add state nodes for regex state machine

2026-01-27 18:40:44 +08:00
parent a36e6cbab4
commit 3881078770
13 changed files with 510 additions and 820 deletions
@@ -0,0 +1,78 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="RegularExpression.Node.Count"
+// Project: StgSharp
+// 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
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.RegularAnalysis
+{
+    public partial class RegularExpression
+    {
+
+        private class RegularExpressionCounterNode : RegularExpressionStateNode
+        {
+
+            private readonly int _maxCount;
+            private readonly int _minCount;
+
+            public RegularExpressionCounterNode(
+                   int minCount,
+                   bool isEager
+            )
+            {
+                _minCount = minCount;
+                IsEager = isEager;
+            }
+
+            public bool IsEager { get; init; }
+
+            public int Count { get; private set; }
+
+            public override NodeState Type => NodeState.COUNT;
+
+            public RegularExpressionStateNode LoopBack { get; set; }
+
+            public override bool IsValidateFrom(
+                                 RegularExpressionStateNode former,
+                                 RegularExpressionStateContext context
+            )
+            {
+                return true;
+            }
+
+            public void Reset()
+            {
+                Count = 0;
+            }
+
+        }
+
+    }
+}