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 using System;
  31 using System.Collections;
  32 using System.Collections.Generic;
  33 using System.Collections.Specialized;
  34 using System.IO;
  35 using System.Linq;
  36 using System.Reflection;
  37 using System.Text;
  38 using System.Xml;
  39 using System.Xml.Schema;
  40 using Microsoft.Build.Framework;
  41 using Microsoft.Build.Utilities;
  42 using Mono.XBuild.Framework;
  43 using Mono.XBuild.CommandLine;
  44
  45 namespace Microsoft.Build.BuildEngine {
  46         public class Project {
  47
  48                 bool                            buildEnabled;
  49                 Dictionary <string, List <string>>      conditionedProperties;
  50                 string[]                        defaultTargets;
  51                 Encoding                        encoding;
  52                 BuildItemGroup                  evaluatedItems;
  53                 BuildItemGroup                  evaluatedItemsIgnoringCondition;
  54                 Dictionary <string, BuildItemGroup>     evaluatedItemsByName;
  55                 Dictionary <string, BuildItemGroup>     evaluatedItemsByNameIgnoringCondition;
  56                 BuildPropertyGroup              evaluatedProperties;
  57                 string                          firstTargetName;
  58                 string                          fullFileName;
  59                 BuildPropertyGroup              globalProperties;
  60                 GroupingCollection              groupingCollection;
  61                 bool                            isDirty;
  62                 bool                            isValidated;
  63                 BuildItemGroupCollection        itemGroups;
  64                 ImportCollection                imports;
  65                 List<string>                    initialTargets;
  66                 Dictionary <string, BuildItemGroup> last_item_group_containing;
  67                 bool                            needToReevaluate;
  68                 Engine                          parentEngine;
  69                 BuildPropertyGroupCollection    propertyGroups;
  70                 string                          schemaFile;
  71                 TaskDatabase                    taskDatabase;
  72                 TargetCollection                targets;
  73                 DateTime                        timeOfLastDirty;
  74                 UsingTaskCollection             usingTasks;
  75                 XmlDocument                     xmlDocument;
  76                 bool                            unloaded;
  77                 bool                            initialTargetsBuilt;
  78                 bool                            building;
  79                 BuildSettings                   current_settings;
  80                 Stack<Batch>                    batches;
  81
  82                 // This is used to keep track of "current" file,
  83                 // which is then used to set the reserved properties
  84                 // $(MSBuildThisFile*)
  85                 Stack<string> this_file_property_stack;
  86                 ProjectLoadSettings             project_load_settings;
  87
  88
  89                 static string extensions_path;
  90                 static XmlNamespaceManager      manager;
  91                 static string ns = "http://schemas.microsoft.com/developer/msbuild/2003";
  92
  93                 public Project ()
  94                         : this (Engine.GlobalEngine)
  95                 {
  96                 }
  97
  98                 public Project (Engine engine) : this (engine, null)
  99                 {
 100                 }
 101
 102                 public Project (Engine engine, string toolsVersion)
 103                 {
 104                         parentEngine  = engine;
 105                         ToolsVersion = toolsVersion;
 106
 107                         buildEnabled = ParentEngine.BuildEnabled;
 108                         xmlDocument = new XmlDocument ();
 109                         xmlDocument.PreserveWhitespace = false;
 110                         xmlDocument.AppendChild (xmlDocument.CreateElement ("Project", XmlNamespace));
 111                         xmlDocument.DocumentElement.SetAttribute ("xmlns", ns);
 112
 113                         fullFileName = String.Empty;
 114                         timeOfLastDirty = DateTime.Now;
 115                         current_settings = BuildSettings.None;
 116                         project_load_settings = ProjectLoadSettings.None;
 117
 118                         encoding = null;
 119
 120                         initialTargets = new List<string> ();
 121                         defaultTargets = new string [0];
 122                         batches = new Stack<Batch> ();
 123                         this_file_property_stack = new Stack<string> ();
 124
 125                         globalProperties = new BuildPropertyGroup (null, this, null, false);
 126                         foreach (BuildProperty bp in parentEngine.GlobalProperties)
 127                                 GlobalProperties.AddProperty (bp.Clone (true));
 128
 129                         ProcessXml ();
 130
 131                 }
 132
 133                 [MonoTODO ("Not tested")]
 134                 public void AddNewImport (string importLocation,
 135                                           string importCondition)
 136                 {
 137                         if (importLocation == null)
 138                                 throw new ArgumentNullException ("importLocation");
 139
 140                         XmlElement importElement = xmlDocument.CreateElement ("Import", XmlNamespace);
 141                         xmlDocument.DocumentElement.AppendChild (importElement);
 142                         importElement.SetAttribute ("Project", importLocation);
 143                         if (!String.IsNullOrEmpty (importCondition))
 144                                 importElement.SetAttribute ("Condition", importCondition);
 145
 146                         AddImport (importElement, null, false);
 147                         MarkProjectAsDirty ();
 148                         NeedToReevaluate ();
 149                 }
 150
 151                 public BuildItem AddNewItem (string itemName,
 152                                              string itemInclude)
 153                 {
 154                         return AddNewItem (itemName, itemInclude, false);
 155                 }
 156
 157                 [MonoTODO ("Adds item not in the same place as MS")]
 158                 public BuildItem AddNewItem (string itemName,
 159                                              string itemInclude,
 160                                              bool treatItemIncludeAsLiteral)
 161                 {
 162                         BuildItemGroup big;
 163
 164                         if (itemGroups.Count == 0)
 165                                 big = AddNewItemGroup ();
 166                         else {
 167                                 if (last_item_group_containing.ContainsKey (itemName)) {
 168                                         big = last_item_group_containing [itemName];
 169                                 } else {
 170                                         // FIXME: not tested
 171                                         BuildItemGroup [] groups = new BuildItemGroup [itemGroups.Count];
 172                                         itemGroups.CopyTo (groups, 0);
 173                                         big = groups [0];
 174                                 }
 175                         }
 176
 177                         BuildItem item = big.AddNewItem (itemName, itemInclude, treatItemIncludeAsLiteral);
 178
 179                         MarkProjectAsDirty ();
 180                         NeedToReevaluate ();
 181
 182                         return item;
 183                 }
 184
 185                 [MonoTODO ("Not tested")]
 186                 public BuildItemGroup AddNewItemGroup ()
 187                 {
 188                         XmlElement element = xmlDocument.CreateElement ("ItemGroup", XmlNamespace);
 189                         xmlDocument.DocumentElement.AppendChild (element);
 190
 191                         BuildItemGroup big = new BuildItemGroup (element, this, null, false);
 192                         itemGroups.Add (big);
 193                         MarkProjectAsDirty ();
 194                         NeedToReevaluate ();
 195
 196                         return big;
 197                 }
 198
 199                 [MonoTODO ("Ignores insertAtEndOfProject")]
 200                 public BuildPropertyGroup AddNewPropertyGroup (bool insertAtEndOfProject)
 201                 {
 202                         XmlElement element = xmlDocument.CreateElement ("PropertyGroup", XmlNamespace);
 203                         xmlDocument.DocumentElement.AppendChild (element);
 204
 205                         BuildPropertyGroup bpg = new BuildPropertyGroup (element, this, null, false);
 206                         propertyGroups.Add (bpg);
 207                         MarkProjectAsDirty ();
 208                         NeedToReevaluate ();
 209
 210                         return bpg;
 211                 }
 212
 213                 [MonoTODO ("Not tested, isn't added to TaskDatabase (no reevaluation)")]
 214                 public void AddNewUsingTaskFromAssemblyFile (string taskName,
 215                                                              string assemblyFile)
 216                 {
 217                         if (taskName == null)
 218                                 throw new ArgumentNullException ("taskName");
 219                         if (assemblyFile == null)
 220                                 throw new ArgumentNullException ("assemblyFile");
 221
 222                         XmlElement element = xmlDocument.CreateElement ("UsingTask", XmlNamespace);
 223                         xmlDocument.DocumentElement.AppendChild (element);
