add state nodes for regex state machine

StgSharp.Common/State/ISimpleStateMachine.cs

@@ -2,8 +2,8 @@
 // -----------------------------------------------------------------------
 // file="ISimpleStateMachine"
 // 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
@@ -35,13 +35,13 @@ using System.Threading.Tasks;
 namespace StgSharp.State
 {
     public interface ISimpleStateMachine<TStateNode, TStateLabel, TStateContext>
-        where TStateNode : ISimpleStateMachineNode<TStateLabel, TStateContext>
+        where TStateNode : SimpleStateMachineNode<TStateNode, TStateLabel, TStateContext>
         where TStateLabel : unmanaged, IEquatable<TStateLabel>
         where TStateContext : StateContext
     {
 
-        ref readonly TStateNode this[
-                                TStateLabel label
+        TStateNode this[
+                   TStateLabel label
         ] { get; }
 
         ref readonly TStateNode GetCurrentStateNode();

StgSharp.Common/State/SimpleStateMachineNode.cs

@@ -1,6 +1,6 @@
 //-----------------------------------------------------------------------
 // -----------------------------------------------------------------------
-// file="ISimpleStateMachineNode"
+// file="SimpleStateMachineNode"
 // Project: StgSharp
 // AuthorGroup: Nitload
 // Copyright (c) Nitload. All rights reserved.
@@ -29,24 +29,29 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Numerics;
+using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace StgSharp.State
 {
-    public abstract class SimpleStateMachineNode<TLabel, TStateContext>
+    public abstract class SimpleStateMachineNode<TSelf, TLabel, TStateContext>
+        where TSelf : SimpleStateMachineNode<TSelf, TLabel, TStateContext>
         where TLabel : unmanaged, IEquatable<TLabel>
         where TStateContext : StateContext
     {
 
-        private List<Func<SimpleStateMachineNode<TLabel, TStateContext>, SimpleStateMachineNode<TLabel, TStateContext>, TStateContext, bool>>
-                _jumpRule;
-        private List<(int, SimpleStateMachineNode<TLabel, TStateContext>)> _jumpTable;
+        private readonly List<int> _jumpTable = [];
 
-        public IReadOnlyCollection<(int, SimpleStateMachineNode<TLabel, TStateContext>)>
-                AvailableNodes => _jumpTable;
+        public ReadOnlySpan<int> AvailableNodes => CollectionsMarshal.AsSpan(_jumpTable);
+
+        public abstract bool IsValidateFrom(
+                             TSelf former,
+                             TStateContext context
+        );
 
         public abstract bool TryTransaction(
+                             ReadOnlySpan<TSelf> nodeSpan,
                              TStateContext context,
                              out TLabel label
         );