dictionary: Introduce SPLIT_NONE for dictionaries without split variables.

[pspp] / src / data / dictionary.h

diff --git a/src/data/dictionary.h b/src/data/dictionary.h
index d1f7f2828bc1b902603dc93d749c26dcbda0f0f1..050b4a8c4dff01febadf5f7896dd40c002d9066f 100644 (file)
--- a/src/data/dictionary.h
+++ b/src/data/dictionary.h
@@ -123,11 +123,22 @@ void dict_compact_values (struct dictionary *);
 struct caseproto *dict_get_compacted_proto (const struct dictionary *,
                                             unsigned int exclude_classes);
 
-/* SPLIT FILE variables. */
+/* SPLIT FILE variables.
+
+   SPLIT_NONE is used if and only if there are no split file variables. */
+enum split_type
+  {
+    SPLIT_NONE,                 /* No split file variables. */
+    SPLIT_SEPARATE,             /* Produce separate output for each split. */
+    SPLIT_LAYERED,              /* Output splits in same table.  */
+  };
 const struct variable *const *dict_get_split_vars (const struct dictionary *);
 size_t dict_get_n_splits (const struct dictionary *);
+enum split_type dict_get_split_type (const struct dictionary *);
 void dict_set_split_vars (struct dictionary *,
-                          struct variable *const *, size_t n);
+                          struct variable *const *, size_t n,
+                          enum split_type);
+void dict_clear_split_vars (struct dictionary *);
 
 /* File label. */
 const char *dict_get_label (const struct dictionary *);