mcs/class/System.Web.Services/System.Web.Services.Description/ProtocolImporter.cs

   1 //
   2 // System.Web.Services.Description.ProtocolImporter.cs
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //   Lluis Sanchez Gual (lluis@ximian.com)
   7 //
   8 // Copyright (C) Tim Coleman, 2002
   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 using System;
  33 using System.CodeDom;
  34 using System.CodeDom.Compiler;
  35 using System.Web.Services;
  36 using System.Web.Services.Protocols;
  37 using System.Xml.Serialization;
  38 using System.Xml;
  39 using System.Xml.Schema;
  40 using System.Collections;
  41 using System.Configuration;
  42
  43 namespace System.Web.Services.Description {
  44         public abstract class ProtocolImporter {
  45
  46                 #region Fields
  47
  48                 Binding binding;
  49                 string className;
  50                 CodeIdentifiers classNames;
  51                 CodeNamespace codeNamespace;
  52                 CodeCompileUnit codeCompileUnit;
  53                 CodeTypeDeclaration codeTypeDeclaration;
  54                 Message inputMessage;
  55                 string methodName;
  56                 Operation operation;
  57                 OperationBinding operationBinding;
  58                 Message outputMessage;
  59                 Port port;
  60                 PortType portType;
  61                 string protocolName;
  62                 Service service;
  63                 ServiceDescriptionImportWarnings warnings = (ServiceDescriptionImportWarnings)0;
  64                 ServiceDescriptionImporter descriptionImporter;
  65                 ImportInfo iinfo;
  66                 XmlSchemas xmlSchemas;
  67                 XmlSchemas soapSchemas;
  68
  69 #if NET_2_0
  70                 ArrayList asyncTypes = new ArrayList ();
  71 #endif
  72
  73                 #endregion // Fields
  74
  75                 #region Constructors
  76
  77                 protected ProtocolImporter ()
  78                 {
  79                 }
  80
  81                 #endregion // Constructors
  82
  83                 #region Properties
  84
  85                 [MonoTODO]
  86                 public XmlSchemas AbstractSchemas {
  87                         get { return descriptionImporter.Schemas; }
  88                 }
  89
  90                 public Binding Binding {
  91                         get { return binding; }
  92                 }
  93
  94                 public string ClassName {
  95                         get { return className; }
  96                 }
  97
  98                 public CodeIdentifiers ClassNames {
  99                         get { return classNames; }
 100                 }
 101
 102                 public CodeNamespace CodeNamespace {
 103                         get { return codeNamespace; }
 104                 }
 105
 106                 public CodeTypeDeclaration CodeTypeDeclaration {
 107                         get { return codeTypeDeclaration; }
 108                 }
 109
 110                 [MonoTODO]
 111                 public XmlSchemas ConcreteSchemas {
 112                         get { return descriptionImporter.Schemas; }
 113                 }
 114
 115                 public Message InputMessage {
 116                         get { return inputMessage; }
 117                 }
 118
 119                 public string MethodName {
 120                         get { return methodName; }
 121                 }
 122
 123                 public Operation Operation {
 124                         get { return operation; }
 125                 }
 126
 127                 public OperationBinding OperationBinding {
 128                         get { return operationBinding; }
 129                 }
 130
 131                 public Message OutputMessage {
 132                         get { return outputMessage; }
 133                 }
 134
 135                 public Port Port {
 136                         get { return port; }
 137                 }
 138
 139                 public PortType PortType {
 140                         get { return portType; }
 141                 }
 142
 143                 public abstract string ProtocolName {
 144                         get;
 145                 }
 146
 147                 public XmlSchemas Schemas {
 148                         get { return descriptionImporter.Schemas; }
 149                 }
 150
 151                 public Service Service {
 152                         get { return service; }
 153                 }
 154
 155                 public ServiceDescriptionCollection ServiceDescriptions {
 156                         get { return descriptionImporter.ServiceDescriptions; }
 157                 }
 158
 159                 public ServiceDescriptionImportStyle Style {
 160                         get { return descriptionImporter.Style; }
 161                 }
 162
 163                 public ServiceDescriptionImportWarnings Warnings {
 164                         get { return warnings; }
 165                         set { warnings = value; }
 166                 }
 167
 168                 internal ImportInfo ImportInfo
 169                 {
 170                         get { return iinfo; }
 171                 }
 172
 173                 internal XmlSchemas LiteralSchemas
 174                 {
 175                         get { return xmlSchemas; }
 176                 }
 177
 178                 internal XmlSchemas EncodedSchemas
 179                 {
 180                         get { return soapSchemas; }
 181                 }
 182
 183 #if NET_2_0
 184                 internal CodeGenerationOptions CodeGenerationOptions {
 185                         get { return descriptionImporter.CodeGenerationOptions; }
 186                 }
 187
 188                 internal ICodeGenerator CodeGenerator {
 189                         get { return descriptionImporter.CodeGenerator; }
 190                 }
 191
 192                 internal ImportContext ImportContext {
 193                         get { return descriptionImporter.Context; }
 194                 }
 195 #endif
 196
 197                 #endregion // Properties
