Merge branch 'master' into msbuilddll2
[mono.git] / mcs / class / Microsoft.Build / Microsoft.Build.Evaluation / Project.cs
index c87ae5c3dff13ade321ae07526016c4a29a9c324..7a1c1144d207c52781ce974885e55bf17cf1fcab 100644 (file)
@@ -4,9 +4,10 @@
 // Author:
 //   Leszek Ciesielski (skolima@gmail.com)
 //   Rolf Bjarne Kvinge (rolf@xamarin.com)
+//   Atsushi Enomoto (atsushi@xamarin.com)
 //
 // (C) 2011 Leszek Ciesielski
-// Copyright (C) 2011 Xamarin Inc. (http://www.xamarin.com)
+// Copyright (C) 2011,2013 Xamarin Inc. (http://www.xamarin.com)
 //
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the
@@ -36,383 +37,679 @@ using System.Linq;
 using System.Text;
 using System.Xml;
 using Microsoft.Build.Construction;
-using Microsoft.Build.Internal;
+using Microsoft.Build.Exceptions;
 using Microsoft.Build.Execution;
 using Microsoft.Build.Framework;
+using Microsoft.Build.Internal;
+using Microsoft.Build.Internal.Expressions;
 using Microsoft.Build.Logging;
+using System.Collections;
+
+// Basically there are two semantic Project object models and their relationship is not obvious
+// (apart from Microsoft.Build.Construction.ProjectRootElement which is a "construction rule").
+//
+// Microsoft.Build.Evaluation.Project holds some "editable" project model, and it supports
+// detailed loader API (such as Items and AllEvaluatedItems).
+// ProjectPoperty holds UnevaluatedValue and gives EvaluatedValue too.
+//
+// Microsoft.Build.Execution.ProjectInstance holds "snapshot" of a project, and it lacks
+// detailed loader API. It does not give us Unevaluated property value.
+// On the other hand, it supports Targets object model. What Microsoft.Build.Evaluation.Project
+// offers there is actually a list of Microsoft.Build.Execution.ProjectInstance objects.
+// It should be also noted that only ProjectInstance has Evaluate() method (Project doesn't).
+//
+// And both API holds different set of descendant types for each and cannot really share the
+// loader code. That is lame.
+//
+// So, can either of them be used to construct the other model? Both API models share the same
+// "governor", which is Microsoft.Build.Evaluation.ProjectCollection/ Project is added to
+// its LoadedProjects list, while ProjectInstance isn't. Project cannot be loaded to load
+// a ProjectInstance, at least within the same ProjectCollection.
+//
+// On the other hand, can ProjectInstance be used to load a Project? Maybe. Since Project and
+// its descendants need Microsoft.Build.Construction.ProjectElement family as its API model
+// is part of the public API. Then I still have to understand how those AllEvaluatedItems/
+// AllEvaluatedProperties members make sense. EvaluationCounter is another propery in question.
 
 namespace Microsoft.Build.Evaluation
 {
-        [DebuggerDisplay("{FullPath} EffectiveToolsVersion={ToolsVersion} #GlobalProperties="
-                         +"{data.globalProperties.Count} #Properties={data.Properties.Count} #ItemTypes="
-                         +"{data.ItemTypes.Count} #ItemDefinitions={data.ItemDefinitions.Count} #Items="
-                         +"{data.Items.Count} #Targets={data.Targets.Count}")]
-        public class Project
-        {
+       [DebuggerDisplay ("{FullPath} EffectiveToolsVersion={ToolsVersion} #GlobalProperties="
+       "{data.globalProperties.Count} #Properties={data.Properties.Count} #ItemTypes="
+       "{data.ItemTypes.Count} #ItemDefinitions={data.ItemDefinitions.Count} #Items="
+       "{data.Items.Count} #Targets={data.Targets.Count}")]
+       public class Project
+       {
                public Project (XmlReader xml)
                        : this (ProjectRootElement.Create (xml))
                {
                }
-                public Project (XmlReader xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion)
+
+               public Project (XmlReader xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion)
                        : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion)
                {
                }
-                public Project (XmlReader xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection)
+
+               public Project (XmlReader xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion, ProjectCollection projectCollection)
                        : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion, projectCollection)
                {
                }
-                public Project (XmlReader xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection,
-                                ProjectLoadSettings loadSettings)
+
+               public Project (XmlReader xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion, ProjectCollection projectCollection,
+                                             ProjectLoadSettings loadSettings)
                        : this (ProjectRootElement.Create (xml), globalProperties, toolsVersion, projectCollection, loadSettings)
                {
                }
 
-                public Project (ProjectRootElement xml) : this(xml, null, null)
-                {
-                }
-                public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion)
-                        : this(xml, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection)
-                {
-                }
-                public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection)
-                        : this(xml, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
-                {
-                }
-
-                public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection,
-                                ProjectLoadSettings loadSettings)
-                {
-                        ProjectCollection = projectCollection;
-                        Xml = xml;
-                        GlobalProperties = globalProperties;
-                        ToolsVersion = toolsVersion;
-                }
-
-                public Project (string projectFile) : this(projectFile, null, null)
-                {
-                }
-
