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

   1 //
   2 // System.Web.Compilation.AppCodeCompiler: A compiler for the App_Code folder
   3 //
   4 // Authors:
   5 //   Marek Habersack (grendello@gmail.com)
   6 //
   7 // (C) 2006 Marek Habersack
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.CodeDom;
  33 using System.CodeDom.Compiler;
  34 using System.Configuration;
  35 using System.Collections;
  36 using System.Collections.Generic;
  37 using System.Globalization;
  38 using System.IO;
  39 using System.Reflection;
  40 using System.Web;
  41 using System.Web.Configuration;
  42 using System.Web.Profile;
  43 using System.Web.Util;
  44
  45 namespace System.Web.Compilation
  46 {
  47         class AssemblyPathResolver
  48         {
  49                 static Dictionary <string, string> assemblyCache;
  50
  51                 static AssemblyPathResolver ()
  52                 {
  53                         assemblyCache = new Dictionary <string, string> ();
  54                 }
  55
  56                 public static string GetAssemblyPath (string assemblyName)
  57                 {
  58                         lock (assemblyCache) {
  59                                 if (assemblyCache.ContainsKey (assemblyName))
  60                                         return assemblyCache [assemblyName];
  61
  62                                 Assembly asm = null;
  63                                 Exception error = null;
  64                                 if (assemblyName.IndexOf (',') != -1) {
  65                                         try {
  66                                                 asm = Assembly.Load (assemblyName);
  67                                         } catch (Exception e) {
  68                                                 error = e;
  69                                         }
  70                                 }
  71
  72                                 if (asm == null) {
  73                                         try {
  74                                                 asm = Assembly.LoadWithPartialName (assemblyName);
  75                                         } catch (Exception e) {
  76                                                 error = e;
  77                                         }
  78                                 }
  79
  80                                 if (asm == null)
  81                                         throw new HttpException (String.Format ("Unable to find assembly {0}", assemblyName), error);
  82
  83                                 assemblyCache.Add (assemblyName, asm.Location);
  84                                 return asm.Location;
  85                         }
  86                 }
  87         }
  88
  89         internal class AppCodeAssembly
  90         {
  91                 List<string> files;
  92                 List<CodeCompileUnit> units;
  93
  94                 string name;
  95                 string path;
  96                 bool validAssembly;
  97                 string outputAssemblyName;
  98
  99                 public string OutputAssemblyName
 100                 {
 101                         get {
 102                                 return outputAssemblyName;
 103                         }
 104                 }
 105
 106                 public bool IsValid
 107                 {
 108                         get { return validAssembly; }
 109                 }
 110
 111                 public string SourcePath
 112                 {
 113                         get { return path; }
 114                 }
 115
 116 // temporary
 117                 public string Name
 118                 {
 119                         get { return name; }
 120                 }
 121
 122                 public List<string> Files
 123                 {
 124                         get { return files; }
 125                 }
 126 // temporary
 127
 128                 public AppCodeAssembly (string name, string path)
 129                 {
 130                         this.files = new List<string> ();
 131                         this.units = new List<CodeCompileUnit> ();
 132                         this.validAssembly = true;
 133                         this.name = name;
 134                         this.path = path;
 135                 }
 136
 137                 public void AddFile (string path)
 138                 {
 139                         files.Add (path);
 140                 }
 141
 142                 public void AddUnit (CodeCompileUnit unit)
 143                 {
 144                         units.Add (unit);
 145                 }
 146
 147                 object OnCreateTemporaryAssemblyFile (string path)
 148                 {
 149                         FileStream f = new FileStream (path, FileMode.CreateNew);
 150                         f.Close ();
 151                         return path;
 152                 }
 153
 154                 // Build and add the assembly to the BuildManager's
 155                 // CodeAssemblies collection
 156                 public void Build (string[] binAssemblies)
 157                 {
 158                         Type compilerProvider = null;
 159                         CompilerInfo compilerInfo = null, cit;
 160                         string extension, language, cpfile = null;
 161                         List<string> knownfiles = new List<string>();
 162                         List<string> unknownfiles = new List<string>();
 163
 164                         // First make sure all the files are in the same
 165                         // language
 166                         bool known = false;
