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.IO;
  34 using System.Reflection;
  35 using System.Text;
  36 using System.Web.Configuration;
  37 using System.Web.UI;
  38 using System.Web.SessionState;
  39 using System.Web.Util;
  40 #if NET_2_0
  41 using System.Web.Profile;
  42 #endif
  43
  44 namespace System.Web.Compilation
  45 {
  46         class PageCompiler : TemplateControlCompiler
  47         {
  48                 PageParser pageParser;
  49                 static CodeTypeReference intRef = new CodeTypeReference (typeof (int));
  50
  51                 public PageCompiler (PageParser pageParser)
  52                         : base (pageParser)
  53                 {
  54                         this.pageParser = pageParser;
  55                 }
  56
  57                 protected override void CreateStaticFields ()
  58                 {
  59                         base.CreateStaticFields ();
  60
  61                         CodeMemberField fld = new CodeMemberField (
  62 #if NET_2_0
  63                                 typeof (object),
  64 #else
  65                                 typeof (ArrayList),
  66 #endif
  67                                 "__fileDependencies");
  68                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
  69                         fld.InitExpression = new CodePrimitiveExpression (null);
  70                         mainClass.Members.Add (fld);
  71                 }
  72
  73                 protected override void CreateConstructor (CodeStatementCollection localVars,
  74                                                            CodeStatementCollection trueStmt)
  75                 {
  76                         if (pageParser.ClientTarget != null) {
  77                                 CodeExpression prop;
  78                                 prop = new CodePropertyReferenceExpression (thisRef, "ClientTarget");
  79                                 CodeExpression ct = new CodePrimitiveExpression (pageParser.ClientTarget);
  80                                 if (localVars == null)
  81                                         localVars = new CodeStatementCollection ();
  82                                 localVars.Add (new CodeAssignStatement (prop, ct));
  83                         }
  84
  85                         ArrayList deps = pageParser.Dependencies;
  86                         int depsCount = deps != null ? deps.Count : 0;
  87
  88                         if (depsCount > 0) {
  89                                 if (localVars == null)
  90                                         localVars = new CodeStatementCollection ();
  91                                 if (trueStmt == null)
  92                                         trueStmt = new CodeStatementCollection ();
  93
  94                                 CodeAssignStatement assign;
  95 #if NET_2_0
  96                                 localVars.Add (
  97                                         new CodeVariableDeclarationStatement (
  98                                                 typeof (string[]),
  99                                                 "dependencies")
 100                                 );
 101
 102                                 CodeVariableReferenceExpression dependencies = new CodeVariableReferenceExpression ("dependencies");
 103                                 trueStmt.Add (
 104                                         new CodeAssignStatement (dependencies, new CodeArrayCreateExpression (typeof (string), depsCount))
 105                                 );
 106
 107                                 CodeArrayIndexerExpression arrayIndex;
 108                                 object o;
 109
 110                                 for (int i = 0; i < depsCount; i++) {
 111                                         o = deps [i];
 112                                         arrayIndex = new CodeArrayIndexerExpression (dependencies, new CodeExpression[] {new CodePrimitiveExpression (i)});
 113                                         assign = new CodeAssignStatement (arrayIndex, new CodePrimitiveExpression (o));
 114                                         trueStmt.Add (assign);
 115                                 }
 116
 117                                 CodeMethodInvokeExpression getDepsCall = new CodeMethodInvokeExpression (
 118                                         thisRef,
 119                                         "GetWrappedFileDependencies",
 120                                         new CodeExpression[] {dependencies}
 121                                 );
 122                                 assign = new CodeAssignStatement (GetMainClassFieldReferenceExpression ("__fileDependencies"), getDepsCall);
 123 #else
 124                                 localVars.Add (new CodeVariableDeclarationStatement (
 125                                                 typeof (ArrayList),
 126                                                 "dependencies")
 127                                 );
 128
 129                                 CodeVariableReferenceExpression dependencies = new CodeVariableReferenceExpression ("dependencies");
