mcs/class/Microsoft.Build.Engine/Microsoft.Build.BuildEngine/Project.cs

   1 //
   2 // Project.cs: Project class
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //   Ankit Jain (jankit@novell.com)
   7 //
   8 // (C) 2005 Marek Sieradzki
   9 // Copyright 2011 Novell, Inc (http://www.novell.com)
  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 #if NET_2_0
  31
  32 using System;
  33 using System.Collections;
  34 using System.Collections.Generic;
  35 using System.Collections.Specialized;
  36 using System.IO;
  37 using System.Linq;
  38 using System.Reflection;
  39 using System.Text;
  40 using System.Xml;
  41 using System.Xml.Schema;
  42 using Microsoft.Build.Framework;
  43 using Mono.XBuild.Framework;
  44 using Mono.XBuild.CommandLine;
  45
  46 namespace Microsoft.Build.BuildEngine {
  47         public class Project {
  48
  49                 bool                            buildEnabled;
  50                 Dictionary <string, List <string>>      conditionedProperties;
  51                 string[]                        defaultTargets;
  52                 Encoding                        encoding;
  53                 BuildItemGroup                  evaluatedItems;
  54                 BuildItemGroup                  evaluatedItemsIgnoringCondition;
  55                 Dictionary <string, BuildItemGroup>     evaluatedItemsByName;
  56                 Dictionary <string, BuildItemGroup>     evaluatedItemsByNameIgnoringCondition;
  57                 BuildPropertyGroup              evaluatedProperties;
  58                 string                          firstTargetName;
  59                 string                          fullFileName;
  60                 BuildPropertyGroup              globalProperties;
  61                 GroupingCollection              groupingCollection;
  62                 bool                            isDirty;
  63                 bool                            isValidated;
  64                 BuildItemGroupCollection        itemGroups;
  65                 ImportCollection                imports;
  66                 List<string>                    initialTargets;
  67                 Dictionary <string, BuildItemGroup> last_item_group_containing;
  68                 bool                            needToReevaluate;
  69                 Engine                          parentEngine;
  70                 BuildPropertyGroupCollection    propertyGroups;
  71                 string                          schemaFile;
  72                 TaskDatabase                    taskDatabase;
  73                 TargetCollection                targets;
  74                 DateTime                        timeOfLastDirty;
  75                 UsingTaskCollection             usingTasks;
  76                 XmlDocument                     xmlDocument;
  77                 bool                            unloaded;
  78                 bool                            initialTargetsBuilt;
  79                 bool                            building;
  80                 BuildSettings                   current_settings;
  81                 Stack<Batch>                    batches;
  82
  83                 // This is used to keep track of "current" file,
  84                 // which is then used to set the reserved properties
  85                 // $(MSBuildThisFile*)
  86                 Stack<string> this_file_property_stack;
  87                 ProjectLoadSettings             project_load_settings;
  88
  89
  90                 static string extensions_path;
  91                 static XmlNamespaceManager      manager;
  92                 static string ns = "http://schemas.microsoft.com/developer/msbuild/2003";
  93
  94                 public Project ()
  95                         : this (Engine.GlobalEngine)
  96                 {
  97                 }
  98
  99                 public Project (Engine engine) : this (engine, null)
 100                 {
 101                 }
 102
 103                 public Project (Engine engine, string toolsVersion)
 104                 {
 105                         parentEngine  = engine;
 106                         ToolsVersion = toolsVersion;
 107
 108                         buildEnabled = ParentEngine.BuildEnabled;
 109                         xmlDocument = new XmlDocument ();
 110                         xmlDocument.PreserveWhitespace = false;
 111                         xmlDocument.AppendChild (xmlDocument.CreateElement ("Project", XmlNamespace));
 112                         xmlDocument.DocumentElement.SetAttribute ("xmlns", ns);
 113
 114                         fullFileName = String.Empty;
 115                         timeOfLastDirty = DateTime.Now;
 116                         current_settings = BuildSettings.None;
 117                         project_load_settings = ProjectLoadSettings.None;
 118
 119                         encoding = null;
 120
 121                         initialTargets = new List<string> ();
 122                         defaultTargets = new string [0];
 123                         batches = new Stack<Batch> ();
 124                         this_file_property_stack = new Stack<string> ();
 125
 126                         globalProperties = new BuildPropertyGroup (null, this, null, false);
 127                         foreach (BuildProperty bp in parentEngine.GlobalProperties)
 128                                 GlobalProperties.AddProperty (bp.Clone (true));
 129
 130                         ProcessXml ();
 131
 132                 }
 133
 134                 [MonoTODO ("Not tested")]
 135                 public void AddNewImport (string importLocation,
 136                                           string importCondition)
 137                 {
 138                         if (importLocation == null)
 139                                 throw new ArgumentNullException ("importLocation");
 140
 141                         XmlElement importElement = xmlDocument.CreateElement ("Import", XmlNamespace);
 142                         xmlDocument.DocumentElement.AppendChild (importElement);
 143                         importElement.SetAttribute ("Project", importLocation);
 144                         if (!String.IsNullOrEmpty (importCondition))
 145                                 importElement.SetAttribute ("Condition", importCondition);
 146
 147                         AddImport (importElement, null, false);
 148                         MarkProjectAsDirty ();
 149                         NeedToReevaluate ();
 150                 }
 151
 152                 public BuildItem AddNewItem (string itemName,
 153                                              string itemInclude)
 154                 {
 155                         return AddNewItem (itemName, itemInclude, false);
 156                 }
 157
 158                 [MonoTODO ("Adds item not in the same place as MS")]
 159                 public BuildItem AddNewItem (string itemName,
 160                                              string itemInclude,
 161                                              bool treatItemIncludeAsLiteral)
 162                 {
 163                         BuildItemGroup big;
 164
 165                         if (itemGroups.Count == 0)
 166                                 big = AddNewItemGroup ();
 167                         else {
 168                                 if (last_item_group_containing.ContainsKey (itemName)) {
 169                                         big = last_item_group_containing [itemName];
 170                                 } else {
 171                                         // FIXME: not tested
 172                                         BuildItemGroup [] groups = new BuildItemGroup [itemGroups.Count];
 173                                         itemGroups.CopyTo (groups, 0);
 174                                         big = groups [0];
 175                                 }
 176                         }
 177
 178                         BuildItem item = big.AddNewItem (itemName, itemInclude, treatItemIncludeAsLiteral);
 179
 180                         MarkProjectAsDirty ();
 181                         NeedToReevaluate ();
 182
 183                         return item;
 184                 }
 185
 186                 [MonoTODO ("Not tested")]
 187                 public BuildItemGroup AddNewItemGroup ()
 188                 {
 189                         XmlElement element = xmlDocument.CreateElement ("ItemGroup", XmlNamespace);
 190                         xmlDocument.DocumentElement.AppendChild (element);
 191
 192                         BuildItemGroup big = new BuildItemGroup (element, this, null, false);
 193                         itemGroups.Add (big);
 194                         MarkProjectAsDirty ();
 195                         NeedToReevaluate ();
 196
 197                         return big;
 198                 }
 199
 200                 [MonoTODO ("Ignores insertAtEndOfProject")]
 201                 public BuildPropertyGroup AddNewPropertyGroup (bool insertAtEndOfProject)
 202                 {
 203                         XmlElement element = xmlDocument.CreateElement ("PropertyGroup", XmlNamespace);
 204                         xmlDocument.DocumentElement.AppendChild (element);
 205
 206                         BuildPropertyGroup bpg = new BuildPropertyGroup (element, this, null, false);
 207                         propertyGroups.Add (bpg);
 208                         MarkProjectAsDirty ();
 209                         NeedToReevaluate ();
 210
 211                         return bpg;
 212                 }
 213
 214                 [MonoTODO ("Not tested, isn't added to TaskDatabase (no reevaluation)")]
 215                 public void AddNewUsingTaskFromAssemblyFile (string taskName,
 216                                                              string assemblyFile)
 217                 {
 218                         if (taskName == null)
