Add support for caching project contents on disk.

src/AddIns/BackendBindings/XamlBinding/XamlBinding/XamlParsedFile.cs

@@ -53,10 +53,11 @@ namespace ICSharpCode.XamlBinding
 			get { return fileName; }
 		}
 		
-		DateTime lastWriteTime = DateTime.UtcNow;
+		DateTime? lastWriteTime;
 		
-		public DateTime LastWriteTime {
+		public DateTime? LastWriteTime {
 			get { return lastWriteTime; }
+			set { lastWriteTime = value; }
 		}
 		
 		public IList<IUnresolvedTypeDefinition> TopLevelTypeDefinitions {

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/TypeSystem/CSharpParsedFile.cs

@@ -73,9 +73,9 @@ namespace ICSharpCode.NRefactory.CSharp.TypeSystem
 			get { return fileName; }
 		}
 		
-		DateTime lastWriteTime = DateTime.UtcNow;
+		DateTime? lastWriteTime;
 		
-		public DateTime LastWriteTime {
+		public DateTime? LastWriteTime {
 			get { return lastWriteTime; }
 			set {
 				FreezableHelper.ThrowIfFrozen(this);

src/Libraries/NRefactory/ICSharpCode.NRefactory/TypeSystem/IParsedFile.cs

@@ -34,7 +34,7 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		/// <summary>
 		/// Gets the time when the file was last written.
 		/// </summary>
-		DateTime LastWriteTime { get; }
+		DateTime? LastWriteTime { get; set; }
 		
 		/// <summary>
 		/// Gets all top-level type definitions.

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -357,6 +357,7 @@
     <Compile Include="Src\Services\DisplayBinding\ShellExecuteDisplayBinding.cs" />
     <Compile Include="Src\Services\File\FileChangeWatcher.cs" />
     <Compile Include="Src\Services\File\IFileService.cs" />
+    <Compile Include="Src\Services\File\OnDiskTextSourceVersion.cs" />
     <Compile Include="Src\Services\File\OpenedFile.cs" />
     <Compile Include="Src\Services\IMessageLoop.cs" />
     <Compile Include="Src\Services\LanguageBinding\AggregatedLanguageBinding.cs" />

src/Main/Base/Project/Src/Project/AbstractProject.cs

@@ -572,8 +572,17 @@ namespace ICSharpCode.SharpDevelop.Project
 			return false;
 		}
 		
+		Properties projectSpecificProperties = new Properties();
+		
 		[Browsable(false)]
-		public Properties ProjectSpecificProperties { get; protected set; }
+		public Properties ProjectSpecificProperties {
+			get { return projectSpecificProperties; }
+			set {
+				if (value == null)
+					throw new ArgumentNullException();
+				projectSpecificProperties = value;
+			}
+		}
 		
 		public virtual string GetDefaultNamespace(string fileName)
 		{

src/Main/Base/Project/Src/Services/File/OnDiskTextSourceVersion.cs

@@ -0,0 +1,49 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.NRefactory;
+using ICSharpCode.NRefactory.Editor;
+
+namespace ICSharpCode.SharpDevelop
+{
+	/// <summary>
+	/// Signifies that the text source matches the version of the file on disk.
+	/// </summary>
+	public sealed class OnDiskTextSourceVersion : ITextSourceVersion
+	{
+		public readonly DateTime LastWriteTime;
+		
+		public OnDiskTextSourceVersion(DateTime lastWriteTime)
+		{
+			this.LastWriteTime = lastWriteTime;
+		}
+		
+		public bool BelongsToSameDocumentAs(ITextSourceVersion other)
+		{
+			return this == other;
+		}
+		
+		public int CompareAge(ITextSourceVersion other)
+		{
+			if (this != other)
+				throw new ArgumentException("other belongs to different document");
+			return 0;
+		}
+		
+		public IEnumerable<TextChangeEventArgs> GetChangesTo(ITextSourceVersion other)
+		{
+			if (this != other)
+				throw new ArgumentException("other belongs to different document");
+			return EmptyList<TextChangeEventArgs>.Instance;
+		}
+		
+		public int MoveOffsetTo(ITextSourceVersion other, int oldOffset, AnchorMovementType movement)
+		{
+			if (this != other)
+				throw new ArgumentException("other belongs to different document");
+			return oldOffset;
+		}
+	}
+}

