mcs/class/System.Web/System.Web.Compilation/PageCompiler.cs

   1 //
   2 // System.Web.Compilation.PageCompiler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 using System;
  31 using System.CodeDom;
  32 using System.Collections;
  33 using System.Collections.Generic;
  34 using System.IO;
  35 using System.Reflection;
  36 using System.Text;
  37 using System.Web.Configuration;
  38 using System.Web.UI;
  39 using System.Web.SessionState;
  40 using System.Web.Util;
  41 using System.Web.Profile;
  42
  43 namespace System.Web.Compilation
  44 {
  45         class PageCompiler : TemplateControlCompiler
  46         {
  47                 PageParser pageParser;
  48                 static CodeTypeReference intRef = new CodeTypeReference (typeof (int));
  49
  50                 public PageCompiler (PageParser pageParser)
  51                         : base (pageParser)
  52                 {
  53                         this.pageParser = pageParser;
  54                 }
  55
  56                 protected override void CreateStaticFields ()
  57                 {
  58                         base.CreateStaticFields ();
  59
  60                         CodeMemberField fld = new CodeMemberField (typeof (object), "__fileDependencies");
  61                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
  62                         fld.InitExpression = new CodePrimitiveExpression (null);
  63                         mainClass.Members.Add (fld);
  64
  65                         if (pageParser.OutputCache) {
  66                                 fld = new CodeMemberField (typeof (OutputCacheParameters), "__outputCacheSettings");
  67                                 fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
  68                                 fld.InitExpression = new CodePrimitiveExpression (null);
  69                                 mainClass.Members.Add (fld);
  70                         }
  71                 }
  72
  73                 protected override void CreateConstructor (CodeStatementCollection localVars,
  74                                                            CodeStatementCollection trueStmt)
  75                 {
  76                         MainDirectiveAttribute <string> masterPageFile = pageParser.MasterPageFile;
  77                         if (masterPageFile != null && !masterPageFile.IsExpression)
  78                                 // This is here just to trigger master page build, so that its type
  79                                 // is available when compiling the page itself.
  80                                 BuildManager.GetCompiledType (masterPageFile.Value);
  81
  82                         MainDirectiveAttribute <string> clientTarget;
  83                         clientTarget = pageParser.ClientTarget;
  84                         if (clientTarget != null) {
  85                                 CodeExpression prop;
  86                                 prop = new CodePropertyReferenceExpression (thisRef, "ClientTarget");
  87                                 CodeExpression ct = null;
  88
  89                                 if (clientTarget.IsExpression) {
  90                                         var pi = GetFieldOrProperty (typeof (Page), "ClientTarget") as PropertyInfo;
  91                                         if (pi != null)
  92                                                 ct = CompileExpression (pi, pi.PropertyType, clientTarget.UnparsedValue, false);
  93                                 }
  94
  95                                 if (ct == null)
  96                                         ct = new CodePrimitiveExpression (clientTarget.Value);
  97                                 if (localVars == null)
  98                                         localVars = new CodeStatementCollection ();
  99                                 localVars.Add (new CodeAssignStatement (prop, ct));
 100                         }
 101
 102                         ArrayList deps = pageParser.Dependencies;
 103                         int depsCount = deps != null ? deps.Count : 0;
 104
 105                         if (depsCount > 0) {
 106                                 if (localVars == null)
 107                                         localVars = new CodeStatementCollection ();
 108                                 if (trueStmt == null)
 109                                         trueStmt = new CodeStatementCollection ();
 110
 111                                 CodeAssignStatement assign;
 112                                 localVars.Add (
 113                                         new CodeVariableDeclarationStatement (
 114                                                 typeof (string[]),
 115                                                 "dependencies")
 116                                 );
 117
 118                                 CodeVariableReferenceExpression dependencies = new CodeVariableReferenceExpression ("dependencies");
 119                                 trueStmt.Add (
 120                                         new CodeAssignStatement (dependencies, new CodeArrayCreateExpression (typeof (string), depsCount))
 121                                 );
 122
 123                                 CodeArrayIndexerExpression arrayIndex;
 124                                 object o;
 125
 126                                 for (int i = 0; i < depsCount; i++) {
 127                                         o = deps [i];
 128                                         arrayIndex = new CodeArrayIndexerExpression (dependencies, new CodeExpression[] {new CodePrimitiveExpression (i)});
 129                                         assign = new CodeAssignStatement (arrayIndex, new CodePrimitiveExpression (o));
 130                                         trueStmt.Add (assign);
 131                                 }
 132
 133                                 CodeMethodInvokeExpression getDepsCall = new CodeMethodInvokeExpression (
 134                                         thisRef,
 135                                         "GetWrappedFileDependencies",
 136                                         new CodeExpression[] {dependencies}
 137                                 );
 138                                 assign = new CodeAssignStatement (GetMainClassFieldReferenceExpression ("__fileDependencies"), getDepsCall);
 139
 140                                 trueStmt.Add (assign);
 141                         }
 142
 143                         base.CreateConstructor (localVars, trueStmt);
 144                 }
 145
 146                 protected override void AddInterfaces ()
 147                 {
 148                         base.AddInterfaces ();
 149                         CodeTypeReference cref;
 150
 151                         if (pageParser.EnableSessionState) {
 152                                 cref = new CodeTypeReference (typeof (IRequiresSessionState));
 153                                 if (partialClass != null)
 154                                         partialClass.BaseTypes.Add (cref);
 155                                 else
 156                                         mainClass.BaseTypes.Add (cref);
 157                         }
 158
 159                         if (pageParser.ReadOnlySessionState) {
 160                                 cref = new CodeTypeReference (typeof (IReadOnlySessionState));
 161                                 if (partialClass != null)
 162                                         partialClass.BaseTypes.Add (cref);
 163                                 else
 164                                         mainClass.BaseTypes.Add (cref);
 165                         }
 166
 167                         if (pageParser.Async)
 168                                 mainClass.BaseTypes.Add (new CodeTypeReference (typeof (System.Web.IHttpAsyncHandler)));
 169
 170                         mainClass.BaseTypes.Add (new CodeTypeReference (typeof (System.Web.IHttpHandler)));
 171                 }
 172
 173                 void CreateGetTypeHashCode ()
 174                 {
 175                         CodeMemberMethod method = new CodeMemberMethod ();
 176                         method.ReturnType = intRef;
 177                         method.Name = "GetTypeHashCode";
 178                         method.Attributes = MemberAttributes.Public | MemberAttributes.Override;
 179                         Random rnd = new Random (pageParser.InputFile.GetHashCode ());
 180                         method.Statements.Add (new CodeMethodReturnStatement (new CodePrimitiveExpression (rnd.Next ())));
 181                         mainClass.Members.Add (method);
 182                 }
 183
 184                 static CodeExpression GetExpressionForValueAndType (object value, Type valueType)
 185                 {
 186                         // Put short circuit types here
 187                         if (valueType == typeof (TimeSpan)) {
 188                                 CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression (
 189                                         new CodeTypeReferenceExpression (typeof (TimeSpan)),
 190                                         "Parse");
 191
 192                                 return new CodeMethodInvokeExpression (
 193                                         mref,
 194                                         new CodeExpression[] { new CodePrimitiveExpression (((TimeSpan) value).ToString ()) }
 195                                 );
 196                         }
 197
 198                         throw new HttpException (String.Format ("Unable to create assign expression for type '{0}'.", valueType));
 199                 }
 200
 201                 static CodeAssignStatement CreatePropertyAssign (CodeExpression owner, string name, CodeExpression rhs)
 202                 {
 203                         return new CodeAssignStatement (new CodePropertyReferenceExpression (owner, name), rhs);
 204                 }
 205
 206                 static CodeAssignStatement CreatePropertyAssign (CodeExpression owner, string name, object value)
 207                 {
 208                         CodeExpression rhs;
 209                         if (value == null || value is string)
 210                                 rhs = new CodePrimitiveExpression (value);
 211                         else {
 212                                 Type vt = value.GetType ();
 213
 214                                 if (vt.IsPrimitive)
 215                                         rhs = new CodePrimitiveExpression (value);
 216                                 else
 217                                         rhs = GetExpressionForValueAndType (value, vt);
 218                         }
 219
 220                         return CreatePropertyAssign (owner, name, rhs);
 221                 }
 222
 223                 static CodeAssignStatement CreatePropertyAssign (string name, object value)
 224                 {
 225                         return CreatePropertyAssign (thisRef, name, value);
