got imports working. Imported ProjectRootElement needed XmlReader to load it.
[mono.git] / mcs / class / Microsoft.Build / Microsoft.Build.Evaluation / Project.cs
1 //
2 // Project.cs
3 //
4 // Author:
5 //   Leszek Ciesielski (skolima@gmail.com)
6 //   Rolf Bjarne Kvinge (rolf@xamarin.com)
7 //   Atsushi Enomoto (atsushi@xamarin.com)
8 //
9 // (C) 2011 Leszek Ciesielski
10 // Copyright (C) 2011,2013 Xamarin Inc. (http://www.xamarin.com)
11 //
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
19 // 
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
22 // 
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 //
31
32 using System;
33 using System.Collections.Generic;
34 using System.Diagnostics;
35 using System.IO;
36 using System.Linq;
37 using System.Text;
38 using System.Xml;
39 using Microsoft.Build.Construction;
40 using Microsoft.Build.Internal;
41 using Microsoft.Build.Execution;
42 using Microsoft.Build.Framework;
43 using Microsoft.Build.Logging;
44 using System.Collections;
45 using Microsoft.Build.Exceptions;
46
47 namespace Microsoft.Build.Evaluation
48 {
49         [DebuggerDisplay ("{FullPath} EffectiveToolsVersion={ToolsVersion} #GlobalProperties="
50         + "{data.globalProperties.Count} #Properties={data.Properties.Count} #ItemTypes="
51         + "{data.ItemTypes.Count} #ItemDefinitions={data.ItemDefinitions.Count} #Items="
52         + "{data.Items.Count} #Targets={data.Targets.Count}")]
53         public class Project
54         {
55                 public Project (XmlReader xml)
56                         : this (ProjectRootElement.Create (xml))
57                 {
58                 }
59
60                 public Project (XmlReader xml, IDictionary<string, string> globalProperties,
61                                               string toolsVersion)
62                         : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion)
63                 {
64                 }
65
66                 public Project (XmlReader xml, IDictionary<string, string> globalProperties,
67                                               string toolsVersion, ProjectCollection projectCollection)
68                         : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion, projectCollection)
69                 {
70                 }
71
72                 public Project (XmlReader xml, IDictionary<string, string> globalProperties,
73                                               string toolsVersion, ProjectCollection projectCollection,
74                                               ProjectLoadSettings loadSettings)
75                         : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion, projectCollection, loadSettings)
76                 {
77                 }
78
79                 public Project (ProjectRootElement xml) : this (xml, null, null)
80                 {
81                 }
82
83                 public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
84                                               string toolsVersion)
85                         : this (xml, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection)
86                 {
87                 }
88
89                 public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
90                                               string toolsVersion, ProjectCollection projectCollection)
91                         : this (xml, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
92                 {
93                 }
94
95                 public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
96                                               string toolsVersion, ProjectCollection projectCollection,
97                                               ProjectLoadSettings loadSettings)
98                 {
99                         if (projectCollection == null)
100                                 throw new ArgumentNullException ("projectCollection");
101                         this.Xml = xml;
102                         this.GlobalProperties = globalProperties ?? new Dictionary<string, string> ();
103                         this.ToolsVersion = toolsVersion;
104                         this.ProjectCollection = projectCollection;
105                         this.load_settings = loadSettings;
106
107                         Initialize (null);
108                 }
109                 
110                 Project (ProjectRootElement imported, Project parent)
111                 {
112                         this.Xml = imported;
113                         this.GlobalProperties = parent.GlobalProperties;
114                         this.ToolsVersion = parent.ToolsVersion;
115                         this.ProjectCollection = parent.ProjectCollection;
116                         this.load_settings = parent.load_settings;
117
118                         Initialize (parent);
119                 }
120
121                 public Project (string projectFile)
122                         : this (projectFile, null, null)
123                 {
124                 }
125
