static bool parse_if_clause (struct loop_trns *, struct expression **);
static bool parse_index_clause (struct loop_trns *, char index_var_name[]);
static void close_loop (void *);
static bool parse_if_clause (struct loop_trns *, struct expression **);
static bool parse_index_clause (struct loop_trns *, char index_var_name[]);
static void close_loop (void *);