 226                 }
 227
 228                 void AssignPropertyWithExpression <T> (CodeMemberMethod method, string name, MainDirectiveAttribute <T> value, ILocation location)
 229                 {
 230                         if (value == null)
 231                                 return;
 232                         CodeAssignStatement assign;
 233                         CodeExpression rhs = null;
 234
 235                         if (value.IsExpression) {
 236                                 var pi = GetFieldOrProperty (typeof (Page), name) as PropertyInfo;
 237                                 if (pi != null)
 238                                         rhs = CompileExpression (pi, pi.PropertyType, value.UnparsedValue, false);
 239                         }
 240
 241                         if (rhs != null)
 242                                 assign = CreatePropertyAssign (thisRef, name, rhs);
 243                         else
 244                                 assign = CreatePropertyAssign (name, value.Value);
 245
 246                         method.Statements.Add (AddLinePragma (assign, location));
 247                 }
 248
 249                 void AddStatementsFromDirective (ControlBuilder builder, CodeMemberMethod method, ILocation location)
 250                 {
 251                         AssignPropertyWithExpression <string> (method, "ResponseEncoding", pageParser.ResponseEncoding, location);
 252                         AssignPropertyWithExpression <int> (method, "CodePage", pageParser.CodePage, location);
 253                         AssignPropertyWithExpression <int> (method, "LCID", pageParser.LCID, location);
 254
 255                         string contentType = pageParser.ContentType;
 256                         if (contentType != null)
 257                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign ("ContentType", contentType), location));
 258
 259                         string culture = pageParser.Culture;
 260                         if (culture != null)
 261                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign ("Culture", culture), location));
 262
 263                         culture = pageParser.UICulture;
 264                         if (culture != null)
 265                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign ("UICulture", culture), location));
 266
 267                         string errorPage = pageParser.ErrorPage;
 268                         if (errorPage != null)
 269                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign ("ErrorPage", errorPage), location));
 270
 271                         if (pageParser.HaveTrace) {
 272                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 273                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceEnabled");
 274                                 stmt.Right = new CodePrimitiveExpression (pageParser.Trace);
 275                                 method.Statements.Add (AddLinePragma (stmt, location));
 276                         }
 277
 278                         if (pageParser.TraceMode != TraceMode.Default) {
 279                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 280                                 CodeTypeReferenceExpression tm = new CodeTypeReferenceExpression ("System.Web.TraceMode");
 281                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceModeValue");
 282                                 stmt.Right = new CodeFieldReferenceExpression (tm, pageParser.TraceMode.ToString ());
 283                                 method.Statements.Add (AddLinePragma (stmt, location));
 284                         }
 285
 286                         if (pageParser.NotBuffer) {
 287                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 288                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "Buffer");
 289                                 stmt.Right = new CodePrimitiveExpression (false);
 290                                 method.Statements.Add (AddLinePragma (stmt, location));
 291                         }
 292
 293                         if (!pageParser.EnableEventValidation) {
 294                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 295                                 CodePropertyReferenceExpression prop;
 296                                 prop = new CodePropertyReferenceExpression (thisRef, "EnableEventValidation");
 297                                 stmt.Left = prop;
 298                                 stmt.Right = new CodePrimitiveExpression (pageParser.EnableEventValidation);
 299                                 method.Statements.Add (AddLinePragma (stmt, location));
 300                         }
 301
 302                         if (pageParser.MaintainScrollPositionOnPostBack) {
 303                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 304                                 CodePropertyReferenceExpression prop;
 305                                 prop = new CodePropertyReferenceExpression (thisRef, "MaintainScrollPositionOnPostBack");
 306                                 stmt.Left = prop;
 307                                 stmt.Right = new CodePrimitiveExpression (pageParser.MaintainScrollPositionOnPostBack);
 308                                 method.Statements.Add (AddLinePragma (stmt, location));
 309                         }
 310                 }
 311
 312                 protected override void AddStatementsToConstructor (CodeConstructor ctor)
