mcs/mcs/driver.cs

   1 //
   2 // driver.cs: The compiler command line driver.
   3 //
   4 // Author: Miguel de Icaza (miguel@gnu.org)
   5 //
   6 // Licensed under the terms of the GNU GPL
   7 //
   8 // (C) 2001 Ximian, Inc (http://www.ximian.com)
   9 //
  10
  11 namespace Mono.CSharp
  12 {
  13         using System;
  14         using System.Reflection;
  15         using System.Reflection.Emit;
  16         using System.Collections;
  17         using System.IO;
  18         using Mono.Languages;
  19
  20         /// <summary>
  21         ///    The compiler driver.
  22         /// </summary>
  23         public class Driver
  24         {
  25                 enum Target {
  26                         Library, Exe, Module, WinExe
  27                 };
  28
  29                 //
  30                 // Assemblies references to be linked.   Initialized with
  31                 // mscorlib.dll here.
  32                 static ArrayList references;
  33
  34                 // Lookup paths
  35                 static ArrayList link_paths;
  36
  37                 static bool yacc_verbose = false;
  38
  39                 static int error_count = 0;
  40
  41                 static string first_source;
  42
  43                 static Target target = Target.Exe;
  44                 static string target_ext = ".exe";
  45
  46                 static bool parse_only = false;
  47
  48                 static ArrayList defines;
  49
  50                 static int parse (string input_file)
  51                 {
  52                         CSharpParser parser;
  53                         Stream input;
  54                         int errors;
  55
  56                         try {
  57                                 input = File.OpenRead (input_file);
  58                         } catch {
  59                                 Report.Error (2001, "Source file '" + input_file + "' could not be opened");
  60                                 return 1;
  61                         }
  62
  63                         parser = new CSharpParser (input_file, input, defines);
  64                         parser.yacc_verbose = yacc_verbose;
  65                         try {
  66                                 errors = parser.parse ();\r
  67                         } catch (Exception ex) {
  68                                 Console.WriteLine (ex);
  69                                 Console.WriteLine ("Compilation aborted");
  70                                 return 1;
  71                         }
  72
  73                         return errors;
  74                 }
  75
  76                 static void Usage (bool is_error)
  77                 {
  78                         Console.WriteLine (
  79                                 "Mono C# compiler, (C) 2001 Ximian, Inc.\n" +
  80                                 "mcs [options] source-files\n" +
  81                                 "   --about         About the Mono C# compiler\n" +
  82                                 "   --checked       Set default context to checked\n" +
  83                                 "   --define SYM    Defines the symbol SYM\n" +
  84                                 "   --fatal         Makes errors fatal\n" +
  85                                 "   --stacktrace    Shows stack trace at error location\n" +
  86                                 "   -L PATH         Adds PATH to the assembly link path\n" +
  87                                 "   --nostdlib      Does not load core libraries\n" +
  88                                 "   --nowarn XXX    Ignores warning number XXX\n" +
  89                                 "   -o FNAME        Specifies output file\n" +
  90                                 "   --optimize      Optimizes\n" +
  91                                 "   --parse         Only parses the source file\n" +
  92                                 "   --probe X L     Probes for the source to generate code X on line L\n" +
  93                                 "   --target KIND   Specifies the target (KIND is one of: exe, winexe, " +
  94                                                     "library, module)\n" +
  95                                 "   --unsafe        Allows unsafe code\n" +
  96                                 "   --werror        Treat warnings as errors\n" +
  97                                 "   --wlevel LEVEL  Sets warning level (the highest is 4, the default)\n" +
  98                                 "   -r              References an assembly\n" +
  99                                 "   -v              Verbose parsing (for debugging the parser)\n" +
 100                                 "   @file           Read response file for more options");
 101                         if (is_error)
 102                                 error_count++;
 103                 }
 104
 105                 static void About ()
 106                 {
 107                         Console.WriteLine (
 108                                 "The Mono C# compiler is (C) 2001 Ximian, Inc.\n\n" +
 109                                 "The compiler source code is released under the terms of the GNU GPL\n\n" +
 110
 111                                 "For more information on Mono, visit the project Web site\n" +
 112                                 "   http://www.go-mono.com\n\n" +
 113
 114                                 "The compiler was written by Miguel de Icaza and Ravi Pratap");
 115                 }
 116
