Clean up all code

Source/GrasscutterTools/Utils/SparseSet.cs

@@ -1,44 +1,65 @@
-using System;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2023 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ **/
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace GrasscutterTools.Utils
 {
-    public class SparseSet
+    internal class SparseSet
     {
-        private struct Range
+        private readonly struct Range
         {
-            public int Min;
-            public int Max;
+            private readonly int Min;
+            private readonly int Max;
 
             public Range(int min, int max)
             {
                 Min = min;
                 Max = max;
             }
+
             public bool Check(int value) =>
                 Min <= value && value <= Max;
         }
 
-        private readonly List<Range> rangeEntries;
-        private readonly HashSet<int> denseEntries;
+        private readonly List<Range> RangeEntries;
+        private readonly HashSet<int> DenseEntries;
+
         public SparseSet(string csv)
         {
-            rangeEntries = new List<Range>();
-            denseEntries = new HashSet<int>();
+            RangeEntries = new List<Range>();
+            DenseEntries = new HashSet<int>();
             foreach (var token in csv.Replace("\n", "").Replace(" ", "").Split(','))
             {
                 var tokens = token.Split('-');
                 switch (tokens.Length)
                 {
                     case 1:
-                        denseEntries.Add(int.Parse(tokens[0]));
+                        DenseEntries.Add(int.Parse(tokens[0]));
                         break;
+
                     case 2:
-                        rangeEntries.Add(new Range(int.Parse(tokens[0]), int.Parse(tokens[1])));
+                        RangeEntries.Add(new Range(int.Parse(tokens[0]), int.Parse(tokens[1])));
                         break;
+
                     default:
                         throw new ArgumentException($"Invalid token passed to SparseSet initializer - {token} (split length {tokens.Length})");
                 }
@@ -47,10 +68,7 @@ namespace GrasscutterTools.Utils
 
         public bool Contains(int i)
         {
-            foreach (var range in rangeEntries)
-                if (range.Check(i))
-                    return true;
-            return denseEntries.Contains(i);
+            return RangeEntries.Any(range => range.Check(i)) || DenseEntries.Contains(i);
         }
     }
-}
+}