 224                         element.SetAttribute ("TaskName", taskName);
 225                         element.SetAttribute ("AssemblyFile", assemblyFile);
 226
 227                         UsingTask ut = new UsingTask (element, this, null);
 228                         usingTasks.Add (ut);
 229                         MarkProjectAsDirty ();
 230                 }
 231
 232                 [MonoTODO ("Not tested, isn't added to TaskDatabase (no reevaluation)")]
 233                 public void AddNewUsingTaskFromAssemblyName (string taskName,
 234                                                              string assemblyName)
 235                 {
 236                         if (taskName == null)
 237                                 throw new ArgumentNullException ("taskName");
 238                         if (assemblyName == null)
 239                                 throw new ArgumentNullException ("assemblyName");
 240
 241                         XmlElement element = xmlDocument.CreateElement ("UsingTask", XmlNamespace);
 242                         xmlDocument.DocumentElement.AppendChild (element);
 243                         element.SetAttribute ("TaskName", taskName);
 244                         element.SetAttribute ("AssemblyName", assemblyName);
 245
 246                         UsingTask ut = new UsingTask (element, this, null);
 247                         usingTasks.Add (ut);
 248                         MarkProjectAsDirty ();
 249                 }
 250
 251                 [MonoTODO ("Not tested")]
 252                 public bool Build ()
 253                 {
 254                         return Build (new string [0]);
 255                 }
 256
 257                 [MonoTODO ("Not tested")]
 258                 public bool Build (string targetName)
 259                 {
 260                         if (targetName == null)
 261                                 return Build ((string[]) null);
 262                         else
 263                                 return Build (new string [1] { targetName });
 264                 }
 265
 266                 [MonoTODO ("Not tested")]
 267                 public bool Build (string [] targetNames)
 268                 {
 269                         return Build (targetNames, null);
 270                 }
 271
 272                 [MonoTODO ("Not tested")]
 273                 public bool Build (string [] targetNames,
 274                                    IDictionary targetOutputs)
 275                 {
 276                         return Build (targetNames, targetOutputs, BuildSettings.None);
 277                 }
 278
 279                 [MonoTODO ("Not tested")]
 280                 public bool Build (string [] targetNames,
 281                                    IDictionary targetOutputs,
 282                                    BuildSettings buildFlags)
 283
 284                 {
 285                         bool result = false;
 286                         ParentEngine.StartProjectBuild (this, targetNames);
 287
 288                         // Invoking this to emit a warning in case of unsupported
 289                         // ToolsVersion
 290                         GetToolsVersionToUse (true);
 291
 292                         string current_directory = Environment.CurrentDirectory;
 293                         try {
 294                                 current_settings = buildFlags;
 295                                 if (!String.IsNullOrEmpty (fullFileName))
 296                                         Directory.SetCurrentDirectory (Path.GetDirectoryName (fullFileName));
 297                                 building = true;
 298                                 result = BuildInternal (targetNames, targetOutputs, buildFlags);
 299                         } catch (InvalidProjectFileException ie) {
 300                                 ParentEngine.LogErrorWithFilename (fullFileName, ie.Message);
 301                                 ParentEngine.LogMessage (MessageImportance.Low, String.Format ("{0}: {1}", fullFileName, ie.ToString ()));
 302                         } catch (Exception e) {
 303                                 ParentEngine.LogErrorWithFilename (fullFileName, e.Message);
 304                                 ParentEngine.LogMessage (MessageImportance.Low, String.Format ("{0}: {1}", fullFileName, e.ToString ()));
 305                                 throw;
 306                         } finally {
 307                                 ParentEngine.EndProjectBuild (this, result);
 308                                 current_settings = BuildSettings.None;
 309                                 Directory.SetCurrentDirectory (current_directory);
 310                                 building = false;
 311                         }
 312
 313                         return result;
 314                 }
 315
 316                 bool BuildInternal (string [] targetNames,
 317                                    IDictionary targetOutputs,
 318                                    BuildSettings buildFlags)
 319                 {
 320                         CheckUnloaded ();
 321                         if (buildFlags == BuildSettings.None) {
 322                                 needToReevaluate = false;
 323                                 Reevaluate ();
 324                         }
 325
 326                         ProcessBeforeAndAfterTargets ();
 327
 328                         if (targetNames == null || targetNames.Length == 0) {
 329                                 if (defaultTargets != null && defaultTargets.Length != 0) {
 330                                         targetNames = defaultTargets;
 331                                 } else if (firstTargetName != null) {
 332                                         targetNames = new string [1] { firstTargetName};
 333                                 } else {
 334                                         if (targets == null || targets.Count == 0) {
 335                                                 LogError (fullFileName, "No target found in the project");
 336                                                 return false;
 337                                         }
 338
 339                                         return false;
 340                                 }
 341                         }
 342
 343                         if (!initialTargetsBuilt) {
 344                                 foreach (string target in initialTargets) {
 345                                         if (!BuildTarget (target.Trim (), targetOutputs))
 346                                                 return false;
 347                                 }
 348                                 initialTargetsBuilt = true;
 349                         }
 350
 351                         foreach (string target in targetNames) {
 352                                 if (target == null)
 353                                         throw new ArgumentNullException ("Target name cannot be null");
 354
 355                                 if (!BuildTarget (target.Trim (), targetOutputs))
 356                                         return false;
 357                         }
 358
 359                         return true;
 360                 }
 361
 362                 bool BuildTarget (string target_name, IDictionary targetOutputs)
 363                 {
 364                         if (target_name == null)
 365                                 throw new ArgumentException ("targetNames cannot contain null strings");
 366
 367                         if (!targets.Exists (target_name)) {
 368                                 LogError (fullFileName, "Target named '{0}' not found in the project.", target_name);
 369                                 return false;
 370                         }
 371
 372                         string key = GetKeyForTarget (target_name);
 373                         if (!targets [target_name].Build (key))
 374                                 return false;
 375
 376                         ITaskItem[] outputs;
 377                         if (ParentEngine.BuiltTargetsOutputByName.TryGetValue (key, out outputs)) {
 378                                 if (targetOutputs != null)
 379                                         targetOutputs.Add (target_name, outputs);
 380                         }
 381                         return true;
 382                 }
 383
 384                 internal string GetKeyForTarget (string target_name)
 385                 {
 386                         return GetKeyForTarget (target_name, true);
 387                 }
 388
 389                 internal string GetKeyForTarget (string target_name, bool include_global_properties)
 390                 {
 391                         // target name is case insensitive
 392                         return fullFileName + ":" + target_name.ToLowerInvariant () +
 393                                         (include_global_properties ? (":" + GlobalPropertiesToString (GlobalProperties))
 394                                                                    : String.Empty);
 395                 }
 396
 397                 string GlobalPropertiesToString (BuildPropertyGroup bgp)
 398                 {
 399                         StringBuilder sb = new StringBuilder ();
 400                         foreach (BuildProperty bp in bgp)
 401                                 sb.AppendFormat (" {0}:{1}", bp.Name, bp.FinalValue);
 402                         return sb.ToString ();
 403                 }
 404
 405                 void ProcessBeforeAndAfterTargets ()
 406                 {
 407                         var beforeTable = Targets.AsIEnumerable ()
 408                                                 .SelectMany (target => GetTargetNamesFromString (target.BeforeTargets),
 409                                                                 (target, before_target) => new {before_target, name = target.Name})
 410                                                 .ToLookup (x => x.before_target, x => x.name)
 411                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 412
