feat: 添加赋值运算符支持，更新解析器、解释器和词法分析器以处理相关语法

2026-06-16 08:55:21 +08:00
parent ae3060708d
commit a40c8d1e9e
6 changed files with 123 additions and 13 deletions
@@ -56,9 +56,27 @@ impl Lexer {
            ',' => TokenKind::Comma,
            ';' => TokenKind::Semicolon,

-            '+' => TokenKind::Plus,
-            '-' => TokenKind::Minus,
-            '*' => TokenKind::Star,
+            '+' => {
+                if self.match_char('=') {
+                    TokenKind::PlusEqual
+                } else {
+                    TokenKind::Plus
+                }
+            }
+            '-' => {
+                if self.match_char('=') {
+                    TokenKind::MinusEqual
+                } else {
+                    TokenKind::Minus
+                }
+            }
+            '*' => {
+                if self.match_char('=') {
+                    TokenKind::StarEqual
+                } else {
+                    TokenKind::Star
+                }
+            }
            '.' => TokenKind::Dot,
            ':' => TokenKind::Colon,
            '[' => TokenKind::LeftBracket,
@@ -71,6 +89,8 @@ impl Lexer {
                        self.advance();
                    }
                    return None;
+                } else if self.match_char('=') {
+                    TokenKind::SlashEqual
                } else {
                    TokenKind::Slash
                }