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.Drawing;
  36 using System.Globalization;
  37 using System.Reflection;
  38 using System.Text;
  39 using System.Web;
  40 using System.Web.UI;
  41 using System.Web.UI.WebControls;
  42 using System.Web.Util;
  43 using System.ComponentModel.Design.Serialization;
  44 using System.Text.RegularExpressions;
  45 #if NET_2_0
  46 using System.Configuration;
  47 using System.Collections.Specialized;
  48 using System.Collections.Generic;
  49 using System.Web.Configuration;
  50 using System.Resources;
  51 #endif
  52
  53 namespace System.Web.Compilation
  54 {
  55         class TemplateControlCompiler : BaseCompiler
  56         {
  57                 static BindingFlags noCaseFlags = BindingFlags.Public | BindingFlags.NonPublic |
  58                                                   BindingFlags.Instance | BindingFlags.IgnoreCase;
  59                 static Type monoTypeType = Type.GetType ("System.MonoType");
  60
  61                 TemplateControlParser parser;
  62                 int dataBoundAtts;
  63                 internal ILocation currentLocation;
  64
  65                 static TypeConverter colorConverter;
  66
  67                 internal static CodeVariableReferenceExpression ctrlVar = new CodeVariableReferenceExpression ("__ctrl");
  68
  69 #if NET_2_0
  70                 List <string> masterPageContentPlaceHolders;
  71                 static Regex startsWithBindRegex = new Regex (@"^Bind\s*\(", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  72                 // When modifying those, make sure to look at the SanitizeBindCall to make sure it
  73                 // picks up correct groups.
  74                 static Regex bindRegex = new Regex (@"Bind\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)\s*%>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  75                 static Regex bindRegexInValue = new Regex (@"Bind\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)\s*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  76 #endif
  77                 static Regex evalRegexInValue = new Regex (@"(.*)Eval\s*\(\s*[""']+(.*?)[""']+((\s*,\s*[""']+(.*?)[""']+)?)\s*\)(.*)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
  78
  79 #if NET_2_0
  80                 List <string> MasterPageContentPlaceHolders {
  81                         get {
  82                                 if (masterPageContentPlaceHolders == null)
  83                                         masterPageContentPlaceHolders = new List <string> ();
  84                                 return masterPageContentPlaceHolders;
  85                         }
  86                 }
  87 #endif
  88                 public TemplateControlCompiler (TemplateControlParser parser)
  89                         : base (parser)
  90                 {
  91                         this.parser = parser;
  92                 }
  93
  94                 protected void EnsureID (ControlBuilder builder)
  95                 {
  96                         if (builder.ID == null || builder.ID.Trim () == "")
  97                                 builder.ID = builder.GetNextID (null);
  98                 }
  99
 100                 void CreateField (ControlBuilder builder, bool check)
 101                 {
 102                         if (builder == null || builder.ID == null || builder.ControlType == null)
 103                                 return;
 104 #if NET_2_0
 105                         if (partialNameOverride [builder.ID] != null)
 106                                 return;
 107 #endif
 108
 109                         MemberAttributes ma = MemberAttributes.Family;
 110                         currentLocation = builder.Location;
 111                         if (check && CheckBaseFieldOrProperty (builder.ID, builder.ControlType, ref ma))
 112                                 return; // The field or property already exists in a base class and is accesible.
 113
 114                         CodeMemberField field;
 115                         field = new CodeMemberField (builder.ControlType.FullName, builder.ID);
 116                         field.Attributes = ma;
 117 #if NET_2_0
 118                         field.Type.Options |= CodeTypeReferenceOptions.GlobalReference;
 119
 120                         if (partialClass != null)
 121                                 partialClass.Members.Add (AddLinePragma (field, builder));
 122                         else
 123 #endif
 124                                 mainClass.Members.Add (AddLinePragma (field, builder));
 125                 }
 126
 127                 bool CheckBaseFieldOrProperty (string id, Type type, ref MemberAttributes ma)
 128                 {
 129                         FieldInfo fld = parser.BaseType.GetField (id, noCaseFlags);
 130
 131                         Type other = null;
 132                         if (fld == null || fld.IsPrivate) {
 133                                 PropertyInfo prop = parser.BaseType.GetProperty (id, noCaseFlags);
 134                                 if (prop != null) {
 135                                         MethodInfo setm = prop.GetSetMethod (true);
 136                                         if (setm != null)
 137                                                 other = prop.PropertyType;
 138                                 }
 139                         } else {
 140                                 other = fld.FieldType;
 141                         }
 142
 143                         if (other == null)
 144                                 return false;
 145
 146                         if (!other.IsAssignableFrom (type)) {
 147 #if NET_2_0
 148                                 ma |= MemberAttributes.New;
 149                                 return false;
 150 #else
 151                                 string msg = String.Format ("The base class includes the field '{0}', but its " +
 152                                                             "type '{1}' is not compatible with {2}",
 153                                                             id, other, type);
 154                                 throw new ParseException (currentLocation, msg);
 155 #endif
 156                         }
 157
 158                         return true;
 159                 }
 160
 161                 void AddParsedSubObjectStmt (ControlBuilder builder, CodeExpression expr)
 162                 {
 163                         if (!builder.HaveParserVariable) {
 164                                 CodeVariableDeclarationStatement p = new CodeVariableDeclarationStatement();
 165                                 p.Name = "__parser";
 166                                 p.Type = new CodeTypeReference (typeof (IParserAccessor));
 167                                 p.InitExpression = new CodeCastExpression (typeof (IParserAccessor), ctrlVar);
 168                                 builder.MethodStatements.Add (p);
 169                                 builder.HaveParserVariable = true;
 170                         }
 171
 172                         CodeVariableReferenceExpression var = new CodeVariableReferenceExpression ("__parser");
 173                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (var, "AddParsedSubObject");
 174                         invoke.Parameters.Add (expr);
 175                         builder.MethodStatements.Add (AddLinePragma (invoke, builder));
 176                 }
 177
 178                 void InitMethod (ControlBuilder builder, bool isTemplate, bool childrenAsProperties)
 179                 {
 180                         currentLocation = builder.Location;
 181
 182                         string tailname = ((builder is RootBuilder) ? "Tree" : ("_" + builder.ID));
 183                         CodeMemberMethod method = new CodeMemberMethod ();
 184                         builder.Method = method;
 185                         builder.MethodStatements = method.Statements;
 186
 187                         method.Name = "__BuildControl" + tailname;
 188                         method.Attributes = MemberAttributes.Private | MemberAttributes.Final;
 189                         Type type = builder.ControlType;
 190
 191                         /* in the case this is the __BuildControlTree
 192                          * method, allow subclasses to insert control
 193                          * specific code. */
 194                         if (builder is RootBuilder) {
 195 #if NET_2_0
 196                                 SetCustomAttributes (method);
 197 #endif
 198                                 AddStatementsToInitMethod (method);
 199                         }
 200
 201                         if (builder.HasAspCode) {
 202                                 CodeMemberMethod renderMethod = new CodeMemberMethod ();
 203                                 builder.RenderMethod = renderMethod;
 204                                 renderMethod.Name = "__Render" + tailname;
 205                                 renderMethod.Attributes = MemberAttributes.Private | MemberAttributes.Final;
 206                                 CodeParameterDeclarationExpression arg1 = new CodeParameterDeclarationExpression ();
 207                                 arg1.Type = new CodeTypeReference (typeof (HtmlTextWriter));
 208                                 arg1.Name = "__output";
 209                                 CodeParameterDeclarationExpression arg2 = new CodeParameterDeclarationExpression ();
 210                                 arg2.Type = new CodeTypeReference (typeof (Control));
 211                                 arg2.Name = "parameterContainer";
 212                                 renderMethod.Parameters.Add (arg1);
 213                                 renderMethod.Parameters.Add (arg2);
 214                                 mainClass.Members.Add (renderMethod);
 215                         }
 216
 217                         if (childrenAsProperties || builder.ControlType == null) {
 218                                 string typeString;
 219                                 if (builder is RootBuilder)
 220                                         typeString = parser.ClassName;
 221                                 else {
 222                                         if (builder.ControlType != null && builder.IsProperty &&
 223                                             !typeof (ITemplate).IsAssignableFrom (builder.ControlType))
 224                                                 typeString = builder.ControlType.FullName;
 225                                         else
 226                                                 typeString = "System.Web.UI.Control";
 227                                         ProcessTemplateChildren (builder);
 228                                 }
 229
 230                                 method.Parameters.Add (new CodeParameterDeclarationExpression (typeString, "__ctrl"));
 231                         } else {
 232
 233                                 if (typeof (Control).IsAssignableFrom (type))
 234                                         method.ReturnType = new CodeTypeReference (typeof (Control));
 235
 236                                 // _ctrl = new $controlType ($parameters);
 237                                 //
 238                                 CodeObjectCreateExpression newExpr = new CodeObjectCreateExpression (type);
 239
 240                                 object [] atts = type.GetCustomAttributes (typeof (ConstructorNeedsTagAttribute), true);
 241                                 if (atts != null && atts.Length > 0) {
 242                                         ConstructorNeedsTagAttribute att = (ConstructorNeedsTagAttribute) atts [0];
 243                                         if (att.NeedsTag)
 244                                                 newExpr.Parameters.Add (new CodePrimitiveExpression (builder.TagName));
 245                                 } else if (builder is DataBindingBuilder) {
 246                                         newExpr.Parameters.Add (new CodePrimitiveExpression (0));
 247                                         newExpr.Parameters.Add (new CodePrimitiveExpression (1));
 248                                 }
 249
 250                                 method.Statements.Add (new CodeVariableDeclarationStatement (builder.ControlType, "__ctrl"));
 251                                 CodeAssignStatement assign = new CodeAssignStatement ();
 252                                 assign.Left = ctrlVar;
 253                                 assign.Right = newExpr;
 254                                 method.Statements.Add (AddLinePragma (assign, builder));
 255
 256                                 // this.$builderID = _ctrl;
 257                                 //
 258                                 CodeFieldReferenceExpression builderID = new CodeFieldReferenceExpression ();
 259                                 builderID.TargetObject = thisRef;
 260                                 builderID.FieldName = builder.ID;
 261                                 assign = new CodeAssignStatement ();
 262                                 assign.Left = builderID;
 263                                 assign.Right = ctrlVar;
 264                                 method.Statements.Add (AddLinePragma (assign, builder));
 265
 266                                 if (typeof (UserControl).IsAssignableFrom (type)) {
 267                                         CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression ();
 268                                         mref.TargetObject = builderID;
 269                                         mref.MethodName = "InitializeAsUserControl";
 270                                         CodeMethodInvokeExpression initAsControl = new CodeMethodInvokeExpression (mref);
 271                                         initAsControl.Parameters.Add (new CodePropertyReferenceExpression (thisRef, "Page"));
 272                                         method.Statements.Add (initAsControl);
 273                                 }
 274
 275 #if NET_2_0
 276                                 if (builder.ParentTemplateBuilder is System.Web.UI.WebControls.ContentBuilderInternal) {
 277                                         PropertyInfo pi;
 278
 279                                         try {
 280                                                 pi = type.GetProperty ("TemplateControl");
 281                                         } catch (Exception) {
 282                                                 pi = null;
 283                                         }
 284
 285                                         if (pi != null && pi.CanWrite) {
 286                                                 // __ctrl.TemplateControl = this;
 287                                                 assign = new CodeAssignStatement ();
 288                                                 assign.Left = new CodePropertyReferenceExpression (ctrlVar, "TemplateControl");;
 289                                                 assign.Right = thisRef;
 290                                                 method.Statements.Add (assign);
 291                                         }
 292                                 }
 293
 294                                 // _ctrl.SkinID = $value
 295                                 // _ctrl.ApplyStyleSheetSkin (this);
 296                                 //
 297                                 // the SkinID assignment needs to come
 298                                 // before the call to
 299                                 // ApplyStyleSheetSkin, for obvious
 300                                 // reasons.  We skip SkinID in
 301                                 // CreateAssignStatementsFromAttributes
 302                                 // below.
