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                 V_7_3 = 73,
  36                 Experimental = 100,
  37
  38                 Default = V_7,
  39                 Latest = V_7_3
  40         }
  41
  42         public enum RuntimeVersion
  43         {
  44                 v1,
  45                 v2,
  46                 v4
  47         }
  48
  49         public enum Target
  50         {
  51                 Library, Exe, Module, WinExe
  52         }
  53
  54         public enum Platform
  55         {
  56                 AnyCPU,
  57                 AnyCPU32Preferred,
  58                 Arm,
  59                 X86,
  60                 X64,
  61                 IA64
  62         }
  63
  64         public class CompilerSettings
  65         {
  66                 public Target Target;
  67                 public Platform Platform;
  68                 public string TargetExt;
  69                 public bool VerifyClsCompliance;
  70                 public bool Optimize;
  71                 public LanguageVersion Version;
  72                 public bool EnhancedWarnings;
  73                 public bool LoadDefaultReferences;
  74                 public string SdkVersion;
  75
  76                 public string StrongNameKeyFile;
  77                 public string StrongNameKeyContainer;
  78                 public bool StrongNameDelaySign;
  79
  80                 public int TabSize;
  81
  82                 public bool WarningsAreErrors;
  83                 public int WarningLevel;
  84
  85                 //
  86                 // Assemblies references to be loaded
  87                 //
  88                 public List<string> AssemblyReferences;
  89
  90                 //
  91                 // External aliases for assemblies
  92                 //
  93                 public List<Tuple<string, string>> AssemblyReferencesAliases;
  94
  95                 public List<KeyValuePair<string, string>> PathMap;
  96
  97                 //
  98                 // Modules to be embedded
  99                 //
 100                 public List<string> Modules;
 101
 102                 //
 103                 // Lookup paths for referenced assemblies
 104                 //
 105                 public List<string> ReferencesLookupPaths;
 106
 107                 //
 108                 // Encoding.
 109                 //
 110                 public Encoding Encoding;
 111
 112                 //
 113                 // If set, enable XML documentation generation
 114                 //
 115                 public string DocumentationFile;
 116
 117                 public string MainClass;
 118
 119                 //
 120                 // Output file
 121                 //
 122                 public string OutputFile;
 123
 124                 //
 125                 // The default compiler checked state
 126                 //
 127                 public bool Checked;
 128
 129                 //
 130                 // If true, the compiler is operating in statement mode,
 131                 // this currently turns local variable declaration into
 132                 // static variables of a class
 133                 //
 134                 public bool StatementMode;      // TODO: SUPER UGLY
 135
 136                 //
 137                 // Whether to allow Unsafe code
 138                 //
 139                 public bool Unsafe;
 140
 141                 public string Win32ResourceFile;
 142                 public string Win32IconFile;
 143
 144                 //
 145                 // A list of resource files for embedding
 146                 //
 147                 public List<AssemblyResource> Resources;
 148
 149                 public bool GenerateDebugInfo;
 150
 151                 #region Compiler debug flags only
 152                 public bool ParseOnly, TokenizeOnly, Timestamps;
 153                 public int DebugFlags;
 154                 public int VerboseParserFlag;
 155                 public int FatalCounter;
 156                 public bool Stacktrace;
 157                 public bool BreakOnInternalError;
 158                 #endregion
 159
 160                 public List<string> GetResourceStrings;
 161
 162                 public bool ShowFullPaths;
 163
 164                 //
 165                 // Whether we are being linked against the standard libraries.
 166                 // This is only used to tell whether `System.Object' should
 167                 // have a base class or not.
 168                 //
 169                 public bool StdLib;
 170
 171                 public RuntimeVersion StdLibRuntimeVersion;
 172
 173                 public string RuntimeMetadataVersion;
 174
 175                 public bool WriteMetadataOnly;
 176
 177                 readonly List<string> conditional_symbols;
 178
 179                 readonly List<SourceFile> source_files;
 180
 181                 List<int> warnings_as_error;
 182                 List<int> warnings_only;
 183                 HashSet<int> warning_ignore_table;
 184
 185                 public CompilerSettings ()
 186                 {
 187                         StdLib = true;
 188                         Target = Target.Exe;
 189                         TargetExt = ".exe";
 190                         Platform = Platform.AnyCPU;
 191                         Version = LanguageVersion.Default;
 192                         VerifyClsCompliance = true;
 193                         Encoding = Encoding.UTF8;
 194                         LoadDefaultReferences = true;
 195                         StdLibRuntimeVersion = RuntimeVersion.v4;
 196                         WarningLevel = 4;
 197
 198                         // Default to 1 or mdb files would be platform speficic
 199                         TabSize = 1;
 200
 201                         AssemblyReferences = new List<string> ();
 202                         AssemblyReferencesAliases = new List<Tuple<string, string>> ();
 203                         Modules = new List<string> ();
 204                         ReferencesLookupPaths = new List<string> ();
 205
 206                         conditional_symbols = new List<string> ();
 207                         //
 208                         // Add default mcs define
 209                         //
 210                         conditional_symbols.Add ("__MonoCS__");
 211
 212                         source_files = new List<SourceFile> ();
 213                 }
 214
 215                 #region Properties
 216
 217                 public SourceFile FirstSourceFile {
 218                         get {
 219                                 return source_files.Count > 0 ? source_files [0] : null;
 220                         }
 221                 }
 222
 223                 public bool HasKeyFileOrContainer {
 224                         get {
 225                                 return StrongNameKeyFile != null || StrongNameKeyContainer != null;
 226                         }
 227                 }
 228
 229                 public bool NeedsEntryPoint {
 230                         get {
 231                                 return Target == Target.Exe || Target == Target.WinExe;
 232                         }
 233                 }
 234
 235                 public List<SourceFile> SourceFiles {
 236                         get {
 237                                 return source_files;
 238                         }
 239                 }
 240
 241                 #endregion
 242
 243                 public void AddConditionalSymbol (string symbol)
 244                 {
 245                         if (!conditional_symbols.Contains (symbol))
 246                                 conditional_symbols.Add (symbol);
 247                 }
 248
 249                 public void AddWarningAsError (int id)
 250                 {
 251                         if (warnings_as_error == null)
 252                                 warnings_as_error = new List<int> ();
 253
 254                         warnings_as_error.Add (id);
 255                 }
 256
 257                 public void AddWarningOnly (int id)
 258                 {
 259                         if (warnings_only == null)
 260                                 warnings_only = new List<int> ();
 261
 262                         warnings_only.Add (id);
 263                 }
 264
 265                 public bool IsConditionalSymbolDefined (string symbol)
 266                 {
 267                         return conditional_symbols.Contains (symbol);
 268                 }
 269
 270                 public bool IsWarningAsError (int code)
 271                 {
 272                         bool is_error = WarningsAreErrors;
 273
 274                         // Check specific list
 275                         if (warnings_as_error != null)
 276                                 is_error |= warnings_as_error.Contains (code);
 277
 278                         // Ignore excluded warnings
 279                         if (warnings_only != null && warnings_only.Contains (code))
 280                                 is_error = false;
 281
 282                         return is_error;
 283                 }
 284
 285                 public bool IsWarningEnabled (int code, int level)
 286                 {
 287                         if (WarningLevel < level)
 288                                 return false;
 289
 290                         return !IsWarningDisabledGlobally (code);
 291                 }
 292
 293                 public bool IsWarningDisabledGlobally (int code)
 294                 {
 295                         return warning_ignore_table != null && warning_ignore_table.Contains (code);
 296                 }
 297
 298                 public void SetIgnoreWarning (int code)
 299                 {
 300                         if (warning_ignore_table == null)
 301                                 warning_ignore_table = new HashSet<int> ();
 302
 303                         warning_ignore_table.Add (code);
 304                 }
 305         }
 306
 307         public class CommandLineParser
 308         {
 309                 enum ParseResult
 310                 {
 311                         Success,
