add COUNT and CONCAT ir emitter

StgSharp.RegularAnalysis/TextRegex/RegexIR.cs

@@ -28,6 +28,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -36,12 +37,16 @@ namespace StgSharp.RegularAnalysis.TextRegex
     internal enum RegexIRCommand
     {
 
-        Search = 0,
-        Jump = 1,
-        Condition = 2,
-        Count = 3,
-        Try = 4,
-        Pop = 5,
+        Search_Seq = 0,
+        Search_Set = 1,
+        SearchChar = 2,
+        Jump = 3,
+        Condition = 4,
+        Try = 5,
+        Pop = 6,
+        Count = 7,
+        Count_Seq = 8,
+        Count_Set = 9
 
     }
 
@@ -50,28 +55,6 @@ namespace StgSharp.RegularAnalysis.TextRegex
 
         internal abstract RegexIRCommand Command { get; }
 
-        public static RegexIR Condition(
-                              int success,
-                              int fail
-        )
-        {
-            return new RegexConditionIR(success, fail);
-        }
-
-        public static RegexIR PopLevel(
-                              bool isSuccess
-        )
-        {
-            return new RegexPopIR(isSuccess);
-        }
-
-        public static RegexIR Try(
-                              int count
-        )
-        {
-            return new RegexTryIR(count);
-        }
-
         internal abstract void Execute();
 
     }
@@ -95,14 +78,14 @@ namespace StgSharp.RegularAnalysis.TextRegex
     /// <summary>
     ///   Searches for a certain string pattern or charset from current position.
     /// </summary>
-    internal sealed class RegexSearchStringIR(
+    internal sealed class RegexSearchSeqIR(
                           string pattern
     ) : RegexIR
     {
 
         public string Pattern { get; } = pattern;
 
-        internal override RegexIRCommand Command => RegexIRCommand.Search;
+        internal override RegexIRCommand Command => RegexIRCommand.Search_Seq;
 
         internal override void Execute()
         {
@@ -111,30 +94,14 @@ namespace StgSharp.RegularAnalysis.TextRegex
 
     }
 
-    internal sealed class RegexSearchCharsetIR(
+    internal sealed class RegexMatchSetIR(
                           string charset
     ) : RegexIR
     {
 
         public string Charset { get; } = charset;
 
-        internal override RegexIRCommand Command => RegexIRCommand.Search;
-
-        internal override void Execute()
-        {
-            throw new NotImplementedException();
-        }
-
-    }
-
-    internal sealed class RegexSearchCharSetIR(
-                          string c
-    ) : RegexIR
-    {
-
-        public string Target { get; } = c;
-
-        internal override RegexIRCommand Command => RegexIRCommand.Search;
+        internal override RegexIRCommand Command => RegexIRCommand.Search_Set;
 
         internal override void Execute()
         {
@@ -200,7 +167,57 @@ namespace StgSharp.RegularAnalysis.TextRegex
 
         public int OperationIndex { get; } = operation;
 
-        internal override RegexIRCommand Command => throw new NotImplementedException();
+        internal override RegexIRCommand Command { get; } = RegexIRCommand.Count;
+
+        internal override void Execute()
+        {
+            throw new NotImplementedException();
+        }
+
+    }
+
+    internal sealed class RegexCountSeqIR(
+                          int min,
+                          int max,
+                          bool isGreedy,
+                          string seq
+    ) : RegexIR
+    {
+
+        public bool IsGreedy { get; } = isGreedy;
+
+        public int Min { get; } = min;
+
+        public int Max { get; } = max;
+
+        public string Sequence { get; } = seq;
+
+        internal override RegexIRCommand Command { get; } = RegexIRCommand.Count_Seq;
+
+        internal override void Execute()
+        {
+            throw new NotImplementedException();
+        }
+
+    }
+
+    internal sealed class RegexCountSetIR(
+                          int min,
+                          int max,
+                          bool isGreedy,
+                          string set
+    ) : RegexIR
+    {
+
+        public bool IsGreedy { get; } = isGreedy;
+
+        public int Min { get; } = min;
+
+        public int Max { get; } = max;
+
+        public string CharSet { get; } = set;
+
+        internal override RegexIRCommand Command => RegexIRCommand.Count_Set;
 
         internal override void Execute()
         {