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 projectFile,
 135                                           string condition)
 136                 {
 137                         if (projectFile == null)
 138                                 throw new ArgumentNullException ("projectFile");
 139
 140                         XmlElement importElement = xmlDocument.CreateElement ("Import", XmlNamespace);
 141                         xmlDocument.DocumentElement.AppendChild (importElement);
 142                         importElement.SetAttribute ("Project", projectFile);
 143                         if (!String.IsNullOrEmpty (condition))
 144                                 importElement.SetAttribute ("Condition", condition);
 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 (targetOutputs != null && ParentEngine.BuiltTargetsOutputByName.TryGetValue (key, out outputs))
 378                                 targetOutputs [target_name] = outputs;
 379                         return true;
 380                 }
 381
 382                 internal string GetKeyForTarget (string target_name)
 383                 {
 384                         return GetKeyForTarget (target_name, true);
 385                 }
 386
 387                 internal string GetKeyForTarget (string target_name, bool include_global_properties)
 388                 {
 389                         // target name is case insensitive
 390                         return fullFileName + ":" + target_name.ToLowerInvariant () +
 391                                         (include_global_properties ? (":" + GlobalPropertiesToString (GlobalProperties))
 392                                                                    : String.Empty);
 393                 }
 394
 395                 string GlobalPropertiesToString (BuildPropertyGroup bgp)
 396                 {
 397                         StringBuilder sb = new StringBuilder ();
 398                         foreach (BuildProperty bp in bgp)
 399                                 sb.AppendFormat (" {0}:{1}", bp.Name, bp.FinalValue);
 400                         return sb.ToString ();
 401                 }
 402
 403                 void ProcessBeforeAndAfterTargets ()
 404                 {
 405                         var beforeTable = Targets.AsIEnumerable ()
 406                                                 .SelectMany (target => GetTargetNamesFromString (target.BeforeTargets),
 407                                                                 (target, before_target) => new {before_target, name = target.Name})
 408                                                 .ToLookup (x => x.before_target, x => x.name)
 409                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 410
 411                         foreach (var pair in beforeTable) {
 412                                 if (targets.Exists (pair.Key))
 413                                         targets [pair.Key].BeforeThisTargets = pair.Value;
 414                                 else
 415                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 416                         }
 417
 418                         var afterTable = Targets.AsIEnumerable ()
 419                                                 .SelectMany (target => GetTargetNamesFromString (target.AfterTargets),
 420                                                                 (target, after_target) => new {after_target, name = target.Name})
 421                                                 .ToLookup (x => x.after_target, x => x.name)
 422                                                 .ToDictionary (x => x.Key, x => x.Distinct ().ToList ());
 423
 424                         foreach (var pair in afterTable) {
 425                                 if (targets.Exists (pair.Key))
 426                                         targets [pair.Key].AfterThisTargets = pair.Value;
 427                                 else
 428                                         LogWarning (FullFileName, "Target '{0}', not found in the project", pair.Key);
 429                         }
 430                 }
 431
 432                 string[] GetTargetNamesFromString (string targets)
 433                 {
 434                         Expression expr = new Expression ();
 435                         expr.Parse (targets, ParseOptions.AllowItemsNoMetadataAndSplit);
 436                         return (string []) expr.ConvertTo (this, typeof (string []));
 437                 }
 438
 439                 [MonoTODO]
 440                 public string [] GetConditionedPropertyValues (string propertyName)
 441                 {
 442                         if (conditionedProperties.ContainsKey (propertyName))
 443                                 return conditionedProperties [propertyName].ToArray ();
 444                         else
 445                                 return new string [0];
 446                 }
 447
 448                 public BuildItemGroup GetEvaluatedItemsByName (string itemName)
 449                 {
 450                         if (needToReevaluate) {
 451                                 needToReevaluate = false;
 452                                 Reevaluate ();
 453                         }
 454
 455                         if (evaluatedItemsByName.ContainsKey (itemName))
 456                                 return evaluatedItemsByName [itemName];
 457                         else
 458                                 return new BuildItemGroup (this);
 459                 }
 460
 461                 public BuildItemGroup GetEvaluatedItemsByNameIgnoringCondition (string itemName)
 462                 {
 463                         if (needToReevaluate) {
 464                                 needToReevaluate = false;
 465                                 Reevaluate ();
 466                         }
 467
 468                         if (evaluatedItemsByNameIgnoringCondition.ContainsKey (itemName))
 469                                 return evaluatedItemsByNameIgnoringCondition [itemName];
 470                         else
 471                                 return new BuildItemGroup (this);
 472                 }
 473
 474                 public string GetEvaluatedProperty (string propertyName)
 475                 {
 476                         if (needToReevaluate) {
 477                                 needToReevaluate = false;
 478                                 Reevaluate ();
 479                         }
 480
 481                         if (propertyName == null)
 482                                 throw new ArgumentNullException ("propertyName");
 483
 484                         BuildProperty bp = evaluatedProperties [propertyName];
 485
 486                         return bp == null ? null : (string) bp;
 487                 }
 488
 489                 [MonoTODO ("We should remember that node and not use XPath to get it")]
 490                 public string GetProjectExtensions (string id)
 491                 {
 492                         if (id == null || id == String.Empty)
 493                                 return String.Empty;
 494
 495                         XmlNode node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 496
 497                         if (node == null)
 498                                 return String.Empty;
 499                         else
 500                                 return node.InnerXml;
 501                 }
 502
 503
 504                 public void Load (string projectFileName)
 505                 {
 506                         Load (projectFileName, ProjectLoadSettings.None);
 507                 }
 508
 509                 public void Load (string projectFileName, ProjectLoadSettings projectLoadSettings)
 510                 {
 511                         project_load_settings = projectLoadSettings;
 512                         if (String.IsNullOrEmpty (projectFileName))
 513                                 throw new ArgumentNullException ("projectFileName");
 514
 515                         if (!File.Exists (projectFileName))
 516                                 throw new ArgumentException (String.Format ("Project file {0} not found", projectFileName),
 517                                                 "projectFileName");
 518
 519                         this.fullFileName = Utilities.FromMSBuildPath (Path.GetFullPath (projectFileName));
 520                         PushThisFileProperty (fullFileName);
 521
 522                         string filename = fullFileName;
 523                         if (String.Compare (Path.GetExtension (fullFileName), ".sln", true) == 0) {
 524                                 Project tmp_project = ParentEngine.CreateNewProject ();
 525                                 tmp_project.FullFileName = filename;
 526                                 SolutionParser sln_parser = new SolutionParser ();
 527                                 sln_parser.ParseSolution (fullFileName, tmp_project, delegate (int errorNumber, string message) {
 528                                                 LogWarning (filename, message);
