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