 413                         foreach (var pair in beforeTable) {
 414                                 if (targets.Exists (pair.Key))
 415                                         targets [pair.Key].BeforeThisTargets = pair.Value;
 416                                 else
 417                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 418                         }
 419
 420                         var afterTable = Targets.AsIEnumerable ()
 421                                                 .SelectMany (target => GetTargetNamesFromString (target.AfterTargets),
 422                                                                 (target, after_target) => new {after_target, name = target.Name})
 423                                                 .ToLookup (x => x.after_target, x => x.name)
 424                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 425
 426                         foreach (var pair in afterTable) {
 427                                 if (targets.Exists (pair.Key))
 428                                         targets [pair.Key].AfterThisTargets = pair.Value;
 429                                 else
 430                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 431                         }
 432                 }
 433
 434                 string[] GetTargetNamesFromString (string targets)
 435                 {
 436                         Expression expr = new Expression ();
 437                         expr.Parse (targets, ParseOptions.AllowItemsNoMetadataAndSplit);
 438                         return (string []) expr.ConvertTo (this, typeof (string []));
 439                 }
 440
 441                 [MonoTODO]
 442                 public string [] GetConditionedPropertyValues (string propertyName)
 443                 {
 444                         if (conditionedProperties.ContainsKey (propertyName))
 445                                 return conditionedProperties [propertyName].ToArray ();
 446                         else
 447                                 return new string [0];
 448                 }
 449
 450                 public BuildItemGroup GetEvaluatedItemsByName (string itemName)
 451                 {
 452                         if (needToReevaluate) {
 453                                 needToReevaluate = false;
 454                                 Reevaluate ();
 455                         }
 456
 457                         if (evaluatedItemsByName.ContainsKey (itemName))
 458                                 return evaluatedItemsByName [itemName];
 459                         else
 460                                 return new BuildItemGroup (this);
 461                 }
 462
 463                 public BuildItemGroup GetEvaluatedItemsByNameIgnoringCondition (string itemName)
 464                 {
 465                         if (needToReevaluate) {
 466                                 needToReevaluate = false;
 467                                 Reevaluate ();
 468                         }
 469
 470                         if (evaluatedItemsByNameIgnoringCondition.ContainsKey (itemName))
 471                                 return evaluatedItemsByNameIgnoringCondition [itemName];
 472                         else
 473                                 return new BuildItemGroup (this);
 474                 }
 475
 476                 public string GetEvaluatedProperty (string propertyName)
 477                 {
 478                         if (needToReevaluate) {
 479                                 needToReevaluate = false;
 480                                 Reevaluate ();
 481                         }
 482
 483                         if (propertyName == null)
 484                                 throw new ArgumentNullException ("propertyName");
 485
 486                         BuildProperty bp = evaluatedProperties [propertyName];
 487
 488                         return bp == null ? null : (string) bp;
 489                 }
 490
 491                 [MonoTODO ("We should remember that node and not use XPath to get it")]
 492                 public string GetProjectExtensions (string id)
 493                 {
 494                         if (id == null || id == String.Empty)
 495                                 return String.Empty;
 496
 497                         XmlNode node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 498
 499                         if (node == null)
 500                                 return String.Empty;
 501                         else
 502                                 return node.InnerXml;
 503                 }
 504
 505
 506                 public void Load (string projectFileName)
 507                 {
 508                         Load (projectFileName, ProjectLoadSettings.None);
 509                 }
 510
 511                 public void Load (string projectFileName, ProjectLoadSettings settings)
 512                 {
 513                         project_load_settings = settings;
 514                         if (String.IsNullOrEmpty (projectFileName))
 515                                 throw new ArgumentNullException ("projectFileName");
 516
 517                         if (!File.Exists (projectFileName))
 518                                 throw new ArgumentException (String.Format ("Project file {0} not found", projectFileName),
 519                                                 "projectFileName");
 520
 521                         this.fullFileName = Utilities.FromMSBuildPath (Path.GetFullPath (projectFileName));
 522                         PushThisFileProperty (fullFileName);
 523
 524                         string filename = fullFileName;
 525                         if (String.Compare (Path.GetExtension (fullFileName), ".sln", true) == 0) {
 526                                 Project tmp_project = ParentEngine.CreateNewProject ();
 527                                 tmp_project.FullFileName = filename;
 528                                 SolutionParser sln_parser = new SolutionParser ();
 529                                 sln_parser.ParseSolution (fullFileName, tmp_project, delegate (int errorNumber, string message) {
 530                                                 LogWarning (filename, message);
 531                                         });
 532                                 filename = fullFileName + ".proj";
 533                                 try {
 534                                         tmp_project.Save (filename);
 535                                         ParentEngine.RemoveLoadedProject (tmp_project);
 536                                         DoLoad (new StreamReader (filename));
 537                                 } finally {
 538                                         if (Environment.GetEnvironmentVariable ("XBUILD_EMIT_SOLUTION") == null)
 539                                                 File.Delete (filename);
 540                                 }
 541                         } else {
 542                                 DoLoad (new StreamReader (filename));
 543                         }
 544                 }
 545
 546                 [MonoTODO ("Not tested")]
 547                 public void Load (TextReader textReader)
 548                 {
 549                         Load (textReader, ProjectLoadSettings.None);
 550                 }
 551
 552                 public void Load (TextReader textReader, ProjectLoadSettings projectLoadSettings)
 553                 {
 554                         project_load_settings = projectLoadSettings;
 555                         if (!string.IsNullOrEmpty (fullFileName))
 556                                 PushThisFileProperty (fullFileName);
 557                         DoLoad (textReader);
 558                 }
 559
 560                 public void LoadXml (string projectXml)
 561                 {
 562                         LoadXml (projectXml, ProjectLoadSettings.None);
 563                 }
 564
 565                 public void LoadXml (string projectXml, ProjectLoadSettings projectLoadSettings)
 566                 {
 567                         project_load_settings = projectLoadSettings;
 568                         if (!string.IsNullOrEmpty (fullFileName))
 569                                 PushThisFileProperty (fullFileName);
 570                         DoLoad (new StringReader (projectXml));
 571                         MarkProjectAsDirty ();
 572                 }
 573
 574
 575                 public void MarkProjectAsDirty ()
 576                 {
 577                         isDirty = true;
 578                         timeOfLastDirty = DateTime.Now;
 579                 }
 580
 581                 [MonoTODO ("Not tested")]
 582                 public void RemoveAllItemGroups ()
 583                 {
 584                         int length = ItemGroups.Count;
 585                         BuildItemGroup [] groups = new BuildItemGroup [length];
 586                         ItemGroups.CopyTo (groups, 0);
 587
 588                         for (int i = 0; i < length; i++)
 589                                 RemoveItemGroup (groups [i]);
 590
 591                         MarkProjectAsDirty ();
 592                         NeedToReevaluate ();
 593                 }
 594
 595                 [MonoTODO ("Not tested")]
 596                 public void RemoveAllPropertyGroups ()
 597                 {
 598                         int length = PropertyGroups.Count;
 599                         BuildPropertyGroup [] groups = new BuildPropertyGroup [length];
 600                         PropertyGroups.CopyTo (groups, 0);
 601
 602                         for (int i = 0; i < length; i++)
 603                                 RemovePropertyGroup (groups [i]);
 604
 605                         MarkProjectAsDirty ();
 606                         NeedToReevaluate ();
 607                 }
 608
 609                 [MonoTODO]
 610                 public void RemoveItem (BuildItem itemToRemove)
 611                 {
 612                         if (itemToRemove == null)