 529                                         });
 530                                 filename = fullFileName + ".proj";
 531                                 try {
 532                                         tmp_project.Save (filename);
 533                                         ParentEngine.RemoveLoadedProject (tmp_project);
 534                                         DoLoad (new StreamReader (filename));
 535                                 } finally {
 536                                         if (Environment.GetEnvironmentVariable ("XBUILD_EMIT_SOLUTION") == null)
 537                                                 File.Delete (filename);
 538                                 }
 539                         } else {
 540                                 DoLoad (new StreamReader (filename));
 541                         }
 542                 }
 543
 544                 [MonoTODO ("Not tested")]
 545                 public void Load (TextReader textReader)
 546                 {
 547                         Load (textReader, ProjectLoadSettings.None);
 548                 }
 549
 550                 public void Load (TextReader textReader, ProjectLoadSettings projectLoadSettings)
 551                 {
 552                         project_load_settings = projectLoadSettings;
 553                         if (!string.IsNullOrEmpty (fullFileName))
 554                                 PushThisFileProperty (fullFileName);
 555                         DoLoad (textReader);
 556                 }
 557
 558                 public void LoadXml (string projectXml)
 559                 {
 560                         LoadXml (projectXml, ProjectLoadSettings.None);
 561                 }
 562
 563                 public void LoadXml (string projectXml, ProjectLoadSettings projectLoadSettings)
 564                 {
 565                         project_load_settings = projectLoadSettings;
 566                         if (!string.IsNullOrEmpty (fullFileName))
 567                                 PushThisFileProperty (fullFileName);
 568                         DoLoad (new StringReader (projectXml));
 569                         MarkProjectAsDirty ();
 570                 }
 571
 572
 573                 public void MarkProjectAsDirty ()
 574                 {
 575                         isDirty = true;
 576                         timeOfLastDirty = DateTime.Now;
 577                 }
 578
 579                 [MonoTODO ("Not tested")]
 580                 public void RemoveAllItemGroups ()
 581                 {
 582                         int length = ItemGroups.Count;
 583                         BuildItemGroup [] groups = new BuildItemGroup [length];
 584                         ItemGroups.CopyTo (groups, 0);
 585
 586                         for (int i = 0; i < length; i++)
 587                                 RemoveItemGroup (groups [i]);
 588
 589                         MarkProjectAsDirty ();
 590                         NeedToReevaluate ();
 591                 }
 592
 593                 [MonoTODO ("Not tested")]
 594                 public void RemoveAllPropertyGroups ()
 595                 {
 596                         int length = PropertyGroups.Count;
 597                         BuildPropertyGroup [] groups = new BuildPropertyGroup [length];
 598                         PropertyGroups.CopyTo (groups, 0);
 599
 600                         for (int i = 0; i < length; i++)
 601                                 RemovePropertyGroup (groups [i]);
 602
 603                         MarkProjectAsDirty ();
 604                         NeedToReevaluate ();
 605                 }
 606
 607                 [MonoTODO]
 608                 public void RemoveItem (BuildItem itemToRemove)
 609                 {
 610                         if (itemToRemove == null)
 611                                 throw new ArgumentNullException ("itemToRemove");
 612
 613                         if (!itemToRemove.FromXml && !itemToRemove.HasParentItem)
 614                                 throw new InvalidOperationException ("The object passed in is not part of the project.");
 615
 616                         BuildItemGroup big = itemToRemove.ParentItemGroup;
 617
 618                         if (big.Count == 1) {
 619                                 // ParentItemGroup for items from xml and that have parent is the same
 620                                 groupingCollection.Remove (big);
 621                         } else {
 622                                 if (big.ParentProject != this)
 623                                         throw new InvalidOperationException ("The object passed in is not part of the project.");
 624
 625                                 if (itemToRemove.FromXml)
 626                                         big.RemoveItem (itemToRemove);
 627                                 else
 628                                         big.RemoveItem (itemToRemove.ParentItem);
 629                         }
 630
 631                         MarkProjectAsDirty ();
 632                         NeedToReevaluate ();
 633                 }
 634
 635                 [MonoTODO ("Not tested")]
 636                 public void RemoveItemGroup (BuildItemGroup itemGroupToRemove)
 637                 {
 638                         if (itemGroupToRemove == null)
 639                                 throw new ArgumentNullException ("itemGroupToRemove");
 640
 641                         groupingCollection.Remove (itemGroupToRemove);
 642                         MarkProjectAsDirty ();
 643                 }
 644
 645                 [MonoTODO]
 646                 // NOTE: does not modify imported projects
 647                 public void RemoveItemGroupsWithMatchingCondition (string matchCondition)
 648                 {
 649                         throw new NotImplementedException ();
 650                 }
 651
 652                 [MonoTODO]
 653                 public void RemoveItemsByName (string itemName)
 654                 {
 655                         if (itemName == null)
 656                                 throw new ArgumentNullException ("itemName");
 657
 658                         throw new NotImplementedException ();
 659                 }
 660
 661                 [MonoTODO ("Not tested")]
 662                 public void RemovePropertyGroup (BuildPropertyGroup propertyGroupToRemove)
 663                 {
 664                         if (propertyGroupToRemove == null)
 665                                 throw new ArgumentNullException ("propertyGroupToRemove");
 666
 667                         groupingCollection.Remove (propertyGroupToRemove);
 668                         MarkProjectAsDirty ();
 669                 }
 670
 671                 [MonoTODO]
 672                 // NOTE: does not modify imported projects
 673                 public void RemovePropertyGroupsWithMatchingCondition (string matchCondition)
 674                 {
 675                         throw new NotImplementedException ();
 676                 }
 677
 678                 [MonoTODO]
 679                 public void ResetBuildStatus ()
 680                 {
 681                         // hack to allow built targets to be removed
 682                         building = true;
 683                         Reevaluate ();
 684                         building = false;
 685                 }
 686
 687                 public void Save (string projectFileName)
 688                 {
 689                         Save (projectFileName, Encoding.Default);
 690                         isDirty = false;
 691                 }
 692
 693                 [MonoTODO ("Ignores encoding")]
 694                 public void Save (string projectFileName, Encoding encoding)
 695                 {
 696                         xmlDocument.Save (projectFileName);
 697                         isDirty = false;
 698                 }
 699
 700                 public void Save (TextWriter textWriter)
 701                 {
 702                         xmlDocument.Save (textWriter);
 703                         isDirty = false;
 704                 }
 705
 706                 public void SetImportedProperty (string propertyName,
 707                                                  string propertyValue,
 708                                                  string condition,
 709                                                  Project importProject)
 710                 {
 711                         SetImportedProperty (propertyName, propertyValue, condition, importProject,
 712                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 713                 }
 714
 715                 public void SetImportedProperty (string propertyName,
 716                                                  string propertyValue,
 717                                                  string condition,
 718                                                  Project importedProject,
 719                                                  PropertyPosition position)
 720                 {
 721                         SetImportedProperty (propertyName, propertyValue, condition, importedProject,
