refact: 合乎代码规范

Canon.Core/LexicalParser/Lexer.cs

@@ -1,62 +1,60 @@
-
+namespace Canon.Core.LexicalParser;
 
-namespace Canon.Core.LexicalParser
-{
 public class Lexer
 {
-        private readonly LinkedList<char> source;
+    private readonly LinkedList<char> _source;
-        private LinkedListNode<char>? currentNode;
+    private LinkedListNode<char>? _currentNode;
-        private uint line = 1;
+    private uint _line = 1;
-        private uint charPosition = 0;
+    private uint _charPosition;
-        private List<SemanticToken> tokens = new List<SemanticToken>();
+    private readonly List<SemanticToken> _tokens = [];
 
     public Lexer(string source)
     {
         // 将字符串转换为LinkedList<char>
-            this.source = new LinkedList<char>(source);
+        _source = new LinkedList<char>(source);
-            currentNode = this.source.First;
+        _currentNode = _source.First;
     }
 
     public List<SemanticToken> Tokenize()
     {
-            while (currentNode != null)
+        while (_currentNode != null)
         {
-                charPosition = 0; // 重置字符位置
+            _charPosition = 0; // 重置字符位置
             SkipWhitespace();
 
-                if (currentNode == null) break; // 如果跳过空格后到达了末尾，则退出循环
+            if (_currentNode == null) break; // 如果跳过空格后到达了末尾，则退出循环
 
             SemanticToken? token = null;
 
             // 尝试解析各种类型的词法单元
-                if (DelimiterSemanticToken.TryParse(line, charPosition, currentNode, out var delimiterToken))
+            if (DelimiterSemanticToken.TryParse(_line, _charPosition, _currentNode, out var delimiterToken))
             {
                 token = delimiterToken;
             }
-                else if (CharacterSemanticToken.TryParse(line, charPosition, currentNode, out var characterToken))
+            else if (CharacterSemanticToken.TryParse(_line, _charPosition, _currentNode, out var characterToken))
             {
                 token = characterToken;
             }
-                else if (KeywordSemanticToken.TryParse(line, charPosition, currentNode, out var keywordToken))
+            else if (KeywordSemanticToken.TryParse(_line, _charPosition, _currentNode, out var keywordToken))
             {
                 token = keywordToken;
             }
-                else if (OperatorSemanticToken.TryParse(line, charPosition, currentNode, out var operatorToken))
+            else if (OperatorSemanticToken.TryParse(_line, _charPosition, _currentNode, out var operatorToken))
             {
                 token = operatorToken;
             }
-                else if (NumberSemanticToken.TryParse(line, charPosition, currentNode, out var numberToken))
+            else if (NumberSemanticToken.TryParse(_line, _charPosition, _currentNode, out var numberToken))
             {
                 token = numberToken;
             }
-                else if (IdentifierSemanticToken.TryParse(line, charPosition, currentNode, out var identifierToken))
+            else if (IdentifierSemanticToken.TryParse(_line, _charPosition, _currentNode, out var identifierToken))
             {
                 token = identifierToken;
             }
 
             if (token != null)
             {
-                    tokens.Add(token);
+                _tokens.Add(token);
                 // 根据词法单元的长度移动currentNode
                 MoveCurrentNode(token.LiteralValue.Length);
             }
@@ -68,28 +66,27 @@ namespace Canon.Core.LexicalParser
         }
 
         // tokens.Add(new EOFToken(line, charPosition)); // 添加EOF标记
-            return tokens;
+        return _tokens;
     }
 
     private void SkipWhitespace()
     {
-            while (currentNode != null && char.IsWhiteSpace(currentNode.Value))
+        while (_currentNode != null && char.IsWhiteSpace(_currentNode.Value))
         {
-                if (currentNode.Value == '\n')
+            if (_currentNode.Value == '\n')
             {
-                    line++;
+                _line++;
-                    charPosition = 0;
+                _charPosition = 0;
             }
-                currentNode = currentNode.Next;
+            _currentNode = _currentNode.Next;
         }
     }
 
     private void MoveCurrentNode(int steps)
     {
-            for (int i = 0; i < steps && currentNode != null; i++)
+        for (int i = 0; i < steps && _currentNode != null; i++)
         {
-                currentNode = currentNode.Next;
+            _currentNode = _currentNode.Next;
-            }
         }
     }
 }