mcs/class/System/Microsoft.CSharp/CSharpCodeGenerator.cs

   1 //
   2 // Mono.CSharp CSharpCodeProvider Class implementation
   3 //
   4 // Author:
   5 //   Daniel Stodden (stodden@in.tum.de)
   6 //   Marek Safar (marek.safar@seznam.cz)
   7 //   Ilker Cetinkaya (mail@ilker.de)
   8 //
   9 // (C) 2002 Ximian, Inc.
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 namespace Mono.CSharp
  34 {
  35         using System;
  36         using System.CodeDom;
  37         using System.CodeDom.Compiler;
  38         using System.Globalization;
  39         using System.IO;
  40         using System.Reflection;
  41         using System.Collections;
  42         using System.Text;
  43         using System.Collections.Generic;
  44
  45         internal class CSharpCodeGenerator
  46                 : CodeGenerator
  47         {
  48                 IDictionary <string, string> providerOptions;
  49
  50                 // It is used for beautiful "for" syntax
  51                 bool dont_write_semicolon;
  52
  53                 //
  54                 // Constructors
  55                 //
  56                 public CSharpCodeGenerator()
  57                 {
  58                         dont_write_semicolon = false;
  59                 }
  60
  61                 public CSharpCodeGenerator (IDictionary <string, string> providerOptions)
  62                 {
  63                         this.providerOptions = providerOptions;
  64                 }
  65
  66                 protected IDictionary <string, string> ProviderOptions {
  67                         get { return providerOptions; }
  68                 }
  69
  70                 //
  71                 // Properties
  72                 //
  73                 protected override string NullToken {
  74                         get {
  75                                 return "null";
  76                         }
  77                 }
  78
  79                 //
  80                 // Methods
  81                 //
  82
  83                 protected override void GenerateArrayCreateExpression (CodeArrayCreateExpression expression)
  84                 {
  85                         //
  86                         // This tries to replicate MS behavior as good as
  87                         // possible.
  88                         //
  89                         // The Code-Array stuff in ms.net seems to be broken
  90                         // anyways, or I'm too stupid to understand it.
  91                         //
  92                         // I'm sick of it. If you try to develop array
  93                         // creations, test them on windows. If it works there
  94                         // but not in mono, drop me a note.  I'd be especially
  95                         // interested in jagged-multidimensional combinations
  96                         // with proper initialization :}
  97                         //
  98
  99                         TextWriter output = Output;
 100
 101                         output.Write ("new ");
 102
 103                         CodeExpressionCollection initializers = expression.Initializers;
 104                         CodeTypeReference createType = expression.CreateType;
 105
 106                         if (initializers.Count > 0) {
 107
 108                                 OutputType (createType);
 109
 110                                 if (expression.CreateType.ArrayRank == 0) {
 111                                         output.Write ("[]");
 112                                 }
 113
 114                                 OutputStartBrace ();
 115                                 ++Indent;
 116                                 OutputExpressionList (initializers, true);
 117                                 --Indent;
 118                                 output.Write ("}");
 119                         } else {
 120                                 CodeTypeReference arrayType = createType.ArrayElementType;
 121                                 while (arrayType != null) {
 122                                         createType = arrayType;
 123                                         arrayType = arrayType.ArrayElementType;
 124                                 }
 125
 126                                 OutputType (createType);
 127
 128                                 output.Write ('[');
 129
 130                                 CodeExpression size = expression.SizeExpression;
 131                                 if (size != null)
 132                                         GenerateExpression (size);
 133                                 else
 134                                         output.Write (expression.Size);
 135
 136                                 output.Write(']');
 137                         }
 138                 }
 139
 140                 protected override void GenerateBaseReferenceExpression (CodeBaseReferenceExpression expression)
 141                 {
 142                         Output.Write ("base");
 143                 }
 144
 145                 protected override void GenerateCastExpression (CodeCastExpression expression)
 146                 {
 147                         TextWriter output = Output;
 148                         output.Write ("((");
 149                         OutputType (expression.TargetType);
 150                         output.Write (")(");
 151                         GenerateExpression (expression.Expression);
 152                         output.Write ("))");
 153                 }
 154
 155
 156                 protected override void GenerateCompileUnitStart (CodeCompileUnit compileUnit)
 157                 {
 158                         GenerateComment (new CodeComment ("------------------------------------------------------------------------------"));
 159                         GenerateComment (new CodeComment (" <autogenerated>"));
 160                         GenerateComment (new CodeComment ("     This code was generated by a tool."));
 161                         GenerateComment (new CodeComment ("     Mono Runtime Version: " +  System.Environment.Version));
 162                         GenerateComment (new CodeComment (""));
 163                         GenerateComment (new CodeComment ("     Changes to this file may cause incorrect behavior and will be lost if "));
 164                         GenerateComment (new CodeComment ("     the code is regenerated."));
 165                         GenerateComment (new CodeComment (" </autogenerated>"));
 166                         GenerateComment (new CodeComment ("------------------------------------------------------------------------------"));
 167                         Output.WriteLine ();
 168                         base.GenerateCompileUnitStart (compileUnit);
 169                 }
 170
 171                 protected override void GenerateCompileUnit (CodeCompileUnit compileUnit)
 172                 {
 173                         GenerateCompileUnitStart (compileUnit);
 174
 175                         List<CodeNamespaceImport> imports = null;
 176                         foreach (CodeNamespace codeNamespace in compileUnit.Namespaces) {
 177                                 if (!string.IsNullOrEmpty (codeNamespace.Name))
 178                                         continue;
 179
 180                                 if (codeNamespace.Imports.Count == 0)
 181                                         continue;
 182
 183                                 if (imports == null)
 184                                         imports = new List<CodeNamespaceImport> ();
 185
 186                                 foreach (CodeNamespaceImport i in codeNamespace.Imports)
 187                                         imports.Add (i);
 188                         }
 189
 190                         if (imports != null) {
 191                                 imports.Sort ((a, b) => a.Namespace.CompareTo (b.Namespace));
 192                                 foreach (var import in imports)
 193                                         GenerateNamespaceImport (import);
 194
 195                                 Output.WriteLine ();
 196                         }
 197
 198                         if (compileUnit.AssemblyCustomAttributes.Count > 0) {
 199                                 OutputAttributes (compileUnit.AssemblyCustomAttributes,
 200                                         "assembly: ", false);
 201                                 Output.WriteLine ("");
 202                         }
 203
 204                         CodeNamespaceImportCollection global_imports = null;
 205                         foreach (CodeNamespace codeNamespace in compileUnit.Namespaces) {
 206                                 if (string.IsNullOrEmpty (codeNamespace.Name)) {
 207                                         global_imports = codeNamespace.Imports;
 208                                         codeNamespace.Imports.Clear ();
 209                                 }
 210
 211                                 GenerateNamespace (codeNamespace);
 212
 213                                 if (global_imports != null) {
 214                                         codeNamespace.Imports.Clear ();
 215                                         foreach (CodeNamespaceImport ns in global_imports)
 216                                         codeNamespace.Imports.Add (ns);
 217                                         global_imports = null;
 218                                 }
 219                         }
 220
 221                         GenerateCompileUnitEnd (compileUnit);
 222                 }
 223
 224                 protected override void GenerateDefaultValueExpression (CodeDefaultValueExpression e)
 225                 {
 226                         Output.Write ("default(");
 227                         OutputType (e.Type);
 228                         Output.Write (')');
 229                 }
 230
 231                 protected override void GenerateDelegateCreateExpression (CodeDelegateCreateExpression expression)
 232                 {
 233                         TextWriter output = Output;
 234
 235                         output.Write ("new ");