 722                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 723                 }
 724
 725                 [MonoTODO]
 726                 public void SetImportedProperty (string propertyName,
 727                                                  string propertyValue,
 728                                                  string condition,
 729                                                  Project importedProject,
 730                                                  PropertyPosition position,
 731                                                  bool treatPropertyValueAsLiteral)
 732                 {
 733                         throw new NotImplementedException ();
 734                 }
 735
 736                 public void SetProjectExtensions (string id, string content)
 737                 {
 738                         if (id == null)
 739                                 throw new ArgumentNullException ("id");
 740                         if (content == null)
 741                                 throw new ArgumentNullException ("content");
 742
 743                         XmlNode projectExtensions, node;
 744
 745                         projectExtensions = xmlDocument.SelectSingleNode ("/tns:Project/tns:ProjectExtensions", XmlNamespaceManager);
 746
 747                         if (projectExtensions == null) {
 748                                 projectExtensions = xmlDocument.CreateElement ("ProjectExtensions", XmlNamespace);
 749                                 xmlDocument.DocumentElement.AppendChild (projectExtensions);
 750
 751                                 node = xmlDocument.CreateElement (id, XmlNamespace);
 752                                 node.InnerXml = content;
 753                                 projectExtensions.AppendChild (node);
 754                         } else {
 755                                 node = xmlDocument.SelectSingleNode (String.Format ("/tns:Project/tns:ProjectExtensions/tns:{0}", id), XmlNamespaceManager);
 756
 757                                 if (node == null) {
 758                                         node = xmlDocument.CreateElement (id, XmlNamespace);
 759                                         projectExtensions.AppendChild (node);
 760                                 }
 761
 762                                 node.InnerXml = content;
 763
 764                         }
 765
 766                         MarkProjectAsDirty ();
 767                 }
 768
 769                 public void SetProperty (string propertyName,
 770                                          string propertyValue)
 771                 {
 772                         SetProperty (propertyName, propertyValue, "true",
 773                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 774                 }
 775
 776                 public void SetProperty (string propertyName,
 777                                          string propertyValue,
 778                                          string condition)
 779                 {
 780                         SetProperty (propertyName, propertyValue, condition,
 781                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup);
 782                 }
 783
 784                 public void SetProperty (string propertyName,
 785                                          string propertyValue,
 786                                          string condition,
 787                                          PropertyPosition position)
 788                 {
 789                         SetProperty (propertyName, propertyValue, condition,
 790                                 PropertyPosition.UseExistingOrCreateAfterLastPropertyGroup, false);
 791                 }
 792
 793                 [MonoTODO]
 794                 public void SetProperty (string propertyName,
 795                                          string propertyValue,
 796                                          string condition,
 797                                          PropertyPosition position,
 798                                          bool treatPropertyValueAsLiteral)
 799                 {
 800                         throw new NotImplementedException ();
 801                 }
 802
 803                 internal void Unload ()
 804                 {
 805                         unloaded = true;
 806                 }
 807
 808                 internal void CheckUnloaded ()
 809                 {
 810                         if (unloaded)
 811                                 throw new InvalidOperationException ("This project object has been unloaded from the MSBuild engine and is no longer valid.");
 812                 }
 813
 814                 internal void NeedToReevaluate ()
 815                 {
 816                         needToReevaluate = true;
 817                 }
 818
 819                 // Does the actual loading.
 820                 void DoLoad (TextReader textReader)
 821                 {
 822                         try {
 823                                 ParentEngine.RemoveLoadedProject (this);
 824
 825                                 xmlDocument.Load (textReader);
 826
 827                                 if (xmlDocument.DocumentElement.Name == "VisualStudioProject")
 828                                         throw new InvalidProjectFileException (String.Format (
 829                                                         "Project file '{0}' is a VS2003 project, which is not " +
 830                                                         "supported by xbuild. You need to convert it to msbuild " +
 831                                                         "format to build with xbuild.", fullFileName));
 832
 833                                 if (SchemaFile != null) {
 834                                         xmlDocument.Schemas.Add (XmlSchema.Read (
 835                                                                 new StreamReader (SchemaFile), ValidationCallBack));
 836                                         xmlDocument.Validate (ValidationCallBack);
 837                                 }
 838
 839                                 if (xmlDocument.DocumentElement.Name != "Project") {
 840                                         throw new InvalidProjectFileException (String.Format (
 841                                                 "The element <{0}> is unrecognized, or not supported in this context.", xmlDocument.DocumentElement.Name));
 842                                 }
 843
 844                                 if (xmlDocument.DocumentElement.GetAttribute ("xmlns") != ns) {
 845                                         throw new InvalidProjectFileException (
 846                                                 @"The default XML namespace of the project must be the MSBuild XML namespace." +
 847                                                 " If the project is authored in the MSBuild 2003 format, please add " +
 848                                                 "xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\" to the <Project> element. " +
 849                                                 "If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format.  ");
 850                                 }
 851                                 ProcessXml ();
 852                                 ParentEngine.AddLoadedProject (this);
 853                         } catch (Exception e) {
 854                                 throw new InvalidProjectFileException (String.Format ("{0}: {1}",
 855                                                         fullFileName, e.Message), e);
 856                         } finally {
 857                                 if (textReader != null)
 858                                         textReader.Close ();
 859                         }
 860                 }
 861
 862                 void Reevaluate ()
 863                 {
 864                         ProcessXml ();
 865                 }
 866
 867                 void ProcessXml ()
 868                 {
 869                         groupingCollection = new GroupingCollection (this);
 870                         imports = new ImportCollection (groupingCollection);
 871                         usingTasks = new UsingTaskCollection (this);
 872                         itemGroups = new BuildItemGroupCollection (groupingCollection);
 873                         propertyGroups = new BuildPropertyGroupCollection (groupingCollection);
 874                         targets = new TargetCollection (this);
 875                         last_item_group_containing = new Dictionary <string, BuildItemGroup> ();
 876
 877                         string effective_tools_version = GetToolsVersionToUse (false);
 878                         taskDatabase = new TaskDatabase ();
 879                         taskDatabase.CopyTasks (ParentEngine.GetDefaultTasks (effective_tools_version));
 880
 881                         initialTargets = new List<string> ();
 882                         defaultTargets = new string [0];
