settings.Resources.Add (res);
 548                                 return;
 549                         }
 550
 551                         if (settings.Resources.Contains (res)) {
 552                                 report.Error (1508, "The resource identifier `{0}' has already been used in this assembly", res.Name);
 553                                 return;
 554                         }
 555
 556                         settings.Resources.Add (res);
 557                 }
 558
 559                 void AddSourceFile (string fileName, List<SourceFile> sourceFiles)
 560                 {
 561                         string path = Path.GetFullPath (fileName);
 562
 563                         int index;
 564                         if (source_file_index.TryGetValue (path, out index)) {
 565                                 string other_name = sourceFiles[index - 1].Name;
 566                                 if (fileName.Equals (other_name))
 567                                         report.Warning (2002, 1, "Source file `{0}' specified multiple times", other_name);
 568                                 else
 569                                         report.Warning (2002, 1, "Source filenames `{0}' and `{1}' both refer to the same file: {2}", fileName, other_name, path);
 570
 571                                 return;
 572                         }
 573
 574                         var unit = new SourceFile (fileName, path, sourceFiles.Count + 1);
 575                         sourceFiles.Add (unit);
 576                         source_file_index.Add (path, unit.Index);
 577                 }
 578
 579                 public bool ProcessWarningsList (string text, Action<int> action)
 580                 {
 581                         bool valid = true;
 582                         foreach (string wid in text.Split (numeric_value_separator, StringSplitOptions.RemoveEmptyEntries)) {
 583                                 int id;
 584                                 if (!int.TryParse (wid, NumberStyles.AllowLeadingWhite, CultureInfo.InvariantCulture, out id)) {
 585                                         report.Error (1904, "`{0}' is not a valid warning number", wid);
 586                                         valid = false;
 587                                         continue;
 588                                 }
 589
 590                                 if (report.CheckWarningCode (id, Location.Null))
 591                                         action (id);
 592                         }
 593
 594                         return valid;
 595                 }
 596
 597                 void Error_RequiresArgument (string option)
 598                 {
 599                         report.Error (2006, "Missing argument for `{0}' option", option);
 600                 }
 601
 602                 void Error_RequiresFileName (string option)
 603                 {
 604                         report.Error (2005, "Missing file specification for `{0}' option", option);
 605                 }
 606
 607                 void Error_WrongOption (string option)
 608                 {
 609                         report.Error (2007, "Unrecognized command-line option: `{0}'", option);
 610                 }
 611
 612                 static bool IsExternAliasValid (string identifier)
 613                 {
 614                         return Tokenizer.IsValidIdentifier (identifier);
 615                 }
 616
 617                 static string[] LoadArgs (string file)
 618                 {
 619                         StreamReader f;
 620                         var args = new List<string> ();
 621                         string line;
 622                         try {
 623                                 f = new StreamReader (file);
 624                         } catch {
 625                                 return null;
 626                         }
 627
 628                         StringBuilder sb = new StringBuilder ();
 629
 630                         while ((line = f.ReadLine ()) != null) {
 631                                 int t = line.Length;
 632
 633                                 for (int i = 0; i < t; i++) {
 634                                         char c = line[i];
 635
 636                                         if (c == '"' || c == '\'') {
 637                                                 char end = c;
 638
 639                                                 for (i++; i < t; i++) {
 640                                                         c = line[i];
 641
 642                                                         if (c == end)
 643                                                                 break;
 644                                                         sb.Append (c);
 645                                                 }
 646                                         } else if (c == ' ') {
 647                                                 if (sb.Length > 0) {
 648                                                         args.Add (sb.ToString ());
 649                                                         sb.Length = 0;
 650                                                 }
 651                                         } else
 652                                                 sb.Append (c);
 653                                 }
 654                                 if (sb.Length > 0) {
 655                                         args.Add (sb.ToString ());
 656                                         sb.Length = 0;
 657                                 }
 658                         }
 659
 660                         return args.ToArray ();
 661                 }
 662
 663                 void OtherFlags ()
 664                 {
 665                         output.WriteLine (
 666                                 "Other flags in the compiler\n" +
 667                                 "   --fatal[=COUNT]    Makes error after COUNT fatal\n" +
 668                                 "   --lint             Enhanced warnings\n" +
 669                                 "   --metadata-only    Produced assembly will contain metadata only\n" +
 670                                 "   --parse            Only parses the source file\n" +
 671                                 "   --runtime:VERSION  Sets mscorlib.dll metadata version: v1, v2, v4\n" +
 672                                 "   --stacktrace       Shows stack trace at error location\n" +
 673                                 "   --timestamp        Displays time stamps of various compiler events\n" +
 674                                 "   -v                 Verbose parsing (for debugging the parser)\n" +
 675                                 "   --mcs-debug X      Sets MCS debugging level to X\n" +
 676                                 "   --break-on-ice     Breaks compilation on internal compiler error");
 677                 }
 678
 679                 //
 680                 // This parses the -arg and /arg options to the compiler, even if the strings
 681                 // in the following text use "/arg" on the strings.