 130                                 trueStmt.Add (
 131                                         new CodeAssignStatement (dependencies, new CodeObjectCreateExpression (typeof (ArrayList), new CodeExpression[] {new CodePrimitiveExpression (depsCount)}))
 132                                 );
 133
 134                                 CodeMethodInvokeExpression invoke;
 135                                 for (int i = 0; i < depsCount; i++) {
 136                                         invoke = new CodeMethodInvokeExpression (dependencies, "Add", new CodeExpression[] {new CodePrimitiveExpression (deps [i])});
 137                                         trueStmt.Add (invoke);
 138                                 }
 139                                 assign = new CodeAssignStatement (GetMainClassFieldReferenceExpression ("__fileDependencies"), dependencies);
 140 #endif
 141
 142                                 trueStmt.Add (assign);
 143                         }
 144
 145                         base.CreateConstructor (localVars, trueStmt);
 146                 }
 147
 148                 protected override void AddInterfaces ()
 149                 {
 150                         base.AddInterfaces ();
 151                         CodeTypeReference cref;
 152
 153                         if (pageParser.EnableSessionState) {
 154                                 cref = new CodeTypeReference (typeof (IRequiresSessionState));
 155 #if NET_2_0
 156                                 if (partialClass != null)
 157                                         partialClass.BaseTypes.Add (cref);
 158                                 else
 159 #endif
 160                                         mainClass.BaseTypes.Add (cref);
 161                         }
 162
 163                         if (pageParser.ReadOnlySessionState) {
 164                                 cref = new CodeTypeReference (typeof (IReadOnlySessionState));
 165 #if NET_2_0
 166                                 if (partialClass != null)
 167                                         partialClass.BaseTypes.Add (cref);
 168                                 else
 169 #endif
 170                                         mainClass.BaseTypes.Add (cref);
 171                         }
 172
 173 #if NET_2_0
 174                         if (pageParser.Async)
 175                                 mainClass.BaseTypes.Add (new CodeTypeReference (typeof (System.Web.IHttpAsyncHandler)));
 176
 177                         mainClass.BaseTypes.Add (new CodeTypeReference (typeof (System.Web.IHttpHandler)));
 178 #endif
 179                 }
 180
 181                 void CreateGetTypeHashCode ()
 182                 {
 183                         CodeMemberMethod method = new CodeMemberMethod ();
 184                         method.ReturnType = intRef;
 185                         method.Name = "GetTypeHashCode";
 186                         method.Attributes = MemberAttributes.Public | MemberAttributes.Override;
 187                         Random rnd = new Random (pageParser.InputFile.GetHashCode ());
 188                         method.Statements.Add (new CodeMethodReturnStatement (new CodePrimitiveExpression (rnd.Next ())));
 189                         mainClass.Members.Add (method);
 190                 }
 191
 192                 static CodeAssignStatement CreatePropertyAssign (CodeExpression expr, string name, object value)
 193                 {
 194                         CodePropertyReferenceExpression prop;
 195                         prop = new CodePropertyReferenceExpression (expr, name);
 196                         CodePrimitiveExpression prim;
 197                         prim = new CodePrimitiveExpression (value);
 198                         return new CodeAssignStatement (prop, prim);
 199                 }
 200
 201                 static CodeAssignStatement CreatePropertyAssign (string name, object value)
 202                 {
 203                         return CreatePropertyAssign (thisRef, name, value);
 204                 }
 205
 206                 void AddStatementsFromDirective (CodeMemberMethod method)
 207                 {
 208                         string responseEncoding = pageParser.ResponseEncoding;
 209                         if (responseEncoding != null)
 210                                 method.Statements.Add (CreatePropertyAssign ("ResponseEncoding", responseEncoding));
 211
 212                         int codepage = pageParser.CodePage;
 213                         if (codepage != -1)
 214                                 method.Statements.Add (CreatePropertyAssign ("CodePage", codepage));
 215
 216                         string contentType = pageParser.ContentType;
 217                         if (contentType != null)
 218                                 method.Statements.Add (CreatePropertyAssign ("ContentType", contentType));
 219
 220                         if (pageParser.OutputCache) {
 221                                 CodeMethodReferenceExpression init = new CodeMethodReferenceExpression (null,
 222                                                 "InitOutputCache");