-                public Project (string projectFile, IDictionary<string, string> globalProperties,
-                                string toolsVersion)
-                        : this(projectFile, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection, ProjectLoadSettings.Default)
-                {
-                }
-
-                public Project (string projectFile, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection)
-                        : this(projectFile, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
-                {
-                }
-
-                public Project (string projectFile, IDictionary<string, string> globalProperties,
-                                string toolsVersion, ProjectCollection projectCollection,
-                                ProjectLoadSettings loadSettings)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public IDictionary<string, string> GlobalProperties { get; private set; }
-                public ProjectCollection ProjectCollection { get; private set; }
-                public string ToolsVersion { get; private set; }
-                public ProjectRootElement Xml { get; private set; }
-
-                public ICollection<ProjectItem> GetItemsIgnoringCondition (string itemType)
-                {
-                        return new CollectionFromEnumerable<ProjectItem> (
-                                new FilteredEnumerable<ProjectItemElement> (Xml.Items).
-                                Where (p => p.ItemType.Equals (itemType, StringComparison.OrdinalIgnoreCase)).
-                                Select (p => new ProjectItem(p)));
-                }
-                public void RemoveItems (IEnumerable<ProjectItem> items)
-                {
-                        var removal = new List<ProjectItem> (items);
-                        foreach (var item in removal) {
-                                var parent = item.Xml.Parent;
-                                parent.RemoveChild (item.Xml);
-                                if (parent.Count == 0)
-                                        parent.Parent.RemoveChild (parent);
-                        }
-                }
-
-                public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude,
-                        IEnumerable<KeyValuePair<string, string>> metadata)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude,
-                        IEnumerable<KeyValuePair<string, string>> metadata)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (IEnumerable<ILogger> loggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string target)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string[] targets)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (ILogger logger)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string[] targets, IEnumerable<ILogger> loggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string target, IEnumerable<ILogger> loggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string[] targets, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool Build (string target, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ProjectInstance CreateProjectInstance ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public string ExpandString (string unexpandedValue)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetEvaluatedItemIncludeEscaped (ProjectItem item)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetEvaluatedItemIncludeEscaped (ProjectItemDefinition item)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ICollection<ProjectItem> GetItems (string itemType)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ICollection<ProjectItem> GetItemsByEvaluatedInclude (string evaluatedInclude)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public IEnumerable<ProjectElement> GetLogicalProject ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetMetadataValueEscaped (ProjectMetadata metadatum)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetMetadataValueEscaped (ProjectItem item, string name)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetMetadataValueEscaped (ProjectItemDefinition item, string name)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public string GetPropertyValue (string name)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public static string GetPropertyValueEscaped (ProjectProperty property)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ProjectProperty GetProperty (string name)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void MarkDirty ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void ReevaluateIfNecessary ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool RemoveGlobalProperty (string name)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool RemoveItem (ProjectItem item)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool RemoveProperty (ProjectProperty property)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void Save ()
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void Save (TextWriter writer)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void Save (string path)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void Save (Encoding encoding)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void Save (string path, Encoding encoding)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public void SaveLogicalProject (TextWriter writer)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public bool SetGlobalProperty (string name, string escapedValue)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ProjectProperty SetProperty (string name, string unevaluatedValue)
-                {
-                        throw new NotImplementedException ();
-                }
-
-                public ICollection<ProjectMetadata> AllEvaluatedItemDefinitionMetadata {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<ProjectItem> AllEvaluatedItems {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<ProjectProperty> AllEvaluatedProperties {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public IDictionary<string, List<string>> ConditionedProperties {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public string DirectoryPath {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public bool DisableMarkDirty { get; set; }