 312                         Error,
 313                         Stop,
 314                         UnknownOption
 315                 }
 316
 317                 static readonly char[] argument_value_separator = { ';', ',' };
 318                 static readonly char[] numeric_value_separator = { ';', ',', ' ' };
 319
 320                 readonly TextWriter output;
 321                 readonly Report report;
 322                 bool stop_argument;
 323
 324                 Dictionary<string, int> source_file_index;
 325
 326                 public event Func<string[], int, int> UnknownOptionHandler;
 327
 328                 CompilerSettings parser_settings;
 329
 330                 public CommandLineParser (TextWriter errorOutput)
 331                         : this (errorOutput, Console.Out)
 332                 {
 333                 }
 334
 335                 public CommandLineParser (TextWriter errorOutput, TextWriter messagesOutput)
 336                 {
 337                         var rp = new StreamReportPrinter (errorOutput);
 338
 339                         parser_settings = new CompilerSettings ();
 340                         report = new Report (new CompilerContext (parser_settings, rp), rp);
 341                         this.output = messagesOutput;
 342                 }
 343
 344                 public bool HasBeenStopped {
 345                         get {
 346                                 return stop_argument;
 347                         }
 348                 }
 349
 350                 void About ()
 351                 {
 352                         output.WriteLine (
 353                                 "The Turbo C# compiler is Copyright 2001-2011, Novell, Inc. 2011-2016 Xamarin Inc, 2016-2017 Microsoft Corp\n\n" +
 354                                 "The compiler source code is released under the terms of the \n" +
 355                                 "MIT X11 or GNU GPL licenses\n\n" +
 356
 357                                 "For more information on Mono, visit the project Web site\n" +
 358                                 "   http://www.mono-project.com\n\n" +
 359
 360                                 "The compiler was written by Miguel de Icaza, Ravi Pratap, Martin Baulig, Marek Safar, Raja R Harinath, Atushi Enomoto");
 361                 }
 362
 363                 public CompilerSettings ParseArguments (string[] args)
 364                 {
 365                         CompilerSettings settings = new CompilerSettings ();
 366                         if (!ParseArguments (settings, args))
 367                                 return null;
 368
 369                         return settings;
 370                 }
 371
 372                 public bool ParseArguments (CompilerSettings settings, string[] args)
 373                 {
 374                         if (settings == null)
 375                                 throw new ArgumentNullException ("settings");
 376
 377                         List<string> response_file_list = null;
 378                         bool parsing_options = true;
 379                         stop_argument = false;
 380                         source_file_index = new Dictionary<string, int> ();
 381
 382                         for (int i = 0; i < args.Length; i++) {
 383                                 string arg = args[i];
 384                                 if (arg.Length == 0)
 385                                         continue;
 386
 387                                 if (arg[0] == '@') {
 388                                         string[] extra_args;
 389                                         string response_file = arg.Substring (1);
 390
 391                                         if (response_file_list == null)
 392                                                 response_file_list = new List<string> ();
 393
 394                                         if (response_file_list.Contains (response_file)) {
 395                                                 report.Error (1515, "Response file `{0}' specified multiple times", response_file);
 396                                                 return false;
 397                                         }
 398
 399                                         response_file_list.Add (response_file);
 400
 401                                         extra_args = LoadArgs (response_file);
 402                                         if (extra_args == null) {
 403                                                 report.Error (2011, "Unable to open response file: " + response_file);
 404                                                 return false;
 405                                         }
 406
 407                                         args = AddArgs (args, extra_args);
 408                                         continue;
 409                                 }
 410
 411                                 if (parsing_options) {
 412                                         if (arg == "--") {
 413                                                 parsing_options = false;
 414                                                 continue;
 415                                         }
 416
 417                                         bool dash_opt = arg[0] == '-';
 418                                         bool slash_opt = arg[0] == '/';
 419                                         if (dash_opt) {
 420                                                 switch (ParseOptionUnix (arg, ref args, ref i, settings)) {
 421                                                 case ParseResult.Error:
 422                                                 case ParseResult.Success:
 423                                                         continue;
 424                                                 case ParseResult.Stop:
 425                                                         stop_argument = true;
 426                                                         return true;
 427                                                 case ParseResult.UnknownOption:
 428                                                         if (UnknownOptionHandler != null) {
 429                                                                 var ret = UnknownOptionHandler (args, i);
 430                                                                 if (ret != -1) {
 431                                                                         i = ret;
 432                                                                         continue;
 433                                                                 }
 434                                                         }
 435                                                         break;
 436                                                 }
 437                                         }
 438
 439                                         if (dash_opt || slash_opt) {
 440                                                 // Try a -CSCOPTION
 441                                                 string csc_opt = dash_opt ? "/" + arg.Substring (1) : arg;
 442                                                 switch (ParseOption (csc_opt, ref args, settings)) {
 443                                                 case ParseResult.Error:
 444                                                 case ParseResult.Success:
 445                                                         continue;
 446                                                 case ParseResult.UnknownOption:
 447                                                         // Need to skip `/home/test.cs' however /test.cs is considered as error
 448                                                         if ((slash_opt && arg.Length > 3 && arg.IndexOf ('/', 2) > 0))
 449                                                                 break;
 450
 451                                                         if (UnknownOptionHandler != null) {
 452                                                                 var ret = UnknownOptionHandler (args, i);
 453                                                                 if (ret != -1) {
 454                                                                         i = ret;
 455                                                                         continue;
 456                                                                 }
 457                                                         }
 458
 459                                                         Error_WrongOption (arg);
 460                                                         return false;
 461
 462                                                 case ParseResult.Stop:
 463                                                         stop_argument = true;
 464                                                         return true;
 465                                                 }
 466                                         }
 467                                 }
 468
 469                                 ProcessSourceFiles (arg, false, settings.SourceFiles);
 470                         }
 471
 472                         return report.Errors == 0;
 473                 }
 474
 475                 void ProcessSourceFiles (string spec, bool recurse, List<SourceFile> sourceFiles)
 476                 {
 477                         string path, pattern;
 478
 479                         SplitPathAndPattern (spec, out path, out pattern);
 480                         if (pattern.IndexOf ('*') == -1) {
 481                                 AddSourceFile (spec, sourceFiles);
 482                                 return;
 483                         }
 484
 485                         string[] files;
 486                         try {
 487                                 files = Directory.GetFiles (path, pattern);
 488                         } catch (System.IO.DirectoryNotFoundException) {
 489                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 490                                 return;
 491                         } catch (System.IO.IOException) {
 492                                 report.Error (2001, "Source file `" + spec + "' could not be found");
 493                                 return;