src/Main/Base/Project/Src/Services/ParserService/IParserService.cs

@@ -269,6 +269,13 @@ namespace ICSharpCode.SharpDevelop.Parser
 		/// </summary>
 		event EventHandler<ParseInformationEventArgs> ParseInformationUpdated;
 		#endregion
+		
+		/// <summary>
+		/// Registers parse information for the specified file.
+		/// The file must belong to the specified project, otherwise this method does nothing.
+		/// </summary>
+		/// <remarks>This method is intended for restoring parse information cached on disk.</remarks>
+		void RegisterParsedFile(FileName fileName, IProject project, IParsedFile parsedFile);
 	}
 	
 	public interface ILoadSolutionProjectsThread

src/Main/Base/Project/Src/Services/ParserService/ParseProjectContent.cs

@@ -5,12 +5,15 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Runtime.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
+
 using ICSharpCode.Core;
 using ICSharpCode.NRefactory.Editor;
 using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.NRefactory.TypeSystem.Implementation;
+using ICSharpCode.NRefactory.Utils;
 using ICSharpCode.SharpDevelop.Gui;
 using ICSharpCode.SharpDevelop.Project;
 
@@ -33,6 +36,8 @@ namespace ICSharpCode.SharpDevelop.Parser
 		// time necessary for loading references, in relation to time for a single C# file
 		const int LoadingReferencesWorkAmount = 15;
 		
+		string cacheFileName;
+		
 		public ParseProjectContentContainer(MSBuildBasedProject project, IProjectContent initialProjectContent)
 		{
 			if (project == null)
@@ -40,6 +45,8 @@ namespace ICSharpCode.SharpDevelop.Parser
 			this.project = project;
 			this.projectContent = initialProjectContent.SetAssemblyName(project.AssemblyName);
 			
+			this.cacheFileName = GetCacheFileName(FileName.Create(project.FileName));
+			
 			ProjectService.ProjectItemAdded += OnProjectItemAdded;
 			ProjectService.ProjectItemRemoved += OnProjectItemRemoved;
 			
@@ -70,8 +77,104 @@ namespace ICSharpCode.SharpDevelop.Parser
 			foreach (var parsedFile in projectContent.Files) {
 				SD.ParserService.RemoveOwnerProject(FileName.Create(parsedFile.FileName), project);
 			}
+			var pc = projectContent;
+			Task.Run(
+				delegate {
+					pc = pc.RemoveAssemblyReferences(pc.AssemblyReferences);
+					int serializableFileCount = 0;
+					List<IParsedFile> nonSerializableParsedFiles = new List<IParsedFile>();
+					foreach (var parsedFile in pc.Files) {
+						if (!parsedFile.GetType().IsSerializable || parsedFile.LastWriteTime == default(DateTime))
+							nonSerializableParsedFiles.Add(parsedFile);
+						else
+							serializableFileCount++;
+					}
+					// remove non-serializable parsed files
+					if (nonSerializableParsedFiles.Count > 0)
+						pc = pc.UpdateProjectContent(nonSerializableParsedFiles, null);
+					if (serializableFileCount > 3)
+						SaveToCache(cacheFileName, pc);
+					else
+						RemoveCache(cacheFileName);
+				}).FireAndForget();
+		}
+		
+		#region Caching logic (serialization)
+		
+		static string GetCacheFileName(FileName projectFileName)
+		{
+			string persistencePath = SD.AssemblyParserService.DomPersistencePath;
+			if (persistencePath == null)
+				return null;
+			string cacheFileName = Path.GetFileNameWithoutExtension(projectFileName);
+			if (cacheFileName.Length > 32)
+				cacheFileName = cacheFileName.Substring(cacheFileName.Length - 32); // use 32 last characters
+			cacheFileName = Path.Combine(persistencePath, cacheFileName + "." + projectFileName.GetHashCode().ToString("x8") + ".prj");
+			return cacheFileName;
+		}
+		
+		static IProjectContent TryReadFromCache(string cacheFileName)
+		{
+			if (cacheFileName == null || !File.Exists(cacheFileName))
+				return null;
+			LoggingService.Debug("Deserializing " + cacheFileName);
+			try {
+				using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
+					using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
+						FastSerializer s = new FastSerializer();
+						return (IProjectContent)s.Deserialize(reader);
+					}
+				}
+			} catch (IOException ex) {
+				LoggingService.Warn(ex);
+				return null;
+			} catch (UnauthorizedAccessException ex) {
+				LoggingService.Warn(ex);
+				return null;
+			} catch (SerializationException ex) {
+				LoggingService.Warn(ex);
+				return null;
+			}
 		}
 		