-
-                public int EvaluationCounter {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public string FullPath {
-                        get { throw new NotImplementedException (); }
-                        set { throw new NotImplementedException (); }
-                }
-
-                public IList<ResolvedImport> Imports {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public IList<ResolvedImport> ImportsIncludingDuplicates {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public bool IsBuildEnabled {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public bool IsDirty {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public IDictionary<string, ProjectItemDefinition> ItemDefinitions {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<ProjectItem> Items {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<ProjectItem> ItemsIgnoringCondition {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<string> ItemTypes {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public ICollection<ProjectProperty> Properties {
-                        get { throw new NotImplementedException (); }
-                }
-
-                public bool SkipEvaluation { get; set; }
-
-                public IDictionary<string, ProjectTargetInstance> Targets {
-                        get { throw new NotImplementedException (); }
-                }
-        }
+               public Project (ProjectRootElement xml) : this (xml, null, null)
+               {
+               }
+
+               public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion)
+                        : this (xml, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection)
+               {
+               }
+
+               public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion, ProjectCollection projectCollection)
+                        : this (xml, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
+               {
+               }
+
+               public Project (ProjectRootElement xml, IDictionary<string, string> globalProperties,
+                                             string toolsVersion, ProjectCollection projectCollection,
+                                             ProjectLoadSettings loadSettings)
+               {
+                       if (projectCollection == null)
+                               throw new ArgumentNullException ("projectCollection");
+                       this.Xml = xml;
+                       this.GlobalProperties = globalProperties ?? new Dictionary<string, string> ();
+                       this.ToolsVersion = toolsVersion;
+                       this.ProjectCollection = projectCollection;
+                       this.load_settings = loadSettings;
+
+                       Initialize (null);
+               }
+               
+               Project (ProjectRootElement imported, Project parent)
+               {
+                       this.Xml = imported;
+                       this.GlobalProperties = parent.GlobalProperties;
+                       this.ToolsVersion = parent.ToolsVersion;
+                       this.ProjectCollection = parent.ProjectCollection;
+                       this.load_settings = parent.load_settings;
+
+                       Initialize (parent);
+               }
+
+               public Project (string projectFile)
+                       : this (projectFile, null, null)
+               {
+               }
+
+               public Project (string projectFile, IDictionary<string, string> globalProperties,
+                               string toolsVersion)
+               : this (projectFile, globalProperties, toolsVersion, ProjectCollection.GlobalProjectCollection, ProjectLoadSettings.Default)
+               {
+               }
+
+               public Project (string projectFile, IDictionary<string, string> globalProperties,
+                               string toolsVersion, ProjectCollection projectCollection)
+               : this (projectFile, globalProperties, toolsVersion, projectCollection, ProjectLoadSettings.Default)
+               {
+               }
+
+               public Project (string projectFile, IDictionary<string, string> globalProperties,
+                               string toolsVersion, ProjectCollection projectCollection,
+                               ProjectLoadSettings loadSettings)
+                       : this (ProjectRootElement.Create (projectFile), globalProperties, toolsVersion, projectCollection, loadSettings)
+               {
+               }
+
+               ProjectLoadSettings load_settings;
+
+               public IDictionary<string, string> GlobalProperties { get; private set; }
+
+               public ProjectCollection ProjectCollection { get; private set; }
+
+               public string ToolsVersion { get; private set; }
+
+               public ProjectRootElement Xml { get; private set; }
+
+               string dir_path;
+               Dictionary<string, ProjectItemDefinition> item_definitions;
+               List<ResolvedImport> raw_imports;
+               List<ProjectItem> raw_items;
+               List<ProjectItem> all_evaluated_items;
+               List<ProjectProperty> properties;
+               Dictionary<string, ProjectTargetInstance> targets;
+
+               void Initialize (Project parent)
+               {
+                       dir_path = Directory.GetCurrentDirectory ();
+                       raw_imports = new List<ResolvedImport> ();
+                       item_definitions = new Dictionary<string, ProjectItemDefinition> ();
+                       targets = new Dictionary<string, ProjectTargetInstance> ();
+                       raw_items = new List<ProjectItem> ();
+                       
+                       // FIXME: this is likely hack. Test ImportedProject.Properties to see what exactly should happen.