 223                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (init,
 224                                                 OutputCacheParams ());
 225                                 method.Statements.Add (invoke);
 226                         }
 227
 228                         int lcid = pageParser.LCID;
 229                         if (lcid != -1)
 230                                 method.Statements.Add (CreatePropertyAssign ("LCID", lcid));
 231
 232                         string culture = pageParser.Culture;
 233                         if (culture != null)
 234                                 method.Statements.Add (CreatePropertyAssign ("Culture", culture));
 235
 236                         culture = pageParser.UICulture;
 237                         if (culture != null)
 238                                 method.Statements.Add (CreatePropertyAssign ("UICulture", culture));
 239
 240                         string errorPage = pageParser.ErrorPage;
 241                         if (errorPage != null)
 242                                 method.Statements.Add (CreatePropertyAssign ("ErrorPage", errorPage));
 243
 244                         if (pageParser.HaveTrace) {
 245                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 246                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceEnabled");
 247                                 stmt.Right = new CodePrimitiveExpression (pageParser.Trace);
 248                                 method.Statements.Add (stmt);
 249                         }
 250
 251                         if (pageParser.TraceMode != TraceMode.Default) {
 252                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 253                                 CodeTypeReferenceExpression tm = new CodeTypeReferenceExpression ("System.Web.TraceMode");
 254                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceModeValue");
 255                                 stmt.Right = new CodeFieldReferenceExpression (tm, pageParser.TraceMode.ToString ());
 256                                 method.Statements.Add (stmt);
 257                         }
 258
 259                         if (pageParser.NotBuffer) {
 260                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 261                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "Buffer");
 262                                 stmt.Right = new CodePrimitiveExpression (false);
 263                                 method.Statements.Add (stmt);
 264                         }
 265
 266 #if NET_2_0
 267                         if (!pageParser.EnableEventValidation) {
 268                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 269                                 CodePropertyReferenceExpression prop;
 270                                 prop = new CodePropertyReferenceExpression (thisRef, "EnableEventValidation");
 271                                 stmt.Left = prop;
 272                                 stmt.Right = new CodePrimitiveExpression (pageParser.EnableEventValidation);
 273                                 method.Statements.Add (stmt);
 274                         }
 275
 276                         if (pageParser.MaintainScrollPositionOnPostBack) {
 277                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 278                                 CodePropertyReferenceExpression prop;
 279                                 prop = new CodePropertyReferenceExpression (thisRef, "MaintainScrollPositionOnPostBack");
 280                                 stmt.Left = prop;
 281                                 stmt.Right = new CodePrimitiveExpression (pageParser.MaintainScrollPositionOnPostBack);
 282                                 method.Statements.Add (stmt);
 283                         }
 284 #endif
 285                 }
 286
 287                 protected override void AddStatementsToInitMethod (CodeMemberMethod method)
 288                 {
 289 #if NET_2_0
 290                         AddStatementsFromDirective (method);
 291                         ILocation directiveLocation = pageParser.DirectiveLocation;
 292
 293                         CodeArgumentReferenceExpression ctrlVar = new CodeArgumentReferenceExpression("__ctrl");
 294                         if (pageParser.Title != null)
 295                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "Title", pageParser.Title), directiveLocation));
 296
 297                         if (pageParser.MasterPageFile != null)
 298                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "MasterPageFile", pageParser.MasterPageFile), directiveLocation));
 299
 300                         if (pageParser.Theme != null)
 301                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "Theme", pageParser.Theme), directiveLocation));
 302
 303                         if (pageParser.StyleSheetTheme != null)
 304                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "StyleSheetTheme", pageParser.StyleSheetTheme), directiveLocation));
 305
 306                         if (pageParser.Async != false)