+		static void SaveToCache(string cacheFileName, IProjectContent pc)
+		{
+			if (cacheFileName == null)
+				return;
+			LoggingService.Debug("Serializing to " + cacheFileName);
+			try {
+				Directory.CreateDirectory(Path.GetDirectoryName(cacheFileName));
+				using (FileStream fs = new FileStream(cacheFileName, FileMode.Create, FileAccess.Write)) {
+					using (BinaryWriter writer = new BinaryWriterWith7BitEncodedInts(fs)) {
+						FastSerializer s = new FastSerializer();
+						s.Serialize(writer, pc);
+					}
+				}
+			} catch (IOException ex) {
+				LoggingService.Warn(ex);
+				// Can happen if two SD instances are trying to access the file at the same time.
+				// We'll just let one of them win, and instance that got the exception won't write to the cache at all.
+				// Similarly, we also ignore the other kinds of IO exceptions.
+			} catch (UnauthorizedAccessException ex) {
+				LoggingService.Warn(ex);
+			}
+		}
+		
+		void RemoveCache(string cacheFileName)
+		{
+			if (cacheFileName == null)
+				return;
+			try {
+				File.Delete(cacheFileName);
+			} catch (IOException ex) {
+				LoggingService.Warn(ex);
+			} catch (UnauthorizedAccessException ex) {
+				LoggingService.Warn(ex);
+			}
+		}
+		
+		#endregion
+		
 		public IProjectContent ProjectContent {
 			get {
 				lock (lockObj) {
@@ -120,6 +223,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 		
 		void ParseFiles(IReadOnlyList<FileName> filesToParse, IProgressMonitor progressMonitor)
 		{
+			IProjectContent cachedPC = TryReadFromCache(cacheFileName);
 			ParseableFileContentFinder finder = new ParseableFileContentFinder();
 			
 			object progressLock = new object();
@@ -131,9 +235,26 @@ namespace ICSharpCode.SharpDevelop.Parser
 					CancellationToken = progressMonitor.CancellationToken
 				},
 				fileName => {
-					ITextSource content = finder.Create(fileName);
-					if (content != null) {
-						SD.ParserService.ParseFile(fileName, content, project);
+					ITextSource content = finder.CreateForOpenFile(fileName);
+					bool wasLoadedFromCache = false;
+					if (content == null && cachedPC != null) {
+						IParsedFile parsedFile = cachedPC.GetFile(fileName);
+						if (parsedFile != null && parsedFile.LastWriteTime == File.GetLastWriteTimeUtc(fileName)) {
+							SD.ParserService.RegisterParsedFile(fileName, project, parsedFile);
+							wasLoadedFromCache = true;
+						}
+					}
+					if (!wasLoadedFromCache) {
+						if (content == null) {
+							try {
+								content = SD.FileService.GetFileContentFromDisk(fileName);
+							} catch (IOException) {
+							} catch (UnauthorizedAccessException) {
+							}
+						}
+						if (content != null) {
+							SD.ParserService.ParseFile(fileName, content, project);
+						}
 					}
 					lock (progressLock) {
 						progressMonitor.Progress += fileCountInverse;

src/Main/Base/Project/Src/Services/ProjectService/ParseableFileContentFinder.cs

@@ -19,17 +19,25 @@ namespace ICSharpCode.SharpDevelop.Project
 	{
 		FileName[] viewContentFileNamesCollection = SD.MainThread.InvokeIfRequired(() => SD.FileService.OpenedFiles.Select(f => f.FileName).ToArray());
 		