 883                         PrepareForEvaluate (effective_tools_version);
 884                         ProcessElements (xmlDocument.DocumentElement, null);
 885
 886                         isDirty = false;
 887                         Evaluate ();
 888                 }
 889
 890                 void ProcessProjectAttributes (XmlAttributeCollection attributes)
 891                 {
 892                         foreach (XmlAttribute attr in attributes) {
 893                                 switch (attr.Name) {
 894                                 case "InitialTargets":
 895                                         initialTargets.AddRange (attr.Value.Split (
 896                                                                         new char [] {';', ' '},
 897                                                                         StringSplitOptions.RemoveEmptyEntries));
 898                                         break;
 899                                 case "DefaultTargets":
 900                                         // first non-empty DefaultTargets found is used
 901                                         if (defaultTargets == null || defaultTargets.Length == 0)
 902                                                 defaultTargets = attr.Value.Split (new char [] {';', ' '},
 903                                                         StringSplitOptions.RemoveEmptyEntries);
 904                                         EvaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets",
 905                                                                 DefaultTargets, PropertyType.Reserved));
 906                                         break;
 907                                 }
 908                         }
 909                 }
 910
 911                 internal void ProcessElements (XmlElement rootElement, ImportedProject ip)
 912                 {
 913                         ProcessProjectAttributes (rootElement.Attributes);
 914                         foreach (XmlNode xn in rootElement.ChildNodes) {
 915                                 if (xn is XmlElement) {
 916                                         XmlElement xe = (XmlElement) xn;
 917                                         switch (xe.Name) {
 918                                         case "ProjectExtensions":
 919                                                 AddProjectExtensions (xe);
 920                                                 break;
 921                                         case "Warning":
 922                                         case "Message":
 923                                         case "Error":
 924                                                 AddMessage (xe);
 925                                                 break;
 926                                         case "Target":
 927                                                 AddTarget (xe, ip);
 928                                                 break;
 929                                         case "UsingTask":
 930                                                 AddUsingTask (xe, ip);
 931                                                 break;
 932                                         case "Import":
 933                                                 AddImport (xe, ip, true);
 934                                                 break;
 935                                         case "ImportGroup":
 936                                                 AddImportGroup (xe, ip, true);
 937                                                 break;
 938                                         case "ItemGroup":
 939                                                 AddItemGroup (xe, ip);
 940                                                 break;
 941                                         case "PropertyGroup":
 942                                                 AddPropertyGroup (xe, ip);
 943                                                 break;
 944                                         case  "Choose":
 945                                                 AddChoose (xe, ip);
 946                                                 break;
 947                                         case "ItemDefinitionGroup":
 948                                                 AddItemDefinitionGroup (xe);
 949                                                 break;
 950                                         default:
 951                                                 var pf = ip == null ? null : string.Format (" '{0}'", ip.FullFileName);
 952                                                 throw new InvalidProjectFileException (String.Format ("Invalid element '{0}' in project file{1}.", xe.Name, pf));
 953                                         }
 954                                 }
 955                         }
 956                 }
 957
 958                 void PrepareForEvaluate (string effective_tools_version)
 959                 {
 960                         evaluatedItems = new BuildItemGroup (null, this, null, true);
 961                         evaluatedItemsIgnoringCondition = new BuildItemGroup (null, this, null, true);
 962                         evaluatedItemsByName = new Dictionary <string, BuildItemGroup> (StringComparer.OrdinalIgnoreCase);
 963                         evaluatedItemsByNameIgnoringCondition = new Dictionary <string, BuildItemGroup> (StringComparer.OrdinalIgnoreCase);
 964                         if (building && current_settings == BuildSettings.None)
 965                                 RemoveBuiltTargets ();
 966
 967                         InitializeProperties (effective_tools_version);
 968                 }
 969
 970                 void Evaluate ()
 971                 {
 972                         groupingCollection.Evaluate ();
 973
 974                         //FIXME: UsingTasks aren't really evaluated. (shouldn't use expressions or anything)
 975                         foreach (UsingTask usingTask in UsingTasks)
 976                                 usingTask.Evaluate ();
 977                 }
 978
 979                 // Removes entries of all earlier built targets for this project
 980                 void RemoveBuiltTargets ()
 981                 {
 982                         ParentEngine.ClearBuiltTargetsForProject (this);
 983                 }
 984
 985                 void InitializeProperties (string effective_tools_version)
 986                 {
 987                         BuildProperty bp;
 988
 989                         evaluatedProperties = new BuildPropertyGroup (null, null, null, true);
 990                         conditionedProperties = new Dictionary<string, List<string>> ();
 991
 992                         foreach (BuildProperty gp in GlobalProperties) {
 993                                 bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
 994                                 evaluatedProperties.AddProperty (bp);
 995                         }
 996
 997                         foreach (BuildProperty gp in GlobalProperties)
 998                                 ParentEngine.GlobalProperties.AddProperty (gp);
 999
1000                         // add properties that we dont have from parent engine's
1001                         // global properties
1002                         foreach (BuildProperty gp in ParentEngine.GlobalProperties) {
1003                                 if (evaluatedProperties [gp.Name] == null) {
1004                                         bp = new BuildProperty (gp.Name, gp.Value, PropertyType.Global);
1005                                         evaluatedProperties.AddProperty (bp);
1006                                 }
1007                         }
1008
1009                         foreach (DictionaryEntry de in Environment.GetEnvironmentVariables ()) {
1010                                 bp = new BuildProperty ((string) de.Key, (string) de.Value, PropertyType.Environment);
1011                                 evaluatedProperties.AddProperty (bp);
1012                         }
1013
1014                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFile", Path.GetFileName (fullFileName),
1015                                                 PropertyType.Reserved));
1016                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectFullPath", fullFileName, PropertyType.Reserved));
1017                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectName",
1018                                                 Path.GetFileNameWithoutExtension (fullFileName),
1019                                                 PropertyType.Reserved));
1020                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectExtension",
1021                                                 Path.GetExtension (fullFileName),
1022                                                 PropertyType.Reserved));
1023
1024                         string toolsPath = parentEngine.Toolsets [effective_tools_version].ToolsPath;
1025                         if (toolsPath == null)
1026                                 throw new Exception (String.Format ("Invalid tools version '{0}', no tools path set for this.", effective_tools_version));