 236                         OutputType (expression.DelegateType);
 237                         output.Write ('(');
 238
 239                         CodeExpression targetObject = expression.TargetObject;
 240                         if (targetObject != null) {
 241                                 GenerateExpression (targetObject);
 242                                 Output.Write ('.');
 243                         }
 244                         output.Write (GetSafeName (expression.MethodName));
 245
 246                         output.Write (')');
 247                 }
 248
 249                 protected override void GenerateFieldReferenceExpression (CodeFieldReferenceExpression expression)
 250                 {
 251                         CodeExpression targetObject = expression.TargetObject;
 252                         if (targetObject != null) {
 253                                 GenerateExpression (targetObject);
 254                                 Output.Write ('.');
 255                         }
 256                         Output.Write (GetSafeName (expression.FieldName));
 257                 }
 258
 259                 protected override void GenerateArgumentReferenceExpression (CodeArgumentReferenceExpression expression)
 260                 {
 261                         Output.Write (GetSafeName (expression.ParameterName));
 262                 }
 263
 264                 protected override void GenerateVariableReferenceExpression (CodeVariableReferenceExpression expression)
 265                 {
 266                         Output.Write (GetSafeName (expression.VariableName));
 267                 }
 268
 269                 protected override void GenerateIndexerExpression (CodeIndexerExpression expression)
 270                 {
 271                         TextWriter output = Output;
 272
 273                         GenerateExpression (expression.TargetObject);
 274                         output.Write ('[');
 275                         OutputExpressionList (expression.Indices);
 276                         output.Write (']');
 277                 }
 278
 279                 protected override void GenerateArrayIndexerExpression (CodeArrayIndexerExpression expression)
 280                 {
 281                         TextWriter output = Output;
 282
 283                         GenerateExpression (expression.TargetObject);
 284                         output.Write ('[');
 285                         OutputExpressionList (expression.Indices);
 286                         output.Write (']');
 287                 }
 288
 289                 protected override void GenerateSnippetExpression (CodeSnippetExpression expression)
 290                 {
 291                         Output.Write (expression.Value);
 292                 }
 293
 294                 protected override void GenerateMethodInvokeExpression (CodeMethodInvokeExpression expression)
 295                 {
 296                         TextWriter output = Output;
 297
 298                         GenerateMethodReferenceExpression (expression.Method);
 299
 300                         output.Write ('(');
 301                         OutputExpressionList (expression.Parameters);
 302                         output.Write (')');
 303                 }
 304
 305                 protected override void GenerateMethodReferenceExpression (CodeMethodReferenceExpression expression)
 306                 {
 307                         if (expression.TargetObject != null)
 308                         {
 309                                 GenerateExpression (expression.TargetObject);
 310                                 Output.Write ('.');
 311                         };
 312                         Output.Write (GetSafeName (expression.MethodName));
 313                         if (expression.TypeArguments.Count > 0)
 314                                 Output.Write (GetTypeArguments (expression.TypeArguments));
 315                 }
 316
 317                 protected override void GenerateEventReferenceExpression (CodeEventReferenceExpression expression)
 318                 {
 319                         if (expression.TargetObject != null) {
 320                                 GenerateExpression (expression.TargetObject);
 321                                 Output.Write ('.');
 322                         }
 323                         Output.Write (GetSafeName (expression.EventName));
 324                 }
 325
 326                 protected override void GenerateDelegateInvokeExpression (CodeDelegateInvokeExpression expression)
 327                 {
 328                         if (expression.TargetObject != null)
 329                                 GenerateExpression (expression.TargetObject);
 330                         Output.Write ('(');
 331                         OutputExpressionList (expression.Parameters);
 332                         Output.Write (')');
 333                 }
 334
 335                 protected override void GenerateObjectCreateExpression (CodeObjectCreateExpression expression)
 336                 {
 337                         Output.Write ("new ");
 338                         OutputType (expression.CreateType);
 339                         Output.Write ('(');
 340                         OutputExpressionList (expression.Parameters);
 341                         Output.Write (')');
 342                 }
 343
 344                 protected override void GeneratePropertyReferenceExpression (CodePropertyReferenceExpression expression)
 345                 {
 346                         CodeExpression targetObject = expression.TargetObject;
 347                         if (targetObject != null) {
 348                                 GenerateExpression (targetObject);
 349                                 Output.Write ('.');
 350                         }
 351                         Output.Write (GetSafeName (expression.PropertyName ));
 352                 }
 353
 354                 protected override void GeneratePropertySetValueReferenceExpression (CodePropertySetValueReferenceExpression expression)
 355                 {
 356                         Output.Write ("value");
 357                 }
 358
 359                 protected override void GenerateThisReferenceExpression (CodeThisReferenceExpression expression)
 360                 {
 361                         Output.Write ("this");
 362                 }
 363
 364                 protected override void GenerateExpressionStatement (CodeExpressionStatement statement)
 365                 {
 366                         GenerateExpression (statement.Expression);
 367                         if (dont_write_semicolon)
 368                                 return;
 369                         Output.WriteLine(';');
 370                 }
 371
 372                 protected override void GenerateIterationStatement (CodeIterationStatement statement)
 373                 {
 374                         TextWriter output = Output;
 375
 376                         dont_write_semicolon = true;
 377                         output.Write ("for (");
 378                         GenerateStatement (statement.InitStatement);
 379                         output.Write ("; ");
 380                         GenerateExpression (statement.TestExpression);
 381                         output.Write ("; ");
 382                         GenerateStatement (statement.IncrementStatement);
 383                         output.Write (")");
 384                         dont_write_semicolon = false;
 385                         OutputStartBrace ();
 386                         ++Indent;
 387                         GenerateStatements (statement.Statements);
 388                         --Indent;
 389                         output.WriteLine ('}');
 390                 }
 391
 392                 protected override void GenerateThrowExceptionStatement (CodeThrowExceptionStatement statement)
 393                 {
 394                         Output.Write ("throw");
 395                         if (statement.ToThrow != null) {
 396                                 Output.Write (' ');
 397                                 GenerateExpression (statement.ToThrow);
 398                         }
 399                         Output.WriteLine (";");
 400                 }
 401
 402                 protected override void GenerateComment (CodeComment comment)
 403                 {
 404                         TextWriter output = Output;
 405
 406                         string commentChars = null;
 407
 408                         if (comment.DocComment) {
 409                                 commentChars = "///";
 410                         } else {
 411                                 commentChars = "//";
 412                         }
 413
 414                         output.Write (commentChars);
 415                         output.Write (' ');
 416                         string text = comment.Text;
 417
 418                         for (int i = 0; i < text.Length; i++) {
 419                                 output.Write (text[i]);
 420                                 if (text[i] == '\r') {
 421                                         if (i < (text.Length - 1) && text[i + 1] == '\n') {
 422                                                 continue;
 423                                         }
 424                                         output.Write (commentChars);
 425                                 } else if (text[i] == '\n') {
 426                                         output.Write (commentChars);
 427                                 }
 428                         }
 429
 430                         output.WriteLine ();
 431                 }
 432
 433                 protected override void GenerateMethodReturnStatement (CodeMethodReturnStatement statement)
 434                 {
 435                         TextWriter output = Output;
 436
 437                         if (statement.Expression != null) {
 438                                 output.Write ("return ");
 439                                 GenerateExpression (statement.Expression);
 440                                 output.WriteLine (";");
