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

   1 //
   2 // System.Web.Compilation.TemplateControlCompiler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //      Marek Habersack (mhabersack@novell.com)
   7 //
   8 // (C) 2003 Ximian, Inc (http://www.ximian.com)
   9 // (C) 2004-2008 Novell, Inc (http://novell.com)
  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 using System;
  32 using System.CodeDom;
  33 using System.Collections;
  34 using System.ComponentModel;
  35 using System.Configuration;
  36 using System.Collections.Specialized;
  37 using System.Collections.Generic;
  38 using System.Drawing;
  39 using System.Globalization;
  40 using System.Reflection;
  41 using System.Resources;
  42 using System.Text;
  43 using System.Web;
  44 using System.Web.Configuration;
  45 using System.Web.UI;
  46 using System.Web.UI.WebControls;
  47 using System.Web.Util;
  48 using System.ComponentModel.Design.Serialization;
  49 using System.Text.RegularExpressions;
  50
  51 namespace System.Web.Compilation
  52 {
  53         class TemplateControlCompiler : BaseCompiler
  54         {
  55                 static BindingFlags noCaseFlags = BindingFlags.Public | BindingFlags.NonPublic |
  56                                                   BindingFlags.Instance | BindingFlags.IgnoreCase;
  57                 static Type monoTypeType = Type.GetType ("System.MonoType");
  58
  59                 TemplateControlParser parser;
  60                 int dataBoundAtts;
  61                 internal ILocation currentLocation;
  62
  63                 static TypeConverter colorConverter;
  64
  65                 internal static CodeVariableReferenceExpression ctrlVar = new CodeVariableReferenceExpression ("__ctrl");
  66
  67                 List <string> masterPageContentPlaceHolders;
  68                 static Regex startsWithBindRegex = new Regex (@"^Bind\s*\(", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  69                 // When modifying those, make sure to look at the SanitizeBindCall to make sure it
  70                 // picks up correct groups.
  71                 static Regex bindRegex = new Regex (@"Bind\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)\s*%>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  72                 static Regex bindRegexInValue = new Regex (@"Bind\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)\s*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  73                 static Regex evalRegexInValue = new Regex (@"(.*)Eval\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)(.*)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  74
  75                 List <string> MasterPageContentPlaceHolders {
  76                         get {
  77                                 if (masterPageContentPlaceHolders == null)
  78                                         masterPageContentPlaceHolders = new List <string> ();
  79                                 return masterPageContentPlaceHolders;
  80                         }
  81                 }
  82
  83                 public TemplateControlCompiler (TemplateControlParser parser)
  84                         : base (parser)
  85                 {
  86                         this.parser = parser;
  87                 }
  88
  89                 protected void EnsureID (ControlBuilder builder)
  90                 {
  91                         if (builder.ID == null || builder.ID.Trim () == "")
  92                                 builder.ID = builder.GetNextID (null);
  93                 }
  94
  95                 void CreateField (ControlBuilder builder, bool check)
  96                 {
  97                         if (builder == null || builder.ID == null || builder.ControlType == null)
  98                                 return;
  99
 100                         if (partialNameOverride [builder.ID] != null)
 101                                 return;
 102
 103                         MemberAttributes ma = MemberAttributes.Family;
 104                         currentLocation = builder.Location;
 105                         if (check && CheckBaseFieldOrProperty (builder.ID, builder.ControlType, ref ma))
 106                                 return; // The field or property already exists in a base class and is accesible.
 107
 108                         CodeMemberField field;
 109                         field = new CodeMemberField (builder.ControlType.FullName, builder.ID);
 110                         field.Attributes = ma;
 111                         field.Type.Options |= CodeTypeReferenceOptions.GlobalReference;
 112
 113                         if (partialClass != null)
 114                                 partialClass.Members.Add (AddLinePragma (field, builder));
 115                         else
 116                                 mainClass.Members.Add (AddLinePragma (field, builder));
 117                 }
 118
 119                 bool CheckBaseFieldOrProperty (string id, Type type, ref MemberAttributes ma)
 120                 {
 121                         FieldInfo fld = parser.BaseType.GetField (id, noCaseFlags);
 122
 123                         Type other = null;
 124                         if (fld == null || fld.IsPrivate) {
 125                                 PropertyInfo prop = parser.BaseType.GetProperty (id, noCaseFlags);
 126                                 if (prop != null) {
 127                                         MethodInfo setm = prop.GetSetMethod (true);
 128                                         if (setm != null)
 129                                                 other = prop.PropertyType;
 130                                 }
 131                         } else {
 132                                 other = fld.FieldType;
 133                         }
 134
 135                         if (other == null)
 136                                 return false;
 137
 138                         if (!other.IsAssignableFrom (type)) {
 139                                 ma |= MemberAttributes.New;
 140                                 return false;
 141                         }
 142
 143                         return true;
 144                 }
 145
 146                 void AddParsedSubObjectStmt (ControlBuilder builder, CodeExpression expr)
 147                 {
 148                         if (!builder.HaveParserVariable) {
 149                                 CodeVariableDeclarationStatement p = new CodeVariableDeclarationStatement();
 150                                 p.Name = "__parser";
 151                                 p.Type = new CodeTypeReference (typeof (IParserAccessor));
 152                                 p.InitExpression = new CodeCastExpression (typeof (IParserAccessor), ctrlVar);
 153                                 builder.MethodStatements.Add (p);
 154                                 builder.HaveParserVariable = true;
 155                         }
 156
 157                         CodeVariableReferenceExpression var = new CodeVariableReferenceExpression ("__parser");
 158                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (var, "AddParsedSubObject");
 159                         invoke.Parameters.Add (expr);
 160                         builder.MethodStatements.Add (AddLinePragma (invoke, builder));
 161                 }
 162
 163                 void InitMethod (ControlBuilder builder, bool isTemplate, bool childrenAsProperties)
 164                 {
 165                         currentLocation = builder.Location;
 166
 167                         string tailname = ((builder is RootBuilder) ? "Tree" : ("_" + builder.ID));
 168                         CodeMemberMethod method = new CodeMemberMethod ();
 169                         builder.Method = method;
 170                         builder.MethodStatements = method.Statements;
 171
 172                         method.Name = "__BuildControl" + tailname;
 173                         method.Attributes = MemberAttributes.Private | MemberAttributes.Final;
 174                         Type type = builder.ControlType;
 175
 176                         /* in the case this is the __BuildControlTree
 177                          * method, allow subclasses to insert control
 178                          * specific code. */
 179                         if (builder is RootBuilder) {
 180                                 SetCustomAttributes (method);
 181                                 AddStatementsToInitMethod (method);
 182                         }
 183
 184                         if (builder.HasAspCode) {
 185                                 CodeMemberMethod renderMethod = new CodeMemberMethod ();
 186                                 builder.RenderMethod = renderMethod;
 187                                 renderMethod.Name = "__Render" + tailname;
 188                                 renderMethod.Attributes = MemberAttributes.Private | MemberAttributes.Final;
 189                                 CodeParameterDeclarationExpression arg1 = new CodeParameterDeclarationExpression ();
 190                                 arg1.Type = new CodeTypeReference (typeof (HtmlTextWriter));
 191                                 arg1.Name = "__output";
 192                                 CodeParameterDeclarationExpression arg2 = new CodeParameterDeclarationExpression ();
 193                                 arg2.Type = new CodeTypeReference (typeof (Control));
 194                                 arg2.Name = "parameterContainer";
 195                                 renderMethod.Parameters.Add (arg1);
 196                                 renderMethod.Parameters.Add (arg2);
 197                                 mainClass.Members.Add (renderMethod);
 198                         }
 199
 200                         if (childrenAsProperties || builder.ControlType == null) {
 201                                 string typeString;
 202                                 if (builder is RootBuilder)
 203                                         typeString = parser.ClassName;
 204                                 else {
 205                                         if (builder.ControlType != null && builder.IsProperty &&
 206                                             !typeof (ITemplate).IsAssignableFrom (builder.ControlType))
 207                                                 typeString = builder.ControlType.FullName;
 208                                         else
 209                                                 typeString = "System.Web.UI.Control";
 210                                         ProcessTemplateChildren (builder);
 211                                 }
 212
 213                                 method.Parameters.Add (new CodeParameterDeclarationExpression (typeString, "__ctrl"));
 214                         } else {
 215
 216                                 if (typeof (Control).IsAssignableFrom (type))
 217                                         method.ReturnType = new CodeTypeReference (typeof (Control));
 218
 219                                 // _ctrl = new $controlType ($parameters);
 220                                 //
 221                                 CodeObjectCreateExpression newExpr = new CodeObjectCreateExpression (type);
 222
 223                                 object [] atts = type.GetCustomAttributes (typeof (ConstructorNeedsTagAttribute), true);
 224                                 if (atts != null && atts.Length > 0) {
 225                                         ConstructorNeedsTagAttribute att = (ConstructorNeedsTagAttribute) atts [0];
 226                                         if (att.NeedsTag)
 227                                                 newExpr.Parameters.Add (new CodePrimitiveExpression (builder.TagName));
 228                                 } else if (builder is DataBindingBuilder) {
 229                                         newExpr.Parameters.Add (new CodePrimitiveExpression (0));
 230                                         newExpr.Parameters.Add (new CodePrimitiveExpression (1));
 231                                 }
 232
 233                                 method.Statements.Add (new CodeVariableDeclarationStatement (builder.ControlType, "__ctrl"));
 234                                 CodeAssignStatement assign = new CodeAssignStatement ();
 235                                 assign.Left = ctrlVar;
 236                                 assign.Right = newExpr;
 237                                 method.Statements.Add (AddLinePragma (assign, builder));
 238
 239                                 // this.$builderID = _ctrl;
 240                                 //
 241                                 CodeFieldReferenceExpression builderID = new CodeFieldReferenceExpression ();
 242                                 builderID.TargetObject = thisRef;
 243                                 builderID.FieldName = builder.ID;
 244                                 assign = new CodeAssignStatement ();
 245                                 assign.Left = builderID;
 246                                 assign.Right = ctrlVar;
 247                                 method.Statements.Add (AddLinePragma (assign, builder));
 248
 249                                 if (typeof (UserControl).IsAssignableFrom (type)) {
 250                                         CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression ();
 251                                         mref.TargetObject = builderID;
 252                                         mref.MethodName = "InitializeAsUserControl";
 253                                         CodeMethodInvokeExpression initAsControl = new CodeMethodInvokeExpression (mref);
 254                                         initAsControl.Parameters.Add (new CodePropertyReferenceExpression (thisRef, "Page"));
 255                                         method.Statements.Add (initAsControl);
 256                                 }
 257
 258                                 if (builder.ParentTemplateBuilder is System.Web.UI.WebControls.ContentBuilderInternal) {
 259                                         PropertyInfo pi;
 260
 261                                         try {
 262                                                 pi = type.GetProperty ("TemplateControl");
 263                                         } catch (Exception) {
 264                                                 pi = null;
 265                                         }
 266
 267                                         if (pi != null && pi.CanWrite) {
 268                                                 // __ctrl.TemplateControl = this;
 269                                                 assign = new CodeAssignStatement ();
 270                                                 assign.Left = new CodePropertyReferenceExpression (ctrlVar, "TemplateControl");;
 271                                                 assign.Right = thisRef;
 272                                                 method.Statements.Add (assign);
 273                                         }
 274                                 }
 275
 276                                 // _ctrl.SkinID = $value
 277                                 // _ctrl.ApplyStyleSheetSkin (this);
 278                                 //
 279                                 // the SkinID assignment needs to come
 280                                 // before the call to
 281                                 // ApplyStyleSheetSkin, for obvious
 282                                 // reasons.  We skip SkinID in
 283                                 // CreateAssignStatementsFromAttributes
 284                                 // below.