 219                                 throw new ArgumentNullException ("taskName");
 220                         if (assemblyFile == null)
 221                                 throw new ArgumentNullException ("assemblyFile");
 222
 223                         XmlElement element = xmlDocument.CreateElement ("UsingTask", XmlNamespace);
 224                         xmlDocument.DocumentElement.AppendChild (element);
 225                         element.SetAttribute ("TaskName", taskName);
 226                         element.SetAttribute ("AssemblyFile", assemblyFile);
 227
 228                         UsingTask ut = new UsingTask (element, this, null);
 229                         usingTasks.Add (ut);
 230                         MarkProjectAsDirty ();
 231                 }
 232
 233                 [MonoTODO ("Not tested, isn't added to TaskDatabase (no reevaluation)")]
 234                 public void AddNewUsingTaskFromAssemblyName (string taskName,
 235                                                              string assemblyName)
 236                 {
 237                         if (taskName == null)
 238                                 throw new ArgumentNullException ("taskName");
 239                         if (assemblyName == null)
 240                                 throw new ArgumentNullException ("assemblyName");
 241
 242                         XmlElement element = xmlDocument.CreateElement ("UsingTask", XmlNamespace);
 243                         xmlDocument.DocumentElement.AppendChild (element);
 244                         element.SetAttribute ("TaskName", taskName);
 245                         element.SetAttribute ("AssemblyName", assemblyName);
 246
 247                         UsingTask ut = new UsingTask (element, this, null);
 248                         usingTasks.Add (ut);
 249                         MarkProjectAsDirty ();
 250                 }
 251
 252                 [MonoTODO ("Not tested")]
 253                 public bool Build ()
 254                 {
 255                         return Build (new string [0]);
 256                 }
 257
 258                 [MonoTODO ("Not tested")]
 259                 public bool Build (string targetName)
 260                 {
 261                         if (targetName == null)
 262                                 return Build ((string[]) null);
 263                         else
 264                                 return Build (new string [1] { targetName });
 265                 }
 266
 267                 [MonoTODO ("Not tested")]
 268                 public bool Build (string [] targetNames)
 269                 {
 270                         return Build (targetNames, null);
 271                 }
 272
 273                 [MonoTODO ("Not tested")]
 274                 public bool Build (string [] targetNames,
 275                                    IDictionary targetOutputs)
 276                 {
 277                         return Build (targetNames, targetOutputs, BuildSettings.None);
 278                 }
 279
 280                 [MonoTODO ("Not tested")]
 281                 public bool Build (string [] targetNames,
 282                                    IDictionary targetOutputs,
 283                                    BuildSettings buildFlags)
 284
 285                 {
 286                         bool result = false;
 287                         ParentEngine.StartProjectBuild (this, targetNames);
 288
 289                         // Invoking this to emit a warning in case of unsupported
 290                         // ToolsVersion
 291                         GetToolsVersionToUse (true);
 292
 293                         string current_directory = Environment.CurrentDirectory;
 294                         try {
 295                                 current_settings = buildFlags;
 296                                 if (!String.IsNullOrEmpty (fullFileName))
 297                                         Directory.SetCurrentDirectory (Path.GetDirectoryName (fullFileName));
 298                                 building = true;
 299                                 result = BuildInternal (targetNames, targetOutputs, buildFlags);
 300                         } finally {
 301                                 ParentEngine.EndProjectBuild (this, result);
 302                                 current_settings = BuildSettings.None;
 303                                 Directory.SetCurrentDirectory (current_directory);
 304                                 building = false;
 305                         }
 306
 307                         return result;
 308                 }
 309
 310                 bool BuildInternal (string [] targetNames,
 311                                    IDictionary targetOutputs,
 312                                    BuildSettings buildFlags)
 313                 {
 314                         CheckUnloaded ();
 315                         if (buildFlags == BuildSettings.None) {
 316                                 needToReevaluate = false;
 317                                 Reevaluate ();
 318                         }
 319
 320 #if NET_4_0
 321                         ProcessBeforeAndAfterTargets ();
 322 #endif
 323
 324                         if (targetNames == null || targetNames.Length == 0) {
 325                                 if (defaultTargets != null && defaultTargets.Length != 0) {
 326                                         targetNames = defaultTargets;
 327                                 } else if (firstTargetName != null) {
 328                                         targetNames = new string [1] { firstTargetName};
 329                                 } else {
 330                                         if (targets == null || targets.Count == 0) {
 331                                                 LogError (fullFileName, "No target found in the project");
 332                                                 return false;
 333                                         }
 334
 335                                         return false;
 336                                 }
 337                         }
 338
 339                         if (!initialTargetsBuilt) {
 340                                 foreach (string target in initialTargets) {
 341                                         if (!BuildTarget (target.Trim (), targetOutputs))
 342                                                 return false;
 343                                 }
 344                                 initialTargetsBuilt = true;
 345                         }
 346
 347                         foreach (string target in targetNames)
 348                                 if (!BuildTarget (target.Trim (), targetOutputs))
 349                                         return false;
 350
 351                         return true;
 352                 }
 353
 354                 bool BuildTarget (string target_name, IDictionary targetOutputs)
 355                 {
 356                         if (target_name == null)
 357                                 throw new ArgumentException ("targetNames cannot contain null strings");
 358
 359                         if (!targets.Exists (target_name)) {
 360                                 LogError (fullFileName, "Target named '{0}' not found in the project.", target_name);
 361                                 return false;
 362                         }
 363
 364                         string key = GetKeyForTarget (target_name);
 365                         if (!targets [target_name].Build (key))
 366                                 return false;
 367
 368                         ITaskItem[] outputs;
 369                         if (ParentEngine.BuiltTargetsOutputByName.TryGetValue (key, out outputs)) {
 370                                 if (targetOutputs != null)
 371                                         targetOutputs.Add (target_name, outputs);
 372                         }
 373                         return true;
 374                 }
 375
 376                 internal string GetKeyForTarget (string target_name)
 377                 {
 378                         return GetKeyForTarget (target_name, true);
 379                 }
 380
 381                 internal string GetKeyForTarget (string target_name, bool include_global_properties)
 382                 {
 383                         // target name is case insensitive
 384                         return fullFileName + ":" + target_name.ToLower () +
 385                                         (include_global_properties ? (":" + GlobalPropertiesToString (GlobalProperties))
 386                                                                    : String.Empty);
 387                 }
 388
 389                 string GlobalPropertiesToString (BuildPropertyGroup bgp)
 390                 {
 391                         StringBuilder sb = new StringBuilder ();
 392                         foreach (BuildProperty bp in bgp)
 393                                 sb.AppendFormat (" {0}:{1}", bp.Name, bp.FinalValue);
 394                         return sb.ToString ();
 395                 }
 396
 397 #if NET_4_0
 398                 void ProcessBeforeAndAfterTargets ()
 399                 {
 400                         var beforeTable = Targets.AsIEnumerable ()
 401                                                 .SelectMany (target => GetTargetNamesFromString (target.BeforeTargets),
 402                                                                 (target, before_target) => new {before_target, name = target.Name})
 403                                                 .ToLookup (x => x.before_target, x => x.name)
 404                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 405
 406                         foreach (var pair in beforeTable) {
 407                                 if (targets.Exists (pair.Key))