 167                         foreach (string f in files) {
 168                                 known = true;
 169                                 language = null;
 170
 171                                 extension = Path.GetExtension (f);
 172                                 if (String.IsNullOrEmpty (extension) || !CodeDomProvider.IsDefinedExtension (extension))
 173                                         known = false;
 174                                 if (known) {
 175                                         language = CodeDomProvider.GetLanguageFromExtension(extension);
 176                                         if (!CodeDomProvider.IsDefinedLanguage (language))
 177                                                 known = false;
 178                                 }
 179                                 if (!known || language == null) {
 180                                         unknownfiles.Add (f);
 181                                         continue;
 182                                 }
 183
 184                                 cit = CodeDomProvider.GetCompilerInfo (language);
 185                                 if (cit == null || !cit.IsCodeDomProviderTypeValid)
 186                                         continue;
 187                                 if (compilerProvider == null) {
 188                                         cpfile = f;
 189                                         compilerProvider = cit.CodeDomProviderType;
 190                                         compilerInfo = cit;
 191                                 } else if (compilerProvider != cit.CodeDomProviderType)
 192                                         throw new HttpException (
 193                                                 String.Format (
 194                                                         "Files {0} and {1} are in different languages - they cannot be compiled into the same assembly",
 195                                                         Path.GetFileName (cpfile),
 196                                                         Path.GetFileName (f)));
 197                                 knownfiles.Add (f);
 198                         }
 199
 200                         CodeDomProvider provider = null;
 201                         CompilationSection compilationSection = WebConfigurationManager.GetWebApplicationSection ("system.web/compilation") as CompilationSection;
 202                         if (compilerInfo == null) {
 203                                 if (!CodeDomProvider.IsDefinedLanguage (compilationSection.DefaultLanguage))
 204                                         throw new HttpException ("Failed to retrieve default source language");
 205                                 compilerInfo = CodeDomProvider.GetCompilerInfo (compilationSection.DefaultLanguage);
 206                                 if (compilerInfo == null || !compilerInfo.IsCodeDomProviderTypeValid)
 207                                         throw new HttpException ("Internal error while initializing application");
 208                         }
 209
 210                         provider = compilerInfo.CreateProvider ();
 211                         if (provider == null)
 212                                 throw new HttpException ("A code provider error occurred while initializing application.");
 213
 214                         AssemblyBuilder abuilder = new AssemblyBuilder (provider);
 215                         foreach (string file in knownfiles)
 216                                 abuilder.AddCodeFile (file);
 217                         foreach (CodeCompileUnit unit in units)
 218                                 abuilder.AddCodeCompileUnit (unit);
 219
 220                         BuildProvider bprovider;
 221                         CompilerParameters parameters = compilerInfo.CreateDefaultCompilerParameters ();
 222                         parameters.IncludeDebugInformation = compilationSection.Debug;
 223
 224                         if (binAssemblies != null && binAssemblies.Length > 0)
 225                                 parameters.ReferencedAssemblies.AddRange (binAssemblies);
 226
 227                         if (compilationSection != null) {
 228                                 foreach (AssemblyInfo ai in compilationSection.Assemblies)
 229                                         if (ai.Assembly != "*") {
 230                                                 try {
 231                                                         parameters.ReferencedAssemblies.Add (
 232                                                                 AssemblyPathResolver.GetAssemblyPath (ai.Assembly));
 233                                                 } catch (Exception ex) {
 234                                                         throw new HttpException (
 235                                                                 String.Format ("Could not find assembly {0}.", ai.Assembly),
 236                                                                 ex);
 237                                                 }
 238                                         }
 239
 240                                 BuildProviderCollection buildProviders = compilationSection.BuildProviders;
 241
 242                                 foreach (string file in unknownfiles) {
 243                                         bprovider = GetBuildProviderFor (file, buildProviders);
 244                                         if (bprovider == null)
 245                                                 continue;
 246                                         bprovider.GenerateCode (abuilder);
 247                                 }