 303                                 //
 304                                 string skinid = builder.GetAttribute ("skinid");
 305                                 if (!String.IsNullOrEmpty (skinid))
 306                                         CreateAssignStatementFromAttribute (builder, "skinid");
 307
 308                                 if (typeof (WebControl).IsAssignableFrom (type)) {
 309                                         CodeMethodInvokeExpression applyStyleSheetSkin = new CodeMethodInvokeExpression (ctrlVar, "ApplyStyleSheetSkin");
 310                                         if (typeof (Page).IsAssignableFrom (parser.BaseType))
 311                                                 applyStyleSheetSkin.Parameters.Add (thisRef);
 312                                         else
 313                                                 applyStyleSheetSkin.Parameters.Add (new CodePropertyReferenceExpression (thisRef, "Page"));
 314                                         method.Statements.Add (applyStyleSheetSkin);
 315                                 }
 316 #endif
 317
 318                                 // Process template children before anything else
 319                                 ProcessTemplateChildren (builder);
 320
 321                                 // process ID here. It should be set before any other attributes are
 322                                 // assigned, since the control code may rely on ID being set. We
 323                                 // skip ID in CreateAssignStatementsFromAttributes
 324                                 string ctl_id = builder.GetAttribute ("id");
 325                                 if (ctl_id != null && ctl_id.Length != 0)
 326                                         CreateAssignStatementFromAttribute (builder, "id");
 327
 328
 329 #if NET_2_0
 330                                 if (typeof (ContentPlaceHolder).IsAssignableFrom (type)) {
 331                                         List <string> placeHolderIds = MasterPageContentPlaceHolders;
 332                                         string cphID = builder.ID;
 333
 334                                         if (!placeHolderIds.Contains (cphID))
 335                                                 placeHolderIds.Add (cphID);
 336
 337                                         CodeConditionStatement condStatement;
 338
 339                                         // Add the __Template_* field
 340                                         string templateField = "__Template_" + cphID;
 341                                         CodeMemberField fld = new CodeMemberField (typeof (ITemplate), templateField);
 342                                         fld.Attributes = MemberAttributes.Private;
 343                                         mainClass.Members.Add (fld);
 344
 345                                         CodeFieldReferenceExpression templateID = new CodeFieldReferenceExpression ();
 346                                         templateID.TargetObject = thisRef;
 347                                         templateID.FieldName = templateField;
 348
 349                                         CreateContentPlaceHolderTemplateProperty (templateField, "Template_" + cphID);
 350
 351                                         // if ((this.ContentTemplates != null)) {
 352                                         //      this.__Template_$builder.ID = ((System.Web.UI.ITemplate)(this.ContentTemplates["$builder.ID"]));
 353                                         // }
 354                                         //
 355                                         CodeFieldReferenceExpression contentTemplates = new CodeFieldReferenceExpression ();
 356                                         contentTemplates.TargetObject = thisRef;
 357                                         contentTemplates.FieldName = "ContentTemplates";
 358
 359                                         CodeIndexerExpression indexer = new CodeIndexerExpression ();
 360                                         indexer.TargetObject = new CodePropertyReferenceExpression (thisRef, "ContentTemplates");
 361                                         indexer.Indices.Add (new CodePrimitiveExpression (cphID));
 362
 363                                         assign = new CodeAssignStatement ();
 364                                         assign.Left = templateID;
 365                                         assign.Right = new CodeCastExpression (new CodeTypeReference (typeof (ITemplate)), indexer);
 366
 367                                         condStatement = new CodeConditionStatement (new CodeBinaryOperatorExpression (contentTemplates,
 368                                                                                                                       CodeBinaryOperatorType.IdentityInequality,
 369                                                                                                                       new CodePrimitiveExpression (null)),
 370                                                                                     assign);
 371
 372                                         method.Statements.Add (condStatement);
 373
 374                                         // if ((this.__Template_mainContent != null)) {
 375                                         //      this.__Template_mainContent.InstantiateIn(__ctrl);
 376                                         // }
 377                                         // and also set things up such that any additional code ends up in:
 378                                         // else {
 379                                         //      ...
 380                                         // }
 381                                         //
 382                                         CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression ();
 383                                         methodRef.TargetObject = templateID;
 384                                         methodRef.MethodName = "InstantiateIn";
 385
 386                                         CodeMethodInvokeExpression instantiateInInvoke;
 387                                         instantiateInInvoke = new CodeMethodInvokeExpression (methodRef, ctrlVar);
 388
 389                                         condStatement = new CodeConditionStatement (new CodeBinaryOperatorExpression (templateID,
 390                                                                                                                       CodeBinaryOperatorType.IdentityInequality,
 391                                                                                                                       new CodePrimitiveExpression (null)),
 392                                                                                     new CodeExpressionStatement (instantiateInInvoke));
 393                                         method.Statements.Add (condStatement);
 394
 395                                         // this is the bit that causes the following stuff to end up in the else { }
 396                                         builder.MethodStatements = condStatement.FalseStatements;
 397                                 }
 398 #endif
 399                         }
 400
 401                         mainClass.Members.Add (method);
 402                 }
 403
 404                 void ProcessTemplateChildren (ControlBuilder builder)
 405                 {
 406                         ArrayList templates = builder.TemplateChildren;
 407                         if (templates != null && templates.Count > 0) {
 408                                 foreach (TemplateBuilder tb in templates) {
 409                                         CreateControlTree (tb, true, false);
 410 #if NET_2_0
 411                                         if (tb.BindingDirection == BindingDirection.TwoWay) {
 412                                                 string extractMethod = CreateExtractValuesMethod (tb);
 413                                                 AddBindableTemplateInvocation (builder, tb.TagName, tb.Method.Name, extractMethod);
 414                                         } else
 415 #endif
 416                                                 AddTemplateInvocation (builder, tb.TagName, tb.Method.Name);
 417                                 }
 418                         }
 419                 }
 420
 421 #if NET_2_0
 422                 void SetCustomAttribute (CodeMemberMethod method, UnknownAttributeDescriptor uad)
 423                 {
 424                         CodeAssignStatement assign = new CodeAssignStatement ();
 425                         assign.Left = new CodePropertyReferenceExpression (
 426                                 new CodeArgumentReferenceExpression("__ctrl"),
 427                                 uad.Info.Name);
 428                         assign.Right = GetExpressionFromString (uad.Value.GetType (), uad.Value.ToString (), uad.Info);
 429
 430                         method.Statements.Add (assign);
 431                 }
 432
 433                 void SetCustomAttributes (CodeMemberMethod method)
 434                 {
 435                         Type baseType = parser.BaseType;
 436                         if (baseType == null)
 437                                 return;
 438
 439                         List <UnknownAttributeDescriptor> attrs = parser.UnknownMainAttributes;
 440                         if (attrs == null || attrs.Count == 0)
 441                                 return;
 442
 443                         foreach (UnknownAttributeDescriptor uad in attrs)
 444                                 SetCustomAttribute (method, uad);
 445                 }
 446 #endif
 447
 448                 protected virtual void AddStatementsToInitMethod (CodeMemberMethod method)
 449                 {
 450                 }
 451
 452                 void AddLiteralSubObject (ControlBuilder builder, string str)
 453                 {
 454                         if (!builder.HasAspCode) {
 455                                 CodeObjectCreateExpression expr;
 456                                 expr = new CodeObjectCreateExpression (typeof (LiteralControl), new CodePrimitiveExpression (str));
 457                                 AddParsedSubObjectStmt (builder, expr);
 458                         } else {
 459                                 CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression ();
 460                                 methodRef.TargetObject = new CodeArgumentReferenceExpression ("__output");
 461                                 methodRef.MethodName = "Write";
 462
 463                                 CodeMethodInvokeExpression expr;
 464                                 expr = new CodeMethodInvokeExpression (methodRef, new CodePrimitiveExpression (str));
 465                                 builder.RenderMethod.Statements.Add (expr);
 466                         }
 467                 }
 468
 469                 string TrimDB (string value, bool trimTail)
 470                 {
 471                         string str = value.Trim ();
 472                         int len = str.Length;
 473                         int idx = str.IndexOf ('#', 2) + 1;
 474                         if (idx >= len)
 475                                 return String.Empty;
 476                         if (trimTail)
 477                                 len -= 2;
 478
 479                         return str.Substring (idx, len - idx).Trim ();
 480                 }
 481
 482                 CodeExpression CreateEvalInvokeExpression (Regex regex, string value, bool isBind)
 483                 {
 484                         Match match = regex.Match (value);
 485                         if (!match.Success) {
 486 #if NET_2_0
 487                                 if (isBind)
 488                                         throw new HttpParseException ("Bind invocation wasn't formatted properly.");
 489 #endif
 490                                 return null;
 491                         }
 492
 493                         string sanitizedSnippet;
 494                         if (isBind)
 495                                 sanitizedSnippet = SanitizeBindCall (match);
 496                         else
 497                                 sanitizedSnippet = value;
 498
 499                         return new CodeSnippetExpression (sanitizedSnippet);
 500                 }
 501
 502                 string SanitizeBindCall (Match match)
 503                 {
 504                         GroupCollection groups = match.Groups;
 505                         StringBuilder sb = new StringBuilder ("Eval(\"" + groups [1] + "\"");
 506                         Group second = groups [4];
 507                         if (second != null) {
 508                                 string v = second.Value;
 509                                 if (v != null && v.Length > 0)
 510                                         sb.Append (",\"" + second + "\"");
 511                         }
 512
 513                         sb.Append (")");
 514                         return sb.ToString ();
 515                 }
 516
 517                 string DataBoundProperty (ControlBuilder builder, Type type, string varName, string value)
 518                 {
 519                         value = TrimDB (value, true);
 520                         CodeMemberMethod method;
 521                         string dbMethodName = builder.Method.Name + "_DB_" + dataBoundAtts++;
 522                         CodeExpression valueExpression = null;
 523                         value = value.Trim ();
 524
 525 #if NET_2_0
 526                         bool need_if = false;
 527                         if (startsWithBindRegex.Match (value).Success) {
 528                                 valueExpression = CreateEvalInvokeExpression (bindRegexInValue, value, true);
 529                                 if (valueExpression != null)
 530                                         need_if = true;
 531                         } else
 532 #endif
 533                                 if (StrUtils.StartsWith (value, "Eval", true))
 534                                         valueExpression = CreateEvalInvokeExpression (evalRegexInValue, value, false);
 535
 536                         if (valueExpression == null)
 537                                 valueExpression = new CodeSnippetExpression (value);
 538
 539                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), builder.ControlType);
 540                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
 541
 542                         // This should be a CodePropertyReferenceExpression for properties... but it works anyway
 543                         CodeFieldReferenceExpression field = new CodeFieldReferenceExpression (targetExpr, varName);
 544
 545                         CodeExpression expr;
 546                         if (type == typeof (string)) {
 547                                 CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
 548                                 CodeTypeReferenceExpression conv = new CodeTypeReferenceExpression (typeof (Convert));
 549                                 tostring.Method = new CodeMethodReferenceExpression (conv, "ToString");
 550                                 tostring.Parameters.Add (valueExpression);
 551                                 expr = tostring;
 552                         } else
 553                                 expr = new CodeCastExpression (type, valueExpression);
 554
 555                         CodeAssignStatement assign = new CodeAssignStatement (field, expr);
 556 #if NET_2_0
 557                         if (need_if) {
 558                                 CodeExpression page = new CodePropertyReferenceExpression (thisRef, "Page");
 559                                 CodeExpression left = new CodeMethodInvokeExpression (page, "GetDataItem");
 560                                 CodeBinaryOperatorExpression ce = new CodeBinaryOperatorExpression (left, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression (null));
 561                                 CodeConditionStatement ccs = new CodeConditionStatement (ce, assign);
 562                                 method.Statements.Add (ccs);
 563                         }
 564                         else
 565 #endif
 566                                 method.Statements.Add (assign);
 567
 568                         mainClass.Members.Add (method);