+                       if (parent != null) {
+                               properties = parent.properties;
+                       } else {
+                               properties = new List<ProjectProperty> ();
+                       
+                               foreach (DictionaryEntry p in Environment.GetEnvironmentVariables ())
+                                       // FIXME: this is kind of workaround for unavoidable issue that PLATFORM=* is actually given
+                                       // on some platforms and that prevents setting default "PLATFORM=AnyCPU" property.
+                                       if (!string.Equals ("PLATFORM", (string) p.Key, StringComparison.OrdinalIgnoreCase))
+                                               this.properties.Add (new EnvironmentProjectProperty (this, (string)p.Key, (string)p.Value));
+                               foreach (var p in GlobalProperties)
+                                       this.properties.Add (new GlobalProjectProperty (this, p.Key, p.Value));
+                               var tools = ProjectCollection.GetToolset (this.ToolsVersion) ?? ProjectCollection.GetToolset (this.ProjectCollection.DefaultToolsVersion);
+                               foreach (var p in ProjectCollection.GetReservedProperties (tools, this))
+                                       this.properties.Add (p);
+                               foreach (var p in ProjectCollection.GetWellKnownProperties (this))
+                                       this.properties.Add (p);
+                       }
+
+                       ProcessXml (parent);
+                       
+                       ProjectCollection.AddProject (this);
+               }
+               
+               void ProcessXml (Project parent)
+               {
+                       // this needs to be initialized here (regardless of that items won't be evaluated at property evaluation;
+                       // Conditions could incorrectly reference items and lack of this list causes NRE.
+                       all_evaluated_items = new List<ProjectItem> ();
+
+                       // property evaluation happens couple of times.
+                       // At first step, all non-imported properties are evaluated TOO, WHILE those properties are being evaluated.
+                       // This means, Include and IncludeGroup elements with Condition attribute MAY contain references to
+                       // properties and they will be expanded.
+                       var elements = EvaluatePropertiesAndImports (Xml.Children).ToArray (); // ToArray(): to not lazily evaluate elements.
+                       
+                       // next, evaluate items
+                       EvaluateItems (elements);
+                       
+                       // finally, evaluate targets and tasks
+                       EvaluateTargets (elements);
+               }
+               
+               IEnumerable<ProjectElement> EvaluatePropertiesAndImports (IEnumerable<ProjectElement> elements)
+               {
+                       // First step: evaluate Properties
+                       foreach (var child in elements) {
+                               yield return child;
+                               var pge = child as ProjectPropertyGroupElement;
+                               if (pge != null && Evaluate (pge.Condition))
+                                       foreach (var p in pge.Properties)
+                                               // do not allow overwriting reserved or well-known properties by user
+                                               if (!this.properties.Any (_ => (_.IsReservedProperty || _.IsWellKnownProperty) && _.Name.Equals (p.Name, StringComparison.InvariantCultureIgnoreCase)))
+                                                       if (Evaluate (p.Condition))
+                                                               this.properties.Add (new XmlProjectProperty (this, p, PropertyType.Normal, ProjectCollection.OngoingImports.Any ()));
+
+                               var ige = child as ProjectImportGroupElement;
+                               if (ige != null && Evaluate (ige.Condition)) {
+                                       foreach (var incc in ige.Imports) {
+                                               foreach (var e in Import (incc))
+                                                       yield return e;
+                                       }
+                               }
+                               var inc = child as ProjectImportElement;
+                               if (inc != null && Evaluate (inc.Condition))
+                                       foreach (var e in Import (inc))
+                                               yield return e;
+                       }
+               }
+               
+               internal IEnumerable<T> GetAllItems<T> (string include, string exclude, Func<string,T> creator, Func<string,ITaskItem> taskItemCreator, Func<string,bool> itemTypeCheck, Action<T,string> assignRecurse)
+               {
+                       return ProjectCollection.GetAllItems<T> (ExpandString, include, exclude, creator, taskItemCreator, DirectoryPath, assignRecurse,
+                               t => all_evaluated_items.Any (i => i.EvaluatedInclude == t.ItemSpec && itemTypeCheck (i.ItemType)));
+               }
+
+               void EvaluateItems (IEnumerable<ProjectElement> elements)
+               {
+                       foreach (var child in elements) {
+                               var ige = child as ProjectItemGroupElement;