 248                         }
 249
 250                         if (knownfiles.Count == 0 && unknownfiles.Count == 0 && units.Count == 0)
 251                                 return;
 252
 253                         outputAssemblyName = (string)FileUtils.CreateTemporaryFile (
 254                                 AppDomain.CurrentDomain.SetupInformation.DynamicBase,
 255                                 name, "dll", OnCreateTemporaryAssemblyFile);
 256                         parameters.OutputAssembly = outputAssemblyName;
 257                         foreach (Assembly a in BuildManager.TopLevelAssemblies)
 258                                 parameters.ReferencedAssemblies.Add (a.Location);
 259                         CompilerResults results = abuilder.BuildAssembly (parameters);
 260                         if (results == null)
 261                                 return;
 262
 263                         if (results.NativeCompilerReturnValue == 0) {
 264                                 BuildManager.CodeAssemblies.Add (results.CompiledAssembly);
 265                                 BuildManager.TopLevelAssemblies.Add (results.CompiledAssembly);
 266                                 HttpRuntime.WritePreservationFile (results.CompiledAssembly, name);
 267                         } else {
 268                                 if (HttpContext.Current.IsCustomErrorEnabled)
 269                                         throw new HttpException ("An error occurred while initializing application.");
 270                                 throw new CompilationException (null, results.Errors, null);
 271                         }
 272                 }
 273
 274                 VirtualPath PhysicalToVirtual (string file)
 275                 {
 276                         return new VirtualPath (file.Replace (HttpRuntime.AppDomainAppPath, "/").Replace (Path.DirectorySeparatorChar, '/'));
 277                 }
 278
 279                 BuildProvider GetBuildProviderFor (string file, BuildProviderCollection buildProviders)
 280                 {
 281                         if (file == null || file.Length == 0 || buildProviders == null || buildProviders.Count == 0)
 282                                 return null;
 283
 284                         BuildProvider ret = buildProviders.GetProviderInstanceForExtension (Path.GetExtension (file));
 285                         if (ret != null && IsCorrectBuilderType (ret)) {
 286                                 ret.SetVirtualPath (PhysicalToVirtual (file));
 287                                 return ret;
 288                         }
 289
 290                         return null;
 291                 }
 292
 293                 bool IsCorrectBuilderType (BuildProvider bp)
 294                 {
 295                         if (bp == null)
 296                                 return false;
 297                         Type type;
 298                         object[] attrs;
 299
 300                         type = bp.GetType ();
 301                         attrs = type.GetCustomAttributes (true);
 302                         if (attrs == null)
 303                                 return false;
 304
 305                         BuildProviderAppliesToAttribute bpAppliesTo;
 306                         bool attributeFound = false;
 307                         foreach (object attr in attrs) {
 308                                 bpAppliesTo = attr as BuildProviderAppliesToAttribute;
 309                                 if (bpAppliesTo == null)
 310                                         continue;
 311                                 attributeFound = true;
 312                                 if ((bpAppliesTo.AppliesTo & BuildProviderAppliesTo.All) == BuildProviderAppliesTo.All ||
 313                                     (bpAppliesTo.AppliesTo & BuildProviderAppliesTo.Code) == BuildProviderAppliesTo.Code)
 314                                         return true;
 315                         }
 316
 317                         if (attributeFound)
 318                                 return false;
 319                         return true;
 320                 }
 321
 322         }
 323
 324         internal class AppCodeCompiler
 325         {
 326                 static bool _alreadyCompiled;
 327                 internal static string DefaultAppCodeAssemblyName;
 328
 329                 // A dictionary that contains an entry per an assembly that will
 330                 // be produced by compiling App_Code. There's one main assembly
 331                 // and an optional number of assemblies as defined by the
 332                 // codeSubDirectories sub-element of the compilation element in
 333                 // the system.web section of the app's config file.
 334                 // Each entry's value is an AppCodeAssembly instance.
 335                 //
 336                 // Assemblies are named as follows:
 337                 //
 338                 //  1. main assembly: App_Code.{HASH}
 339                 //  2. subdir assemblies: App_SubCode_{DirName}.{HASH}
 340                 //
 341                 // If any of the assemblies contains files that would be
 342                 // compiled with different compilers, a System.Web.HttpException
 343                 // is thrown.
 344                 //
 345                 // Files for which there is no explicit builder are ignored
 346                 // silently
 347                 //
 348                 // Files for which exist BuildProviders but which have no
 349                 // unambiguous language assigned to them (e.g. .wsdl files), are
 350                 // built using the default website compiler.
