add assert for hashes if an existing element is ever inserted into a ghash/edgehash.

the outliner does this intentionally, so add a flag to allow this situation optionally.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_edgehash.h b/source/blender/blenlib/BLI_edgehash.h
index 9ece3afde37..5d945bb9efc 100644
--- a/source/blender/blenlib/BLI_edgehash.h
+++ b/source/blender/blenlib/BLI_edgehash.h
@@ -36,6 +36,10 @@ typedef struct EdgeHashIterator EdgeHashIterator;
 
 typedef void (*EdgeHashFreeFP)(void *key);
 
+enum {
+	EDGEHASH_FLAG_ALLOW_DUPES = (1 << 0),  /* only checked for in debug mode */
+};
+
 EdgeHash       *BLI_edgehash_new(void);
 void            BLI_edgehash_free(EdgeHash *eh, EdgeHashFreeFP valfreefp);
 
@@ -65,6 +69,9 @@ int             BLI_edgehash_size(EdgeHash *eh);
 /* Remove all edges from hash. */
 void            BLI_edgehash_clear(EdgeHash *eh, EdgeHashFreeFP valfreefp);
 
+void            BLI_edgehash_flag_set(EdgeHash *eh, unsigned short flag);
+void            BLI_edgehash_flag_clear(EdgeHash *eh, unsigned short flag);
+
 /***/
 
 /**