 198
 199                 #region Methods
 200
 201                 internal bool Import (ServiceDescriptionImporter descriptionImporter, CodeNamespace codeNamespace, CodeCompileUnit codeCompileUnit, ArrayList importInfo)
 202                 {
 203                         this.descriptionImporter = descriptionImporter;
 204                         this.classNames = new CodeIdentifiers();;
 205                         this.codeNamespace = codeNamespace;
 206                         this.codeCompileUnit = codeCompileUnit;
 207
 208                         warnings = (ServiceDescriptionImportWarnings) 0;
 209
 210                         bool found = false;
 211
 212                         ClasifySchemas (importInfo);
 213
 214                         BeginNamespace ();
 215
 216                         foreach (ImportInfo info in importInfo)
 217                         {
 218                                 foreach (Service service in info.ServiceDescription.Services)
 219                                 {
 220                                         this.service = service;
 221                                         int bindingCount = 0;
 222                                         foreach (Port port in service.Ports)
 223                                         {
 224                                                 binding = ServiceDescriptions.GetBinding (port.Binding);
 225                                                 if (IsBindingSupported ()) bindingCount ++;
 226                                         }
 227
 228                                         foreach (Port port in service.Ports)
 229                                         {
 230                                                 this.iinfo = info;
 231                                                 this.port = port;
 232                                                 binding = ServiceDescriptions.GetBinding (port.Binding);
 233                                                 if (!IsBindingSupported ()) continue;
 234
 235                                                 found = true;
 236                                                 ImportPortBinding (bindingCount > 1);
 237                                         }
 238                                 }
 239                         }
 240
 241                         if (!found)
 242                         {
 243                                 // Looks like MS.NET generates classes for all bindings if
 244                                 // no services are present
 245
 246                                 foreach (ImportInfo info in importInfo)
 247                                 {
 248                                         this.iinfo = info;
 249                                         foreach (Binding b in info.ServiceDescription.Bindings)
 250                                         {
 251                                                 this.binding = b;
 252                                                 this.service = null;
 253                                                 this.port = null;
 254                                                 if (!IsBindingSupported ()) continue;
 255                                                 found = true;
 256                                                 ImportPortBinding (true);
 257                                         }
 258                                 }
 259                         }
 260
 261                         EndNamespace ();
 262
 263                         if (!found) warnings = ServiceDescriptionImportWarnings.NoCodeGenerated;
 264                         return true;
 265                 }
 266
 267                 void ImportPortBinding (bool multipleBindings)
 268                 {
 269                         if (port != null) {
 270                                 if (multipleBindings) className = port.Name;
 271                                 else className = service.Name;
 272                         }
 273                         else
 274                                 className = binding.Name;
 275
 276                         className = classNames.AddUnique (CodeIdentifier.MakeValid (className), port);
 277                         className = className.Replace ("_x0020_", "");  // MS.NET seems to do this
 278
 279                         try
 280                         {
 281                                 portType = ServiceDescriptions.GetPortType (binding.Type);
 282                                 if (portType == null) throw new Exception ("Port type not found: " + binding.Type);
 283
 284                                 CodeTypeDeclaration codeClass = BeginClass ();
 285                                 codeTypeDeclaration = codeClass;
 286                                 if (port != null)
 287                                         AddCodeType (codeClass, port.Documentation);
 288                                 codeClass.Attributes = MemberAttributes.Public;
 289
 290                                 if (service != null && service.Documentation != null && service.Documentation != "")
 291                                         AddComments (codeClass, service.Documentation);
 292
 293                                 if (Style == ServiceDescriptionImportStyle.Client) {
 294                                         CodeAttributeDeclaration att = new CodeAttributeDeclaration ("System.Diagnostics.DebuggerStepThroughAttribute");
 295                                         AddCustomAttribute (codeClass, att, true);
 296
 297                                         att = new CodeAttributeDeclaration ("System.ComponentModel.DesignerCategoryAttribute");
 298                                         att.Arguments.Add (GetArg ("code"));
 299                                         AddCustomAttribute (codeClass, att, true);
 300                                 }
 301                                 else
 302                                         codeClass.TypeAttributes = System.Reflection.TypeAttributes.Abstract | System.Reflection.TypeAttributes.Public;
 303
 304                                 if (binding.Operations.Count == 0) {
 305                                         warnings |= ServiceDescriptionImportWarnings.NoMethodsGenerated;
