daily update on 20250214 by nitload youmu, building syntax analysor, tough！

内核源代码/StgSharp.Script/Express/Element/ExpConst.cs

@@ -30,13 +30,15 @@
 //-----------------------------------------------------------------------
 using System;
 using System.Collections;
+using System.Collections.Frozen;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Runtime.CompilerServices;
 using System.Text;
 
 namespace StgSharp.Script.Express
 {
-    public class ExpConstantCollectionSource : IExpImmutableElement
+    public sealed class ExpConstantCollectionSource : ExpImmutableElementBase
     {
 
         private Dictionary<string, ExpElementInstanceBase> _constants;
@@ -50,23 +52,23 @@ namespace StgSharp.Script.Express
                 ExpCompile.Multiplexer );
         }
 
-        public static Dictionary<string, ExpElementInstanceBase> BuiltinConst => ExpCompile.BuiltinConst;
+        public override ExpElementType ElementType => ExpElementType.Const;
 
-        public ExpElementType ElementType => ExpElementType.Const;
+        public static FrozenDictionary<string, ExpElementInstanceBase> BuiltinConst => ExpCompile.BuiltinConst;
 
-        public IScriptSourceProvider SourceProvider => _sourceProvider;
+        public override IScriptSourceProvider SourceProvider => _sourceProvider;
 
-        public string Name
+        public override string Name
         {
             get => ExpCompile.KeyWord.Constant;
         }
 
-        public virtual void Analyse()
+        public override void Analyse()
         {
             throw new NotImplementedException();
         }
 
-        public ExpToken MakeReference( params object[] options )
+        public override ExpToken MakeReference( params object[] options )
         {
             if( options.Length == 0 || options[ 0 ] is not string str ) {
                 return null!;