126                 public Project (string projectFile, IDictionary<string, string> globalProperties,
127                                 string toolsVersion)
128                 : this (projectFile, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection, ProjectLoadSettings.Default)
129                 {
130                 }
131
132                 public Project (string projectFile, IDictionary<string, string> globalProperties,
133                                 string toolsVersion, ProjectCollection projectCollection)
134                 : this (projectFile, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
135                 {
136                 }
137
138                 public Project (string projectFile, IDictionary<string, string> globalProperties,
139                                 string toolsVersion, ProjectCollection projectCollection,
140                                 ProjectLoadSettings loadSettings)
141                         : this (ProjectRootElement.Create (projectFile), globalProperties, toolsVersion, projectCollection, loadSettings)
142                 {
143                 }
144
145                 ProjectLoadSettings load_settings;
146
147                 public IDictionary<string, string> GlobalProperties { get; private set; }
148
149                 public ProjectCollection ProjectCollection { get; private set; }
150
151                 public string ToolsVersion { get; private set; }
152
153                 public ProjectRootElement Xml { get; private set; }
154
155                 string dir_path;
156                 Dictionary<string, ProjectItemDefinition> item_definitions;
157                 List<ResolvedImport> raw_imports;
158                 List<ProjectItem> raw_items;
159                 List<ProjectItem> all_evaluated_items;
160                 List<string> item_types;
161                 List<ProjectProperty> properties;
162                 Dictionary<string, ProjectTargetInstance> targets;
163
164                 void Initialize (Project parent)
165                 {
166                         dir_path = Directory.GetCurrentDirectory ();
167                         raw_imports = new List<ResolvedImport> ();
168                         item_definitions = new Dictionary<string, ProjectItemDefinition> ();
169                         item_types = new List<string> ();
170                         targets = new Dictionary<string, ProjectTargetInstance> ();
171                         raw_items = new List<ProjectItem> ();
172                         
173                         // FIXME: this is likely hack. Test ImportedProject.Properties to see what exactly should happen.
174                         if (parent != null) {
175                                 properties = parent.properties;
176                         } else {
177                                 properties = new List<ProjectProperty> ();
178                         
179                                 foreach (DictionaryEntry p in Environment.GetEnvironmentVariables ())
180                                         this.properties.Add (new EnvironmentProjectProperty (this, (string)p.Key, (string)p.Value));
181                                 foreach (var p in GlobalProperties)
182                                         this.properties.Add (new GlobalProjectProperty (this, p.Key, p.Value));
183                                 var tools = ProjectCollection.GetToolset (this.ToolsVersion) ?? ProjectCollection.GetToolset (this.ProjectCollection.DefaultToolsVersion);
184                                 foreach (var p in ReservedProjectProperty.GetReservedProperties (tools, this))
185                                         this.properties.Add (p);
186                                 foreach (var p in EnvironmentProjectProperty.GetWellKnownProperties (this))
187                                         this.properties.Add (p);
188                         }
189
190                         ProcessXml (parent);
191                 }
192                 
193                 static readonly char [] item_sep = {';'};
194                 
195                 void ProcessXml (Project parent)
196                 {
197                         // this needs to be initialized here (regardless of that items won't be evaluated at property evaluation;
198                         // Conditions could incorrectly reference items and lack of this list causes NRE.
199                         all_evaluated_items = new List<ProjectItem> ();
200
201                         // property evaluation happens couple of times.
202                         // At first step, all non-imported properties are evaluated TOO, WHILE those properties are being evaluated.
203                         // This means, Include and IncludeGroup elements with Condition attribute MAY contain references to
204                         // properties and they will be expanded.
205                         var elements = EvaluatePropertiesAndImports (Xml.Children).ToArray (); // ToArray(): to not lazily evaluate elements.