 682                 //
 683                 ParseResult ParseOption (string option, ref string[] args, CompilerSettings settings)
 684                 {
 685                         int idx = option.IndexOf (':');
 686                         string arg, value;
 687
 688                         if (idx == -1) {
 689                                 arg = option;
 690                                 value = "";
 691                         } else {
 692                                 arg = option.Substring (0, idx);
 693
 694                                 value = option.Substring (idx + 1);
 695                         }
 696
 697                         switch (arg.ToLowerInvariant ()) {
 698                         case "/nologo":
 699                                 return ParseResult.Success;
 700
 701                         case "/t":
 702                         case "/target":
 703                                 switch (value) {
 704                                 case "exe":
 705                                         settings.Target = Target.Exe;
 706                                         break;
 707
 708                                 case "winexe":
 709                                         settings.Target = Target.WinExe;
 710                                         break;
 711
 712                                 case "library":
 713                                         settings.Target = Target.Library;
 714                                         settings.TargetExt = ".dll";
 715                                         break;
 716
 717                                 case "module":
 718                                         settings.Target = Target.Module;
 719                                         settings.TargetExt = ".netmodule";
 720                                         break;
 721
 722                                 default:
 723                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
 724                                         return ParseResult.Error;
 725                                 }
 726                                 return ParseResult.Success;
 727
 728                         case "/out":
 729                                 if (value.Length == 0) {
 730                                         Error_RequiresFileName (option);
 731                                         return ParseResult.Error;
 732                                 }
 733                                 settings.OutputFile = value;
 734                                 return ParseResult.Success;
 735
 736                         case "/o":
 737                         case "/o+":
 738                         case "/optimize":
 739                         case "/optimize+":
 740                                 settings.Optimize = true;
 741                                 return ParseResult.Success;
 742
 743                         case "/o-":
 744                         case "/optimize-":
 745                                 settings.Optimize = false;
 746                                 return ParseResult.Success;
 747
 748                         // TODO: Not supported by csc 3.5+
 749                         case "/incremental":
 750                         case "/incremental+":
 751                         case "/incremental-":
 752                                 // nothing.
 753                                 return ParseResult.Success;
 754
 755                         case "/d":
 756                         case "/define": {
 757                                         if (value.Length == 0) {
 758                                                 Error_RequiresArgument (option);
 759                                                 return ParseResult.Error;
 760                                         }
 761
 762                                         foreach (string d in value.Split (argument_value_separator)) {
 763                                                 string conditional = d.Trim ();
 764                                                 if (!Tokenizer.IsValidIdentifier (conditional)) {
 765                                                         report.Warning (2029, 1, "Invalid conditional define symbol `{0}'", conditional);
 766                                                         continue;
 767                                                 }
 768
 769                                                 settings.AddConditionalSymbol (conditional);
 770                                         }
 771                                         return ParseResult.Success;
 772                                 }
 773
 774                         case "/bugreport":
 775                                 //
 776                                 // We should collect data, runtime, etc and store in the file specified
 777                                 //
 778                                 output.WriteLine ("To file bug reports, please visit: http://www.mono-project.com/Bugs");
 779                                 return ParseResult.Success;
 780
 781                         case "/pkg": {
 782                                         string packages;
 783
 784                                         if (value.Length == 0) {
 785                                                 Error_RequiresArgument (option);
 786                                                 return ParseResult.Error;
 787                                         }
 788                                         packages = String.Join (" ", value.Split (new Char[] { ';', ',', '\n', '\r' }));
 789                                         string pkgout = Driver.GetPackageFlags (packages, report);
 790
 791                                         if (pkgout == null)
 792                                                 return ParseResult.Error;
 793
 794                                         string[] xargs = pkgout.Trim (new Char[] { ' ', '\n', '\r', '\t' }).Split (new Char[] { ' ', '\t' });
 795                                         args = AddArgs (args, xargs);
 796                                         return ParseResult.Success;
 797                                 }
 798
 799                         case "/linkres":
 800                         case "/linkresource":
 801                         case "/res":
 802                         case "/resource":
 803                                 AssemblyResource res = null;
 804                                 string[] s = value.Split (argument_value_separator, StringSplitOptions.RemoveEmptyEntries);
 805                                 switch (s.Length) {
 806                                 case 1:
 807                                         if (s[0].Length == 0)
 808                                                 goto default;
 809                                         res = new AssemblyResource (s[0], Path.GetFileName (s[0]));
 810                                         break;
 811                                 case 2:
 812                                         res = new AssemblyResource (s[0], s[1]);
 813                                         break;
