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bisect: libify exit_if_skipped_commits to error_if_skipped* and its dependents

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Since we want to get rid of git-bisect.sh, it would be necessary to
convert those exit() calls to return statements so that errors can be
reported.

Emulate try catch in C by converting `exit(<positive-value>)` to
`return <negative-value>`. Follow POSIX conventions to return
<negative-value> to indicate error.

Update all callers to handle the error returns.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pranit Bauva 2020-02-17 09:40:34 +01:00 committed by Junio C Hamano
parent 7613ec594a
commit ce58b5d8b1
2 changed files with 15 additions and 7 deletions
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17
bisect.c
View File

@ -661,11 +661,11 @@ static void bisect_common(struct rev_info *revs)
mark_edges_uninteresting(revs, NULL, 0);
}
static void exit_if_skipped_commits(struct commit_list *tried,
static enum bisect_error error_if_skipped_commits(struct commit_list *tried,
const struct object_id *bad)
{
if (!tried)
return;
return BISECT_OK;
printf("There are only 'skip'ped commits left to test.\n"
"The first %s commit could be any of:\n", term_bad);
@ -676,7 +676,8 @@ static void exit_if_skipped_commits(struct commit_list *tried,
if (bad)
printf("%s\n", oid_to_hex(bad));
printf(_("We cannot bisect more!\n"));
exit(2);
return BISECT_ONLY_SKIPPED_LEFT;
}
static int is_expected_rev(const struct object_id *oid)
@ -950,6 +951,7 @@ enum bisect_error bisect_next_all(struct repository *r, const char *prefix, int
struct rev_info revs;
struct commit_list *tried;
int reaches = 0, all = 0, nr, steps;
enum bisect_error res = BISECT_OK;
struct object_id *bisect_rev;
char *steps_msg;
@ -972,8 +974,9 @@ enum bisect_error bisect_next_all(struct repository *r, const char *prefix, int
* We should exit here only if the "bad"
* commit is also a "skip" commit.
*/
exit_if_skipped_commits(tried, NULL);
res = error_if_skipped_commits(tried, NULL);
if (res < 0)
exit(-res);
printf(_("%s was both %s and %s\n"),
oid_to_hex(current_bad_oid),
term_good,
@ -990,7 +993,9 @@ enum bisect_error bisect_next_all(struct repository *r, const char *prefix, int
bisect_rev = &revs.commits->item->object.oid;
if (oideq(bisect_rev, current_bad_oid)) {
exit_if_skipped_commits(tried, current_bad_oid);
res = error_if_skipped_commits(tried, current_bad_oid);
if (res)
exit(-res);
printf("%s is the first %s commit\n", oid_to_hex(bisect_rev),
term_bad);
show_diff_tree(r, prefix, revs.commits->item);

5
bisect.h
View File

@ -37,10 +37,13 @@ struct rev_list_info {
* commit has been found (and possibly checked out) and it
* should be tested.
* BISECT_FAILED error code: default error code.
* BISECT_ONLY_SKIPPED_LEFT error code: only skipped
* commits left to be tested.
*/
enum bisect_error {
BISECT_OK = 0,
BISECT_FAILED = -1
BISECT_FAILED = -1,
BISECT_ONLY_SKIPPED_LEFT = -2
};
enum bisect_error bisect_next_all(struct repository *r,