206                         
207                         // next, evaluate items
208                         EvaluateItems (elements);
209                 }
210                 
211                 IEnumerable<ProjectElement> EvaluatePropertiesAndImports (IEnumerable<ProjectElement> elements)
212                 {
213                         // First step: evaluate Properties
214                         foreach (var child in elements) {
215                                 yield return child;
216                                 var pge = child as ProjectPropertyGroupElement;
217                                 if (pge != null && ShouldInclude (pge.Condition))
218                                         foreach (var p in pge.Properties)
219                                                 // do not allow overwriting reserved or well-known properties by user
220                                                 if (!this.properties.Any (_ => (_.IsReservedProperty || _.IsWellKnownProperty) && _.Name.Equals (p.Name, StringComparison.InvariantCultureIgnoreCase)))
221                                                         if (ShouldInclude (p.Condition))
222                                                                 this.properties.Add (new XmlProjectProperty (this, p, PropertyType.Normal, ProjectCollection.OngoingImports.Any ()));
223
224                                 var ige = child as ProjectImportGroupElement;
225                                 if (ige != null && ShouldInclude (ige.Condition)) {
226                                         foreach (var incc in ige.Imports) {
227                                                 foreach (var e in Import (incc))
228                                                         yield return e;
229                                         }
230                                 }
231                                 var inc = child as ProjectImportElement;
232                                 if (inc != null && ShouldInclude (inc.Condition))
233                                         foreach (var e in Import (inc))
234                                                 yield return e;
235                         }
236                 }
237
238                 void EvaluateItems (IEnumerable<ProjectElement> elements)
239                 {
240                         foreach (var child in elements) {
241                                 var ige = child as ProjectItemGroupElement;
242                                 if (ige != null) {
243                                         foreach (var p in ige.Items) {
244                                                 var inc = ExpandString (p.Include);
245                                                 foreach (var each in inc.Split (item_sep, StringSplitOptions.RemoveEmptyEntries)) {
246                                                         var item = new ProjectItem (this, p, each);
247                                                         this.raw_items.Add (item);
248                                                         if (ShouldInclude (ige.Condition) && ShouldInclude (p.Condition))
249                                                                 all_evaluated_items.Add (item);
250                                                 }
251                                         }
252                                 }
253                                 var def = child as ProjectItemDefinitionGroupElement;
254                                 if (def != null) {
255                                         foreach (var p in def.ItemDefinitions) {
256                                                 if (ShouldInclude (p.Condition)) {
257                                                         ProjectItemDefinition existing;
258                                                         if (!item_definitions.TryGetValue (p.ItemType, out existing))
259                                                                 item_definitions.Add (p.ItemType, (existing = new ProjectItemDefinition (this, p.ItemType)));
260                                                         existing.AddItems (p);
261                                                 }
262                                         }
263                                 }
264                         }
265                         all_evaluated_items.Sort ((p1, p2) => string.Compare (p1.ItemType, p2.ItemType, StringComparison.OrdinalIgnoreCase));
266                 }
267                 
268                 IEnumerable<ProjectElement> Import (ProjectImportElement import)
269                 {
270                         string dir = GetEvaluationTimeThisFileDirectory ();
271                         string path = Path.IsPathRooted (import.Project) ? import.Project : dir != null ? Path.Combine (dir, import.Project) : Path.GetFullPath (import.Project);
272                         if (ProjectCollection.OngoingImports.Contains (path)) {
273                                 switch (load_settings) {
274                                 case ProjectLoadSettings.RejectCircularImports:
275                                         throw new InvalidProjectFileException (import.Location, null, string.Format ("Circular imports was detected: {0} is already on \"importing\" stack", path));
276                                 }
277                                 return new ProjectElement [0]; // do not import circular references
278                         }
279                         ProjectCollection.OngoingImports.Push (path);
280                         try {
281                                 using (var reader = XmlReader.Create (path)) {
282                                         var root = ProjectRootElement.Create (reader, ProjectCollection);
283                                         raw_imports.Add (new ResolvedImport (import, root, true));
284                                         return this.EvaluatePropertiesAndImports (root.Children).ToArray ();
285                                 }
286                         } finally {
287                                 ProjectCollection.OngoingImports.Pop ();
288                         }
289                 }
290
291                 public ICollection<ProjectItem> GetItemsIgnoringCondition (string itemType)
292                 {
293                         return new CollectionFromEnumerable<ProjectItem> (raw_items.Where (p => p.ItemType.Equals (itemType, StringComparison.OrdinalIgnoreCase)));
294                 }
295
296                 public void RemoveItems (IEnumerable<ProjectItem> items)
297                 {
298                         var removal = new List<ProjectItem> (items);
299                         foreach (var item in removal) {
300                                 var parent = item.Xml.Parent;
301                                 parent.RemoveChild (item.Xml);
302                                 if (parent.Count == 0)
303                                         parent.Parent.RemoveChild (parent);
304                         }
305                 }
306
307                 static readonly Dictionary<string, string> empty_metadata = new Dictionary<string, string> ();
308
309                 public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude)
310                 {
311                         return AddItem (itemType, unevaluatedInclude, empty_metadata);
312                 }
313
314                 public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude,
315                                 IEnumerable<KeyValuePair<string, string>> metadata)
316                 {
317                         // FIXME: needs several check that AddItemFast() does not process (see MSDN for details).