 814                                 case 3:
 815                                         if (s[2] != "public" && s[2] != "private") {
 816                                                 report.Error (1906, "Invalid resource visibility option `{0}'. Use either `public' or `private' instead", s[2]);
 817                                                 return ParseResult.Error;
 818                                         }
 819                                         res = new AssemblyResource (s[0], s[1], s[2] == "private");
 820                                         break;
 821                                 default:
 822                                         report.Error (-2005, "Wrong number of arguments for option `{0}'", option);
 823                                         return ParseResult.Error;
 824                                 }
 825
 826                                 if (res != null) {
 827                                         res.IsEmbeded = arg[1] == 'r' || arg[1] == 'R';
 828                                         AddResource (res, settings);
 829                                 }
 830
 831                                 return ParseResult.Success;
 832
 833                         case "/recurse":
 834                                 if (value.Length == 0) {
 835                                         Error_RequiresFileName (option);
 836                                         return ParseResult.Error;
 837                                 }
 838                                 ProcessSourceFiles (value, true, settings.SourceFiles);
 839                                 return ParseResult.Success;
 840
 841                         case "/r":
 842                         case "/reference": {
 843                                         if (value.Length == 0) {
 844                                                 Error_RequiresFileName (option);
 845                                                 return ParseResult.Error;
 846                                         }
 847
 848                                         string[] refs = value.Split (argument_value_separator);
 849                                         foreach (string r in refs) {
 850                                                 if (r.Length == 0)
 851                                                         continue;
 852
 853                                                 string val = r;
 854                                                 int index = val.IndexOf ('=');
 855                                                 if (index > -1) {
 856                                                         string alias = r.Substring (0, index);
 857                                                         string assembly = r.Substring (index + 1);
 858                                                         AddAssemblyReference (alias, assembly, settings);
 859                                                         if (refs.Length != 1) {
 860                                                                 report.Error (2034, "Cannot specify multiple aliases using single /reference option");
 861                                                                 return ParseResult.Error;
 862                                                         }
 863                                                 } else {
 864                                                         settings.AssemblyReferences.Add (val);
 865                                                 }
 866                                         }
 867                                         return ParseResult.Success;
 868                                 }
 869                         case "/addmodule": {
 870                                         if (value.Length == 0) {
 871                                                 Error_RequiresFileName (option);
 872                                                 return ParseResult.Error;
 873                                         }
 874
 875                                         string[] refs = value.Split (argument_value_separator);
 876                                         foreach (string r in refs) {
 877                                                 settings.Modules.Add (r);
 878                                         }
 879                                         return ParseResult.Success;
 880                                 }
 881                         case "/win32res": {
 882                                         if (value.Length == 0) {
 883                                                 Error_RequiresFileName (option);
 884                                                 return ParseResult.Error;
 885                                         }
 886
 887                                         if (settings.Win32IconFile != null)
 888                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 889
 890                                         settings.Win32ResourceFile = value;
 891                                         return ParseResult.Success;
 892                                 }
 893                         case "/win32icon": {
 894                                         if (value.Length == 0) {
 895                                                 Error_RequiresFileName (option);
 896                                                 return ParseResult.Error;
 897                                         }
 898
 899                                         if (settings.Win32ResourceFile != null)
 900                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 901
 902                                         settings.Win32IconFile = value;
 903                                         return ParseResult.Success;
 904                                 }
 905                         case "/doc": {
 906                                         if (value.Length == 0) {
 907                                                 Error_RequiresFileName (option);
 908                                                 return ParseResult.Error;
 909                                         }
 910
 911                                         settings.DocumentationFile = value;
 912                                         return ParseResult.Success;
 913                                 }
 914                         case "/lib": {
 915                                         string[] libdirs;
 916
 917                                         if (value.Length == 0) {
 918                                                 return ParseResult.Error;
 919                                         }
 920
 921                                         libdirs = value.Split (argument_value_separator);
 922                                         foreach (string dir in libdirs)
 923                                                 settings.ReferencesLookupPaths.Add (dir);
 924                                         return ParseResult.Success;
 925                                 }
 926
 927                         case "/debug-":
 928                                 settings.GenerateDebugInfo = false;
 929                                 return ParseResult.Success;
