range-set: New macro RANGE_SET_FOR_EACH to make iteration easier.

[pspp] / src / libpspp / range-set.h

diff --git a/src/libpspp/range-set.h b/src/libpspp/range-set.h
index 5b79f0e6ddf213e26087dc20d1ee83dcb2d1f14b..64d888f7f2cc316b2259062369b3793b5c624137 100644 (file)
--- a/src/libpspp/range-set.h
+++ b/src/libpspp/range-set.h
@@ -67,6 +67,11 @@ unsigned long int range_set_scan (const struct range_set *,
 
 static inline bool range_set_is_empty (const struct range_set *);
 
+#define RANGE_SET_FOR_EACH(NODE, RANGE_SET)             \
+        for ((NODE) = range_set_first (RANGE_SET);      \
+             (NODE) != NULL;                            \
+             (NODE) = range_set_next (RANGE_SET, NODE))
+
 static inline const struct range_set_node *range_set_first (
   const struct range_set *);
 static inline const struct range_set_node *range_set_next (