diff options
| author | Campbell Barton <ideasman42@gmail.com> | 2019-02-20 01:15:43 +0300 |
|---|---|---|
| committer | Campbell Barton <ideasman42@gmail.com> | 2019-02-20 01:38:33 +0300 |
| commit | c1c01f062eddd084a122026c462f477299cf9d13 (patch) | |
| tree | 473c1362448dd58c3f8bd0354c2e2580f88981e6 /source/blender/blenlib/BLI_listbase.h | |
| parent | 0e7409d466f25f70674151b5fe62177104938729 (diff) | |
BLI_listbase: add an iterator macro that supports removal
Avoids manually defining 'for' loops that store the next item in the
linked list.
Diffstat (limited to 'source/blender/blenlib/BLI_listbase.h')
| -rw-r--r-- | source/blender/blenlib/BLI_listbase.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/source/blender/blenlib/BLI_listbase.h b/source/blender/blenlib/BLI_listbase.h index 85be4405d6c..cb0d394bd0b 100644 --- a/source/blender/blenlib/BLI_listbase.h +++ b/source/blender/blenlib/BLI_listbase.h @@ -125,7 +125,13 @@ if ((lb)->last && (lb_init || (lb_init = (lb)->last))) { \ #define LISTBASE_FOREACH(type, var, list) \ for (type var = (type)((list)->first); \ var != NULL; \ - var = (type)(((Link*)(var))->next)) + var = (type)(((Link *)(var))->next)) + +/** A verion of #LISTBASE_FOREACH that supports removing the item we're looping over. */ +#define LISTBASE_FOREACH_MUTABLE(type, var, list) \ + for (type var = (type)((list)->first), *var##_iter_next; \ + ((var != NULL) ? ((void)(var##_iter_next = (type)(((Link *)(var))->next)), 1) : 0); \ + var = var##_iter_next) #ifdef __cplusplus } |