create a new TextOutputLocation class for storing the location in the output text instead of Tuple<int, int>

ICSharpCode.Decompiler/Ast/TextOutputFormatter.cs

@@ -163,7 +163,7 @@ namespace ICSharpCode.Decompiler.Ast
 						foreach (var range in ranges) {
 							mapping.MemberCodeMappings.Add(new SourceCodeMapping {
 							                               	ILInstructionOffset = range,
-							                               	SourceCodeLine = output.CurrentLine,
+							                               	SourceCodeLine = output.Location.Line,
 							                               	MemberMapping = mapping
 							                               });
 						}
@@ -176,10 +176,10 @@ namespace ICSharpCode.Decompiler.Ast
 			
 			if (predicate(node)) {
 				var n = node as AttributedNode;
-				int c = 0;
+				int attributesCount = 0;
 				if (n != null)
-					c = n.Attributes.Count;
-				node.AddAnnotation(Tuple.Create(output.CurrentLine + c, output.CurrentColumn));
+					attributesCount = n.Attributes.Count;
+				node.AddAnnotation(new TextOutputLocation { Line = output.Location.Line + attributesCount, Column = output.Location.Column});
 			}
 			
 			nodeStack.Push(node);

ICSharpCode.Decompiler/Disassembler/MethodBodyDisassembler.cs

@@ -91,7 +91,7 @@ namespace ICSharpCode.Decompiler.Disassembler
 						// add IL code mappings - used in debugger
 						methodMapping.MemberCodeMappings.Add(
 							new SourceCodeMapping() {
-								SourceCodeLine = output.CurrentLine,
+								SourceCodeLine = output.Location.Line,
 								ILInstructionOffset = new ILRange { From = inst.Offset, To = inst.Next == null ? method.Body.CodeSize : inst.Next.Offset },
 								MemberMapping = methodMapping
 							});
@@ -194,7 +194,7 @@ namespace ICSharpCode.Decompiler.Disassembler
 					if (currentMethodMapping != null) {
 						currentMethodMapping.MemberCodeMappings.Add(
 							new SourceCodeMapping() {
-								SourceCodeLine = output.CurrentLine,
+								SourceCodeLine = output.Location.Line,
 								ILInstructionOffset = new ILRange { From = inst.Offset, To = inst.Next == null ? codeSize : inst.Next.Offset },
 								MemberMapping = currentMethodMapping
 							});

ICSharpCode.Decompiler/ITextOutput.cs

@@ -23,8 +23,7 @@ namespace ICSharpCode.Decompiler
 {
 	public interface ITextOutput
 	{
-		int CurrentLine { get; }
-		int CurrentColumn { get; }
+		TextOutputLocation Location { get; }
 		
 		void Indent();
 		void Unindent();
@@ -38,6 +37,12 @@ namespace ICSharpCode.Decompiler
 		void MarkFoldEnd();
 	}
 	
+	public sealed class TextOutputLocation
+	{
+		public int Line { get; set; }
+		public int Column { get; set; }
+	}
+	
 	public static class TextOutputExtensions
 	{
 		public static void Write(this ITextOutput output, string format, params object[] args)

ICSharpCode.Decompiler/PlainTextOutput.cs

@@ -28,8 +28,7 @@ namespace ICSharpCode.Decompiler
 		readonly TextWriter writer;
 		int indent;
 		bool needsIndent;
-		int lineNumber = 1;
-		int columnNumber = 1;
+		TextOutputLocation location = new TextOutputLocation { Line = 1, Column = 1};
 		
 		public PlainTextOutput(TextWriter writer)
 		{
@@ -43,12 +42,8 @@ namespace ICSharpCode.Decompiler
 			this.writer = new StringWriter();
 		}
 		
-		public int CurrentLine {
-			get { return lineNumber; }
-		}
-		
-		public int CurrentColumn { 
-			get { return columnNumber; }
+		public TextOutputLocation Location { 
+			get { return location; }
 		}
 		
 		public override string ToString()
@@ -72,7 +67,7 @@ namespace ICSharpCode.Decompiler
 				needsIndent = false;
 				for (int i = 0; i < indent; i++) {
 					writer.Write('\t');
-					columnNumber += TAB_SIZE - 1;
+					location.Column += TAB_SIZE - 1;
 				}
 			}
 		}
@@ -81,22 +76,22 @@ namespace ICSharpCode.Decompiler
 		{
 			WriteIndent();
 			writer.Write(ch);
-			columnNumber++;
+			location.Column++;
 		}
 		
 		public void Write(string text)
 		{
 			WriteIndent();
 			writer.Write(text);
-			columnNumber += text.Length;
+			location.Column += text.Length;
 		}
 		
 		public void WriteLine()
 		{
-			lineNumber++;
+			location.Line++;
 			writer.WriteLine();
 			needsIndent = true;
-			columnNumber = TAB_SIZE * indent;
+			location.Column = TAB_SIZE * indent;
 		}
 		
 		public void WriteDefinition(string text, object definition)