 494                         }
 495                         foreach (string f in files) {
 496                                 AddSourceFile (f, sourceFiles);
 497                         }
 498
 499                         if (!recurse)
 500                                 return;
 501
 502                         string[] dirs = null;
 503
 504                         try {
 505                                 dirs = Directory.GetDirectories (path);
 506                         } catch {
 507                         }
 508
 509                         foreach (string d in dirs) {
 510
 511                                 // Don't include path in this string, as each
 512                                 // directory entry already does
 513                                 ProcessSourceFiles (d + "/" + pattern, true, sourceFiles);
 514                         }
 515                 }
 516
 517                 static string[] AddArgs (string[] args, string[] extra_args)
 518                 {
 519                         string[] new_args;
 520                         new_args = new string[extra_args.Length + args.Length];
 521
 522                         // if args contains '--' we have to take that into account
 523                         // split args into first half and second half based on '--'
 524                         // and add the extra_args before --
 525                         int split_position = Array.IndexOf (args, "--");
 526                         if (split_position != -1) {
 527                                 Array.Copy (args, new_args, split_position);
 528                                 extra_args.CopyTo (new_args, split_position);
 529                                 Array.Copy (args, split_position, new_args, split_position + extra_args.Length, args.Length - split_position);
 530                         } else {
 531                                 args.CopyTo (new_args, 0);
 532                                 extra_args.CopyTo (new_args, args.Length);
 533                         }
 534
 535                         return new_args;
 536                 }
 537
 538                 void AddAssemblyReference (string alias, string assembly, CompilerSettings settings)
 539                 {
 540                         if (assembly.Length == 0) {
 541                                 report.Error (1680, "Invalid reference alias `{0}='. Missing filename", alias);
 542                                 return;
 543                         }
 544
 545                         if (!IsExternAliasValid (alias)) {
 546                                 report.Error (1679, "Invalid extern alias for -reference. Alias `{0}' is not a valid identifier", alias);
 547                                 return;
 548                         }
 549
 550                         settings.AssemblyReferencesAliases.Add (Tuple.Create (alias, assembly));
 551                 }
 552
 553                 void AddResource (AssemblyResource res, CompilerSettings settings)
 554                 {
 555                         if (settings.Resources == null) {
 556                                 settings.Resources = new List<AssemblyResource> ();
 557                                 settings.Resources.Add (res);
 558                                 return;
 559                         }
 560
 561                         if (settings.Resources.Contains (res)) {
 562                                 report.Error (1508, "The resource identifier `{0}' has already been used in this assembly", res.Name);
 563                                 return;
 564                         }
 565
 566                         settings.Resources.Add (res);
 567                 }
 568
 569                 void AddSourceFile (string fileName, List<SourceFile> sourceFiles)
 570                 {
 571                         string path = Path.GetFullPath (fileName);
 572
 573                         int index;
 574                         if (source_file_index.TryGetValue (path, out index)) {
 575                                 string other_name = sourceFiles[index - 1].Name;
 576                                 if (fileName.Equals (other_name))
 577                                         report.Warning (2002, 1, "Source file `{0}' specified multiple times", other_name);
 578                                 else
 579                                         report.Warning (2002, 1, "Source filenames `{0}' and `{1}' both refer to the same file: {2}", fileName, other_name, path);
 580
 581                                 return;
 582                         }
 583
 584                         var unit = new SourceFile (fileName, path, sourceFiles.Count + 1);
 585                         sourceFiles.Add (unit);
 586                         source_file_index.Add (path, unit.Index);
 587                 }
 588
 589                 public bool ProcessWarningsList (string text, Action<int> action)
 590                 {
 591                         foreach (string wid in text.Split (numeric_value_separator, StringSplitOptions.RemoveEmptyEntries)) {
 592                                 var warning = wid;
 593                                 if (warning.Length == 6 && warning [0] == 'C' && warning [1] == 'S')
 594                                         warning = warning.Substring (2);
 595
 596                                 int id;
 597                                 if (!int.TryParse (warning, NumberStyles.AllowLeadingWhite, CultureInfo.InvariantCulture, out id)) {
 598                                         continue;
 599                                 }
 600
 601                                 action (id);
 602                         }
 603
 604                         return true;
 605                 }
 606
 607                 void Error_RequiresArgument (string option)
 608                 {
 609                         report.Error (2006, "Missing argument for `{0}' option", option);
 610                 }
 611
 612                 void Error_RequiresFileName (string option)
 613                 {
 614                         report.Error (2005, "Missing file specification for `{0}' option", option);
 615                 }
 616
 617                 void Error_WrongOption (string option)
 618                 {
 619                         report.Error (2007, "Unrecognized command-line option: `{0}'", option);
 620                 }
 621
 622                 static bool IsExternAliasValid (string identifier)
 623                 {
 624                         return Tokenizer.IsValidIdentifier (identifier);
 625                 }
 626
 627                 static string[] LoadArgs (string file)
 628                 {
 629                         StreamReader f;
 630                         var args = new List<string> ();
 631                         string line;
 632                         try {
 633                                 f = new StreamReader (file);
 634                         } catch {
 635                                 return null;
 636                         }
 637
 638                         StringBuilder sb = new StringBuilder ();
 639
 640                         while ((line = f.ReadLine ()) != null) {
 641                                 int t = line.Length;
 642
 643                                 for (int i = 0; i < t; i++) {
 644                                         char c = line[i];
 645
 646                                         if (c == '"' || c == '\'') {
 647                                                 char end = c;
 648
 649                                                 for (i++; i < t; i++) {
 650                                                         c = line[i];
 651
 652                                                         if (c == end)
 653                                                                 break;
 654                                                         sb.Append (c);
 655                                                 }
 656                                         } else if (c == ' ') {
 657                                                 if (sb.Length > 0) {
 658                                                         args.Add (sb.ToString ());
 659                                                         sb.Length = 0;
 660                                                 }
 661                                         } else
 662                                                 sb.Append (c);
 663                                 }
 664                                 if (sb.Length > 0) {
 665                                         args.Add (sb.ToString ());
 666                                         sb.Length = 0;
 667                                 }
 668                         }
 669
 670                         return args.ToArray ();
 671                 }
 672
 673                 void OtherFlags ()
 674                 {
 675                         output.WriteLine (
 676                                 "Other flags in the compiler\n" +
 677                                 "   --fatal[=COUNT]    Makes error after COUNT fatal\n" +
 678                                 "   --lint             Enhanced warnings\n" +
 679                                 "   --metadata-only    Produced assembly will contain metadata only\n" +
 680                                 "   --parse            Only parses the source file\n" +
 681                                 "   --runtime:VERSION  Sets mscorlib.dll metadata version: v1, v2, v4\n" +
 682                                 "   --stacktrace       Shows stack trace at error location\n" +
 683                                 "   --timestamp        Displays time stamps of various compiler events\n" +
 684                                 "   -v                 Verbose parsing (for debugging the parser)\n" +
 685                                 "   --mcs-debug X      Sets MCS debugging level to X\n" +
 686                                 "   --break-on-ice     Breaks compilation on internal compiler error");
 687                 }
 688
 689                 //
 690                 // This parses the -arg and /arg options to the compiler, even if the strings
 691                 // in the following text use "/arg" on the strings.