+		public ITextSource CreateForOpenFile(FileName fileName)
+		{
+			foreach (FileName name in viewContentFileNamesCollection) {
+				if (FileUtility.IsEqualFileName(name, fileName))
+					return SD.FileService.GetFileContentForOpenFile(fileName);
+			}
+			return null;
+		}
+		
 		/// <summary>
 		/// Retrieves the file contents for the specified project items.
 		/// </summary>
 		public ITextSource Create(FileName fileName)
 		{
-			foreach (FileName name in viewContentFileNamesCollection) {
-				if (FileUtility.IsEqualFileName(name, fileName))
-					return SD.FileService.GetFileContent(fileName);
-			}
+			ITextSource textSource = CreateForOpenFile(fileName);
+			if (textSource != null)
+				return textSource;
 			try {
-				return new StringTextSource(ICSharpCode.AvalonEdit.Utils.FileReader.ReadFileContent(fileName, SD.FileService.DefaultFileEncoding));
+				return SD.FileService.GetFileContentFromDisk(fileName);
 			} catch (IOException) {
 				return null;
 			} catch (UnauthorizedAccessException) {

src/Main/SharpDevelop/Parser/AssemblyParserService.cs

@@ -140,7 +140,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 			if (pc != null)
 				return pc;
 			
-			LoggingService.Debug("Loading " + fileName);
+			//LoggingService.Debug("Loading " + fileName);
 			cancellationToken.ThrowIfCancellationRequested();
 			var param = new ReaderParameters();
 			param.AssemblyResolver = new DummyAssemblyResolver();
@@ -246,16 +246,15 @@ namespace ICSharpCode.SharpDevelop.Parser
 		{
 			if (cacheFileName == null || !File.Exists(cacheFileName))
 				return null;
-			LoggingService.Debug("Deserializing " + cacheFileName);
+			//LoggingService.Debug("Deserializing " + cacheFileName);
 			try {
 				using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
 					using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
 						if (reader.ReadInt64() != lastWriteTime.Ticks) {
-							LoggingService.Debug("Timestamp mismatch, deserialization aborted.");
+							LoggingService.Debug("Timestamp mismatch, deserialization aborted. (" + cacheFileName + ")");
 							return null;
 						}
 						FastSerializer s = new FastSerializer();
-						s.SerializationBinder = new MySerializationBinder();
 						return (IUnresolvedAssembly)s.Deserialize(reader);
 					}
 				}
@@ -282,7 +281,6 @@ namespace ICSharpCode.SharpDevelop.Parser
 					using (BinaryWriter writer = new BinaryWriterWith7BitEncodedInts(fs)) {
 						writer.Write(lastWriteTime.Ticks);
 						FastSerializer s = new FastSerializer();
-						s.SerializationBinder = new MySerializationBinder();
 						s.Serialize(writer, pc);
 					}
 				}
@@ -295,33 +293,6 @@ namespace ICSharpCode.SharpDevelop.Parser
 				LoggingService.Warn(ex);
 			}
 		}
-		
-		sealed class MySerializationBinder : SerializationBinder
-		{
-			public override void BindToName(Type serializedType, out string assemblyName, out string typeName)
-			{
-				if (serializedType.Assembly == typeof(IProjectContent).Assembly) {
-					assemblyName = "NRefactory";
-				} else {
-					assemblyName = serializedType.Assembly.FullName;
-				}
-				typeName = serializedType.FullName;
-			}
-			
-			public override Type BindToType(string assemblyName, string typeName)
-			{
-				Assembly asm;
-				switch (assemblyName) {
-					case "NRefactory":
-						asm = typeof(IProjectContent).Assembly;
-						break;
-					default:
-						asm = Assembly.Load(assemblyName);
-						break;
-				}
-				return asm.GetType(typeName);
-			}
-		}
 		#endregion
 	}
 }

