fix errors in interpreter. add a enumerator for tree. working on tree optimizer

StgSharpDebug/TestRegexAnalyse.cs

@@ -1,9 +1,9 @@
-//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
 // -----------------------------------------------------------------------
 // file="TestRegexAnalyse"
 // Project: StgSharp
-// AuthorGroup: Nitload Space
-// Copyright (c) Nitload Space. All rights reserved.
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. All rights reserved.
 //     
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
@@ -38,11 +38,17 @@ namespace StgSharp
     public class TestRegexAnalyse
     {
 
-        private const string regex = @"abc(?<name>abc)";
+        private const string regex = @"ab[1-9]+(?<name>abc)";
 
         public static void Run()
         {
             RegexInterpreter interpreter = RegexInterpreter.Analyze(regex);
+            AbstractSyntaxTree<RegexAstNode, RegexElementLabel> tree = interpreter.Tree;
+            Console.WriteLine();
+            Console.WriteLine();
+            foreach (RegexAstNode node in tree) {
+                Console.WriteLine($"{node.Source.Value}\t{node.Source.Flag}");
+            }
         }
 
     }