 692                 //
 693                 ParseResult ParseOption (string option, ref string[] args, CompilerSettings settings)
 694                 {
 695                         int idx = option.IndexOf (':');
 696                         string arg, value;
 697
 698                         if (idx == -1) {
 699                                 arg = option;
 700                                 value = "";
 701                         } else {
 702                                 arg = option.Substring (0, idx);
 703
 704                                 value = option.Substring (idx + 1);
 705                         }
 706
 707                         switch (arg.ToLowerInvariant ()) {
 708                         case "/nologo":
 709                                 return ParseResult.Success;
 710
 711                         case "/t":
 712                         case "/target":
 713                                 switch (value) {
 714                                 case "exe":
 715                                         settings.Target = Target.Exe;
 716                                         break;
 717
 718                                 case "winexe":
 719                                         settings.Target = Target.WinExe;
 720                                         break;
 721
 722                                 case "library":
 723                                         settings.Target = Target.Library;
 724                                         settings.TargetExt = ".dll";
 725                                         break;
 726
 727                                 case "module":
 728                                         settings.Target = Target.Module;
 729                                         settings.TargetExt = ".netmodule";
 730                                         break;
 731
 732                                 default:
 733                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
 734                                         return ParseResult.Error;
 735                                 }
 736                                 return ParseResult.Success;
 737
 738                         case "/out":
 739                                 if (value.Length == 0) {
 740                                         Error_RequiresFileName (option);
 741                                         return ParseResult.Error;
 742                                 }
 743                                 settings.OutputFile = value;
 744                                 return ParseResult.Success;
 745
 746                         case "/o":
 747                         case "/o+":
 748                         case "/optimize":
 749                         case "/optimize+":
 750                                 settings.Optimize = true;
 751                                 return ParseResult.Success;
 752
 753                         case "/o-":
 754                         case "/optimize-":
 755                                 settings.Optimize = false;
 756                                 return ParseResult.Success;
 757
 758                         // TODO: Not supported by csc 3.5+
 759                         case "/incremental":
 760                         case "/incremental+":
 761                         case "/incremental-":
 762                                 // nothing.
 763                                 return ParseResult.Success;
 764
 765                         case "/d":
 766                         case "/define": {
 767                                         if (value.Length == 0) {
 768                                                 Error_RequiresArgument (option);
 769                                                 return ParseResult.Error;
 770                                         }
 771
 772                                         foreach (string d in value.Split (argument_value_separator)) {
 773                                                 string conditional = d.Trim ();
 774                                                 if (!Tokenizer.IsValidIdentifier (conditional)) {
 775                                                         report.Warning (2029, 1, "Invalid conditional define symbol `{0}'", conditional);
 776                                                         continue;
 777                                                 }
 778
 779                                                 settings.AddConditionalSymbol (conditional);
 780                                         }
 781                                         return ParseResult.Success;
 782                                 }
 783
 784                         case "/bugreport":
 785                                 //
 786                                 // We should collect data, runtime, etc and store in the file specified
 787                                 //
 788                                 output.WriteLine ("To file bug reports, please visit: http://www.mono-project.com/Bugs");
 789                                 return ParseResult.Success;
 790
 791                         case "/pkg": {
 792                                         string packages;
 793
 794                                         if (value.Length == 0) {
 795                                                 Error_RequiresArgument (option);
 796                                                 return ParseResult.Error;
 797                                         }
 798                                         packages = String.Join (" ", value.Split (new Char[] { ';', ',', '\n', '\r' }));
 799                                         string pkgout = Driver.GetPackageFlags (packages, report);
 800
 801                                         if (pkgout == null)
 802                                                 return ParseResult.Error;
 803
 804                                         string[] xargs = pkgout.Trim (new Char[] { ' ', '\n', '\r', '\t' }).Split (new Char[] { ' ', '\t' });
 805                                         args = AddArgs (args, xargs);
 806                                         return ParseResult.Success;
 807                                 }
 808
 809                         case "/linkres":
 810                         case "/linkresource":
 811                         case "/res":
 812                         case "/resource":
 813                                 AssemblyResource res = null;
 814                                 string[] s = value.Split (argument_value_separator, StringSplitOptions.RemoveEmptyEntries);
 815                                 switch (s.Length) {
 816                                 case 1:
 817                                         if (s[0].Length == 0)
 818                                                 goto default;
 819                                         res = new AssemblyResource (s[0], Path.GetFileName (s[0]));
 820                                         break;
 821                                 case 2:
 822                                         res = new AssemblyResource (s[0], s[1]);
 823                                         break;
 824                                 case 3:
 825                                         if (s[2] != "public" && s[2] != "private") {
 826                                                 report.Error (1906, "Invalid resource visibility option `{0}'. Use either `public' or `private' instead", s[2]);
 827                                                 return ParseResult.Error;
 828                                         }
 829                                         res = new AssemblyResource (s[0], s[1], s[2] == "private");
 830                                         break;
 831                                 default:
 832                                         report.Error (-2005, "Wrong number of arguments for option `{0}'", option);
 833                                         return ParseResult.Error;
 834                                 }
 835
 836                                 if (res != null) {
 837                                         res.IsEmbeded = arg[1] == 'r' || arg[1] == 'R';
 838                                         AddResource (res, settings);
 839                                 }
 840
 841                                 return ParseResult.Success;
 842
 843                         case "/recurse":
 844                                 if (value.Length == 0) {
 845                                         Error_RequiresFileName (option);
 846                                         return ParseResult.Error;
 847                                 }
 848                                 ProcessSourceFiles (value, true, settings.SourceFiles);
 849                                 return ParseResult.Success;
 850
 851                         case "/r":
 852                         case "/reference": {
 853                                         if (value.Length == 0) {
 854                                                 Error_RequiresFileName (option);
 855                                                 return ParseResult.Error;
 856                                         }
 857
 858                                         string[] refs = value.Split (argument_value_separator);
 859                                         foreach (string r in refs) {
 860                                                 if (r.Length == 0)
 861                                                         continue;
 862
 863                                                 string val = r;
 864                                                 int index = val.IndexOf ('=');
 865                                                 if (index > -1) {
 866                                                         string alias = r.Substring (0, index);
 867                                                         string assembly = r.Substring (index + 1);
 868                                                         AddAssemblyReference (alias, assembly, settings);
 869                                                         if (refs.Length != 1) {
 870                                                                 report.Error (2034, "Cannot specify multiple aliases using single /reference option");
 871                                                                 return ParseResult.Error;
 872                                                         }
 873                                                 } else {
 874                                                         settings.AssemblyReferences.Add (val);
 875                                                 }
 876                                         }
 877                                         return ParseResult.Success;
 878                                 }
 879                         case "/addmodule": {
 880                                         if (value.Length == 0) {
 881                                                 Error_RequiresFileName (option);
 882                                                 return ParseResult.Error;
 883                                         }
 884
 885                                         string[] refs = value.Split (argument_value_separator);
 886                                         foreach (string r in refs) {