 307                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "AsyncMode", pageParser.Async), directiveLocation));
 308
 309                         if (pageParser.AsyncTimeout != -1)
 310                                 method.Statements.Add (AddLinePragma (CreatePropertyAssign (ctrlVar, "AsyncTimeout",
 311                                                                                             TimeSpan.FromSeconds (pageParser.AsyncTimeout)), directiveLocation));
 312
 313                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (thisRef, "InitializeCulture");
 314                         method.Statements.Add (AddLinePragma (new CodeExpressionStatement (expr), directiveLocation));
 315 #endif
 316                 }
 317
 318                 protected override void PrependStatementsToFrameworkInitialize (CodeMemberMethod method)
 319                 {
 320                         base.PrependStatementsToFrameworkInitialize (method);
 321 #if NET_2_0
 322                         if (pageParser.StyleSheetTheme != null)
 323                                 method.Statements.Add (CreatePropertyAssign ("StyleSheetTheme", pageParser.StyleSheetTheme));
 324 #endif
 325                 }
 326
 327
 328                 protected override void AppendStatementsToFrameworkInitialize (CodeMemberMethod method)
 329                 {
 330                         base.AppendStatementsToFrameworkInitialize (method);
 331
 332                         ArrayList deps = pageParser.Dependencies;
 333                         int depsCount = deps != null ? deps.Count : 0;
 334
 335                         if (depsCount > 0) {
 336                                 CodeFieldReferenceExpression fileDependencies = GetMainClassFieldReferenceExpression ("__fileDependencies");
 337
 338                                 method.Statements.Add (
 339 #if NET_2_0
 340                                         new CodeMethodInvokeExpression (
 341                                                 thisRef,
 342                                                 "AddWrappedFileDependencies",
 343                                                 new CodeExpression[] {fileDependencies})
 344 #else
 345                                         new CodeAssignStatement (
 346                                                 new CodeFieldReferenceExpression (thisRef, "FileDependencies"),
 347                                                 fileDependencies
 348                                         )
 349 #endif
 350                                 );
 351
 352                         }
 353
 354 #if ONLY_1_1
 355                         AddStatementsFromDirective (method);
 356 #endif
 357
 358 #if NET_1_1
 359                         if (pageParser.ValidateRequest) {
 360                                 CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression ();
 361                                 CodePropertyReferenceExpression prop;
 362                                 prop = new CodePropertyReferenceExpression (thisRef, "Request");
 363                                 expr.Method = new CodeMethodReferenceExpression (prop, "ValidateInput");
 364                                 method.Statements.Add (expr);
 365                         }
 366 #endif
 367                 }
 368
 369                 CodeExpression[] OutputCacheParams ()
 370                 {
 371                         return new CodeExpression [] {
 372                                 new CodePrimitiveExpression (pageParser.OutputCacheDuration),
 373 #if NET_2_0
 374                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByContentEncodings),
 375 #endif
 376                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByHeader),
 377                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByCustom),
 378                                 new CodeSnippetExpression (typeof (OutputCacheLocation).ToString () +
 379                                                 "." + pageParser.OutputCacheLocation.ToString ()),
 380                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByParam)
 381                                 };
 382                 }
 383
 384 #if NET_2_0
 385                 void CreateStronglyTypedProperty (Type type, string name)
 386                 {
 387                         if (type == null)
 388                                 return;
 389
 390                         CodeMemberProperty mprop = new CodeMemberProperty ();
 391                         mprop.Name = name;
 392                         mprop.Type = new CodeTypeReference (type);
 393                         mprop.Attributes = MemberAttributes.Public | MemberAttributes.New;
 394                         CodeExpression prop = new CodePropertyReferenceExpression (new CodeBaseReferenceExpression (), name);
 395                         prop = new CodeCastExpression (type, prop);
 396                         mprop.GetStatements.Add (new CodeMethodReturnStatement (prop));
 397                         if (partialClass != null)
 398                                 partialClass.Members.Add (mprop);
 399                         else