 306                                         return;
 307                                 }
 308
 309                                 foreach (OperationBinding oper in binding.Operations)
 310                                 {
 311                                         operationBinding = oper;
 312                                         operation = FindPortOperation ();
 313                                         if (operation == null) throw new Exception ("Operation " + operationBinding.Name + " not found in portType " + PortType.Name);
 314
 315                                         foreach (OperationMessage omsg in operation.Messages)
 316                                         {
 317                                                 Message msg = ServiceDescriptions.GetMessage (omsg.Message);
 318                                                 if (msg == null) throw new Exception ("Message not found: " + omsg.Message);
 319
 320                                                 if (omsg is OperationInput)
 321                                                         inputMessage = msg;
 322                                                 else
 323                                                         outputMessage = msg;
 324                                         }
 325
 326                                         CodeMemberMethod method = GenerateMethod ();
 327
 328                                         if (method != null)
 329                                         {
 330                                                 methodName = method.Name;
 331                                                 if (operation.Documentation != null && operation.Documentation != "")
 332                                                         AddComments (method, operation.Documentation);
 333 #if NET_2_0
 334                                                 if (Style == ServiceDescriptionImportStyle.Client)
 335                                                         AddAsyncMembers (method.Name, method);
 336 #endif
 337                                         }
 338                                 }
 339
 340 #if NET_2_0
 341                         if (Style == ServiceDescriptionImportStyle.Client)
 342                                 AddAsyncTypes ();
 343 #endif
 344
 345                                 EndClass ();
 346                         }
 347                         catch (InvalidOperationException ex)
 348                         {
 349                                 warnings |= ServiceDescriptionImportWarnings.NoCodeGenerated;
 350                                 UnsupportedBindingWarning (ex.Message);
 351                         }
 352                 }
 353
 354                 Operation FindPortOperation ()
 355                 {
 356                         string inMessage = null;
 357                         string outMessage = null;
 358                         int numMsg = 1;
 359
 360                         if (operationBinding.Input == null) throw new InvalidOperationException ("Input operation binding not found");
 361                         inMessage = (operationBinding.Input.Name != null) ? operationBinding.Input.Name : operationBinding.Name;
 362
 363                         if (operationBinding.Output != null) {
 364                                 outMessage = (operationBinding.Output.Name != null) ? operationBinding.Output.Name : operationBinding.Name;
 365                                 numMsg++;
 366                         }
 367
 368                         string operName = operationBinding.Name;
 369
 370                         Operation foundOper = null;
 371                         foreach (Operation oper in PortType.Operations)
 372                         {
 373                                 if (oper.Name == operName)
 374                                 {
 375                                         int hits = 0;
 376                                         foreach (OperationMessage omsg in oper.Messages)
 377                                         {
 378                                                 if (omsg is OperationInput && GetOperMessageName (omsg, operName) == inMessage) hits++;
 379                                                 if (omsg is OperationOutput && GetOperMessageName (omsg, operName) == outMessage) hits++;
 380                                         }
 381                                         if (hits == numMsg) return oper;
 382                                         foundOper = oper;
 383                                 }
 384                         }
 385                         return foundOper;
 386                 }
 387
 388                 string GetOperMessageName (OperationMessage msg, string operName)
 389                 {
 390                         if (msg.Name == null) return operName;
 391                         else return msg.Name;
 392                 }
 393
 394                 internal string GetServiceUrl (string location)
 395                 {
 396                         if (ImportInfo.AppSettingUrlKey == null || ImportInfo.AppSettingUrlKey == string.Empty)
 397                                 return location;
 398                         else
 399                         {
 400                                 string url;
 401                                 if (Style == ServiceDescriptionImportStyle.Server) throw new InvalidOperationException ("Cannot set appSettingUrlKey if Style is Server");
 402                                 url = ConfigurationSettings.AppSettings [ImportInfo.AppSettingUrlKey];
 403                                 if (ImportInfo.AppSettingBaseUrl != null && ImportInfo.AppSettingBaseUrl != string.Empty)
 404                                         url += "/" + ImportInfo.AppSettingBaseUrl + "/" + location;
 405                                 return url;
 406                         }
 407                 }
 408
 409                 void ClasifySchemas (ArrayList importInfo)
 410                 {
 411                         // I don't like this, but I could not find any other way of clasifying
 412                         // schemas between encoded and literal.