 351                 List<AppCodeAssembly> assemblies;
 352                 string providerTypeName = null;
 353
 354                 public AppCodeCompiler ()
 355                 {
 356                         assemblies = new List<AppCodeAssembly>();
 357                 }
 358
 359                 bool ProcessAppCodeDir (string appCode, AppCodeAssembly defasm)
 360                 {
 361                         // First process the codeSubDirectories
 362                         CompilationSection cs = (CompilationSection) WebConfigurationManager.GetWebApplicationSection ("system.web/compilation");
 363
 364                         if (cs != null) {
 365                                 string aname;
 366                                 for (int i = 0; i < cs.CodeSubDirectories.Count; i++) {
 367                                         aname = String.Concat ("App_SubCode_", cs.CodeSubDirectories[i].DirectoryName);
 368                                         assemblies.Add (new AppCodeAssembly (
 369                                                                 aname,
 370                                                                 Path.Combine (appCode, cs.CodeSubDirectories[i].DirectoryName)));
 371                                 }
 372                         }
 373
 374                         return CollectFiles (appCode, defasm);
 375                 }
 376
 377                 CodeTypeReference GetProfilePropertyType (string type)
 378                 {
 379                         if (String.IsNullOrEmpty (type))
 380                                 throw new ArgumentException ("String size cannot be 0", "type");
 381                         return new CodeTypeReference (type);
 382                 }
 383
 384                 string FindProviderTypeName (ProfileSection ps, string providerName)
 385                 {
 386                         if (ps.Providers == null || ps.Providers.Count == 0)
 387                                 return null;
 388
 389                         ProviderSettings pset = ps.Providers [providerName];
 390                         if (pset == null)
 391                                 return null;
 392                         return pset.Type;
 393                 }
 394
 395                 void GetProfileProviderAttribute (ProfileSection ps, CodeAttributeDeclarationCollection collection,
 396                                                   string providerName)
 397                 {
 398                         if (String.IsNullOrEmpty (providerName))
 399                                 providerTypeName = FindProviderTypeName (ps, ps.DefaultProvider);
 400                         else
 401                                 providerTypeName = FindProviderTypeName (ps, providerName);
 402                         if (providerTypeName == null)
 403                                 throw new HttpException (String.Format ("Profile provider type not defined: {0}",
 404                                                                         providerName));
 405
 406                         collection.Add (
 407                                 new CodeAttributeDeclaration (
 408                                         "ProfileProvider",
 409                                         new CodeAttributeArgument (
 410                                                 new CodePrimitiveExpression (providerTypeName)
 411                                         )
 412                                 )
 413                         );
 414                 }
 415
 416                 void GetProfileSettingsSerializeAsAttribute (ProfileSection ps, CodeAttributeDeclarationCollection collection,
 417                                                              SerializationMode mode)
 418                 {
 419                         string parameter = String.Concat ("SettingsSerializeAs.", mode.ToString ());
 420                         collection.Add (
 421                                 new CodeAttributeDeclaration (
 422                                         "SettingsSerializeAs",
 423                                         new CodeAttributeArgument (
 424                                                 new CodeSnippetExpression (parameter)
 425                                         )
 426                                 )
 427                         );
 428
 429                 }
 430
 431                 void AddProfileClassGetProfileMethod (CodeTypeDeclaration profileClass)
 432                 {
 433                         CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression (
 434                                 new CodeTypeReferenceExpression (typeof (System.Web.Profile.ProfileBase)),
 435                                 "Create");
 436                         CodeMethodInvokeExpression minvoke = new CodeMethodInvokeExpression (
 437                                 mref,
 438                                 new CodeExpression[] { new CodeVariableReferenceExpression ("username") }
 439                         );
 440                         CodeCastExpression cast = new CodeCastExpression ();
 441                         cast.TargetType = new CodeTypeReference ("ProfileCommon");
 442                         cast.Expression = minvoke;
 443
 444                         CodeMethodReturnStatement ret = new CodeMethodReturnStatement ();
 445                         ret.Expression = cast;
 446
 447                         CodeMemberMethod method = new CodeMemberMethod ();
 448                         method.Name = "GetProfile";
 449                         method.ReturnType = new CodeTypeReference ("ProfileCommon");
 450                         method.Parameters.Add (new CodeParameterDeclarationExpression("System.String", "username"));
 451                         method.Statements.Add (ret);
 452                         method.Attributes = MemberAttributes.Public;
 453
 454                         profileClass.Members.Add (method);
 455                 }
 456
 457                 void AddProfileClassProperty (ProfileSection ps, CodeTypeDeclaration profileClass, ProfilePropertySettings pset)
 458                 {
