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