+                               if (ige != null) {
+                                       foreach (var p in ige.Items) {
+                                               if (!Evaluate (ige.Condition) || !Evaluate (p.Condition))
+                                                       continue;
+                                               Func<string,ProjectItem> creator = s => new ProjectItem (this, p, s);
+                                               foreach (var item in GetAllItems<ProjectItem> (p.Include, p.Exclude, creator, s => new ProjectTaskItem (p, s), it => string.Equals (it, p.ItemType, StringComparison.OrdinalIgnoreCase), (t, s) => t.RecursiveDir = s)) {
+                                                       raw_items.Add (item);
+                                                       all_evaluated_items.Add (item);
+                                               }
+                                       }
+                               }
+                               var def = child as ProjectItemDefinitionGroupElement;
+                               if (def != null) {
+                                       foreach (var p in def.ItemDefinitions) {
+                                               if (Evaluate (p.Condition)) {
+                                                       ProjectItemDefinition existing;
+                                                       if (!item_definitions.TryGetValue (p.ItemType, out existing))
+                                                               item_definitions.Add (p.ItemType, (existing = new ProjectItemDefinition (this, p.ItemType)));
+                                                       existing.AddItems (p);
+                                               }
+                                       }
+                               }
+                       }
+                       all_evaluated_items.Sort ((p1, p2) => string.Compare (p1.ItemType, p2.ItemType, StringComparison.OrdinalIgnoreCase));
+               }
+               
+               void EvaluateTargets (IEnumerable<ProjectElement> elements)
+               {
+                       foreach (var child in elements) {
+                               var te = child as ProjectTargetElement;
+                               if (te != null)
+                                       this.targets.Add (te.Name, new ProjectTargetInstance (te));
+                       }
+               }
+               
+               IEnumerable<ProjectElement> Import (ProjectImportElement import)
+               {
+                       string dir = ProjectCollection.GetEvaluationTimeThisFileDirectory (() => FullPath);
+                       string path = WindowsCompatibilityExtensions.NormalizeFilePath (ExpandString (import.Project));
+                       path = Path.IsPathRooted (path) ? path : dir != null ? Path.Combine (dir, path) : Path.GetFullPath (path);
+                       if (ProjectCollection.OngoingImports.Contains (path)) {
+                               switch (load_settings) {
+                               case ProjectLoadSettings.RejectCircularImports:
+                                       throw new InvalidProjectFileException (import.Location, null, string.Format ("Circular imports was detected: {0} (resolved as \"{1}\") is already on \"importing\" stack", import.Project, path));
+                               }
+                               return new ProjectElement [0]; // do not import circular references
+                       }
+                       ProjectCollection.OngoingImports.Push (path);
+                       try {
+                               using (var reader = XmlReader.Create (path)) {
+                                       var root = ProjectRootElement.Create (reader, ProjectCollection);
+                                       raw_imports.Add (new ResolvedImport (import, root, true));
+                                       return this.EvaluatePropertiesAndImports (root.Children).ToArray ();
+                               }
+                       } finally {
+                               ProjectCollection.OngoingImports.Pop ();
+                       }
+               }
+
+               public ICollection<ProjectItem> GetItemsIgnoringCondition (string itemType)
+               {
+                       return new CollectionFromEnumerable<ProjectItem> (raw_items.Where (p => p.ItemType.Equals (itemType, StringComparison.OrdinalIgnoreCase)));
+               }
+
+               public void RemoveItems (IEnumerable<ProjectItem> items)
+               {
+                       var removal = new List<ProjectItem> (items);
+                       foreach (var item in removal) {
+                               var parent = item.Xml.Parent;
+                               parent.RemoveChild (item.Xml);
+                               if (parent.Count == 0)
+                                       parent.Parent.RemoveChild (parent);
+                       }
+               }
+
+               static readonly Dictionary<string, string> empty_metadata = new Dictionary<string, string> ();
+
+               public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude)
+               {
+                       return AddItem (itemType, unevaluatedInclude, empty_metadata);
+               }
+
+               public IList<ProjectItem> AddItem (string itemType, string unevaluatedInclude,
+                               IEnumerable<KeyValuePair<string, string>> metadata)
+               {
+                       // FIXME: needs several check that AddItemFast() does not process (see MSDN for details).