 413
 414                         xmlSchemas = new XmlSchemas ();
 415                         soapSchemas = new XmlSchemas ();
 416
 417                         foreach (ImportInfo info in importInfo)
 418                         {
 419                                 foreach (Service service in info.ServiceDescription.Services)
 420                                 {
 421                                         foreach (Port port in service.Ports)
 422                                         {
 423                                                 this.iinfo = info;
 424                                                 this.port = port;
 425                                                 binding = ServiceDescriptions.GetBinding (port.Binding);
 426                                                 if (binding == null) continue;
 427                                                 portType = ServiceDescriptions.GetPortType (binding.Type);
 428                                                 if (portType == null) continue;
 429
 430                                                 foreach (OperationBinding oper in binding.Operations)
 431                                                 {
 432                                                         operationBinding = oper;
 433                                                         operation = FindPortOperation ();
 434                                                         if (operation == null) continue;
 435
 436                                                         foreach (OperationMessage omsg in operation.Messages)
 437                                                         {
 438                                                                 Message msg = ServiceDescriptions.GetMessage (omsg.Message);
 439                                                                 if (msg == null) continue;
 440
 441                                                                 if (omsg is OperationInput)
 442                                                                         inputMessage = msg;
 443                                                                 else
 444                                                                         outputMessage = msg;
 445                                                         }
 446
 447                                                         if (GetMessageEncoding (oper.Input) == SoapBindingUse.Encoded)
 448                                                                 AddMessageSchema (soapSchemas, oper.Input, inputMessage);
 449                                                         else
 450                                                                 AddMessageSchema (xmlSchemas, oper.Input, inputMessage);
 451
 452                                                         if (oper.Output != null) {
 453                                                                 if (GetMessageEncoding (oper.Output) == SoapBindingUse.Encoded)
 454                                                                         AddMessageSchema (soapSchemas, oper.Output, outputMessage);
 455                                                                 else
 456                                                                         AddMessageSchema (xmlSchemas, oper.Output, outputMessage);
 457                                                         }
 458                                                 }
 459                                         }
 460                                 }
 461                         }
 462
 463                         XmlSchemas defaultList = xmlSchemas;
 464
 465                         if (xmlSchemas.Count == 0 && soapSchemas.Count > 0)
 466                                 defaultList = soapSchemas;
 467
 468                         // Schemas not referenced by any message
 469                         foreach (XmlSchema sc in Schemas)
 470                         {
 471                                 if (!soapSchemas.Contains (sc) && !xmlSchemas.Contains (sc)) {
 472                                         if (ImportsEncodedNamespace (sc))
 473                                                 soapSchemas.Add (sc);
 474                                         else
 475                                                 defaultList.Add (sc);
 476                                 }
 477                         }
 478                 }
 479
 480                 void AddMessageSchema (XmlSchemas schemas, MessageBinding mb, Message msg)
 481                 {
 482                         foreach (MessagePart part in msg.Parts)
 483                         {
 484                                 if (part.Element != XmlQualifiedName.Empty)
 485                                         AddIncludingSchema (schemas, part.Element.Namespace);
 486                                 else if (part.Type != XmlQualifiedName.Empty)
 487                                         AddIncludingSchema (schemas, part.Type.Namespace);
 488                         }
 489                         SoapBodyBinding sbb = mb.Extensions.Find (typeof(SoapBodyBinding)) as SoapBodyBinding;
