add bool var toggle function

Signed-off-by: Ava Hahn <ava@aidanis.online>

src/stl.rs

@@ -231,7 +231,7 @@ fn _store_callback(ast: &Seg, syms: &mut SymTable, env_cfg: bool) -> Result<Ctr,
                                     arg_syms: arg_list.clone(),
                                 }),
                                 name: identifier.clone(),
-                                args: Args::Strict(arg_list.into_iter().map(Type::from).collect()),
+                                args: Args::Lazy(arg_list.len() as u128),
                                 conditional_branches: false,
                             },
                         );