 285                                 //
 286                                 string skinid = builder.GetAttribute ("skinid");
 287                                 if (!String.IsNullOrEmpty (skinid))
 288                                         CreateAssignStatementFromAttribute (builder, "skinid");
 289
 290                                 if (typeof (WebControl).IsAssignableFrom (type)) {
 291                                         CodeMethodInvokeExpression applyStyleSheetSkin = new CodeMethodInvokeExpression (ctrlVar, "ApplyStyleSheetSkin");
 292                                         if (typeof (Page).IsAssignableFrom (parser.BaseType))
 293                                                 applyStyleSheetSkin.Parameters.Add (thisRef);
 294                                         else
 295                                                 applyStyleSheetSkin.Parameters.Add (new CodePropertyReferenceExpression (thisRef, "Page"));
 296                                         method.Statements.Add (applyStyleSheetSkin);
 297                                 }
 298
 299                                 // Process template children before anything else
 300                                 ProcessTemplateChildren (builder);
 301
 302                                 // process ID here. It should be set before any other attributes are
 303                                 // assigned, since the control code may rely on ID being set. We
 304                                 // skip ID in CreateAssignStatementsFromAttributes
 305                                 string ctl_id = builder.GetAttribute ("id");
 306                                 if (ctl_id != null && ctl_id.Length != 0)
 307                                         CreateAssignStatementFromAttribute (builder, "id");
 308
 309                                 if (typeof (ContentPlaceHolder).IsAssignableFrom (type)) {
 310                                         List <string> placeHolderIds = MasterPageContentPlaceHolders;
 311                                         string cphID = builder.ID;
 312
 313                                         if (!placeHolderIds.Contains (cphID))
 314                                                 placeHolderIds.Add (cphID);
 315
 316                                         CodeConditionStatement condStatement;
 317
 318                                         // Add the __Template_* field
 319                                         string templateField = "__Template_" + cphID;
 320                                         CodeMemberField fld = new CodeMemberField (typeof (ITemplate), templateField);
 321                                         fld.Attributes = MemberAttributes.Private;
 322                                         mainClass.Members.Add (fld);
 323
 324                                         CodeFieldReferenceExpression templateID = new CodeFieldReferenceExpression ();
 325                                         templateID.TargetObject = thisRef;
 326                                         templateID.FieldName = templateField;
 327
 328                                         CreateContentPlaceHolderTemplateProperty (templateField, "Template_" + cphID);
 329
 330                                         // if ((this.ContentTemplates != null)) {
 331                                         //      this.__Template_$builder.ID = ((System.Web.UI.ITemplate)(this.ContentTemplates["$builder.ID"]));
 332                                         // }
 333                                         //
 334                                         CodeFieldReferenceExpression contentTemplates = new CodeFieldReferenceExpression ();
 335                                         contentTemplates.TargetObject = thisRef;
 336                                         contentTemplates.FieldName = "ContentTemplates";
 337
 338                                         CodeIndexerExpression indexer = new CodeIndexerExpression ();
 339                                         indexer.TargetObject = new CodePropertyReferenceExpression (thisRef, "ContentTemplates");
 340                                         indexer.Indices.Add (new CodePrimitiveExpression (cphID));
 341
 342                                         assign = new CodeAssignStatement ();
 343                                         assign.Left = templateID;
 344                                         assign.Right = new CodeCastExpression (new CodeTypeReference (typeof (ITemplate)), indexer);
 345
 346                                         condStatement = new CodeConditionStatement (new CodeBinaryOperatorExpression (contentTemplates,
 347                                                                                                                       CodeBinaryOperatorType.IdentityInequality,
 348                                                                                                                       new CodePrimitiveExpression (null)),
 349                                                                                     assign);
 350
 351                                         method.Statements.Add (condStatement);
 352
 353                                         // if ((this.__Template_mainContent != null)) {
 354                                         //      this.__Template_mainContent.InstantiateIn(__ctrl);
 355                                         // }
 356                                         // and also set things up such that any additional code ends up in:
 357                                         // else {
 358                                         //      ...
 359                                         // }
 360                                         //
 361                                         CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression ();
 362                                         methodRef.TargetObject = templateID;
 363                                         methodRef.MethodName = "InstantiateIn";
 364
 365                                         CodeMethodInvokeExpression instantiateInInvoke;
 366                                         instantiateInInvoke = new CodeMethodInvokeExpression (methodRef, ctrlVar);
 367
 368                                         condStatement = new CodeConditionStatement (new CodeBinaryOperatorExpression (templateID,
 369                                                                                                                       CodeBinaryOperatorType.IdentityInequality,
 370                                                                                                                       new CodePrimitiveExpression (null)),
 371                                                                                     new CodeExpressionStatement (instantiateInInvoke));
 372                                         method.Statements.Add (condStatement);
 373
 374                                         // this is the bit that causes the following stuff to end up in the else { }
 375                                         builder.MethodStatements = condStatement.FalseStatements;
 376                                 }
 377                         }
 378
 379                         mainClass.Members.Add (method);
 380                 }
 381
 382                 void ProcessTemplateChildren (ControlBuilder builder)
 383                 {
 384                         ArrayList templates = builder.TemplateChildren;
 385                         if (templates != null && templates.Count > 0) {
 386                                 foreach (TemplateBuilder tb in templates) {
 387                                         CreateControlTree (tb, true, false);
 388                                         if (tb.BindingDirection == BindingDirection.TwoWay) {
 389                                                 string extractMethod = CreateExtractValuesMethod (tb);
 390                                                 AddBindableTemplateInvocation (builder, tb.TagName, tb.Method.Name, extractMethod);
 391                                         } else
 392                                                 AddTemplateInvocation (builder, tb.TagName, tb.Method.Name);
 393                                 }
 394                         }
 395                 }
 396
 397                 void SetCustomAttribute (CodeMemberMethod method, UnknownAttributeDescriptor uad)
 398                 {
 399                         CodeAssignStatement assign = new CodeAssignStatement ();
 400                         assign.Left = new CodePropertyReferenceExpression (
 401                                 new CodeArgumentReferenceExpression("__ctrl"),
 402                                 uad.Info.Name);
 403                         assign.Right = GetExpressionFromString (uad.Value.GetType (), uad.Value.ToString (), uad.Info);
 404
 405                         method.Statements.Add (assign);
 406                 }
 407
 408                 void SetCustomAttributes (CodeMemberMethod method)
 409                 {
 410                         Type baseType = parser.BaseType;
 411                         if (baseType == null)
 412                                 return;
 413
 414                         List <UnknownAttributeDescriptor> attrs = parser.UnknownMainAttributes;
 415                         if (attrs == null || attrs.Count == 0)
 416                                 return;
 417
 418                         foreach (UnknownAttributeDescriptor uad in attrs)
 419                                 SetCustomAttribute (method, uad);
 420                 }
 421
 422                 protected virtual void AddStatementsToInitMethod (CodeMemberMethod method)
 423                 {
 424                 }
 425
 426                 void AddLiteralSubObject (ControlBuilder builder, string str)
 427                 {
 428                         if (!builder.HasAspCode) {
 429                                 CodeObjectCreateExpression expr;
 430                                 expr = new CodeObjectCreateExpression (typeof (LiteralControl), new CodePrimitiveExpression (str));
 431                                 AddParsedSubObjectStmt (builder, expr);
 432                         } else {
 433                                 CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression ();
 434                                 methodRef.TargetObject = new CodeArgumentReferenceExpression ("__output");
 435                                 methodRef.MethodName = "Write";
 436
 437                                 CodeMethodInvokeExpression expr;
 438                                 expr = new CodeMethodInvokeExpression (methodRef, new CodePrimitiveExpression (str));
 439                                 builder.RenderMethod.Statements.Add (expr);
 440                         }
 441                 }
 442
 443                 string TrimDB (string value, bool trimTail)
 444                 {
 445                         string str = value.Trim ();
 446                         int len = str.Length;
 447                         int idx = str.IndexOf ('#', 2) + 1;
 448                         if (idx >= len)
 449                                 return String.Empty;
 450                         if (trimTail)
 451                                 len -= 2;
 452
 453                         return str.Substring (idx, len - idx).Trim ();
 454                 }
 455
 456                 CodeExpression CreateEvalInvokeExpression (Regex regex, string value, bool isBind)
 457                 {
 458                         Match match = regex.Match (value);
 459                         if (!match.Success) {
 460                                 if (isBind)
 461                                         throw new HttpParseException ("Bind invocation wasn't formatted properly.");
 462                                 return null;
 463                         }
 464
 465                         string sanitizedSnippet;
 466                         if (isBind)
 467                                 sanitizedSnippet = SanitizeBindCall (match);
 468                         else
 469                                 sanitizedSnippet = value;
 470
 471                         return new CodeSnippetExpression (sanitizedSnippet);
 472                 }
 473
 474                 string SanitizeBindCall (Match match)
 475                 {
 476                         GroupCollection groups = match.Groups;
 477                         StringBuilder sb = new StringBuilder ("Eval(\"" + groups [1] + "\"");
 478                         Group second = groups [4];
 479                         if (second != null) {
 480                                 string v = second.Value;
 481                                 if (v != null && v.Length > 0)
 482                                         sb.Append (",\"" + second + "\"");
 483                         }
 484
 485                         sb.Append (")");
 486                         return sb.ToString ();
 487                 }
 488
 489                 string DataBoundProperty (ControlBuilder builder, Type type, string varName, string value)
 490                 {
 491                         value = TrimDB (value, true);
 492                         CodeMemberMethod method;
 493                         string dbMethodName = builder.Method.Name + "_DB_" + dataBoundAtts++;
 494                         CodeExpression valueExpression = null;
 495                         value = value.Trim ();
 496
 497                         bool need_if = false;
 498                         if (startsWithBindRegex.Match (value).Success) {
 499                                 valueExpression = CreateEvalInvokeExpression (bindRegexInValue, value, true);
 500                                 if (valueExpression != null)
 501                                         need_if = true;
 502                         } else
 503                                 if (StrUtils.StartsWith (value, "Eval", true))
 504                                         valueExpression = CreateEvalInvokeExpression (evalRegexInValue, value, false);
 505
 506                         if (valueExpression == null)
 507                                 valueExpression = new CodeSnippetExpression (value);
 508
 509                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), builder.ControlType);
 510                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
 511
 512                         // This should be a CodePropertyReferenceExpression for properties... but it works anyway
 513                         CodeFieldReferenceExpression field = new CodeFieldReferenceExpression (targetExpr, varName);
 514
 515                         CodeExpression expr;
 516                         if (type == typeof (string)) {
 517                                 CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
 518                                 CodeTypeReferenceExpression conv = new CodeTypeReferenceExpression (typeof (Convert));
 519                                 tostring.Method = new CodeMethodReferenceExpression (conv, "ToString");
 520                                 tostring.Parameters.Add (valueExpression);
 521                                 expr = tostring;
 522                         } else
 523                                 expr = new CodeCastExpression (type, valueExpression);
 524
 525                         CodeAssignStatement assign = new CodeAssignStatement (field, expr);
 526                         if (need_if) {
 527                                 CodeExpression page = new CodePropertyReferenceExpression (thisRef, "Page");
 528                                 CodeExpression left = new CodeMethodInvokeExpression (page, "GetDataItem");
 529                                 CodeBinaryOperatorExpression ce = new CodeBinaryOperatorExpression (left, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression (null));
 530                                 CodeConditionStatement ccs = new CodeConditionStatement (ce, assign);
