added missing documentation comments to new Snippet classes

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Snippets/InsertionContext.cs

@@ -92,6 +92,9 @@ namespace ICSharpCode.AvalonEdit.Snippets
 		AnchorSegment wholeSnippetAnchor;
 		bool deactivateIfSnippetEmpty;
 		
+		/// <summary>
+		/// Gets the start position of the snippet insertion.
+		/// </summary>
 		public int StartPosition {
 			get {
 				if (wholeSnippetAnchor != null)

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Snippets/SnippetAnchorElement.cs

@@ -10,17 +10,25 @@ using ICSharpCode.AvalonEdit.Document;
 
 namespace ICSharpCode.AvalonEdit.Snippets
 {
+	/// <summary>
+	/// Creates a named anchor that can be accessed by other SnippetElements.
+	/// </summary>
 	public sealed class SnippetAnchorElement : SnippetElement
 	{
-		string textToInsert = "";
-		
+		/// <summary>
+		/// Gets or sets the name of the anchor.
+		/// </summary>
 		public string Name { get; private set; }
 		
+		/// <summary>
+		/// Creates a SnippetAnchorElement with the supplied name.
+		/// </summary>
 		public SnippetAnchorElement(string name)
 		{
 			this.Name = name;
 		}
 		
+		/// <inheritdoc />
 		public override void Insert(InsertionContext context)
 		{
 			int start = context.InsertionPosition;
@@ -29,8 +37,12 @@ namespace ICSharpCode.AvalonEdit.Snippets
 		}
 	}
 	
+	/// <summary>
+	/// AnchorElement created by SnippetAnchorElement.
+	/// </summary>
 	public sealed class AnchorElement : IActiveElement
 	{
+		/// <inheritdoc />
 		public bool IsEditable {
 			get { return false; }
 		}
@@ -38,10 +50,14 @@ namespace ICSharpCode.AvalonEdit.Snippets
 		AnchorSegment segment;
 		InsertionContext context;
 		
+		/// <inheritdoc />
 		public ISegment Segment {
 			get { return segment; }
 		}
 		
+		/// <summary>
+		/// Creates a new AnchorElement.
+		/// </summary>
 		public AnchorElement(AnchorSegment segment, string text, string name, InsertionContext context)
 		{
 			this.segment = segment;
@@ -50,6 +66,9 @@ namespace ICSharpCode.AvalonEdit.Snippets
 			this.Name = name;
 		}
 		
+		/// <summary>
+		/// Gets or sets the text at the anchor.
+		/// </summary>
 		public string Text {
 			get { return context.Document.GetText(segment); }
 			set {
@@ -63,12 +82,17 @@ namespace ICSharpCode.AvalonEdit.Snippets
 			}
 		}
 		
+		/// <summary>
+		/// Gets or sets the name of the anchor.
+		/// </summary>
 		public string Name { get; private set; }
 		
+		/// <inheritdoc />
 		public void OnInsertionCompleted()
 		{
 		}
 		
+		/// <inheritdoc />
 		public void Deactivate(SnippetEventArgs e)
 		{
 		}