X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flibpspp%2Fhmapx.h;h=2fe7f9f770b21c7224182270dc87609ed7a0a104;hb=aaf7e27cbda4b400b6a98360fa7bab08e26c8696;hp=32a4452fe2417d58157ca8da27e079f2052fcc88;hpb=7fbfc32fc3c636959b0a25b3e76609f86519e84a;p=pspp

diff --git a/src/libpspp/hmapx.h b/src/libpspp/hmapx.h
index 32a4452fe2..2fe7f9f770 100644
--- a/src/libpspp/hmapx.h
+++ b/src/libpspp/hmapx.h
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2008 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -143,6 +143,7 @@ struct hmapx
 /* Creation and destruction. */
 static inline void hmapx_init (struct hmapx *);
 static inline void hmapx_swap (struct hmapx *, struct hmapx *);
+void hmapx_clear (struct hmapx *);
 void hmapx_destroy (struct hmapx *);
 
 /* Storage management. */
@@ -165,6 +166,7 @@ static inline struct hmapx_node *hmapx_next (const struct hmapx *,
                                              const struct hmapx_node *);
 
 /* Counting. */
+static inline bool hmapx_is_empty (const struct hmapx *);
 static inline size_t hmapx_count (const struct hmapx *);
 static inline size_t hmapx_capacity (const struct hmapx *);
 
@@ -404,6 +406,14 @@ hmapx_next (const struct hmapx *map, const struct hmapx_node *node)
   return HMAP_NEXT (node, struct hmapx_node, hmap_node, &map->hmap);
 }
 
+/* Returns true if MAP currently contains no data items, false
+   otherwise. */
+static inline bool
+hmapx_is_empty (const struct hmapx *map)
+{
+  return hmap_is_empty (&map->hmap);
+}
+
 /* Returns the number of data items currently in MAP. */
 static inline size_t
 hmapx_count (const struct hmapx *map)