 887                                                 settings.Modules.Add (r);
 888                                         }
 889                                         return ParseResult.Success;
 890                                 }
 891                         case "/win32res": {
 892                                         if (value.Length == 0) {
 893                                                 Error_RequiresFileName (option);
 894                                                 return ParseResult.Error;
 895                                         }
 896
 897                                         if (settings.Win32IconFile != null)
 898                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 899
 900                                         settings.Win32ResourceFile = value;
 901                                         return ParseResult.Success;
 902                                 }
 903                         case "/win32icon": {
 904                                         if (value.Length == 0) {
 905                                                 Error_RequiresFileName (option);
 906                                                 return ParseResult.Error;
 907                                         }
 908
 909                                         if (settings.Win32ResourceFile != null)
 910                                                 report.Error (1565, "Cannot specify the `win32res' and the `win32ico' compiler option at the same time");
 911
 912                                         settings.Win32IconFile = value;
 913                                         return ParseResult.Success;
 914                                 }
 915                         case "/doc": {
 916                                         if (value.Length == 0) {
 917                                                 Error_RequiresFileName (option);
 918                                                 return ParseResult.Error;
 919                                         }
 920
 921                                         settings.DocumentationFile = value;
 922                                         return ParseResult.Success;
 923                                 }
 924                         case "/lib": {
 925                                         string[] libdirs;
 926
 927                                         if (value.Length == 0) {
 928                                                 return ParseResult.Error;
 929                                         }
 930
 931                                         libdirs = value.Split (argument_value_separator);
 932                                         foreach (string dir in libdirs)
 933                                                 settings.ReferencesLookupPaths.Add (dir);
 934                                         return ParseResult.Success;
 935                                 }
 936
 937                         case "/debug-":
 938                                 settings.GenerateDebugInfo = false;
 939                                 return ParseResult.Success;
 940
 941                         case "/debug":
 942                                 if (value.Equals ("full", StringComparison.OrdinalIgnoreCase) || value.Equals ("pdbonly", StringComparison.OrdinalIgnoreCase) || value.Equals ("portable", StringComparison.OrdinalIgnoreCase) || idx < 0) {
 943                                         settings.GenerateDebugInfo = true;
 944                                         return ParseResult.Success;
 945                                 }
 946
 947                                 if (value.Length > 0) {
 948                                         report.Error (1902, "Invalid debug option `{0}'. Valid options are `full' or `pdbonly'", value);
 949                                 } else {
 950                                         Error_RequiresArgument (option);
 951                                 }
 952
 953                                 return ParseResult.Error;
 954
 955                         case "/debug+":
 956                                 settings.GenerateDebugInfo = true;
 957                                 return ParseResult.Success;
 958
 959                         case "/checked":
 960                         case "/checked+":
 961                                 settings.Checked = true;
 962                                 return ParseResult.Success;
 963
 964                         case "/checked-":
 965                                 settings.Checked = false;
 966                                 return ParseResult.Success;
 967
 968                         case "/clscheck":
 969                         case "/clscheck+":
 970                                 settings.VerifyClsCompliance = true;
 971                                 return ParseResult.Success;
 972
 973                         case "/clscheck-":
 974                                 settings.VerifyClsCompliance = false;
 975                                 return ParseResult.Success;
 976
 977                         case "/unsafe":
 978                         case "/unsafe+":
 979                                 settings.Unsafe = true;
 980                                 return ParseResult.Success;
 981
 982                         case "/unsafe-":
 983                                 settings.Unsafe = false;
 984                                 return ParseResult.Success;
 985
 986                         case "/warnaserror":
 987                         case "/warnaserror+":
 988                                 if (value.Length == 0) {
 989                                         settings.WarningsAreErrors = true;
 990                                         parser_settings.WarningsAreErrors = true;
 991                                 } else {
 992                                         if (!ProcessWarningsList (value, settings.AddWarningAsError))
 993                                                 return ParseResult.Error;
 994                                 }
 995                                 return ParseResult.Success;
 996
 997                         case "/warnaserror-":
 998                                 if (value.Length == 0) {
 999                                         settings.WarningsAreErrors = false;
1000                                 } else {
1001                                         if (!ProcessWarningsList (value, settings.AddWarningOnly))
1002                                                 return ParseResult.Error;
1003                                 }
1004                                 return ParseResult.Success;
1005
1006                         case "/warn":
1007                         case "/w":
1008                                 if (value.Length == 0) {
1009                                         Error_RequiresArgument (option);
1010                                         return ParseResult.Error;
1011                                 }
1012
1013                                 SetWarningLevel (value, settings);
1014                                 return ParseResult.Success;
1015
1016                         case "/nowarn":
1017                                 if (value.Length == 0) {
1018                                         Error_RequiresArgument (option);
1019                                         return ParseResult.Error;
1020                                 }
1021
1022                                 if (!ProcessWarningsList (value, settings.SetIgnoreWarning))
1023                                         return ParseResult.Error;
1024
1025                                 return ParseResult.Success;
1026
1027                         case "/noconfig":
1028                                 settings.LoadDefaultReferences = false;
1029                                 return ParseResult.Success;
1030
1031                         case "/platform":
1032                                 if (value.Length == 0) {
1033                                         Error_RequiresArgument (option);
1034                                         return ParseResult.Error;
1035                                 }
1036
1037                                 switch (value.ToLowerInvariant ()) {
1038                                 case "arm":
1039                                         settings.Platform = Platform.Arm;
1040                                         break;
1041                                 case "anycpu":
1042                                         settings.Platform = Platform.AnyCPU;
1043                                         break;
1044                                 case "x86":
1045                                         settings.Platform = Platform.X86;
1046                                         break;
1047                                 case "x64":
1048                                         settings.Platform = Platform.X64;
1049                                         break;
1050                                 case "itanium":
1051                                         settings.Platform = Platform.IA64;
1052                                         break;
1053                                 case "anycpu32bitpreferred":
1054                                         settings.Platform = Platform.AnyCPU32Preferred;
1055                                         break;
1056                                 default:
1057                                         report.Error (1672, "Invalid -platform option `{0}'. Valid options are `anycpu', `anycpu32bitpreferred', `arm', `x86', `x64' or `itanium'",
1058                                                 value);
1059                                         return ParseResult.Error;
1060                                 }
1061
1062                                 return ParseResult.Success;
1063
1064                         case "/sdk":
1065                                 if (value.Length == 0) {
1066                                         Error_RequiresArgument (option);
1067                                         return ParseResult.Error;
1068                                 }
1069
1070                                 settings.SdkVersion = value;
1071                                 return ParseResult.Success;
1072
1073                         // We just ignore this.
1074                         case "/errorreport":
1075                         case "/filealign":
1076                                 if (value.Length == 0) {
1077                                         Error_RequiresArgument (option);
1078                                         return ParseResult.Error;
1079                                 }
1080
1081                                 return ParseResult.Success;
1082
1083                         case "/helpinternal":
1084                                 OtherFlags ();
1085                                 return ParseResult.Stop;
1086
1087                         case "/help":
1088                         case "/?":
1089                                 Usage ();
1090                                 return ParseResult.Stop;
1091
1092                         case "/main":
1093                         case "/m":
1094                                 if (value.Length == 0) {
1095                                         Error_RequiresArgument (option);
1096                                         return ParseResult.Error;
1097                                 }
1098                                 settings.MainClass = value;
1099                                 return ParseResult.Success;
1100
1101                         case "/nostdlib":
1102                         case "/nostdlib+":
1103                                 settings.StdLib = false;
1104                                 return ParseResult.Success;
1105
1106                         case "/nostdlib-":
1107                                 settings.StdLib = true;
1108                                 return ParseResult.Success;
1109
1110                         case "/fullpaths":
1111                                 settings.ShowFullPaths = true;
1112                                 return ParseResult.Success;
1113
1114                         case "/keyfile":
1115                                 if (value.Length == 0) {
1116                                         Error_RequiresFileName (option);
1117                                         return ParseResult.Error;
1118                                 }
1119
1120                                 settings.StrongNameKeyFile = value;
1121                                 return ParseResult.Success;
1122
1123                         case "/keycontainer":
1124                                 if (value.Length == 0) {
1125                                         Error_RequiresArgument (option);
1126                                         return ParseResult.Error;
1127                                 }
1128
1129                                 settings.StrongNameKeyContainer = value;
1130                                 return ParseResult.Success;
1131
1132                         case "/delaysign+":
1133                         case "/delaysign":
1134                                 settings.StrongNameDelaySign = true;
1135                                 return ParseResult.Success;
1136
1137                         case "/delaysign-":
1138                                 settings.StrongNameDelaySign = false;
1139                                 return ParseResult.Success;
1140
1141                         case "/langversion":
1142                                 if (value.Length == 0) {
1143                                         Error_RequiresArgument (option);
1144                                         return ParseResult.Error;
1145                                 }
1146
1147                                 switch (value.ToLowerInvariant ()) {
1148                                 case "iso-1":
1149                                 case "1":
1150                                 case "1.0":
1151                                         settings.Version = LanguageVersion.ISO_1;
1152                                         return ParseResult.Success;
1153                                 case "default":
1154                                         settings.Version = LanguageVersion.Default;
1155                                         return ParseResult.Success;
1156                                 case "2":
1157                                 case "2.0":
1158                                 case "iso-2":
1159                                         settings.Version = LanguageVersion.ISO_2;
1160                                         return ParseResult.Success;
1161                                 case "3":
1162                                 case "3.0":
1163                                         settings.Version = LanguageVersion.V_3;
1164                                         return ParseResult.Success;
1165                                 case "4":
1166                                 case "4.0":
1167                                         settings.Version = LanguageVersion.V_4;
1168                                         return ParseResult.Success;
1169                                 case "5":
1170                                 case "5.0":
1171                                         settings.Version = LanguageVersion.V_5;
1172                                         return ParseResult.Success;
1173                                 case "6":
1174                                 case "6.0":
1175                                         settings.Version = LanguageVersion.V_6;
1176                                         return ParseResult.Success;
1177                                 case "7":
1178                                 case "7.0":
1179                                         settings.Version = LanguageVersion.V_7;
1180                                         return ParseResult.Success;
1181                                 case "7.1":
1182                                         settings.Version = LanguageVersion.V_7_1;
1183                                         return ParseResult.Success;
1184                                 case "7.2":
1185                                         settings.Version = LanguageVersion.V_7_2;
1186                                         return ParseResult.Success;
1187                                 case "latest":
1188                                         settings.Version = LanguageVersion.Latest;
1189                                         return ParseResult.Success;
1190                                 case "experimental":
1191                                         settings.Version = LanguageVersion.Experimental;
1192                                         return ParseResult.Success;
1193                                 }
1194
1195                                 if (value.StartsWith ("0", StringComparison.Ordinal)) {
1196                                         report.Error (8303, "Specified language version `{0}' cannot have leading zeroes", value);
1197                                 } else {
1198                                         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);
1199                                 }
1200
1201                                 return ParseResult.Error;
1202
1203                         case "/codepage":
1204                                 if (value.Length == 0) {
1205                                         Error_RequiresArgument (option);
1206                                         return ParseResult.Error;
1207                                 }
1208
1209                                 switch (value) {
1210                                 case "utf8":
1211                                         settings.Encoding = Encoding.UTF8;
1212                                         break;
1213                                 case "reset":
1214                                         settings.Encoding = Encoding.Default;
1215                                         break;
1216                                 default:
1217                                         try {
1218                                                 settings.Encoding = Encoding.GetEncoding (int.Parse (value));
1219                                         } catch {
1220                                                 report.Error (2016, "Code page `{0}' is invalid or not installed", value);
1221                                         }
1222                                         return ParseResult.Error;
1223                                 }
1224                                 return ParseResult.Success;
1225
1226                         case "/runtimemetadataversion":
1227                                 if (value.Length == 0) {
1228                                         Error_RequiresArgument (option);
1229                                         return ParseResult.Error;
1230                                 }
1231
1232                                 settings.RuntimeMetadataVersion = value;
1233                                 return ParseResult.Success;
1234
1235                         case "/pathmap":
1236                                 if (value.Length == 0) {
1237                                         return ParseResult.Success;
1238                                 }
1239
1240                                 foreach (var pair in value.Split (',')) {
1241                                         var kv = pair.Split ('=');
1242                                         if (kv.Length != 2) {
1243                                                 report.Error (8101, "The pathmap option was incorrectly formatted");
1244                                                 return ParseResult.Error;
1245                                         }
1246
1247                                         if (settings.PathMap == null)
1248                                                 settings.PathMap = new List<KeyValuePair<string, string>> ();
1249
1250                                         var key = kv [0].TrimEnd (Path.DirectorySeparatorChar);
1251                                         var path = kv [1].TrimEnd (Path.DirectorySeparatorChar);
1252                                         if (key.Length == 0 || path.Length == 0)
1253                                                 report.Error (8101, "The pathmap option was incorrectly formatted");
1254
1255                                         settings.PathMap.Add (new KeyValuePair<string, string> (key, path));
1256                                 }
1257
1258                                 return ParseResult.Success;
1259
1260                         // csc options that we don't support
1261                         case "/analyzer":
1262                         case "/appconfig":
1263                         case "/baseaddress":
1264                         case "/deterministic":
1265                         case "/deterministic+":
1266                         case "/deterministic-":
1267                         case "/errorendlocation":
1268                         case "/errorlog":
1269                         case "/features":
1270                         case "/highentropyva":
1271                         case "/highentropyva+":
1272                         case "/highentropyva-":
1273                         case "/link":
1274                         case "/sourcelink":
1275                         case "/moduleassemblyname":
1276                         case "/nowin32manifest":
1277                         case "/pdb":
1278                         case "/preferreduilang":
1279                         case "/publicsign":
1280                         case "/publicsign+":
1281                         case "/publicsign-":
1282                         case "/reportanalyzer":
1283                         case "/ruleset":
1284                         case "/sqmsessionguid":
1285                         case "/subsystemversion":
1286                         case "/utf8output":
1287                         case "/win32manifest":
1288                                 return ParseResult.Success;
1289
1290                         default:
1291                                 return ParseResult.UnknownOption;
1292                         }
1293                 }
1294
1295                 //
1296                 // Currently handles the Unix-like command line options, but will be
1297                 // deprecated in favor of the CSCParseOption, which will also handle the
1298                 // options that start with a dash in the future.