1027                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildBinPath", toolsPath, PropertyType.Reserved));
1028                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsPath", toolsPath, PropertyType.Reserved));
1029                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsRoot", Path.GetDirectoryName (toolsPath), PropertyType.Reserved));
1030                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsVersion", effective_tools_version, PropertyType.Reserved));
1031                         SetExtensionsPathProperties (DefaultExtensionsPath);
1032                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDefaultTargets", DefaultTargets, PropertyType.Reserved));
1033                         evaluatedProperties.AddProperty (new BuildProperty ("OS", OS, PropertyType.Environment));
1034 #if XBUILD_12
1035                         // see http://msdn.microsoft.com/en-us/library/vstudio/hh162058(v=vs.120).aspx
1036                         if (effective_tools_version == "12.0" || effective_tools_version == "14.0") {
1037                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildToolsPath32", toolsPath, PropertyType.Reserved));
1038
1039                                 var frameworkToolsPath = ToolLocationHelper.GetPathToDotNetFramework (TargetDotNetFrameworkVersion.Version451);
1040
1041                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildFrameworkToolsPath", frameworkToolsPath, PropertyType.Reserved));
1042                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildFrameworkToolsPath32", frameworkToolsPath, PropertyType.Reserved));
1043                         }
1044 #endif
1045                         // FIXME: make some internal method that will work like GetDirectoryName but output String.Empty on null/String.Empty
1046                         string projectDir;
1047                         if (FullFileName == String.Empty)
1048                                 projectDir = Environment.CurrentDirectory;
1049                         else
1050                                 projectDir = Path.GetDirectoryName (FullFileName);
1051
1052                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildProjectDirectory", projectDir, PropertyType.Reserved));
1053
1054                         if (this_file_property_stack.Count > 0)
1055                                 // Just re-inited the properties, but according to the stack,
1056                                 // we should have a MSBuild*This* property set
1057                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1058                 }
1059
1060                 internal void SetExtensionsPathProperties (string extn_path)
1061                 {
1062                         if (!String.IsNullOrEmpty (extn_path)) {
1063                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath", extn_path, PropertyType.Reserved));
1064                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath32", extn_path, PropertyType.Reserved));
1065                                 evaluatedProperties.AddProperty (new BuildProperty ("MSBuildExtensionsPath64", extn_path, PropertyType.Reserved));
1066                         }
1067                 }
1068
1069                 // precedence:
1070                 // ToolsVersion property
1071                 // ToolsVersion attribute on the project
1072                 // parentEngine's DefaultToolsVersion
1073                 string GetToolsVersionToUse (bool emitWarning)
1074                 {
1075                         if (!String.IsNullOrEmpty (ToolsVersion))
1076                                 return ToolsVersion;
1077
1078 #if XBUILD_14
1079                         return "14.0";
1080 #elif XBUILD_12
1081                         return "12.0";
1082 #else
1083                         if (!HasToolsVersionAttribute)
1084                                 return parentEngine.DefaultToolsVersion;
1085
1086                         if (parentEngine.Toolsets [DefaultToolsVersion] == null) {
1087                                 if (emitWarning)
1088                                         LogWarning (FullFileName, "Project has unknown ToolsVersion '{0}'. Using the default tools version '{1}' instead.",
1089                                                 DefaultToolsVersion, parentEngine.DefaultToolsVersion);
1090                                 return parentEngine.DefaultToolsVersion;
1091                         }
1092
1093                         return DefaultToolsVersion;
1094 #endif
1095                 }
1096
1097                 void AddProjectExtensions (XmlElement xmlElement)
1098                 {
1099                 }
1100
1101                 void AddMessage (XmlElement xmlElement)
1102                 {
1103                 }
1104
1105                 void AddTarget (XmlElement xmlElement, ImportedProject importedProject)
1106                 {
1107                         Target target = new Target (xmlElement, this, importedProject);
1108                         targets.AddTarget (target);
1109
1110                         if (firstTargetName == null)
1111                                 firstTargetName = target.Name;
1112                 }
1113
1114                 void AddUsingTask (XmlElement xmlElement, ImportedProject importedProject)
1115                 {
1116                         UsingTask usingTask;
1117
1118                         usingTask = new UsingTask (xmlElement, this, importedProject);
1119                         UsingTasks.Add (usingTask);
1120                 }
1121
1122                 void AddImport (XmlElement xmlElement, ImportedProject importingProject, bool evaluate_properties)
1123                 {
1124                         // eval all the properties etc till the import
1125                         if (evaluate_properties) {
1126                                 groupingCollection.Evaluate (EvaluationType.Property | EvaluationType.Choose);
1127                         }
1128                         try {
1129                                 PushThisFileProperty (importingProject != null ? importingProject.FullFileName : FullFileName);
1130
1131                                 string project_attribute = xmlElement.GetAttribute ("Project");
1132                                 if (String.IsNullOrEmpty (project_attribute))
1133                                         throw new InvalidProjectFileException ("The required attribute \"Project\" is missing from element <Import>.");
1134
1135                                 Import.ForEachExtensionPathTillFound (xmlElement, this, importingProject,
1136                                         (importPath, from_source_msg) => AddSingleImport (xmlElement, importPath, importingProject, from_source_msg));
1137                         } finally {
1138                                 PopThisFileProperty ();
1139                         }
1140                 }
1141
1142                 void AddImportGroup (XmlElement xmlElement, ImportedProject importedProject, bool evaluate_properties)
1143                 {
1144                         // eval all the properties etc till the import group
1145                         if (evaluate_properties) {
1146                                 groupingCollection.Evaluate (EvaluationType.Property | EvaluationType.Choose);
1147                         }
1148                         string condition_attribute = xmlElement.GetAttribute ("Condition");
1149                         if (!ConditionParser.ParseAndEvaluate (condition_attribute, this))
1150                                 return;
1151                         foreach (XmlNode xn in xmlElement.ChildNodes) {
1152                                 if (xn is XmlElement) {
1153                                         XmlElement xe = (XmlElement) xn;
1154                                         switch (xe.Name) {
1155                                         case "Import":
1156                                                 AddImport (xe, importedProject, evaluate_properties);
1157                                                 break;
1158                                         default:
1159                                                 throw new InvalidProjectFileException(String.Format("Invalid element '{0}' inside ImportGroup in project file '{1}'.", xe.Name, importedProject.FullFileName));
1160                                         }
1161                                 }
1162                         }
1163                 }
1164
1165                 void AddItemDefinitionGroup (XmlElement xmlElement)
1166                 {
1167                         string condition_attribute = xmlElement.GetAttribute ("Condition");
1168                         if (!ConditionParser.ParseAndEvaluate (condition_attribute, this))
1169                                 return;
1170
1171                         foreach (XmlNode xn in xmlElement.ChildNodes) {
1172                                 // TODO: Add all nodes to some internal dictionary?