 408                                         targets [pair.Key].BeforeThisTargets = pair.Value;
 409                                 else
 410                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 411                         }
 412
 413                         var afterTable = Targets.AsIEnumerable ()
 414                                                 .SelectMany (target => GetTargetNamesFromString (target.AfterTargets),
 415                                                                 (target, after_target) => new {after_target, name = target.Name})
 416                                                 .ToLookup (x => x.after_target, x => x.name)
 417                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 418
 419                         foreach (var pair in afterTable) {
 420                                 if (targets.Exists (pair.Key))
 421                                         targets [pair.Key].AfterThisTargets = pair.Value;
 422                                 else
 423                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 424                         }
 425                 }
 426
 427                 string[] GetTargetNamesFromString (string targets)
 428                 {
 429                         Expression expr = new Expression ();
 430                         expr.Parse (targets, ParseOptions.AllowItemsNoMetadataAndSplit);
 431                         return (string []) expr.ConvertTo (this, typeof (string []));
 432                 }
 433 #endif
 434
 435                 [MonoTODO]
 436                 public string [] GetConditionedPropertyValues (string propertyName)
 437                 {
 438                         if (conditionedProperties.ContainsKey (propertyName))
 439                                 return conditionedProperties [propertyName].ToArray ();
 440                         else
 441                                 return new string [0];
 442                 }
 443
 444                 public BuildItemGroup GetEvaluatedItemsByName (string itemName)
 445                 {
 446                         if (needToReevaluate) {
 447                                 needToReevaluate = false;
 448                                 Reevaluate ();
 449                         }
 450
 451                         if (evaluatedItemsByName.ContainsKey (itemName))
 452                                 return evaluatedItemsByName [itemName];
 453                         else
 454                                 return new BuildItemGroup (this);
 455                 }
 456
 457                 public BuildItemGroup GetEvaluatedItemsByNameIgnoringCondition (string itemName)
 458                 {
 459                         if (needToReevaluate) {
 460                                 needToReevaluate = false;
 461                                 Reevaluate ();
 462                         }
 463
 464                         if (evaluatedItemsByNameIgnoringCondition.ContainsKey (itemName))
 465                                 return evaluatedItemsByNameIgnoringCondition [itemName];
 466                         else
 467                                 return new BuildItemGroup (this);
 468                 }
 469
 470                 public string GetEvaluatedProperty (string propertyName)
 471                 {
 472                         if (needToReevaluate) {
 473                                 needToReevaluate = false;
 474                                 Reevaluate ();
 475                         }
 476
 477                         if (propertyName == null)
 478                                 throw new ArgumentNullException ("propertyName");
 479
 480                         BuildProperty bp = evaluatedProperties [propertyName];
 481
 482                         return bp == null ? null : (string) bp;
 483                 }
 484
 485                 [MonoTODO ("We should remember that node and not use XPath to get it")]
 486                 public string GetProjectExtensions (string id)
 487                 {
 488                         if (id == null || id == String.Empty)
 489                                 return String.Empty;
 490
 491                         XmlNode node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 492
 493                         if (node == null)
 494                                 return String.Empty;
 495                         else
 496                                 return node.InnerXml;
 497                 }
 498
 499
 500                 public void Load (string projectFileName)
 501                 {
 502                         Load (projectFileName, ProjectLoadSettings.None);
 503                 }
 504
 505                 public void Load (string projectFileName, ProjectLoadSettings settings)
 506                 {
 507                         project_load_settings = settings;
 508                         if (String.IsNullOrEmpty (projectFileName))
 509                                 throw new ArgumentNullException ("projectFileName");
 510
 511                         if (!File.Exists (projectFileName))
 512                                 throw new ArgumentException (String.Format ("Project file {0} not found", projectFileName),
 513                                                 "projectFileName");
 514
 515                         this.fullFileName = Utilities.FromMSBuildPath (Path.GetFullPath (projectFileName));
 516                         PushThisFileProperty (fullFileName);
 517
 518                         string filename = fullFileName;
 519                         if (String.Compare (Path.GetExtension (fullFileName), ".sln", true) == 0) {
 520                                 Project tmp_project = ParentEngine.CreateNewProject ();
 521                                 tmp_project.FullFileName = filename;
 522                                 SolutionParser sln_parser = new SolutionParser ();
 523                                 sln_parser.ParseSolution (fullFileName, tmp_project, delegate (int errorNumber, string message) {
 524                                                 LogWarning (filename, message);
 525                                         });
 526                                 filename = fullFileName + ".proj";
 527                                 try {
 528                                         tmp_project.Save (filename);
 529                                         ParentEngine.RemoveLoadedProject (tmp_project);
 530                                         DoLoad (new StreamReader (filename));
 531                                 } finally {
 532                                         if (Environment.GetEnvironmentVariable ("XBUILD_EMIT_SOLUTION") == null)
 533                                                 File.Delete (filename);
 534                                 }
 535                         } else {
 536                                 DoLoad (new StreamReader (filename));
 537                         }
 538                 }
 539
 540                 [MonoTODO ("Not tested")]
 541                 public void Load (TextReader textReader)
 542                 {
 543                         Load (textReader, ProjectLoadSettings.None);
 544                 }
 545
 546                 public void Load (TextReader textReader, ProjectLoadSettings projectLoadSettings)
 547                 {
 548                         project_load_settings = projectLoadSettings;
 549                         fullFileName = String.Empty;
 550                         DoLoad (textReader);
 551                 }
 552
 553                 public void LoadXml (string projectXml)
 554                 {
 555                         LoadXml (projectXml, ProjectLoadSettings.None);
 556                 }
 557
 558                 public void LoadXml (string projectXml, ProjectLoadSettings projectLoadSettings)
 559                 {
 560                         project_load_settings = projectLoadSettings;
 561                         fullFileName = String.Empty;
 562                         DoLoad (new StringReader (projectXml));
 563                         MarkProjectAsDirty ();
 564                 }
 565
 566
 567                 public void MarkProjectAsDirty ()
 568                 {
 569                         isDirty = true;
 570                         timeOfLastDirty = DateTime.Now;
 571                 }
 572
 573                 [MonoTODO ("Not tested")]
 574                 public void RemoveAllItemGroups ()
 575                 {
 576                         int length = ItemGroups.Count;
 577                         BuildItemGroup [] groups = new BuildItemGroup [length];
 578                         ItemGroups.CopyTo (groups, 0);
 579
 580                         for (int i = 0; i < length; i++)
 581                                 RemoveItemGroup (groups [i]);
 582
 583                         MarkProjectAsDirty ();
 584                         NeedToReevaluate ();
 585                 }
 586
 587                 [MonoTODO ("Not tested")]
 588                 public void RemoveAllPropertyGroups ()
 589                 {
 590                         int length = PropertyGroups.Count;
 591                         BuildPropertyGroup [] groups = new BuildPropertyGroup [length];
 592                         PropertyGroups.CopyTo (groups, 0);
 593
 594                         for (int i = 0; i < length; i++)
 595                                 RemovePropertyGroup (groups [i]);
 596
 597                         MarkProjectAsDirty ();
 598                         NeedToReevaluate ();
 599                 }
 600
 601                 [MonoTODO]
 602                 public void RemoveItem (BuildItem itemToRemove)
 603                 {
 604                         if (itemToRemove == null)
 605                                 throw new ArgumentNullException ("itemToRemove");
 606
 607                         if (!itemToRemove.FromXml && !itemToRemove.HasParentItem)