 569                         return method.Name;
 570                 }
 571
 572                 void AddCodeForPropertyOrField (ControlBuilder builder, Type type, string var_name, string att, MemberInfo member, bool isDataBound, bool isExpression)
 573                 {
 574                         CodeMemberMethod method = builder.Method;
 575                         bool isWritable = IsWritablePropertyOrField (member);
 576
 577                         if (isDataBound && isWritable) {
 578                                 string dbMethodName = DataBoundProperty (builder, type, var_name, att);
 579                                 AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
 580                                 return;
 581                         }
 582 #if NET_2_0
 583                         else if (isExpression && isWritable) {
 584                                 AddExpressionAssign (method, builder, member, type, var_name, att);
 585                                 return;
 586                         }
 587 #endif
 588
 589                         CodeAssignStatement assign = new CodeAssignStatement ();
 590                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, var_name);
 591                         currentLocation = builder.Location;
 592                         assign.Right = GetExpressionFromString (type, att, member);
 593
 594                         method.Statements.Add (AddLinePragma (assign, builder));
 595                 }
 596
 597                 bool IsDirective (string value, char directiveChar)
 598                 {
 599                         if (value == null || value == String.Empty)
 600                                 return false;
 601
 602                         value = value.Trim ();
 603                         if (!StrUtils.StartsWith (value, "<%") || !StrUtils.EndsWith (value, "%>"))
 604                                 return false;
 605
 606                         int dcIndex = value.IndexOf (directiveChar, 2);
 607                         if (dcIndex == -1)
 608                                 return false;
 609
 610                         if (dcIndex == 2)
 611                                 return true;
 612                         dcIndex--;
 613
 614                         while (dcIndex >= 2) {
 615                                 if (!Char.IsWhiteSpace (value [dcIndex]))
 616                                         return false;
 617                                 dcIndex--;
 618                         }
 619
 620                         return true;
 621                 }
 622
 623                 bool IsDataBound (string value)
 624                 {
 625                         return IsDirective (value, '#');
 626                 }
 627
 628 #if NET_2_0
 629                 bool IsExpression (string value)
 630                 {
 631                         return IsDirective (value, '$');
 632                 }
 633
 634                 void RegisterBindingInfo (ControlBuilder builder, string propName, ref string value)
 635                 {
 636                         string str = TrimDB (value, false);
 637                         if (StrUtils.StartsWith (str, "Bind", true)) {
 638                                 Match match = bindRegex.Match (str);
 639                                 if (match.Success) {
 640                                         string bindingName = match.Groups [1].Value;
 641                                         TemplateBuilder templateBuilder = builder.ParentTemplateBuilder;
 642
 643                                         if (templateBuilder == null)
 644                                                 throw new HttpException ("Bind expression not allowed in this context.");
 645
 646                                         if (templateBuilder.BindingDirection == BindingDirection.OneWay)
 647                                                 return;
 648
 649                                         string id = builder.GetAttribute ("ID");
 650                                         if (String.IsNullOrEmpty (id))
 651                                                 throw new HttpException ("Control of type '" + builder.ControlType + "' using two-way binding on property '" + propName + "' must have an ID.");
 652
 653                                         templateBuilder.RegisterBoundProperty (builder.ControlType, propName, id, bindingName);
 654                                 }
 655                         }
 656                 }
 657 #endif
 658
 659                 /*
 660                 static bool InvariantCompare (string a, string b)
 661                 {
 662                         return (0 == String.Compare (a, b, false, CultureInfo.InvariantCulture));
 663                 }
 664                 */
 665
 666                 static bool InvariantCompareNoCase (string a, string b)
 667                 {
 668                         return (0 == String.Compare (a, b, true, CultureInfo.InvariantCulture));
 669                 }
 670
 671                 static MemberInfo GetFieldOrProperty (Type type, string name)
 672                 {
 673                         MemberInfo member = null;
 674                         try {
 675                                 member = type.GetProperty (name, noCaseFlags & ~BindingFlags.NonPublic);
 676                         } catch {}
 677
 678                         if (member != null)
 679                                 return member;
 680
 681                         try {
 682                                 member = type.GetField (name, noCaseFlags & ~BindingFlags.NonPublic);
 683                         } catch {}
 684
 685                         return member;
 686                 }
 687
 688                 static bool IsWritablePropertyOrField (MemberInfo member)
 689                 {
 690                         PropertyInfo pi = member as PropertyInfo;
 691                         if (pi != null)
 692                                 return pi.GetSetMethod (false) != null;
 693                         FieldInfo fi = member as FieldInfo;
 694                         if (fi != null)
 695                                 return !fi.IsInitOnly;
 696                         throw new ArgumentException ("Argument must be of PropertyInfo or FieldInfo type", "member");
 697                 }
 698
 699                 bool ProcessPropertiesAndFields (ControlBuilder builder, MemberInfo member, string id,
 700                                                  string attValue, string prefix)
 701                 {
 702                         int hyphen = id.IndexOf ('-');
 703                         bool isPropertyInfo = (member is PropertyInfo);
 704                         bool isDataBound = IsDataBound (attValue);
 705 #if NET_2_0
 706                         bool isExpression = !isDataBound && IsExpression (attValue);
 707 #else
 708                         bool isExpression = false;
 709 #endif
 710                         Type type;
 711                         if (isPropertyInfo) {
 712                                 type = ((PropertyInfo) member).PropertyType;
 713                         } else {
 714                                 type = ((FieldInfo) member).FieldType;
 715                         }
 716
 717                         if (InvariantCompareNoCase (member.Name, id)) {
 718 #if NET_2_0
 719                                 if (isDataBound)
 720                                         RegisterBindingInfo (builder, member.Name, ref attValue);
 721
 722 #endif
 723                                 if (!IsWritablePropertyOrField (member))
 724                                         return false;
 725
 726                                 AddCodeForPropertyOrField (builder, type, member.Name, attValue, member, isDataBound, isExpression);
 727                                 return true;
 728                         }
 729
 730                         if (hyphen == -1)
 731                                 return false;
 732
 733                         string prop_field = id.Replace ('-', '.');
 734                         string [] parts = prop_field.Split (new char [] {'.'});
 735                         int length = parts.Length;
 736
 737                         if (length < 2 || !InvariantCompareNoCase (member.Name, parts [0]))
 738                                 return false;
 739
 740                         if (length > 2) {
 741                                 MemberInfo sub_member = GetFieldOrProperty (type, parts [1]);
 742                                 if (sub_member == null)
 743                                         return false;
 744
 745                                 string new_prefix = prefix + member.Name + ".";
 746                                 string new_id = id.Substring (hyphen + 1);
 747                                 return ProcessPropertiesAndFields (builder, sub_member, new_id, attValue, new_prefix);
 748                         }
 749
 750                         MemberInfo subpf = GetFieldOrProperty (type, parts [1]);
 751                         if (!(subpf is PropertyInfo))
 752                                 return false;
 753
 754                         PropertyInfo subprop = (PropertyInfo) subpf;
 755                         if (subprop.CanWrite == false)
 756                                 return false;
 757
 758                         bool is_bool = (subprop.PropertyType == typeof (bool));
 759                         if (!is_bool && attValue == null)
 760                                 return false; // Font-Size -> Font-Size="" as html
 761
 762                         string val = attValue;
 763                         if (attValue == null && is_bool)
 764                                 val = "true"; // Font-Bold <=> Font-Bold="true"
 765 #if NET_2_0
 766                         if (isDataBound)
 767                                 RegisterBindingInfo (builder, prefix + member.Name + "." + subprop.Name, ref attValue);
 768 #endif
 769                         AddCodeForPropertyOrField (builder, subprop.PropertyType,
 770                                                    prefix + member.Name + "." + subprop.Name,
 771                                                    val, subprop, isDataBound, isExpression);
 772
 773                         return true;
 774                 }
 775
 776 #if NET_2_0
 777                 CodeExpression CompileExpression (MemberInfo member, Type type, string value, bool useSetAttribute)
 778                 {
 779                         // First let's find the correct expression builder
 780                         value = value.Substring (3, value.Length - 5).Trim ();
 781                         int colon = value.IndexOf (':');
 782                         if (colon == -1)
 783                                 return null;
 784                         string prefix = value.Substring (0, colon).Trim ();
 785                         string expr = value.Substring (colon + 1).Trim ();
 786
 787                         CompilationSection cs = (CompilationSection)WebConfigurationManager.GetWebApplicationSection ("system.web/compilation");
 788                         if (cs == null)
 789                                 return null;
 790
 791                         if (cs.ExpressionBuilders == null || cs.ExpressionBuilders.Count == 0)
 792                                 return null;
 793
 794                         System.Web.Configuration.ExpressionBuilder ceb = cs.ExpressionBuilders[prefix];
 795                         if (ceb == null)
 796                                 return null;
 797
 798                         string builderType = ceb.Type;
 799                         Type t;
 800
 801                         try {
 802                                 t = HttpApplication.LoadType (builderType, true);
 803                         } catch (Exception e) {
 804                                 throw new HttpException (String.Format ("Failed to load expression builder type `{0}'", builderType), e);
 805                         }
 806
 807                         if (!typeof (System.Web.Compilation.ExpressionBuilder).IsAssignableFrom (t))
 808                                 throw new HttpException (String.Format ("Type {0} is not descendant from System.Web.Compilation.ExpressionBuilder", builderType));
 809
 810                         System.Web.Compilation.ExpressionBuilder eb = null;
 811                         object parsedData;
 812                         ExpressionBuilderContext ctx;
 813
 814                         try {
 815                                 eb = Activator.CreateInstance (t) as System.Web.Compilation.ExpressionBuilder;
 816                                 ctx = new ExpressionBuilderContext (HttpContext.Current.Request.FilePath);
 817                                 parsedData = eb.ParseExpression (expr, type, ctx);
 818                         } catch (Exception e) {
 819                                 throw new HttpException (String.Format ("Failed to create an instance of type `{0}'", builderType), e);
 820                         }
 821
 822                         BoundPropertyEntry bpe = CreateBoundPropertyEntry (member as PropertyInfo, prefix, expr, useSetAttribute);
 823                         return eb.GetCodeExpression (bpe, parsedData, ctx);
 824                 }
 825
 826                 void AddExpressionAssign (CodeMemberMethod method, ControlBuilder builder, MemberInfo member, Type type, string name, string value)
 827                 {
 828                         CodeExpression expr = CompileExpression (member, type, value, false);
 829
 830                         if (expr == null)
 831                                 return;
 832
 833                         CodeAssignStatement assign = new CodeAssignStatement ();
 834                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, name);
 835                         assign.Right = expr;
 836
 837                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
 838                 }
 839
 840                 BoundPropertyEntry CreateBoundPropertyEntry (PropertyInfo pi, string prefix, string expr, bool useSetAttribute)
 841                 {
 842                         BoundPropertyEntry ret = new BoundPropertyEntry ();
 843                         ret.Expression = expr;
 844                         ret.ExpressionPrefix = prefix;
 845                         ret.Generated = false;
 846                         if (pi != null) {
 847                                 ret.Name = pi.Name;
 848                                 ret.PropertyInfo = pi;
 849                                 ret.Type = pi.PropertyType;
 850                         }
 851                         ret.UseSetAttribute = useSetAttribute;
 852
 853                         return ret;
 854                 }
 855
 856                 bool ResourceProviderHasObject (string key)
 857                 {
 858                         IResourceProvider rp = HttpContext.GetResourceProvider (key, true);
 859                         if (rp == null)
 860                                 return false;
 861
 862                         IResourceReader rr = rp.ResourceReader;
 863                         if (rr == null)
 864                                 return false;
 865
 866                         IDictionaryEnumerator ide = rr.GetEnumerator ();
 867                         if (ide == null)
 868                                 return false;
 869
 870                         string dictKey;
 871                         while (ide.MoveNext ()) {
 872                                 dictKey = ide.Key as string;
 873                                 if (String.IsNullOrEmpty (dictKey))
 874                                         continue;
 875                                 if (String.Compare (key, dictKey, StringComparison.Ordinal) == 0)
 876                                         return true;
 877                         }
 878
 879                         return false;
 880                 }
 881
 882                 void AssignPropertyFromResources (ControlBuilder builder, MemberInfo mi, string attvalue)
 883                 {
 884                         bool isProperty = mi.MemberType == MemberTypes.Property;
 885                         bool isField = !isProperty && (mi.MemberType == MemberTypes.Field);
 886
 887                         if (!isProperty && !isField || !IsWritablePropertyOrField (mi))
