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A new function to move list at the beginning of another list

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This is a change of the BLI_movelisttolist but in reverse order.
This commit is contained in:
Antonio Vazquez
2018-09-29 16:39:45 +02:00
parent 0f9b7560db
commit 2ca67de960
2 changed files with 21 additions and 0 deletions
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1
source/blender/blenlib/BLI_listbase.h
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@@ -82,6 +82,7 @@ void BLI_listbase_swaplinks(struct ListBase *listbase, void *vlinka, void *vlink
void BLI_listbases_swaplinks(struct ListBase *listbasea, struct ListBase *listbaseb, void *vlinka, void *vlinkb) ATTR_NONNULL(2, 3);
void BLI_movelisttolist(struct ListBase *dst, struct ListBase *src) ATTR_NONNULL(1, 2);
void BLI_movelisttolist_reverse(struct ListBase *dst, struct ListBase *src) ATTR_NONNULL(1, 2);
void BLI_duplicatelist(struct ListBase *dst, const struct ListBase *src) ATTR_NONNULL(1, 2);
void BLI_listbase_reverse(struct ListBase *lb) ATTR_NONNULL(1);
void BLI_listbase_rotate_first(struct ListBase *lb, void *vlink) ATTR_NONNULL(1, 2);

20
source/blender/blenlib/intern/listbase.c
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@@ -67,6 +67,26 @@ void BLI_movelisttolist(ListBase *dst, ListBase *src)
src->first = src->last = NULL;
}
/**
* moves the entire contents of \a src at the begining of \a dst.
*/
void BLI_movelisttolist_reverse(ListBase *dst, ListBase *src)
{
if (src->first == NULL) return;
if (dst->first == NULL) {
dst->first = src->first;
dst->last = src->last;
}
else {
((Link *)src->last)->next = dst->first;
((Link *)dst->first)->prev = src->last;
dst->first = src->first;
}
src->first = src->last = NULL;
}
/**
* Prepends \a vlink (assumed to begin with a Link) onto listbase.
*/