feat: 更新错误处理机制，增强词法分析器和解析器的错误报告功能

src/error/error.rs

@@ -2,13 +2,35 @@ use crate::lexer::Token;
 
 #[derive(Debug)]
 pub enum RuntimeError {
+    LexError { message: String, line: usize, column: usize },
     ParseError { message: String, token: Token },
     RuntimeError { message: String, token: Option<Token> },
 }
 
+impl RuntimeError {
+    pub fn lex(message: impl Into<String>, line: usize, column: usize) -> Self {
+        RuntimeError::LexError {
+            message: message.into(),
+            line,
+            column,
+        }
+    }
+
+    pub fn parse(message: impl Into<String>, token: Token) -> Self {
+        RuntimeError::ParseError {
+            message: message.into(),
+            token,
+        }
+    }
+
+}
+
 impl std::fmt::Display for RuntimeError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
+            RuntimeError::LexError { message, line, column } => {
+                write!(f, "[Lex Error] {} at line {}, column {}", message, line, column)
+            }
             RuntimeError::ParseError { message, token } => {
                 write!(f, "[Parse Error] {} at line {}, column {}", message, token.line, token.column)
             }