+
+                       return AddItemFast (itemType, unevaluatedInclude, metadata);
+               }
+
+               public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude)
+               {
+                       return AddItemFast (itemType, unevaluatedInclude, empty_metadata);
+               }
+
+               public IList<ProjectItem> AddItemFast (string itemType, string unevaluatedInclude,
+                                                                    IEnumerable<KeyValuePair<string, string>> metadata)
+               {
+                       throw new NotImplementedException ();
+               }
+               
+               static readonly char [] target_sep = new char[] {';'};
+
+               public bool Build ()
+               {
+                       return Build (Xml.DefaultTargets.Split (target_sep, StringSplitOptions.RemoveEmptyEntries));
+               }
+
+               public bool Build (IEnumerable<ILogger> loggers)
+               {
+                       return Build (Xml.DefaultTargets.Split (target_sep, StringSplitOptions.RemoveEmptyEntries), loggers);
+               }
+
+               public bool Build (string target)
+               {
+                       return string.IsNullOrWhiteSpace (target) ? Build () : Build (new string [] {target});
+               }
+
+               public bool Build (string[] targets)
+               {
+                       return Build (targets, new ILogger [0]);
+               }
+
+               public bool Build (ILogger logger)
+               {
+                       return Build (Xml.DefaultTargets.Split (target_sep, StringSplitOptions.RemoveEmptyEntries), new ILogger [] {logger});
+               }
+
+               public bool Build (string[] targets, IEnumerable<ILogger> loggers)
+               {
+                       return Build (targets, loggers, new ForwardingLoggerRecord [0]);
+               }
+
+               public bool Build (IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
+               {
+                       return Build (Xml.DefaultTargets.Split (target_sep, StringSplitOptions.RemoveEmptyEntries), loggers, remoteLoggers);
+               }
+
+               public bool Build (string target, IEnumerable<ILogger> loggers)
+               {
+                       return Build (new string [] { target }, loggers);
+               }
+
+               public bool Build (string[] targets, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
+               {
+                       // Unlike ProjectInstance.Build(), there is no place to fill outputs by targets, so ignore them
+                       // (i.e. we don't use the overload with output).
+                       //
+                       // This does not check FullPath, so don't call GetProjectInstanceForBuild() directly.
+                       return new BuildManager ().GetProjectInstanceForBuildInternal (this).Build (targets, loggers, remoteLoggers);
+               }
+
+               public bool Build (string target, IEnumerable<ILogger> loggers, IEnumerable<ForwardingLoggerRecord> remoteLoggers)
+               {
+                       return Build (new string [] { target }, loggers, remoteLoggers);
+               }
+
+               public ProjectInstance CreateProjectInstance ()
+               {
+                       var ret = new ProjectInstance (Xml, GlobalProperties, ToolsVersion, ProjectCollection);
+                       // FIXME: maybe fill other properties to the result.
+                       return ret;
+               }
+               
+               bool Evaluate (string unexpandedValue)
+               {
+                       return string.IsNullOrWhiteSpace (unexpandedValue) || new ExpressionEvaluator (this, null).EvaluateAsBoolean (unexpandedValue);
+               }
+
+               public string ExpandString (string unexpandedValue)
+               {
+                       return ExpandString (unexpandedValue, null);
+               }
+               
+               string ExpandString (string unexpandedValue, string replacementForMissingStuff)
+               {
+                       return new ExpressionEvaluator (this, replacementForMissingStuff).Evaluate (unexpandedValue);
+               }
+
+               public static string GetEvaluatedItemIncludeEscaped (ProjectItem item)
+               {
+                       return ProjectCollection.Escape (item.EvaluatedInclude);
+               }
+
+               public static string GetEvaluatedItemIncludeEscaped (ProjectItemDefinition item)
+               {
+                       // ?? ItemDefinition does not have Include attribute. What's the point here?
