commit-graph: use commit_list_count()

Let commit_list_count() count the number of parents instead of
duplicating it.  Also store the result in an unsigned int, as that's
what the function returns, and the count is never negative.

Signed-off-by: René Scharfe <l.s.r@web.de>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/commit-graph.c b/commit-graph.c
index fe954ab5f845e65bc5cad987308aeb6598f2fd24..0cbb5037a36e95d466764cc0b852ca7caf1e85dd 100644 (file)
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -1276,7 +1276,6 @@ static uint32_t count_distinct_commits(struct write_commit_graph_context *ctx)
 static void copy_oids_to_commits(struct write_commit_graph_context *ctx)
 {
        uint32_t i;
-       struct commit_list *parent;
 
        ctx->num_extra_edges = 0;
        if (ctx->report_progress)
@@ -1284,7 +1283,8 @@ static void copy_oids_to_commits(struct write_commit_graph_context *ctx)
                        _("Finding extra edges in commit graph"),
                        ctx->oids.nr);
        for (i = 0; i < ctx->oids.nr; i++) {
-               int num_parents = 0;
+               unsigned int num_parents;
+
                display_progress(ctx->progress, i + 1);
                if (i > 0 && oideq(&ctx->oids.list[i - 1], &ctx->oids.list[i]))
                        continue;
@@ -1298,10 +1298,7 @@ static void copy_oids_to_commits(struct write_commit_graph_context *ctx)
 
                parse_commit_no_graph(ctx->commits.list[ctx->commits.nr]);
 
-               for (parent = ctx->commits.list[ctx->commits.nr]->parents;
-                    parent; parent = parent->next)
-                       num_parents++;
-
+               num_parents = commit_list_count(ctx->commits.list[ctx->commits.nr]->parents);
                if (num_parents > 2)
                        ctx->num_extra_edges += num_parents - 1;
 
@@ -1613,8 +1610,7 @@ static int commit_compare(const void *_a, const void *_b)
 
 static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx)
 {
-       uint32_t i, num_parents;
-       struct commit_list *parent;
+       uint32_t i;
 
        if (ctx->report_progress)
                ctx->progress = start_delayed_progress(
@@ -1632,10 +1628,9 @@ static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx)
                        die(_("unexpected duplicate commit id %s"),
                            oid_to_hex(&ctx->commits.list[i]->object.oid));
                } else {
-                       num_parents = 0;
-                       for (parent = ctx->commits.list[i]->parents; parent; parent = parent->next)
-                               num_parents++;
+                       unsigned int num_parents;
 
+                       num_parents = commit_list_count(ctx->commits.list[i]->parents);
                        if (num_parents > 2)
                                ctx->num_extra_edges += num_parents - 1;
                }