 888                                 return;
 889
 890                         object[] attrs = mi.GetCustomAttributes (typeof (LocalizableAttribute), true);
 891                         if (attrs == null || attrs.Length == 0 || !((LocalizableAttribute)attrs [0]).IsLocalizable)
 892                                 return;
 893
 894                         string memberName = mi.Name;
 895                         string resname = String.Concat (attvalue, ".", memberName);
 896
 897                         if (!ResourceProviderHasObject (resname))
 898                                 return;
 899
 900                         // __ctrl.Text = System.Convert.ToString(HttpContext.GetLocalResourceObject("ButtonResource1.Text"));
 901                         string inputFile = parser.InputFile;
 902                         string physPath = HttpContext.Current.Request.PhysicalApplicationPath;
 903
 904                         if (StrUtils.StartsWith (inputFile, physPath))
 905                                 inputFile = parser.InputFile.Substring (physPath.Length - 1);
 906                         else
 907                                 return;
 908
 909                         char dsc = System.IO.Path.DirectorySeparatorChar;
 910                         if (dsc != '/')
 911                                 inputFile = inputFile.Replace (dsc, '/');
 912
 913                         object obj = HttpContext.GetLocalResourceObject (inputFile, resname);
 914                         if (obj == null)
 915                                 return;
 916
 917                         if (!isProperty && !isField)
 918                                 return; // an "impossible" case
 919
 920                         CodeAssignStatement assign = new CodeAssignStatement ();
 921
 922                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, memberName);
 923                         assign.Right = ResourceExpressionBuilder.CreateGetLocalResourceObject (mi, resname);
 924
 925                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
 926                 }
 927
 928                 void AssignPropertiesFromResources (ControlBuilder builder, Type controlType, string attvalue)
 929                 {
 930                         // Process all public fields and properties of the control. We don't use GetMembers to make the code
 931                         // faster
 932                         FieldInfo [] fields = controlType.GetFields (
 933                                 BindingFlags.Instance | BindingFlags.Static |
 934                                 BindingFlags.Public | BindingFlags.FlattenHierarchy);
 935                         PropertyInfo [] properties = controlType.GetProperties (
 936                                 BindingFlags.Instance | BindingFlags.Static |
 937                                 BindingFlags.Public | BindingFlags.FlattenHierarchy);
 938
 939                         foreach (FieldInfo fi in fields)
 940                                 AssignPropertyFromResources (builder, fi, attvalue);
 941                         foreach (PropertyInfo pi in properties)
 942                                 AssignPropertyFromResources (builder, pi, attvalue);
 943                 }
 944
 945                 void AssignPropertiesFromResources (ControlBuilder builder, string attvalue)
 946                 {
 947                         if (attvalue == null || attvalue.Length == 0)
 948                                 return;
 949
 950                         Type controlType = builder.ControlType;
 951                         if (controlType == null)
 952                                 return;
 953
 954                         AssignPropertiesFromResources (builder, controlType, attvalue);
 955                 }
 956 #endif
 957
 958                 void AddEventAssign (CodeMemberMethod method, ControlBuilder builder, string name, Type type, string value)
 959                 {
 960                         //"__ctrl.{0} += new {1} (this.{2});"
 961                         CodeEventReferenceExpression evtID = new CodeEventReferenceExpression (ctrlVar, name);
 962
 963                         CodeDelegateCreateExpression create;
 964                         create = new CodeDelegateCreateExpression (new CodeTypeReference (type), thisRef, value);
 965
 966                         CodeAttachEventStatement attach = new CodeAttachEventStatement (evtID, create);
 967                         method.Statements.Add (attach);
 968                 }
 969
 970                 void CreateAssignStatementFromAttribute (ControlBuilder builder, string id)
 971                 {
 972                         EventInfo [] ev_info = null;
 973                         Type type = builder.ControlType;
 974
 975                         string attvalue = builder.GetAttribute (id);
 976                         if (id.Length > 2 && id.Substring (0, 2).ToUpper () == "ON"){
 977                                 if (ev_info == null)
 978                                         ev_info = type.GetEvents ();
 979
 980                                 string id_as_event = id.Substring (2);
 981                                 foreach (EventInfo ev in ev_info){
 982                                         if (InvariantCompareNoCase (ev.Name, id_as_event)){
 983                                                 AddEventAssign (builder.Method,
 984                                                                 builder,
 985                                                                 ev.Name,
 986                                                                 ev.EventHandlerType,
 987                                                                 attvalue);
 988
 989                                                 return;
 990                                         }
 991                                 }
 992
 993                         }
 994
 995 #if NET_2_0
 996                         if (id.ToLower () == "meta:resourcekey") {
 997                                 AssignPropertiesFromResources (builder, attvalue);
 998                                 return;
 999                         }
1000 #endif
1001
1002                         int hyphen = id.IndexOf ('-');
1003                         string alt_id = id;
1004                         if (hyphen != -1)
1005                                 alt_id = id.Substring (0, hyphen);
1006
1007                         MemberInfo fop = GetFieldOrProperty (type, alt_id);
1008                         if (fop != null) {
1009                                 if (ProcessPropertiesAndFields (builder, fop, id, attvalue, null))
1010                                         return;
1011                         }
1012
1013                         if (!typeof (IAttributeAccessor).IsAssignableFrom (type))
1014                                 throw new ParseException (builder.Location, "Unrecognized attribute: " + id);
1015
1016                         CodeMemberMethod method = builder.Method;
1017                         bool isDatabound = IsDataBound (attvalue);
1018 #if NET_2_0
1019                         bool isExpression = !isDatabound && IsExpression (attvalue);
1020 #endif
1021
1022                         if (isDatabound) {
1023                                 string value = attvalue.Substring (3, attvalue.Length - 5).Trim ();
1024                                 CodeExpression valueExpression = null;
1025 #if NET_2_0
1026                                 if (startsWithBindRegex.Match (value).Success)
1027                                         valueExpression = CreateEvalInvokeExpression (bindRegexInValue, value, true);
1028                                 else
1029 #endif
1030                                 if (StrUtils.StartsWith (value, "Eval", true))
1031                                         valueExpression = CreateEvalInvokeExpression (evalRegexInValue, value, false);
1032
1033                                 if (valueExpression == null && value != null && value.Trim () != String.Empty)
1034                                         valueExpression = new CodeSnippetExpression (value);
1035
1036                                 CreateDBAttributeMethod (builder, id, valueExpression);
1037                         } else {
1038                                 CodeCastExpression cast;
1039                                 CodeMethodReferenceExpression methodExpr;
1040                                 CodeMethodInvokeExpression expr;
1041
1042                                 cast = new CodeCastExpression (typeof (IAttributeAccessor), ctrlVar);
1043                                 methodExpr = new CodeMethodReferenceExpression (cast, "SetAttribute");
1044                                 expr = new CodeMethodInvokeExpression (methodExpr);
1045                                 expr.Parameters.Add (new CodePrimitiveExpression (id));
1046
1047                                 CodeExpression valueExpr = null;
1048 #if NET_2_0
1049                                 if (isExpression)
1050                                         valueExpr = CompileExpression (null, typeof (string), attvalue, true);
1051
1052                                 if (valueExpr == null)
1053 #endif
1054                                         valueExpr = new CodePrimitiveExpression (attvalue);
1055
1056                                 expr.Parameters.Add (valueExpr);
1057                                 method.Statements.Add (AddLinePragma (expr, builder));
1058                         }
1059                 }
1060
1061                 protected void CreateAssignStatementsFromAttributes (ControlBuilder builder)
1062                 {
1063                         this.dataBoundAtts = 0;
1064                         IDictionary atts = builder.Attributes;
1065                         if (atts == null || atts.Count == 0)
1066                                 return;
1067
1068                         foreach (string id in atts.Keys) {
1069                                 if (InvariantCompareNoCase (id, "runat"))
1070                                         continue;
1071                                 // ID is assigned in BuildControltree
1072                                 if (InvariantCompareNoCase (id, "id"))
1073                                         continue;
1074
1075 #if NET_2_0
1076                                 /* we skip SkinID here as it's assigned in BuildControlTree */
1077                                 if (InvariantCompareNoCase (id, "skinid"))
1078                                         continue;
1079                                 if (InvariantCompareNoCase (id, "meta:resourcekey"))
1080                                         continue; // ignore, this one's processed at the very end of
1081                                                   // the method
1082 #endif
1083                                 CreateAssignStatementFromAttribute (builder, id);
1084                         }
1085                 }
1086
1087                 void CreateDBAttributeMethod (ControlBuilder builder, string attr, CodeExpression code)
1088                 {
1089                         if (code == null)
1090                                 return;
1091
1092                         string id = builder.GetNextID (null);
1093                         string dbMethodName = "__DataBind_" + id;
1094                         CodeMemberMethod method = builder.Method;
1095                         AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
1096
1097                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), builder.ControlType);
1098 #if NET_2_0
1099                         builder.DataBindingMethod = method;
1100 #endif
1101                         CodeCastExpression cast;
1102                         CodeMethodReferenceExpression methodExpr;
1103                         CodeMethodInvokeExpression expr;
1104
1105                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1106                         cast = new CodeCastExpression (typeof (IAttributeAccessor), targetExpr);
1107                         methodExpr = new CodeMethodReferenceExpression (cast, "SetAttribute");
1108                         expr = new CodeMethodInvokeExpression (methodExpr);
1109                         expr.Parameters.Add (new CodePrimitiveExpression (attr));
1110                         CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
1111                         tostring.Method = new CodeMethodReferenceExpression (
1112                                                         new CodeTypeReferenceExpression (typeof (Convert)),
1113                                                         "ToString");
1114                         tostring.Parameters.Add (code);
1115                         expr.Parameters.Add (tostring);
1116                         method.Statements.Add (expr);
1117                         mainClass.Members.Add (method);
1118                 }
1119
1120                 void AddRenderControl (ControlBuilder builder)
1121                 {
1122                         CodeIndexerExpression indexer = new CodeIndexerExpression ();
1123                         indexer.TargetObject = new CodePropertyReferenceExpression (
1124                                                         new CodeArgumentReferenceExpression ("parameterContainer"),
1125                                                         "Controls");
1126
1127                         indexer.Indices.Add (new CodePrimitiveExpression (builder.RenderIndex));
1128
1129                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (indexer, "RenderControl");
1130                         invoke.Parameters.Add (new CodeArgumentReferenceExpression ("__output"));
1131                         builder.RenderMethod.Statements.Add (invoke);
1132                         builder.IncreaseRenderIndex ();
1133                 }
1134
1135                 protected void AddChildCall (ControlBuilder parent, ControlBuilder child)
1136                 {
1137                         if (parent == null || child == null)
1138                                 return;
1139
1140                         CodeMethodReferenceExpression m = new CodeMethodReferenceExpression (thisRef, child.Method.Name);
1141                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (m);
1142
1143                         object [] atts = null;
1144
1145                         if (child.ControlType != null)
1146                                 atts = child.ControlType.GetCustomAttributes (typeof (PartialCachingAttribute), true);
1147
1148                         if (atts != null && atts.Length > 0) {
1149                                 PartialCachingAttribute pca = (PartialCachingAttribute) atts [0];
1150                                 CodeTypeReferenceExpression cc = new CodeTypeReferenceExpression("System.Web.UI.StaticPartialCachingControl");
1151                                 CodeMethodInvokeExpression build = new CodeMethodInvokeExpression (cc, "BuildCachedControl");
1152                                 build.Parameters.Add (new CodeArgumentReferenceExpression("__ctrl"));
1153                                 build.Parameters.Add (new CodePrimitiveExpression (child.ID));
1154 #if NET_1_1
1155                                 if (pca.Shared)
1156                                         build.Parameters.Add (new CodePrimitiveExpression (child.ControlType.GetHashCode ().ToString ()));
1157                                 else
1158 #endif
1159                                         build.Parameters.Add (new CodePrimitiveExpression (Guid.NewGuid ().ToString ()));
1160
1161                                 build.Parameters.Add (new CodePrimitiveExpression (pca.Duration));
1162                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByParams));
1163                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByControls));
1164                                 build.Parameters.Add (new CodePrimitiveExpression (pca.VaryByCustom));
1165                                 build.Parameters.Add (new CodeDelegateCreateExpression (
1166                                                               new CodeTypeReference (typeof (System.Web.UI.BuildMethod)),
1167                                                               thisRef, child.Method.Name));
1168
1169                                 parent.MethodStatements.Add (AddLinePragma (build, parent));
1170                                 if (parent.HasAspCode)