 459                         string name = pset.Name;
 460                         if (String.IsNullOrEmpty (name))
 461                                 throw new HttpException ("Profile property 'Name' attribute cannot be null.");
 462                         CodeMemberProperty property = new CodeMemberProperty ();
 463                         string typeName = pset.Type;
 464                         if (typeName == "string")
 465                                 typeName = "System.String";
 466                         property.Name = name;
 467                         property.Type = GetProfilePropertyType (typeName);
 468                         property.Attributes = MemberAttributes.Public;
 469
 470                         CodeAttributeDeclarationCollection collection = new CodeAttributeDeclarationCollection();
 471                         GetProfileProviderAttribute (ps, collection, pset.Provider);
 472                         GetProfileSettingsSerializeAsAttribute (ps, collection, pset.SerializeAs);
 473
 474                         property.CustomAttributes = collection;
 475                         CodeMethodReturnStatement ret = new CodeMethodReturnStatement ();
 476                         CodeCastExpression cast = new CodeCastExpression ();
 477                         ret.Expression = cast;
 478
 479                         CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression (
 480                                 new CodeThisReferenceExpression (),
 481                                 "GetPropertyValue");
 482                         CodeMethodInvokeExpression minvoke = new CodeMethodInvokeExpression (
 483                                 mref,
 484                                 new CodeExpression[] { new CodePrimitiveExpression (name) }
 485                         );
 486                         cast.TargetType = new CodeTypeReference (typeName);
 487                         cast.Expression = minvoke;
 488                         property.GetStatements.Add (ret);
 489
 490                         if (!pset.ReadOnly) {
 491                                 mref = new CodeMethodReferenceExpression (
 492                                         new CodeThisReferenceExpression (),
 493                                         "SetPropertyValue");
 494                                 minvoke = new CodeMethodInvokeExpression (
 495                                         mref,
 496                                         new CodeExpression[] { new CodePrimitiveExpression (name), new CodeSnippetExpression ("value") }
 497                                 );
 498                                 property.SetStatements.Add (minvoke);
 499                         }
 500
 501
 502                         profileClass.Members.Add (property);
 503                 }
 504
 505                 void AddProfileClassGroupProperty (string groupName, string memberName, CodeTypeDeclaration profileClass)
 506                 {
 507                         CodeMemberProperty property = new CodeMemberProperty ();
 508                         property.Name = memberName;
 509                         property.Type = new CodeTypeReference (groupName);
 510                         property.Attributes = MemberAttributes.Public;
 511
 512                         CodeMethodReturnStatement ret = new CodeMethodReturnStatement ();
 513                         CodeCastExpression cast = new CodeCastExpression ();
 514                         ret.Expression = cast;
 515
 516                         CodeMethodReferenceExpression mref = new CodeMethodReferenceExpression (
 517                                 new CodeThisReferenceExpression (),
 518                                 "GetProfileGroup");
 519                         CodeMethodInvokeExpression minvoke = new CodeMethodInvokeExpression (
 520                                 mref,
 521                                 new CodeExpression[] { new CodePrimitiveExpression (memberName) }
 522                         );
 523                         cast.TargetType = new CodeTypeReference (groupName);
 524                         cast.Expression = minvoke;
 525                         property.GetStatements.Add (ret);
 526
 527                         profileClass.Members.Add (property);
 528                 }
 529
 530                 void BuildProfileClass (ProfileSection ps, string className, ProfilePropertySettingsCollection psc,
 531                                         CodeNamespace ns, string baseClass, bool baseIsGlobal,
 532                                         SortedList <string, string> groupProperties)
 533                 {
 534                         CodeTypeDeclaration profileClass = new CodeTypeDeclaration (className);
 535                         CodeTypeReference cref = new CodeTypeReference (baseClass);
 536                         if (baseIsGlobal)
 537                                 cref.Options |= CodeTypeReferenceOptions.GlobalReference;
 538                         profileClass.BaseTypes.Add (cref);
 539                         profileClass.TypeAttributes = TypeAttributes.Public;
 540                         ns.Types.Add (profileClass);
 541
 542                         foreach (ProfilePropertySettings pset in psc)
 543                                 AddProfileClassProperty (ps, profileClass, pset);
 544                         if (groupProperties != null && groupProperties.Count > 0)
 545                                 foreach (KeyValuePair <string, string> group in groupProperties)
 546                                         AddProfileClassGroupProperty (group.Key, group.Value, profileClass);
 547                         AddProfileClassGetProfileMethod (profileClass);
 548                 }
 549
 550                 string MakeGroupName (string name)
 551                 {
 552                         return String.Concat ("ProfileGroup", name);
 553                 }
 554
 555                 // FIXME: there should be some validation of syntactic correctness of the member/class name
 556                 // for the groups/properties. For now it's left to the compiler to report errors.