 441                         } else {
 442                                 output.WriteLine ("return;");
 443                         }
 444                 }
 445
 446                 protected override void GenerateConditionStatement (CodeConditionStatement statement)
 447                 {
 448                         TextWriter output = Output;
 449                         output.Write ("if (");
 450                         GenerateExpression (statement.Condition);
 451                         output.Write (")");
 452                         OutputStartBrace ();
 453
 454                         ++Indent;
 455                         GenerateStatements (statement.TrueStatements);
 456                         --Indent;
 457
 458                         CodeStatementCollection falses = statement.FalseStatements;
 459                         if (falses.Count > 0) {
 460                                 output.Write ('}');
 461                                 if (Options.ElseOnClosing)
 462                                         output.Write (' ');
 463                                 else
 464                                         output.WriteLine ();
 465                                 output.Write ("else");
 466                                 OutputStartBrace ();
 467                                 ++Indent;
 468                                 GenerateStatements (falses);
 469                                 --Indent;
 470                         }
 471                         output.WriteLine ('}');
 472                 }
 473
 474                 protected override void GenerateTryCatchFinallyStatement (CodeTryCatchFinallyStatement statement)
 475                 {
 476                         TextWriter output = Output;
 477                         CodeGeneratorOptions options = Options;
 478
 479                         output.Write ("try");
 480                         OutputStartBrace ();
 481                         ++Indent;
 482                         GenerateStatements (statement.TryStatements);
 483                         --Indent;
 484
 485                         foreach (CodeCatchClause clause in statement.CatchClauses) {
 486                                 output.Write ('}');
 487                                 if (options.ElseOnClosing)
 488                                         output.Write (' ');
 489                                 else
 490                                         output.WriteLine ();
 491                                 output.Write ("catch (");
 492                                 OutputTypeNamePair (clause.CatchExceptionType, GetSafeName(clause.LocalName));
 493                                 output.Write (")");
 494                                 OutputStartBrace ();
 495                                 ++Indent;
 496                                 GenerateStatements (clause.Statements);
 497                                 --Indent;
 498                         }
 499
 500                         CodeStatementCollection finallies = statement.FinallyStatements;
 501                         if (finallies.Count > 0) {
 502                                 output.Write ('}');
 503                                 if (options.ElseOnClosing)
 504                                         output.Write (' ');
 505                                 else
 506                                         output.WriteLine ();
 507                                 output.Write ("finally");
 508                                 OutputStartBrace ();
 509                                 ++Indent;
 510                                 GenerateStatements (finallies);
 511                                 --Indent;
 512                         }
 513
 514                         output.WriteLine('}');
 515                 }
 516
 517                 protected override void GenerateAssignStatement (CodeAssignStatement statement)
 518                 {
 519                         TextWriter output = Output;
 520                         GenerateExpression (statement.Left);
 521                         output.Write (" = ");
 522                         GenerateExpression (statement.Right);
 523                         if (dont_write_semicolon)
 524                                 return;
 525                         output.WriteLine (';');
 526                 }
 527
 528                 protected override void GenerateAttachEventStatement (CodeAttachEventStatement statement)
 529                 {
 530                         TextWriter output = Output;
 531
 532                         GenerateEventReferenceExpression (statement.Event);
 533                         output.Write (" += ");
 534                         GenerateExpression (statement.Listener);
 535                         output.WriteLine (';');
 536                 }
 537
 538                 protected override void GenerateRemoveEventStatement (CodeRemoveEventStatement statement)
 539                 {
 540                         TextWriter output = Output;
 541                         GenerateEventReferenceExpression (statement.Event);
 542                         output.Write (" -= ");
 543                         GenerateExpression (statement.Listener);
 544                         output.WriteLine (';');
 545                 }
 546
 547                 protected override void GenerateGotoStatement (CodeGotoStatement statement)
 548                 {
 549                         TextWriter output = Output;
 550
 551                         output.Write ("goto ");
 552                         output.Write (GetSafeName (statement.Label));
 553                         output.WriteLine (";");
 554                 }
 555
 556                 protected override void GenerateLabeledStatement (CodeLabeledStatement statement)
 557                 {
 558                         Indent--;
 559                         Output.Write (statement.Label);
 560                         Output.WriteLine (":");
 561                         Indent++;
 562
 563                         if (statement.Statement != null) {
 564                                 GenerateStatement (statement.Statement);
 565                         }
 566                 }
 567
 568                 protected override void GenerateVariableDeclarationStatement (CodeVariableDeclarationStatement statement)
 569                 {
 570                         TextWriter output = Output;
 571
 572                         OutputTypeNamePair (statement.Type, GetSafeName (statement.Name));
 573
 574                         CodeExpression initExpression = statement.InitExpression;
 575                         if (initExpression != null) {
 576                                 output.Write (" = ");
 577                                 GenerateExpression (initExpression);
 578                         }
 579
 580                         if (!dont_write_semicolon) {
 581                                 output.WriteLine (';');
 582                         }
 583                 }
 584
 585                 protected override void GenerateLinePragmaStart (CodeLinePragma linePragma)
 586                 {
 587                         Output.WriteLine ();
 588                         Output.Write ("#line ");
 589                         Output.Write (linePragma.LineNumber);
 590                         Output.Write (" \"");
 591                         Output.Write (linePragma.FileName);
 592                         Output.Write ("\"");
 593                         Output.WriteLine ();
 594                 }
 595
 596                 protected override void GenerateLinePragmaEnd (CodeLinePragma linePragma)
 597                 {
 598                         Output.WriteLine ();
 599                         Output.WriteLine ("#line default");
 600                         Output.WriteLine ("#line hidden");
 601                 }
 602
 603                 protected override void GenerateEvent (CodeMemberEvent eventRef, CodeTypeDeclaration declaration)
 604                 {
 605                         if (IsCurrentDelegate || IsCurrentEnum) {
 606                                 return;
 607                         }
 608
 609                         OutputAttributes (eventRef.CustomAttributes, null, false);
 610
 611                         if (eventRef.PrivateImplementationType == null) {
 612                                 OutputMemberAccessModifier (eventRef.Attributes);
 613                         }
 614
 615                         Output.Write ("event ");
 616
 617                         if (eventRef.PrivateImplementationType != null) {
 618                                 OutputTypeNamePair (eventRef.Type,
 619                                         eventRef.PrivateImplementationType.BaseType + "." +
 620                                         eventRef.Name);
 621                         } else {
 622                                 OutputTypeNamePair (eventRef.Type, GetSafeName (eventRef.Name));
 623                         }
 624                         Output.WriteLine (';');
 625                 }
 626
 627                 protected override void GenerateField (CodeMemberField field)
 628                 {
 629                         if (IsCurrentDelegate || IsCurrentInterface) {
 630                                 return;
 631                         }
 632
 633                         TextWriter output = Output;
 634
 635                         OutputAttributes (field.CustomAttributes, null, false);
 636
 637                         if (IsCurrentEnum) {
 638                                 Output.Write (GetSafeName (field.Name));
 639                         } else {
 640                                 MemberAttributes attributes = field.Attributes;
 641                                 OutputMemberAccessModifier (attributes);
 642                                 OutputVTableModifier (attributes);
 643                                 OutputFieldScopeModifier (attributes);
 644
 645                                 OutputTypeNamePair (field.Type, GetSafeName (field.Name));
 646                         }
 647
 648                         CodeExpression initExpression = field.InitExpression;