1171                                         AddRenderControl (parent);
1172                                 return;
1173                         }
1174
1175                         if (child.IsProperty || parent.ChildrenAsProperties) {
1176                                 expr.Parameters.Add (new CodeFieldReferenceExpression (ctrlVar, child.TagName));
1177                                 parent.MethodStatements.Add (AddLinePragma (expr, parent));
1178                                 return;
1179                         }
1180
1181                         parent.MethodStatements.Add (AddLinePragma (expr, parent));
1182                         CodeFieldReferenceExpression field = new CodeFieldReferenceExpression (thisRef, child.ID);
1183                         if (parent.ControlType == null || typeof (IParserAccessor).IsAssignableFrom (parent.ControlType))
1184                                 AddParsedSubObjectStmt (parent, field);
1185                         else {
1186                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (ctrlVar, "Add");
1187                                 invoke.Parameters.Add (field);
1188                                 parent.MethodStatements.Add (AddLinePragma (invoke, parent));
1189                         }
1190
1191                         if (parent.HasAspCode)
1192                                 AddRenderControl (parent);
1193                 }
1194
1195                 void AddTemplateInvocation (ControlBuilder builder, string name, string methodName)
1196                 {
1197                         CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression (ctrlVar, name);
1198
1199                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1200                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1201
1202                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledTemplateBuilder));
1203                         newCompiled.Parameters.Add (newBuild);
1204
1205                         CodeAssignStatement assign = new CodeAssignStatement (prop, newCompiled);
1206                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
1207                 }
1208
1209 #if NET_2_0
1210                 void AddBindableTemplateInvocation (ControlBuilder builder, string name, string methodName, string extractMethodName)
1211                 {
1212                         CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression (ctrlVar, name);
1213
1214                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1215                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1216
1217                         CodeDelegateCreateExpression newExtract = new CodeDelegateCreateExpression (
1218                                 new CodeTypeReference (typeof (ExtractTemplateValuesMethod)), thisRef, extractMethodName);
1219
1220                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledBindableTemplateBuilder));
1221                         newCompiled.Parameters.Add (newBuild);
1222                         newCompiled.Parameters.Add (newExtract);
1223
1224                         CodeAssignStatement assign = new CodeAssignStatement (prop, newCompiled);
1225                         builder.Method.Statements.Add (AddLinePragma (assign, builder));
1226                 }
1227
1228                 string CreateExtractValuesMethod (TemplateBuilder builder)
1229                 {
1230                         CodeMemberMethod method = new CodeMemberMethod ();
1231                         method.Name = "__ExtractValues_" + builder.ID;
1232                         method.Attributes = MemberAttributes.Private | MemberAttributes.Final;
1233                         method.ReturnType = new CodeTypeReference (typeof(IOrderedDictionary));
1234
1235                         CodeParameterDeclarationExpression arg = new CodeParameterDeclarationExpression ();
1236                         arg.Type = new CodeTypeReference (typeof (Control));
1237                         arg.Name = "__container";
1238                         method.Parameters.Add (arg);
1239                         mainClass.Members.Add (method);
1240
1241                         CodeObjectCreateExpression newTable = new CodeObjectCreateExpression ();
1242                         newTable.CreateType = new CodeTypeReference (typeof(OrderedDictionary));
1243                         method.Statements.Add (new CodeVariableDeclarationStatement (typeof(OrderedDictionary), "__table", newTable));
1244                         CodeVariableReferenceExpression tableExp = new CodeVariableReferenceExpression ("__table");
1245
1246                         if (builder.Bindings != null) {
1247                                 Hashtable hash = new Hashtable ();
1248                                 foreach (TemplateBinding binding in builder.Bindings) {
1249                                         CodeConditionStatement sif;
1250                                         CodeVariableReferenceExpression control;
1251                                         CodeAssignStatement assign;
1252
1253                                         if (hash [binding.ControlId] == null) {
1254
1255                                                 CodeVariableDeclarationStatement dec = new CodeVariableDeclarationStatement (binding.ControlType, binding.ControlId);
1256                                                 method.Statements.Add (dec);
1257                                                 CodeVariableReferenceExpression cter = new CodeVariableReferenceExpression ("__container");
1258                                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (cter, "FindControl");
1259                                                 invoke.Parameters.Add (new CodePrimitiveExpression (binding.ControlId));
1260
1261                                                 assign = new CodeAssignStatement ();
1262                                                 control = new CodeVariableReferenceExpression (binding.ControlId);
1263                                                 assign.Left = control;
1264                                                 assign.Right = new CodeCastExpression (binding.ControlType, invoke);
1265                                                 method.Statements.Add (assign);
1266
1267                                                 sif = new CodeConditionStatement ();
1268                                                 sif.Condition = new CodeBinaryOperatorExpression (control, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression (null));
1269
1270                                                 method.Statements.Add (sif);
1271
1272                                                 hash [binding.ControlId] = sif;
1273                                         }
1274
1275                                         sif = (CodeConditionStatement) hash [binding.ControlId];
1276                                         control = new CodeVariableReferenceExpression (binding.ControlId);
1277                                         assign = new CodeAssignStatement ();
1278                                         assign.Left = new CodeIndexerExpression (tableExp, new CodePrimitiveExpression (binding.FieldName));
1279                                         assign.Right = new CodePropertyReferenceExpression (control, binding.ControlProperty);
1280                                         sif.TrueStatements.Add (assign);
1281                                 }
1282                         }
1283
1284                         method.Statements.Add (new CodeMethodReturnStatement (tableExp));
1285                         return method.Name;
1286                 }
1287
1288                 void AddContentTemplateInvocation (ContentBuilderInternal cbuilder, CodeMemberMethod method, string methodName)
1289                 {
1290                         CodeDelegateCreateExpression newBuild = new CodeDelegateCreateExpression (
1291                                 new CodeTypeReference (typeof (BuildTemplateMethod)), thisRef, methodName);
1292
1293                         CodeObjectCreateExpression newCompiled = new CodeObjectCreateExpression (typeof (CompiledTemplateBuilder));
1294                         newCompiled.Parameters.Add (newBuild);
1295
1296                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (thisRef, "AddContentTemplate");
1297                         invoke.Parameters.Add (new CodePrimitiveExpression (cbuilder.ContentPlaceHolderID));
1298                         invoke.Parameters.Add (newCompiled);
1299
1300                         method.Statements.Add (AddLinePragma (invoke, cbuilder));
1301                 }
1302 #endif
1303
1304                 void AddCodeRender (ControlBuilder parent, CodeRenderBuilder cr)
1305                 {
1306                         if (cr.Code == null || cr.Code.Trim () == "")
1307                                 return;
1308
1309                         if (!cr.IsAssign) {
1310                                 CodeSnippetStatement code = new CodeSnippetStatement (cr.Code);
1311                                 parent.RenderMethod.Statements.Add (AddLinePragma (code, cr));
1312                                 return;
1313                         }
1314
1315                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression ();
1316                         expr.Method = new CodeMethodReferenceExpression (
1317                                                         new CodeArgumentReferenceExpression ("__output"),
1318                                                         "Write");
1319
1320                         expr.Parameters.Add (new CodeSnippetExpression (cr.Code));
1321                         parent.RenderMethod.Statements.Add (AddLinePragma (expr, cr));
1322                 }
1323
1324 #if !NET_2_0
1325                 static PropertyInfo GetContainerProperty (Type type, string[] propNames)
1326                 {
1327                         PropertyInfo prop;
1328
1329                         foreach (string name in propNames) {
1330                                 prop = type.GetProperty (name, noCaseFlags & ~BindingFlags.NonPublic);
1331                                 if (prop != null)
1332                                         return prop;
1333                         }
1334
1335                         return null;
1336                 }
1337
1338                 static string[] containerPropNames = {"Items", "Rows"};
1339 #endif
1340
1341                 static Type GetContainerType (ControlBuilder builder)
1342                 {
1343                         Type type = builder.BindingContainerType;
1344
1345 #if NET_2_0
1346                         return type;
1347 #else
1348
1349                         PropertyInfo prop = GetContainerProperty (type, containerPropNames);
1350                         if (prop == null)
1351                                 return type;
1352
1353                         Type ptype = prop.PropertyType;
1354                         if (!typeof (ICollection).IsAssignableFrom (ptype))
1355                                 return type;
1356
1357                         prop = ptype.GetProperty ("Item", noCaseFlags & ~BindingFlags.NonPublic);
1358                         if (prop == null)
1359                                 return type;
1360
1361                         return prop.PropertyType;
1362 #endif
1363                 }
1364
1365                 CodeMemberMethod CreateDBMethod (ControlBuilder builder, string name, Type container, Type target)
1366                 {
1367                         CodeMemberMethod method = new CodeMemberMethod ();
1368                         method.Attributes = MemberAttributes.Public | MemberAttributes.Final;
1369                         method.Name = name;
1370                         method.Parameters.Add (new CodeParameterDeclarationExpression (typeof (object), "sender"));
1371                         method.Parameters.Add (new CodeParameterDeclarationExpression (typeof (EventArgs), "e"));
1372
1373                         CodeTypeReference containerRef = new CodeTypeReference (container);
1374                         CodeTypeReference targetRef = new CodeTypeReference (target);
1375
1376                         CodeVariableDeclarationStatement decl = new CodeVariableDeclarationStatement();
1377                         decl.Name = "Container";
1378                         decl.Type = containerRef;
1379                         method.Statements.Add (decl);
1380
1381                         decl = new CodeVariableDeclarationStatement();
1382                         decl.Name = "target";
1383                         decl.Type = targetRef;
1384                         method.Statements.Add (decl);
1385
1386                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1387                         CodeAssignStatement assign = new CodeAssignStatement ();
1388                         assign.Left = targetExpr;
1389                         assign.Right = new CodeCastExpression (targetRef, new CodeArgumentReferenceExpression ("sender"));
1390                         method.Statements.Add (AddLinePragma (assign, builder));
1391
1392                         assign = new CodeAssignStatement ();
1393                         assign.Left = new CodeVariableReferenceExpression ("Container");
1394                         assign.Right = new CodeCastExpression (containerRef,
1395                                                 new CodePropertyReferenceExpression (targetExpr, "BindingContainer"));
1396                         method.Statements.Add (AddLinePragma (assign, builder));
1397
1398                         return method;
1399                 }
1400
1401                 void AddDataBindingLiteral (ControlBuilder builder, DataBindingBuilder db)
1402                 {
1403                         if (db.Code == null || db.Code.Trim () == "")
1404                                 return;
1405
1406                         EnsureID (db);
1407                         CreateField (db, false);
1408
1409                         string dbMethodName = "__DataBind_" + db.ID;
1410                         // Add the method that builds the DataBoundLiteralControl
1411                         InitMethod (db, false, false);
1412                         CodeMemberMethod method = db.Method;
1413                         AddEventAssign (method, builder, "DataBinding", typeof (EventHandler), dbMethodName);
1414                         method.Statements.Add (new CodeMethodReturnStatement (ctrlVar));
1415
1416                         // Add the DataBind handler
1417                         method = CreateDBMethod (builder, dbMethodName, GetContainerType (builder), typeof (DataBoundLiteralControl));
1418 #if NET_2_0
1419                         builder.DataBindingMethod = method;
1420 #endif
1421                         CodeVariableReferenceExpression targetExpr = new CodeVariableReferenceExpression ("target");
1422                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression ();
1423                         invoke.Method = new CodeMethodReferenceExpression (targetExpr, "SetDataBoundString");
1424                         invoke.Parameters.Add (new CodePrimitiveExpression (0));
1425
1426                         CodeMethodInvokeExpression tostring = new CodeMethodInvokeExpression ();
1427                         tostring.Method = new CodeMethodReferenceExpression (
1428                                                         new CodeTypeReferenceExpression (typeof (Convert)),
1429                                                         "ToString");
1430                         tostring.Parameters.Add (new CodeSnippetExpression (db.Code));
1431                         invoke.Parameters.Add (tostring);
1432                         method.Statements.Add (AddLinePragma (invoke, builder));
1433
1434                         mainClass.Members.Add (method);
1435
1436                         AddChildCall (builder, db);
1437                 }
1438
1439                 void FlushText (ControlBuilder builder, StringBuilder sb)
1440                 {
1441                         if (sb.Length > 0) {
1442                                 AddLiteralSubObject (builder, sb.ToString ());
1443                                 sb.Length = 0;
1444                         }
1445                 }
1446
1447                 protected void CreateControlTree (ControlBuilder builder, bool inTemplate, bool childrenAsProperties)
1448                 {