 117                 static void error (string msg)
 118                 {
 119                         Console.WriteLine ("Error: " + msg);
 120                 }
 121
 122                 static void notice (string msg)
 123                 {
 124                         Console.WriteLine (msg);
 125                 }
 126
 127                 public static int Main (string[] args)
 128                 {
 129                         MainDriver (args);
 130
 131                         return error_count;
 132                 }
 133
 134                 static public int LoadAssembly (string assembly)
 135                 {
 136                         Assembly a;
 137                         string total_log = "";
 138
 139                         try {
 140                                 a = Assembly.Load (assembly);
 141                                 RootContext.TypeManager.AddAssembly (a);
 142                                 return 0;
 143                         } catch (FileNotFoundException){
 144                                 foreach (string dir in link_paths){
 145                                         string full_path = dir + "/" + assembly + ".dll";
 146
 147                                         try {
 148                                                 a = Assembly.LoadFrom (full_path);
 149                                                 RootContext.TypeManager.AddAssembly (a);
 150                                                 return 0;
 151                                         } catch (FileNotFoundException ff) {
 152                                                 total_log += ff.FusionLog;
 153                                                 continue;
 154                                         }
 155                                 }
 156                         } catch (BadImageFormatException f) {
 157                                 error ("// Bad file format while loading assembly");
 158                                 error ("Log: " + f.FusionLog);
 159                                 return 1;
 160                         } catch (FileLoadException f){
 161                                 error ("// File Load Exception: ");
 162                                 error ("Log: " + f.FusionLog);
 163                                 return 1;
 164                         } catch (ArgumentNullException){
 165                                 error ("// Argument Null exception ");
 166                                 return 1;
 167                         }
 168
 169                         Report.Error (6, "Can not find assembly `" + assembly + "'" );
 170                         Console.WriteLine ("Log: \n" + total_log);
 171
 172                         return 0;
 173                 }
 174
 175                 /// <summary>
 176                 ///   Loads all assemblies referenced on the command line
 177                 /// </summary>
 178                 static public int LoadReferences ()
 179                 {
 180                         int errors = 0;
 181
 182                         foreach (string r in references)
 183                                 errors += LoadAssembly (r);
 184
 185                         return errors;
 186                 }
 187
 188                 static void SetupDefaultDefines ()
 189                 {
 190                         defines = new ArrayList ();
 191                         defines.Add ("__MonoCS__");
 192                 }
 193
 194                 static string [] LoadArgs (string file)
 195                 {
 196                         StreamReader f;
 197                         ArrayList args = new ArrayList ();
 198                         string line;
 199                         try {
 200                                 f = new StreamReader (file);
 201                         } catch {
 202                                 return null;
 203                         }
 204
 205                         while ((line = f.ReadLine ()) != null){
 206                                 string [] line_args = line.Split (new char [] { ' ' });
 207
 208                                 foreach (string arg in line_args)
 209                                         args.Add (arg);
 210                         }
 211
 212                         string [] ret_value = new string [args.Count];
 213                         args.CopyTo (ret_value, 0);
 214
 215                         return ret_value;
 216                 }
 217
 218                 /// <summary>
 219                 ///    Parses the arguments, and drives the compilation
 220                 ///    process.
 221                 /// </summary>
 222                 ///
 223                 /// <remarks>
 224                 ///    TODO: Mostly structured to debug the compiler
 225                 ///    now, needs to be turned into a real driver soon.
 226                 /// </remarks>
 227                 static void MainDriver (string [] args)
 228                 {
 229                         int errors = 0, i;
 230                         string output_file = null;
 231
 232                         references = new ArrayList ();
 233                         link_paths = new ArrayList ();
 234
 235                         SetupDefaultDefines ();
 236
 237                         //
 238                         // Setup defaults
 239                         //
 240                         // This is not required because Assembly.Load knows about this
 241                         // path.