 613                                 throw new ArgumentNullException ("itemToRemove");
 614
 615                         if (!itemToRemove.FromXml && !itemToRemove.HasParentItem)
 616                                 throw new InvalidOperationException ("The object passed in is not part of the project.");
 617
 618                         BuildItemGroup big = itemToRemove.ParentItemGroup;
 619
 620                         if (big.Count == 1) {
 621                                 // ParentItemGroup for items from xml and that have parent is the same
 622                                 groupingCollection.Remove (big);
 623                         } else {
 624                                 if (big.ParentProject != this)
 625                                         throw new InvalidOperationException ("The object passed in is not part of the project.");
 626
 627                                 if (itemToRemove.FromXml)
 628                                         big.RemoveItem (itemToRemove);
 629                                 else
 630                                         big.RemoveItem (itemToRemove.ParentItem);
 631                         }
 632
 633                         MarkProjectAsDirty ();
 634                         NeedToReevaluate ();
 635                 }
 636
 637                 [MonoTODO ("Not tested")]
 638                 public void RemoveItemGroup (BuildItemGroup itemGroupToRemove)
 639                 {
 640                         if (itemGroupToRemove == null)
 641                                 throw new ArgumentNullException ("itemGroupToRemove");
 642
 643                         groupingCollection.Remove (itemGroupToRemove);
 644                         MarkProjectAsDirty ();
 645                 }
 646
 647                 [MonoTODO]
 648                 // NOTE: does not modify imported projects
 649                 public void RemoveItemGroupsWithMatchingCondition (string matchingCondition)
 650                 {
 651                         throw new NotImplementedException ();
 652                 }
 653
 654                 [MonoTODO]
 655                 public void RemoveItemsByName (string itemName)
 656                 {
 657                         if (itemName == null)
 658                                 throw new ArgumentNullException ("itemName");
 659
 660                         throw new NotImplementedException ();
 661                 }
 662
 663                 [MonoTODO ("Not tested")]
 664                 public void RemovePropertyGroup (BuildPropertyGroup propertyGroupToRemove)
 665                 {
 666                         if (propertyGroupToRemove == null)
 667                                 throw new ArgumentNullException ("propertyGroupToRemove");
 668
 669                         groupingCollection.Remove (propertyGroupToRemove);
 670                         MarkProjectAsDirty ();
 671                 }
 672
 673                 [MonoTODO]
 674                 // NOTE: does not modify imported projects
 675                 public void RemovePropertyGroupsWithMatchingCondition (string matchCondition)
 676                 {
 677                         throw new NotImplementedException ();
 678                 }
 679
 680                 [MonoTODO]
 681                 public void ResetBuildStatus ()
 682                 {
 683                         // hack to allow built targets to be removed
 684                         building = true;
 685                         Reevaluate ();
 686                         building = false;
 687                 }
 688
 689                 public void Save (string projectFileName)
 690                 {
 691                         Save (projectFileName, Encoding.Default);
 692                         isDirty = false;
 693                 }
 694
 695                 [MonoTODO ("Ignores encoding")]
 696                 public void Save (string projectFileName, Encoding encoding)
 697                 {
 698                         xmlDocument.Save (projectFileName);
 699                         isDirty = false;
 700                 }
 701
 702                 public void Save (TextWriter outTextWriter)
 703                 {
 704                         xmlDocument.Save (outTextWriter);
 705                         isDirty = false;
 706                 }
 707
 708                 public void SetImportedProperty (string propertyName,
 709                                                  string propertyValue,
 710                                                  string condition,
 711                                                  Project importProject)
 712                 {
 713                         SetImportedProperty (propertyName, propertyValue, condition, importProject,
 714                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 715                 }
 716
 717                 public void SetImportedProperty (string propertyName,
 718                                                  string propertyValue,
 719                                                  string condition,
 720                                                  Project importedProject,
 721                                                  PropertyPosition position)
 722                 {
 723                         SetImportedProperty (propertyName, propertyValue, condition, importedProject,
 724                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 725                 }
 726
 727                 [MonoTODO]
 728                 public void SetImportedProperty (string propertyName,
 729                                                  string propertyValue,
 730                                                  string condition,
 731                                                  Project importedProject,
 732                                                  PropertyPosition position,
 733                                                  bool treatPropertyValueAsLiteral)
 734                 {
 735                         throw new NotImplementedException ();
 736                 }
 737
 738                 public void SetProjectExtensions (string id, string xmlText)
 739                 {
 740                         if (id == null)
 741                                 throw new ArgumentNullException ("id");
 742                         if (xmlText == null)
 743                                 throw new ArgumentNullException ("xmlText");
 744
 745                         XmlNode projectExtensions, node;
 746
 747                         projectExtensions = xmlDocument.SelectSingleNode ("/tns:Project/tns:ProjectExtensions", XmlNamespaceManager);
 748
 749                         if (projectExtensions == null) {
 750                                 projectExtensions = xmlDocument.CreateElement ("ProjectExtensions", XmlNamespace);
 751                                 xmlDocument.DocumentElement.AppendChild (projectExtensions);
 752
 753                                 node = xmlDocument.CreateElement (id, XmlNamespace);
 754                                 node.InnerXml = xmlText;
 755                                 projectExtensions.AppendChild (node);
 756                         } else {
 757                                 node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 758
 759                                 if (node == null) {
 760                                         node = xmlDocument.CreateElement (id, XmlNamespace);
 761                                         projectExtensions.AppendChild (node);
 762                                 }
 763
 764                                 node.InnerXml = xmlText;
 765
 766                         }
 767
 768                         MarkProjectAsDirty ();
 769                 }
 770
 771                 public void SetProperty (string propertyName,
 772                                          string propertyValue)
 773                 {
 774                         SetProperty (propertyName, propertyValue, "true",
 775                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 776                 }
 777
 778                 public void SetProperty (string propertyName,
 779                                          string propertyValue,
 780                                          string condition)
 781                 {
 782                         SetProperty (propertyName, propertyValue, condition,
 783                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 784                 }
 785
 786                 public void SetProperty (string propertyName,
 787                                          string propertyValue,
 788                                          string condition,
 789                                          PropertyPosition position)
 790                 {
 791                         SetProperty (propertyName, propertyValue, condition,
 792                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 793                 }
 794
 795                 [MonoTODO]
 796                 public void SetProperty (string propertyName,
 797                                          string propertyValue,
 798                                          string condition,
 799                                          PropertyPosition position,
 800                                          bool treatPropertyValueAsLiteral)
 801                 {
 802                         throw new NotImplementedException ();
 803                 }
 804
 805                 internal void Unload ()
 806                 {
 807                         unloaded = true;
 808                 }
 809
 810                 internal void CheckUnloaded ()
 811                 {
 812                         if (unloaded)
 813                                 throw new InvalidOperationException ("This project object has been unloaded from the MSBuild engine and is no longer valid.");
 814                 }
 815
 816                 internal void NeedToReevaluate ()
 817                 {
 818                         needToReevaluate = true;
 819                 }
 820
 821                 // Does the actual loading.