 490                         if (sbb != null) AddIncludingSchema (schemas, sbb.Namespace);
 491                 }
 492
 493                 void AddIncludingSchema (XmlSchemas list, string ns)
 494                 {
 495                         XmlSchema sc = Schemas [ns];
 496                         if (sc == null || list.Contains (sc)) return;
 497                         list.Add (sc);
 498                         foreach (XmlSchemaObject ob in sc.Includes)
 499                         {
 500                                 XmlSchemaImport import = ob as XmlSchemaImport;
 501                                 if (import != null) AddIncludingSchema (list, import.Namespace);
 502                         }
 503                 }
 504
 505                 SoapBindingUse GetMessageEncoding (MessageBinding mb)
 506                 {
 507                         SoapBodyBinding sbb = mb.Extensions.Find (typeof(SoapBodyBinding)) as SoapBodyBinding;
 508                         if (sbb == null)
 509                         {
 510                                 if (mb is InputBinding) return SoapBindingUse.Encoded;
 511                                 else return SoapBindingUse.Literal;
 512                         }
 513                         else
 514                                 if (sbb.Use == SoapBindingUse.Encoded) return SoapBindingUse.Encoded;
 515                         else
 516                                 return SoapBindingUse.Literal;
 517                 }
 518
 519                 bool ImportsEncodedNamespace (XmlSchema sc)
 520                 {
 521                         foreach (XmlSchemaObject ob in sc.Includes)
 522                         {
 523                                 XmlSchemaImport import = ob as XmlSchemaImport;
 524                                 if (import.Namespace == SoapProtocolReflector.EncodingNamespace) return true;
 525                         }
 526                         return false;
 527                 }
 528
 529 #if NET_2_0
 530
 531                 void AddAsyncTypes ()
 532                 {
 533                         foreach (CodeTypeDeclaration type in asyncTypes)
 534                                 codeNamespace.Types.Add (type);
 535                         asyncTypes.Clear ();
 536                 }
 537
 538                 void AddAsyncMembers (string messageName, CodeMemberMethod method)
 539                 {
 540                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 541                         CodePrimitiveExpression enull = new CodePrimitiveExpression (null);
 542
 543                         CodeMemberField codeField = new CodeMemberField (typeof(System.Threading.SendOrPostCallback), messageName + "OperationCompleted");
 544                         codeField.Attributes = MemberAttributes.Private;
 545                         CodeTypeDeclaration.Members.Add (codeField);
 546
 547                         // Event arguments class
 548
 549                         string argsClassName = classNames.AddUnique (messageName + "CompletedEventArgs", null);
 550                         CodeTypeDeclaration argsClass = new CodeTypeDeclaration (argsClassName);
 551                         argsClass.BaseTypes.Add (new CodeTypeReference ("System.ComponentModel.AsyncCompletedEventArgs"));
 552
 553                         CodeMemberField resultsField = new CodeMemberField (typeof(object[]), "results");
 554                         resultsField.Attributes = MemberAttributes.Private;
 555                         argsClass.Members.Add (resultsField);
 556
 557                         CodeConstructor cc = new CodeConstructor ();
 558                         cc.Attributes = MemberAttributes.Assembly;
 559                         cc.Parameters.Add (new CodeParameterDeclarationExpression (typeof(object[]), "results"));
 560                         cc.Parameters.Add (new CodeParameterDeclarationExpression (typeof(System.Exception), "exception"));
 561                         cc.Parameters.Add (new CodeParameterDeclarationExpression (typeof(bool), "cancelled"));
 562                         cc.Parameters.Add (new CodeParameterDeclarationExpression (typeof(object), "userState"));
 563                         cc.BaseConstructorArgs.Add (new CodeVariableReferenceExpression ("exception"));
 564                         cc.BaseConstructorArgs.Add (new CodeVariableReferenceExpression ("cancelled"));
 565                         cc.BaseConstructorArgs.Add (new CodeVariableReferenceExpression ("userState"));
 566                         CodeExpression thisResults = new CodeFieldReferenceExpression (ethis, "results");
 567                         cc.Statements.Add (new CodeAssignStatement (thisResults, new CodeVariableReferenceExpression ("results")));
 568                         argsClass.Members.Add (cc);
 569
 570                         int ind = 0;
 571
 572                         if (method.ReturnType.BaseType != "System.Void")
 573                                 argsClass.Members.Add (CreateArgsProperty (method.ReturnType, "Result", ind++));