 608                                 throw new InvalidOperationException ("The object passed in is not part of the project.");
 609
 610                         BuildItemGroup big = itemToRemove.ParentItemGroup;
 611
 612                         if (big.Count == 1) {
 613                                 // ParentItemGroup for items from xml and that have parent is the same
 614                                 groupingCollection.Remove (big);
 615                         } else {
 616                                 if (big.ParentProject != this)
 617                                         throw new InvalidOperationException ("The object passed in is not part of the project.");
 618
 619                                 if (itemToRemove.FromXml)
 620                                         big.RemoveItem (itemToRemove);
 621                                 else
 622                                         big.RemoveItem (itemToRemove.ParentItem);
 623                         }
 624
 625                         MarkProjectAsDirty ();
 626                         NeedToReevaluate ();
 627                 }
 628
 629                 [MonoTODO ("Not tested")]
 630                 public void RemoveItemGroup (BuildItemGroup itemGroupToRemove)
 631                 {
 632                         if (itemGroupToRemove == null)
 633                                 throw new ArgumentNullException ("itemGroupToRemove");
 634
 635                         groupingCollection.Remove (itemGroupToRemove);
 636                         MarkProjectAsDirty ();
 637                 }
 638
 639                 [MonoTODO]
 640                 // NOTE: does not modify imported projects
 641                 public void RemoveItemGroupsWithMatchingCondition (string matchingCondition)
 642                 {
 643                         throw new NotImplementedException ();
 644                 }
 645
 646                 [MonoTODO]
 647                 public void RemoveItemsByName (string itemName)
 648                 {
 649                         if (itemName == null)
 650                                 throw new ArgumentNullException ("itemName");
 651
 652                         throw new NotImplementedException ();
 653                 }
 654
 655                 [MonoTODO ("Not tested")]
 656                 public void RemovePropertyGroup (BuildPropertyGroup propertyGroupToRemove)
 657                 {
 658                         if (propertyGroupToRemove == null)
 659                                 throw new ArgumentNullException ("propertyGroupToRemove");
 660
 661                         groupingCollection.Remove (propertyGroupToRemove);
 662                         MarkProjectAsDirty ();
 663                 }
 664
 665                 [MonoTODO]
 666                 // NOTE: does not modify imported projects
 667                 public void RemovePropertyGroupsWithMatchingCondition (string matchCondition)
 668                 {
 669                         throw new NotImplementedException ();
 670                 }
 671
 672                 [MonoTODO]
 673                 public void ResetBuildStatus ()
 674                 {
 675                         // hack to allow built targets to be removed
 676                         building = true;
 677                         Reevaluate ();
 678                         building = false;
 679                 }
 680
 681                 public void Save (string projectFileName)
 682                 {
 683                         Save (projectFileName, Encoding.Default);
 684                         isDirty = false;
 685                 }
 686
 687                 [MonoTODO ("Ignores encoding")]
 688                 public void Save (string projectFileName, Encoding encoding)
 689                 {
 690                         xmlDocument.Save (projectFileName);
 691                         isDirty = false;
 692                 }
 693
 694                 public void Save (TextWriter outTextWriter)
 695                 {
 696                         xmlDocument.Save (outTextWriter);
 697                         isDirty = false;
 698                 }
 699
 700                 public void SetImportedProperty (string propertyName,
 701                                                  string propertyValue,
 702                                                  string condition,
 703                                                  Project importProject)
 704                 {
 705                         SetImportedProperty (propertyName, propertyValue, condition, importProject,
 706                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 707                 }
 708
 709                 public void SetImportedProperty (string propertyName,
 710                                                  string propertyValue,
 711                                                  string condition,
 712                                                  Project importedProject,
 713                                                  PropertyPosition position)
 714                 {
 715                         SetImportedProperty (propertyName, propertyValue, condition, importedProject,
 716                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 717                 }
 718
 719                 [MonoTODO]
 720                 public void SetImportedProperty (string propertyName,
 721                                                  string propertyValue,
 722                                                  string condition,
 723                                                  Project importedProject,
 724                                                  PropertyPosition position,
 725                                                  bool treatPropertyValueAsLiteral)
 726                 {
 727                         throw new NotImplementedException ();
 728                 }
 729
 730                 public void SetProjectExtensions (string id, string xmlText)
 731                 {
 732                         if (id == null)
 733                                 throw new ArgumentNullException ("id");
 734                         if (xmlText == null)
 735                                 throw new ArgumentNullException ("xmlText");
 736
 737                         XmlNode projectExtensions, node;
 738
 739                         projectExtensions = xmlDocument.SelectSingleNode ("/tns:Project/tns:ProjectExtensions", XmlNamespaceManager);
 740
 741                         if (projectExtensions == null) {
 742                                 projectExtensions = xmlDocument.CreateElement ("ProjectExtensions", XmlNamespace);
 743                                 xmlDocument.DocumentElement.AppendChild (projectExtensions);
 744
 745                                 node = xmlDocument.CreateElement (id, XmlNamespace);
 746                                 node.InnerXml = xmlText;
 747                                 projectExtensions.AppendChild (node);
 748                         } else {
 749                                 node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 750
 751                                 if (node == null) {
 752                                         node = xmlDocument.CreateElement (id, XmlNamespace);
 753                                         projectExtensions.AppendChild (node);
 754                                 }
 755
 756                                 node.InnerXml = xmlText;
 757
 758                         }
 759
 760                         MarkProjectAsDirty ();
 761                 }
 762
 763                 public void SetProperty (string propertyName,
 764                                          string propertyValue)
 765                 {
 766                         SetProperty (propertyName, propertyValue, "true",
 767                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 768                 }
 769
 770                 public void SetProperty (string propertyName,
 771                                          string propertyValue,
 772                                          string condition)
 773                 {
 774                         SetProperty (propertyName, propertyValue, condition,
 775                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 776                 }
 777
 778                 public void SetProperty (string propertyName,
 779                                          string propertyValue,
 780                                          string condition,
 781                                          PropertyPosition position)
 782                 {
 783                         SetProperty (propertyName, propertyValue, condition,
 784                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 785                 }
 786
 787                 [MonoTODO]
 788                 public void SetProperty (string propertyName,
 789                                          string propertyValue,
 790                                          string condition,
 791                                          PropertyPosition position,
 792                                          bool treatPropertyValueAsLiteral)
 793                 {
 794                         throw new NotImplementedException ();
 795                 }
 796
 797                 internal void Unload ()
 798                 {
 799                         unloaded = true;
 800                 }
 801
 802                 internal void CheckUnloaded ()
 803                 {
 804                         if (unloaded)
 805                                 throw new InvalidOperationException ("This project object has been unloaded from the MSBuild engine and is no longer valid.");
 806                 }
 807
 808                 internal void NeedToReevaluate ()
 809                 {
 810                         needToReevaluate = true;
 811                 }
 812
 813                 // Does the actual loading.