1173                         }
1174                 }
1175
1176                 bool AddSingleImport (XmlElement xmlElement, string projectPath, ImportedProject importingProject, string from_source_msg)
1177                 {
1178                         Import import = new Import (xmlElement, projectPath, this, importingProject);
1179                         if (!ConditionParser.ParseAndEvaluate (import.Condition, this)) {
1180                                 ParentEngine.LogMessage (MessageImportance.Low,
1181                                                 "Not importing project '{0}' as the condition '{1}' is false",
1182                                                 import.ProjectPath, import.Condition);
1183                                 return false;
1184                         }
1185
1186                         Import existingImport;
1187                         if (Imports.TryGetImport (import, out existingImport)) {
1188                                 if (importingProject == null)
1189                                         LogWarning (fullFileName,
1190                                                         "Cannot import project '{0}' again. It was already imported by " +
1191                                                         "'{1}'. Ignoring.",
1192                                                         projectPath, existingImport.ContainedInProjectFileName);
1193                                 else
1194                                         LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1195                                                 "A circular reference was found involving the import of '{0}'. " +
1196                                                 "It was earlier imported by '{1}'. Only " +
1197                                                 "the first import of this file will be used, ignoring others.",
1198                                                 import.EvaluatedProjectPath, existingImport.ContainedInProjectFileName);
1199
1200                                 return true;
1201                         }
1202
1203                         if (String.Compare (fullFileName, import.EvaluatedProjectPath) == 0) {
1204                                 LogWarning (importingProject != null ? importingProject.FullFileName : fullFileName,
1205                                                 "The main project file was imported here, which creates a circular " +
1206                                                 "reference. Ignoring this import.");
1207
1208                                 return true;
1209                         }
1210
1211                         if (project_load_settings != ProjectLoadSettings.IgnoreMissingImports &&
1212                             !import.CheckEvaluatedProjectPathExists ())
1213                                 return false;
1214
1215                         Imports.Add (import);
1216                         string importingFile = importingProject != null ? importingProject.FullFileName : FullFileName;
1217                         ParentEngine.LogMessage (MessageImportance.Low,
1218                                         "{0}: Importing project {1} {2}",
1219                                         importingFile, import.EvaluatedProjectPath, from_source_msg);
1220
1221                         import.Evaluate (project_load_settings == ProjectLoadSettings.IgnoreMissingImports);
1222                         return true;
1223                 }
1224
1225                 void AddItemGroup (XmlElement xmlElement, ImportedProject importedProject)
1226                 {
1227                         BuildItemGroup big = new BuildItemGroup (xmlElement, this, importedProject, false);
1228                         ItemGroups.Add (big);
1229                 }
1230
1231                 void AddPropertyGroup (XmlElement xmlElement, ImportedProject importedProject)
1232                 {
1233                         BuildPropertyGroup bpg = new BuildPropertyGroup (xmlElement, this, importedProject, false);
1234                         PropertyGroups.Add (bpg);
1235                 }
1236
1237                 void AddChoose (XmlElement xmlElement, ImportedProject importedProject)
1238                 {
1239                         BuildChoose bc = new BuildChoose (xmlElement, this, importedProject);
1240                         groupingCollection.Add (bc);
1241                 }
1242
1243                 static void ValidationCallBack (object sender, ValidationEventArgs e)
1244                 {
1245                         Console.WriteLine ("Validation Error: {0}", e.Message);
1246                 }
1247
1248                 public bool BuildEnabled {
1249                         get {
1250                                 return buildEnabled;
1251                         }
1252                         set {
1253                                 buildEnabled = value;
1254                         }
1255                 }
1256
1257                 [MonoTODO]
1258                 public Encoding Encoding {
1259                         get { return encoding; }
1260                 }
1261
1262                 public string DefaultTargets {
1263                         get {
1264                                 return String.Join ("; ", defaultTargets);
1265                         }
1266                         set {
1267                                 xmlDocument.DocumentElement.SetAttribute ("DefaultTargets", value);
1268                                 if (value != null)
1269                                         defaultTargets = value.Split (new char [] {';', ' '},
1270                                                         StringSplitOptions.RemoveEmptyEntries);
1271                         }
1272                 }
1273
1274                 public BuildItemGroup EvaluatedItems {
1275                         get {
1276                                 if (needToReevaluate) {
1277                                         needToReevaluate = false;
1278                                         Reevaluate ();
1279                                 }
1280                                 return evaluatedItems;
1281                         }
1282                 }
1283
1284                 public BuildItemGroup EvaluatedItemsIgnoringCondition {
1285                         get {
1286                                 if (needToReevaluate) {
1287                                         needToReevaluate = false;
1288                                         Reevaluate ();
1289                                 }
1290                                 return evaluatedItemsIgnoringCondition;
1291                         }
1292                 }
1293
1294                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByName {
1295                         get {
1296                                 // FIXME: do we need to do this here?
1297                                 if (needToReevaluate) {
1298                                         needToReevaluate = false;
1299                                         Reevaluate ();
1300                                 }
1301                                 return evaluatedItemsByName;
1302                         }
1303                 }
1304
1305                 internal IEnumerable EvaluatedItemsByNameAsDictionaryEntries {
1306                         get {
1307                                 if (EvaluatedItemsByName.Count == 0)
1308                                         yield break;
1309
1310                                 foreach (KeyValuePair<string, BuildItemGroup> pair in EvaluatedItemsByName) {
1311                                         foreach (BuildItem bi in pair.Value)
1312                                                 yield return new DictionaryEntry (pair.Key, bi.ConvertToITaskItem (null, ExpressionOptions.ExpandItemRefs));
1313                                 }
1314                         }
1315                 }
1316
1317                 internal IDictionary <string, BuildItemGroup> EvaluatedItemsByNameIgnoringCondition {
1318                         get {
1319                                 // FIXME: do we need to do this here?