 649                         if (initExpression != null) {
 650                                 output.Write (" = ");
 651                                 GenerateExpression (initExpression);
 652                         }
 653
 654                         if (IsCurrentEnum)
 655                                 output.WriteLine (',');
 656                         else
 657                                 output.WriteLine (';');
 658                 }
 659
 660                 protected override void GenerateSnippetMember (CodeSnippetTypeMember member)
 661                 {
 662                         Output.Write (member.Text);
 663                 }
 664
 665                 protected override void GenerateEntryPointMethod (CodeEntryPointMethod method,
 666                                                                   CodeTypeDeclaration declaration)
 667                 {
 668                         OutputAttributes (method.CustomAttributes, null, false);
 669
 670                         Output.Write ("public static ");
 671                         OutputType (method.ReturnType);
 672                         Output.Write (" Main()");
 673                         OutputStartBrace ();
 674                         Indent++;
 675                         GenerateStatements (method.Statements);
 676                         Indent--;
 677                         Output.WriteLine ("}");
 678                 }
 679
 680                 protected override void GenerateMethod (CodeMemberMethod method,
 681                                                         CodeTypeDeclaration declaration)
 682                 {
 683                         if (IsCurrentDelegate || IsCurrentEnum) {
 684                                 return;
 685                         }
 686
 687                         TextWriter output = Output;
 688
 689                         OutputAttributes (method.CustomAttributes, null, false);
 690
 691                         OutputAttributes (method.ReturnTypeCustomAttributes,
 692                                 "return: ", false);
 693
 694                         MemberAttributes attributes = method.Attributes;
 695
 696                         if (!IsCurrentInterface) {
 697                                 if (method.PrivateImplementationType == null) {
 698                                         OutputMemberAccessModifier (attributes);
 699                                         OutputVTableModifier (attributes);
 700                                         OutputMemberScopeModifier (attributes);
 701                                 }
 702                         } else {
 703                                 OutputVTableModifier (attributes);
 704                         }
 705
 706                         OutputType (method.ReturnType);
 707                         output.Write (' ');
 708
 709                         CodeTypeReference privateType = method.PrivateImplementationType;
 710                         if (privateType != null) {
 711                                 output.Write (privateType.BaseType);
 712                                 output.Write ('.');
 713                         }
 714                         output.Write (GetSafeName (method.Name));
 715
 716                         GenerateGenericsParameters (method.TypeParameters);
 717
 718                         output.Write ('(');
 719                         OutputParameters (method.Parameters);
 720                         output.Write (')');
 721
 722                         GenerateGenericsConstraints (method.TypeParameters);
 723
 724                         if (IsAbstract (attributes) || declaration.IsInterface)
 725                                 output.WriteLine (';');
 726                         else {
 727                                 OutputStartBrace ();
 728                                 ++Indent;
 729                                 GenerateStatements (method.Statements);
 730                                 --Indent;
 731                                 output.WriteLine ('}');
 732                         }
 733                 }
 734
 735                 static bool IsAbstract (MemberAttributes attributes)
 736                 {
 737                         return (attributes & MemberAttributes.ScopeMask) == MemberAttributes.Abstract;
 738                 }
 739
 740                 protected override void GenerateProperty (CodeMemberProperty property,
 741                                                           CodeTypeDeclaration declaration)
 742                 {
 743                         if (IsCurrentDelegate || IsCurrentEnum) {
 744                                 return;
 745                         }
 746
 747                         TextWriter output = Output;
 748
 749                         OutputAttributes (property.CustomAttributes, null, false);
 750
 751                         MemberAttributes attributes = property.Attributes;
 752
 753                         if (!IsCurrentInterface) {
 754                                 if (property.PrivateImplementationType == null) {
 755                                         OutputMemberAccessModifier (attributes);
 756                                         OutputVTableModifier (attributes);
 757                                         OutputMemberScopeModifier (attributes);
 758                                 }
 759                         } else {
 760                                 OutputVTableModifier (attributes);
 761                         }
 762
 763                         OutputType (property.Type);
 764                         output.Write (' ');
 765
 766                         if (!IsCurrentInterface && property.PrivateImplementationType != null) {
 767                                 output.Write (property.PrivateImplementationType.BaseType);
 768                                 output.Write ('.');
 769                         }
 770
 771                         // only consider property indexer if name is Item (case-insensitive
 772                         // comparison) AND property has parameters
 773                         if (string.Compare(property.Name, "Item", true, CultureInfo.InvariantCulture) == 0 && property.Parameters.Count > 0) {
 774                                 output.Write ("this[");
 775                                 OutputParameters(property.Parameters);
 776                                 output.Write(']');
 777                         } else {
 778                                 output.Write (GetSafeName (property.Name));
 779                         }
 780                         OutputStartBrace ();
 781                         ++Indent;
 782
 783                         if (declaration.IsInterface || IsAbstract (property.Attributes))
 784                         {
 785                                 if (property.HasGet) output.WriteLine("get;");
 786                                 if (property.HasSet) output.WriteLine("set;");
 787                         }
 788                         else
 789                         {
 790                                 if (property.HasGet)
 791                                 {
 792                                         output.Write ("get");
 793                                         OutputStartBrace ();
 794                                         ++Indent;
 795
 796                                         GenerateStatements (property.GetStatements);
 797
 798                                         --Indent;
 799                                         output.WriteLine ('}');
 800                                 }
 801
 802                                 if (property.HasSet)
 803                                 {
 804                                         output.Write ("set");
 805                                         OutputStartBrace ();
 806                                         ++Indent;
 807
 808                                         GenerateStatements (property.SetStatements);
 809
 810                                         --Indent;
 811                                         output.WriteLine ('}');
 812                                 }
 813                         }
 814
 815                         --Indent;
 816                         output.WriteLine ('}');
 817                 }
 818
 819                 protected override void GenerateConstructor (CodeConstructor constructor, CodeTypeDeclaration declaration)
 820                 {
 821                         if (IsCurrentDelegate || IsCurrentEnum || IsCurrentInterface) {
 822                                 return;
 823                         }
 824
 825                         OutputAttributes (constructor.CustomAttributes, null, false);
 826
 827                         OutputMemberAccessModifier (constructor.Attributes);
 828                         Output.Write (GetSafeName (CurrentTypeName) + "(");
 829                         OutputParameters (constructor.Parameters);
 830                         Output.Write (")");
 831                         if (constructor.BaseConstructorArgs.Count > 0) {
 832                                 Output.WriteLine (" : ");
 833                                 Indent += 2;
 834                                 Output.Write ("base(");
 835                                 OutputExpressionList (constructor.BaseConstructorArgs);
 836                                 Output.Write (')');
 837                                 Indent -= 2;
 838                         }
 839                         if (constructor.ChainedConstructorArgs.Count > 0) {
 840                                 Output.WriteLine (" : ");
 841                                 Indent += 2;
 842                                 Output.Write("this(");
 843                                 OutputExpressionList (constructor.ChainedConstructorArgs);
 844                                 Output.Write(')');
 845                                 Indent -= 2;
 846                         }
 847                         OutputStartBrace ();
 848                         Indent++;
 849                         GenerateStatements (constructor.Statements);
 850                         Indent--;