 313                 {
 314                         base.AddStatementsToConstructor (ctor);
 315                         if (pageParser.OutputCache)
 316                                 OutputCacheParamsBlock (ctor);
 317                 }
 318
 319                 protected override void AddStatementsToInitMethodTop (ControlBuilder builder, CodeMemberMethod method)
 320                 {
 321                         ILocation directiveLocation = pageParser.DirectiveLocation;
 322                         AddStatementsFromDirective (builder, method, directiveLocation);
 323
 324                         CodeArgumentReferenceExpression ctrlVar = new CodeArgumentReferenceExpression("__ctrl");
 325                         if (pageParser.EnableViewStateMacSet)
 326                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "EnableViewStateMac", pageParser.EnableViewStateMacSet), directiveLocation));
 327
 328                         AssignPropertyWithExpression <string> (method, "Title", pageParser.Title, directiveLocation);
 329                         AssignPropertyWithExpression <string> (method, "MasterPageFile", pageParser.MasterPageFile, directiveLocation);
 330                         AssignPropertyWithExpression <string> (method, "Theme", pageParser.Theme, directiveLocation);
 331
 332                         if (pageParser.StyleSheetTheme != null)
 333                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "StyleSheetTheme", pageParser.StyleSheetTheme), directiveLocation));
 334
 335                         if (pageParser.Async != false)
 336                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "AsyncMode", pageParser.Async), directiveLocation));
 337
 338                         if (pageParser.AsyncTimeout != -1)
 339                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "AsyncTimeout",
 340                                                                                             TimeSpan.FromSeconds (pageParser.AsyncTimeout)), directiveLocation));
 341
 342                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (thisRef, "InitializeCulture");
 343                         method.Statements.Add (AddLinePragma (new CodeExpressionStatement (expr), directiveLocation));
 344                 }
 345 #if NET_4_0
 346                 protected override void AddStatementsToInitMethodBottom (ControlBuilder builder, CodeMemberMethod method)
 347                 {
 348                         ILocation directiveLocation = pageParser.DirectiveLocation;
 349                         AssignPropertyWithExpression <string> (method, "MetaDescription", pageParser.MetaDescription, directiveLocation);
 350                         AssignPropertyWithExpression <string> (method, "MetaKeywords", pageParser.MetaKeywords, directiveLocation);
 351                 }
 352 #endif
 353                 protected override void PrependStatementsToFrameworkInitialize (CodeMemberMethod method)
 354                 {
 355                         base.PrependStatementsToFrameworkInitialize (method);
 356                         if (pageParser.StyleSheetTheme != null)
 357                                 method.Statements.Add (CreatePropertyAssign ("StyleSheetTheme", pageParser.StyleSheetTheme));
 358                 }
 359
 360                 protected override void AppendStatementsToFrameworkInitialize (CodeMemberMethod method)
 361                 {
 362                         base.AppendStatementsToFrameworkInitialize (method);
 363
 364                         ArrayList deps = pageParser.Dependencies;
 365                         int depsCount = deps != null ? deps.Count : 0;
 366
 367                         if (depsCount > 0) {
 368                                 CodeFieldReferenceExpression fileDependencies = GetMainClassFieldReferenceExpression ("__fileDependencies");
 369
 370                                 method.Statements.Add (
 371                                         new CodeMethodInvokeExpression (
 372                                                 thisRef,
 373                                                 "AddWrappedFileDependencies",
 374                                                 new CodeExpression[] {fileDependencies})
 375                                 );
 376
 377                         }
 378
 379                         if (pageParser.OutputCache) {
 380                                 CodeMethodReferenceExpression init = new CodeMethodReferenceExpression (thisRef, "InitOutputCache");
 381                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (init, GetMainClassFieldReferenceExpression ("__outputCacheSettings"));
 382                                 method.Statements.Add (invoke);
 383                         }
 384
 385                         if (pageParser.ValidateRequest) {
 386                                 CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression ();
 387                                 CodePropertyReferenceExpression prop;
 388                                 prop = new CodePropertyReferenceExpression (thisRef, "Request");
 389                                 expr.Method = new CodeMethodReferenceExpression (prop, "ValidateInput");
 390                                 method.Statements.Add (expr);
 391                         }
 392                 }
 393
 394                 CodeAssignStatement AssignOutputCacheParameter (CodeVariableReferenceExpression variable, string propName, object value)
