};
extern const struct case_source_class storage_source_class;
-extern const struct case_source_class file_type_source_class;
-extern const struct case_source_class input_program_source_class;
struct dictionary;
struct case_source *create_case_source (const struct case_source_class *,
void *);
void free_case_source (struct case_source *);
-int case_source_is_complex (const struct case_source *);
int case_source_is_class (const struct case_source *,
const struct case_source_class *);
struct case_sink *create_case_sink (const struct case_sink_class *,
const struct dictionary *,
void *);
-void case_sink_open (struct case_sink *);
-void case_sink_write (struct case_sink *, const struct ccase *);
-void case_sink_destroy (struct case_sink *);
void free_case_sink (struct case_sink *);
\f
/* Number of cases to lag. */