 930
 931                         case "/debug":
 932                                 if (value.Equals ("full", StringComparison.OrdinalIgnoreCase) || value.Equals ("pdbonly", StringComparison.OrdinalIgnoreCase) || idx < 0) {
 933                                         settings.GenerateDebugInfo = true;
 934                                         return ParseResult.Success;
 935                                 }
 936
 937                                 if (value.Length > 0) {
 938                                         report.Error (1902, "Invalid debug option `{0}'. Valid options are `full' or `pdbonly'", value);
 939                                 } else {
 940                                         Error_RequiresArgument (option);
 941                                 }
 942
 943                                 return ParseResult.Error;
 944
 945                         case "/debug+":
 946                                 settings.GenerateDebugInfo = true;
 947                                 return ParseResult.Success;
 948
 949                         case "/checked":
 950                         case "/checked+":
 951                                 settings.Checked = true;
 952                                 return ParseResult.Success;
 953
 954                         case "/checked-":
 955                                 settings.Checked = false;
 956                                 return ParseResult.Success;
 957
 958                         case "/clscheck":
 959                         case "/clscheck+":
 960                                 settings.VerifyClsCompliance = true;
 961                                 return ParseResult.Success;
 962
 963                         case "/clscheck-":
 964                                 settings.VerifyClsCompliance = false;
 965                                 return ParseResult.Success;
 966
 967                         case "/unsafe":
 968                         case "/unsafe+":
 969                                 settings.Unsafe = true;
 970                                 return ParseResult.Success;
 971
 972                         case "/unsafe-":
 973                                 settings.Unsafe = false;
 974                                 return ParseResult.Success;
 975
 976                         case "/warnaserror":
 977                         case "/warnaserror+":
 978                                 if (value.Length == 0) {
 979                                         settings.WarningsAreErrors = true;
 980                                         parser_settings.WarningsAreErrors = true;
 981                                 } else {
 982                                         if (!ProcessWarningsList (value, settings.AddWarningAsError))
 983                                                 return ParseResult.Error;
 984                                 }
 985                                 return ParseResult.Success;
 986
 987                         case "/warnaserror-":
 988                                 if (value.Length == 0) {
 989                                         settings.WarningsAreErrors = false;
 990                                 } else {
 991                                         if (!ProcessWarningsList (value, settings.AddWarningOnly))
 992                                                 return ParseResult.Error;
 993                                 }
 994                                 return ParseResult.Success;
 995
 996                         case "/warn":
 997                         case "/w":
 998                                 if (value.Length == 0) {
 999                                         Error_RequiresArgument (option);
1000                                         return ParseResult.Error;
1001                                 }
1002
1003                                 SetWarningLevel (value, settings);
1004                                 return ParseResult.Success;
1005
1006                         case "/nowarn":
1007                                 if (value.Length == 0) {
1008                                         Error_RequiresArgument (option);
1009                                         return ParseResult.Error;
1010                                 }
1011
1012                                 if (!ProcessWarningsList (value, settings.SetIgnoreWarning))
1013                                         return ParseResult.Error;
1014
1015                                 return ParseResult.Success;
1016
1017                         case "/noconfig":
1018                                 settings.LoadDefaultReferences = false;
1019                                 return ParseResult.Success;
1020
1021                         case "/platform":
1022                                 if (value.Length == 0) {
1023                                         Error_RequiresArgument (option);
1024                                         return ParseResult.Error;
1025                                 }
1026
1027                                 switch (value.ToLowerInvariant ()) {
1028                                 case "arm":
1029                                         settings.Platform = Platform.Arm;
1030                                         break;
1031                                 case "anycpu":
1032                                         settings.Platform = Platform.AnyCPU;
1033                                         break;
1034                                 case "x86":
1035                                         settings.Platform = Platform.X86;
1036                                         break;
1037                                 case "x64":
1038                                         settings.Platform = Platform.X64;
1039                                         break;
1040                                 case "itanium":
1041                                         settings.Platform = Platform.IA64;
1042                                         break;
1043                                 case "anycpu32bitpreferred":
1044                                         settings.Platform = Platform.AnyCPU32Preferred;
1045                                         break;
1046                                 default:
1047                                         report.Error (1672, "Invalid -platform option `{0}'. Valid options are `anycpu', `anycpu32bitpreferred', `arm', `x86', `x64' or `itanium'",
1048                                                 value);
1049                                         return ParseResult.Error;
1050                                 }
1051
1052                                 return ParseResult.Success;
1053
1054                         case "/sdk":
1055                                 if (value.Length == 0) {
1056                                         Error_RequiresArgument (option);
1057                                         return ParseResult.Error;
1058                                 }
1059
1060                                 settings.SdkVersion = value;
1061                                 return ParseResult.Success;
1062
1063                         // We just ignore this.