1299                 //
1300                 ParseResult ParseOptionUnix (string arg, ref string[] args, ref int i, CompilerSettings settings)
1301                 {
1302                         switch (arg){
1303                         case "-v":
1304                                 settings.VerboseParserFlag++;
1305                                 return ParseResult.Success;
1306
1307                         case "--version":
1308                                 Version ();
1309                                 return ParseResult.Stop;
1310
1311                         case "--parse":
1312                                 settings.ParseOnly = true;
1313                                 return ParseResult.Success;
1314
1315                         case "--main": case "-m":
1316                                 report.Warning (-29, 1, "Compatibility: Use -main:CLASS instead of --main CLASS or -m CLASS");
1317                                 if ((i + 1) >= args.Length){
1318                                         Error_RequiresArgument (arg);
1319                                         return ParseResult.Error;
1320                                 }
1321                                 settings.MainClass = args[++i];
1322                                 return ParseResult.Success;
1323
1324                         case "--unsafe":
1325                                 report.Warning (-29, 1, "Compatibility: Use -unsafe instead of --unsafe");
1326                                 settings.Unsafe = true;
1327                                 return ParseResult.Success;
1328
1329                         case "/?": case "/h": case "/help":
1330                         case "--help":
1331                                 Usage ();
1332                                 return ParseResult.Stop;
1333
1334                         case "--define":
1335                                 report.Warning (-29, 1, "Compatibility: Use -d:SYMBOL instead of --define SYMBOL");
1336                                 if ((i + 1) >= args.Length){
1337                                         Error_RequiresArgument (arg);
1338                                         return ParseResult.Error;
1339                                 }
1340
1341                                 settings.AddConditionalSymbol (args [++i]);
1342                                 return ParseResult.Success;
1343
1344                         case "--tokenize":
1345                                 settings.TokenizeOnly = true;
1346                                 return ParseResult.Success;
1347
1348                         case "-o":
1349                         case "--output":
1350                                 report.Warning (-29, 1, "Compatibility: Use -out:FILE instead of --output FILE or -o FILE");
1351                                 if ((i + 1) >= args.Length){
1352                                         Error_RequiresArgument (arg);
1353                                         return ParseResult.Error;
1354                                 }
1355                                 settings.OutputFile = args[++i];
1356                                 return ParseResult.Success;
1357
1358                         case "--checked":
1359                                 report.Warning (-29, 1, "Compatibility: Use -checked instead of --checked");
1360                                 settings.Checked = true;
1361                                 return ParseResult.Success;
1362
1363                         case "--stacktrace":
1364                                 settings.Stacktrace = true;
1365                                 return ParseResult.Success;
1366
1367                         case "--linkresource":
1368                         case "--linkres":
1369                                 report.Warning (-29, 1, "Compatibility: Use -linkres:VALUE instead of --linkres VALUE");
1370                                 if ((i + 1) >= args.Length){
1371                                         Error_RequiresArgument (arg);
1372                                         return ParseResult.Error;
1373                                 }
1374
1375                                 AddResource (new AssemblyResource (args[++i], args[i]), settings);
1376                                 return ParseResult.Success;
1377
1378                         case "--resource":
1379                         case "--res":
1380                                 report.Warning (-29, 1, "Compatibility: Use -res:VALUE instead of --res VALUE");
1381                                 if ((i + 1) >= args.Length){
1382                                         Error_RequiresArgument (arg);
1383                                         return ParseResult.Error;
1384                                 }
1385
1386                                 AddResource (new AssemblyResource (args[++i], args[i], true), settings);
1387                                 return ParseResult.Success;
1388
1389                         case "--target":
1390                                 report.Warning (-29, 1, "Compatibility: Use -target:KIND instead of --target KIND");
1391                                 if ((i + 1) >= args.Length){
1392                                         Error_RequiresArgument (arg);
1393                                         return ParseResult.Error;
1394                                 }
1395
1396                                 string type = args [++i];
1397                                 switch (type){
1398                                 case "library":
1399                                         settings.Target = Target.Library;
1400                                         settings.TargetExt = ".dll";
1401                                         break;
1402
1403                                 case "exe":
1404                                         settings.Target = Target.Exe;
1405                                         break;
1406
1407                                 case "winexe":
1408                                         settings.Target = Target.WinExe;
1409                                         break;
1410
1411                                 case "module":
1412                                         settings.Target = Target.Module;
1413                                         settings.TargetExt = ".dll";
1414                                         break;
1415                                 default:
1416                                         report.Error (2019, "Invalid target type for -target. Valid options are `exe', `winexe', `library' or `module'");
1417                                         break;
1418                                 }
1419                                 return ParseResult.Success;
1420
1421                         case "-r":
1422                                 report.Warning (-29, 1, "Compatibility: Use -r:LIBRARY instead of -r library");
1423                                 if ((i + 1) >= args.Length){
1424                                         Error_RequiresArgument (arg);
1425                                         return ParseResult.Error;
1426                                 }
1427
1428                                 string val = args [++i];
1429                                 int idx = val.IndexOf ('=');
1430                                 if (idx > -1) {
1431                                         string alias = val.Substring (0, idx);
1432                                         string assembly = val.Substring (idx + 1);
1433                                         AddAssemblyReference (alias, assembly, settings);
1434                                         return ParseResult.Success;
1435                                 }
1436
1437                                 settings.AssemblyReferences.Add (val);
1438                                 return ParseResult.Success;
1439
1440                         case "-L":
1441                                 report.Warning (-29, 1, "Compatibility: Use -lib:ARG instead of --L arg");
1442                                 if ((i + 1) >= args.Length){
1443                                         Error_RequiresArgument (arg);
1444                                         return ParseResult.Error;
1445                                 }
1446                                 settings.ReferencesLookupPaths.Add (args [++i]);
1447                                 return ParseResult.Success;
1448
1449                         case "--lint":
1450                                 settings.EnhancedWarnings = true;
1451                                 return ParseResult.Success;
1452
1453                         case "--nostdlib":
1454                                 report.Warning (-29, 1, "Compatibility: Use -nostdlib instead of --nostdlib");
1455                                 settings.StdLib = false;
1456                                 return ParseResult.Success;
1457
1458                         case "--nowarn":
1459                                 report.Warning (-29, 1, "Compatibility: Use -nowarn instead of --nowarn");
1460                                 if ((i + 1) >= args.Length){
1461                                         Error_RequiresArgument (arg);
1462                                         return ParseResult.Error;
1463                                 }
1464                                 int warn = 0;
1465
1466                                 try {
1467                                         warn = int.Parse (args [++i]);
1468                                 } catch {
1469                                         Usage ();
1470                                         Environment.Exit (1);
1471                                 }
1472                                 settings.SetIgnoreWarning (warn);
1473                                 return ParseResult.Success;
1474
1475                         case "--wlevel":
1476                                 report.Warning (-29, 1, "Compatibility: Use -warn:LEVEL instead of --wlevel LEVEL");
1477                                 if ((i + 1) >= args.Length){
1478                                         Error_RequiresArgument (arg);
1479                                         return ParseResult.Error;
1480                                 }
1481
1482                                 SetWarningLevel (args [++i], settings);
1483                                 return ParseResult.Success;
1484
1485                         case "--mcs-debug":
1486                                 if ((i + 1) >= args.Length){
1487                                         Error_RequiresArgument (arg);
1488                                         return ParseResult.Error;
1489                                 }
1490
1491                                 try {
1492                                         settings.DebugFlags = int.Parse (args [++i]);
1493                                 } catch {
1494                                         Error_RequiresArgument (arg);
1495                                         return ParseResult.Error;
1496                                 }
1497
1498                                 return ParseResult.Success;
1499
1500                         case "--about":
1501                                 About ();
1502                                 return ParseResult.Stop;
1503
1504                         case "--recurse":
1505                                 report.Warning (-29, 1, "Compatibility: Use -recurse:PATTERN option instead --recurse PATTERN");
1506                                 if ((i + 1) >= args.Length){
1507                                         Error_RequiresArgument (arg);
1508                                         return ParseResult.Error;
1509                                 }
1510                                 ProcessSourceFiles (args [++i], true, settings.SourceFiles);
1511                                 return ParseResult.Success;
1512
1513                         case "--timestamp":
1514                                 settings.Timestamps = true;
1515                                 return ParseResult.Success;
1516
1517                         case "--debug": case "-g":