 574
 575                         foreach (CodeParameterDeclarationExpression par in method.Parameters)
 576                         {
 577                                 if (par.Direction == FieldDirection.Out || par.Direction == FieldDirection.Ref)
 578                                         argsClass.Members.Add (CreateArgsProperty (par.Type, par.Name, ind++));
 579                         }
 580
 581                         bool needsArgsClass = (ind > 0);
 582                         if (needsArgsClass)
 583                                 asyncTypes.Add (argsClass);
 584                         else
 585                                 argsClassName = "System.ComponentModel.AsyncCompletedEventArgs";
 586
 587                         // Event delegate type
 588
 589                         CodeTypeDelegate delegateType = new CodeTypeDelegate (messageName + "CompletedEventHandler");
 590                         delegateType.Parameters.Add (new CodeParameterDeclarationExpression (typeof(object), "sender"));
 591                         delegateType.Parameters.Add (new CodeParameterDeclarationExpression (argsClassName, "args"));
 592
 593                         // Event member
 594
 595                         CodeMemberEvent codeEvent = new CodeMemberEvent ();
 596                         codeEvent.Name = messageName + "Completed";
 597                         codeEvent.Type = new CodeTypeReference (delegateType.Name);
 598                         CodeTypeDeclaration.Members.Add (codeEvent);
 599
 600                         // Async method (without user state param)
 601
 602                         CodeMemberMethod am = new CodeMemberMethod ();
 603                         am.Attributes = MemberAttributes.Public | MemberAttributes.Final;
 604                         am.Name = method.Name + "Async";
 605                         am.ReturnType = new CodeTypeReference (typeof(void));
 606                         CodeMethodInvokeExpression inv;
 607                         inv = new CodeMethodInvokeExpression (ethis, am.Name);
 608                         am.Statements.Add (inv);
 609
 610                         // On...Completed method
 611
 612                         CodeMemberMethod onCompleted = new CodeMemberMethod ();
 613                         onCompleted.Name = "On" + messageName + "Completed";
 614                         onCompleted.Attributes = MemberAttributes.Private | MemberAttributes.Final;
 615                         onCompleted.ReturnType = new CodeTypeReference (typeof(void));
 616                         onCompleted.Parameters.Add (new CodeParameterDeclarationExpression (typeof(object), "arg"));
 617
 618                         CodeConditionStatement anIf = new CodeConditionStatement ();
 619
 620                         CodeExpression eventField = new CodeEventReferenceExpression (ethis, codeEvent.Name);
 621                         anIf.Condition = new CodeBinaryOperatorExpression (eventField, CodeBinaryOperatorType.IdentityInequality, enull);
 622                         CodeExpression castedArg = new CodeCastExpression (typeof(System.Web.Services.Protocols.InvokeCompletedEventArgs), new CodeVariableReferenceExpression ("arg"));
 623                         CodeStatement invokeArgs = new CodeVariableDeclarationStatement (typeof(System.Web.Services.Protocols.InvokeCompletedEventArgs), "invokeArgs", castedArg);
 624                         anIf.TrueStatements.Add (invokeArgs);
 625
 626                         CodeDelegateInvokeExpression delegateInvoke = new CodeDelegateInvokeExpression ();
 627                         delegateInvoke.TargetObject = eventField;
 628                         delegateInvoke.Parameters.Add (ethis);
 629                         CodeObjectCreateExpression argsInstance = new CodeObjectCreateExpression (argsClassName);
 630                         CodeExpression invokeArgsVar = new CodeVariableReferenceExpression ("invokeArgs");
 631                         if (needsArgsClass) argsInstance.Parameters.Add (new CodeFieldReferenceExpression (invokeArgsVar, "Results"));
 632                         argsInstance.Parameters.Add (new CodeFieldReferenceExpression (invokeArgsVar, "Error"));
 633                         argsInstance.Parameters.Add (new CodeFieldReferenceExpression (invokeArgsVar, "Cancelled"));
 634                         argsInstance.Parameters.Add (new CodeFieldReferenceExpression (invokeArgsVar, "UserState"));
 635                         delegateInvoke.Parameters.Add (argsInstance);
 636                         anIf.TrueStatements.Add (delegateInvoke);
 637
 638                         onCompleted.Statements.Add (anIf);
 639
 640                         // Async method
 641
 642                         CodeMemberMethod asyncMethod = new CodeMemberMethod ();
 643                         asyncMethod.Attributes = MemberAttributes.Public | MemberAttributes.Final;
 644                         asyncMethod.Name = method.Name + "Async";
 645                         asyncMethod.ReturnType = new CodeTypeReference (typeof(void));