 531                                 method.Statements.Add (ccs);
 532                         } else
 533                                 method.Statements.Add (assign);
 534
 535                         mainClass.Members.Add (method);
 536                         return method.Name;
 537                 }
 538
 539                 void AddCodeForPropertyOrField (ControlBuilder builder, Type type, string var_name, string att, MemberInfo member, bool isDataBound, bool isExpression)
 540                 {
 541                         CodeMemberMethod method = builder.Method;
 542                         bool isWritable = IsWritablePropertyOrField (member);
 543
 544                         if (isDataBound && isWritable) {
 545                                 string dbMethodName = DataBoundProperty (builder, type, var_name, att);
 546                                 AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
 547                                 return;
 548                         } else if (isExpression && isWritable) {
 549                                 AddExpressionAssign (method, builder, member, type, var_name, att);
 550                                 return;
 551                         }
 552
 553                         CodeAssignStatement assign = new CodeAssignStatement ();
 554                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, var_name);
 555                         currentLocation = builder.Location;
 556                         assign.Right = GetExpressionFromString (type, att, member);
 557
 558                         method.Statements.Add (AddLinePragma (assign, builder));
 559                 }
 560
 561                 bool IsDirective (string value, char directiveChar)
 562                 {
 563                         if (value == null || value == String.Empty)
 564                                 return false;
 565
 566                         value = value.Trim ();
 567                         if (!StrUtils.StartsWith (value, "<%") || !StrUtils.EndsWith (value, "%>"))
 568                                 return false;
 569
 570                         int dcIndex = value.IndexOf (directiveChar, 2);
 571                         if (dcIndex == -1)
 572                                 return false;
 573
 574                         if (dcIndex == 2)
 575                                 return true;
 576                         dcIndex--;
 577
 578                         while (dcIndex >= 2) {
 579                                 if (!Char.IsWhiteSpace (value [dcIndex]))
 580                                         return false;
 581                                 dcIndex--;
 582                         }
 583
 584                         return true;
 585                 }
 586
 587                 bool IsDataBound (string value)
 588                 {
 589                         return IsDirective (value, '#');
 590                 }
 591
 592                 bool IsExpression (string value)
 593                 {
 594                         return IsDirective (value, '$');
 595                 }
 596
 597                 void RegisterBindingInfo (ControlBuilder builder, string propName, ref string value)
 598                 {
 599                         string str = TrimDB (value, false);
 600                         if (StrUtils.StartsWith (str, "Bind", true)) {
 601                                 Match match = bindRegex.Match (str);
 602                                 if (match.Success) {
 603                                         string bindingName = match.Groups [1].Value;
 604                                         TemplateBuilder templateBuilder = builder.ParentTemplateBuilder;
 605
 606                                         if (templateBuilder == null)
 607                                                 throw new HttpException ("Bind expression not allowed in this context.");
 608
 609                                         if (templateBuilder.BindingDirection == BindingDirection.OneWay)
 610                                                 return;
 611
 612                                         string id = builder.GetAttribute ("ID");
 613                                         if (String.IsNullOrEmpty (id))
 614                                                 throw new HttpException ("Control of type '" + builder.ControlType + "' using two-way binding on property '" + propName + "' must have an ID.");
 615
 616                                         templateBuilder.RegisterBoundProperty (builder.ControlType, propName, id, bindingName);
 617                                 }
 618                         }
 619                 }
 620
 621                 /*
 622                 static bool InvariantCompare (string a, string b)
 623                 {
 624                         return (0 == String.Compare (a, b, false, Helpers.InvariantCulture));
 625                 }
 626                 */
 627
 628                 static bool InvariantCompareNoCase (string a, string b)
 629                 {
 630                         return (0 == String.Compare (a, b, true, Helpers.InvariantCulture));
 631                 }
 632
 633                 static MemberInfo GetFieldOrProperty (Type type, string name)
 634                 {
 635                         MemberInfo member = null;
 636                         try {
 637                                 member = type.GetProperty (name, noCaseFlags & ~BindingFlags.NonPublic);
 638                         } catch {}
 639
 640                         if (member != null)
 641                                 return member;
 642
 643                         try {
 644                                 member = type.GetField (name, noCaseFlags & ~BindingFlags.NonPublic);
 645                         } catch {}
 646
 647                         return member;
 648                 }
 649
 650                 static bool IsWritablePropertyOrField (MemberInfo member)
 651                 {
 652                         PropertyInfo pi = member as PropertyInfo;
 653                         if (pi != null)
 654                                 return pi.GetSetMethod (false) != null;
 655                         FieldInfo fi = member as FieldInfo;
 656                         if (fi != null)
 657                                 return !fi.IsInitOnly;
 658                         throw new ArgumentException ("Argument must be of PropertyInfo or FieldInfo type", "member");
 659                 }
 660
 661                 bool ProcessPropertiesAndFields (ControlBuilder builder, MemberInfo member, string id,
 662                                                  string attValue, string prefix)
 663                 {
 664                         int hyphen = id.IndexOf ('-');
 665                         bool isPropertyInfo = (member is PropertyInfo);
 666                         bool isDataBound = IsDataBound (attValue);
 667                         bool isExpression = !isDataBound && IsExpression (attValue);
 668                         Type type;
 669                         if (isPropertyInfo) {
 670                                 type = ((PropertyInfo) member).PropertyType;
 671                         } else {
 672                                 type = ((FieldInfo) member).FieldType;
 673                         }
 674
 675                         if (InvariantCompareNoCase (member.Name, id)) {
 676                                 if (isDataBound)
 677                                         RegisterBindingInfo (builder, member.Name, ref attValue);
 678
 679                                 if (!IsWritablePropertyOrField (member))
 680                                         return false;
 681
 682                                 AddCodeForPropertyOrField (builder, type, member.Name, attValue, member, isDataBound, isExpression);
 683                                 return true;
 684                         }
 685
 686                         if (hyphen == -1)
 687                                 return false;
 688
 689                         string prop_field = id.Replace ('-', '.');
 690                         string [] parts = prop_field.Split (new char [] {'.'});
 691                         int length = parts.Length;
 692
 693                         if (length < 2 || !InvariantCompareNoCase (member.Name, parts [0]))
 694                                 return false;
 695
 696                         if (length > 2) {
 697                                 MemberInfo sub_member = GetFieldOrProperty (type, parts [1]);
 698                                 if (sub_member == null)
 699                                         return false;
 700
 701                                 string new_prefix = prefix + member.Name + ".";
 702                                 string new_id = id.Substring (hyphen + 1);
 703                                 return ProcessPropertiesAndFields (builder, sub_member, new_id, attValue, new_prefix);
 704                         }
 705
 706                         MemberInfo subpf = GetFieldOrProperty (type, parts [1]);
 707                         if (!(subpf is PropertyInfo))
 708                                 return false;
 709
 710                         PropertyInfo subprop = (PropertyInfo) subpf;
 711                         if (subprop.CanWrite == false)
 712                                 return false;
 713
 714                         bool is_bool = (subprop.PropertyType == typeof (bool));
 715                         if (!is_bool && attValue == null)
 716                                 return false; // Font-Size -> Font-Size="" as html
 717
 718                         string val = attValue;
 719                         if (attValue == null && is_bool)
 720                                 val = "true"; // Font-Bold <=> Font-Bold="true"
 721
 722                         if (isDataBound)
 723                                 RegisterBindingInfo (builder, prefix + member.Name + "." + subprop.Name, ref attValue);
 724
 725                         AddCodeForPropertyOrField (builder, subprop.PropertyType,
 726                                                    prefix + member.Name + "." + subprop.Name,
 727                                                    val, subprop, isDataBound, isExpression);
 728
 729                         return true;
 730                 }
 731
 732                 CodeExpression CompileExpression (MemberInfo member, Type type, string value, bool useSetAttribute)
 733                 {
 734                         // First let's find the correct expression builder
 735                         value = value.Substring (3, value.Length - 5).Trim ();
 736                         int colon = value.IndexOf (':');
 737                         if (colon == -1)
 738                                 return null;
 739                         string prefix = value.Substring (0, colon).Trim ();
 740                         string expr = value.Substring (colon + 1).Trim ();
 741
 742                         CompilationSection cs = (CompilationSection)WebConfigurationManager.GetWebApplicationSection ("system.web/compilation");
 743                         if (cs == null)
 744                                 return null;
 745
 746                         if (cs.ExpressionBuilders == null || cs.ExpressionBuilders.Count == 0)
 747                                 return null;
 748
 749                         System.Web.Configuration.ExpressionBuilder ceb = cs.ExpressionBuilders[prefix];
 750                         if (ceb == null)
 751                                 return null;
 752
 753                         string builderType = ceb.Type;
 754                         Type t;
 755
 756                         try {
 757                                 t = HttpApplication.LoadType (builderType, true);
 758                         } catch (Exception e) {
 759                                 throw new HttpException (String.Format ("Failed to load expression builder type `{0}'", builderType), e);
 760                         }
 761
 762                         if (!typeof (System.Web.Compilation.ExpressionBuilder).IsAssignableFrom (t))
 763                                 throw new HttpException (String.Format ("Type {0} is not descendant from System.Web.Compilation.ExpressionBuilder", builderType));
 764
 765                         System.Web.Compilation.ExpressionBuilder eb = null;
 766                         object parsedData;
 767                         ExpressionBuilderContext ctx;
 768
 769                         try {
 770                                 eb = Activator.CreateInstance (t) as System.Web.Compilation.ExpressionBuilder;
 771                                 ctx = new ExpressionBuilderContext (HttpContext.Current.Request.FilePath);
 772                                 parsedData = eb.ParseExpression (expr, type, ctx);
 773                         } catch (Exception e) {
 774                                 throw new HttpException (String.Format ("Failed to create an instance of type `{0}'", builderType), e);
 775                         }
 776
 777                         BoundPropertyEntry bpe = CreateBoundPropertyEntry (member as PropertyInfo, prefix, expr, useSetAttribute);
 778                         return eb.GetCodeExpression (bpe, parsedData, ctx);
 779                 }
 780
 781                 void AddExpressionAssign (CodeMemberMethod method, ControlBuilder builder, MemberInfo member, Type type, string name, string value)
 782                 {
 783                         CodeExpression expr = CompileExpression (member, type, value, false);
 784
 785                         if (expr == null)
 786                                 return;
 787
 788                         CodeAssignStatement assign = new CodeAssignStatement ();
 789                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, name);
 790                         assign.Right = expr;
 791
 792                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
 793                 }
 794
 795                 BoundPropertyEntry CreateBoundPropertyEntry (PropertyInfo pi, string prefix, string expr, bool useSetAttribute)
 796                 {
 797                         BoundPropertyEntry ret = new BoundPropertyEntry ();
 798                         ret.Expression = expr;
 799                         ret.ExpressionPrefix = prefix;
 800                         ret.Generated = false;
 801                         if (pi != null) {
 802                                 ret.Name = pi.Name;
 803                                 ret.PropertyInfo = pi;
 804                                 ret.Type = pi.PropertyType;
 805                         }
 806                         ret.UseSetAttribute = useSetAttribute;
 807
 808                         return ret;
 809                 }
 810
 811                 bool ResourceProviderHasObject (string key)
 812                 {
 813                         IResourceProvider rp = HttpContext.GetResourceProvider (InputVirtualPath.Absolute, true);
 814                         if (rp == null)
 815                                 return false;
 816
 817                         IResourceReader rr = rp.ResourceReader;
 818                         if (rr == null)
 819                                 return false;
 820
 821                         try {
 822                                 IDictionaryEnumerator ide = rr.GetEnumerator ();
 823                                 if (ide == null)
 824                                         return false;
 825
 826                                 string dictKey;
 827                                 while (ide.MoveNext ()) {
 828                                         dictKey = ide.Key as string;
 829                                         if (String.IsNullOrEmpty (dictKey))
 830                                                 continue;
 831                                         if (String.Compare (key, dictKey, StringComparison.Ordinal) == 0)