318
319                         return AddItemFast (itemType, unevaluatedInclude, metadata);
320                 }
321
322                 public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude)
323                 {
324                         return AddItemFast (itemType, unevaluatedInclude, empty_metadata);
325                 }
326
327                 public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude,
328                                                                      IEnumerable<KeyValuePair<string, string>> metadata)
329                 {
330                         throw new NotImplementedException ();
331                 }
332
333                 public bool Build ()
334                 {
335                         return Build (Xml.DefaultTargets.Split (';'));
336                 }
337
338                 public bool Build (IEnumerable<ILogger> loggers)
339                 {
340                         return Build (Xml.DefaultTargets.Split (';'), loggers);
341                 }
342
343                 public bool Build (string target)
344                 {
345                         return string.IsNullOrWhiteSpace (target) ? Build () : Build (new string [] {target});
346                 }
347
348                 public bool Build (string[] targets)
349                 {
350                         return Build (targets, new ILogger [0]);
351                 }
352
353                 public bool Build (ILogger logger)
354                 {
355                         return Build (Xml.DefaultTargets.Split (';'), new ILogger [] {logger});
356                 }
357
358                 public bool Build (string[] targets, IEnumerable<ILogger> loggers)
359                 {
360                         return Build (targets, loggers, new ForwardingLoggerRecord [0]);
361                 }
362
363                 public bool Build (IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
364                 {
365                         return Build (Xml.DefaultTargets.Split (';'), loggers, remoteLoggers);
366                 }
367
368                 public bool Build (string target, IEnumerable<ILogger> loggers)
369                 {
370                         return Build (new string [] { target }, loggers);
371                 }
372
373                 public bool Build (string[] targets, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
374                 {
375                         // Unlike ProjectInstance.Build(), there is no place to fill outputs by targets, so ignore them
376                         // (i.e. we don't use the overload with output).
377                         //
378                         // This does not check FullPath, so don't call GetProjectInstanceForBuild() directly.
379                         return new BuildManager ().GetProjectInstanceForBuildInternal (this).Build (targets, loggers, remoteLoggers);
380                 }
381
382                 public bool Build (string target, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
383                 {
384                         return Build (new string [] { target }, loggers, remoteLoggers);
385                 }
386
387                 public ProjectInstance CreateProjectInstance ()
388                 {
389                         var ret = new ProjectInstance (Xml, GlobalProperties, ToolsVersion, ProjectCollection);
390                         // FIXME: maybe fill other properties to the result.