 851                         Output.WriteLine ('}');
 852                 }
 853
 854                 protected override void GenerateTypeConstructor (CodeTypeConstructor constructor)
 855                 {
 856                         if (IsCurrentDelegate || IsCurrentEnum || IsCurrentInterface) {
 857                                 return;
 858                         }
 859
 860                         OutputAttributes (constructor.CustomAttributes, null, false);
 861
 862                         Output.Write ("static " + GetSafeName (CurrentTypeName) + "()");
 863                         OutputStartBrace ();
 864                         Indent++;
 865                         GenerateStatements (constructor.Statements);
 866                         Indent--;
 867                         Output.WriteLine ('}');
 868                 }
 869
 870                 protected override void GenerateTypeStart(CodeTypeDeclaration declaration)
 871                 {
 872                         TextWriter output = Output;
 873
 874                         OutputAttributes (declaration.CustomAttributes, null, false);
 875
 876                         if (!IsCurrentDelegate) {
 877                                 OutputTypeAttributes (declaration);
 878
 879                                 output.Write (GetSafeName (declaration.Name));
 880
 881                                 GenerateGenericsParameters (declaration.TypeParameters);
 882
 883                                 IEnumerator enumerator = declaration.BaseTypes.GetEnumerator ();
 884                                 if (enumerator.MoveNext ()) {
 885                                         CodeTypeReference type = (CodeTypeReference) enumerator.Current;
 886
 887                                         output.Write (" : ");
 888                                         OutputType (type);
 889
 890                                         while (enumerator.MoveNext ()) {
 891                                                 type = (CodeTypeReference) enumerator.Current;
 892
 893                                                 output.Write (", ");
 894                                                 OutputType (type);
 895                                         }
 896                                 }
 897
 898                                 GenerateGenericsConstraints (declaration.TypeParameters);
 899                                 OutputStartBrace ();
 900                                 ++Indent;
 901                         } else {
 902                                 if ((declaration.TypeAttributes & TypeAttributes.VisibilityMask) == TypeAttributes.Public) {
 903                                         output.Write ("public ");
 904                                 }
 905
 906                                 CodeTypeDelegate delegateDecl = (CodeTypeDelegate) declaration;
 907                                 output.Write ("delegate ");
 908                                 OutputType (delegateDecl.ReturnType);
 909                                 output.Write (" ");
 910                                 output.Write (GetSafeName (declaration.Name));
 911                                 output.Write ("(");
 912                                 OutputParameters (delegateDecl.Parameters);
 913                                 output.WriteLine (");");
 914                         }
 915                 }
 916
 917                 protected override void GenerateTypeEnd (CodeTypeDeclaration declaration)
 918                 {
 919                         if (!IsCurrentDelegate) {
 920                                 --Indent;
 921                                 Output.WriteLine ("}");
 922                         }
 923                 }
 924
 925                 protected override void GenerateNamespaceStart (CodeNamespace ns)
 926                 {
 927                         TextWriter output = Output;
 928
 929                         string name = ns.Name;
 930                         if (name != null && name.Length != 0) {
 931                                 output.Write ("namespace ");
 932                                 output.Write (GetSafeName (name));
 933                                 OutputStartBrace ();
 934                                 ++Indent;
 935                         }
 936                 }
 937
 938                 protected override void GenerateNamespaceEnd (CodeNamespace ns)
 939                 {
 940                         string name = ns.Name;
 941                         if (name != null && name.Length != 0) {
 942                                 --Indent;
 943                                 Output.WriteLine ("}");
 944                         }
 945                 }
 946
 947                 protected override void GenerateNamespaceImport (CodeNamespaceImport import)
 948                 {
 949                         TextWriter output = Output;
 950
 951                         output.Write ("using ");
 952                         output.Write (GetSafeName (import.Namespace));
 953                         output.WriteLine (';');
 954                 }
 955
 956                 protected override void GenerateAttributeDeclarationsStart (CodeAttributeDeclarationCollection attributes)
 957                 {
 958                         Output.Write ('[');
 959                 }
 960
 961                 protected override void GenerateAttributeDeclarationsEnd (CodeAttributeDeclarationCollection attributes)
 962                 {
 963                         Output.Write (']');
 964                 }
 965
 966                 private void OutputStartBrace ()
 967                 {
 968                         if (Options.BracingStyle == "C") {
 969                                 Output.WriteLine ("");
 970                                 Output.WriteLine ("{");
 971                         } else {
 972                                 Output.WriteLine (" {");
 973                         }
 974                 }
 975
 976                 private void OutputAttributes (CodeAttributeDeclarationCollection attributes, string prefix, bool inline)
 977                 {
 978                         bool params_set = false;
 979
 980                         foreach (CodeAttributeDeclaration att in attributes) {
 981                                 if (att.Name == "System.ParamArrayAttribute") {
 982                                         params_set = true;
 983                                         continue;
 984                                 }
 985
 986                                 GenerateAttributeDeclarationsStart (attributes);
 987                                 if (prefix != null) {
 988                                         Output.Write (prefix);
 989                                 }
 990                                 OutputAttributeDeclaration (att);
 991                                 GenerateAttributeDeclarationsEnd (attributes);
 992                                 if (inline) {
 993                                         Output.Write (" ");
 994                                 } else {
 995                                         Output.WriteLine ();
 996                                 }
 997                         }
 998
 999                         if (params_set) {
1000                                 if (prefix != null)
1001                                         Output.Write (prefix);
1002                                 Output.Write ("params");
1003                                 if (inline)
1004                                         Output.Write (" ");
1005                                 else
1006                                         Output.WriteLine ();
1007                         }
1008                 }
1009
1010                 private void OutputAttributeDeclaration (CodeAttributeDeclaration attribute)
1011                 {
1012                         Output.Write (attribute.Name.Replace ('+', '.'));
1013                         Output.Write ('(');
1014                         IEnumerator enumerator = attribute.Arguments.GetEnumerator ();
1015                         if (enumerator.MoveNext ()) {
1016                                 CodeAttributeArgument argument = (CodeAttributeArgument) enumerator.Current;
1017                                 OutputAttributeArgument (argument);
1018
1019                                 while (enumerator.MoveNext ()) {
1020                                         Output.Write (", ");
1021                                         argument = (CodeAttributeArgument) enumerator.Current;
1022                                         OutputAttributeArgument (argument);
1023                                 }
1024                         }
1025                         Output.Write (')');
1026                 }
1027
1028                 protected override void OutputType (CodeTypeReference type)
1029                 {
1030                         Output.Write (GetTypeOutput (type));
1031                 }
1032
1033                 private void OutputVTableModifier (MemberAttributes attributes)
1034                 {
1035                         if ((attributes & MemberAttributes.VTableMask) == MemberAttributes.New) {
1036                                 Output.Write ("new ");
1037                         }
1038                 }
1039
1040                 protected override void OutputFieldScopeModifier (MemberAttributes attributes)
1041                 {
1042                         switch (attributes & MemberAttributes.ScopeMask) {
1043                                 case MemberAttributes.Static:
1044                                         Output.Write ("static ");
1045                                         break;
1046                                 case MemberAttributes.Const:
1047                                         Output.Write ("const ");
1048                                         break;
1049                         }
1050                 }
1051
1052
1053                 // Note: this method should in fact be private as in .NET 2.0, the
1054                 // CSharpCodeGenerator no longer derives from CodeGenerator but we
1055                 // still need to make this change.
1056                 protected override void OutputMemberAccessModifier (MemberAttributes attributes)
1057                 {
1058                         switch (attributes & MemberAttributes.AccessMask) {
1059                                 case MemberAttributes.Assembly:
1060                                 case MemberAttributes.FamilyAndAssembly:
1061                                         Output.Write ("internal ");
1062                                         break;
1063                                 case MemberAttributes.Family:
1064                                         Output.Write ("protected ");
1065                                         break;
1066                                 case MemberAttributes.FamilyOrAssembly:
1067                                         Output.Write ("protected internal ");
1068                                         break;
1069                                 case MemberAttributes.Private:
1070                                         Output.Write ("private ");
1071                                         break;
1072                                 case MemberAttributes.Public:
1073                                         Output.Write ("public ");
1074                                         break;
1075                         }
1076                 }
1077
1078                 // Note: this method should in fact be private as in .NET 2.0, the
1079                 // CSharpCodeGenerator no longer derives from CodeGenerator but we
1080                 // still need to make this change.
1081                 protected override void OutputMemberScopeModifier (MemberAttributes attributes)
1082                 {
1083                         switch (attributes & MemberAttributes.ScopeMask) {
1084                                 case MemberAttributes.Abstract:
1085                                         Output.Write ("abstract ");
1086                                         break;
1087                                 case MemberAttributes.Final:
1088                                         // do nothing
1089                                         break;
1090                                 case MemberAttributes.Static:
1091                                         Output.Write ("static ");
1092                                         break;
1093                                 case MemberAttributes.Override:
1094                                         Output.Write ("override ");
1095                                         break;
1096                                 default:
1097                                         MemberAttributes access = attributes & MemberAttributes.AccessMask;
1098                                         if (access == MemberAttributes.Assembly || access == MemberAttributes.Family || access == MemberAttributes.Public) {
1099                                                 Output.Write ("virtual ");
1100                                         }
1101                                         break;
1102                         }
1103                 }
1104
1105                 private void OutputTypeAttributes (CodeTypeDeclaration declaration)
1106                 {
1107                         TextWriter output = Output;
1108                         TypeAttributes attributes = declaration.TypeAttributes;
1109
1110                         switch (attributes & TypeAttributes.VisibilityMask) {
1111                                 case TypeAttributes.Public:
1112                                 case TypeAttributes.NestedPublic:
1113                                         output.Write ("public ");
1114                                         break;
1115                                 case TypeAttributes.NestedPrivate:
1116                                         output.Write ("private ");
1117                                         break;
1118                                 case TypeAttributes.NotPublic:
1119                                 case TypeAttributes.NestedFamANDAssem:
1120                                 case TypeAttributes.NestedAssembly:
1121                                         output.Write ("internal ");
1122                                         break;
1123                                 case TypeAttributes.NestedFamily:
1124                                         output.Write ("protected ");
1125                                         break;
1126                                 case TypeAttributes.NestedFamORAssem:
1127                                         output.Write ("protected internal ");
1128                                         break;
1129                         }
1130
1131                         if ((declaration.Attributes & MemberAttributes.New) != 0)
1132                                 output.Write ("new ");
1133
1134                         if (declaration.IsStruct) {
1135                                 if (declaration.IsPartial) {
1136                                         output.Write ("partial ");
1137                                 }
1138                                 output.Write ("struct ");
1139                         } else if (declaration.IsEnum) {
1140                                 output.Write ("enum ");
1141                         } else {
1142                                 if ((attributes & TypeAttributes.Interface) != 0) {
1143                                         if (declaration.IsPartial) {
1144                                                 output.Write ("partial ");
1145                                         }
1146                                         output.Write ("interface ");
1147                                 } else {
1148                                         if ((attributes & TypeAttributes.Sealed) != 0)
1149                                                 output.Write ("sealed ");
1150                                         if ((attributes & TypeAttributes.Abstract) != 0)
1151                                                 output.Write ("abstract ");
1152                                         if (declaration.IsPartial) {
1153                                                 output.Write ("partial ");
1154                                         }
1155                                         output.Write ("class ");
1156                                 }
1157                         }
1158                 }
1159
1160                 [MonoTODO ("Implement missing special characters")]
1161                 protected override string QuoteSnippetString (string value)
1162                 {
1163                         // FIXME: this is weird, but works.
1164                         string output = value.Replace ("\\", "\\\\");
1165                         output = output.Replace ("\"", "\\\"");
1166                         output = output.Replace ("\t", "\\t");
1167                         output = output.Replace ("\r", "\\r");
1168                         output = output.Replace ("\n", "\\n");
1169
1170                         return "\"" + output + "\"";
1171                 }
1172
1173                 protected override void GeneratePrimitiveExpression(CodePrimitiveExpression e)
1174                 {
1175                         if (e.Value is char) {
1176                                 this.GenerateCharValue ((char) e.Value);
1177                         } else if (e.Value is ushort) {
1178                                 ushort uc = (ushort) e.Value;
1179                                 Output.Write (uc.ToString(CultureInfo.InvariantCulture));
1180                         } else if (e.Value is uint) {
1181                                 uint ui = (uint) e.Value;
1182                                 Output.Write (ui.ToString(CultureInfo.InvariantCulture));
1183                                 Output.Write ("u");
1184                         } else if (e.Value is ulong) {
1185                                 ulong ul = (ulong) e.Value;
1186                                 Output.Write (ul.ToString(CultureInfo.InvariantCulture));
1187                                 Output.Write ("ul");
1188                         } else if (e.Value is sbyte) {
1189                                 sbyte sb = (sbyte) e.Value;
1190                                 Output.Write (sb.ToString(CultureInfo.InvariantCulture));
1191                         } else {
1192                                 base.GeneratePrimitiveExpression (e);
1193                         }
1194                 }
1195
1196                 private void GenerateCharValue (char c)
1197                 {
1198                         Output.Write ('\'');
1199
1200                         switch (c) {
1201                                 case '\0':
1202                                         Output.Write ("\\0");
1203                                         break;
1204                                 case '\t':
1205                                         Output.Write ("\\t");
1206                                         break;
1207                                 case '\n':
1208                                         Output.Write ("\\n");
1209                                         break;
1210                                 case '\r':
1211                                         Output.Write ("\\r");
1212                                         break;
1213                                 case '"':
1214                                         Output.Write ("\\\"");
1215                                         break;
1216                                 case '\'':
1217                                         Output.Write ("\\'");
1218                                         break;
1219                                 case '\\':
1220                                         Output.Write ("\\\\");
1221                                         break;
1222                                 case '\u2028':
1223                                         Output.Write ("\\u");
1224                                         Output.Write (((int) c).ToString ("X4", CultureInfo.InvariantCulture));
1225                                         break;
1226                                 case '\u2029':
1227                                         Output.Write ("\\u");
1228                                         Output.Write (((int) c).ToString ("X4", CultureInfo.InvariantCulture));
1229                                         break;
1230                                 default:
1231                                         Output.Write (c);
1232                                         break;
1233                         }
1234
1235                         Output.Write ('\'');
1236                 }
1237
1238                 protected override void GenerateSingleFloatValue (float f)
1239                 {
1240                         base.GenerateSingleFloatValue (f);
1241                         base.Output.Write ('F');
1242                 }
1243
1244                 protected override void GenerateDecimalValue (decimal d)
1245                 {
1246                         base.GenerateDecimalValue (d);
1247                         base.Output.Write ('m');
1248                 }
1249
1250                 protected override void GenerateParameterDeclarationExpression (CodeParameterDeclarationExpression e)
1251                 {
1252                         OutputAttributes (e.CustomAttributes, null, true);
1253                         OutputDirection (e.Direction);
1254                         OutputType (e.Type);
1255                         Output.Write (' ');
1256                         Output.Write (GetSafeName (e.Name));
1257                 }
1258
1259                 protected override void GenerateTypeOfExpression (CodeTypeOfExpression e)
1260                 {
1261                         Output.Write ("typeof(");
1262                         OutputType (e.Type);
1263                         Output.Write (")");
1264                 }
1265
1266                 /*
1267                  * ICodeGenerator
1268                  */
1269
1270                 protected override string CreateEscapedIdentifier (string value)
1271                 {
1272                         if (value == null)
1273                                 throw new NullReferenceException ("Argument identifier is null.");
1274                         return GetSafeName (value);
1275                 }
1276
1277                 protected override string CreateValidIdentifier (string value)
1278                 {
1279                         if (value == null)
1280                                 throw new NullReferenceException ();
1281
1282                         if (keywordsTable == null)
1283                                 FillKeywordTable ();
1284
1285                         if (keywordsTable.Contains (value))
1286                                 return "_" + value;
1287                         else
1288                                 return value;
1289                 }
1290
1291                 protected override string GetTypeOutput (CodeTypeReference type)
1292                 {
1293                         if ((type.Options & CodeTypeReferenceOptions.GenericTypeParameter) != 0)
1294                                 return type.BaseType;
1295
1296                         string typeOutput = null;
1297
1298                         if (type.ArrayElementType != null) {
1299                                 typeOutput = GetTypeOutput (type.ArrayElementType);
1300                         } else {
1301                                 typeOutput = DetermineTypeOutput (type);
1302                         }
1303
1304                         int rank = type.ArrayRank;
1305                         if (rank > 0) {
1306                                 typeOutput += '[';
1307                                 for (--rank; rank > 0; --rank) {
1308                                         typeOutput += ',';
1309                                 }
1310                                 typeOutput += ']';
1311                         }
1312
1313                         return typeOutput;
1314                 }
1315
1316                 private string DetermineTypeOutput (CodeTypeReference type)
1317                 {
1318                         string typeOutput = null;
1319                         string baseType = type.BaseType;
1320
1321                         switch (baseType.ToLower (System.Globalization.CultureInfo.InvariantCulture)) {
1322                                 case "system.int32":
1323                                         typeOutput = "int";
1324                                         break;
1325                                 case "system.int64":
1326                                         typeOutput = "long";
1327                                         break;
1328                                 case "system.int16":
1329                                         typeOutput = "short";
1330                                         break;
1331                                 case "system.boolean":
1332                                         typeOutput = "bool";
1333                                         break;
1334                                 case "system.char":
1335                                         typeOutput = "char";
1336                                         break;
1337                                 case "system.string":
1338                                         typeOutput = "string";
1339                                         break;
1340                                 case "system.object":
1341                                         typeOutput = "object";
1342                                         break;
1343                                 case "system.void":
1344                                         typeOutput = "void";
1345                                         break;
1346                                 case "system.byte":
1347                                         typeOutput = "byte";
1348                                         break;
1349                                 case "system.sbyte":
1350                                         typeOutput = "sbyte";
1351                                         break;
1352                                 case "system.decimal":
1353                                         typeOutput = "decimal";
1354                                         break;
1355                                 case "system.double":
1356                                         typeOutput = "double";
1357                                         break;
1358                                 case "system.single":
1359                                         typeOutput = "float";
1360                                         break;
1361                                 case "system.uint16":
1362                                         typeOutput = "ushort";
1363                                         break;
1364                                 case "system.uint32":
1365                                         typeOutput = "uint";
1366                                         break;
1367                                 case "system.uint64":
1368                                         typeOutput = "ulong";
1369                                         break;
1370                                 default:
1371                                         StringBuilder sb = new StringBuilder (baseType.Length);
1372                                         if ((type.Options & CodeTypeReferenceOptions.GlobalReference) != 0) {
1373                                                 sb.Append ("global::");
1374                                         }
1375
1376                                         int lastProcessedChar = 0;
1377                                         for (int i = 0; i < baseType.Length; i++) {
1378                                                 char currentChar = baseType[i];
1379                                                 if (currentChar != '+' && currentChar != '.') {
1380                                                         if (currentChar == '`') {
1381                                                                 sb.Append (CreateEscapedIdentifier (baseType.Substring (
1382                                                                         lastProcessedChar, i - lastProcessedChar)));
1383                                                                 // skip ` character
1384                                                                 i++;
1385                                                                 // determine number of type arguments to output
1386                                                                 int end = i;
1387                                                                 while (end < baseType.Length && Char.IsDigit (baseType [end]))
1388                                                                         end++;
1389                                                                 int typeArgCount = Int32.Parse (baseType.Substring (i, end - i));
1390                                                                 // output type arguments
1391                                                                 OutputTypeArguments (type.TypeArguments, sb, typeArgCount);
1392                                                                 // skip type argument indicator
1393                                                                 i = end;
1394                                                                 // if next character is . or +, then append .