 814                 void DoLoad (TextReader textReader)
 815                 {
 816                         try {
 817                                 ParentEngine.RemoveLoadedProject (this);
 818
 819                                 xmlDocument.Load (textReader);
 820
 821                                 if (xmlDocument.DocumentElement.Name == "VisualStudioProject")
 822                                         throw new InvalidProjectFileException (String.Format (
 823                                                         "Project file '{0}' is a VS2003 project, which is not " +
 824                                                         "supported by xbuild. You need to convert it to msbuild " +
 825                                                         "format to build with xbuild.", fullFileName));
 826
 827                                 if (SchemaFile != null) {
 828                                         xmlDocument.Schemas.Add (XmlSchema.Read (
 829                                                                 new StreamReader (SchemaFile), ValidationCallBack));
 830                                         xmlDocument.Validate (ValidationCallBack);
 831                                 }
 832
 833                                 if (xmlDocument.DocumentElement.Name != "Project") {
 834                                         throw new InvalidProjectFileException (String.Format (
 835                                                 "The element <{0}> is unrecognized, or not supported in this context.", xmlDocument.DocumentElement.Name));
 836                                 }
 837
 838                                 if (xmlDocument.DocumentElement.GetAttribute ("xmlns") != ns) {
 839                                         throw new InvalidProjectFileException (
 840                                                 @"The default XML namespace of the project must be the MSBuild XML namespace." +
 841                                                 " If the project is authored in the MSBuild 2003 format, please add " +
 842                                                 "xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\" to the <Project> element. " +
 843                                                 "If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format.  ");
 844                                 }
 845                                 ProcessXml ();
 846                                 ParentEngine.AddLoadedProject (this);
 847                         } catch (Exception e) {
 848                                 throw new InvalidProjectFileException (String.Format ("{0}: {1}",
 849                                                         fullFileName, e.Message), e);
 850                         } finally {
 851                                 if (textReader != null)
 852                                         textReader.Close ();
 853                         }
 854                 }
 855
 856                 void Reevaluate ()
 857                 {
 858                         ProcessXml ();
 859                 }
 860
 861                 void ProcessXml ()
 862                 {
 863                         groupingCollection = new GroupingCollection (this);
 864                         imports = new ImportCollection (groupingCollection);
 865                         usingTasks = new UsingTaskCollection (this);
 866                         itemGroups = new BuildItemGroupCollection (groupingCollection);
 867                         propertyGroups = new BuildPropertyGroupCollection (groupingCollection);
 868                         targets = new TargetCollection (this);
 869                         last_item_group_containing = new Dictionary <string, BuildItemGroup> ();
 870
 871                         string effective_tools_version = GetToolsVersionToUse (false);
 872                         taskDatabase = new TaskDatabase ();
 873                         taskDatabase.CopyTasks (ParentEngine.GetDefaultTasks (effective_tools_version));
 874
 875                         initialTargets = new List<string> ();
 876                         defaultTargets = new string [0];
 877                         PrepareForEvaluate (effective_tools_version);
 878                         ProcessElements (xmlDocument.DocumentElement, null);
 879
 880                         isDirty = false;
 881                         Evaluate ();
 882                 }
 883
 884                 void ProcessProjectAttributes (XmlAttributeCollection attributes)
 885                 {
 886                         foreach (XmlAttribute attr in attributes) {
 887                                 switch (attr.Name) {
 888                                 case "InitialTargets":
 889                                         initialTargets.AddRange (attr.Value.Split (
 890                                                                         new char [] {';', ' '},
 891                                                                         StringSplitOptions.RemoveEmptyEntries));
 892                                         break;
 893                                 case "DefaultTargets":
 894                                         // first non-empty DefaultTargets found is used
 895                                         if (defaultTargets == null || defaultTargets.Length == 0)
 896                                                 defaultTargets = attr.Value.Split (new char [] {';', ' '},
 897                                                         StringSplitOptions.RemoveEmptyEntries);
 898                                         EvaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets",
 899                                                                 DefaultTargets, PropertyType.Reserved));
 900                                         break;
 901                                 }
 902                         }
 903                 }
 904
 905                 internal void ProcessElements (XmlElement rootElement, ImportedProject ip)
 906                 {
 907                         ProcessProjectAttributes (rootElement.Attributes);
 908                         foreach (XmlNode xn in rootElement.ChildNodes) {
 909                                 if (xn is XmlElement) {
 910                                         XmlElement xe = (XmlElement) xn;
 911                                         switch (xe.Name) {
 912                                         case "ProjectExtensions":
 913                                                 AddProjectExtensions (xe);
 914                                                 break;
 915                                         case "Warning":
 916                                         case "Message":
 917                                         case "Error":
 918                                                 AddMessage (xe);
 919                                                 break;
 920                                         case "Target":
 921                                                 AddTarget (xe, ip);
 922                                                 break;
 923                                         case "UsingTask":
 924                                                 AddUsingTask (xe, ip);
 925                                                 break;
 926                                         case "Import":
 927                                                 AddImport (xe, ip, true);
 928                                                 break;
 929                                         case "ItemGroup":
 930                                                 AddItemGroup (xe, ip);
 931                                                 break;
 932                                         case "PropertyGroup":
 933                                                 AddPropertyGroup (xe, ip);
 934                                                 break;
 935                                         case  "Choose":
 936                                                 AddChoose (xe, ip);
 937                                                 break;
 938                                         default:
 939                                                 throw new InvalidProjectFileException (String.Format ("Invalid element '{0}' in project file.", xe.Name));
 940                                         }
 941                                 }
 942                         }
 943                 }
 944
 945                 void PrepareForEvaluate (string effective_tools_version)
 946                 {
 947                         evaluatedItems = new BuildItemGroup (null, this, null, true);
 948                         evaluatedItemsIgnoringCondition = new BuildItemGroup (null, this, null, true);
 949                         evaluatedItemsByName = new Dictionary <string, BuildItemGroup> (StringComparer.InvariantCultureIgnoreCase);
 950                         evaluatedItemsByNameIgnoringCondition = new Dictionary <string, BuildItemGroup> (StringComparer.InvariantCultureIgnoreCase);
 951                         if (building && current_settings == BuildSettings.None)
 952                                 RemoveBuiltTargets ();
 953
 954                         InitializeProperties (effective_tools_version);
 955                 }
 956
 957                 void Evaluate ()
 958                 {
 959                         groupingCollection.Evaluate ();
 960
 961                         //FIXME: UsingTasks aren't really evaluated. (shouldn't use expressions or anything)
 962                         foreach (UsingTask usingTask in UsingTasks)
 963                                 usingTask.Evaluate ();
 964                 }
 965
 966                 // Removes entries of all earlier built targets for this project
 967                 void RemoveBuiltTargets ()
 968                 {
 969                         ParentEngine.ClearBuiltTargetsForProject (this);
 970                 }
 971
 972                 void InitializeProperties (string effective_tools_version)
 973                 {
 974                         BuildProperty bp;
 975
 976                         evaluatedProperties = new BuildPropertyGroup (null, null, null, true);
 977                         conditionedProperties = new Dictionary<string, List<string>> ();
 978
 979                         foreach (BuildProperty gp in GlobalProperties) {
 980                                 bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
 981                                 evaluatedProperties.AddProperty (bp);
 982                         }
 983
 984                         foreach (BuildProperty gp in GlobalProperties)
 985                                 ParentEngine.GlobalProperties.AddProperty (gp);
 986
 987                         // add properties that we dont have from parent engine's
 988                         // global properties
 989                         foreach (BuildProperty gp in ParentEngine.GlobalProperties) {
 990                                 if (evaluatedProperties [gp.Name] == null) {
 991                                         bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
 992                                         evaluatedProperties.AddProperty (bp);
 993                                 }
 994                         }
 995
 996                         foreach (DictionaryEntry de in Environment.GetEnvironmentVariables ()) {
 997                                 bp = new BuildProperty ((string) de.Key, (string) de.Value, PropertyType.Environment);
 998                                 evaluatedProperties.AddProperty (bp);
 999                         }
1000
1001                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFile", Path.GetFileName (fullFileName),
1002                                                 PropertyType.Reserved));
1003                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFullPath", fullFileName, PropertyType.Reserved));
1004                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectName",
1005                                                 Path.GetFileNameWithoutExtension (fullFileName),
1006                                                 PropertyType.Reserved));
1007                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectExtension",
1008                                                 Path.GetExtension (fullFileName),
1009                                                 PropertyType.Reserved));
1010
1011                         string toolsPath = parentEngine.Toolsets [effective_tools_version].ToolsPath;