 646
 647                         CodeExpression delegateField = new CodeFieldReferenceExpression (ethis, codeField.Name);
 648                         anIf = new CodeConditionStatement ();
 649                         anIf.Condition = new CodeBinaryOperatorExpression (delegateField, CodeBinaryOperatorType.IdentityEquality, enull);;
 650                         CodeExpression delegateRef = new CodeMethodReferenceExpression (ethis, onCompleted.Name);
 651                         CodeExpression newDelegate = new CodeObjectCreateExpression (typeof(System.Threading.SendOrPostCallback), delegateRef);
 652                         CodeAssignStatement cas = new CodeAssignStatement (delegateField, newDelegate);
 653                         anIf.TrueStatements.Add (cas);
 654                         asyncMethod.Statements.Add (anIf);
 655
 656                         CodeArrayCreateExpression paramsArray = new CodeArrayCreateExpression (typeof(object));
 657
 658                         // Assign parameters
 659
 660                         CodeIdentifiers paramsIds = new CodeIdentifiers ();
 661
 662                         foreach (CodeParameterDeclarationExpression par in method.Parameters)
 663                         {
 664                                 paramsIds.Add (par.Name, null);
 665                                 if (par.Direction == FieldDirection.In || par.Direction == FieldDirection.Ref) {
 666                                         CodeParameterDeclarationExpression inpar = new CodeParameterDeclarationExpression (par.Type, par.Name);
 667                                         am.Parameters.Add (inpar);
 668                                         asyncMethod.Parameters.Add (inpar);
 669                                         inv.Parameters.Add (new CodeVariableReferenceExpression (par.Name));
 670                                         paramsArray.Initializers.Add (new CodeVariableReferenceExpression (par.Name));
 671                                 }
 672                         }
 673
 674
 675                         inv.Parameters.Add (enull);
 676
 677                         string userStateName = paramsIds.AddUnique ("userState", null);
 678                         asyncMethod.Parameters.Add (new CodeParameterDeclarationExpression (typeof(object), userStateName));
 679
 680                         CodeExpression userStateVar = new CodeVariableReferenceExpression (userStateName);
 681                         asyncMethod.Statements.Add (BuildInvokeAsync (messageName, paramsArray, delegateField, userStateVar));
 682
 683                         CodeTypeDeclaration.Members.Add (am);
 684                         CodeTypeDeclaration.Members.Add (asyncMethod);
 685                         CodeTypeDeclaration.Members.Add (onCompleted);
 686
 687                         asyncTypes.Add (delegateType);
 688                 }
 689
 690                 CodeMemberProperty CreateArgsProperty (CodeTypeReference type, string name, int ind)
 691                 {
 692                         CodeMemberProperty prop = new CodeMemberProperty ();
 693                         prop.Attributes = MemberAttributes.Public | MemberAttributes.Final;
 694                         prop.HasGet = true;
 695                         prop.HasSet = false;
 696                         prop.Name = name;
 697                         prop.Type = type;
 698                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 699                         CodeExpression thisResults = new CodeFieldReferenceExpression (ethis, "results");
 700                         prop.GetStatements.Add (new CodeMethodInvokeExpression (ethis, "RaiseExceptionIfNecessary"));
 701                         CodeArrayIndexerExpression arrValue = new CodeArrayIndexerExpression (thisResults, new CodePrimitiveExpression (ind));
 702                         CodeExpression retval = new CodeCastExpression (type, arrValue);
 703                         prop.GetStatements.Add (new CodeMethodReturnStatement (retval));
 704                         return prop;
 705                 }
 706
 707                 internal virtual CodeExpression BuildInvokeAsync (string messageName, CodeArrayCreateExpression paramsArray, CodeExpression delegateField, CodeExpression userStateVar)
 708                 {
 709                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 710                         CodeMethodInvokeExpression inv2 = new CodeMethodInvokeExpression (ethis, "InvokeAsync");
 711                         inv2.Parameters.Add (new CodePrimitiveExpression (messageName));
 712                         inv2.Parameters.Add (paramsArray);
 713                         inv2.Parameters.Add (delegateField);
 714                         inv2.Parameters.Add (userStateVar);
 715                         return inv2;
 716                 }
 717 #endif
 718
 719                 [MonoTODO]
 720                 public void AddExtensionWarningComments (CodeCommentStatementCollection comments, ServiceDescriptionFormatExtensionCollection extensions)
 721                 {