1320                                 if (needToReevaluate) {
1321                                         needToReevaluate = false;
1322                                         Reevaluate ();
1323                                 }
1324                                 return evaluatedItemsByNameIgnoringCondition;
1325                         }
1326                 }
1327
1328                 // For batching implementation
1329                 Dictionary<string, BuildItemGroup> perBatchItemsByName;
1330                 Dictionary<string, BuildItemGroup> commonItemsByName;
1331
1332                 struct Batch {
1333                         public Dictionary<string, BuildItemGroup> perBatchItemsByName;
1334                         public Dictionary<string, BuildItemGroup> commonItemsByName;
1335
1336                         public Batch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1337                         {
1338                                 this.perBatchItemsByName = perBatchItemsByName;
1339                                 this.commonItemsByName = commonItemsByName;
1340                         }
1341                 }
1342
1343                 Stack<Batch> Batches {
1344                         get { return batches; }
1345                 }
1346
1347                 internal void PushBatch (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1348                 {
1349                         batches.Push (new Batch (perBatchItemsByName, commonItemsByName));
1350                         SetBatchedItems (perBatchItemsByName, commonItemsByName);
1351                 }
1352
1353                 internal void PopBatch ()
1354                 {
1355                         batches.Pop ();
1356                         if (batches.Count > 0) {
1357                                 Batch b = batches.Peek ();
1358                                 SetBatchedItems (b.perBatchItemsByName, b.commonItemsByName);
1359                         } else {
1360                                 SetBatchedItems (null, null);
1361                         }
1362                 }
1363
1364                 void SetBatchedItems (Dictionary<string, BuildItemGroup> perBatchItemsByName, Dictionary<string, BuildItemGroup> commonItemsByName)
1365                 {
1366                         this.perBatchItemsByName = perBatchItemsByName;
1367                         this.commonItemsByName = commonItemsByName;
1368                 }
1369
1370                 // Honors batching
1371                 internal bool TryGetEvaluatedItemByNameBatched (string itemName, out BuildItemGroup group)
1372                 {
1373                         if (perBatchItemsByName != null && perBatchItemsByName.TryGetValue (itemName, out group))
1374                                 return true;
1375
1376                         if (commonItemsByName != null && commonItemsByName.TryGetValue (itemName, out group))
1377                                 return true;
1378
1379                         group = null;
1380                         return EvaluatedItemsByName.TryGetValue (itemName, out group);
1381                 }
1382
1383                 internal string GetMetadataBatched (string itemName, string metadataName)
1384                 {
1385                         BuildItemGroup group = null;
1386                         if (itemName == null) {
1387                                 //unqualified, all items in a batch(bucket) have the
1388                                 //same metadata values
1389                                 group = GetFirst<BuildItemGroup> (perBatchItemsByName.Values);
1390                                 if (group == null)
1391                                         group = GetFirst<BuildItemGroup> (commonItemsByName.Values);
1392                         } else {
1393                                 //qualified
1394                                 TryGetEvaluatedItemByNameBatched (itemName, out group);
1395                         }
1396
1397                         if (group != null) {
1398                                 foreach (BuildItem item in group) {
1399                                         if (item.HasMetadata (metadataName))
1400                                                 return item.GetEvaluatedMetadata (metadataName);
1401                                 }
1402                         }
1403                         return String.Empty;
1404                 }
1405
1406                 internal IEnumerable<BuildItemGroup> GetAllItemGroups ()
1407                 {
1408                         if (perBatchItemsByName == null && commonItemsByName == null)
1409                                 foreach (BuildItemGroup group in EvaluatedItemsByName.Values)
1410                                         yield return group;
1411
1412                         if (perBatchItemsByName != null)
1413                                 foreach (BuildItemGroup group in perBatchItemsByName.Values)
1414                                         yield return group;
1415
1416                         if (commonItemsByName != null)
1417                                 foreach (BuildItemGroup group in commonItemsByName.Values)
1418                                         yield return group;
1419                 }
1420
1421                 T GetFirst<T> (ICollection<T> list)
1422                 {
1423                         if (list == null)
1424                                 return default (T);
1425
1426                         foreach (T t in list)
1427                                 return t;
1428
1429                         return default (T);
1430                 }
1431
1432                 internal string ThisFileFullPath {
1433                         get { return this_file_property_stack.Peek (); }
1434                 }
1435
1436                 // Used for MSBuild*This* set of properties
1437                 internal void PushThisFileProperty (string full_filename)
1438                 {
1439                         string last_file = this_file_property_stack.Count == 0 ? String.Empty : this_file_property_stack.Peek ();
1440                         this_file_property_stack.Push (full_filename);
1441                         if (last_file != full_filename)
1442                                 // first time, or different from previous one
1443                                 SetMSBuildThisFileProperties (full_filename);
1444                 }
1445
1446                 internal void PopThisFileProperty ()
1447                 {
1448                         string last_file = this_file_property_stack.Pop ();
1449                         if (this_file_property_stack.Count > 0 && last_file != this_file_property_stack.Peek ())
1450                                 SetMSBuildThisFileProperties (this_file_property_stack.Peek ());
1451                 }
1452
1453                 void SetMSBuildThisFileProperties (string full_filename)
1454                 {
1455                         if (String.IsNullOrEmpty (full_filename))
1456                                 return;
1457
1458                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFile", Path.GetFileName (full_filename), PropertyType.Reserved));
1459                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileFullPath", full_filename, PropertyType.Reserved));
1460                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileName", Path.GetFileNameWithoutExtension (full_filename), PropertyType.Reserved));
1461                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileExtension", Path.GetExtension (full_filename), PropertyType.Reserved));
1462
1463                         string project_dir = Path.GetDirectoryName (full_filename) + Path.DirectorySeparatorChar;
1464                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectory", project_dir, PropertyType.Reserved));
1465                         evaluatedProperties.AddProperty (new BuildProperty ("MSBuildThisFileDirectoryNoRoot",
1466                                                 project_dir.Substring (Path.GetPathRoot (project_dir).Length),
1467                                                 PropertyType.Reserved));
1468                 }
1469
1470
1471                 internal void LogWarning (string filename, string message, params object[] messageArgs)
1472                 {
1473                         BuildWarningEventArgs bwea = new BuildWarningEventArgs (
1474                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1475                                 null, null);
1476                         ParentEngine.EventSource.FireWarningRaised (this, bwea);
1477                 }
1478
1479                 internal void LogError (string filename, string message,
1480                                      params object[] messageArgs)