1449                         EnsureID (builder);
1450                         bool isTemplate = (typeof (TemplateBuilder).IsAssignableFrom (builder.GetType ()));
1451
1452                         if (!isTemplate && !inTemplate) {
1453                                 CreateField (builder, true);
1454                         } else if (!isTemplate) {
1455                                 bool doCheck = false;
1456
1457 #if NET_2_0
1458                                 bool singleInstance = false;
1459                                 ControlBuilder pb = builder.ParentBuilder;
1460                                 TemplateBuilder tpb;
1461                                 while (pb != null) {
1462                                         tpb = pb as TemplateBuilder;
1463                                         if (tpb == null) {
1464                                                 pb = pb.ParentBuilder;
1465                                                 continue;
1466                                         }
1467
1468                                         if (tpb.TemplateInstance == TemplateInstance.Single)
1469                                                 singleInstance = true;
1470                                         break;
1471                                 }
1472
1473                                 if (!singleInstance)
1474 #endif
1475                                         builder.ID = builder.GetNextID (null);
1476 #if NET_2_0
1477                                 else
1478                                         doCheck = true;
1479 #endif
1480                                 CreateField (builder, doCheck);
1481                         }
1482
1483                         InitMethod (builder, isTemplate, childrenAsProperties);
1484                         if (!isTemplate || builder.GetType () == typeof (RootBuilder))
1485                                 CreateAssignStatementsFromAttributes (builder);
1486
1487                         if (builder.Children != null && builder.Children.Count > 0) {
1488                                 StringBuilder sb = new StringBuilder ();
1489                                 foreach (object b in builder.Children) {
1490                                         if (b is string) {
1491                                                 sb.Append ((string) b);
1492                                                 continue;
1493                                         }
1494
1495                                         FlushText (builder, sb);
1496                                         if (b is ObjectTagBuilder) {
1497                                                 ProcessObjectTag ((ObjectTagBuilder) b);
1498                                         } else if (b is StringPropertyBuilder) {
1499                                                 StringPropertyBuilder pb = b as StringPropertyBuilder;
1500                                                 if (pb.Children != null && pb.Children.Count > 0) {
1501                                                         StringBuilder asb = new StringBuilder ();
1502                                                         foreach (string s in pb.Children)
1503                                                                 asb.Append (s);
1504                                                         CodeMemberMethod method = builder.Method;
1505                                                         CodeAssignStatement assign = new CodeAssignStatement ();
1506                                                         assign.Left = new CodePropertyReferenceExpression (ctrlVar, pb.PropertyName);
1507                                                         assign.Right = new CodePrimitiveExpression (asb.ToString ());
1508                                                         method.Statements.Add (AddLinePragma (assign, builder));
1509                                                 }
1510                                         }
1511 #if NET_2_0
1512                                         else if (b is ContentBuilderInternal) {
1513                                                 ContentBuilderInternal cb = (ContentBuilderInternal) b;
1514                                                 CreateControlTree (cb, false, true);
1515                                                 AddContentTemplateInvocation (cb, builder.Method, cb.Method.Name);
1516                                                 continue;
1517                                         }
1518 #endif
1519                                         // Ignore TemplateBuilders - they are processed in InitMethod
1520                                         else if (b is TemplateBuilder) {
1521                                         } else if (b is CodeRenderBuilder) {
1522                                                 AddCodeRender (builder, (CodeRenderBuilder) b);
1523                                         } else if (b is DataBindingBuilder) {
1524                                                 AddDataBindingLiteral (builder, (DataBindingBuilder) b);
1525                                         } else if (b is ControlBuilder) {
1526                                                 ControlBuilder child = (ControlBuilder) b;
1527                                                 CreateControlTree (child, inTemplate, builder.ChildrenAsProperties);
1528                                                 AddChildCall (builder, child);
1529                                                 continue;
1530                                         } else
1531                                                 throw new Exception ("???");
1532
1533 #if NET_2_0
1534                                         ControlBuilder bldr = b as ControlBuilder;
1535                                         bldr.ProcessGeneratedCode (CompileUnit, BaseType, DerivedType, bldr.Method, bldr.DataBindingMethod);
1536 #endif
1537                                 }
1538
1539                                 FlushText (builder, sb);
1540                         }
1541
1542                         ControlBuilder defaultPropertyBuilder = builder.DefaultPropertyBuilder;
1543                         if (defaultPropertyBuilder != null) {
1544                                 CreateControlTree (defaultPropertyBuilder, false, true);
1545                                 AddChildCall (builder, defaultPropertyBuilder);
1546                         }
1547
1548                         if (builder.HasAspCode) {
1549                                 CodeMemberMethod renderMethod = builder.RenderMethod;
1550                                 CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
1551                                 m.TargetObject = thisRef;
1552                                 m.MethodName = renderMethod.Name;
1553
1554                                 CodeDelegateCreateExpression create = new CodeDelegateCreateExpression ();
1555                                 create.DelegateType = new CodeTypeReference (typeof (RenderMethod));
1556                                 create.TargetObject = thisRef;
1557                                 create.MethodName = renderMethod.Name;
1558
1559                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression ();
1560                                 invoke.Method = new CodeMethodReferenceExpression (ctrlVar, "SetRenderMethodDelegate");
1561                                 invoke.Parameters.Add (create);
1562
1563                                 builder.MethodStatements.Add (invoke);
1564                         }
1565
1566 #if NET_2_0
1567                         if (builder is RootBuilder)
1568                                 if (!String.IsNullOrEmpty (parser.MetaResourceKey))
1569                                         AssignPropertiesFromResources (builder, parser.BaseType, parser.MetaResourceKey);
1570
1571                         if ((!isTemplate || builder is RootBuilder) && !String.IsNullOrEmpty (builder.GetAttribute ("meta:resourcekey")))
1572                                 CreateAssignStatementFromAttribute (builder, "meta:resourcekey");
1573 #endif
1574
1575                         if (!childrenAsProperties && typeof (Control).IsAssignableFrom (builder.ControlType))
1576                                 builder.Method.Statements.Add (new CodeMethodReturnStatement (ctrlVar));
1577
1578 #if NET_2_0
1579                         builder.ProcessGeneratedCode (CompileUnit, BaseType, DerivedType, builder.Method, builder.DataBindingMethod);
1580 #endif
1581                 }
1582
1583 #if NET_2_0
1584                 protected override void AddStatementsToConstructor (CodeConstructor ctor)
1585                 {
1586                         if (masterPageContentPlaceHolders == null || masterPageContentPlaceHolders.Count == 0)
1587                                 return;
1588
1589                         var ilist = new CodeVariableDeclarationStatement ();
1590                         ilist.Name = "__contentPlaceHolders";
1591                         ilist.Type = new CodeTypeReference (typeof (IList));
1592                         ilist.InitExpression = new CodePropertyReferenceExpression (thisRef, "ContentPlaceHolders");
1593
1594                         var ilistRef = new CodeVariableReferenceExpression ("__contentPlaceHolders");
1595                         CodeStatementCollection statements = ctor.Statements;
1596                         statements.Add (ilist);
1597
1598                         CodeMethodInvokeExpression mcall;
1599                         foreach (string id in masterPageContentPlaceHolders) {
1600                                 mcall = new CodeMethodInvokeExpression (ilistRef, "Add");
1601                                 mcall.Parameters.Add (new CodePrimitiveExpression (id.ToLowerInvariant ()));
1602                                 statements.Add (mcall);
1603                         }
1604                 }
1605 #endif
1606
1607                 protected internal override void CreateMethods ()
1608                 {
1609                         base.CreateMethods ();
1610
1611                         CreateProperties ();
1612                         CreateControlTree (parser.RootBuilder, false, false);
1613                         CreateFrameworkInitializeMethod ();
1614                 }
1615
1616 #if NET_2_0
1617                 protected override void InitializeType ()
1618                 {
1619                         List <string> registeredTagNames = parser.RegisteredTagNames;
1620                         RootBuilder rb = parser.RootBuilder;
1621                         if (rb == null || registeredTagNames == null || registeredTagNames.Count == 0)
1622                                 return;
1623
1624                         AspComponent component;
1625                         foreach (string tagName in registeredTagNames) {
1626                                 component = rb.Foundry.GetComponent (tagName);
1627                                 if (component == null || component.Type == null) // unlikely
1628                                         throw new HttpException ("Custom control '" + tagName + "' cannot be found.");
1629                                 if (!(typeof (UserControl).IsAssignableFrom (component.Type)))
1630                                         throw new ParseException (parser.Location, "Type '" + component.Type.ToString () + "' does not derive from 'System.Web.UI.UserControl'.");
1631                                 AddReferencedAssembly (component.Type.Assembly);
1632                         }
1633                 }
1634
1635                 void CallBaseFrameworkInitialize (CodeMemberMethod method)
1636                 {
1637                         CodeBaseReferenceExpression baseRef = new CodeBaseReferenceExpression ();
1638                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (baseRef, "FrameworkInitialize");
1639                         method.Statements.Add (invoke);
1640                 }
1641 #endif
1642
1643                 void CallSetStringResourcePointer (CodeMemberMethod method)
1644                 {
1645                         CodeFieldReferenceExpression stringResource = GetMainClassFieldReferenceExpression ("__stringResource");
1646                         method.Statements.Add (
1647                                 new CodeMethodInvokeExpression (
1648                                         thisRef,
1649                                         "SetStringResourcePointer",
1650                                         new CodeExpression[] {stringResource, new CodePrimitiveExpression (0)})
1651                         );
1652                 }
1653
1654                 void CreateFrameworkInitializeMethod ()
1655                 {
1656                         CodeMemberMethod method = new CodeMemberMethod ();
1657                         method.Name = "FrameworkInitialize";
1658                         method.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1659                         PrependStatementsToFrameworkInitialize (method);
1660 #if NET_2_0
1661                         CallBaseFrameworkInitialize (method);
1662 #endif
1663                         CallSetStringResourcePointer (method);
1664                         AppendStatementsToFrameworkInitialize (method);
1665                         mainClass.Members.Add (method);
1666                 }
1667
1668                 protected virtual void PrependStatementsToFrameworkInitialize (CodeMemberMethod method)
1669                 {
1670                 }
1671
1672                 protected virtual void AppendStatementsToFrameworkInitialize (CodeMemberMethod method)
1673                 {
1674                         if (!parser.EnableViewState) {
1675                                 CodeAssignStatement stmt = new CodeAssignStatement ();
1676                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "EnableViewState");
1677                                 stmt.Right = new CodePrimitiveExpression (false);
1678                                 method.Statements.Add (stmt);
1679                         }
1680
1681                         CodeMethodReferenceExpression methodExpr;
1682                         methodExpr = new CodeMethodReferenceExpression (thisRef, "__BuildControlTree");
1683                         CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression (methodExpr, thisRef);
1684                         method.Statements.Add (new CodeExpressionStatement (expr));
1685                 }
1686
1687                 protected override void AddApplicationAndSessionObjects ()
1688                 {
1689                         foreach (ObjectTagBuilder tag in GlobalAsaxCompiler.ApplicationObjects) {
1690                                 CreateFieldForObject (tag.Type, tag.ObjectID);
1691                                 CreateApplicationOrSessionPropertyForObject (tag.Type, tag.ObjectID, true, false);
1692                         }
1693
1694                         foreach (ObjectTagBuilder tag in GlobalAsaxCompiler.SessionObjects) {
1695                                 CreateApplicationOrSessionPropertyForObject (tag.Type, tag.ObjectID, false, false);
1696                         }
1697                 }
1698
1699                 protected override void CreateStaticFields ()
1700                 {
1701                         base.CreateStaticFields ();
1702
1703                         CodeMemberField fld = new CodeMemberField (typeof (object), "__stringResource");
1704                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
1705                         fld.InitExpression = new CodePrimitiveExpression (null);
1706                         mainClass.Members.Add (fld);
1707                 }
1708
1709                 protected void ProcessObjectTag (ObjectTagBuilder tag)
1710                 {
1711                         string fieldName = CreateFieldForObject (tag.Type, tag.ObjectID);
1712                         CreatePropertyForObject (tag.Type, tag.ObjectID, fieldName, false);
1713                 }
1714
1715                 void CreateProperties ()
1716                 {
1717                         if (!parser.AutoEventWireup) {
1718                                 CreateAutoEventWireup ();
1719                         } else {
1720                                 CreateAutoHandlers ();
1721                         }
1722
1723                         CreateApplicationInstance ();
1724                 }
1725
1726                 void CreateApplicationInstance ()
