expose filter introspection methods

Signed-off-by: William Casarin <[email protected]>

src/nostrdb.c

@@ -637,20 +637,20 @@ ndb_filter_elements_data(const struct ndb_filter *filter, int offset)
 	return data;
 }
 
-static inline unsigned char *
-ndb_filter_get_id_element(const struct ndb_filter *filter, struct ndb_filter_elements *els, int index)
+unsigned char *
+ndb_filter_get_id_element(const struct ndb_filter *filter, const struct ndb_filter_elements *els, int index)
 {
 	return ndb_filter_elements_data(filter, els->elements[index]);
 }
 
-static inline const char *
-ndb_filter_get_string_element(const struct ndb_filter *filter, struct ndb_filter_elements *els, int index)
+const char *
+ndb_filter_get_string_element(const struct ndb_filter *filter, const struct ndb_filter_elements *els, int index)
 {
 	return (const char *)ndb_filter_elements_data(filter, els->elements[index]);
 }
 
-static inline uint64_t
-ndb_filter_get_int_element(struct ndb_filter_elements *els, int index)
+uint64_t
+ndb_filter_get_int_element(const struct ndb_filter_elements *els, int index)
 {
 	return els->elements[index];
 }

src/nostrdb.h

@@ -488,6 +488,11 @@ int ndb_filter_add_id_element(struct ndb_filter *, const unsigned char *id);
 int ndb_filter_add_int_element(struct ndb_filter *, uint64_t integer);
 int ndb_filter_add_str_element(struct ndb_filter *, const char *str);
 
+// getting field elements
+unsigned char *ndb_filter_get_id_element(const struct ndb_filter *, const struct ndb_filter_elements *, int index);
+const char *ndb_filter_get_string_element(const struct ndb_filter *, const struct ndb_filter_elements *, int index);
+uint64_t ndb_filter_get_int_element(const struct ndb_filter_elements *, int index);
+
 struct ndb_filter_elements *ndb_filter_current_element(const struct ndb_filter *);
 struct ndb_filter_elements *ndb_filter_get_elements(const struct ndb_filter *, int);
 int ndb_filter_start_field(struct ndb_filter *, enum ndb_filter_fieldtype);