Add parsing of '.' (dot)

Signed-off-by: Marcel Müller <neikos@neikos.email>

src/lexer/mod.rs

@@ -239,6 +239,7 @@ pub enum TokenOperator {
     Lesser,
     LesserOrEqual,
     QuestionMark,
+    Dot,
 }
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
@@ -569,6 +570,7 @@ fn parse_operator<'input>(input: &mut Input<'input>) -> PResult<'input, Template
                 cut_err(fail),
             )),
             '?' => empty.value(TokenOperator::QuestionMark),
+            '.' => empty.value(TokenOperator::Dot),
             _ => fail,
         },
     )
@@ -930,4 +932,28 @@ mod tests {
         )
         "#);
     }
+
+    #[test]
+    fn parse_dot() {
+        let input = "{{= foo?.bar }}";
+        let output = parse(input.into());
+
+        insta::assert_debug_snapshot!(output, @r#"
+        Ok(
+            ParsedTemplate {
+                tokens: [
+                    [LeftDelim]"{{" (0..2),
+                    [WantsOutput]"=" (2..3),
+                    [Whitespace]" " (3..4),
+                    [Ident]"foo" (4..7),
+                    [Operator(QuestionMark)]"?" (7..8),
+                    [Operator(Dot)]"." (8..9),
+                    [Ident]"bar" (9..12),
+                    [Whitespace]" " (12..13),
+                    [RightDelim]"}}" (13..15),
+                ],
+            },
+        )
+        "#);
+    }
 }