 722                         throw new NotImplementedException ();
 723                 }
 724
 725                 protected abstract CodeTypeDeclaration BeginClass ();
 726
 727                 protected virtual void BeginNamespace ()
 728                 {
 729                 }
 730
 731                 protected virtual void EndClass ()
 732                 {
 733                 }
 734
 735                 protected virtual void EndNamespace ()
 736                 {
 737                 }
 738
 739                 protected abstract CodeMemberMethod GenerateMethod ();
 740                 protected abstract bool IsBindingSupported ();
 741                 protected abstract bool IsOperationFlowSupported (OperationFlow flow);
 742
 743                 [MonoTODO]
 744                 public Exception OperationBindingSyntaxException (string text)
 745                 {
 746                         throw new NotImplementedException ();
 747                 }
 748
 749                 [MonoTODO]
 750                 public Exception OperationSyntaxException (string text)
 751                 {
 752                         throw new NotImplementedException ();
 753                 }
 754
 755                 public void UnsupportedBindingWarning (string text)
 756                 {
 757                         warnings |= ServiceDescriptionImportWarnings.UnsupportedBindingsIgnored;
 758                         AddGlobalComments ("WARNING: Could not generate proxy for binding " + binding.Name + ". " + text);
 759                 }
 760
 761                 public void UnsupportedOperationBindingWarning (string text)
 762                 {
 763                         warnings |= ServiceDescriptionImportWarnings.UnsupportedOperationsIgnored;
 764                         AddGlobalComments ("WARNING: Could not generate operation " + OperationBinding.Name + ". " + text);
 765                 }
 766
 767                 public void UnsupportedOperationWarning (string text)
 768                 {
 769                         warnings |= ServiceDescriptionImportWarnings.UnsupportedOperationsIgnored;
 770                         AddGlobalComments ("WARNING: Could not generate operation " + OperationBinding.Name + ". " + text);
 771                 }
 772
 773                 void AddGlobalComments (string comments)
 774                 {
 775                         codeNamespace.Comments.Add (new CodeCommentStatement (comments, false));
 776                 }
 777
 778                 void AddComments (CodeTypeMember member, string comments)
 779                 {
 780                         if (comments == null || comments == "") member.Comments.Add (new CodeCommentStatement ("<remarks/>", true));
 781                         else member.Comments.Add (new CodeCommentStatement ("<remarks>\n" + comments + "\n</remarks>", true));
 782                 }
 783
 784                 void AddCodeType (CodeTypeDeclaration type, string comments)
 785                 {
 786                         AddComments (type, comments);
 787                         codeNamespace.Types.Add (type);
 788                 }
 789
 790                 internal void AddCustomAttribute (CodeTypeMember ctm, CodeAttributeDeclaration att, bool addIfNoParams)
 791                 {
 792                         if (att.Arguments.Count == 0 && !addIfNoParams) return;
 793
 794                         if (ctm.CustomAttributes == null) ctm.CustomAttributes = new CodeAttributeDeclarationCollection ();
 795                         ctm.CustomAttributes.Add (att);
 796                 }
 797
 798                 internal void AddCustomAttribute (CodeTypeMember ctm, string name, params CodeAttributeArgument[] args)
 799                 {
 800                         if (ctm.CustomAttributes == null) ctm.CustomAttributes = new CodeAttributeDeclarationCollection ();
 801                         ctm.CustomAttributes.Add (new CodeAttributeDeclaration (name, args));
 802                 }
 803
 804                 internal CodeAttributeArgument GetArg (string name, object value)
 805                 {
 806                         return new CodeAttributeArgument (name, new CodePrimitiveExpression(value));
 807                 }
 808
 809                 internal CodeAttributeArgument GetEnumArg (string name, string enumType, string enumValue)
 810                 {
 811                         return new CodeAttributeArgument (name, new CodeFieldReferenceExpression (new CodeTypeReferenceExpression(enumType), enumValue));
 812                 }
 813
 814                 internal CodeAttributeArgument GetArg (object value)
 815                 {
 816                         return new CodeAttributeArgument (new CodePrimitiveExpression(value));
 817                 }
 818
 819                 internal CodeAttributeArgument GetTypeArg (string name, string typeName)
 820                 {
 821                         return new CodeAttributeArgument (name, new CodeTypeOfExpression(typeName));
 822                 }
 823
 824                 #endregion
 825         }
 826 }