 832                                                 return true;
 833                                 }
 834                         } finally {
 835                                 rr.Close ();
 836                         }
 837
 838                         return false;
 839                 }
 840
 841                 void AssignPropertyFromResources (ControlBuilder builder, MemberInfo mi, string attvalue)
 842                 {
 843                         bool isProperty = mi.MemberType == MemberTypes.Property;
 844                         bool isField = !isProperty && (mi.MemberType == MemberTypes.Field);
 845
 846                         if (!isProperty && !isField || !IsWritablePropertyOrField (mi))
 847                                 return;
 848
 849                         object[] attrs = mi.GetCustomAttributes (typeof (LocalizableAttribute), true);
 850                         if (attrs != null && attrs.Length > 0 && !((LocalizableAttribute)attrs [0]).IsLocalizable)
 851                                 return;
 852
 853                         string memberName = mi.Name;
 854                         string resname = String.Concat (attvalue, ".", memberName);
 855
 856                         if (!ResourceProviderHasObject (resname))
 857                                 return;
 858
 859                         // __ctrl.Text = System.Convert.ToString(HttpContext.GetLocalResourceObject("ButtonResource1.Text"));
 860                         string inputFile = parser.InputFile;
 861                         string physPath = HttpContext.Current.Request.PhysicalApplicationPath;
 862
 863                         if (StrUtils.StartsWith (inputFile, physPath))
 864                                 inputFile = parser.InputFile.Substring (physPath.Length - 1);
 865                         else
 866                                 return;
 867
 868                         char dsc = System.IO.Path.DirectorySeparatorChar;
 869                         if (dsc != '/')
 870                                 inputFile = inputFile.Replace (dsc, '/');
 871
 872                         object obj = HttpContext.GetLocalResourceObject (inputFile, resname);
 873                         if (obj == null)
 874                                 return;
 875
 876                         if (!isProperty && !isField)
 877                                 return; // an "impossible" case
 878
 879                         CodeAssignStatement assign = new CodeAssignStatement ();
 880
 881                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, memberName);
 882                         assign.Right = ResourceExpressionBuilder.CreateGetLocalResourceObject (mi, resname);
 883
 884                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
 885                 }
 886
 887                 void AssignPropertiesFromResources (ControlBuilder builder, Type controlType, string attvalue)
 888                 {
 889                         // Process all public fields and properties of the control. We don't use GetMembers to make the code
 890                         // faster
 891                         FieldInfo [] fields = controlType.GetFields (
 892                                 BindingFlags.Instance | BindingFlags.Static |
 893                                 BindingFlags.Public | BindingFlags.FlattenHierarchy);
 894                         PropertyInfo [] properties = controlType.GetProperties (
 895                                 BindingFlags.Instance | BindingFlags.Static |
 896                                 BindingFlags.Public | BindingFlags.FlattenHierarchy);
 897
 898                         foreach (FieldInfo fi in fields)
 899                                 AssignPropertyFromResources (builder, fi, attvalue);
 900                         foreach (PropertyInfo pi in properties)
 901                                 AssignPropertyFromResources (builder, pi, attvalue);
 902                 }
 903
 904                 void AssignPropertiesFromResources (ControlBuilder builder, string attvalue)
 905                 {
 906                         if (attvalue == null || attvalue.Length == 0)
 907                                 return;
 908
 909                         Type controlType = builder.ControlType;
 910                         if (controlType == null)
 911                                 return;
 912
 913                         AssignPropertiesFromResources (builder, controlType, attvalue);
 914                 }
 915
 916                 void AddEventAssign (CodeMemberMethod method, ControlBuilder builder, string name, Type type, string value)
 917                 {
 918                         //"__ctrl.{0} += new {1} (this.{2});"
 919                         CodeEventReferenceExpression evtID = new CodeEventReferenceExpression (ctrlVar, name);
 920
 921                         CodeDelegateCreateExpression create;
 922                         create = new CodeDelegateCreateExpression (new CodeTypeReference (type), thisRef, value);
 923
 924                         CodeAttachEventStatement attach = new CodeAttachEventStatement (evtID, create);
 925                         method.Statements.Add (attach);
 926                 }
 927
 928                 void CreateAssignStatementFromAttribute (ControlBuilder builder, string id)
 929                 {
 930                         EventInfo [] ev_info = null;
 931                         Type type = builder.ControlType;
 932
 933                         string attvalue = builder.GetAttribute (id);
 934                         if (id.Length > 2 && String.Compare (id.Substring (0, 2), "ON", true, Helpers.InvariantCulture) == 0){
 935                                 if (ev_info == null)
 936                                         ev_info = type.GetEvents ();
 937
 938                                 string id_as_event = id.Substring (2);
 939                                 foreach (EventInfo ev in ev_info){
 940                                         if (InvariantCompareNoCase (ev.Name, id_as_event)){
 941                                                 AddEventAssign (builder.Method,
 942                                                                 builder,
 943                                                                 ev.Name,
 944                                                                 ev.EventHandlerType,
 945                                                                 attvalue);
 946
 947                                                 return;
 948                                         }
 949                                 }
 950
 951                         }
 952
 953                         if (String.Compare (id, "meta:resourcekey", StringComparison.OrdinalIgnoreCase) == 0) {
 954                                 AssignPropertiesFromResources (builder, attvalue);
 955                                 return;
 956                         }
 957
 958                         int hyphen = id.IndexOf ('-');
 959                         string alt_id = id;
 960                         if (hyphen != -1)
 961                                 alt_id = id.Substring (0, hyphen);
 962
 963                         MemberInfo fop = GetFieldOrProperty (type, alt_id);
 964                         if (fop != null) {
 965                                 if (ProcessPropertiesAndFields (builder, fop, id, attvalue, null))
 966                                         return;
 967                         }
 968
 969                         if (!typeof (IAttributeAccessor).IsAssignableFrom (type))
 970                                 throw new ParseException (builder.Location, "Unrecognized attribute: " + id);
 971
 972                         CodeMemberMethod method = builder.Method;
 973                         bool isDatabound = IsDataBound (attvalue);
 974                         bool isExpression = !isDatabound && IsExpression (attvalue);
 975
 976                         if (isDatabound) {
 977                                 string value = attvalue.Substring (3, attvalue.Length - 5).Trim ();
 978                                 CodeExpression valueExpression = null;
 979                                 if (startsWithBindRegex.Match (value).Success)
 980                                         valueExpression = CreateEvalInvokeExpression (bindRegexInValue, value, true);
 981                                 else
 982                                         if (StrUtils.StartsWith (value, "Eval", true))
 983                                                 valueExpression = CreateEvalInvokeExpression (evalRegexInValue, value, false);
 984
 985                                 if (valueExpression == null && value != null && value.Trim () != String.Empty)
 986                                         valueExpression = new CodeSnippetExpression (value);
 987
 988                                 CreateDBAttributeMethod (builder, id, valueExpression);
 989                         } else {
 990                                 CodeCastExpression cast;
 991                                 CodeMethodReferenceExpression methodExpr;
 992                                 CodeMethodInvokeExpression expr;
 993
 994                                 cast = new CodeCastExpression (typeof (IAttributeAccessor), ctrlVar);
 995                                 methodExpr = new CodeMethodReferenceExpression (cast, "SetAttribute");
 996                                 expr = new CodeMethodInvokeExpression (methodExpr);
 997                                 expr.Parameters.Add (new CodePrimitiveExpression (id));
 998
 999                                 CodeExpression valueExpr = null;
1000                                 if (isExpression)
1001                                         valueExpr = CompileExpression (null, typeof (string), attvalue, true);
1002
1003                                 if (valueExpr == null)
1004                                         valueExpr = new CodePrimitiveExpression (attvalue);
1005
1006                                 expr.Parameters.Add (valueExpr);
1007                                 method.Statements.Add (AddLinePragma (expr, builder));
1008                         }
1009                 }
1010
1011                 protected void CreateAssignStatementsFromAttributes (ControlBuilder builder)
1012                 {
1013                         this.dataBoundAtts = 0;
1014                         IDictionary atts = builder.Attributes;
1015                         if (atts == null || atts.Count == 0)
1016                                 return;
1017
1018                         foreach (string id in atts.Keys) {
1019                                 if (InvariantCompareNoCase (id, "runat"))
1020                                         continue;
1021                                 // ID is assigned in BuildControltree
1022                                 if (InvariantCompareNoCase (id, "id"))
1023                                         continue;
1024
1025                                 /* we skip SkinID here as it's assigned in BuildControlTree */
1026                                 if (InvariantCompareNoCase (id, "skinid"))
1027                                         continue;
1028                                 if (InvariantCompareNoCase (id, "meta:resourcekey"))
1029                                         continue; // ignore, this one's processed at the very end of
1030                                                   // the method
1031                                 CreateAssignStatementFromAttribute (builder, id);
1032                         }
1033                 }
1034
1035                 void CreateDBAttributeMethod (ControlBuilder builder, string attr, CodeExpression code)
1036                 {
1037                         if (code == null)
1038                                 return;
1039
1040                         string id = builder.GetNextID (null);
1041                         string dbMethodName = "__DataBind_" + id;
1042                         CodeMemberMethod method = builder.Method;
1043                         AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
1044
1045                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), builder.ControlType);
1046                         builder.DataBindingMethod = method;
1047
1048                         CodeCastExpression cast;
1049                         CodeMethodReferenceExpression methodExpr;
1050                         CodeMethodInvokeExpression expr;
1051
1052                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1053                         cast = new CodeCastExpression (typeof (IAttributeAccessor), targetExpr);
1054                         methodExpr = new CodeMethodReferenceExpression (cast, "SetAttribute");
1055                         expr = new CodeMethodInvokeExpression (methodExpr);
1056                         expr.Parameters.Add (new CodePrimitiveExpression (attr));
1057                         CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
1058                         tostring.Method = new CodeMethodReferenceExpression (
1059                                                         new CodeTypeReferenceExpression (typeof (Convert)),
1060                                                         "ToString");
1061                         tostring.Parameters.Add (code);
1062                         expr.Parameters.Add (tostring);
1063                         method.Statements.Add (expr);
1064                         mainClass.Members.Add (method);
1065                 }
1066
1067                 void AddRenderControl (ControlBuilder builder)
1068                 {
1069                         CodeIndexerExpression indexer = new CodeIndexerExpression ();
1070                         indexer.TargetObject = new CodePropertyReferenceExpression (
1071                                                         new CodeArgumentReferenceExpression ("parameterContainer"),
1072                                                         "Controls");
1073
1074                         indexer.Indices.Add (new CodePrimitiveExpression (builder.RenderIndex));
1075
1076                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (indexer, "RenderControl");
1077                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("__output"));
1078                         builder.RenderMethod.Statements.Add (invoke);
1079                         builder.IncreaseRenderIndex ();
1080                 }
1081
1082                 protected void AddChildCall (ControlBuilder parent, ControlBuilder child)
1083                 {
1084                         if (parent == null || child == null)
1085                                 return;
1086
1087                         CodeMethodReferenceExpression m = new CodeMethodReferenceExpression (thisRef, child.Method.Name);
1088                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (m);
1089
1090                         object [] atts = null;
1091
1092                         if (child.ControlType != null)
1093                                 atts = child.ControlType.GetCustomAttributes (typeof (PartialCachingAttribute), true);
1094
1095                         if (atts != null && atts.Length > 0) {
1096                                 PartialCachingAttribute pca = (PartialCachingAttribute) atts [0];
1097                                 CodeTypeReferenceExpression cc = new CodeTypeReferenceExpression("System.Web.UI.StaticPartialCachingControl");
1098                                 CodeMethodInvokeExpression build = new CodeMethodInvokeExpression (cc, "BuildCachedControl");
1099                                 build.Parameters.Add (new CodeArgumentReferenceExpression("__ctrl"));
1100                                 build.Parameters.Add (new CodePrimitiveExpression (child.ID));
1101 #if NET_1_1
1102                                 if (pca.Shared)