1064                         case "/errorreport":
1065                         case "/filealign":
1066                                 if (value.Length == 0) {
1067                                         Error_RequiresArgument (option);
1068                                         return ParseResult.Error;
1069                                 }
1070
1071                                 return ParseResult.Success;
1072
1073                         case "/helpinternal":
1074                                 OtherFlags ();
1075                                 return ParseResult.Stop;
1076
1077                         case "/help":
1078                         case "/?":
1079                                 Usage ();
1080                                 return ParseResult.Stop;
1081
1082                         case "/main":
1083                         case "/m":
1084                                 if (value.Length == 0) {
1085                                         Error_RequiresArgument (option);
1086                                         return ParseResult.Error;
1087                                 }
1088                                 settings.MainClass = value;
1089                                 return ParseResult.Success;
1090
1091                         case "/nostdlib":
1092                         case "/nostdlib+":
1093                                 settings.StdLib = false;
1094                                 return ParseResult.Success;
1095
1096                         case "/nostdlib-":
1097                                 settings.StdLib = true;
1098                                 return ParseResult.Success;
1099
1100                         case "/fullpaths":
1101                                 settings.ShowFullPaths = true;
1102                                 return ParseResult.Success;
1103
1104                         case "/keyfile":
1105                                 if (value.Length == 0) {
1106                                         Error_RequiresFileName (option);
1107                                         return ParseResult.Error;
1108                                 }
1109
1110                                 settings.StrongNameKeyFile = value;
1111                                 return ParseResult.Success;
1112
1113                         case "/keycontainer":
1114                                 if (value.Length == 0) {
1115                                         Error_RequiresArgument (option);
1116                                         return ParseResult.Error;
1117                                 }
1118
1119                                 settings.StrongNameKeyContainer = value;
1120                                 return ParseResult.Success;
1121
1122                         case "/delaysign+":
1123                         case "/delaysign":
1124                                 settings.StrongNameDelaySign = true;
1125                                 return ParseResult.Success;
1126
1127                         case "/delaysign-":
1128                                 settings.StrongNameDelaySign = false;
1129                                 return ParseResult.Success;
1130
1131                         case "/langversion":
1132                                 if (value.Length == 0) {
1133                                         Error_RequiresArgument (option);
1134                                         return ParseResult.Error;
1135                                 }
1136
1137                                 switch (value.ToLowerInvariant ()) {
1138                                 case "iso-1":
1139                                         settings.Version = LanguageVersion.ISO_1;
1140                                         return ParseResult.Success;
1141                                 case "default":
1142                                         settings.Version = LanguageVersion.Default;
1143                                         return ParseResult.Success;
1144                                 case "iso-2":
1145                                         settings.Version = LanguageVersion.ISO_2;
1146                                         return ParseResult.Success;
1147                                 case "3":
1148                                         settings.Version = LanguageVersion.V_3;
1149                                         return ParseResult.Success;
1150                                 case "4":
1151                                         settings.Version = LanguageVersion.V_4;
1152                                         return ParseResult.Success;
1153                                 case "5":
1154                                         settings.Version = LanguageVersion.V_5;
1155                                         return ParseResult.Success;
1156                                 case "future":
1157                                         settings.Version = LanguageVersion.Future;
1158                                         return ParseResult.Success;
1159                                 }
1160
1161                                 report.Error (1617, "Invalid -langversion option `{0}'. It must be `ISO-1', `ISO-2', `3', `4', `5', `Default' or `Future'", value);
1162                                 return ParseResult.Error;
1163
1164                         case "/codepage":
1165                                 if (value.Length == 0) {
1166                                         Error_RequiresArgument (option);
1167                                         return ParseResult.Error;
1168                                 }
1169
1170                                 switch (value) {
1171                                 case "utf8":
1172                                         settings.Encoding = Encoding.UTF8;
1173                                         break;
1174                                 case "reset":
1175                                         settings.Encoding = Encoding.Default;
1176                                         break;
1177                                 default:
1178                                         try {
1179                                                 settings.Encoding = Encoding.GetEncoding (int.Parse (value));
1180                                         } catch {
1181                                                 report.Error (2016, "Code page `{0}' is invalid or not installed", value);
1182                                         }
1183                                         return ParseResult.Error;
1184                                 }
1185                                 return ParseResult.Success;
1186
1187                         case "runtimemetadataversion":
1188                                 if (value.Length == 0) {
1189                                         Error_RequiresArgument (option);
1190                                         return ParseResult.Error;
1191                                 }
1192
1193                                 settings.RuntimeMetadataVersion = value;
1194                                 return ParseResult.Success;
1195
1196                         default:
1197                                 return ParseResult.UnknownOption;
1198                         }
1199                 }
1200
1201                 //
1202                 // Currently handles the Unix-like command line options, but will be
1203                 // deprecated in favor of the CSCParseOption, which will also handle the
1204                 // options that start with a dash in the future.
1205                 //
1206                 ParseResult ParseOptionUnix (string arg, ref string[] args, ref int i, CompilerSettings settings)