1727                 {
1728                         CodeMemberProperty prop = new CodeMemberProperty ();
1729                         Type appType = typeof (HttpApplication);
1730                         prop.Type = new CodeTypeReference (appType);
1731                         prop.Name = "ApplicationInstance";
1732                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Final;
1733
1734                         CodePropertyReferenceExpression propRef = new CodePropertyReferenceExpression (thisRef, "Context");
1735
1736                         propRef = new CodePropertyReferenceExpression (propRef, "ApplicationInstance");
1737
1738                         CodeCastExpression cast = new CodeCastExpression (appType.FullName, propRef);
1739                         prop.GetStatements.Add (new CodeMethodReturnStatement (cast));
1740 #if NET_2_0
1741                         if (partialClass != null)
1742                                 partialClass.Members.Add (prop);
1743                         else
1744 #endif
1745                         mainClass.Members.Add (prop);
1746                 }
1747
1748 #if NET_2_0
1749                 void CreateContentPlaceHolderTemplateProperty (string backingField, string name)
1750                 {
1751                         CodeMemberProperty prop = new CodeMemberProperty ();
1752                         prop.Type = new CodeTypeReference (typeof (ITemplate));
1753                         prop.Name = name;
1754                         prop.Attributes = MemberAttributes.Public;
1755
1756                         var ret = new CodeMethodReturnStatement ();
1757                         var fldRef = new CodeFieldReferenceExpression (thisRef, backingField);
1758                         ret.Expression = fldRef;
1759                         prop.GetStatements.Add (ret);
1760                         prop.SetStatements.Add (new CodeAssignStatement (fldRef, new CodePropertySetValueReferenceExpression ()));
1761
1762                         prop.CustomAttributes.Add (new CodeAttributeDeclaration ("TemplateContainer", new CodeAttributeArgument [] {
1763                                                 new CodeAttributeArgument (new CodeTypeOfExpression (new CodeTypeReference (typeof (MasterPage))))
1764                                         }
1765                                 )
1766                         );
1767
1768                         var enumValueRef = new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (typeof (TemplateInstance)), "Single");
1769                         prop.CustomAttributes.Add (new CodeAttributeDeclaration ("TemplateInstanceAttribute", new CodeAttributeArgument [] {
1770                                                 new CodeAttributeArgument (enumValueRef)
1771                                         }
1772                                 )
1773                         );
1774
1775                         mainClass.Members.Add (prop);
1776                 }
1777 #endif
1778
1779                 void CreateAutoHandlers ()
1780                 {
1781                         // Create AutoHandlers property
1782                         CodeMemberProperty prop = new CodeMemberProperty ();
1783                         prop.Type = new CodeTypeReference (typeof (int));
1784                         prop.Name = "AutoHandlers";
1785                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1786
1787                         CodeMethodReturnStatement ret = new CodeMethodReturnStatement ();
1788                         CodeFieldReferenceExpression fldRef ;
1789                         fldRef = new CodeFieldReferenceExpression (mainClassExpr, "__autoHandlers");
1790                         ret.Expression = fldRef;
1791                         prop.GetStatements.Add (ret);
1792                         prop.SetStatements.Add (new CodeAssignStatement (fldRef, new CodePropertySetValueReferenceExpression ()));
1793
1794 #if NET_2_0
1795                         CodeAttributeDeclaration attr = new CodeAttributeDeclaration ("System.Obsolete");
1796                         prop.CustomAttributes.Add (attr);
1797 #endif
1798
1799                         mainClass.Members.Add (prop);
1800
1801                         // Add the __autoHandlers field
1802                         CodeMemberField fld = new CodeMemberField (typeof (int), "__autoHandlers");
1803                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
1804                         mainClass.Members.Add (fld);
1805                 }
1806
1807                 void CreateAutoEventWireup ()
1808                 {
1809                         // The getter returns false
1810                         CodeMemberProperty prop = new CodeMemberProperty ();
1811                         prop.Type = new CodeTypeReference (typeof (bool));
1812                         prop.Name = "SupportAutoEvents";
1813                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
1814                         prop.GetStatements.Add (new CodeMethodReturnStatement (new CodePrimitiveExpression (false)));
1815                         mainClass.Members.Add (prop);
1816                 }
1817
1818 #if NET_2_0
1819                 protected virtual string HandleUrlProperty (string str, MemberInfo member)
1820                 {
1821                         return str;
1822                 }
1823 #endif
1824
1825                 TypeConverter GetConverterForMember (MemberInfo member)
1826                 {
1827                         TypeConverterAttribute tca = null;
1828                         object[] attrs;
1829
1830 #if NET_2_0
1831                         attrs = member.GetCustomAttributes (typeof (TypeConverterAttribute), true);
1832                         if (attrs.Length > 0)
1833                                 tca = attrs [0] as TypeConverterAttribute;
1834 #else
1835                         attrs = member.GetCustomAttributes (true);
1836
1837                         foreach (object attr in attrs) {
1838                                 tca = attr as TypeConverterAttribute;
1839
1840                                 if (tca != null)
1841                                         break;
1842                         }
1843 #endif
1844
1845                         if (tca == TypeConverterAttribute.Default)
1846                                 tca = null;
1847
1848                         if (tca == null)
1849                                 return null;
1850
1851                         string typeName = tca.ConverterTypeName;
1852                         if (typeName == null || typeName.Length == 0)
1853                                 return null;
1854
1855                         Type t = null;
1856                         try {
1857                                 t = HttpApplication.LoadType (typeName);
1858                         } catch (Exception) {
1859                                 // ignore
1860                         }
1861
1862                         if (t == null)
1863                                 return null;
1864
1865                         return (TypeConverter) Activator.CreateInstance (t);
1866                 }
1867
1868                 CodeExpression CreateNullableExpression (Type type, CodeExpression inst, bool nullable)
1869                 {
1870 #if NET_2_0
1871                         if (!nullable)
1872                                 return inst;
1873
1874                         return new CodeObjectCreateExpression (
1875                                 type,
1876                                 new CodeExpression[] {inst}
1877                         );
1878 #else
1879                         return inst;
1880 #endif
1881                 }
1882
1883                 bool SafeCanConvertFrom (Type type, TypeConverter cvt)
1884                 {
1885                         try {
1886                                 return cvt.CanConvertFrom (type);
1887                         } catch (NotImplementedException) {
1888                                 return false;
1889                         }
1890                 }
1891
1892                 bool SafeCanConvertTo (Type type, TypeConverter cvt)
1893                 {
1894                         try {
1895                                 return cvt.CanConvertTo (type);
1896                         } catch (NotImplementedException) {
1897                                 return false;
1898                         }
1899                 }
1900
1901                 CodeExpression GetExpressionFromString (Type type, string str, MemberInfo member)
1902                 {
1903                         TypeConverter cvt = GetConverterForMember (member);
1904                         if (cvt != null && !SafeCanConvertFrom (typeof (string), cvt))
1905                                 cvt = null;
1906
1907                         object convertedFromAttr = null;
1908                         bool preConverted = false;
1909                         if (cvt != null && str != null) {
1910                                 convertedFromAttr = cvt.ConvertFromInvariantString (str);
1911                                 if (convertedFromAttr != null) {
1912                                         type = convertedFromAttr.GetType ();
1913                                         preConverted = true;
1914                                 }
1915                         }
1916
1917                         bool wasNullable = false;
1918                         Type originalType = type;
1919 #if NET_2_0
1920                         if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>)) {
1921                                 Type[] types = type.GetGenericArguments();
1922                                 originalType = type;
1923                                 type = types[0]; // we're interested only in the first type here
1924                                 wasNullable = true;
1925                         }
1926 #endif
1927                         if (type == typeof (string)) {
1928                                 if (preConverted)
1929                                         return CreateNullableExpression (originalType,
1930                                                                          new CodePrimitiveExpression ((string) convertedFromAttr),
1931                                                                          wasNullable);
1932
1933 #if NET_2_0
1934                                 object[] urlAttr = member.GetCustomAttributes (typeof (UrlPropertyAttribute), true);
1935                                 if (urlAttr.Length != 0)
1936                                         str = HandleUrlProperty (str, member);
1937 #endif
1938                                 return CreateNullableExpression (originalType, new CodePrimitiveExpression (str), wasNullable);
1939                         } else if (type == typeof (bool)) {
1940                                 if (preConverted)
1941                                         return CreateNullableExpression (originalType,
1942                                                                          new CodePrimitiveExpression ((bool) convertedFromAttr),
1943                                                                          wasNullable);
1944
1945                                 if (str == null || str == "" || InvariantCompareNoCase (str, "true"))
1946                                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (true), wasNullable);
1947                                 else if (InvariantCompareNoCase (str, "false"))
1948                                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (false), wasNullable);
1949 #if NET_2_0
1950                                 else if (wasNullable && InvariantCompareNoCase(str, "null"))
1951                                         return new CodePrimitiveExpression (null);
1952 #endif
1953                                 else
1954                                         throw new ParseException (currentLocation,
1955                                                         "Value '" + str  + "' is not a valid boolean.");
1956                         } else if (type == monoTypeType)
1957                                 type = typeof (System.Type);
1958
1959                         if (str == null)
1960                                 return new CodePrimitiveExpression (null);
1961
1962                         if (type.IsPrimitive)
1963                                 return CreateNullableExpression (originalType,
1964                                                                  new CodePrimitiveExpression (
1965                                                                          Convert.ChangeType (preConverted ? convertedFromAttr : str,
1966                                                                                              type, CultureInfo.InvariantCulture)),
1967                                                                  wasNullable);
1968
1969                         if (type == typeof (string [])) {
1970                                 string [] subs;
1971
1972                                 if (preConverted)
1973                                         subs = (string[])convertedFromAttr;
1974                                 else
1975                                         subs = str.Split (',');
1976                                 CodeArrayCreateExpression expr = new CodeArrayCreateExpression ();
1977                                 expr.CreateType = new CodeTypeReference (typeof (string));
1978                                 foreach (string v in subs)
1979                                         expr.Initializers.Add (new CodePrimitiveExpression (v.Trim ()));
1980
1981                                 return CreateNullableExpression (originalType, expr, wasNullable);
1982                         }
1983
1984                         if (type == typeof (Color)) {
1985                                 Color c;
1986
1987                                 if (!preConverted) {
1988                                         if (colorConverter == null)
1989                                                 colorConverter = TypeDescriptor.GetConverter (typeof (Color));
1990
1991                                         if (str.Trim().Length == 0) {
1992                                                 CodeTypeReferenceExpression ft = new CodeTypeReferenceExpression (typeof (Color));
1993                                                 return CreateNullableExpression (originalType,
1994                                                                                  new CodeFieldReferenceExpression (ft, "Empty"),
1995                                                                                  wasNullable);
1996                                         }
1997
1998                                         try {
1999                                                 if (str.IndexOf (',') == -1) {
2000                                                         c = (Color) colorConverter.ConvertFromString (str);
2001                                                 } else {
2002                                                         int [] argb = new int [4];
2003                                                         argb [0] = 255;
2004
2005                                                         string [] parts = str.Split (',');
2006                                                         int length = parts.Length;
2007                                                         if (length < 3)
2008                                                                 throw new Exception ();
2009
2010                                                         int basei = (length == 4) ? 0 : 1;
2011                                                         for (int i = length - 1; i >= 0; i--) {
2012                                                                 argb [basei + i] = (int) Byte.Parse (parts [i]);
2013                                                         }
2014                                                         c = Color.FromArgb (argb [0], argb [1], argb [2], argb [3]);
2015                                                 }
2016                                         } catch (Exception e) {
2017                                                 // Hack: "LightGrey" is accepted, but only for ASP.NET, as the
2018                                                 // TypeConverter for Color fails to ConvertFromString.