1103                                         build.Parameters.Add (new CodePrimitiveExpression (child.ControlType.GetHashCode ().ToString ()));
1104                                 else
1105 #endif
1106                                         build.Parameters.Add (new CodePrimitiveExpression (Guid.NewGuid ().ToString ()));
1107
1108                                 build.Parameters.Add (new CodePrimitiveExpression (pca.Duration));
1109                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByParams));
1110                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByControls));
1111                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByCustom));
1112                                 build.Parameters.Add (new CodeDelegateCreateExpression (
1113                                                               new CodeTypeReference (typeof (System.Web.UI.BuildMethod)),
1114                                                               thisRef, child.Method.Name));
1115
1116                                 parent.MethodStatements.Add (AddLinePragma (build, parent));
1117                                 if (parent.HasAspCode)
1118                                         AddRenderControl (parent);
1119                                 return;
1120                         }
1121
1122                         if (child.IsProperty || parent.ChildrenAsProperties) {
1123                                 expr.Parameters.Add (new CodeFieldReferenceExpression (ctrlVar, child.TagName));
1124                                 parent.MethodStatements.Add (AddLinePragma (expr, parent));
1125                                 return;
1126                         }
1127
1128                         parent.MethodStatements.Add (AddLinePragma (expr, parent));
1129                         CodeFieldReferenceExpression field = new CodeFieldReferenceExpression (thisRef, child.ID);
1130                         if (parent.ControlType == null || typeof (IParserAccessor).IsAssignableFrom (parent.ControlType))
1131                                 AddParsedSubObjectStmt (parent, field);
1132                         else {
1133                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (ctrlVar, "Add");
1134                                 invoke.Parameters.Add (field);
1135                                 parent.MethodStatements.Add (AddLinePragma (invoke, parent));
1136                         }
1137
1138                         if (parent.HasAspCode)
1139                                 AddRenderControl (parent);
1140                 }
1141
1142                 void AddTemplateInvocation (ControlBuilder builder, string name, string methodName)
1143                 {
1144                         CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression (ctrlVar, name);
1145
1146                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1147                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1148
1149                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledTemplateBuilder));
1150                         newCompiled.Parameters.Add (newBuild);
1151
1152                         CodeAssignStatement assign = new CodeAssignStatement (prop, newCompiled);
1153                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
1154                 }
1155
1156                 void AddBindableTemplateInvocation (ControlBuilder builder, string name, string methodName, string extractMethodName)
1157                 {
1158                         CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression (ctrlVar, name);
1159
1160                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1161                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1162
1163                         CodeDelegateCreateExpression newExtract = new CodeDelegateCreateExpression (
1164                                 new CodeTypeReference (typeof (ExtractTemplateValuesMethod)), thisRef, extractMethodName);
1165
1166                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledBindableTemplateBuilder));
1167                         newCompiled.Parameters.Add (newBuild);
1168                         newCompiled.Parameters.Add (newExtract);
1169
1170                         CodeAssignStatement assign = new CodeAssignStatement (prop, newCompiled);
1171                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
1172                 }
1173
1174                 string CreateExtractValuesMethod (TemplateBuilder builder)
1175                 {
1176                         CodeMemberMethod method = new CodeMemberMethod ();
1177                         method.Name = "__ExtractValues_" + builder.ID;
1178                         method.Attributes = MemberAttributes.Private | MemberAttributes.Final;
1179                         method.ReturnType = new CodeTypeReference (typeof(IOrderedDictionary));
1180
1181                         CodeParameterDeclarationExpression arg = new CodeParameterDeclarationExpression ();
1182                         arg.Type = new CodeTypeReference (typeof (Control));
1183                         arg.Name = "__container";
1184                         method.Parameters.Add (arg);
1185                         mainClass.Members.Add (method);
1186
1187                         CodeObjectCreateExpression newTable = new CodeObjectCreateExpression ();
1188                         newTable.CreateType = new CodeTypeReference (typeof(OrderedDictionary));
1189                         method.Statements.Add (new CodeVariableDeclarationStatement (typeof(OrderedDictionary), "__table", newTable));
1190                         CodeVariableReferenceExpression tableExp = new CodeVariableReferenceExpression ("__table");
1191
1192                         if (builder.Bindings != null) {
1193                                 Hashtable hash = new Hashtable ();
1194                                 foreach (TemplateBinding binding in builder.Bindings) {
1195                                         CodeConditionStatement sif;
1196                                         CodeVariableReferenceExpression control;
1197                                         CodeAssignStatement assign;
1198
1199                                         if (hash [binding.ControlId] == null) {
1200
1201                                                 CodeVariableDeclarationStatement dec = new CodeVariableDeclarationStatement (binding.ControlType, binding.ControlId);
1202                                                 method.Statements.Add (dec);
1203                                                 CodeVariableReferenceExpression cter = new CodeVariableReferenceExpression ("__container");
1204                                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (cter, "FindControl");
1205                                                 invoke.Parameters.Add (new CodePrimitiveExpression (binding.ControlId));
1206
1207                                                 assign = new CodeAssignStatement ();
1208                                                 control = new CodeVariableReferenceExpression (binding.ControlId);
1209                                                 assign.Left = control;
1210                                                 assign.Right = new CodeCastExpression (binding.ControlType, invoke);
1211                                                 method.Statements.Add (assign);
1212
1213                                                 sif = new CodeConditionStatement ();
1214                                                 sif.Condition = new CodeBinaryOperatorExpression (control, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression (null));
1215
1216                                                 method.Statements.Add (sif);
1217
1218                                                 hash [binding.ControlId] = sif;
1219                                         }
1220
1221                                         sif = (CodeConditionStatement) hash [binding.ControlId];
1222                                         control = new CodeVariableReferenceExpression (binding.ControlId);
1223                                         assign = new CodeAssignStatement ();
1224                                         assign.Left = new CodeIndexerExpression (tableExp, new CodePrimitiveExpression (binding.FieldName));
1225                                         assign.Right = new CodePropertyReferenceExpression (control, binding.ControlProperty);
1226                                         sif.TrueStatements.Add (assign);
1227                                 }
1228                         }
1229
1230                         method.Statements.Add (new CodeMethodReturnStatement (tableExp));
1231                         return method.Name;
1232                 }
1233
1234                 void AddContentTemplateInvocation (ContentBuilderInternal cbuilder, CodeMemberMethod method, string methodName)
1235                 {
1236                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1237                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1238
1239                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledTemplateBuilder));
1240                         newCompiled.Parameters.Add (newBuild);
1241
1242                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (thisRef, "AddContentTemplate");
1243                         invoke.Parameters.Add (new CodePrimitiveExpression (cbuilder.ContentPlaceHolderID));
1244                         invoke.Parameters.Add (newCompiled);
1245
1246                         method.Statements.Add (AddLinePragma (invoke, cbuilder));
1247                 }
1248
1249                 void AddCodeRender (ControlBuilder parent, CodeRenderBuilder cr)
1250                 {
1251                         if (cr.Code == null || cr.Code.Trim () == "")
1252                                 return;
1253
1254                         if (!cr.IsAssign) {
1255                                 CodeSnippetStatement code = new CodeSnippetStatement (cr.Code);
1256                                 parent.RenderMethod.Statements.Add (AddLinePragma (code, cr));
1257                                 return;
1258                         }
1259
1260                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression ();
1261                         expr.Method = new CodeMethodReferenceExpression (
1262                                                         new CodeArgumentReferenceExpression ("__output"),
1263                                                         "Write");
1264
1265                         expr.Parameters.Add (GetWrappedCodeExpression (cr));
1266                         parent.RenderMethod.Statements.Add (AddLinePragma (expr, cr));
1267                 }
1268
1269                 CodeExpression GetWrappedCodeExpression (CodeRenderBuilder cr)
1270                 {
1271                         var ret = new CodeSnippetExpression (cr.Code);
1272 #if NET_4_0
1273                         if (cr.HtmlEncode) {
1274                                 var encodeRef = new CodeMethodReferenceExpression (new CodeTypeReferenceExpression (typeof (HttpUtility)), "HtmlEncode");
1275                                 return new CodeMethodInvokeExpression (encodeRef, new CodeExpression[] { ret });
1276                         } else
1277 #endif
1278                                 return ret;
1279                 }
1280
1281                 static Type GetContainerType (ControlBuilder builder)
1282                 {
1283                         return builder.BindingContainerType;
1284                 }
1285
1286                 CodeMemberMethod CreateDBMethod (ControlBuilder builder, string name, Type container, Type target)
1287                 {
1288                         CodeMemberMethod method = new CodeMemberMethod ();
1289                         method.Attributes = MemberAttributes.Public | MemberAttributes.Final;
1290                         method.Name = name;
1291                         method.Parameters.Add (new CodeParameterDeclarationExpression (typeof (object), "sender"));
1292                         method.Parameters.Add (new CodeParameterDeclarationExpression (typeof (EventArgs), "e"));
1293
1294                         CodeTypeReference containerRef = new CodeTypeReference (container);
1295                         CodeTypeReference targetRef = new CodeTypeReference (target);
1296
1297                         CodeVariableDeclarationStatement decl = new CodeVariableDeclarationStatement();
1298                         decl.Name = "Container";
1299                         decl.Type = containerRef;
1300                         method.Statements.Add (decl);
1301
1302                         decl = new CodeVariableDeclarationStatement();
1303                         decl.Name = "target";
1304                         decl.Type = targetRef;
1305                         method.Statements.Add (decl);
1306
1307                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1308                         CodeAssignStatement assign = new CodeAssignStatement ();
1309                         assign.Left = targetExpr;
1310                         assign.Right = new CodeCastExpression (targetRef, new CodeArgumentReferenceExpression ("sender"));
1311                         method.Statements.Add (AddLinePragma (assign, builder));
1312
1313                         assign = new CodeAssignStatement ();
1314                         assign.Left = new CodeVariableReferenceExpression ("Container");
1315                         assign.Right = new CodeCastExpression (containerRef,
1316                                                 new CodePropertyReferenceExpression (targetExpr, "BindingContainer"));
1317                         method.Statements.Add (AddLinePragma (assign, builder));
1318
1319                         return method;
1320                 }
1321
1322                 void AddDataBindingLiteral (ControlBuilder builder, DataBindingBuilder db)
1323                 {
1324                         if (db.Code == null || db.Code.Trim () == "")
1325                                 return;
1326
1327                         EnsureID (db);
1328                         CreateField (db, false);
1329
1330                         string dbMethodName = "__DataBind_" + db.ID;
1331                         // Add the method that builds the DataBoundLiteralControl
1332                         InitMethod (db, false, false);
1333                         CodeMemberMethod method = db.Method;
1334                         AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
1335                         method.Statements.Add (new CodeMethodReturnStatement (ctrlVar));
1336
1337                         // Add the DataBind handler
1338                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), typeof (DataBoundLiteralControl));
1339                         builder.DataBindingMethod = method;
1340
1341                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1342                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression ();
1343                         invoke.Method = new CodeMethodReferenceExpression (targetExpr, "SetDataBoundString");
1344                         invoke.Parameters.Add (new CodePrimitiveExpression (0));
1345
1346                         CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
1347                         tostring.Method = new CodeMethodReferenceExpression (
1348                                                         new CodeTypeReferenceExpression (typeof (Convert)),
1349                                                         "ToString");
1350                         tostring.Parameters.Add (new CodeSnippetExpression (db.Code));
1351                         invoke.Parameters.Add (tostring);
1352                         method.Statements.Add (AddLinePragma (invoke, builder));
1353
1354                         mainClass.Members.Add (method);
1355
1356                         AddChildCall (builder, db);