1207                 {
1208                         switch (arg){
1209                         case "-v":
1210                                 settings.VerboseParserFlag++;
1211                                 return ParseResult.Success;
1212
1213                         case "--version":
1214                                 Version ();
1215                                 return ParseResult.Stop;
1216
1217                         case "--parse":
1218                                 settings.ParseOnly = true;
1219                                 return ParseResult.Success;
1220
1221                         case "--main": case "-m":
1222                                 report.Warning (-29, 1, "Compatibility: Use -main:CLASS instead of --main CLASS or -m CLASS");
1223                                 if ((i + 1) >= args.Length){
1224                                         Error_RequiresArgument (arg);
1225                                         return ParseResult.Error;
1226                                 }
1227                                 settings.MainClass = args[++i];
1228                                 return ParseResult.Success;
1229
1230                         case "--unsafe":
1231                                 report.Warning (-29, 1, "Compatibility: Use -unsafe instead of --unsafe");
1232                                 settings.Unsafe = true;
1233                                 return ParseResult.Success;
1234
1235                         case "/?": case "/h": case "/help":
1236                         case "--help":
1237                                 Usage ();
1238                                 return ParseResult.Stop;
1239
1240                         case "--define":
1241                                 report.Warning (-29, 1, "Compatibility: Use -d:SYMBOL instead of --define SYMBOL");
1242                                 if ((i + 1) >= args.Length){
1243                                         Error_RequiresArgument (arg);
1244                                         return ParseResult.Error;
1245                                 }
1246
1247                                 settings.AddConditionalSymbol (args [++i]);
1248                                 return ParseResult.Success;
1249
1250                         case "--tokenize":
1251                                 settings.TokenizeOnly = true;
1252                                 return ParseResult.Success;
1253
1254                         case "-o":
1255                         case "--output":
1256                                 report.Warning (-29, 1, "Compatibility: Use -out:FILE instead of --output FILE or -o FILE");
1257                                 if ((i + 1) >= args.Length){
1258                                         Error_RequiresArgument (arg);
1259                                         return ParseResult.Error;
1260                                 }
1261                                 settings.OutputFile = args[++i];
1262                                 return ParseResult.Success;
1263
1264                         case "--checked":
1265                                 report.Warning (-29, 1, "Compatibility: Use -checked instead of --checked");
1266                                 settings.Checked = true;
1267                                 return ParseResult.Success;
1268
1269                         case "--stacktrace":
1270                                 settings.Stacktrace = true;
1271                                 return ParseResult.Success;
1272
1273                         case "--linkresource":
1274                         case "--linkres":
1275                                 report.Warning (-29, 1, "Compatibility: Use -linkres:VALUE instead of --linkres VALUE");
1276                                 if ((i + 1) >= args.Length){
1277                                         Error_RequiresArgument (arg);
1278                                         return ParseResult.Error;
1279                                 }
1280
1281                                 AddResource (new AssemblyResource (args[++i], args[i]), settings);
1282                                 return ParseResult.Success;
1283
1284                         case "--resource":
1285                         case "--res":
1286                                 report.Warning (-29, 1, "Compatibility: Use -res:VALUE instead of --res VALUE");
1287                                 if ((i + 1) >= args.Length){
1288                                         Error_RequiresArgument (arg);
1289                                         return ParseResult.Error;
1290                                 }
1291
1292                                 AddResource (new AssemblyResource (args[++i], args[i], true), settings);
1293                                 return ParseResult.Success;
1294
1295                         case "--target":
1296                                 report.Warning (-29, 1, "Compatibility: Use -target:KIND instead of --target KIND");
1297                                 if ((i + 1) >= args.Length){
1298                                         Error_RequiresArgument (arg);
1299                                         return ParseResult.Error;
1300                                 }
1301
1302                                 string type = args [++i];
1303                                 switch (type){
1304                                 case "library":
1305                                         settings.Target = Target.Library;
1306                                         settings.TargetExt = ".dll";
1307                                         break;
1308
1309                                 case "exe":
1310                                         settings.Target = Target.Exe;
1311                                         break;
1312
1313                                 case "winexe":
1314                                         settings.Target = Target.WinExe;
1315                                         break;
1316
1317                                 case "module":
1318                                         settings.Target = Target.Module;
1319                                         settings.TargetExt = ".dll";
1320                                         break;
1321                                 default:
1322                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
1323                                         break;
1324                                 }
1325                                 return ParseResult.Success;
1326
1327                         case "-r":
1328                                 report.Warning (-29, 1, "Compatibility: Use -r:LIBRARY instead of -r library");
1329                                 if ((i + 1) >= args.Length){
1330                                         Error_RequiresArgument (arg);
1331                                         return ParseResult.Error;
1332                                 }
1333
1334                                 string val = args [++i];
1335                                 int idx = val.IndexOf ('=');
1336                                 if (idx > -1) {
1337                                         string alias = val.Substring (0, idx);
1338                                         string assembly = val.Substring (idx + 1);
1339                                         AddAssemblyReference (alias, assembly, settings);
1340                                         return ParseResult.Success;
1341                                 }
1342
1343                                 settings.AssemblyReferences.Add (val);
1344                                 return ParseResult.Success;
1345