 400                                 mainClass.Members.Add (mprop);
 401                 }
 402 #endif
 403
 404                 protected internal override void CreateMethods ()
 405                 {
 406                         base.CreateMethods ();
 407
 408 #if NET_2_0
 409                         CreateProfileProperty ();
 410                         CreateStronglyTypedProperty (pageParser.MasterType, "Master");
 411                         CreateStronglyTypedProperty (pageParser.PreviousPageType, "PreviousPage");
 412 #endif
 413
 414                         CreateGetTypeHashCode ();
 415
 416 #if NET_2_0
 417                         if (pageParser.Async)
 418                                 CreateAsyncMethods ();
 419 #endif
 420                 }
 421
 422 #if NET_2_0
 423                 void CreateAsyncMethods ()
 424                 {
 425                         CodeMemberMethod method = new CodeMemberMethod ();
 426                         CodeParameterDeclarationExpression arg;
 427                         CodeMethodInvokeExpression invoke;
 428
 429                         // public virtual System.IAsyncResult BeginProcessRequest(System.Web.HttpContext context, System.AsyncCallback cb, object data);
 430                         method.ReturnType = new CodeTypeReference (typeof (IAsyncResult));
 431                         method.Name = "BeginProcessRequest";
 432                         method.Attributes = MemberAttributes.Public;
 433
 434                         arg = new CodeParameterDeclarationExpression ();
 435                         arg.Type = new CodeTypeReference (typeof (HttpContext));
 436                         arg.Name = "context";
 437                         method.Parameters.Add (arg);
 438
 439                         arg = new CodeParameterDeclarationExpression ();
 440                         arg.Type = new CodeTypeReference (typeof (AsyncCallback));
 441                         arg.Name = "cb";
 442                         method.Parameters.Add (arg);
 443
 444                         arg = new CodeParameterDeclarationExpression ();
 445                         arg.Type = new CodeTypeReference (typeof (object));
 446                         arg.Name = "data";
 447                         method.Parameters.Add (arg);
 448
 449                         invoke = new CodeMethodInvokeExpression (thisRef, "AsyncPageBeginProcessRequest");
 450                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("context"));
 451                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("cb"));
 452                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("data"));
 453
 454                         method.Statements.Add (new CodeMethodReturnStatement (invoke));
 455                         mainClass.Members.Add (method);
 456
 457                         // public virtual void EndProcessRequest(System.IAsyncResult ar);
 458                         method = new CodeMemberMethod ();
 459                         method.ReturnType = new CodeTypeReference (typeof (void));
 460                         method.Name = "EndProcessRequest";
 461                         method.Attributes = MemberAttributes.Public;
 462
 463                         arg = new CodeParameterDeclarationExpression ();
 464                         arg.Type = new CodeTypeReference (typeof (IAsyncResult));
 465                         arg.Name = "ar";
 466                         method.Parameters.Add (arg);
 467
 468                         invoke = new CodeMethodInvokeExpression (thisRef, "AsyncPageEndProcessRequest");
 469                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("ar"));
 470
 471                         method.Statements.Add (invoke);
 472                         mainClass.Members.Add (method);
 473
 474                         // public override void ProcessRequest(System.Web.HttpContext context);
 475                         method = new CodeMemberMethod ();
 476                         method.ReturnType = new CodeTypeReference (typeof (void));
 477                         method.Name = "ProcessRequest";
 478                         method.Attributes = MemberAttributes.Public | MemberAttributes.Override;
 479
 480                         arg = new CodeParameterDeclarationExpression ();
 481                         arg.Type = new CodeTypeReference (typeof (HttpContext));
 482                         arg.Name = "context";
 483                         method.Parameters.Add (arg);
 484
 485                         invoke = new CodeMethodInvokeExpression (new CodeBaseReferenceExpression (), "ProcessRequest");
 486                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("context"));
 487
 488                         method.Statements.Add (invoke);
 489                         mainClass.Members.Add (method);
 490                 }
 491 #endif
 492
 493                 public static Type CompilePageType (PageParser pageParser)
 494                 {
 495                         PageCompiler compiler = new PageCompiler (pageParser);
 496                         return compiler.GetCompiledType ();
 497                 }
 498         }
 499 }
 500
 501