1357                 }
1358
1359                 void FlushText (ControlBuilder builder, StringBuilder sb)
1360                 {
1361                         if (sb.Length > 0) {
1362                                 AddLiteralSubObject (builder, sb.ToString ());
1363                                 sb.Length = 0;
1364                         }
1365                 }
1366
1367                 protected void CreateControlTree (ControlBuilder builder, bool inTemplate, bool childrenAsProperties)
1368                 {
1369                         EnsureID (builder);
1370                         bool isTemplate = (typeof (TemplateBuilder).IsAssignableFrom (builder.GetType ()));
1371
1372                         if (!isTemplate && !inTemplate) {
1373                                 CreateField (builder, true);
1374                         } else if (!isTemplate) {
1375                                 bool doCheck = false;
1376                                 bool singleInstance = false;
1377                                 ControlBuilder pb = builder.ParentBuilder;
1378                                 TemplateBuilder tpb;
1379                                 while (pb != null) {
1380                                         tpb = pb as TemplateBuilder;
1381                                         if (tpb == null) {
1382                                                 pb = pb.ParentBuilder;
1383                                                 continue;
1384                                         }
1385
1386                                         if (tpb.TemplateInstance == TemplateInstance.Single)
1387                                                 singleInstance = true;
1388                                         break;
1389                                 }
1390
1391                                 if (!singleInstance)
1392                                         builder.ID = builder.GetNextID (null);
1393                                 else
1394                                         doCheck = true;
1395
1396                                 CreateField (builder, doCheck);
1397                         }
1398
1399                         InitMethod (builder, isTemplate, childrenAsProperties);
1400                         if (!isTemplate || builder.GetType () == typeof (RootBuilder))
1401                                 CreateAssignStatementsFromAttributes (builder);
1402
1403                         if (builder.Children != null && builder.Children.Count > 0) {
1404                                 StringBuilder sb = new StringBuilder ();
1405                                 foreach (object b in builder.Children) {
1406                                         if (b is string) {
1407                                                 sb.Append ((string) b);
1408                                                 continue;
1409                                         }
1410
1411                                         FlushText (builder, sb);
1412                                         if (b is ObjectTagBuilder) {
1413                                                 ProcessObjectTag ((ObjectTagBuilder) b);
1414                                         } else if (b is StringPropertyBuilder) {
1415                                                 StringPropertyBuilder pb = b as StringPropertyBuilder;
1416                                                 if (pb.Children != null && pb.Children.Count > 0) {
1417                                                         StringBuilder asb = new StringBuilder ();
1418                                                         foreach (string s in pb.Children)
1419                                                                 asb.Append (s);
1420                                                         CodeMemberMethod method = builder.Method;
1421                                                         CodeAssignStatement assign = new CodeAssignStatement ();
1422                                                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, pb.PropertyName);
1423                                                         assign.Right = new CodePrimitiveExpression (asb.ToString ());
1424                                                         method.Statements.Add (AddLinePragma (assign, builder));
1425                                                 }
1426                                         } else if (b is ContentBuilderInternal) {
1427                                                 ContentBuilderInternal cb = (ContentBuilderInternal) b;
1428                                                 CreateControlTree (cb, false, true);
1429                                                 AddContentTemplateInvocation (cb, builder.Method, cb.Method.Name);
1430                                                 continue;
1431                                         }
1432
1433                                         // Ignore TemplateBuilders - they are processed in InitMethod
1434                                         else if (b is TemplateBuilder) {
1435                                         } else if (b is CodeRenderBuilder) {
1436                                                 AddCodeRender (builder, (CodeRenderBuilder) b);
1437                                         } else if (b is DataBindingBuilder) {
1438                                                 AddDataBindingLiteral (builder, (DataBindingBuilder) b);
1439                                         } else if (b is ControlBuilder) {
1440                                                 ControlBuilder child = (ControlBuilder) b;
1441                                                 CreateControlTree (child, inTemplate, builder.ChildrenAsProperties);
1442                                                 AddChildCall (builder, child);
1443                                                 continue;
1444                                         } else
1445                                                 throw new Exception ("???");
1446
1447                                         ControlBuilder bldr = b as ControlBuilder;
1448                                         bldr.ProcessGeneratedCode (CompileUnit, BaseType, DerivedType, bldr.Method, bldr.DataBindingMethod);
1449                                 }
1450
1451                                 FlushText (builder, sb);
1452                         }
1453
1454                         ControlBuilder defaultPropertyBuilder = builder.DefaultPropertyBuilder;
1455                         if (defaultPropertyBuilder != null) {
1456                                 CreateControlTree (defaultPropertyBuilder, false, true);
1457                                 AddChildCall (builder, defaultPropertyBuilder);
1458                         }
1459
1460                         if (builder.HasAspCode) {
1461                                 CodeMemberMethod renderMethod = builder.RenderMethod;
1462                                 CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
1463                                 m.TargetObject = thisRef;
1464                                 m.MethodName = renderMethod.Name;
1465
1466                                 CodeDelegateCreateExpression create = new CodeDelegateCreateExpression ();
1467                                 create.DelegateType = new CodeTypeReference (typeof (RenderMethod));
1468                                 create.TargetObject = thisRef;
1469                                 create.MethodName = renderMethod.Name;
1470
1471                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression ();
1472                                 invoke.Method = new CodeMethodReferenceExpression (ctrlVar, "SetRenderMethodDelegate");
1473                                 invoke.Parameters.Add (create);
1474
1475                                 builder.MethodStatements.Add (invoke);
1476                         }
1477
1478                         if (builder is RootBuilder)
1479                                 if (!String.IsNullOrEmpty (parser.MetaResourceKey))
1480                                         AssignPropertiesFromResources (builder, parser.BaseType, parser.MetaResourceKey);
1481
1482                         if ((!isTemplate || builder is RootBuilder) && !String.IsNullOrEmpty (builder.GetAttribute ("meta:resourcekey")))
1483                                 CreateAssignStatementFromAttribute (builder, "meta:resourcekey");
1484
1485                         if (!childrenAsProperties && typeof (Control).IsAssignableFrom (builder.ControlType))
1486                                 builder.Method.Statements.Add (new CodeMethodReturnStatement (ctrlVar));
1487
1488                         builder.ProcessGeneratedCode (CompileUnit, BaseType, DerivedType, builder.Method, builder.DataBindingMethod);
1489                 }
1490
1491                 protected override void AddStatementsToConstructor (CodeConstructor ctor)
1492                 {
1493                         if (masterPageContentPlaceHolders == null || masterPageContentPlaceHolders.Count == 0)
1494                                 return;
1495
1496                         var ilist = new CodeVariableDeclarationStatement ();
1497                         ilist.Name = "__contentPlaceHolders";
1498                         ilist.Type = new CodeTypeReference (typeof (IList));
1499                         ilist.InitExpression = new CodePropertyReferenceExpression (thisRef, "ContentPlaceHolders");
1500
1501                         var ilistRef = new CodeVariableReferenceExpression ("__contentPlaceHolders");
1502                         CodeStatementCollection statements = ctor.Statements;
1503                         statements.Add (ilist);
1504
1505                         CodeMethodInvokeExpression mcall;
1506                         foreach (string id in masterPageContentPlaceHolders) {
1507                                 mcall = new CodeMethodInvokeExpression (ilistRef, "Add");
1508                                 mcall.Parameters.Add (new CodePrimitiveExpression (id.ToLowerInvariant ()));
1509                                 statements.Add (mcall);
1510                         }
1511                 }
1512
1513                 protected internal override void CreateMethods ()
1514                 {
1515                         base.CreateMethods ();
1516
1517                         CreateProperties ();
1518                         CreateControlTree (parser.RootBuilder, false, false);
1519                         CreateFrameworkInitializeMethod ();
1520                 }
1521
1522                 protected override void InitializeType ()
1523                 {
1524                         List <string> registeredTagNames = parser.RegisteredTagNames;
1525                         RootBuilder rb = parser.RootBuilder;
1526                         if (rb == null || registeredTagNames == null || registeredTagNames.Count == 0)
1527                                 return;
1528
1529                         AspComponent component;
1530                         foreach (string tagName in registeredTagNames) {
1531                                 component = rb.Foundry.GetComponent (tagName);
1532                                 if (component == null || component.Type == null) // unlikely
1533                                         throw new HttpException ("Custom control '" + tagName + "' cannot be found.");
1534                                 if (!(typeof (UserControl).IsAssignableFrom (component.Type)))
1535                                         throw new ParseException (parser.Location, "Type '" + component.Type.ToString () + "' does not derive from 'System.Web.UI.UserControl'.");
1536                                 AddReferencedAssembly (component.Type.Assembly);
1537                         }
1538                 }
1539
1540                 void CallBaseFrameworkInitialize (CodeMemberMethod method)
1541                 {
1542                         CodeBaseReferenceExpression baseRef = new CodeBaseReferenceExpression ();
1543                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (baseRef, "FrameworkInitialize");
1544                         method.Statements.Add (invoke);
1545                 }
1546
1547                 void CallSetStringResourcePointer (CodeMemberMethod method)
1548                 {
1549                         CodeFieldReferenceExpression stringResource = GetMainClassFieldReferenceExpression ("__stringResource");
1550                         method.Statements.Add (
1551                                 new CodeMethodInvokeExpression (
1552                                         thisRef,
1553                                         "SetStringResourcePointer",
1554                                         new CodeExpression[] {stringResource, new CodePrimitiveExpression (0)})
1555                         );
1556                 }
1557
1558                 void CreateFrameworkInitializeMethod ()
1559                 {
1560                         CodeMemberMethod method = new CodeMemberMethod ();
1561                         method.Name = "FrameworkInitialize";
1562                         method.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1563                         PrependStatementsToFrameworkInitialize (method);
1564                         CallBaseFrameworkInitialize (method);
1565                         CallSetStringResourcePointer (method);
1566                         AppendStatementsToFrameworkInitialize (method);
1567                         mainClass.Members.Add (method);
1568                 }
1569
1570                 protected virtual void PrependStatementsToFrameworkInitialize (CodeMemberMethod method)
1571                 {
1572                 }
1573
1574                 protected virtual void AppendStatementsToFrameworkInitialize (CodeMemberMethod method)
1575                 {
1576                         if (!parser.EnableViewState) {
1577                                 CodeAssignStatement stmt = new CodeAssignStatement ();
1578                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "EnableViewState");
1579                                 stmt.Right = new CodePrimitiveExpression (false);
1580                                 method.Statements.Add (stmt);
1581                         }
1582
1583                         CodeMethodReferenceExpression methodExpr;
1584                         methodExpr = new CodeMethodReferenceExpression (thisRef, "__BuildControlTree");
1585                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (methodExpr, thisRef);
1586                         method.Statements.Add (new CodeExpressionStatement (expr));
1587                 }
1588
1589                 protected override void AddApplicationAndSessionObjects ()
1590                 {
1591                         foreach (ObjectTagBuilder tag in GlobalAsaxCompiler.ApplicationObjects) {
1592                                 CreateFieldForObject (tag.Type, tag.ObjectID);
1593                                 CreateApplicationOrSessionPropertyForObject (tag.Type, tag.ObjectID, true, false);
1594                         }
1595
1596                         foreach (ObjectTagBuilder tag in GlobalAsaxCompiler.SessionObjects) {
1597                                 CreateApplicationOrSessionPropertyForObject (tag.Type, tag.ObjectID, false, false);
1598                         }
1599                 }
1600
1601                 protected override void CreateStaticFields ()
1602                 {
1603                         base.CreateStaticFields ();
1604
1605                         CodeMemberField fld = new CodeMemberField (typeof (object), "__stringResource");
1606                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
1607                         fld.InitExpression = new CodePrimitiveExpression (null);
1608                         mainClass.Members.Add (fld);
1609                 }
1610
1611                 protected void ProcessObjectTag (ObjectTagBuilder tag)
1612                 {
1613                         string fieldName = CreateFieldForObject (tag.Type, tag.ObjectID);
1614                         CreatePropertyForObject (tag.Type, tag.ObjectID, fieldName, false);
1615                 }
1616
1617                 void CreateProperties ()
1618                 {
1619                         if (!parser.AutoEventWireup) {
1620                                 CreateAutoEventWireup ();
1621                         } else {
1622                                 CreateAutoHandlers ();
1623                         }
1624
1625                         CreateApplicationInstance ();
1626                 }
1627
1628                 void CreateApplicationInstance ()
1629                 {
1630                         CodeMemberProperty prop = new CodeMemberProperty ();
1631                         Type appType = typeof (HttpApplication);
1632                         prop.Type = new CodeTypeReference (appType);
1633                         prop.Name = "ApplicationInstance";
1634                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Final;
1635
1636                         CodePropertyReferenceExpression propRef = new CodePropertyReferenceExpression (thisRef, "Context");
1637
1638                         propRef = new CodePropertyReferenceExpression (propRef, "ApplicationInstance");
1639
1640                         CodeCastExpression cast = new CodeCastExpression (appType.FullName, propRef);
1641                         prop.GetStatements.Add (new CodeMethodReturnStatement (cast));
1642                         if (partialClass != null)
1643                                 partialClass.Members.Add (prop);
1644                         else
1645                                 mainClass.Members.Add (prop);
1646                 }
1647
1648                 void CreateContentPlaceHolderTemplateProperty (string backingField, string name)
1649                 {
1650                         CodeMemberProperty prop = new CodeMemberProperty ();
1651                         prop.Type = new CodeTypeReference (typeof (ITemplate));
1652                         prop.Name = name;
1653                         prop.Attributes = MemberAttributes.Public;
1654
1655                         var ret = new CodeMethodReturnStatement ();
1656                         var fldRef = new CodeFieldReferenceExpression (thisRef, backingField);
1657                         ret.Expression = fldRef;
1658                         prop.GetStatements.Add (ret);
1659                         prop.SetStatements.Add (new CodeAssignStatement (fldRef, new CodePropertySetValueReferenceExpression ()));
1660
1661                         prop.CustomAttributes.Add (new CodeAttributeDeclaration ("TemplateContainer", new CodeAttributeArgument [] {
1662                                                 new CodeAttributeArgument (new CodeTypeOfExpression (new CodeTypeReference (typeof (MasterPage))))
1663                                         }
1664                                 )
1665                         );
1666
1667                         var enumValueRef = new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (typeof (TemplateInstance)), "Single");
1668                         prop.CustomAttributes.Add (new CodeAttributeDeclaration ("TemplateInstanceAttribute", new CodeAttributeArgument [] {
1669                                                 new CodeAttributeArgument (enumValueRef)
1670                                         }
1671                                 )
1672                         );
1673
1674                         mainClass.Members.Add (prop);
1675                 }
1676
1677                 void CreateAutoHandlers ()
1678                 {
1679                         // Create AutoHandlers property
1680                         CodeMemberProperty prop = new CodeMemberProperty ();
1681                         prop.Type = new CodeTypeReference (typeof (int));
1682                         prop.Name = "AutoHandlers";
1683                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1684
1685                         CodeMethodReturnStatement ret = new CodeMethodReturnStatement ();
1686                         CodeFieldReferenceExpression fldRef ;
1687                         fldRef = new CodeFieldReferenceExpression (mainClassExpr, "__autoHandlers");
1688                         ret.Expression = fldRef;
1689                         prop.GetStatements.Add (ret);
1690                         prop.SetStatements.Add (new CodeAssignStatement (fldRef, new CodePropertySetValueReferenceExpression ()));
1691
1692                         CodeAttributeDeclaration attr = new CodeAttributeDeclaration ("System.Obsolete");
1693                         prop.CustomAttributes.Add (attr);
1694                         mainClass.Members.Add (prop);
1695
1696                         // Add the __autoHandlers field
1697                         CodeMemberField fld = new CodeMemberField (typeof (int), "__autoHandlers");
1698                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
1699                         mainClass.Members.Add (fld);
1700                 }
1701
1702                 void CreateAutoEventWireup ()
1703                 {
1704                         // The getter returns false
1705                         CodeMemberProperty prop = new CodeMemberProperty ();
1706                         prop.Type = new CodeTypeReference (typeof (bool));
1707                         prop.Name = "SupportAutoEvents";
1708                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1709                         prop.GetStatements.Add (new CodeMethodReturnStatement (new CodePrimitiveExpression (false)));
1710                         mainClass.Members.Add (prop);
1711                 }
1712
1713                 protected virtual string HandleUrlProperty (string str, MemberInfo member)
1714                 {
1715                         return str;
1716                 }
1717
1718                 TypeConverter GetConverterForMember (MemberInfo member)
1719                 {
1720                         TypeDescriptionProvider prov = TypeDescriptor.GetProvider (member.ReflectedType);
1721                         if (prov == null)
1722                                 return null;
1723
1724                         ICustomTypeDescriptor desc = prov.GetTypeDescriptor (member.ReflectedType);
1725                         PropertyDescriptorCollection coll = desc != null ? desc.GetProperties () : null;
1726
1727                         if (coll == null || coll.Count == 0)
1728                                 return null;
1729
1730                         PropertyDescriptor pd = coll.Find (member.Name, false);
1731                         if (pd == null)
1732                                 return null;
1733
1734                         return pd.Converter;
1735                 }
1736
1737                 CodeExpression CreateNullableExpression (Type type, CodeExpression inst, bool nullable)
1738                 {
1739                         if (!nullable)
1740                                 return inst;
1741
1742                         return new CodeObjectCreateExpression (type, new CodeExpression[] {inst});
1743                 }
1744
1745                 bool SafeCanConvertFrom (Type type, TypeConverter cvt)
1746                 {
1747                         try {
1748                                 return cvt.CanConvertFrom (type);
1749                         } catch (NotImplementedException) {
1750                                 return false;
1751                         }
1752                 }
1753
1754                 bool SafeCanConvertTo (Type type, TypeConverter cvt)
1755                 {
1756                         try {
1757                                 return cvt.CanConvertTo (type);
1758                         } catch (NotImplementedException) {
1759                                 return false;
1760                         }
1761                 }
1762
1763                 CodeExpression GetExpressionFromString (Type type, string str, MemberInfo member)
1764                 {
1765                         TypeConverter cvt = GetConverterForMember (member);
1766                         if (cvt != null && !SafeCanConvertFrom (typeof (string), cvt))
1767                                 cvt = null;
1768
1769                         object convertedFromAttr = null;
1770                         bool preConverted = false;
1771                         if (cvt != null && str != null) {
1772                                 convertedFromAttr = cvt.ConvertFromInvariantString (str);
1773                                 if (convertedFromAttr != null) {
1774                                         type = convertedFromAttr.GetType ();
1775                                         preConverted = true;
1776                                 }
1777                         }
1778
1779                         bool wasNullable = false;
1780                         Type originalType = type;
1781
1782                         if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>)) {
1783                                 Type[] types = type.GetGenericArguments();
1784                                 originalType = type;
1785                                 type = types[0]; // we're interested only in the first type here
1786                                 wasNullable = true;
1787                         }
1788
1789                         if (type == typeof (string)) {
1790                                 object[] urlAttr = member.GetCustomAttributes (typeof (UrlPropertyAttribute), true);
1791                                 if (urlAttr.Length != 0)
1792                                         str = HandleUrlProperty ((preConverted && convertedFromAttr is string) ? (string)convertedFromAttr : str, member);
1793                                 else if (preConverted)
1794                                         return CreateNullableExpression (originalType,
1795                                                                          new CodePrimitiveExpression ((string) convertedFromAttr),
1796                                                                          wasNullable);
1797
1798                                 return CreateNullableExpression (originalType, new CodePrimitiveExpression (str), wasNullable);
1799                         } else if (type == typeof (bool)) {
1800                                 if (preConverted)
1801                                         return CreateNullableExpression (originalType,
1802                                                                          new CodePrimitiveExpression ((bool) convertedFromAttr),
1803                                                                          wasNullable);
1804
1805                                 if (str == null || str == "" || InvariantCompareNoCase (str, "true"))
1806                                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (true), wasNullable);
1807                                 else if (InvariantCompareNoCase (str, "false"))
1808                                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (false), wasNullable);
1809                                 else if (wasNullable && InvariantCompareNoCase(str, "null"))
1810                                         return new CodePrimitiveExpression (null);
1811                                 else
1812                                         throw new ParseException (currentLocation,
1813                                                         "Value '" + str  + "' is not a valid boolean.");
1814                         } else if (type == monoTypeType)
1815                                 type = typeof (System.Type);
1816
1817                         if (str == null)
1818                                 return new CodePrimitiveExpression (null);
1819
1820                         if (type.IsPrimitive)
1821                                 return CreateNullableExpression (originalType,
1822                                                                  new CodePrimitiveExpression (
1823                                                                          Convert.ChangeType (preConverted ? convertedFromAttr : str,
1824                                                                                              type, Helpers.InvariantCulture)),
1825                                                                  wasNullable);
1826
1827                         if (type == typeof (string [])) {
1828                                 string [] subs;
1829
1830                                 if (preConverted)
1831                                         subs = (string[])convertedFromAttr;
1832                                 else
1833                                         subs = str.Split (',');
1834                                 CodeArrayCreateExpression expr = new CodeArrayCreateExpression ();
1835                                 expr.CreateType = new CodeTypeReference (typeof (string));
1836                                 foreach (string v in subs)
1837                                         expr.Initializers.Add (new CodePrimitiveExpression (v.Trim ()));
1838
1839                                 return CreateNullableExpression (originalType, expr, wasNullable);
1840                         }
1841
1842                         if (type == typeof (Color)) {
1843                                 Color c;
1844
1845                                 if (!preConverted) {
1846                                         if (colorConverter == null)
1847                                                 colorConverter = TypeDescriptor.GetConverter (typeof (Color));
1848
1849                                         if (str.Trim().Length == 0) {
1850                                                 CodeTypeReferenceExpression ft = new CodeTypeReferenceExpression (typeof (Color));
1851                                                 return CreateNullableExpression (originalType,
1852                                                                                  new CodeFieldReferenceExpression (ft, "Empty"),
1853                                                                                  wasNullable);
1854                                         }
1855
1856                                         try {
1857                                                 if (str.IndexOf (',') == -1) {
1858                                                         c = (Color) colorConverter.ConvertFromString (str);
1859                                                 } else {
1860                                                         int [] argb = new int [4];
1861                                                         argb [0] = 255;
1862
1863                                                         string [] parts = str.Split (',');
1864                                                         int length = parts.Length;
1865                                                         if (length < 3)
1866                                                                 throw new Exception ();
1867
1868                                                         int basei = (length == 4) ? 0 : 1;
1869                                                         for (int i = length - 1; i >= 0; i--) {
1870                                                                 argb [basei + i] = (int) Byte.Parse (parts [i]);
1871                                                         }
1872                                                         c = Color.FromArgb (argb [0], argb [1], argb [2], argb [3]);
1873                                                 }
1874                                         } catch (Exception e) {
1875                                                 // Hack: "LightGrey" is accepted, but only for ASP.NET, as the
1876                                                 // TypeConverter for Color fails to ConvertFromString.