 557                 //
 558                 // CodeGenerator.IsValidLanguageIndependentIdentifier (id) - use that
 559                 //
 560                 bool ProcessCustomProfile (ProfileSection ps, AppCodeAssembly defasm)
 561                 {
 562                         CodeCompileUnit unit = new CodeCompileUnit ();
 563                         CodeNamespace ns = new CodeNamespace (null);
 564                         unit.Namespaces.Add (ns);
 565                         defasm.AddUnit (unit);
 566
 567                         ns.Imports.Add (new CodeNamespaceImport ("System"));
 568                         ns.Imports.Add (new CodeNamespaceImport ("System.Configuration"));
 569                         ns.Imports.Add (new CodeNamespaceImport ("System.Web"));
 570                         ns.Imports.Add (new CodeNamespaceImport ("System.Web.Profile"));
 571
 572                         RootProfilePropertySettingsCollection props = ps.PropertySettings;
 573                         if (props == null)
 574                                 return true;
 575
 576                         SortedList<string, string> groupProperties = new SortedList<string, string> ();
 577                         string groupName;
 578                         foreach (ProfileGroupSettings pgs in props.GroupSettings) {
 579                                 groupName = MakeGroupName (pgs.Name);
 580                                 groupProperties.Add (groupName, pgs.Name);
 581                                 BuildProfileClass (ps, groupName, pgs.PropertySettings, ns,
 582                                                    "System.Web.Profile.ProfileGroupBase", true, null);
 583                         }
 584
 585                         string baseType = ps.Inherits;
 586                         if (String.IsNullOrEmpty (baseType))
 587                                 baseType = "System.Web.Profile.ProfileBase";
 588                         else {
 589                                 string[] parts = baseType.Split (new char[] {','});
 590                                 if (parts.Length > 1)
 591                                         baseType = parts [0].Trim ();
 592                         }
 593
 594                         bool baseIsGlobal;
 595                         if (baseType.IndexOf ('.') != -1)
 596                                 baseIsGlobal = true;
 597                         else
 598                                 baseIsGlobal = false;
 599
 600                         BuildProfileClass (ps, "ProfileCommon", props, ns, baseType, baseIsGlobal, groupProperties);
 601                         return true;
 602                 }
 603
 604 //              void PutCustomProfileInContext (HttpContext context, string assemblyName)
 605 //              {
 606 //                      Type type = Type.GetType (String.Format ("ProfileCommon, {0}",
 607 //                                                               Path.GetFileNameWithoutExtension (assemblyName)));
 608 //                      ProfileBase pb = Activator.CreateInstance (type) as ProfileBase;
 609 //                      if (pb != null)
 610 //                              context.Profile = pb;
 611 //              }
 612
 613                 public static bool HaveCustomProfile (ProfileSection ps)
 614                 {
 615                         if (ps == null || !ps.Enabled)
 616                                 return false;
 617
 618                         RootProfilePropertySettingsCollection props = ps.PropertySettings;
 619                         ProfileGroupSettingsCollection groups = props != null ? props.GroupSettings : null;
 620
 621                         if (!String.IsNullOrEmpty (ps.Inherits) || (props != null && props.Count > 0) || (groups != null && groups.Count > 0))
 622                                 return true;
 623
 624                         return false;
 625                 }
 626
 627                 public void Compile ()
 628                 {
 629                         if (_alreadyCompiled)
 630                                 return;
 631
 632                         string appCode = Path.Combine (HttpRuntime.AppDomainAppPath, "App_Code");
 633                         ProfileSection ps = WebConfigurationManager.GetWebApplicationSection ("system.web/profile") as ProfileSection;
 634                         bool haveAppCodeDir = Directory.Exists (appCode);
 635                         bool haveCustomProfile = HaveCustomProfile (ps);
 636
 637                         if (!haveAppCodeDir && !haveCustomProfile)
 638                                 return;
 639
 640                         AppCodeAssembly defasm = new AppCodeAssembly ("App_Code", appCode);
 641                         assemblies.Add (defasm);
 642
 643                         bool haveCode = false;
 644                         if (haveAppCodeDir)
 645                                 haveCode = ProcessAppCodeDir (appCode, defasm);
 646                         if (haveCustomProfile)
 647                                 if (ProcessCustomProfile (ps, defasm))
 648                                         haveCode = true;
 649