 822                 void DoLoad (TextReader textReader)
 823                 {
 824                         try {
 825                                 ParentEngine.RemoveLoadedProject (this);
 826
 827                                 xmlDocument.Load (textReader);
 828
 829                                 if (xmlDocument.DocumentElement.Name == "VisualStudioProject")
 830                                         throw new InvalidProjectFileException (String.Format (
 831                                                         "Project file '{0}' is a VS2003 project, which is not " +
 832                                                         "supported by xbuild. You need to convert it to msbuild " +
 833                                                         "format to build with xbuild.", fullFileName));
 834
 835                                 if (SchemaFile != null) {
 836                                         xmlDocument.Schemas.Add (XmlSchema.Read (
 837                                                                 new StreamReader (SchemaFile), ValidationCallBack));
 838                                         xmlDocument.Validate (ValidationCallBack);
 839                                 }
 840
 841                                 if (xmlDocument.DocumentElement.Name != "Project") {
 842                                         throw new InvalidProjectFileException (String.Format (
 843                                                 "The element <{0}> is unrecognized, or not supported in this context.", xmlDocument.DocumentElement.Name));
 844                                 }
 845
 846                                 if (xmlDocument.DocumentElement.GetAttribute ("xmlns") != ns) {
 847                                         throw new InvalidProjectFileException (
 848                                                 @"The default XML namespace of the project must be the MSBuild XML namespace." +
 849                                                 " If the project is authored in the MSBuild 2003 format, please add " +
 850                                                 "xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\" to the <Project> element. " +
 851                                                 "If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format.  ");
 852                                 }
 853                                 ProcessXml ();
 854                                 ParentEngine.AddLoadedProject (this);
 855                         } catch (Exception e) {
 856                                 throw new InvalidProjectFileException (String.Format ("{0}: {1}",
 857                                                         fullFileName, e.Message), e);
 858                         } finally {
 859                                 if (textReader != null)
 860                                         textReader.Close ();
 861                         }
 862                 }
 863
 864                 void Reevaluate ()
 865                 {
 866                         ProcessXml ();
 867                 }
 868
 869                 void ProcessXml ()
 870                 {
 871                         groupingCollection = new GroupingCollection (this);
 872                         imports = new ImportCollection (groupingCollection);
 873                         usingTasks = new UsingTaskCollection (this);
 874                         itemGroups = new BuildItemGroupCollection (groupingCollection);
 875                         propertyGroups = new BuildPropertyGroupCollection (groupingCollection);
 876                         targets = new TargetCollection (this);
 877                         last_item_group_containing = new Dictionary <string, BuildItemGroup> ();
 878
 879                         string effective_tools_version = GetToolsVersionToUse (false);
 880                         taskDatabase = new TaskDatabase ();
 881                         taskDatabase.CopyTasks (ParentEngine.GetDefaultTasks (effective_tools_version));
 882
 883                         initialTargets = new List<string> ();
 884                         defaultTargets = new string [0];
 885                         PrepareForEvaluate (effective_tools_version);
 886                         ProcessElements (xmlDocument.DocumentElement, null);
 887
 888                         isDirty = false;
 889                         Evaluate ();
 890                 }
 891
 892                 void ProcessProjectAttributes (XmlAttributeCollection attributes)
 893                 {
 894                         foreach (XmlAttribute attr in attributes) {
 895                                 switch (attr.Name) {
 896                                 case "InitialTargets":
 897                                         initialTargets.AddRange (attr.Value.Split (
 898                                                                         new char [] {';', ' '},
 899                                                                         StringSplitOptions.RemoveEmptyEntries));
 900                                         break;
 901                                 case "DefaultTargets":
 902                                         // first non-empty DefaultTargets found is used
 903                                         if (defaultTargets == null || defaultTargets.Length == 0)
 904                                                 defaultTargets = attr.Value.Split (new char [] {';', ' '},
 905                                                         StringSplitOptions.RemoveEmptyEntries);
 906                                         EvaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets",
 907                                                                 DefaultTargets, PropertyType.Reserved));
 908                                         break;
 909                                 }
 910                         }
 911                 }
 912
 913                 internal void ProcessElements (XmlElement rootElement, ImportedProject ip)
 914                 {
 915                         ProcessProjectAttributes (rootElement.Attributes);
 916                         foreach (XmlNode xn in rootElement.ChildNodes) {
 917                                 if (xn is XmlElement) {
 918                                         XmlElement xe = (XmlElement) xn;
 919                                         switch (xe.Name) {
 920                                         case "ProjectExtensions":
 921                                                 AddProjectExtensions (xe);
 922                                                 break;
 923                                         case "Warning":
 924                                         case "Message":
 925                                         case "Error":
 926                                                 AddMessage (xe);
 927                                                 break;
 928                                         case "Target":
 929                                                 AddTarget (xe, ip);
 930                                                 break;
 931                                         case "UsingTask":
 932                                                 AddUsingTask (xe, ip);
 933                                                 break;
 934                                         case "Import":
 935                                                 AddImport (xe, ip, true);
 936                                                 break;
 937                                         case "ImportGroup":
 938                                                 AddImportGroup (xe, ip, true);
 939                                                 break;
 940                                         case "ItemGroup":
 941                                                 AddItemGroup (xe, ip);
 942                                                 break;
 943                                         case "PropertyGroup":
 944                                                 AddPropertyGroup (xe, ip);
 945                                                 break;
 946                                         case  "Choose":
 947                                                 AddChoose (xe, ip);
 948                                                 break;
 949                                         case "ItemDefinitionGroup":
 950                                                 AddItemDefinitionGroup (xe);
 951                                                 break;
 952                                         default:
 953                                                 var pf = ip == null ? null : string.Format (" '{0}'", ip.FullFileName);
 954                                                 throw new InvalidProjectFileException (String.Format ("Invalid element '{0}' in project file{1}.", xe.Name, pf));
 955                                         }
 956                                 }
 957                         }
 958                 }
 959
 960                 void PrepareForEvaluate (string effective_tools_version)
 961                 {
 962                         evaluatedItems = new BuildItemGroup (null, this, null, true);
 963                         evaluatedItemsIgnoringCondition = new BuildItemGroup (null, this, null, true);
 964                         evaluatedItemsByName = new Dictionary <string, BuildItemGroup> (StringComparer.OrdinalIgnoreCase);
 965                         evaluatedItemsByNameIgnoringCondition = new Dictionary <string, BuildItemGroup> (StringComparer.OrdinalIgnoreCase);
 966                         if (building && current_settings == BuildSettings.None)
 967                                 RemoveBuiltTargets ();
 968
 969                         InitializeProperties (effective_tools_version);
 970                 }
 971
 972                 void Evaluate ()
 973                 {
 974                         groupingCollection.Evaluate ();
 975
 976                         //FIXME: UsingTasks aren't really evaluated. (shouldn't use expressions or anything)
 977                         foreach (UsingTask usingTask in UsingTasks)
 978                                 usingTask.Evaluate ();
 979                 }
 980
 981                 // Removes entries of all earlier built targets for this project
 982                 void RemoveBuiltTargets ()
 983                 {
 984                         ParentEngine.ClearBuiltTargetsForProject (this);
 985                 }
 986
 987                 void InitializeProperties (string effective_tools_version)
 988                 {
 989                         BuildProperty bp;
 990
 991                         evaluatedProperties = new BuildPropertyGroup (null, null, null, true);
 992                         conditionedProperties = new Dictionary<string, List<string>> ();
 993
 994                         foreach (BuildProperty gp in GlobalProperties) {
 995                                 bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
 996                                 evaluatedProperties.AddProperty (bp);