2019                                                 // Hence this hack...
2020                                                 if (InvariantCompareNoCase ("LightGrey", str)) {
2021                                                         c = Color.LightGray;
2022                                                 } else {
2023                                                         throw new ParseException (currentLocation,
2024                                                                                   "Color " + str + " is not a valid color.", e);
2025                                                 }
2026                                         }
2027                                 } else
2028                                         c = (Color)convertedFromAttr;
2029
2030                                 if (c.IsKnownColor) {
2031                                         CodeFieldReferenceExpression expr = new CodeFieldReferenceExpression ();
2032                                         if (c.IsSystemColor)
2033                                                 type = typeof (SystemColors);
2034
2035                                         expr.TargetObject = new CodeTypeReferenceExpression (type);
2036                                         expr.FieldName = c.Name;
2037                                         return CreateNullableExpression (originalType, expr, wasNullable);
2038                                 } else {
2039                                         CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
2040                                         m.TargetObject = new CodeTypeReferenceExpression (type);
2041                                         m.MethodName = "FromArgb";
2042                                         CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (m);
2043                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.A));
2044                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.R));
2045                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.G));
2046                                         invoke.Parameters.Add (new CodePrimitiveExpression (c.B));
2047                                         return CreateNullableExpression (originalType, invoke, wasNullable);
2048                                 }
2049                         }
2050
2051                         TypeConverter converter = preConverted ? cvt : wasNullable ? TypeDescriptor.GetConverter (type) : null;
2052                         if (converter == null) {
2053                                 PropertyDescriptor pdesc = TypeDescriptor.GetProperties (member.DeclaringType) [member.Name];
2054                                 if (pdesc != null)
2055                                         converter = pdesc.Converter;
2056                                 else {
2057                                         Type memberType;
2058                                         switch (member.MemberType) {
2059                                                 case MemberTypes.Field:
2060                                                         memberType = ((FieldInfo)member).FieldType;
2061                                                         break;
2062
2063                                                 case MemberTypes.Property:
2064                                                         memberType = ((PropertyInfo)member).PropertyType;
2065                                                         break;
2066
2067                                                 default:
2068                                                         memberType = null;
2069                                                         break;
2070                                         }
2071
2072                                         if (memberType == null)
2073                                                 return null;
2074
2075                                         converter = TypeDescriptor.GetConverter (memberType);
2076                                 }
2077                         }
2078
2079                         if (preConverted || (converter != null && SafeCanConvertFrom (typeof (string), converter))) {
2080                                 object value = preConverted ? convertedFromAttr : converter.ConvertFromInvariantString (str);
2081
2082                                 if (SafeCanConvertTo (typeof (InstanceDescriptor), converter)) {
2083                                         InstanceDescriptor idesc = (InstanceDescriptor) converter.ConvertTo (value, typeof(InstanceDescriptor));
2084                                         if (wasNullable)
2085                                                 return CreateNullableExpression (originalType, GenerateInstance (idesc, true),
2086                                                                                  wasNullable);
2087
2088                                         return new CodeCastExpression (type, GenerateInstance (idesc, true));
2089                                 }
2090
2091                                 CodeExpression exp = GenerateObjectInstance (value, false);
2092                                 if (exp != null)
2093                                         return CreateNullableExpression (originalType, exp, wasNullable);
2094
2095                                 CodeMethodReferenceExpression m = new CodeMethodReferenceExpression ();
2096                                 m.TargetObject = new CodeTypeReferenceExpression (typeof (TypeDescriptor));
2097                                 m.MethodName = "GetConverter";
2098                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (m);
2099                                 CodeTypeReference tref = new CodeTypeReference (type);
2100                                 invoke.Parameters.Add (new CodeTypeOfExpression (tref));
2101
2102                                 invoke = new CodeMethodInvokeExpression (invoke, "ConvertFrom");
2103                                 invoke.Parameters.Add (new CodePrimitiveExpression (str));
2104
2105                                 if (wasNullable)
2106                                         return CreateNullableExpression (originalType, invoke, wasNullable);
2107
2108                                 return new CodeCastExpression (type, invoke);
2109                         }
2110
2111                         Console.WriteLine ("Unknown type: " + type + " value: " + str);
2112
2113                         return CreateNullableExpression (originalType, new CodePrimitiveExpression (str), wasNullable);
2114                 }
2115
2116                 CodeExpression GenerateInstance (InstanceDescriptor idesc, bool throwOnError)
2117                 {
2118                         CodeExpression[] parameters = new CodeExpression [idesc.Arguments.Count];
2119                         int n = 0;
2120                         foreach (object ob in idesc.Arguments) {
2121                                 CodeExpression exp = GenerateObjectInstance (ob, throwOnError);
2122                                 if (exp == null) return null;
2123                                 parameters [n++] = exp;
2124                         }
2125
2126                         switch (idesc.MemberInfo.MemberType) {
2127                         case MemberTypes.Constructor:
2128                                 CodeTypeReference tob = new CodeTypeReference (idesc.MemberInfo.DeclaringType);
2129                                 return new CodeObjectCreateExpression (tob, parameters);
2130
2131                         case MemberTypes.Method:
2132                                 CodeTypeReferenceExpression mt = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
2133                                 return new CodeMethodInvokeExpression (mt, idesc.MemberInfo.Name, parameters);
2134
2135                         case MemberTypes.Field:
2136                                 CodeTypeReferenceExpression ft = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
2137                                 return new CodeFieldReferenceExpression (ft, idesc.MemberInfo.Name);
2138
2139                         case MemberTypes.Property:
2140                                 CodeTypeReferenceExpression pt = new CodeTypeReferenceExpression (idesc.MemberInfo.DeclaringType);
2141                                 return new CodePropertyReferenceExpression (pt, idesc.MemberInfo.Name);
2142                         }
2143                         throw new ParseException (currentLocation, "Invalid instance type.");
2144                 }
2145
2146                 CodeExpression GenerateObjectInstance (object value, bool throwOnError)
2147                 {
2148                         if (value == null)
2149                                 return new CodePrimitiveExpression (null);
2150
2151                         if (value is System.Type) {
2152                                 CodeTypeReference tref = new CodeTypeReference (value.ToString ());
2153                                 return new CodeTypeOfExpression (tref);
2154                         }
2155
2156                         Type t = value.GetType ();
2157
2158                         if (t.IsPrimitive || value is string)
2159                                 return new CodePrimitiveExpression (value);
2160
2161                         if (t.IsArray) {
2162                                 Array ar = (Array) value;
2163                                 CodeExpression[] items = new CodeExpression [ar.Length];
2164                                 for (int n=0; n<ar.Length; n++) {
2165                                         CodeExpression exp = GenerateObjectInstance (ar.GetValue (n), throwOnError);
2166                                         if (exp == null) return null;
2167                                         items [n] = exp;
2168                                 }
2169                                 return new CodeArrayCreateExpression (new CodeTypeReference (t), items);
2170                         }
2171
2172                         TypeConverter converter = TypeDescriptor.GetConverter (t);
2173                         if (converter != null && converter.CanConvertTo (typeof (InstanceDescriptor))) {
2174                                 InstanceDescriptor idesc = (InstanceDescriptor) converter.ConvertTo (value, typeof(InstanceDescriptor));
2175                                 return GenerateInstance (idesc, throwOnError);
2176                         }
2177
2178                         InstanceDescriptor desc = GetDefaultInstanceDescriptor (value);
2179                         if (desc != null) return GenerateInstance (desc, throwOnError);
2180
2181                         if (throwOnError)
2182                                 throw new ParseException (currentLocation, "Cannot generate an instance for the type: " + t);
2183                         else
2184                                 return null;
2185                 }
2186
2187                 InstanceDescriptor GetDefaultInstanceDescriptor (object value)
2188                 {
2189                         if (value is System.Web.UI.WebControls.Unit) {
2190                                 System.Web.UI.WebControls.Unit s = (System.Web.UI.WebControls.Unit) value;
2191                                 ConstructorInfo c = typeof(System.Web.UI.WebControls.Unit).GetConstructor (
2192                                         BindingFlags.Instance | BindingFlags.Public,
2193                                         null,
2194                                         new Type[] {typeof(double), typeof(System.Web.UI.WebControls.UnitType)},
2195                                         null);
2196
2197                                 return new InstanceDescriptor (c, new object[] {s.Value, s.Type});
2198                         }
2199
2200                         if (value is System.Web.UI.WebControls.FontUnit) {
2201                                 System.Web.UI.WebControls.FontUnit s = (System.Web.UI.WebControls.FontUnit) value;
2202
2203                                 Type cParamType = null;
2204                                 object cParam = null;
2205
2206                                 switch (s.Type) {
2207                                         case FontSize.AsUnit:
2208                                         case FontSize.NotSet:
2209                                                 cParamType = typeof (System.Web.UI.WebControls.Unit);
2210                                                 cParam = s.Unit;
2211                                                 break;
2212
2213                                         default:
2214                                                 cParamType = typeof (string);
2215                                                 cParam = s.Type.ToString ();
2216                                                 break;
2217                                 }
2218
2219                                 ConstructorInfo c = typeof(System.Web.UI.WebControls.FontUnit).GetConstructor (
2220                                         BindingFlags.Instance | BindingFlags.Public,
2221                                         null,
2222                                         new Type[] {cParamType},
2223                                         null);
2224                                 if (c != null)
2225                                         return new InstanceDescriptor (c, new object[] {cParam});
2226                         }
2227                         return null;
2228                 }
2229
2230 #if DEBUG
2231                 CodeMethodInvokeExpression CreateConsoleWriteLineCall (string format, params CodeExpression[] parms)
2232                 {
2233                         CodeMethodReferenceExpression cwl = new CodeMethodReferenceExpression (new CodeTypeReferenceExpression (typeof (System.Console)), "WriteLine");
2234                         CodeMethodInvokeExpression cwlCall = new CodeMethodInvokeExpression (cwl);
2235
2236                         cwlCall.Parameters.Add (new CodePrimitiveExpression (format));
2237                         if (parms != null && parms.Length > 0)
2238                                 foreach (CodeExpression expr in parms)
2239                                         cwlCall.Parameters.Add (expr);
2240
2241                         return cwlCall;
2242                 }
2243 #endif
2244         }
2245 }
2246
2247
2248