 242                         //
 243                         link_paths.Add ("file:///C:/WINNT/Microsoft.NET/Framework/v1.0.2914");
 244
 245                         int argc = args.Length;
 246                         for (i = 0; i < argc; i++){
 247                                 string arg = args [i];
 248
 249                                 if (arg.StartsWith ("@")){
 250                                         string [] new_args, extra_args;
 251                                         string response_file = arg.Substring (1);
 252
 253                                         extra_args = LoadArgs (response_file);
 254                                         if (extra_args == null){
 255                                                 Report.Error (2011, "Unable to open response file: " +
 256                                                               response_file);
 257                                                 return;
 258                                         }
 259
 260                                         new_args = new string [extra_args.Length + argc];
 261                                         args.CopyTo (new_args, 0);
 262                                         extra_args.CopyTo (new_args, argc);
 263                                         args = new_args;
 264                                         argc = new_args.Length;
 265                                         continue;
 266                                 }
 267
 268                                 if (arg.StartsWith ("-")){
 269                                         switch (arg){
 270                                         case "-v":
 271                                                 yacc_verbose = true;
 272                                                 continue;
 273
 274                                         case "--parse":
 275                                                 parse_only = true;
 276                                                 continue;
 277
 278                                         case "--main": case "-m":
 279                                                 if ((i + 1) >= argc){
 280                                                         Usage (true);
 281                                                         return;
 282                                                 }
 283                                                 RootContext.MainClass = args [++i];
 284                                                 continue;
 285
 286                                         case "--unsafe":
 287                                                 RootContext.Unsafe = true;
 288                                                 break;
 289
 290                                         case "--optimize":
 291                                                 RootContext.Optimize = true;
 292                                                 continue;
 293
 294                                         case "--help":
 295                                                 Usage (false);
 296                                                 return;
 297
 298                                         case "--define":
 299                                                 if ((i + 1) >= argc){
 300                                                         Usage (true);
 301                                                         return;
 302                                                 }
 303                                                 defines.Add (args [++i]);
 304                                                 continue;
 305
 306                                         case "--probe": {
 307                                                 int code, line;
 308
 309                                                 code = Int32.Parse (args [++i], 0);
 310                                                 line = Int32.Parse (args [++i], 0);
 311                                                 Report.SetProbe (code, line);
 312                                                 continue;
 313                                         }
 314
 315                                         case "-o": case "--output":
 316                                                 if ((i + 1) >= argc){
 317                                                         Usage (true);
 318                                                         return;
 319                                                 }
 320                                                 output_file = args [++i];
 321                                                 continue;
 322
 323                                         case "--checked":
 324                                                 RootContext.Checked = true;
 325                                                 continue;
 326
 327                                         case "--stacktrace":
 328                                                 Report.Stacktrace = true;
 329                                                 continue;
 330
 331                                         case "--target":
 332                                                 if ((i + 1) >= argc){
 333                                                         Usage (true);
 334                                                         return;
 335                                                 }
 336
 337                                                 string type = args [++i];
 338                                                 switch (type){
 339                                                 case "library":
 340                                                         target = Target.Library;
 341                                                         target_ext = ".dll";
 342                                                         break;
 343
 344                                                 case "exe":
 345                                                         target = Target.Exe;
 346                                                         break;
 347
 348                                                 case "winexe":
 349                                                         target = Target.WinExe;
 350                                                         break;
 351
 352                                                 case "module":
 353                                                         target = Target.Module;
 354                                                         target_ext = ".dll";
 355                                                         break;
 356                                                 }
 357                                                 continue;
 358
 359                                         case "-r":
 360                                                 if ((i + 1) >= argc){
 361                                                         Usage (true);
 362                                                         return;
 363                                                 }
 364
 365                                                 references.Add (args [++i]);
 366                                                 continue;
 367
 368                                         case "-L":
 369                                                 if ((i + 1) >= argc){
 370                                                         Usage (true);
 371                                                         return;
 372                                                 }
 373                                                 link_paths.Add (args [++i]);
 374                                                 continue;
 375
 376                                         case "--nostdlib":
 377                                                 RootContext.StdLib = false;
 378                                                 continue;
 379
 380                                         case "--fatal":
 381                                                 Report.Fatal = true;
 382                                                 continue;
 383
 384                                         case "--werror":
 385                                                 Report.WarningsAreErrors = true;
 386                                                 continue;
 387
 388                                         case "--nowarn":
 389                                                 if ((i + 1) >= argc){
