AST - Store superclass as a var expr

src/ast.rs

@@ -38,7 +38,7 @@ pub struct ClassDecl {
     /// The token that represents the name of the class.
     pub name: Token,
     /// The token indicating the name of the parent class, if any.
-    pub superclass: Option<Token>,
+    pub superclass: Option<VariableExpr>,
     /// The list of class members.
     pub members: Vec<ClassMemberDecl>,
 }

src/dumper.rs

@@ -97,7 +97,9 @@ fn dump_statement(dumper: &mut Dumper, stmt: &StmtNode) {
         StmtNode::ClassDecl(decl) => {
             dumper.add_line(format!("class {}", decl.name.lexeme));
             if let Some(superclass) = &decl.superclass {
-                dumper.current_line().push_str(&format!(" < {}", superclass.lexeme));
+                dumper
+                    .current_line()
+                    .push_str(&format!(" < {}", superclass.token.lexeme));
             }
             dumper.current_line().push_str(" {");
             if !decl.members.is_empty() {

src/parser.rs

@@ -227,7 +227,10 @@ impl Parser {
         let name = self.consume_identifier("expected class name")?;
         let superclass = match self.expect(&[TokenType::Less]) {
             None => None,
-            Some(_) => Some(self.consume_identifier("expected superclass name")?),
+            Some(_) => Some(VariableExpr {
+                token: self.consume_identifier("expected superclass name")?.clone(),
+                id: self.make_id(),
+            }),
         };
 
         self.consume(&TokenType::LeftBrace, "'{' expected")?;