+                       throw new NotImplementedException ();
+               }
+
+               public ICollection<ProjectItem> GetItems (string itemType)
+               {
+                       return new CollectionFromEnumerable<ProjectItem> (Items.Where (p => p.ItemType.Equals (itemType, StringComparison.OrdinalIgnoreCase)));
+               }
+
+               public ICollection<ProjectItem> GetItemsByEvaluatedInclude (string evaluatedInclude)
+               {
+                       return new CollectionFromEnumerable<ProjectItem> (Items.Where (p => p.EvaluatedInclude.Equals (evaluatedInclude, StringComparison.OrdinalIgnoreCase)));
+               }
+
+               public IEnumerable<ProjectElement> GetLogicalProject ()
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public static string GetMetadataValueEscaped (ProjectMetadata metadatum)
+               {
+                       return ProjectCollection.Escape (metadatum.EvaluatedValue);
+               }
+
+               public static string GetMetadataValueEscaped (ProjectItem item, string name)
+               {
+                       var md = item.Metadata.FirstOrDefault (m => m.Name.Equals (name, StringComparison.OrdinalIgnoreCase));
+                       return md != null ? ProjectCollection.Escape (md.EvaluatedValue) : null;
+               }
+
+               public static string GetMetadataValueEscaped (ProjectItemDefinition item, string name)
+               {
+                       var md = item.Metadata.FirstOrDefault (m => m.Name.Equals (name, StringComparison.OrdinalIgnoreCase));
+                       return md != null ? ProjectCollection.Escape (md.EvaluatedValue) : null;
+               }
+
+               public string GetPropertyValue (string name)
+               {
+                       var prop = GetProperty (name);
+                       return prop != null ? prop.EvaluatedValue : string.Empty;
+               }
+
+               public static string GetPropertyValueEscaped (ProjectProperty property)
+               {
+                       // WTF happens here.
+                       //return ProjectCollection.Escape (property.EvaluatedValue);
+                       return property.EvaluatedValue;
+               }
+
+               public ProjectProperty GetProperty (string name)
+               {
+                       return properties.FirstOrDefault (p => p.Name.Equals (name, StringComparison.OrdinalIgnoreCase));
+               }
+
+               public void MarkDirty ()
+               {
+                       if (!DisableMarkDirty)
+                               is_dirty = true;
+               }
+
+               public void ReevaluateIfNecessary ()
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public bool RemoveGlobalProperty (string name)
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public bool RemoveItem (ProjectItem item)
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public bool RemoveProperty (ProjectProperty property)
+               {
+                       var removed = properties.FirstOrDefault (p => p.Name.Equals (property.Name, StringComparison.OrdinalIgnoreCase));
+                       if (removed == null)
+                               return false;
+                       properties.Remove (removed);
+                       return true;
+               }
+
+               public void Save ()
+               {
+                       Xml.Save ();
+               }
+
+               public void Save (TextWriter writer)
+               {
+                       Xml.Save (writer);
+               }
+
+               public void Save (string path)
+               {
+                       Save (path, Encoding.Default);
+               }
+
+               public void Save (Encoding encoding)
+               {
+                       Save (FullPath, encoding);
+               }
+
+               public void Save (string path, Encoding encoding)
+               {
+                       using (var writer = new StreamWriter (path, false, encoding))
+                               Save (writer);
+               }
+
+               public void SaveLogicalProject (TextWriter writer)
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public bool SetGlobalProperty (string name, string escapedValue)
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public ProjectProperty SetProperty (string name, string unevaluatedValue)
+               {
+                       var p = new ManuallyAddedProjectProperty (this, name, unevaluatedValue);
+                       properties.Add (p);
+                       return p;
+               }
+
+               public ICollection<ProjectMetadata> AllEvaluatedItemDefinitionMetadata {
+                       get { throw new NotImplementedException (); }
+               }
+
+               public ICollection<ProjectItem> AllEvaluatedItems {
+                       get { return all_evaluated_items; }
+               }
+
+               public ICollection<ProjectProperty> AllEvaluatedProperties {
+                       get { return properties; }
+               }
+
+               public IDictionary<string, List<string>> ConditionedProperties {
+                       get {
+                               // this property returns different instances every time.