 650                         if (!haveCode)
 651                                 return;
 652
 653                         HttpRuntime.EnableAssemblyMapping (true);
 654                         string[] binAssemblies = HttpApplication.BinDirectoryAssemblies;
 655
 656                         foreach (AppCodeAssembly aca in assemblies)
 657                                 aca.Build (binAssemblies);
 658                         _alreadyCompiled = true;
 659                         DefaultAppCodeAssemblyName = Path.GetFileNameWithoutExtension (defasm.OutputAssemblyName);
 660
 661                         RunAppInitialize ();
 662
 663                         if (haveCustomProfile && providerTypeName != null) {
 664                                 if (Type.GetType (providerTypeName, false) == null) {
 665                                         foreach (Assembly asm in BuildManager.TopLevelAssemblies) {
 666                                                 if (asm == null)
 667                                                         continue;
 668
 669                                                 if (asm.GetType (providerTypeName, false) != null)
 670                                                         return;
 671                                         }
 672                                 } else
 673                                         return;
 674
 675                                 Exception noTypeException = null;
 676                                 Type ptype = null;
 677
 678                                 try {
 679                                         ptype = HttpApplication.LoadTypeFromBin (providerTypeName);
 680                                 } catch (Exception ex) {
 681                                         noTypeException = ex;
 682                                 }
 683
 684                                 if (ptype == null)
 685                                         throw new HttpException (String.Format ("Profile provider type not found: {0}", providerTypeName), noTypeException);
 686                         }
 687                 }
 688
 689                 // Documented (sort of...) briefly in:
 690                 //
 691                 //   http://quickstarts.asp.net/QuickStartv20/aspnet/doc/extensibility.aspx
 692                 //   http://msdn2.microsoft.com/en-us/library/system.web.hosting.virtualpathprovider.aspx
 693                 void RunAppInitialize ()
 694                 {
 695                         MethodInfo mi = null, tmi;
 696                         Type[] types;
 697
 698                         foreach (Assembly asm in BuildManager.CodeAssemblies) {
 699                                 types = asm.GetExportedTypes ();
 700                                 if (types == null || types.Length == 0)
 701                                         continue;
 702
 703                                 foreach (Type type in types) {
 704                                         tmi = type.GetMethod ("AppInitialize",
 705                                                               BindingFlags.Public | BindingFlags.Static | BindingFlags.IgnoreCase,
 706                                                               null,
 707                                                               Type.EmptyTypes,
 708                                                               null);
 709                                         if (tmi == null)
 710                                                 continue;
 711
 712                                         if (mi != null)
 713                                                 throw new HttpException ("The static AppInitialize method found in more than one type in the App_Code directory.");
 714
 715                                         mi = tmi;
 716                                 }
 717                         }
 718
 719                         if (mi == null)
 720                                 return;
 721
 722                         mi.Invoke (null, null);
 723                 }
 724
 725                 bool CollectFiles (string dir, AppCodeAssembly aca)
 726                 {
 727                         bool haveFiles = false;
 728
 729                         AppCodeAssembly curaca = aca;
 730                         foreach (string f in Directory.GetFiles (dir)) {
 731                                 aca.AddFile (f);
 732                                 haveFiles = true;
 733                         }
 734
 735                         foreach (string d in Directory.GetDirectories (dir)) {
 736                                 foreach (AppCodeAssembly a in assemblies)
 737                                         if (a.SourcePath == d) {
 738                                                 curaca = a;
 739                                                 break;
 740                                         }
 741                                 if (CollectFiles (d, curaca))
 742                                         haveFiles = true;
 743                                 curaca = aca;
 744                         }
 745                         return haveFiles;
 746                 }
 747         }
 748 }
 749