 997                         }
 998
 999                         foreach (BuildProperty gp in GlobalProperties)
1000                                 ParentEngine.GlobalProperties.AddProperty (gp);
1001
1002                         // add properties that we dont have from parent engine's
1003                         // global properties
1004                         foreach (BuildProperty gp in ParentEngine.GlobalProperties) {
1005                                 if (evaluatedProperties [gp.Name] == null) {
1006                                         bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
1007                                         evaluatedProperties.AddProperty (bp);
1008                                 }
1009                         }
1010
1011                         foreach (DictionaryEntry de in Environment.GetEnvironmentVariables ()) {
1012                                 bp = new BuildProperty ((string) de.Key, (string) de.Value, PropertyType.Environment);
1013                                 evaluatedProperties.AddProperty (bp);
1014                         }
1015
1016                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFile", Path.GetFileName (fullFileName),
1017                                                 PropertyType.Reserved));
1018                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFullPath", fullFileName, PropertyType.Reserved));
1019                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectName",
1020                                                 Path.GetFileNameWithoutExtension (fullFileName),
1021                                                 PropertyType.Reserved));
1022                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectExtension",
1023                                                 Path.GetExtension (fullFileName),
1024                                                 PropertyType.Reserved));
1025
1026                         string toolsPath = parentEngine.Toolsets [effective_tools_version].ToolsPath;
1027                         if (toolsPath == null)
1028                                 throw new Exception (String.Format ("Invalid tools version '{0}', no tools path set for this.", effective_tools_version));
1029                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildBinPath", toolsPath, PropertyType.Reserved));
1030                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsPath", toolsPath, PropertyType.Reserved));
1031                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsRoot", Path.GetDirectoryName (toolsPath), PropertyType.Reserved));
1032                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsVersion", effective_tools_version, PropertyType.Reserved));
1033                         SetExtensionsPathProperties (DefaultExtensionsPath);
1034                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets", DefaultTargets, PropertyType.Reserved));
1035                         evaluatedProperties.AddProperty (new BuildProperty ("OS", OS, PropertyType.Environment));
1036 #if XBUILD_12
1037                         // see http://msdn.microsoft.com/en-us/library/vstudio/hh162058(v=vs.120).aspx
1038                         if (effective_tools_version == "12.0") {
1039                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsPath32", toolsPath, PropertyType.Reserved));
1040
1041                                 var frameworkToolsPath = ToolLocationHelper.GetPathToDotNetFramework (TargetDotNetFrameworkVersion.Version451);
1042
1043                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildFrameworkToolsPath", frameworkToolsPath, PropertyType.Reserved));
1044                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildFrameworkToolsPath32", frameworkToolsPath, PropertyType.Reserved));
1045                         }
1046 #endif
1047                         // FIXME: make some internal method that will work like GetDirectoryName but output String.Empty on null/String.Empty
1048                         string projectDir;
1049                         if (FullFileName == String.Empty)
1050                                 projectDir = Environment.CurrentDirectory;
1051                         else
1052                                 projectDir = Path.GetDirectoryName (FullFileName);
1053
1054                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDirectory", projectDir, PropertyType.Reserved));
1055
1056                         if (this_file_property_stack.Count > 0)
1057                                 // Just re-inited the properties, but according to the stack,
1058                                 // we should have a MSBuild*This* property set
1059                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1060                 }
1061
1062                 internal void SetExtensionsPathProperties (string extn_path)
1063                 {
1064                         if (!String.IsNullOrEmpty (extn_path)) {
1065                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath", extn_path, PropertyType.Reserved));
1066                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath32", extn_path, PropertyType.Reserved));
1067                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath64", extn_path, PropertyType.Reserved));
1068                         }
1069                 }
1070
1071                 // precedence:
1072                 // ToolsVersion property
1073                 // ToolsVersion attribute on the project
1074                 // parentEngine's DefaultToolsVersion
1075                 string GetToolsVersionToUse (bool emitWarning)
1076                 {
1077                         if (!String.IsNullOrEmpty (ToolsVersion))
1078                                 return ToolsVersion;
1079
1080                         if (!HasToolsVersionAttribute)
1081                                 return parentEngine.DefaultToolsVersion;
1082
1083                         if (parentEngine.Toolsets [DefaultToolsVersion] == null) {
1084                                 if (emitWarning)
1085                                         LogWarning (FullFileName, "Project has unknown ToolsVersion '{0}'. Using the default tools version '{1}' instead.",
1086                                                 DefaultToolsVersion, parentEngine.DefaultToolsVersion);
1087                                 return parentEngine.DefaultToolsVersion;
1088                         }
1089
1090                         return DefaultToolsVersion;
1091                 }
1092
1093                 void AddProjectExtensions (XmlElement xmlElement)
1094                 {
1095                 }
1096
1097                 void AddMessage (XmlElement xmlElement)
1098                 {
1099                 }
1100
1101                 void AddTarget (XmlElement xmlElement, ImportedProject importedProject)
1102                 {
1103                         Target target = new Target (xmlElement, this, importedProject);
1104                         targets.AddTarget (target);
1105
1106                         if (firstTargetName == null)
1107                                 firstTargetName = target.Name;
1108                 }
1109
1110                 void AddUsingTask (XmlElement xmlElement, ImportedProject importedProject)
1111                 {
1112                         UsingTask usingTask;
1113
1114                         usingTask = new UsingTask (xmlElement, this, importedProject);
1115                         UsingTasks.Add (usingTask);
1116                 }
1117
1118                 void AddImport (XmlElement xmlElement, ImportedProject importingProject, bool evaluate_properties)
1119                 {
1120                         // eval all the properties etc till the import
1121                         if (evaluate_properties) {
1122                                 groupingCollection.Evaluate (EvaluationType.Property | EvaluationType.Choose);
1123                         }
1124                         try {
1125                                 PushThisFileProperty (importingProject != null ? importingProject.FullFileName : FullFileName);
1126
1127                                 string project_attribute = xmlElement.GetAttribute ("Project");
1128                                 if (String.IsNullOrEmpty (project_attribute))
1129                                         throw new InvalidProjectFileException ("The required attribute \"Project\" is missing from element <Import>.");
1130
1131                                 Import.ForEachExtensionPathTillFound (xmlElement, this, importingProject,
1132                                         (importPath, from_source_msg) => AddSingleImport (xmlElement, importPath, importingProject, from_source_msg));
1133                         } finally {
1134                                 PopThisFileProperty ();
1135                         }
1136                 }
1137
1138                 void AddImportGroup (XmlElement xmlElement, ImportedProject importedProject, bool evaluate_properties)
1139                 {
1140                         // eval all the properties etc till the import group
1141                         if (evaluate_properties) {
1142                                 groupingCollection.Evaluate (EvaluationType.Property | EvaluationType.Choose);
1143                         }
1144                         string condition_attribute = xmlElement.GetAttribute ("Condition");
1145                         if (!ConditionParser.ParseAndEvaluate (condition_attribute, this))
1146                                 return;
1147                         foreach (XmlNode xn in xmlElement.ChildNodes) {
1148                                 if (xn is XmlElement) {
1149                                         XmlElement xe = (XmlElement) xn;
1150                                         switch (xe.Name) {
1151                                         case "Import":
1152                                                 AddImport (xe, importedProject, evaluate_properties);
1153                                                 break;
1154                                         default:
1155                                                 throw new InvalidProjectFileException(String.Format("Invalid element '{0}' inside ImportGroup in project file '{1}'.", xe.Name, importedProject.FullFileName));
1156                                         }
1157                                 }
1158                         }
1159                 }
1160
1161                 void AddItemDefinitionGroup (XmlElement xmlElement)
1162                 {
1163                         string condition_attribute = xmlElement.GetAttribute ("Condition");
1164                         if (!ConditionParser.ParseAndEvaluate (condition_attribute, this))
1165                                 return;
1166
1167                         foreach (XmlNode xn in xmlElement.ChildNodes) {
1168                                 // TODO: Add all nodes to some internal dictionary?
