add a scanner, but this seems to be a wrong solution. Change open-source head

StgSharp.RegularAnalysis/Text/RegexIR.Abstraction.cs

@@ -0,0 +1,75 @@
+// -----------------------------------------------------------------------------
+// file="RegexIR.Abstraction"
+// Project: StgSharp
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.RegularAnalysis.Text
+{
+    internal interface IRegexComplex
+    {
+
+        bool IsFullyOptimized { get; set; }
+
+        int CommandCount { get; set; }
+
+    }
+
+    internal interface IRegexSequence
+    {
+
+        string Pattern { get; }
+
+    }
+
+    internal interface IRegexCount
+    {
+
+        bool IsGreedy { get; }
+
+        bool IsStar { get; }
+
+        bool IsPlus { get; }
+
+        int Min { get; }
+
+        int Max { get; }
+
+    }
+
+    internal abstract class RegexIR
+    {
+
+        protected RegexIR(
+                  RegexIRCommand command
+        )
+        {
+            CommandMask = command;
+        }
+
+        public bool SingleLineResultRequired { get; set; }
+
+        public int SingleLineResultIndex { get; set; }
+
+        public RegexIRPrefix Prefix { get; set; }
+
+        internal RegexIRCommand CommandMask { get; init; }
+
+        internal string AsCommand(
+                        int lineNum
+        )
+        {
+            return $"[{lineNum}]\t{Prefix}\t{AsCommand()}";
+        }
+
+        protected abstract string AsCommand();
+
+    }
+}