1518                                 report.Warning (-29, 1, "Compatibility: Use -debug option instead of -g or --debug");
1519                                 settings.GenerateDebugInfo = true;
1520                                 return ParseResult.Success;
1521
1522                         case "--noconfig":
1523                                 report.Warning (-29, 1, "Compatibility: Use -noconfig option instead of --noconfig");
1524                                 settings.LoadDefaultReferences = false;
1525                                 return ParseResult.Success;
1526
1527                         case "--metadata-only":
1528                                 settings.WriteMetadataOnly = true;
1529                                 return ParseResult.Success;
1530
1531                         case "--break-on-ice":
1532                                 settings.BreakOnInternalError = true;
1533                                 return ParseResult.Success;
1534
1535                         default:
1536                                 if (arg.StartsWith ("--fatal", StringComparison.Ordinal)) {
1537                                         int fatal = 1;
1538                                         if (arg.StartsWith ("--fatal=", StringComparison.Ordinal))
1539                                                 int.TryParse (arg.Substring (8), out fatal);
1540
1541                                         settings.FatalCounter = fatal;
1542                                         return ParseResult.Success;
1543                                 }
1544                                 if (arg.StartsWith ("--runtime:", StringComparison.Ordinal)) {
1545                                         string version = arg.Substring (10);
1546
1547                                         switch (version) {
1548                                         case "v1":
1549                                         case "V1":
1550                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v1;
1551                                                 break;
1552                                         case "v2":
1553                                         case "V2":
1554                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v2;
1555                                                 break;
1556                                         case "v4":
1557                                         case "V4":
1558                                                 settings.StdLibRuntimeVersion = RuntimeVersion.v4;
1559                                                 break;
1560                                         }
1561                                         return ParseResult.Success;
1562                                 }
1563
1564                                 if (arg.StartsWith ("--getresourcestrings:", StringComparison.Ordinal)) {
1565                                         string file = arg.Substring (21).Trim ();
1566                                         if (file.Length < 1) {
1567                                                 Error_RequiresArgument (arg);
1568                                                 return ParseResult.Error;
1569                                         }
1570
1571                                         if (settings.GetResourceStrings == null)
1572                                                 settings.GetResourceStrings = new List<string> ();
1573
1574                                         settings.GetResourceStrings.Add (file);
1575                                         return ParseResult.Success;
1576                                 }
1577
1578                                 return ParseResult.UnknownOption;
1579                         }
1580                 }
1581
1582                 void SetWarningLevel (string s, CompilerSettings settings)
1583                 {
1584                         int level = -1;
1585
1586                         try {
1587                                 level = int.Parse (s);
1588                         } catch {
1589                         }
1590                         if (level < 0 || level > 4) {
1591                                 report.Error (1900, "Warning level must be in the range 0-4");
1592                                 return;
1593                         }
1594                         settings.WarningLevel = level;
1595                 }
1596
1597                 //
1598                 // Given a path specification, splits the path from the file/pattern
1599                 //
1600                 static void SplitPathAndPattern (string spec, out string path, out string pattern)
1601                 {
1602                         int p = spec.LastIndexOf ('/');
1603                         if (p != -1) {
1604                                 //
1605                                 // Windows does not like /file.cs, switch that to:
1606                                 // "\", "file.cs"
1607                                 //
1608                                 if (p == 0) {
1609                                         path = "\\";
1610                                         pattern = spec.Substring (1);
1611                                 } else {
1612                                         path = spec.Substring (0, p);
1613                                         pattern = spec.Substring (p + 1);
1614                                 }
1615                                 return;
1616                         }
1617
1618                         p = spec.LastIndexOf ('\\');
1619                         if (p != -1) {
1620                                 path = spec.Substring (0, p);
1621                                 pattern = spec.Substring (p + 1);
1622                                 return;
1623                         }
1624
1625                         path = ".";
1626                         pattern = spec;
1627                 }
1628
1629                 void Usage ()
1630                 {
1631                         output.WriteLine (
1632                                 "Turbo C# compiler, Copyright 2001-2011 Novell, Inc., 2011-2016 Xamarin, Inc, 2016-2017 Microsoft Corp\n" +
1633                                 "mcs [options] source-files\n" +
1634                                 "   --about              About the Mono C# compiler\n" +
1635                                 "   -addmodule:M1[,Mn]   Adds the module to the generated assembly\n" +
1636                                 "   -checked[+|-]        Sets default aritmetic overflow context\n" +
1637                                 "   -clscheck[+|-]       Disables CLS Compliance verifications\n" +
1638                                 "   -codepage:ID         Sets code page to the one in ID (number, utf8, reset)\n" +
1639                                 "   -define:S1[;S2]      Defines one or more conditional symbols (short: -d)\n" +
1640                                 "   -debug[+|-], -g      Generate debugging information\n" +
1641                                 "   -delaysign[+|-]      Only insert the public key into the assembly (no signing)\n" +
1642                                 "   -doc:FILE            Process documentation comments to XML file\n" +
1643                                 "   -fullpaths           Any issued error or warning uses absolute file path\n" +
1644                                 "   -help                Lists all compiler options (short: -?)\n" +
1645                                 "   -keycontainer:NAME   The key pair container used to sign the output assembly\n" +
1646                                 "   -keyfile:FILE        The key file used to strongname the ouput assembly\n" +
1647                                 "   -langversion:TEXT    Specifies language version: ISO-1, ISO-2, 3, 4, 5, 6, Default or Experimental\n" +
1648                                 "   -lib:PATH1[,PATHn]   Specifies the location of referenced assemblies\n" +
1649                                 "   -main:CLASS          Specifies the class with the Main method (short: -m)\n" +
1650                                 "   -noconfig            Disables implicitly referenced assemblies\n" +
1651                                 "   -nostdlib[+|-]       Does not reference mscorlib.dll library\n" +
1652                                 "   -nowarn:W1[,Wn]      Suppress one or more compiler warnings\n" +
1653                                 "   -optimize[+|-]       Enables advanced compiler optimizations (short: -o)\n" +
1654                                 "   -out:FILE            Specifies output assembly name\n" +
1655                                 "   -pathmap:K=V[,Kn=Vn] Sets a mapping for source path names used in generated output\n" +
1656                                 "   -pkg:P1[,Pn]         References packages P1..Pn\n" +
1657                                 "   -platform:ARCH       Specifies the target platform of the output assembly\n" +
1658                                 "                        ARCH can be one of: anycpu, anycpu32bitpreferred, arm,\n" +
1659                                 "                        x86, x64 or itanium. The default is anycpu.\n" +
1660                                 "   -recurse:SPEC        Recursively compiles files according to SPEC pattern\n" +
1661                                 "   -reference:A1[,An]   Imports metadata from the specified assembly (short: -r)\n" +
1662                                 "   -reference:ALIAS=A   Imports metadata using specified extern alias (short: -r)\n" +
1663                                 "   -sdk:VERSION         Specifies SDK version of referenced assemblies\n" +
1664                                 "                        VERSION can be one of: 2, 4, 4.5, 4.x (default) or a custom value\n" +
1665                                 "   -target:KIND         Specifies the format of the output assembly (short: -t)\n" +
1666                                 "                        KIND can be one of: exe, winexe, library, module\n" +
1667                                 "   -unsafe[+|-]         Allows to compile code which uses unsafe keyword\n" +
1668                                 "   -warnaserror[+|-]    Treats all warnings as errors\n" +
1669                                 "   -warnaserror[+|-]:W1[,Wn] Treats one or more compiler warnings as errors\n" +
1670                                 "   -warn:0-4            Sets warning level, the default is 4 (short -w:)\n" +
1671                                 "   -helpinternal        Shows internal and advanced compiler options\n" +
1672                                 "\n" +
1673                                 "Resources:\n" +
1674                                 "   -linkresource:FILE[,ID] Links FILE as a resource (short: -linkres)\n" +
1675                                 "   -resource:FILE[,ID]     Embed FILE as a resource (short: -res)\n" +
1676                                 "   -win32res:FILE          Specifies Win32 resource file (.res)\n" +
1677                                 "   -win32icon:FILE         Use this icon for the output\n" +
1678                                                                 "   @file                   Read response file for more options\n\n" +
1679                                 "Options can be of the form -option or /option");
1680                 }
1681
1682                 void Version ()
1683                 {
1684                         string version = System.Reflection.MethodBase.GetCurrentMethod ().DeclaringType.Assembly.GetName ().Version.ToString ();
1685                         output.WriteLine ("Mono C# compiler version {0}", version);
1686                 }
1687         }
1688
1689         public class RootContext
1690         {
1691                 //
1692                 // Contains the parsed tree
1693                 //
1694                 static ModuleContainer root;
1695
1696                 static public ModuleContainer ToplevelTypes {
1697                         get { return root; }
1698                         set { root = value; }
1699                 }
1700         }
1701 }