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revision walker: mini clean-up

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This removes the unnecessary indirection of "revs->prune_fn",
since that function is always the same one (or NULL), and there
is in fact not even an abstraction reason to make it a function
(i.e. its not called from some other file and doesn't allow us
to keep the function itself static or anything like that).

It then just replaces it with a bit that says "prune or not",
and if not pruning, every commit gets TREECHANGE.

That in turn means that

 - if (!revs->prune_fn || (flags & TREECHANGE))
 - if (revs->prune_fn && !(flags & TREECHANGE))

just become

 - if (flags & TREECHANGE)
 - if (!(flags & TREECHANGE))

respectively.

Together with adding the "single_parent()" helper function, the "complex"
conditional now becomes

	if (!(flags & TREECHANGE) && rev->dense && single_parent(commit))
		continue;

Also indirection of "revs->dense" checking is thrown away the
same way, because TREECHANGE bit is set appropriately now.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Linus Torvalds
2007-11-05 13:22:34 -08:00
committed by Junio C Hamano
parent 252a7c0235
commit 53b2c823f6
5 changed files with 35 additions and 26 deletions
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5
revision.h
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@ -15,8 +15,6 @@
struct rev_info;
struct log_info;
typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
struct rev_info {
/* Starting list */
struct commit_list *commits;
@ -28,12 +26,11 @@ struct rev_info {
/* Basic information */
const char *prefix;
void *prune_data;
prune_fn_t *prune_fn;
unsigned int early_output;
/* Traversal flags */
unsigned int dense:1,
prune:1,
no_merges:1,
no_walk:1,
remove_empty_trees:1,