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commit/revisions: bookkeeping before refactoring

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There are a few things that need to move around a little before
making a big refactoring in the topo-order logic:

1. We need access to record_author_date() and
   compare_commits_by_author_date() in revision.c. These are used
   currently by sort_in_topological_order() in commit.c.

2. Moving these methods to commit.h requires adding an author_date_slab
   declaration to commit.h. Consumers will need their own implementation.

3. The add_parents_to_list() method in revision.c performs logic
   around the UNINTERESTING flag and other special cases depending
   on the struct rev_info. Allow this method to ignore a NULL 'list'
   parameter, as we will not be populating the list for our walk.
   Also rename the method to the slightly more generic name
   process_parents() to make clear that this method does more than
   add to a list (and no list is required anymore).

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2018-11-01 13:46:21 +00:00
committed by Junio C Hamano
parent f0d9cc4196
commit 5284fc5cc9
3 changed files with 21 additions and 13 deletions
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7
commit.h
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@ -8,6 +8,7 @@
#include "gpg-interface.h"
#include "string-list.h"
#include "pretty.h"
#include "commit-slab.h"
#define COMMIT_NOT_FROM_GRAPH 0xFFFFFFFF
#define GENERATION_NUMBER_INFINITY 0xFFFFFFFF
@ -328,6 +329,12 @@ extern int remove_signature(struct strbuf *buf);
*/
extern int check_commit_signature(const struct commit *commit, struct signature_check *sigc);
/* record author-date for each commit object */
struct author_date_slab;
void record_author_date(struct author_date_slab *author_date,
struct commit *commit);
int compare_commits_by_author_date(const void *a_, const void *b_, void *unused);
int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused);
int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused);