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