dictionary: Limit split file variables to 8, for compatibility.

[pspp] / src / data / dictionary.h

diff --git a/src/data/dictionary.h b/src/data/dictionary.h
index 067142cfd08f18761d6b086f7cbd1edb8c4bb5d9..47317a22cbc23e61a56de8602b09123daea92499 100644 (file)
--- a/src/data/dictionary.h
+++ b/src/data/dictionary.h
@@ -123,12 +123,16 @@ 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.  */
   };
+#define MAX_SPLITS 8
 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 *);