1346                         case "-L":
1347                                 report.Warning (-29, 1, "Compatibility: Use -lib:ARG instead of --L arg");
1348                                 if ((i + 1) >= args.Length){
1349                                         Error_RequiresArgument (arg);
1350                                         return ParseResult.Error;
1351                                 }
1352                                 settings.ReferencesLookupPaths.Add (args [++i]);
1353                                 return ParseResult.Success;
1354
1355                         case "--lint":
1356                                 settings.EnhancedWarnings = true;
1357                                 return ParseResult.Success;
1358
1359                         case "--nostdlib":
1360                                 report.Warning (-29, 1, "Compatibility: Use -nostdlib instead of --nostdlib");
1361                                 settings.StdLib = false;
1362                                 return ParseResult.Success;
1363
1364                         case "--nowarn":
1365                                 report.Warning (-29, 1, "Compatibility: Use -nowarn instead of --nowarn");
1366                                 if ((i + 1) >= args.Length){
1367                                         Error_RequiresArgument (arg);
1368                                         return ParseResult.Error;
1369                                 }
1370                                 int warn = 0;
1371
1372                                 try {
1373                                         warn = int.Parse (args [++i]);
1374                                 } catch {
1375                                         Usage ();
1376                                         Environment.Exit (1);
1377                                 }
1378                                 settings.SetIgnoreWarning (warn);
1379                                 return ParseResult.Success;
1380
1381                         case "--wlevel":
1382                                 report.Warning (-29, 1, "Compatibility: Use -warn:LEVEL instead of --wlevel LEVEL");
1383                                 if ((i + 1) >= args.Length){
1384                                         Error_RequiresArgument (arg);
1385                                         return ParseResult.Error;
1386                                 }
1387
1388                                 SetWarningLevel (args [++i], settings);
1389                                 return ParseResult.Success;
1390
1391                         case "--mcs-debug":
1392                                 if ((i + 1) >= args.Length){
1393                                         Error_RequiresArgument (arg);
1394                                         return ParseResult.Error;
1395                                 }
1396
1397                                 try {
1398                                         settings.DebugFlags = int.Parse (args [++i]);
1399                                 } catch {
1400                                         Error_RequiresArgument (arg);
1401                                         return ParseResult.Error;
1402                                 }
1403
1404                                 return ParseResult.Success;
1405
1406                         case "--about":
1407                                 About ();
1408                                 return ParseResult.Stop;
1409
1410                         case "--recurse":
1411                                 report.Warning (-29, 1, "Compatibility: Use -recurse:PATTERN option instead --recurse PATTERN");
1412                                 if ((i + 1) >= args.Length){
1413                                         Error_RequiresArgument (arg);
1414                                         return ParseResult.Error;
1415                                 }
1416                                 ProcessSourceFiles (args [++i], true, settings.SourceFiles);
1417                                 return ParseResult.Success;
1418
1419                         case "--timestamp":
1420                                 settings.Timestamps = true;
1421                                 return ParseResult.Success;
1422
1423                         case "--debug": case "-g":
1424                                 report.Warning (-29, 1, "Compatibility: Use -debug option instead of -g or --debug");
1425                                 settings.GenerateDebugInfo = true;
1426                                 return ParseResult.Success;
1427
1428                         case "--noconfig":
1429                                 report.Warning (-29, 1, "Compatibility: Use -noconfig option instead of --noconfig");
1430                                 settings.LoadDefaultReferences = false;
1431                                 return ParseResult.Success;
1432
1433                         case "--metadata-only":
1434                                 settings.WriteMetadataOnly = true;
1435                                 return ParseResult.Success;
1436
1437                         case "--break-on-ice":
1438                                 settings.BreakOnInternalError = true;
1439                                 return ParseResult.Success;
1440
1441                         default:
1442                                 if (arg.StartsWith ("--fatal", StringComparison.Ordinal)){
1443                                         int fatal = 1;
1444                                         if (arg.StartsWith ("--fatal=", StringComparison.Ordinal))
1445                                                 int.TryParse (arg.Substring (8), out fatal);
1446
1447                                         settings.FatalCounter = fatal;
1448                                         return ParseResult.Success;
1449                                 }
1450                                 if (arg.StartsWith ("--runtime:", StringComparison.Ordinal)) {
1451                                         string version = arg.Substring (10);
1452
1453                                         switch (version) {
1454                                         case "v1":
1455                                         case "V1":
1456                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v1;
1457                                                 break;
1458                                         case "v2":
1459                                         case "V2":
1460                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v2;
1461                                                 break;
1462                                         case "v4":
1463                                         case "V4":
1464                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v4;
1465                                                 break;
1466                                         }
1467                                         return ParseResult.Success;
1468                                 }
1469
1470                                 return ParseResult.UnknownOption;
1471                         }
1472                 }
1473
1474                 void SetWarningLevel (string s, CompilerSettings settings)
1475                 {
1476                         int level = -1;
1477
1478                         try {
1479                                 level = int.Parse (s);
1480                         } catch {
1481                         }
1482                         if (level < 0 || level > 4) {
1483                                 report.Error (1900, "Warning level must be in the range 0-4");
1484                                 return;
1485                         }