src/Main/SharpDevelop/Parser/ParserService.cs

@@ -360,5 +360,10 @@ namespace ICSharpCode.SharpDevelop.Parser
 		{
 			// TODO
 		}
+		
+		public void RegisterParsedFile(FileName fileName, IProject project, IParsedFile parsedFile)
+		{
+			GetFileEntry(fileName, true).RegisterParsedFile(project, parsedFile);
+		}
 	}
 }

src/Main/SharpDevelop/Parser/ParserServiceEntry.cs

@@ -221,6 +221,9 @@ namespace ICSharpCode.SharpDevelop.Parser
 						throw new NullReferenceException(parser.GetType().Name + ".Parse() returned null");
 					if (fullParseInformationRequested && !parseInfo.IsFullParseInformation)
 						throw new InvalidOperationException(parser.GetType().Name + ".Parse() did not return full parse info as requested.");
+					OnDiskTextSourceVersion onDiskVersion = fileContent.Version as OnDiskTextSourceVersion;
+					if (onDiskVersion != null)
+						parseInfo.ParsedFile.LastWriteTime = onDiskVersion.LastWriteTime;
 					FreezableHelper.Freeze(parseInfo.ParsedFile);
 					results[i] = new ParseInformationEventArgs(entries[i].Project, entries[i].ParsedFile, parseInfo);
 				}
@@ -326,5 +329,25 @@ namespace ICSharpCode.SharpDevelop.Parser
 			return task;
 		}
 		#endregion
+		
+		public void RegisterParsedFile(IProject project, IParsedFile parsedFile)
+		{
+			if (project == null)
+				throw new ArgumentNullException("project");
+			if (parsedFile == null)
+				throw new ArgumentNullException("parsedFile");
+			FreezableHelper.Freeze(parsedFile);
+			var newParseInfo = new ParseInformation(parsedFile, false);
+			lock (this) {
+				int index = FindIndexForProject(project);
+				if (index >= 0) {
+					currentVersion = null;
+					var args = new ParseInformationEventArgs(project, entries[index].ParsedFile, newParseInfo);
+					entries[index] = new ProjectEntry(project, parsedFile, null);
+					project.OnParseInformationUpdated(args);
+					parserService.RaiseParseInformationUpdated(args);
+				}
+			}
+		}
 	}
 }

src/Main/SharpDevelop/SharpDevelop.csproj

@@ -138,6 +138,8 @@
     </Compile>
   </ItemGroup>
   <ItemGroup>
+    <Content Include="ProfilingSessions\Session20120329_181957.sdps" />
+    <Content Include="ProfilingSessions\Session20120329_182016.sdps" />
     <ProjectReference Include="..\..\Libraries\AvalonDock\AvalonDock\AvalonDock.csproj">
       <Project>{2FF700C2-A38A-48BD-A637-8CAFD4FE6237}</Project>
       <Name>AvalonDock</Name>

src/Main/SharpDevelop/Workbench/FileService.cs

@@ -118,7 +118,10 @@ namespace ICSharpCode.SharpDevelop.Workbench
 		
 		public ITextSource GetFileContentFromDisk(FileName fileName, CancellationToken cancellationToken)
 		{
-			return new StringTextSource(FileReader.ReadFileContent(fileName, DefaultFileEncoding));
+			cancellationToken.ThrowIfCancellationRequested();
+			string text = FileReader.ReadFileContent(fileName, DefaultFileEncoding);
+			DateTime lastWriteTime = File.GetLastWriteTimeUtc(fileName);
+			return new StringTextSource(text, new OnDiskTextSourceVersion(lastWriteTime));
 		}
 		#endregion