 395                 {
 396                         var ret = new CodeAssignStatement ();
 397
 398                         ret.Left = new CodeFieldReferenceExpression (variable, propName);
 399
 400                         if (value is OutputCacheLocation)
 401                                 ret.Right = new CodeFieldReferenceExpression (
 402                                         new CodeTypeReferenceExpression (new CodeTypeReference (typeof (OutputCacheLocation), CodeTypeReferenceOptions.GlobalReference)),
 403                                         value.ToString ()
 404                                 );
 405                         else
 406                                 ret.Right = new CodePrimitiveExpression (value);
 407                         return ret;
 408                 }
 409
 410                 void OutputCacheParamsBlock (CodeMemberMethod method)
 411                 {
 412                         var statements = new List <CodeStatement> ();
 413                         var localSettingsDecl = new CodeVariableDeclarationStatement (typeof (OutputCacheParameters), "outputCacheSettings");
 414                         var localSettings = new CodeVariableReferenceExpression ("outputCacheSettings");
 415
 416                         statements.Add (localSettingsDecl);
 417                         statements.Add (
 418                                 new CodeAssignStatement (
 419                                         localSettings,
 420                                         new CodeObjectCreateExpression (typeof (OutputCacheParameters), new CodeExpression[] {})
 421                                 )
 422                         );
 423
 424                         TemplateParser.OutputCacheParsedParams parsed = pageParser.OutputCacheParsedParameters;
 425                         if ((parsed & TemplateParser.OutputCacheParsedParams.CacheProfile) != 0)
 426                                 statements.Add (AssignOutputCacheParameter (localSettings, "CacheProfile", pageParser.OutputCacheCacheProfile));
 427                         statements.Add (AssignOutputCacheParameter (localSettings, "Duration", pageParser.OutputCacheDuration));
 428                         if ((parsed & TemplateParser.OutputCacheParsedParams.Location) != 0)
 429                                 statements.Add (AssignOutputCacheParameter (localSettings, "Location", pageParser.OutputCacheLocation));
 430                         if ((parsed & TemplateParser.OutputCacheParsedParams.NoStore) != 0)
 431                                 statements.Add (AssignOutputCacheParameter (localSettings, "NoStore", pageParser.OutputCacheNoStore));
 432                         if ((parsed & TemplateParser.OutputCacheParsedParams.SqlDependency) != 0)
 433                                 statements.Add (AssignOutputCacheParameter (localSettings, "SqlDependency", pageParser.OutputCacheSqlDependency));
 434                         if ((parsed & TemplateParser.OutputCacheParsedParams.VaryByContentEncodings) != 0)
 435                                 statements.Add (AssignOutputCacheParameter (localSettings, "VaryByContentEncoding", pageParser.OutputCacheVaryByContentEncodings));
 436                         if ((parsed & TemplateParser.OutputCacheParsedParams.VaryByControl) != 0)
 437                                 statements.Add (AssignOutputCacheParameter (localSettings, "VaryByControl", pageParser.OutputCacheVaryByControls));
 438                         if ((parsed & TemplateParser.OutputCacheParsedParams.VaryByCustom) != 0)
 439                                 statements.Add (AssignOutputCacheParameter (localSettings, "VaryByCustom", pageParser.OutputCacheVaryByCustom));
 440                         if ((parsed & TemplateParser.OutputCacheParsedParams.VaryByHeader) != 0)
 441                                 statements.Add (AssignOutputCacheParameter (localSettings, "VaryByHeader", pageParser.OutputCacheVaryByHeader));
 442                         statements.Add (AssignOutputCacheParameter (localSettings, "VaryByParam", pageParser.OutputCacheVaryByParam));
 443
 444                         CodeFieldReferenceExpression outputCacheSettings = GetMainClassFieldReferenceExpression ("__outputCacheSettings");
 445                         statements.Add (new CodeAssignStatement (outputCacheSettings, localSettings));
 446
 447                         var cond = new CodeConditionStatement (
 448                                 new CodeBinaryOperatorExpression (
 449                                         outputCacheSettings,
 450                                         CodeBinaryOperatorType.IdentityEquality,
 451                                         new CodePrimitiveExpression (null)
 452                                 ),
 453                                 statements.ToArray ()
 454                         );
 455
 456                         method.Statements.Add (cond);
 457                 }
 458
 459                 void CreateStronglyTypedProperty (Type type, string name)
 460                 {
 461                         if (type == null)
 462                                 return;
 463
 464                         CodeMemberProperty mprop = new CodeMemberProperty ();
 465                         mprop.Name = name;
 466                         mprop.Type = new CodeTypeReference (type);
 467                         mprop.Attributes = MemberAttributes.Public | MemberAttributes.New;
 468                         CodeExpression prop = new CodePropertyReferenceExpression (new CodeBaseReferenceExpression (), name);