1481                 {
1482                         BuildErrorEventArgs beea = new BuildErrorEventArgs (
1483                                 null, null, filename, 0, 0, 0, 0, String.Format (message, messageArgs),
1484                                 null, null);
1485                         ParentEngine.EventSource.FireErrorRaised (this, beea);
1486                 }
1487
1488                 internal static string DefaultExtensionsPath {
1489                         get {
1490                                 if (extensions_path == null) {
1491                                         // NOTE: code from mcs/tools/gacutil/driver.cs
1492                                         PropertyInfo gac = typeof (System.Environment).GetProperty (
1493                                                         "GacPath", BindingFlags.Static | BindingFlags.NonPublic);
1494
1495                                         if (gac != null) {
1496                                                 MethodInfo get_gac = gac.GetGetMethod (true);
1497                                                 string gac_path = (string) get_gac.Invoke (null, null);
1498                                                 extensions_path = Path.GetFullPath (Path.Combine (
1499                                                                         gac_path, Path.Combine ("..", "xbuild")));
1500                                         }
1501                                 }
1502                                 return extensions_path;
1503                         }
1504                 }
1505
1506                 public BuildPropertyGroup EvaluatedProperties {
1507                         get {
1508                                 if (needToReevaluate) {
1509                                         needToReevaluate = false;
1510                                         Reevaluate ();
1511                                 }
1512                                 return evaluatedProperties;
1513                         }
1514                 }
1515
1516                 internal IEnumerable EvaluatedPropertiesAsDictionaryEntries {
1517                         get {
1518                                 foreach (BuildProperty bp in EvaluatedProperties)
1519                                         yield return new DictionaryEntry (bp.Name, bp.Value);
1520                         }
1521                 }
1522
1523                 public string FullFileName {
1524                         get { return fullFileName; }
1525                         set { fullFileName = value; }
1526                 }
1527
1528                 public BuildPropertyGroup GlobalProperties {
1529                         get { return globalProperties; }
1530                         set {
1531                                 if (value == null)
1532                                         throw new ArgumentNullException ("value");
1533
1534                                 if (value.FromXml)
1535                                         throw new InvalidOperationException ("GlobalProperties can not be set to persisted property group.");
1536
1537                                 globalProperties = value;
1538                         }
1539                 }
1540
1541                 public bool IsDirty {
1542                         get { return isDirty; }
1543                 }
1544
1545                 public bool IsValidated {
1546                         get { return isValidated; }
1547                         set { isValidated = value; }
1548                 }
1549
1550                 public BuildItemGroupCollection ItemGroups {
1551                         get { return itemGroups; }
1552                 }
1553
1554                 public ImportCollection Imports {
1555                         get { return imports; }
1556                 }
1557
1558                 public string InitialTargets {
1559                         get {
1560                                 return String.Join ("; ", initialTargets.ToArray ());
1561                         }
1562                         set {
1563                                 initialTargets.Clear ();
1564                                 xmlDocument.DocumentElement.SetAttribute ("InitialTargets", value);
1565                                 if (value != null)
1566                                         initialTargets.AddRange (value.Split (
1567                                                                 new char [] {';', ' '}, StringSplitOptions.RemoveEmptyEntries));
1568                         }
1569                 }
1570
1571                 public Engine ParentEngine {
1572                         get { return parentEngine; }
1573                 }
1574
1575                 public BuildPropertyGroupCollection PropertyGroups {
1576                         get { return propertyGroups; }
1577                 }
1578
1579                 public string SchemaFile {
1580                         get { return schemaFile; }
1581                         set { schemaFile = value; }
1582                 }
1583
1584                 public TargetCollection Targets {
1585                         get { return targets; }
1586                 }
1587
1588                 public DateTime TimeOfLastDirty {
1589                         get { return timeOfLastDirty; }
1590                 }
1591
1592                 public UsingTaskCollection UsingTasks {
1593                         get { return usingTasks; }
1594                 }
1595
1596                 [MonoTODO]
1597                 public string Xml {
1598                         get { return xmlDocument.InnerXml; }
1599                 }
1600
1601                 // corresponds to the xml attribute
1602                 public string DefaultToolsVersion {
1603                         get {
1604                                 if (xmlDocument != null)
1605                                         return xmlDocument.DocumentElement.GetAttribute ("ToolsVersion");
1606                                 return null;
1607                         }
1608                         set {
1609                                 if (xmlDocument != null)
1610                                         xmlDocument.DocumentElement.SetAttribute ("ToolsVersion", value);
1611                         }
1612                 }
1613
1614                 public bool HasToolsVersionAttribute {
1615                         get {
1616                                 return xmlDocument != null && xmlDocument.DocumentElement.HasAttribute ("ToolsVersion");
1617                         }
1618                 }
1619
1620                 public string ToolsVersion {
1621                         get; internal set;
1622                 }
1623
1624                 internal Dictionary <string, BuildItemGroup> LastItemGroupContaining {
1625                         get { return last_item_group_containing; }
1626                 }
1627
1628                 internal ProjectLoadSettings ProjectLoadSettings {
1629                         get { return project_load_settings; }
1630                         set { project_load_settings = value; }
1631                 }
1632
1633                 internal static XmlNamespaceManager XmlNamespaceManager {
1634                         get {
1635                                 if (manager == null) {
1636                                         manager = new XmlNamespaceManager (new NameTable ());
1637                                         manager.AddNamespace ("tns", ns);
1638                                 }
1639
1640                                 return manager;
1641                         }
1642                 }
1643
1644                 internal TaskDatabase TaskDatabase {
1645                         get { return taskDatabase; }
1646                 }
1647
1648                 internal XmlDocument XmlDocument {
1649                         get { return xmlDocument; }
1650                 }
1651
1652                 internal static string XmlNamespace {
1653                         get { return ns; }
1654                 }
1655
1656                 static string OS {
1657                         get {
1658                                 PlatformID pid = Environment.OSVersion.Platform;
1659                                 switch ((int)pid) {
1660                                 case 128:
1661                                 case 4:
1662                                         return "Unix";
1663                                 case 6:
1664                                         return "OSX";
1665                                 default:
1666                                         return "Windows_NT";
1667                                 }
1668                         }
1669                 }
1670
1671         }
1672 }