Added indentation support to the logging.

src/Core/Diagnostics.cs

@@ -1,4 +1,7 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
 
 namespace CppSharp
 {
@@ -41,6 +44,8 @@ namespace CppSharp
     public interface IDiagnosticConsumer
     {
         void Emit(DiagnosticInfo info);
+        void PushIndent(int level);
+        void PopIndent();
     }
 
     public static class DiagnosticExtensions
@@ -139,14 +144,33 @@ namespace CppSharp
     public class TextDiagnosticPrinter : IDiagnosticConsumer
     {
         public bool Verbose;
+        public Stack<int> Indents;
+
+        public TextDiagnosticPrinter()
+        {
+            Indents = new Stack<int>();
+        }
 
         public void Emit(DiagnosticInfo info)
         {
             if (info.Kind == DiagnosticKind.Debug && !Verbose)
                 return;
 
-            Console.WriteLine(info.Message);
-            System.Diagnostics.Debug.WriteLine(info.Message);
+            var currentIndent = Indents.Sum();
+            var message = new string(' ', currentIndent) + info.Message;
+
+            Console.WriteLine(message);
+            Debug.WriteLine(message);
+        }
+
+        public void PushIndent(int level)
+        {
+            Indents.Push(level);
+        }
+
+        public void PopIndent()
+        {
+            Indents.Pop();
         }
     }
 }

src/Generator/Driver.cs

@@ -236,7 +236,10 @@ namespace CppSharp
             TranslationUnitPasses.RunPasses(pass =>
                 {
                     Diagnostics.Debug("Pass '{0}'", pass);
+
+                    Diagnostics.PushIndent(4);
                     pass.VisitLibrary(ASTContext);
+                    Diagnostics.PopIndent();
                 });
             Generator.Process();
         }