Make IParsedFile.LastWriteTime nullable.

Replace IAXmlVisitor interface with AXmlVisitor abstract base class.

ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssue.cs

@@ -1,6 +1,6 @@
-// 
+// 
 // InspectionIssue.cs
-//  
+//
 // Author:
 //       Mike Krüger <mkrueger@xamarin.com>
 // 
@@ -46,17 +46,20 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			private set;
 		}
 
-		public IEnumerable<CodeAction> Actions {
+		public IList<CodeAction> Actions {
 			get;
 			private set;
 		}
 
-		public CodeIssue(string description, TextLocation start, TextLocation end, IEnumerable<CodeAction> action = null)
+		public CodeIssue(string description, TextLocation start, TextLocation end, IEnumerable<CodeAction> actions = null)
 		{
 			Desription = description;
 			Start = start;
 			End = end;
-			Actions = action ?? Enumerable.Empty<CodeAction> ();
+			if (actions != null)
+				Actions = actions.ToArray();
+			else
+				Actions = EmptyList<CodeAction>.Instance;
 		}
 		
 		public CodeIssue(string description, TextLocation start, TextLocation end, CodeAction action) : this (description, start, end, action != null ? new [] { action } : null)

ICSharpCode.NRefactory.CSharp/Refactoring/DocumentScript.cs

@@ -46,6 +46,7 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			this.originalDocument = document.CreateDocumentSnapshot();
 			this.currentDocument = document;
 			this.options = options;
+			this.eolMarker = options.EolMarker;
 			Debug.Assert(currentDocument.Version.CompareAge(originalDocument.Version) == 0);
 			this.undoGroup = document.OpenUndoGroup();
 		}

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);

ICSharpCode.NRefactory.Xml/AXmlAttribute.cs

@@ -104,7 +104,7 @@ namespace ICSharpCode.NRefactory.Xml
 		}
 		
 		/// <inheritdoc/>
-		public override void AcceptVisitor(IAXmlVisitor visitor)
+		public override void AcceptVisitor(AXmlVisitor visitor)
 		{
 			visitor.VisitAttribute(this);
 		}

ICSharpCode.NRefactory.Xml/AXmlDocument.cs

@@ -45,7 +45,7 @@ namespace ICSharpCode.NRefactory.Xml
 		}
 		
 		/// <inheritdoc/>
-		public override void AcceptVisitor(IAXmlVisitor visitor)
+		public override void AcceptVisitor(AXmlVisitor visitor)
 		{
 			visitor.VisitDocument(this);
 		}
@@ -55,5 +55,10 @@ namespace ICSharpCode.NRefactory.Xml
 		{
 			return string.Format(CultureInfo.InvariantCulture, "[{0} Chld:{1}]", base.ToString(), this.Children.Count);
 		}
+		
+		/// <summary>
+		/// Represents an empty document.
+		/// </summary>
+		public readonly static AXmlDocument Empty = new AXmlDocument(null, 0, new InternalDocument());
 	}
 }

ICSharpCode.NRefactory.Xml/AXmlElement.cs

@@ -164,7 +164,7 @@ namespace ICSharpCode.NRefactory.Xml
 		}
 		
 		/// <inheritdoc/>
-		public override void AcceptVisitor(IAXmlVisitor visitor)
+		public override void AcceptVisitor(AXmlVisitor visitor)
 		{
 			visitor.VisitElement(this);
 		}

ICSharpCode.NRefactory.Xml/AXmlObject.cs

@@ -179,7 +179,7 @@ namespace ICSharpCode.NRefactory.Xml
 		#endregion
 		
 		/// <summary> Call appropriate visit method on the given visitor </summary>
-		public abstract void AcceptVisitor(IAXmlVisitor visitor);
+		public abstract void AcceptVisitor(AXmlVisitor visitor);
 		
 		/// <summary>
 		/// Gets the start offset of the segment.

ICSharpCode.NRefactory.Xml/AXmlTag.cs

@@ -84,7 +84,7 @@ namespace ICSharpCode.NRefactory.Xml
 		public bool IsUnknownBang           { get { return internalObject.IsUnknownBang; } }
 		
 		/// <inheritdoc/>
-		public override void AcceptVisitor(IAXmlVisitor visitor)
+		public override void AcceptVisitor(AXmlVisitor visitor)
 		{
 			visitor.VisitTag(this);
 		}

ICSharpCode.NRefactory.Xml/AXmlText.cs

@@ -49,7 +49,7 @@ namespace ICSharpCode.NRefactory.Xml
 		}
 		
 		/// <inheritdoc/>
-		public override void AcceptVisitor(IAXmlVisitor visitor)
+		public override void AcceptVisitor(AXmlVisitor visitor)
 		{
 			visitor.VisitText(this);
 		}

ICSharpCode.NRefactory.Xml/AXmlVisitor.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
 // 
 // Permission is hereby granted, free of charge, to any person obtaining a copy of this
 // software and associated documentation files (the "Software"), to deal in the Software
@@ -17,27 +17,46 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Text;
 
 namespace ICSharpCode.NRefactory.Xml
 {
 	/// <summary>
-	/// Visitor for the XML tree
+	/// Derive from this class to create visitor for the XML tree
 	/// </summary>
-	public interface IAXmlVisitor
+	public abstract class AXmlVisitor
 	{
-		/// <summary> Visit document </summary>
-		void VisitDocument(AXmlDocument document);
+		/// <summary> Visit AXmlDocument </summary>
+		public virtual void VisitDocument(AXmlDocument document)
+		{
+			foreach (AXmlObject child in document.Children)
+				child.AcceptVisitor(this);
+		}
 		
-		/// <summary> Visit tag </summary>
-		void VisitTag(AXmlTag tag);
+		/// <summary> Visit AXmlElement </summary>
+		public virtual void VisitElement(AXmlElement element)
+		{
+			foreach (AXmlObject child in element.Children)
+				child.AcceptVisitor(this);
+		}
 		
-		/// <summary> Visit attribute </summary>
-		void VisitAttribute(AXmlAttribute attribute);
+		/// <summary> Visit AXmlTag </summary>
+		public virtual void VisitTag(AXmlTag tag)
+		{
+			foreach (AXmlObject child in tag.Children)
+				child.AcceptVisitor(this);
+		}
 		
-		/// <summary> Visit text </summary>
-		void VisitText(AXmlText text);
+		/// <summary> Visit AXmlAttribute </summary>
+		public virtual void VisitAttribute(AXmlAttribute attribute)
+		{
+			
+		}
 		
-		/// <summary> Visit element </summary>
-		void VisitElement(AXmlElement element);
+		/// <summary> Visit AXmlText </summary>
+		public virtual void VisitText(AXmlText text)
+		{
+			
+		}
 	}
-}
+}

ICSharpCode.NRefactory.Xml/ICSharpCode.NRefactory.Xml.csproj

@@ -68,8 +68,8 @@
     <Compile Include="AXmlReader.cs" />
     <Compile Include="AXmlTag.cs" />
     <Compile Include="AXmlText.cs" />
+    <Compile Include="AXmlVisitor.cs" />
     <Compile Include="DocumentationElement.cs" />
-    <Compile Include="IAXmlVisitor.cs" />
     <Compile Include="IncrementalParserState.cs" />
     <Compile Include="InternalDocument.cs" />
     <Compile Include="ObjectIterator.cs" />

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.