1012                         if (toolsPath == null)
1013                                 throw new Exception (String.Format ("Invalid tools version '{0}', no tools path set for this.", effective_tools_version));
1014                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildBinPath", toolsPath, PropertyType.Reserved));
1015                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsPath", toolsPath, PropertyType.Reserved));
1016                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsRoot", Path.GetDirectoryName (toolsPath), PropertyType.Reserved));
1017                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsVersion", effective_tools_version, PropertyType.Reserved));
1018                         SetExtensionsPathProperties (DefaultExtensionsPath);
1019                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets", DefaultTargets, PropertyType.Reserved));
1020                         evaluatedProperties.AddProperty (new BuildProperty ("OS", OS, PropertyType.Environment));
1021
1022                         // FIXME: make some internal method that will work like GetDirectoryName but output String.Empty on null/String.Empty
1023                         string projectDir;
1024                         if (FullFileName == String.Empty)
1025                                 projectDir = Environment.CurrentDirectory;
1026                         else
1027                                 projectDir = Path.GetDirectoryName (FullFileName);
1028
1029                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDirectory", projectDir, PropertyType.Reserved));
1030
1031                         if (this_file_property_stack.Count > 0)
1032                                 // Just re-inited the properties, but according to the stack,
1033                                 // we should have a MSBuild*This* property set
1034                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1035                 }
1036
1037                 internal void SetExtensionsPathProperties (string extn_path)
1038                 {
1039                         if (!String.IsNullOrEmpty (extn_path)) {
1040                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath", extn_path, PropertyType.Reserved));
1041                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath32", extn_path, PropertyType.Reserved));
1042                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath64", extn_path, PropertyType.Reserved));
1043                         }
1044                 }
1045
1046                 // precedence:
1047                 // ToolsVersion property
1048                 // ToolsVersion attribute on the project
1049                 // parentEngine's DefaultToolsVersion
1050                 string GetToolsVersionToUse (bool emitWarning)
1051                 {
1052                         if (!String.IsNullOrEmpty (ToolsVersion))
1053                                 return ToolsVersion;
1054
1055                         if (!HasToolsVersionAttribute)
1056                                 return parentEngine.DefaultToolsVersion;
1057
1058                         if (parentEngine.Toolsets [DefaultToolsVersion] == null) {
1059                                 if (emitWarning)
1060                                         LogWarning (FullFileName, "Project has unknown ToolsVersion '{0}'. Using the default tools version '{1}' instead.",
1061                                                 DefaultToolsVersion, parentEngine.DefaultToolsVersion);
1062                                 return parentEngine.DefaultToolsVersion;
1063                         }
1064
1065                         return DefaultToolsVersion;
1066                 }
1067
1068                 void AddProjectExtensions (XmlElement xmlElement)
1069                 {
1070                 }
1071
1072                 void AddMessage (XmlElement xmlElement)
1073                 {
1074                 }
1075
1076                 void AddTarget (XmlElement xmlElement, ImportedProject importedProject)
1077                 {
1078                         Target target = new Target (xmlElement, this, importedProject);
1079                         targets.AddTarget (target);
1080
1081                         if (firstTargetName == null)
1082                                 firstTargetName = target.Name;
1083                 }
1084
1085                 void AddUsingTask (XmlElement xmlElement, ImportedProject importedProject)
1086                 {
1087                         UsingTask usingTask;
1088
1089                         usingTask = new UsingTask (xmlElement, this, importedProject);
1090                         UsingTasks.Add (usingTask);
1091                 }
1092
1093                 void AddImport (XmlElement xmlElement, ImportedProject importingProject, bool evaluate_properties)
1094                 {
1095                         // eval all the properties etc till the import
1096                         if (evaluate_properties)
1097                                 groupingCollection.Evaluate (EvaluationType.Property);
1098
1099                         try {
1100                                 PushThisFileProperty (importingProject != null ? importingProject.FullFileName : FullFileName);
1101
1102                                 string project_attribute = xmlElement.GetAttribute ("Project");
1103                                 if (String.IsNullOrEmpty (project_attribute))
1104                                         throw new InvalidProjectFileException ("The required attribute \"Project\" is missing from element <Import>.");
1105
1106                                 Import.ForEachExtensionPathTillFound (xmlElement, this, importingProject,
1107                                         (importPath, from_source_msg) => AddSingleImport (xmlElement, importPath, importingProject, from_source_msg));
1108                         } finally {
1109                                 PopThisFileProperty ();
1110                         }
1111                 }
1112
1113                 bool AddSingleImport (XmlElement xmlElement, string projectPath, ImportedProject importingProject, string from_source_msg)
1114                 {
1115                         Import import = new Import (xmlElement, projectPath, this, importingProject);
1116                         if (!ConditionParser.ParseAndEvaluate (import.Condition, this)) {
1117                                 ParentEngine.LogMessage (MessageImportance.Low,
1118                                                 "Not importing project '{0}' as the condition '{1}' is false",
1119                                                 import.ProjectPath, import.Condition);
1120                                 return false;
1121                         }
1122
1123                         Import existingImport;
1124                         if (Imports.TryGetImport (import, out existingImport)) {
1125                                 if (importingProject == null)
1126                                         LogWarning (fullFileName,
1127                                                         "Cannot import project '{0}' again. It was already imported by " +
1128                                                         "'{1}'. Ignoring.",
1129                                                         projectPath, existingImport.ContainedInProjectFileName);
1130                                 else
1131                                         LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1132                                                 "A circular reference was found involving the import of '{0}'. " +
1133                                                 "It was earlier imported by '{1}'. Only " +
1134                                                 "the first import of this file will be used, ignoring others.",
1135                                                 import.EvaluatedProjectPath, existingImport.ContainedInProjectFileName);
1136
1137                                 return false;
1138                         }
1139
1140                         if (String.Compare (fullFileName, import.EvaluatedProjectPath) == 0) {
1141                                 LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1142                                                 "The main project file was imported here, which creates a circular " +
1143                                                 "reference. Ignoring this import.");
1144
1145                                 return false;
1146                         }
1147
1148                         Imports.Add (import);
1149                         string importingFile = importingProject != null ? importingProject.FullFileName : FullFileName;
1150                         ParentEngine.LogMessage (MessageImportance.Low,
1151                                         "{0}: Importing project {1} {2}",
1152                                         importingFile, import.EvaluatedProjectPath, from_source_msg);
1153
1154                         import.Evaluate (project_load_settings == ProjectLoadSettings.IgnoreMissingImports);
1155                         return true;
1156                 }
1157
1158                 void AddItemGroup (XmlElement xmlElement, ImportedProject importedProject)
1159                 {
1160                         BuildItemGroup big = new BuildItemGroup (xmlElement, this, importedProject, false);
1161                         ItemGroups.Add (big);
1162                 }
1163
1164                 void AddPropertyGroup (XmlElement xmlElement, ImportedProject importedProject)
1165                 {
1166                         BuildPropertyGroup bpg = new BuildPropertyGroup (xmlElement, this, importedProject, false);
1167                         PropertyGroups.Add (bpg);
1168                 }
1169
1170                 void AddChoose (XmlElement xmlElement, ImportedProject importedProject)
1171                 {
1172                         BuildChoose bc = new BuildChoose (xmlElement, this, importedProject);
1173                         groupingCollection.Add (bc);
1174                 }
1175
1176                 static void ValidationCallBack (object sender, ValidationEventArgs e)
1177                 {
1178                         Console.WriteLine ("Validation Error: {0}", e.Message);
1179                 }
1180
1181                 public bool BuildEnabled {
1182                         get {
1183                                 return buildEnabled;
1184                         }
1185                         set {
1186                                 buildEnabled = value;
1187                         }
1188                 }
1189
1190                 [MonoTODO]
1191                 public Encoding Encoding {
1192                         get { return encoding; }
1193                 }
1194
1195                 public string DefaultTargets {
1196                         get {
1197                                 return String.Join ("; ", defaultTargets);
1198                         }
1199                         set {
1200                                 xmlDocument.DocumentElement.SetAttribute ("DefaultTargets", value);
1201                                 if (value != null)
1202                                         defaultTargets = value.Split (new char [] {';', ' '},
1203                                                         StringSplitOptions.RemoveEmptyEntries);
1204                         }
1205                 }
1206
1207                 public BuildItemGroup EvaluatedItems {
1208                         get {
1209                                 if (needToReevaluate) {
1210                                         needToReevaluate = false;
1211                                         Reevaluate ();
1212                                 }
1213                                 return evaluatedItems;
1214                         }
1215                 }
1216
1217                 public BuildItemGroup EvaluatedItemsIgnoringCondition {
1218                         get {
1219                                 if (needToReevaluate) {
1220                                         needToReevaluate = false;
1221                                         Reevaluate ();
1222                                 }
1223                                 return evaluatedItemsIgnoringCondition;
1224                         }
1225                 }
1226
1227                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByName {
1228                         get {
1229                                 // FIXME: do we need to do this here?