1877                                                 // Hence this hack...
1878                                                 if (InvariantCompareNoCase ("LightGrey", str)) {
1879                                                         c = Color.LightGray;
1880                                                 } else {
1881                                                         throw new ParseException (currentLocation,
1882                                                                                   "Color " + str + " is not a valid color.", e);
1883                                                 }
1884                                         }
1885                                 } else
1886                                         c = (Color)convertedFromAttr;
1887
1888                                 if (c.IsKnownColor) {
1889                                         CodeFieldReferenceExpression expr = new CodeFieldReferenceExpression ();
1890                                         if (c.IsSystemColor)
1891                                                 type = typeof (SystemColors);
1892
1893                                         expr.TargetObject = new CodeTypeReferenceExpression (type);
1894                                         expr.FieldName = c.Name;
1895                                         return CreateNullableExpression (originalType, expr, wasNullable);
1896                                 } else {
1897                                         CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
1898                                         m.TargetObject = new CodeTypeReferenceExpression (type);
1899                                         m.MethodName = "FromArgb";
1900                                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (m);
1901                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.A));
1902                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.R));
1903                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.G));
1904                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.B));
1905                                         return CreateNullableExpression (originalType, invoke, wasNullable);
1906                                 }
1907                         }
1908
1909                         TypeConverter converter = preConverted ? cvt : wasNullable ? TypeDescriptor.GetConverter (type) : null;
1910                         if (converter == null) {
1911                                 PropertyDescriptor pdesc = TypeDescriptor.GetProperties (member.DeclaringType) [member.Name];
1912                                 if (pdesc != null)
1913                                         converter = pdesc.Converter;
1914                                 else {
1915                                         Type memberType;
1916                                         switch (member.MemberType) {
1917                                                 case MemberTypes.Field:
1918                                                         memberType = ((FieldInfo)member).FieldType;
1919                                                         break;
1920
1921                                                 case MemberTypes.Property:
1922                                                         memberType = ((PropertyInfo)member).PropertyType;
1923                                                         break;
1924
1925                                                 default:
1926                                                         memberType = null;
1927                                                         break;
1928                                         }
1929
1930                                         if (memberType == null)
1931                                                 return null;
1932
1933                                         converter = TypeDescriptor.GetConverter (memberType);
1934                                 }
1935                         }
1936
1937                         if (preConverted || (converter != null && SafeCanConvertFrom (typeof (string), converter))) {
1938                                 object value = preConverted ? convertedFromAttr : converter.ConvertFromInvariantString (str);
1939
1940                                 if (SafeCanConvertTo (typeof (InstanceDescriptor), converter)) {
1941                                         InstanceDescriptor idesc = (InstanceDescriptor) converter.ConvertTo (value, typeof(InstanceDescriptor));
1942                                         if (wasNullable)
1943                                                 return CreateNullableExpression (originalType, GenerateInstance (idesc, true),
1944                                                                                  wasNullable);
1945
1946                                         CodeExpression instance = GenerateInstance (idesc, true);
1947                                         if (type.IsPublic)
1948                                                 return new CodeCastExpression (type, instance);
1949                                         else
1950                                                 return instance;
1951                                 }
1952
1953                                 CodeExpression exp = GenerateObjectInstance (value, false);
1954                                 if (exp != null)
1955                                         return CreateNullableExpression (originalType, exp, wasNullable);
1956
1957                                 CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
1958                                 m.TargetObject = new CodeTypeReferenceExpression (typeof (TypeDescriptor));
1959                                 m.MethodName = "GetConverter";
1960                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (m);
1961                                 CodeTypeReference tref = new CodeTypeReference (type);
1962                                 invoke.Parameters.Add (new CodeTypeOfExpression (tref));
1963
1964                                 invoke = new CodeMethodInvokeExpression (invoke, "ConvertFrom");
1965                                 invoke.Parameters.Add (new CodePrimitiveExpression (str));
1966
1967                                 if (wasNullable)
1968                                         return CreateNullableExpression (originalType, invoke, wasNullable);
1969
1970                                 return new CodeCastExpression (type, invoke);
1971                         }
1972
1973                         Console.WriteLine ("Unknown type: " + type + " value: " + str);
1974
1975                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (str), wasNullable);
1976                 }
1977
1978                 CodeExpression GenerateInstance (InstanceDescriptor idesc, bool throwOnError)
1979                 {
1980                         CodeExpression[] parameters = new CodeExpression [idesc.Arguments.Count];
1981                         int n = 0;
1982                         foreach (object ob in idesc.Arguments) {
1983                                 CodeExpression exp = GenerateObjectInstance (ob, throwOnError);
1984                                 if (exp == null) return null;
1985                                 parameters [n++] = exp;
1986                         }
1987
1988                         switch (idesc.MemberInfo.MemberType) {
1989                         case MemberTypes.Constructor:
1990                                 CodeTypeReference tob = new CodeTypeReference (idesc.MemberInfo.DeclaringType);
1991                                 return new CodeObjectCreateExpression (tob, parameters);
1992
1993                         case MemberTypes.Method:
1994                                 CodeTypeReferenceExpression mt = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
1995                                 return new CodeMethodInvokeExpression (mt, idesc.MemberInfo.Name, parameters);
1996
1997                         case MemberTypes.Field:
1998                                 CodeTypeReferenceExpression ft = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
1999                                 return new CodeFieldReferenceExpression (ft, idesc.MemberInfo.Name);
2000
2001                         case MemberTypes.Property:
2002                                 CodeTypeReferenceExpression pt = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
2003                                 return new CodePropertyReferenceExpression (pt, idesc.MemberInfo.Name);
2004                         }
2005                         throw new ParseException (currentLocation, "Invalid instance type.");
2006                 }
2007
2008                 CodeExpression GenerateObjectInstance (object value, bool throwOnError)
2009                 {
2010                         if (value == null)
2011                                 return new CodePrimitiveExpression (null);
2012
2013                         if (value is System.Type) {
2014                                 CodeTypeReference tref = new CodeTypeReference (value.ToString ());
2015                                 return new CodeTypeOfExpression (tref);
2016                         }
2017
2018                         Type t = value.GetType ();
2019
2020                         if (t.IsPrimitive || value is string)
2021                                 return new CodePrimitiveExpression (value);
2022
2023                         if (t.IsArray) {
2024                                 Array ar = (Array) value;
2025                                 CodeExpression[] items = new CodeExpression [ar.Length];
2026                                 for (int n=0; n<ar.Length; n++) {
2027                                         CodeExpression exp = GenerateObjectInstance (ar.GetValue (n), throwOnError);
2028                                         if (exp == null) return null;
2029                                         items [n] = exp;
2030                                 }
2031                                 return new CodeArrayCreateExpression (new CodeTypeReference (t), items);
2032                         }
2033
2034                         TypeConverter converter = TypeDescriptor.GetConverter (t);
2035                         if (converter != null && converter.CanConvertTo (typeof (InstanceDescriptor))) {
2036                                 InstanceDescriptor idesc = (InstanceDescriptor) converter.ConvertTo (value, typeof(InstanceDescriptor));
2037                                 return GenerateInstance (idesc, throwOnError);
2038                         }
2039
2040                         InstanceDescriptor desc = GetDefaultInstanceDescriptor (value);
2041                         if (desc != null) return GenerateInstance (desc, throwOnError);
2042
2043                         if (throwOnError)
2044                                 throw new ParseException (currentLocation, "Cannot generate an instance for the type: " + t);
2045                         else
2046                                 return null;
2047                 }
2048
2049                 InstanceDescriptor GetDefaultInstanceDescriptor (object value)
2050                 {
2051                         if (value is System.Web.UI.WebControls.Unit) {
2052                                 System.Web.UI.WebControls.Unit s = (System.Web.UI.WebControls.Unit) value;
2053                                 if (s.IsEmpty) {
2054                                         FieldInfo f = typeof (Unit).GetField ("Empty");
2055                                         return new InstanceDescriptor (f, null);
2056                                 }
2057                                 ConstructorInfo c = typeof(System.Web.UI.WebControls.Unit).GetConstructor (
2058                                         BindingFlags.Instance | BindingFlags.Public,
2059                                         null,
2060                                         new Type[] {typeof(double), typeof(System.Web.UI.WebControls.UnitType)},
2061                                         null);
2062
2063                                 return new InstanceDescriptor (c, new object[] {s.Value, s.Type});
2064                         }
2065
2066                         if (value is System.Web.UI.WebControls.FontUnit) {
2067                                 System.Web.UI.WebControls.FontUnit s = (System.Web.UI.WebControls.FontUnit) value;
2068                                 if (s.IsEmpty) {
2069                                         FieldInfo f = typeof (FontUnit).GetField ("Empty");
2070                                         return new InstanceDescriptor (f, null);
2071                                 }
2072
2073                                 Type cParamType = null;
2074                                 object cParam = null;
2075
2076                                 switch (s.Type) {
2077                                         case FontSize.AsUnit:
2078                                         case FontSize.NotSet:
2079                                                 cParamType = typeof (System.Web.UI.WebControls.Unit);
2080                                                 cParam = s.Unit;
2081                                                 break;
2082
2083                                         default:
2084                                                 cParamType = typeof (string);
2085                                                 cParam = s.Type.ToString ();
2086                                                 break;
2087                                 }
2088
2089                                 ConstructorInfo c = typeof(System.Web.UI.WebControls.FontUnit).GetConstructor (
2090                                         BindingFlags.Instance | BindingFlags.Public,
2091                                         null,
2092                                         new Type[] {cParamType},
2093                                         null);
2094                                 if (c != null)
2095                                         return new InstanceDescriptor (c, new object[] {cParam});
2096                         }
2097                         return null;
2098                 }
2099
2100 #if DEBUG
2101                 CodeMethodInvokeExpression CreateConsoleWriteLineCall (string format, params CodeExpression[] parms)
2102                 {
2103                         CodeMethodReferenceExpression cwl = new CodeMethodReferenceExpression (new CodeTypeReferenceExpression (typeof (System.Console)), "WriteLine");
2104                         CodeMethodInvokeExpression cwlCall = new CodeMethodInvokeExpression (cwl);
2105
2106                         cwlCall.Parameters.Add (new CodePrimitiveExpression (format));
2107                         if (parms != null && parms.Length > 0)
2108                                 foreach (CodeExpression expr in parms)
2109                                         cwlCall.Parameters.Add (expr);
2110
2111                         return cwlCall;
2112                 }
2113 #endif
2114         }
2115 }
2116
2117
2118