casereader: New function casereader_advance().

[pspp-builds.git] / src / data / casereader.h

diff --git a/src/data/casereader.h b/src/data/casereader.h
index deab5641661ec111d6751254f77c73ca77200550..fb9d50ff68e31308cc8ab8ef6cc70d6f356f01e6 100644 (file)
--- a/src/data/casereader.h
+++ b/src/data/casereader.h
@@ -77,8 +77,10 @@ const struct taint *casereader_get_taint (const struct casereader *);
 
 casenumber casereader_get_case_cnt (struct casereader *);
 casenumber casereader_count_cases (struct casereader *);
-size_t casereader_get_value_cnt (struct casereader *);
+void casereader_truncate (struct casereader *, casenumber);
+const struct caseproto *casereader_get_proto (const struct casereader *);
 
+casenumber casereader_advance (struct casereader *, casenumber);
 void casereader_transfer (struct casereader *, struct casewriter *);
 \f
 struct casereader *
@@ -105,7 +107,8 @@ casereader_create_counter (struct casereader *, casenumber *counter,
                            casenumber initial_value);
 
 struct casereader *
-casereader_create_translator (struct casereader *, size_t output_value_cnt,
+casereader_create_translator (struct casereader *,
+                              const struct caseproto *output_proto,
                               struct ccase *(*translate) (struct ccase *,
                                                           void *aux),
                               bool (*destroy) (void *aux),
@@ -139,5 +142,10 @@ casereader_create_append_rank (struct casereader *,
                               enum rank_error *err,
                               distinct_func *distinct_callback, void *aux);
 
+struct casereader *
+casereader_create_distinct (struct casereader *input,
+                           const struct variable *key,
+                           const struct variable *weight);
+
 
 #endif /* data/casereader.h */