391                         return ret;
392                 }
393                 
394                 bool ShouldInclude (string unexpandedValue)
395                 {
396                         return string.IsNullOrWhiteSpace (unexpandedValue) || new ExpressionEvaluator (this, null).EvaluateAsBoolean (unexpandedValue);
397                 }
398
399                 public string ExpandString (string unexpandedValue)
400                 {
401                         return ExpandString (unexpandedValue, null);
402                 }
403                 
404                 string ExpandString (string unexpandedValue, string replacementForMissingStuff)
405                 {
406                         return new ExpressionEvaluator (this, replacementForMissingStuff).Evaluate (unexpandedValue);
407                 }
408
409                 public static string GetEvaluatedItemIncludeEscaped (ProjectItem item)
410                 {
411                         return ProjectCollection.Escape (item.EvaluatedInclude);
412                 }
413
414                 public static string GetEvaluatedItemIncludeEscaped (ProjectItemDefinition item)
415                 {
416                         throw new NotImplementedException ();
417                 }
418
419                 public ICollection<ProjectItem> GetItems (string itemType)
420                 {
421                         return new CollectionFromEnumerable<ProjectItem> (Items.Where (p => p.ItemType.Equals (itemType, StringComparison.OrdinalIgnoreCase)));
422                 }
423
424                 public ICollection<ProjectItem> GetItemsByEvaluatedInclude (string evaluatedInclude)
425                 {
426                         return new CollectionFromEnumerable<ProjectItem> (Items.Where (p => p.EvaluatedInclude.Equals (evaluatedInclude, StringComparison.OrdinalIgnoreCase)));
427                 }
428
429                 public IEnumerable<ProjectElement> GetLogicalProject ()
430                 {
431                         throw new NotImplementedException ();
432                 }
433
434                 public static string GetMetadataValueEscaped (ProjectMetadata metadatum)
435                 {
436                         return ProjectCollection.Escape (metadatum.EvaluatedValue);
437                 }
438
439                 public static string GetMetadataValueEscaped (ProjectItem item, string name)
440                 {
441                         var md = item.GetMetadata (name);
442                         return md != null ? ProjectCollection.Escape (md.EvaluatedValue) : null;
443                 }
444
445                 public static string GetMetadataValueEscaped (ProjectItemDefinition item, string name)
446                 {
447                         var md = item.Metadata.FirstOrDefault (m => m.Name == name);
448                         return md != null ? ProjectCollection.Escape (md.EvaluatedValue) : null;
449                 }
450
451                 public string GetPropertyValue (string name)
452                 {
453                         var prop = GetProperty (name);
454                         return prop != null ? prop.EvaluatedValue : string.Empty;
455                 }
456
457                 public static string GetPropertyValueEscaped (ProjectProperty property)
458                 {
459                         // WTF happens here.
460                         return property.EvaluatedValue;
461                 }
462
463                 public ProjectProperty GetProperty (string name)
464                 {
465                         return properties.FirstOrDefault (p => p.Name.Equals (name, StringComparison.OrdinalIgnoreCase));
466                 }
467
468                 public void MarkDirty ()
469                 {
470                         if (!DisableMarkDirty)
471                                 is_dirty = true;
472                 }
473
474                 public void ReevaluateIfNecessary ()
475                 {
476                         throw new NotImplementedException ();
477                 }
478
479                 public bool RemoveGlobalProperty (string name)
480                 {
481                         throw new NotImplementedException ();
482                 }
483
484                 public bool RemoveItem (ProjectItem item)
485                 {
486                         throw new NotImplementedException ();
487                 }
488
489                 public bool RemoveProperty (ProjectProperty property)
490                 {
491                         var removed = properties.FirstOrDefault (p => p.Name == property.Name);
492                         if (removed == null)
493                                 return false;
494                         properties.Remove (removed);
495                         return true;
496                 }
497
498                 public void Save ()
499                 {
500                         Xml.Save ();
501                 }
502
503                 public void Save (TextWriter writer)
504                 {
505                         Xml.Save (writer);
506                 }
507
508                 public void Save (string path)
509                 {
510                         Save (path, Encoding.Default);
511                 }
512
513                 public void Save (Encoding encoding)
514                 {
515                         Save (FullPath, encoding);
516                 }
517
518                 public void Save (string path, Encoding encoding)
519                 {
520                         using (var writer = new StreamWriter (path, false, encoding))
521                                 Save (writer);
522                 }
523
524                 public void SaveLogicalProject (TextWriter writer)
525                 {
526                         throw new NotImplementedException ();
527                 }
528
529                 public bool SetGlobalProperty (string name, string escapedValue)
530                 {
531                         throw new NotImplementedException ();
532                 }
533
534                 public ProjectProperty SetProperty (string name, string unevaluatedValue)
535                 {
536                         var p = new ManuallyAddedProjectProperty (this, name, unevaluatedValue);
537                         properties.Add (p);
538                         return p;
539                 }
540
541                 public ICollection<ProjectMetadata> AllEvaluatedItemDefinitionMetadata {
542                         get { throw new NotImplementedException (); }
543                 }
544
545                 public ICollection<ProjectItem> AllEvaluatedItems {
546                         get { return all_evaluated_items; }
547                 }
548
549                 public ICollection<ProjectProperty> AllEvaluatedProperties {
550                         get { return properties; }
551                 }
552
553                 public IDictionary<string, List<string>> ConditionedProperties {
554                         get {
555                                 // this property returns different instances every time.