1230                                 if (needToReevaluate) {
1231                                         needToReevaluate = false;
1232                                         Reevaluate ();
1233                                 }
1234                                 return evaluatedItemsByName;
1235                         }
1236                 }
1237
1238                 internal IEnumerable EvaluatedItemsByNameAsDictionaryEntries {
1239                         get {
1240                                 if (EvaluatedItemsByName.Count == 0)
1241                                         yield break;
1242
1243                                 foreach (KeyValuePair<string, BuildItemGroup> pair in EvaluatedItemsByName) {
1244                                         foreach (BuildItem bi in pair.Value)
1245                                                 yield return new DictionaryEntry (pair.Key, bi.ConvertToITaskItem (null, ExpressionOptions.ExpandItemRefs));
1246                                 }
1247                         }
1248                 }
1249
1250                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByNameIgnoringCondition {
1251                         get {
1252                                 // FIXME: do we need to do this here?
1253                                 if (needToReevaluate) {
1254                                         needToReevaluate = false;
1255                                         Reevaluate ();
1256                                 }
1257                                 return evaluatedItemsByNameIgnoringCondition;
1258                         }
1259                 }
1260
1261                 // For batching implementation
1262                 Dictionary<string, BuildItemGroup> perBatchItemsByName;
1263                 Dictionary<string, BuildItemGroup> commonItemsByName;
1264
1265                 struct Batch {
1266                         public Dictionary<string, BuildItemGroup> perBatchItemsByName;
1267                         public Dictionary<string, BuildItemGroup> commonItemsByName;
1268
1269                         public Batch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1270                         {
1271                                 this.perBatchItemsByName = perBatchItemsByName;
1272                                 this.commonItemsByName = commonItemsByName;
1273                         }
1274                 }
1275
1276                 Stack<Batch> Batches {
1277                         get { return batches; }
1278                 }
1279
1280                 internal void PushBatch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1281                 {
1282                         batches.Push (new Batch (perBatchItemsByName, commonItemsByName));
1283                         SetBatchedItems (perBatchItemsByName, commonItemsByName);
1284                 }
1285
1286                 internal void PopBatch ()
1287                 {
1288                         batches.Pop ();
1289                         if (batches.Count > 0) {
1290                                 Batch b = batches.Peek ();
1291                                 SetBatchedItems (b.perBatchItemsByName, b.commonItemsByName);
1292                         } else {
1293                                 SetBatchedItems (null, null);
1294                         }
1295                 }
1296
1297                 void SetBatchedItems (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1298                 {
1299                         this.perBatchItemsByName = perBatchItemsByName;
1300                         this.commonItemsByName = commonItemsByName;
1301                 }
1302
1303                 // Honors batching
1304                 internal bool TryGetEvaluatedItemByNameBatched (string itemName, out BuildItemGroup group)
1305                 {
1306                         if (perBatchItemsByName != null && perBatchItemsByName.TryGetValue (itemName, out group))
1307                                 return true;
1308
1309                         if (commonItemsByName != null && commonItemsByName.TryGetValue (itemName, out group))
1310                                 return true;
1311
1312                         group = null;
1313                         return EvaluatedItemsByName.TryGetValue (itemName, out group);
1314                 }
1315
1316                 internal string GetMetadataBatched (string itemName, string metadataName)
1317                 {
1318                         BuildItemGroup group = null;
1319                         if (itemName == null) {
1320                                 //unqualified, all items in a batch(bucket) have the
1321                                 //same metadata values
1322                                 group = GetFirst<BuildItemGroup> (perBatchItemsByName.Values);
1323                                 if (group == null)
1324                                         group = GetFirst<BuildItemGroup> (commonItemsByName.Values);
1325                         } else {
1326                                 //qualified
1327                                 TryGetEvaluatedItemByNameBatched (itemName, out group);
1328                         }
1329
1330                         if (group != null) {
1331                                 foreach (BuildItem item in group) {
1332                                         if (item.HasMetadata (metadataName))
1333                                                 return item.GetEvaluatedMetadata (metadataName);
1334                                 }
1335                         }
1336                         return String.Empty;
1337                 }
1338
1339                 internal IEnumerable<BuildItemGroup> GetAllItemGroups ()
1340                 {
1341                         if (perBatchItemsByName == null && commonItemsByName == null)
1342                                 foreach (BuildItemGroup group in EvaluatedItemsByName.Values)
1343                                         yield return group;
1344
1345                         if (perBatchItemsByName != null)
1346                                 foreach (BuildItemGroup group in perBatchItemsByName.Values)
1347                                         yield return group;
1348
1349                         if (commonItemsByName != null)
1350                                 foreach (BuildItemGroup group in commonItemsByName.Values)
1351                                         yield return group;
1352                 }
1353
1354                 T GetFirst<T> (ICollection<T> list)
1355                 {
1356                         if (list == null)
1357                                 return default (T);
1358
1359                         foreach (T t in list)
1360                                 return t;
1361
1362                         return default (T);
1363                 }
1364
1365                 // Used for MSBuild*This* set of properties
1366                 internal void PushThisFileProperty (string full_filename)
1367                 {
1368                         string last_file = this_file_property_stack.Count == 0 ? String.Empty : this_file_property_stack.Peek ();
1369                         this_file_property_stack.Push (full_filename);
1370                         if (last_file != full_filename)
1371                                 // first time, or different from previous one
1372                                 SetMSBuildThisFileProperties (full_filename);
1373                 }
1374
1375                 internal void PopThisFileProperty ()
1376                 {
1377                         string last_file = this_file_property_stack.Pop ();
1378                         if (this_file_property_stack.Count > 0 && last_file != this_file_property_stack.Peek ())
1379                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1380                 }
1381
1382                 void SetMSBuildThisFileProperties (string full_filename)
1383                 {
1384                         if (String.IsNullOrEmpty (full_filename))
1385                                 return;
1386
1387                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFile", Path.GetFileName (full_filename), PropertyType.Reserved));
1388                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileFullPath", full_filename, PropertyType.Reserved));
1389                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileName", Path.GetFileNameWithoutExtension (full_filename), PropertyType.Reserved));
1390                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileExtension", Path.GetExtension (full_filename), PropertyType.Reserved));
1391
1392                         string project_dir = Path.GetDirectoryName (full_filename) + Path.DirectorySeparatorChar;
1393                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectory", project_dir, PropertyType.Reserved));
1394                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectoryNoRoot",
1395                                                 project_dir.Substring (Path.GetPathRoot (project_dir).Length),
1396                                                 PropertyType.Reserved));
