for loop

src/tokenizer.rs

@@ -37,6 +37,8 @@ pub enum TokenType {
     KeywordIf,
     KeywordElse,
     KeywordWhile,
+    KeywordFor,
+    KeywordIn,
     KeywordFunc,
     KeywordReturn,
     KeywordAssert,
@@ -310,6 +312,8 @@ impl Tokenizer {
             "if" => TokenType::KeywordIf,
             "else" => TokenType::KeywordElse,
             "while" => TokenType::KeywordWhile,
+            "for" => TokenType::KeywordFor,
+            "in" => TokenType::KeywordIn,
             "func" => TokenType::KeywordFunc,
             "return" => TokenType::KeywordReturn,
             "assert" => TokenType::KeywordAssert,