 390                                                         Usage (true);
 391                                                         return;
 392                                                 }
 393                                                 int warn;
 394
 395                                                 try {
 396                                                         warn = Int32.Parse (args [++i]);
 397                                                 } catch {
 398                                                         Usage (true);
 399                                                         return;
 400                                                 }
 401                                                 Report.SetIgnoreWarning (warn);
 402                                                 continue;
 403
 404                                         case "--wlevel":
 405                                                 if ((i + 1) >= argc){
 406                                                         Usage (true);
 407                                                         error_count++;
 408                                                         return;
 409                                                 }
 410                                                 int level;
 411
 412                                                 try {
 413                                                         level = Int32.Parse (args [++i]);
 414                                                 } catch {
 415                                                         Usage (true);
 416                                                         return;
 417                                                 }
 418                                                 if (level < 0 || level > 4){
 419                                                         Report.Error (1900, "Warning level must be 0 to 4");
 420                                                         return;
 421                                                 } else
 422                                                         RootContext.WarningLevel = level;
 423                                                 continue;
 424
 425                                         case "--about":
 426                                                 About ();
 427                                                 return;
 428
 429                                         default:
 430                                                 Usage (true);
 431                                                 return;
 432                                         }
 433                                 }
 434
 435                                 if (first_source == null)
 436                                         first_source = arg;
 437
 438                                 string [] files = Directory.GetFiles (".", arg);
 439                                 foreach (string f in files){
 440                                         if (!f.ToLower ().EndsWith (".cs")){
 441                                                 error ("Do not know how to compile " + arg);
 442                                                 errors++;
 443                                                 continue;
 444                                         }
 445                                         errors += parse (f);
 446                                 }
 447                         }
 448
 449                         if (first_source == null){
 450                                 Report.Error (2008, "No files to compile were specified");
 451                                 return;
 452                         }
 453
 454                         if (Report.Errors > 0)
 455                                 return;
 456
 457                         if (parse_only)
 458                                 return;
 459
 460                         //
 461                         // Load Core Library for default compilation
 462                         //
 463                         if (RootContext.StdLib){
 464                                 references.Insert (0, "mscorlib");
 465                                 references.Insert (1, "System");
 466                         }
 467
 468                         if (errors > 0){
 469                                 error ("Parsing failed");
 470                                 return;
 471                         }
 472
 473                         //
 474                         // Load assemblies required
 475                         //
 476                         errors += LoadReferences ();
 477
 478                         if (errors > 0){
 479                                 error ("Could not load one or more assemblies");
 480                                 return;
 481                         }
 482
 483                         error_count = errors;
 484
 485                         //
 486                         // Quick hack
 487                         //
 488                         if (output_file == null){
 489                                 int pos = first_source.LastIndexOf (".");
 490
 491                                 output_file = first_source.Substring (0, pos) + target_ext;
 492                         }
 493
 494                         RootContext.CodeGen = new CodeGen (output_file, output_file);
 495
 496                         //
 497                         // Before emitting, we need to get the core
 498                         // types emitted from the user defined types
 499                         // or from the system ones.
 500                         //
 501                         RootContext.TypeManager.InitCoreTypes ();
 502
 503                         RootContext.TypeManager.AddModule (RootContext.CodeGen.ModuleBuilder);
 504
 505                         //
 506                         // The second pass of the compiler
 507                         //
 508                         RootContext.ResolveTree ();
 509                         RootContext.PopulateTypes ();
 510
 511                         if (Report.Errors > 0){
 512                                 error ("Compilation failed");
 513                                 return;
 514                         }
 515
 516                         //
 517                         // The code generator
 518                         //
 519                         RootContext.EmitCode ();
 520
 521                         if (Report.Errors > 0){
 522                                 error ("Compilation failed");
 523                                 return;
 524                         }
 525
 526                         RootContext.CloseTypes ();
 527
 528                         PEFileKinds k = PEFileKinds.ConsoleApplication;
 529
 530                         if (target == Target.Library || target == Target.Module)
 531                                 k = PEFileKinds.Dll;
 532                         else if (target == Target.Exe)
 533                                 k = PEFileKinds.ConsoleApplication;
 534                         else if (target == Target.WinExe)
 535                                 k = PEFileKinds.WindowApplication;
 536
 537                         if (target == Target.Exe || target == Target.WinExe){
 538                                 MethodInfo ep = RootContext.EntryPoint;
 539
 540                                 if (ep == null){
 541                                         Report.Error (5001, "Program " + output_file +
 542                                                               " does not have an entry point defined");
 543                                         return;
 544                                 }
 545
 546                                 RootContext.CodeGen.AssemblyBuilder.SetEntryPoint (ep, k);
 547                         }
 548
 549                         RootContext.CodeGen.Save (output_file);
 550
 551                         if (Report.Errors > 0){
 552                                 error ("Compilation failed");
 553                                 return;
 554                         } else if (Report.ProbeCode != 0){
 555                                 error ("Failed to report code " + Report.ProbeCode);
 556                                 Environment.Exit (124);
 557                         }
 558                 }
 559
 560         }
 561 }