1397                 }
1398
1399
1400                 internal void LogWarning (string filename, string message, params object[] messageArgs)
1401                 {
1402                         BuildWarningEventArgs bwea = new BuildWarningEventArgs (
1403                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1404                                 null, null);
1405                         ParentEngine.EventSource.FireWarningRaised (this, bwea);
1406                 }
1407
1408                 internal void LogError (string filename, string message,
1409                                      params object[] messageArgs)
1410                 {
1411                         BuildErrorEventArgs beea = new BuildErrorEventArgs (
1412                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1413                                 null, null);
1414                         ParentEngine.EventSource.FireErrorRaised (this, beea);
1415                 }
1416
1417                 internal static string DefaultExtensionsPath {
1418                         get {
1419                                 if (extensions_path == null) {
1420                                         // NOTE: code from mcs/tools/gacutil/driver.cs
1421                                         PropertyInfo gac = typeof (System.Environment).GetProperty (
1422                                                         "GacPath", BindingFlags.Static | BindingFlags.NonPublic);
1423
1424                                         if (gac != null) {
1425                                                 MethodInfo get_gac = gac.GetGetMethod (true);
1426                                                 string gac_path = (string) get_gac.Invoke (null, null);
1427                                                 extensions_path = Path.GetFullPath (Path.Combine (
1428                                                                         gac_path, Path.Combine ("..", "xbuild")));
1429                                         }
1430                                 }
1431                                 return extensions_path;
1432                         }
1433                 }
1434
1435                 public BuildPropertyGroup EvaluatedProperties {
1436                         get {
1437                                 if (needToReevaluate) {
1438                                         needToReevaluate = false;
1439                                         Reevaluate ();
1440                                 }
1441                                 return evaluatedProperties;
1442                         }
1443                 }
1444
1445                 internal IEnumerable EvaluatedPropertiesAsDictionaryEntries {
1446                         get {
1447                                 foreach (BuildProperty bp in EvaluatedProperties)
1448                                         yield return new DictionaryEntry (bp.Name, bp.Value);
1449                         }
1450                 }
1451
1452                 public string FullFileName {
1453                         get { return fullFileName; }
1454                         set { fullFileName = value; }
1455                 }
1456
1457                 public BuildPropertyGroup GlobalProperties {
1458                         get { return globalProperties; }
1459                         set {
1460                                 if (value == null)
1461                                         throw new ArgumentNullException ("value");
1462
1463                                 if (value.FromXml)
1464                                         throw new InvalidOperationException ("GlobalProperties can not be set to persisted property group.");
1465
1466                                 globalProperties = value;
1467                         }
1468                 }
1469
1470                 public bool IsDirty {
1471                         get { return isDirty; }
1472                 }
1473
1474                 public bool IsValidated {
1475                         get { return isValidated; }
1476                         set { isValidated = value; }
1477                 }
1478
1479                 public BuildItemGroupCollection ItemGroups {
1480                         get { return itemGroups; }
1481                 }
1482
1483                 public ImportCollection Imports {
1484                         get { return imports; }
1485                 }
1486
1487                 public string InitialTargets {
1488                         get {
1489                                 return String.Join ("; ", initialTargets.ToArray ());
1490                         }
1491                         set {
1492                                 initialTargets.Clear ();
1493                                 xmlDocument.DocumentElement.SetAttribute ("InitialTargets", value);
1494                                 if (value != null)
1495                                         initialTargets.AddRange (value.Split (
1496                                                                 new char [] {';', ' '}, StringSplitOptions.RemoveEmptyEntries));
1497                         }
1498                 }
1499
1500                 public Engine ParentEngine {
1501                         get { return parentEngine; }
1502                 }
1503
1504                 public BuildPropertyGroupCollection PropertyGroups {
1505                         get { return propertyGroups; }
1506                 }
1507
1508                 public string SchemaFile {
1509                         get { return schemaFile; }
1510                         set { schemaFile = value; }
1511                 }
1512
1513                 public TargetCollection Targets {
1514                         get { return targets; }
1515                 }
1516
1517                 public DateTime TimeOfLastDirty {
1518                         get { return timeOfLastDirty; }
1519                 }
1520
1521                 public UsingTaskCollection UsingTasks {
1522                         get { return usingTasks; }
1523                 }
1524
1525                 [MonoTODO]
1526                 public string Xml {
1527                         get { return xmlDocument.InnerXml; }
1528                 }
1529
1530                 // corresponds to the xml attribute
1531                 public string DefaultToolsVersion {
1532                         get {
1533                                 if (xmlDocument != null)
1534                                         return xmlDocument.DocumentElement.GetAttribute ("ToolsVersion");
1535                                 return null;
1536                         }
1537                         set {
1538                                 if (xmlDocument != null)
1539                                         xmlDocument.DocumentElement.SetAttribute ("ToolsVersion", value);
1540                         }
1541                 }
1542
1543                 public bool HasToolsVersionAttribute {
1544                         get {
1545                                 return xmlDocument != null && xmlDocument.DocumentElement.HasAttribute ("ToolsVersion");
1546                         }
1547                 }
1548
1549                 public string ToolsVersion {
1550                         get; internal set;
1551                 }
1552
1553                 internal Dictionary <string, BuildItemGroup> LastItemGroupContaining {
1554                         get { return last_item_group_containing; }
1555                 }
1556
1557                 internal static XmlNamespaceManager XmlNamespaceManager {
1558                         get {
1559                                 if (manager == null) {
1560                                         manager = new XmlNamespaceManager (new NameTable ());
1561                                         manager.AddNamespace ("tns", ns);
1562                                 }
1563
1564                                 return manager;
1565                         }
1566                 }
1567
1568                 internal TaskDatabase TaskDatabase {
1569                         get { return taskDatabase; }
1570                 }
1571
1572                 internal XmlDocument XmlDocument {
1573                         get { return xmlDocument; }
1574                 }
1575
1576                 internal static string XmlNamespace {
1577                         get { return ns; }
1578                 }
1579
1580                 static string OS {
1581                         get {
1582                                 PlatformID pid = Environment.OSVersion.Platform;
1583                                 switch ((int)pid) {
1584                                 case 128:
1585                                 case 4:
1586                                         return "Unix";
1587                                 case 6:
1588                                         return "OSX";
1589                                 default:
1590                                         return "Windows_NT";
1591                                 }
1592                         }
1593                 }
1594
1595         }
1596 }
1597
1598 #endif