mainly theoratical work on semi, add regex sample

test/SingleFile/regex.cs

@@ -122,3 +122,47 @@ static void Match_AB_2_3(ReadOnlySpan<char> input)
 
     } while(false);
 }
+
+// (ab|[cd]|.)x
+static void MatchDiffCase(ReadOnlySpan<char> seq)
+{
+    /*
+     * [000] 0001, DEF , Sccs, NONE, 0000, MATCH_SEQ "ab"
+     * [001] 0001, Fail, Sccs, LINE, 0000, MATCH_SET "[cd]"
+     * [002] 0001, Fail, Sccs, LINE, 0001, MATCH_SET "."
+     * [003] 0000, Fail, DEF , LINE, 0002, POP FAIL
+     * [004] 0000, DEF , DEF , NONE, 0000, MATCH_SEQ "x"
+    */
+    
+    int ptr = 0;
+    if(seq.StartsWith("ab"))
+    {
+        ptr+=2;
+    }
+    else if((seq[0] == 'c' || seq[0] == 'd'))
+    {
+        ptr+=1;
+    }
+    else if(true)
+    {
+        ptr+=1;
+    }
+    else
+    {
+        return;
+    }
+}
+
+// (?<name>.*)x
+static void MatchCountAnyGroup(ReadOnlySpan<char> seq)
+{
+    /*
+     * [000] 0001, DEF , DEF , NONE, 0000, FIND_COMPLEX FURTHEST COUNT: -1
+     * [001] 0001, Sccs, DEF , LINE, 0000, PACK SUCCESS GROUP: "name"
+     * [002] 0000, DEF , DEF , NONE, 0000, MATCH_SEQ "234"
+    */
+
+    int ptr = 0;
+    
+    
+}

test/StgSharpDebug/TestRegexAnalyse.cs

@@ -21,7 +21,7 @@ namespace StgSharp
     {
 
         private static string[] regexSource = [
-            @"(?<name>123)(?<name>123)",
+            @"(?<name>.*)234",
             /*
             @"http|https|ftp|ftps",
             @"abc[0-9]x|abc[0-9]y|abd[0-9]x|abd[0-9]y|xyz",