void case_map_destroy (struct case_map *);
struct ccase *case_map_execute (const struct case_map *, struct ccase *);
-size_t case_map_get_value_cnt (const struct case_map *);
+const struct caseproto *case_map_get_proto (const struct case_map *);
struct casereader *case_map_create_input_translator (struct case_map *,
struct casereader *);