+                               var dic = new Dictionary<string, List<string>> ();
+                               
+                               // but I dunno HOW this evaluates
+                               
+                               throw new NotImplementedException ();
+                       }
+               }
+
+               public string DirectoryPath {
+                       get { return dir_path; }
+               }
+
+               public bool DisableMarkDirty { get; set; }
+
+               public int EvaluationCounter {
+                       get { throw new NotImplementedException (); }
+               }
+
+               public string FullPath {
+                       get { return Xml.FullPath; }
+                       set { Xml.FullPath = value; }
+               }
+               
+               class ResolvedImportComparer : IEqualityComparer<ResolvedImport>
+               {
+                       public static ResolvedImportComparer Instance = new ResolvedImportComparer ();
+                       
+                       public bool Equals (ResolvedImport x, ResolvedImport y)
+                       {
+                               return x.ImportedProject.FullPath.Equals (y.ImportedProject.FullPath);
+                       }
+                       public int GetHashCode (ResolvedImport obj)
+                       {
+                               return obj.ImportedProject.FullPath.GetHashCode ();
+                       }
+               }
+
+               public IList<ResolvedImport> Imports {
+                       get { return raw_imports.Distinct (ResolvedImportComparer.Instance).ToList (); }
+               }
+
+               public IList<ResolvedImport> ImportsIncludingDuplicates {
+                       get { return raw_imports; }
+               }
+
+               public bool IsBuildEnabled {
+                       get { return ProjectCollection.IsBuildEnabled; }
+               }
+
+               bool is_dirty;
+               public bool IsDirty {
+                       get { return is_dirty; }
+               }
+
+               public IDictionary<string, ProjectItemDefinition> ItemDefinitions {
+                       get { return item_definitions; }
+               }
+
+               [MonoTODO ("should be different from AllEvaluatedItems")]
+               public ICollection<ProjectItem> Items {
+                       get { return AllEvaluatedItems; }
+               }
+
+               public ICollection<ProjectItem> ItemsIgnoringCondition {
+                       get { return raw_items; }
+               }
+
+               public ICollection<string> ItemTypes {
+                       get { return new CollectionFromEnumerable<string> (raw_items.Select (i => i.ItemType).Distinct ()); }
+               }
+
+               [MonoTODO ("should be different from AllEvaluatedProperties")]
+               public ICollection<ProjectProperty> Properties {
+                       get { return AllEvaluatedProperties; }
+               }
+
+               public bool SkipEvaluation { get; set; }
+
+               #if NET_4_5
+               public
+               #else
+               internal
+               #endif
+               IDictionary<string, ProjectTargetInstance> Targets {
+                       get { return targets; }
+               }
+               
+               // These are required for reserved property, represents dynamically changing property values.
+               // This should resolve to either the project file path or that of the imported file.
+               internal string GetEvaluationTimeThisFileDirectory ()
+               {
+                       var file = GetEvaluationTimeThisFile ();
+                       var dir = Path.IsPathRooted (file) ? Path.GetDirectoryName (file) : Directory.GetCurrentDirectory ();
+                       return dir + Path.DirectorySeparatorChar;
+               }
+
+               internal string GetEvaluationTimeThisFile ()
+               {
+                       return ProjectCollection.OngoingImports.Count > 0 ? ProjectCollection.OngoingImports.Peek () : FullPath ?? string.Empty;
+               }
+               
+               internal string GetFullPath (string pathRelativeToProject)
+               {
+                       if (Path.IsPathRooted (pathRelativeToProject))
+                               return pathRelativeToProject;
+                       return Path.GetFullPath (Path.Combine (DirectoryPath, pathRelativeToProject));
+               }
+       }
 }