 469                         prop = new CodeCastExpression (type, prop);
 470                         mprop.GetStatements.Add (new CodeMethodReturnStatement (prop));
 471                         if (partialClass != null)
 472                                 partialClass.Members.Add (mprop);
 473                         else
 474                                 mainClass.Members.Add (mprop);
 475
 476                         AddReferencedAssembly (type.Assembly);
 477                 }
 478
 479                 protected internal override void CreateMethods ()
 480                 {
 481                         base.CreateMethods ();
 482
 483                         CreateProfileProperty ();
 484                         CreateStronglyTypedProperty (pageParser.MasterType, "Master");
 485                         CreateStronglyTypedProperty (pageParser.PreviousPageType, "PreviousPage");
 486                         CreateGetTypeHashCode ();
 487
 488                         if (pageParser.Async)
 489                                 CreateAsyncMethods ();
 490                 }
 491
 492                 void CreateAsyncMethods ()
 493                 {
 494                         CodeMemberMethod method = new CodeMemberMethod ();
 495                         CodeParameterDeclarationExpression arg;
 496                         CodeMethodInvokeExpression invoke;
 497
 498                         // public virtual System.IAsyncResult BeginProcessRequest(System.Web.HttpContext context, System.AsyncCallback cb, object data);
 499                         method.ReturnType = new CodeTypeReference (typeof (IAsyncResult));
 500                         method.Name = "BeginProcessRequest";
 501                         method.Attributes = MemberAttributes.Public;
 502
 503                         arg = new CodeParameterDeclarationExpression ();
 504                         arg.Type = new CodeTypeReference (typeof (HttpContext));
 505                         arg.Name = "context";
 506                         method.Parameters.Add (arg);
 507
 508                         arg = new CodeParameterDeclarationExpression ();
 509                         arg.Type = new CodeTypeReference (typeof (AsyncCallback));
 510                         arg.Name = "cb";
 511                         method.Parameters.Add (arg);
 512
 513                         arg = new CodeParameterDeclarationExpression ();
 514                         arg.Type = new CodeTypeReference (typeof (object));
 515                         arg.Name = "data";
 516                         method.Parameters.Add (arg);
 517
 518                         invoke = new CodeMethodInvokeExpression (thisRef, "AsyncPageBeginProcessRequest");
 519                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("context"));
 520                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("cb"));
 521                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("data"));
 522
 523                         method.Statements.Add (new CodeMethodReturnStatement (invoke));
 524                         mainClass.Members.Add (method);
 525
 526                         // public virtual void EndProcessRequest(System.IAsyncResult ar);
 527                         method = new CodeMemberMethod ();
 528                         method.ReturnType = new CodeTypeReference (typeof (void));
 529                         method.Name = "EndProcessRequest";
 530                         method.Attributes = MemberAttributes.Public;
 531
 532                         arg = new CodeParameterDeclarationExpression ();
 533                         arg.Type = new CodeTypeReference (typeof (IAsyncResult));
 534                         arg.Name = "ar";
 535                         method.Parameters.Add (arg);
 536
 537                         invoke = new CodeMethodInvokeExpression (thisRef, "AsyncPageEndProcessRequest");
 538                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("ar"));
 539
 540                         method.Statements.Add (invoke);
 541                         mainClass.Members.Add (method);
 542
 543                         // public override void ProcessRequest(System.Web.HttpContext context);
 544                         method = new CodeMemberMethod ();
 545                         method.ReturnType = new CodeTypeReference (typeof (void));
 546                         method.Name = "ProcessRequest";
 547                         method.Attributes = MemberAttributes.Public | MemberAttributes.Override;
 548
 549                         arg = new CodeParameterDeclarationExpression ();
 550                         arg.Type = new CodeTypeReference (typeof (HttpContext));
 551                         arg.Name = "context";
 552                         method.Parameters.Add (arg);
 553
 554                         invoke = new CodeMethodInvokeExpression (new CodeBaseReferenceExpression (), "ProcessRequest");
 555                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("context"));
 556
 557                         method.Statements.Add (invoke);
 558                         mainClass.Members.Add (method);
 559                 }
 560
 561                 public static Type CompilePageType (PageParser pageParser)
 562                 {
 563                         PageCompiler compiler = new PageCompiler (pageParser);
 564                         return compiler.GetCompiledType ();
 565                 }
 566         }
 567 }