1395                                                                 if ((i < baseType.Length) && ((baseType[i] == '+') || (baseType[i] == '.'))) {
1396                                                                         sb.Append ('.');
1397                                                                         // skip character that we just processed
1398                                                                         i++;
1399                                                                 }
1400                                                                 // save postion of last processed character
1401                                                                 lastProcessedChar = i;
1402                                                         }
1403                                                 } else {
1404                                                         sb.Append (CreateEscapedIdentifier (baseType.Substring (
1405                                                                 lastProcessedChar, i - lastProcessedChar)));
1406                                                         sb.Append ('.');
1407                                                         // skip separator
1408                                                         i++;
1409                                                         // save postion of last processed character
1410                                                         lastProcessedChar = i;
1411                                                 }
1412                                         }
1413
1414                                         // add characters that have not yet been processed
1415                                         if (lastProcessedChar < baseType.Length) {
1416                                                 sb.Append (CreateEscapedIdentifier (baseType.Substring (lastProcessedChar)));
1417                                         }
1418
1419                                         typeOutput = sb.ToString ();
1420                                         break;
1421                         }
1422                         return typeOutput;
1423                 }
1424
1425                 static bool is_identifier_start_character (char c)
1426                 {
1427                         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || c == '@' || Char.IsLetter (c);
1428                 }
1429
1430                 static bool is_identifier_part_character (char c)
1431                 {
1432                         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || (c >= '0' && c <= '9') || Char.IsLetter (c);
1433                 }
1434
1435                 protected override bool IsValidIdentifier (string identifier)
1436                 {
1437                         if (identifier == null || identifier.Length == 0)
1438                                 return false;
1439
1440                         if (keywordsTable == null)
1441                                 FillKeywordTable ();
1442
1443                         if (keywordsTable.Contains (identifier))
1444                                 return false;
1445
1446                         if (!is_identifier_start_character (identifier [0]))
1447                                 return false;
1448
1449                         for (int i = 1; i < identifier.Length; i ++)
1450                                 if (! is_identifier_part_character (identifier [i]))
1451                                         return false;
1452
1453                         return true;
1454                 }
1455
1456                 protected override bool Supports (GeneratorSupport supports)
1457                 {
1458                         return true;
1459                 }
1460
1461                 protected override void GenerateDirectives (CodeDirectiveCollection directives)
1462                 {
1463                         foreach (CodeDirective d in directives) {
1464                                 if (d is CodeChecksumPragma) {
1465                                         GenerateCodeChecksumPragma ((CodeChecksumPragma)d);
1466                                         continue;
1467                                 }
1468                                 if (d is CodeRegionDirective) {
1469                                         GenerateCodeRegionDirective ((CodeRegionDirective)d);
1470                                         continue;
1471                                 }
1472                                 throw new NotImplementedException ("Unknown CodeDirective");
1473                         }
1474                 }
1475
1476                 void GenerateCodeChecksumPragma (CodeChecksumPragma pragma)
1477                 {
1478                         Output.Write ("#pragma checksum ");
1479                         Output.Write (QuoteSnippetString (pragma.FileName));
1480                         Output.Write (" \"");
1481                         Output.Write (pragma.ChecksumAlgorithmId.ToString ("B"));
1482                         Output.Write ("\" \"");
1483                         if (pragma.ChecksumData != null) {
1484                                 foreach (byte b in pragma.ChecksumData) {
1485                                         Output.Write (b.ToString ("X2"));
1486                                 }
1487                         }
1488                         Output.WriteLine ("\"");
1489                 }
1490
1491                 void GenerateCodeRegionDirective (CodeRegionDirective region)
1492                 {
1493                         switch (region.RegionMode) {
1494                                 case CodeRegionMode.Start:
1495                                         Output.Write ("#region ");
1496                                         Output.WriteLine (region.RegionText);
1497                                         return;
1498                                 case CodeRegionMode.End:
1499                                         Output.WriteLine ("#endregion");
1500                                         return;
1501                         }
1502                 }
1503
1504                 void GenerateGenericsParameters (CodeTypeParameterCollection parameters)
1505                 {
1506                         int count = parameters.Count;
1507                         if (count == 0)
1508                                 return;
1509
1510                         Output.Write ('<');
1511                         for (int i = 0; i < count - 1; ++i) {
1512                                 Output.Write (parameters [i].Name);
1513                                 Output.Write (", ");
1514                         }
1515                         Output.Write (parameters [count - 1].Name);
1516                         Output.Write ('>');
1517                 }
1518
1519                 void GenerateGenericsConstraints (CodeTypeParameterCollection parameters)
1520                 {
1521                         int count = parameters.Count;
1522                         if (count == 0)
1523                                 return;
1524
1525                         bool indented = false;
1526
1527                         for (int i = 0; i < count; i++) {
1528                                 CodeTypeParameter p = parameters [i];
1529                                 bool hasConstraints = (p.Constraints.Count != 0);
1530                                 Output.WriteLine ();
1531                                 if (!hasConstraints && !p.HasConstructorConstraint)
1532                                         continue;
1533
1534                                 if (!indented) {
1535                                         ++Indent;
1536                                         indented = true;
1537                                 }
1538
1539                                 Output.Write ("where ");
1540                                 Output.Write (p.Name);
1541                                 Output.Write (" : ");
1542
1543                                 for (int j = 0; j < p.Constraints.Count; j++) {
1544                                         if (j > 0)
1545                                                 Output.Write (", ");
1546                                         OutputType (p.Constraints [j]);
1547                                 }
1548
1549                                 if (p.HasConstructorConstraint) {
1550                                         if (hasConstraints)
1551                                                 Output.Write (", ");
1552                                         Output.Write ("new");
1553                                         if (hasConstraints)
1554                                                 Output.Write (" ");
1555                                         Output.Write ("()");
1556                                 }
1557                         }
1558
1559                         if (indented)
1560                                 --Indent;
1561                 }
1562
1563                 string GetTypeArguments (CodeTypeReferenceCollection collection)
1564                 {
1565                         StringBuilder sb = new StringBuilder (" <");
1566                         foreach (CodeTypeReference r in collection) {
1567                                 sb.Append (GetTypeOutput (r));
1568                                 sb.Append (", ");
1569                         }
1570                         sb.Length--;
1571                         sb [sb.Length - 1] = '>';
1572                         return sb.ToString ();
1573                 }
1574
1575                 private void OutputTypeArguments (CodeTypeReferenceCollection typeArguments, StringBuilder sb, int count)
1576                 {
1577                         if (count == 0) {
1578                                 return;
1579                         } else if (typeArguments.Count == 0) {
1580                                 // generic type definition
1581                                 sb.Append ("<>");
1582                                 return;
1583                         }
1584
1585                         sb.Append ('<');
1586
1587                         // write first type argument
1588                         sb.Append (GetTypeOutput (typeArguments[0]));
1589                         // subsequent type argument are prefixed by ', ' separator
1590                         for (int i = 1; i < count; i++) {
1591                                 sb.Append (", ");
1592                                 sb.Append (GetTypeOutput (typeArguments[i]));
1593                         }
1594
1595                         sb.Append ('>');
1596                 }
1597
1598 #if false
1599                 //[MonoTODO]
1600                 public override void ValidateIdentifier (string identifier)
1601                 {
1602                 }
1603 #endif
1604
1605                 private string GetSafeName (string id)
1606                 {
1607                         if (keywordsTable == null) {
1608                                 FillKeywordTable ();
1609                         }
1610                         if (keywordsTable.Contains (id)) {
1611                                 return "@" + id;
1612                         } else {
1613                                 return id;
1614                         }
1615                 }
1616
1617                 static void FillKeywordTable ()
1618                 {
1619                         lock (keywords) {
1620                                 if (keywordsTable == null) {
1621                                         keywordsTable = new Hashtable ();
1622                                         foreach (string keyword in keywords) {
1623                                                 keywordsTable.Add (keyword, keyword);
1624                                         }
1625                                 }
1626                         }
1627                 }
1628
1629                 private static Hashtable keywordsTable;
1630                 private static string[] keywords = new string[] {
1631                         "abstract","event","new","struct","as","explicit","null","switch","base","extern",
1632                         "this","false","operator","throw","break","finally","out","true",
1633                         "fixed","override","try","case","params","typeof","catch","for",
1634                         "private","foreach","protected","checked","goto","public",
1635                         "unchecked","class","if","readonly","unsafe","const","implicit","ref",
1636                         "continue","in","return","using","virtual","default",
1637                         "interface","sealed","volatile","delegate","internal","do","is",
1638                         "sizeof","while","lock","stackalloc","else","static","enum",
1639                         "namespace",
1640                         "object","bool","byte","float","uint","char","ulong","ushort",
1641                         "decimal","int","sbyte","short","double","long","string","void",
1642                         "partial", "yield", "where"
1643                 };
1644         }
1645 }