Add an Ast::list function analogue to Ast::symbol

src/parser/mod.rs

@@ -148,6 +148,13 @@ impl Ast {
         }
     }
 
+    pub fn list(self) -> Option<Vec<Ast>> {
+        match self {
+            Ast::List(Localised { item, .. }) => Some(item),
+            _ => None,
+        }
+    }
+
     pub fn location(&self) -> &Location {
         match self {
             Ast::Symbol(Localised { location, .. }) => location,