fix: allow self/parent as identifier

src/parser/ast/mod.rs

@@ -423,6 +423,8 @@ pub enum Expression {
     },
     Identifier(Identifier),
     Static,
+    Self_,
+    Parent,
     Array {
         items: Vec<ArrayItem>,
     },

src/parser/internal/identifiers.rs

@@ -108,6 +108,8 @@ pub fn is_reserved_ident(kind: &TokenKind) -> bool {
     matches!(
         kind,
         TokenKind::Static
+            | TokenKind::Parent
+            | TokenKind::Self_
             | TokenKind::Abstract
             | TokenKind::Final
             | TokenKind::For

src/parser/mod.rs

@@ -1112,7 +1112,15 @@ impl Parser {
                 TokenKind::Static => {
                     state.next();
                     Expression::Static
-                }
+                },
+                TokenKind::Self_ => {
+                    state.next();
+                    Expression::Self_
+                },
+                TokenKind::Parent => {
+                    state.next();
+                    Expression::Parent
+                },
                 TokenKind::LiteralString(s) => {
                     let e = Expression::LiteralString { value: s.clone() };
                     state.next();