556                                 var dic = new Dictionary<string, List<string>> ();
557                                 
558                                 // but I dunno HOW this evaluates
559                                 
560                                 throw new NotImplementedException ();
561                         }
562                 }
563
564                 public string DirectoryPath {
565                         get { return dir_path; }
566                 }
567
568                 public bool DisableMarkDirty { get; set; }
569
570                 public int EvaluationCounter {
571                         get { throw new NotImplementedException (); }
572                 }
573
574                 public string FullPath {
575                         get { return Xml.FullPath; }
576                         set { Xml.FullPath = value; }
577                 }
578                 
579                 class ResolvedImportComparer : IEqualityComparer<ResolvedImport>
580                 {
581                         public static ResolvedImportComparer Instance = new ResolvedImportComparer ();
582                         
583                         public bool Equals (ResolvedImport x, ResolvedImport y)
584                         {
585                                 return x.ImportedProject.FullPath.Equals (y.ImportedProject.FullPath);
586                         }
587                         public int GetHashCode (ResolvedImport obj)
588                         {
589                                 return obj.ImportedProject.FullPath.GetHashCode ();
590                         }
591                 }
592
593                 public IList<ResolvedImport> Imports {
594                         get { return raw_imports.Distinct (ResolvedImportComparer.Instance).ToList (); }
595                 }
596
597                 public IList<ResolvedImport> ImportsIncludingDuplicates {
598                         get { return raw_imports; }
599                 }
600
601                 public bool IsBuildEnabled {
602                         get { return ProjectCollection.IsBuildEnabled; }
603                 }
604
605                 bool is_dirty;
606                 public bool IsDirty {
607                         get { return is_dirty; }
608                 }
609
610                 public IDictionary<string, ProjectItemDefinition> ItemDefinitions {
611                         get { return item_definitions; }
612                 }
613
614                 [MonoTODO ("should be different from AllEvaluatedItems")]
615                 public ICollection<ProjectItem> Items {
616                         get { return AllEvaluatedItems; }
617                 }
618
619                 public ICollection<ProjectItem> ItemsIgnoringCondition {
620                         get { return raw_items; }
621                 }
622
623                 public ICollection<string> ItemTypes {
624                         get { return new CollectionFromEnumerable<string> (raw_items.Select (i => i.ItemType).Distinct ()); }
625                 }
626
627                 [MonoTODO ("should be different from AllEvaluatedProperties")]
628                 public ICollection<ProjectProperty> Properties {
629                         get { return AllEvaluatedProperties; }
630                 }
631
632                 public bool SkipEvaluation { get; set; }
633
634                 #if NET_4_5
635                 public
636                 #else
637                 internal
638                 #endif
639                 IDictionary<string, ProjectTargetInstance> Targets {
640                         get { return targets; }
641                 }
642                 
643                 // These are required for reserved property, represents dynamically changing property values.
644                 // This should resolve to either the project file path or that of the imported file.
645                 internal string GetEvaluationTimeThisFileDirectory ()
646                 {
647                         var file = GetEvaluationTimeThisFile ();
648                         var dir = Path.IsPathRooted (file) ? Path.GetDirectoryName (file) : Directory.GetCurrentDirectory ();
649                         return dir + Path.DirectorySeparatorChar;
650                 }
651
652                 internal string GetEvaluationTimeThisFile ()
653                 {
654                         return ProjectCollection.OngoingImports.Count > 0 ? ProjectCollection.OngoingImports.Peek () : FullPath;
655                 }
656         }
657 }