1169                         }
1170                 }
1171
1172                 bool AddSingleImport (XmlElement xmlElement, string projectPath, ImportedProject importingProject, string from_source_msg)
1173                 {
1174                         Import import = new Import (xmlElement, projectPath, this, importingProject);
1175                         if (!ConditionParser.ParseAndEvaluate (import.Condition, this)) {
1176                                 ParentEngine.LogMessage (MessageImportance.Low,
1177                                                 "Not importing project '{0}' as the condition '{1}' is false",
1178                                                 import.ProjectPath, import.Condition);
1179                                 return false;
1180                         }
1181
1182                         Import existingImport;
1183                         if (Imports.TryGetImport (import, out existingImport)) {
1184                                 if (importingProject == null)
1185                                         LogWarning (fullFileName,
1186                                                         "Cannot import project '{0}' again. It was already imported by " +
1187                                                         "'{1}'. Ignoring.",
1188                                                         projectPath, existingImport.ContainedInProjectFileName);
1189                                 else
1190                                         LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1191                                                 "A circular reference was found involving the import of '{0}'. " +
1192                                                 "It was earlier imported by '{1}'. Only " +
1193                                                 "the first import of this file will be used, ignoring others.",
1194                                                 import.EvaluatedProjectPath, existingImport.ContainedInProjectFileName);
1195
1196                                 return true;
1197                         }
1198
1199                         if (String.Compare (fullFileName, import.EvaluatedProjectPath) == 0) {
1200                                 LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1201                                                 "The main project file was imported here, which creates a circular " +
1202                                                 "reference. Ignoring this import.");
1203
1204                                 return true;
1205                         }
1206
1207                         if (project_load_settings != ProjectLoadSettings.IgnoreMissingImports &&
1208                             !import.CheckEvaluatedProjectPathExists ())
1209                                 return false;
1210
1211                         Imports.Add (import);
1212                         string importingFile = importingProject != null ? importingProject.FullFileName : FullFileName;
1213                         ParentEngine.LogMessage (MessageImportance.Low,
1214                                         "{0}: Importing project {1} {2}",
1215                                         importingFile, import.EvaluatedProjectPath, from_source_msg);
1216
1217                         import.Evaluate (project_load_settings == ProjectLoadSettings.IgnoreMissingImports);
1218                         return true;
1219                 }
1220
1221                 void AddItemGroup (XmlElement xmlElement, ImportedProject importedProject)
1222                 {
1223                         BuildItemGroup big = new BuildItemGroup (xmlElement, this, importedProject, false);
1224                         ItemGroups.Add (big);
1225                 }
1226
1227                 void AddPropertyGroup (XmlElement xmlElement, ImportedProject importedProject)
1228                 {
1229                         BuildPropertyGroup bpg = new BuildPropertyGroup (xmlElement, this, importedProject, false);
1230                         PropertyGroups.Add (bpg);
1231                 }
1232
1233                 void AddChoose (XmlElement xmlElement, ImportedProject importedProject)
1234                 {
1235                         BuildChoose bc = new BuildChoose (xmlElement, this, importedProject);
1236                         groupingCollection.Add (bc);
1237                 }
1238
1239                 static void ValidationCallBack (object sender, ValidationEventArgs e)
1240                 {
1241                         Console.WriteLine ("Validation Error: {0}", e.Message);
1242                 }
1243
1244                 public bool BuildEnabled {
1245                         get {
1246                                 return buildEnabled;
1247                         }
1248                         set {
1249                                 buildEnabled = value;
1250                         }
1251                 }
1252
1253                 [MonoTODO]
1254                 public Encoding Encoding {
1255                         get { return encoding; }
1256                 }
1257
1258                 public string DefaultTargets {
1259                         get {
1260                                 return String.Join ("; ", defaultTargets);
1261                         }
1262                         set {
1263                                 xmlDocument.DocumentElement.SetAttribute ("DefaultTargets", value);
1264                                 if (value != null)
1265                                         defaultTargets = value.Split (new char [] {';', ' '},
1266                                                         StringSplitOptions.RemoveEmptyEntries);
1267                         }
1268                 }
1269
1270                 public BuildItemGroup EvaluatedItems {
1271                         get {
1272                                 if (needToReevaluate) {
1273                                         needToReevaluate = false;
1274                                         Reevaluate ();
1275                                 }
1276                                 return evaluatedItems;
1277                         }
1278                 }
1279
1280                 public BuildItemGroup EvaluatedItemsIgnoringCondition {
1281                         get {
1282                                 if (needToReevaluate) {
1283                                         needToReevaluate = false;
1284                                         Reevaluate ();
1285                                 }
1286                                 return evaluatedItemsIgnoringCondition;
1287                         }
1288                 }
1289
1290                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByName {
1291                         get {
1292                                 // FIXME: do we need to do this here?
1293                                 if (needToReevaluate) {
1294                                         needToReevaluate = false;
1295                                         Reevaluate ();
1296                                 }
1297                                 return evaluatedItemsByName;
1298                         }
1299                 }
1300
1301                 internal IEnumerable EvaluatedItemsByNameAsDictionaryEntries {
1302                         get {
1303                                 if (EvaluatedItemsByName.Count == 0)
1304                                         yield break;
1305
1306                                 foreach (KeyValuePair<string, BuildItemGroup> pair in EvaluatedItemsByName) {
1307                                         foreach (BuildItem bi in pair.Value)
1308                                                 yield return new DictionaryEntry (pair.Key, bi.ConvertToITaskItem (null, ExpressionOptions.ExpandItemRefs));
1309                                 }
1310                         }
1311                 }
1312
1313                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByNameIgnoringCondition {
1314                         get {
1315                                 // FIXME: do we need to do this here?
1316                                 if (needToReevaluate) {
1317                                         needToReevaluate = false;
1318                                         Reevaluate ();
1319                                 }
1320                                 return evaluatedItemsByNameIgnoringCondition;
1321                         }
1322                 }
1323
1324                 // For batching implementation
1325                 Dictionary<string, BuildItemGroup> perBatchItemsByName;
1326                 Dictionary<string, BuildItemGroup> commonItemsByName;
1327
1328                 struct Batch {
1329                         public Dictionary<string, BuildItemGroup> perBatchItemsByName;
1330                         public Dictionary<string, BuildItemGroup> commonItemsByName;
1331
1332                         public Batch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1333                         {
1334                                 this.perBatchItemsByName = perBatchItemsByName;
1335                                 this.commonItemsByName = commonItemsByName;
1336                         }
1337                 }
1338
1339                 Stack<Batch> Batches {
1340                         get { return batches; }
1341                 }
1342
1343                 internal void PushBatch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1344                 {
1345                         batches.Push (new Batch (perBatchItemsByName, commonItemsByName));
1346                         SetBatchedItems (perBatchItemsByName, commonItemsByName);
1347                 }
1348
1349                 internal void PopBatch ()
1350                 {
1351                         batches.Pop ();
1352                         if (batches.Count > 0) {
1353                                 Batch b = batches.Peek ();
1354                                 SetBatchedItems (b.perBatchItemsByName, b.commonItemsByName);
1355                         } else {
1356                                 SetBatchedItems (null, null);
1357                         }
1358                 }
1359
1360                 void SetBatchedItems (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1361                 {
1362                         this.perBatchItemsByName = perBatchItemsByName;
1363                         this.commonItemsByName = commonItemsByName;
1364                 }
1365
1366                 // Honors batching
1367                 internal bool TryGetEvaluatedItemByNameBatched (string itemName, out BuildItemGroup group)
1368                 {
1369                         if (perBatchItemsByName != null && perBatchItemsByName.TryGetValue (itemName, out group))
1370                                 return true;
1371
1372                         if (commonItemsByName != null && commonItemsByName.TryGetValue (itemName, out group))
1373                                 return true;
1374
1375                         group = null;
1376                         return EvaluatedItemsByName.TryGetValue (itemName, out group);
1377                 }
1378
1379                 internal string GetMetadataBatched (string itemName, string metadataName)
1380                 {
1381                         BuildItemGroup group = null;
1382                         if (itemName == null) {
1383                                 //unqualified, all items in a batch(bucket) have the
1384                                 //same metadata values
1385                                 group = GetFirst<BuildItemGroup> (perBatchItemsByName.Values);
1386                                 if (group == null)
1387                                         group = GetFirst<BuildItemGroup> (commonItemsByName.Values);
1388                         } else {
1389                                 //qualified
1390                                 TryGetEvaluatedItemByNameBatched (itemName, out group);
1391                         }
1392
1393                         if (group != null) {
1394                                 foreach (BuildItem item in group) {
1395                                         if (item.HasMetadata (metadataName))
1396                                                 return item.GetEvaluatedMetadata (metadataName);
1397                                 }
1398                         }
1399                         return String.Empty;
1400                 }
1401
1402                 internal IEnumerable<BuildItemGroup> GetAllItemGroups ()
1403                 {
1404                         if (perBatchItemsByName == null && commonItemsByName == null)
1405                                 foreach (BuildItemGroup group in EvaluatedItemsByName.Values)
