From 2c17f6c108d7acd51a7806144568d435de7b6fb9 Mon Sep 17 00:00:00 2001
From: Youmu Liu <105042599+Nitload-NSI@users.noreply.github.com>
Date: Sun, 20 Sep 2026 18:29:44 +0800
Subject: [PATCH] start nfa afterall

---
 .../Abstraction/Mix.cs                        | 47 +++++++++++++++++++
 .../Abstraction/Relation.cs                   | 47 +++++++++++++++++++
 .../AttributeRegex/PropertyMatchEngine.cs     | 12 +++++
 3 files changed, 106 insertions(+)
 create mode 100644 src/Nitload.RegularAnalysis/Abstraction/Mix.cs
 create mode 100644 src/Nitload.RegularAnalysis/Abstraction/Relation.cs
 create mode 100644 src/Nitload.RegularAnalysis/AttributeRegex/PropertyMatchEngine.cs

diff --git a/src/Nitload.RegularAnalysis/Abstraction/Mix.cs b/src/Nitload.RegularAnalysis/Abstraction/Mix.cs
new file mode 100644
index 00000000..df1ab372
--- /dev/null
+++ b/src/Nitload.RegularAnalysis/Abstraction/Mix.cs
@@ -0,0 +1,47 @@
+// -----------------------------------------------------------------------------
+// file="Mix"
+// 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 Nitload.RegularAnalysis.Abstraction
+{
+    public class Mix<TElement, TValue, TEvaluator>(
+                 TEvaluator evaluator
+    ) where TEvaluator : IMixEvaluator<TElement, TValue>
+    {
+
+        public TValue Weight { get; private set; } = default!;
+
+        private TEvaluator Evaluator { get; init; } = evaluator;
+
+        public TValue Evaluate(
+                      Span<Relation<TElement, TValue>> relations
+        )
+        {
+            Weight = Evaluator.Evaluate(relations);
+            return Weight;
+        }
+
+    }
+
+    public sealed class Mix<TElement, TValue>(
+                        IMixEvaluator<TElement, TValue> evaluator
+    ) : Mix<TElement, TValue, IMixEvaluator<TElement, TValue>>(evaluator) { }
+
+    public interface IMixEvaluator<TElement, TValue>
+    {
+
+        TValue Evaluate(
+               Span<Relation<TElement, TValue>> relations
+        );
+
+    }
+}
diff --git a/src/Nitload.RegularAnalysis/Abstraction/Relation.cs b/src/Nitload.RegularAnalysis/Abstraction/Relation.cs
new file mode 100644
index 00000000..5ffe0a8b
--- /dev/null
+++ b/src/Nitload.RegularAnalysis/Abstraction/Relation.cs
@@ -0,0 +1,47 @@
+// -----------------------------------------------------------------------------
+// file="Relation"
+// 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 Nitload.RegularAnalysis.Abstraction
+{
+    public class Relation<TElement, TValue, TEvaluator>(
+                 TEvaluator evaluator
+    ) where TEvaluator : IRelationEvaluator<TElement, TValue>
+    {
+
+        public TEvaluator Evaluator { get; init; } = evaluator;
+
+        public TValue Weight { get; private set; } = default!;
+
+        public TValue Evaluate(
+                      ReadOnlySpan<TElement> sequence
+        )
+        {
+            Weight = Evaluate(sequence);
+            return Weight;
+        }
+
+    }
+
+    public class Relation<TElement, TValue>(
+                 IRelationEvaluator<TElement, TValue> evaluator
+    ) : Relation<TElement, TValue, IRelationEvaluator<TElement, TValue>>(evaluator) { }
+
+    public interface IRelationEvaluator<TElement, TValue>
+    {
+
+        TValue Evaluate(
+               ReadOnlySpan<TElement> sequence
+        );
+
+    }
+}
diff --git a/src/Nitload.RegularAnalysis/AttributeRegex/PropertyMatchEngine.cs b/src/Nitload.RegularAnalysis/AttributeRegex/PropertyMatchEngine.cs
new file mode 100644
index 00000000..fe45b589
--- /dev/null
+++ b/src/Nitload.RegularAnalysis/AttributeRegex/PropertyMatchEngine.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Nitload.RegularAnalysis.AttibuteRegex
+{
+    internal class PropertyMatchEngine
+    {
+    }
+}