1486                         settings.WarningLevel = level;
1487                 }
1488
1489                 //
1490                 // Given a path specification, splits the path from the file/pattern
1491                 //
1492                 static void SplitPathAndPattern (string spec, out string path, out string pattern)
1493                 {
1494                         int p = spec.LastIndexOf ('/');
1495                         if (p != -1) {
1496                                 //
1497                                 // Windows does not like /file.cs, switch that to:
1498                                 // "\", "file.cs"
1499                                 //
1500                                 if (p == 0) {
1501                                         path = "\\";
1502                                         pattern = spec.Substring (1);
1503                                 } else {
1504                                         path = spec.Substring (0, p);
1505                                         pattern = spec.Substring (p + 1);
1506                                 }
1507                                 return;
1508                         }
1509
1510                         p = spec.LastIndexOf ('\\');
1511                         if (p != -1) {
1512                                 path = spec.Substring (0, p);
1513                                 pattern = spec.Substring (p + 1);
1514                                 return;
1515                         }
1516
1517                         path = ".";
1518                         pattern = spec;
1519                 }
1520
1521                 void Usage ()
1522                 {
1523                         output.WriteLine (
1524                                 "Mono C# compiler, Copyright 2001-2011 Novell, Inc., Copyright 2011-2012 Xamarin, Inc\n" +
1525                                 "mcs [options] source-files\n" +
1526                                 "   --about              About the Mono C# compiler\n" +
1527                                 "   -addmodule:M1[,Mn]   Adds the module to the generated assembly\n" +
1528                                 "   -checked[+|-]        Sets default aritmetic overflow context\n" +
1529                                 "   -clscheck[+|-]       Disables CLS Compliance verifications\n" +
1530                                 "   -codepage:ID         Sets code page to the one in ID (number, utf8, reset)\n" +
1531                                 "   -define:S1[;S2]      Defines one or more conditional symbols (short: -d)\n" +
1532                                 "   -debug[+|-], -g      Generate debugging information\n" +
1533                                 "   -delaysign[+|-]      Only insert the public key into the assembly (no signing)\n" +
1534                                 "   -doc:FILE            Process documentation comments to XML file\n" +
1535                                 "   -fullpaths           Any issued error or warning uses absolute file path\n" +
1536                                 "   -help                Lists all compiler options (short: -?)\n" +
1537                                 "   -keycontainer:NAME   The key pair container used to sign the output assembly\n" +
1538                                 "   -keyfile:FILE        The key file used to strongname the ouput assembly\n" +
1539                                 "   -langversion:TEXT    Specifies language version: ISO-1, ISO-2, 3, 4, 5, Default or Future\n" +
1540                                 "   -lib:PATH1[,PATHn]   Specifies the location of referenced assemblies\n" +
1541                                 "   -main:CLASS          Specifies the class with the Main method (short: -m)\n" +
1542                                 "   -noconfig            Disables implicitly referenced assemblies\n" +
1543                                 "   -nostdlib[+|-]       Does not reference mscorlib.dll library\n" +
1544                                 "   -nowarn:W1[,Wn]      Suppress one or more compiler warnings\n" +
1545                                 "   -optimize[+|-]       Enables advanced compiler optimizations (short: -o)\n" +
1546                                 "   -out:FILE            Specifies output assembly name\n" +
1547                                 "   -pkg:P1[,Pn]         References packages P1..Pn\n" +
1548                                 "   -platform:ARCH       Specifies the target platform of the output assembly\n" +
1549                                 "                        ARCH can be one of: anycpu, anycpu32bitpreferred, arm,\n" +
1550                                 "                        x86, x64 or itanium. The default is anycpu.\n" +
1551                                 "   -recurse:SPEC        Recursively compiles files according to SPEC pattern\n" +
1552                                 "   -reference:A1[,An]   Imports metadata from the specified assembly (short: -r)\n" +
1553                                 "   -reference:ALIAS=A   Imports metadata using specified extern alias (short: -r)\n" +
1554                                 "   -sdk:VERSION         Specifies SDK version of referenced assemblies\n" +
1555                                 "                        VERSION can be one of: 2, 4, 4.5 (default) or a custom value\n" +
1556                                 "   -target:KIND         Specifies the format of the output assembly (short: -t)\n" +
1557                                 "                        KIND can be one of: exe, winexe, library, module\n" +
1558                                 "   -unsafe[+|-]         Allows to compile code which uses unsafe keyword\n" +
1559                                 "   -warnaserror[+|-]    Treats all warnings as errors\n" +
1560                                 "   -warnaserror[+|-]:W1[,Wn] Treats one or more compiler warnings as errors\n" +
1561                                 "   -warn:0-4            Sets warning level, the default is 4 (short -w:)\n" +
1562                                 "   -helpinternal        Shows internal and advanced compiler options\n" +
1563                                 "\n" +
1564                                 "Resources:\n" +
1565                                 "   -linkresource:FILE[,ID] Links FILE as a resource (short: -linkres)\n" +
1566                                 "   -resource:FILE[,ID]     Embed FILE as a resource (short: -res)\n" +
1567                                 "   -win32res:FILE          Specifies Win32 resource file (.res)\n" +
1568                                 "   -win32icon:FILE         Use this icon for the output\n" +
1569                                                                 "   @file                   Read response file for more options\n\n" +
1570                                 "Options can be of the form -option or /option");
1571                 }
1572
1573                 void Version ()
1574                 {
1575                         string version = System.Reflection.MethodBase.GetCurrentMethod ().DeclaringType.Assembly.GetName ().Version.ToString ();
1576                         output.WriteLine ("Mono C# compiler version {0}", version);
1577                 }
1578         }
1579
1580         public class RootContext
1581         {
1582                 //
1583                 // Contains the parsed tree
1584                 //
1585                 static ModuleContainer root;
1586
1587                 static public ModuleContainer ToplevelTypes {
1588                         get { return root; }
1589                         set { root = value; }
1590                 }
1591         }
1592 }