1406                                         yield return group;
1407
1408                         if (perBatchItemsByName != null)
1409                                 foreach (BuildItemGroup group in perBatchItemsByName.Values)
1410                                         yield return group;
1411
1412                         if (commonItemsByName != null)
1413                                 foreach (BuildItemGroup group in commonItemsByName.Values)
1414                                         yield return group;
1415                 }
1416
1417                 T GetFirst<T> (ICollection<T> list)
1418                 {
1419                         if (list == null)
1420                                 return default (T);
1421
1422                         foreach (T t in list)
1423                                 return t;
1424
1425                         return default (T);
1426                 }
1427
1428                 internal string ThisFileFullPath {
1429                         get { return this_file_property_stack.Peek (); }
1430                 }
1431
1432                 // Used for MSBuild*This* set of properties
1433                 internal void PushThisFileProperty (string full_filename)
1434                 {
1435                         string last_file = this_file_property_stack.Count == 0 ? String.Empty : this_file_property_stack.Peek ();
1436                         this_file_property_stack.Push (full_filename);
1437                         if (last_file != full_filename)
1438                                 // first time, or different from previous one
1439                                 SetMSBuildThisFileProperties (full_filename);
1440                 }
1441
1442                 internal void PopThisFileProperty ()
1443                 {
1444                         string last_file = this_file_property_stack.Pop ();
1445                         if (this_file_property_stack.Count > 0 && last_file != this_file_property_stack.Peek ())
1446                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1447                 }
1448
1449                 void SetMSBuildThisFileProperties (string full_filename)
1450                 {
1451                         if (String.IsNullOrEmpty (full_filename))
1452                                 return;
1453
1454                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFile", Path.GetFileName (full_filename), PropertyType.Reserved));
1455                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileFullPath", full_filename, PropertyType.Reserved));
1456                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileName", Path.GetFileNameWithoutExtension (full_filename), PropertyType.Reserved));
1457                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileExtension", Path.GetExtension (full_filename), PropertyType.Reserved));
1458
1459                         string project_dir = Path.GetDirectoryName (full_filename) + Path.DirectorySeparatorChar;
1460                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectory", project_dir, PropertyType.Reserved));
1461                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectoryNoRoot",
1462                                                 project_dir.Substring (Path.GetPathRoot (project_dir).Length),
1463                                                 PropertyType.Reserved));
1464                 }
1465
1466
1467                 internal void LogWarning (string filename, string message, params object[] messageArgs)
1468                 {
1469                         BuildWarningEventArgs bwea = new BuildWarningEventArgs (
1470                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1471                                 null, null);
1472                         ParentEngine.EventSource.FireWarningRaised (this, bwea);
1473                 }
1474
1475                 internal void LogError (string filename, string message,
1476                                      params object[] messageArgs)
1477                 {
1478                         BuildErrorEventArgs beea = new BuildErrorEventArgs (
1479                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1480                                 null, null);
1481                         ParentEngine.EventSource.FireErrorRaised (this, beea);
1482                 }
1483
1484                 internal static string DefaultExtensionsPath {
1485                         get {
1486                                 if (extensions_path == null) {
1487                                         // NOTE: code from mcs/tools/gacutil/driver.cs
1488                                         PropertyInfo gac = typeof (System.Environment).GetProperty (
1489                                                         "GacPath", BindingFlags.Static | BindingFlags.NonPublic);
1490
1491                                         if (gac != null) {
1492                                                 MethodInfo get_gac = gac.GetGetMethod (true);
1493                                                 string gac_path = (string) get_gac.Invoke (null, null);
1494                                                 extensions_path = Path.GetFullPath (Path.Combine (
1495                                                                         gac_path, Path.Combine ("..", "xbuild")));
1496                                         }
1497                                 }
1498                                 return extensions_path;
1499                         }
1500                 }
1501
1502                 public BuildPropertyGroup EvaluatedProperties {
1503                         get {
1504                                 if (needToReevaluate) {
1505                                         needToReevaluate = false;
1506                                         Reevaluate ();
1507                                 }
1508                                 return evaluatedProperties;
1509                         }
1510                 }
1511
1512                 internal IEnumerable EvaluatedPropertiesAsDictionaryEntries {
1513                         get {
1514                                 foreach (BuildProperty bp in EvaluatedProperties)
1515                                         yield return new DictionaryEntry (bp.Name, bp.Value);
1516                         }
1517                 }
1518
1519                 public string FullFileName {
1520                         get { return fullFileName; }
1521                         set { fullFileName = value; }
1522                 }
1523
1524                 public BuildPropertyGroup GlobalProperties {
1525                         get { return globalProperties; }
1526                         set {
1527                                 if (value == null)
1528                                         throw new ArgumentNullException ("value");
1529
1530                                 if (value.FromXml)
1531                                         throw new InvalidOperationException ("GlobalProperties can not be set to persisted property group.");
1532
1533                                 globalProperties = value;
1534                         }
1535                 }
1536
1537                 public bool IsDirty {
1538                         get { return isDirty; }
1539                 }
1540
1541                 public bool IsValidated {
1542                         get { return isValidated; }
1543                         set { isValidated = value; }
1544                 }
1545
1546                 public BuildItemGroupCollection ItemGroups {
1547                         get { return itemGroups; }
1548                 }
1549
1550                 public ImportCollection Imports {
1551                         get { return imports; }
1552                 }
1553
1554                 public string InitialTargets {
1555                         get {
1556                                 return String.Join ("; ", initialTargets.ToArray ());
1557                         }
1558                         set {
1559                                 initialTargets.Clear ();
1560                                 xmlDocument.DocumentElement.SetAttribute ("InitialTargets", value);
1561                                 if (value != null)
1562                                         initialTargets.AddRange (value.Split (
1563                                                                 new char [] {';', ' '}, StringSplitOptions.RemoveEmptyEntries));
1564                         }
1565                 }
1566
1567                 public Engine ParentEngine {
1568                         get { return parentEngine; }
1569                 }
1570
1571                 public BuildPropertyGroupCollection PropertyGroups {
1572                         get { return propertyGroups; }
1573                 }
1574
1575                 public string SchemaFile {
1576                         get { return schemaFile; }
1577                         set { schemaFile = value; }
1578                 }
1579
1580                 public TargetCollection Targets {
1581                         get { return targets; }
1582                 }
1583
1584                 public DateTime TimeOfLastDirty {
1585                         get { return timeOfLastDirty; }
1586                 }
1587
1588                 public UsingTaskCollection UsingTasks {
1589                         get { return usingTasks; }
1590                 }
1591
1592                 [MonoTODO]
1593                 public string Xml {
1594                         get { return xmlDocument.InnerXml; }
1595                 }
1596
1597                 // corresponds to the xml attribute
1598                 public string DefaultToolsVersion {
1599                         get {
1600                                 if (xmlDocument != null)
1601                                         return xmlDocument.DocumentElement.GetAttribute ("ToolsVersion");
1602                                 return null;
1603                         }
1604                         set {
1605                                 if (xmlDocument != null)
1606                                         xmlDocument.DocumentElement.SetAttribute ("ToolsVersion", value);
1607                         }
1608                 }
1609
1610                 public bool HasToolsVersionAttribute {
1611                         get {
1612                                 return xmlDocument != null && xmlDocument.DocumentElement.HasAttribute ("ToolsVersion");
1613                         }
1614                 }
1615
1616                 public string ToolsVersion {
1617                         get; internal set;
1618                 }
1619
1620                 internal Dictionary <string, BuildItemGroup> LastItemGroupContaining {
1621                         get { return last_item_group_containing; }
1622                 }
1623
1624                 internal ProjectLoadSettings ProjectLoadSettings {
1625                         get { return project_load_settings; }
1626                         set { project_load_settings = value; }
1627                 }
1628
1629                 internal static XmlNamespaceManager XmlNamespaceManager {
1630                         get {
1631                                 if (manager == null) {
1632                                         manager = new XmlNamespaceManager (new NameTable ());
1633                                         manager.AddNamespace ("tns", ns);
1634                                 }
1635
1636                                 return manager;
1637                         }
1638                 }
1639
1640                 internal TaskDatabase TaskDatabase {
1641                         get { return taskDatabase; }
1642                 }
1643
1644                 internal XmlDocument XmlDocument {
1645                         get { return xmlDocument; }
1646                 }
1647
1648                 internal static string XmlNamespace {
1649                         get { return ns; }
1650                 }
1651
1652                 static string OS {
1653                         get {
1654                                 PlatformID pid = Environment.OSVersion.Platform;
1655                                 switch ((int)pid) {
1656                                 case 128:
1657                                 case 4:
1658                                         return "Unix";
1659                                 case 6:
1660                                         return "OSX";
1661                                 default:
1662                                         return "Windows_NT";
1663                                 }
1664                         }
1665                 }
1666
1667         }
1668 }