list-objects: consolidate traverse_commit_list[_filtered]

Now that all consumers of traverse_commit_list_filtered() populate the
'filter' member of 'struct rev_info', we can drop that parameter from
the method prototype to simplify things. In addition, the only thing
different now between traverse_commit_list_filtered() and
traverse_commit_list() is the presence of the 'omitted' parameter, which
is only non-NULL for one caller. We can consolidate these two methods by
having one call the other and use the simpler form everywhere the
'omitted' parameter would be NULL.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/pack-objects.c

@@ -3778,9 +3778,9 @@ static void get_object_list(int ac, const char **av)
 
 	if (!fn_show_object)
 		fn_show_object = show_object;
-	traverse_commit_list_filtered(&revs.filter, &revs,
-				      show_commit, fn_show_object, NULL,
-				      NULL);
+	traverse_commit_list(&revs,
+			     show_commit, fn_show_object,
+			     NULL);
 
 	if (unpack_unreachable_expiration) {
 		revs.ignore_missing_links = 1;

builtin/rev-list.c

@@ -729,7 +729,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 		oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
 
 	traverse_commit_list_filtered(
-		&revs.filter, &revs, show_commit, show_object, &info,
+		&revs, show_commit, show_object, &info,
 		(arg_print_omitted ? &omitted_objects : NULL));
 
 	if (arg_print_omitted) {

list-objects.c

@@ -416,35 +416,25 @@ static void do_traverse(struct traversal_context *ctx)
 	strbuf_release(&csp);
 }
 
-void traverse_commit_list(struct rev_info *revs,
-			  show_commit_fn show_commit,
-			  show_object_fn show_object,
-			  void *show_data)
-{
-	struct traversal_context ctx;
-	ctx.revs = revs;
-	ctx.show_commit = show_commit;
-	ctx.show_object = show_object;
-	ctx.show_data = show_data;
-	ctx.filter = NULL;
-	do_traverse(&ctx);
-}
-
 void traverse_commit_list_filtered(
-	struct list_objects_filter_options *filter_options,
 	struct rev_info *revs,
 	show_commit_fn show_commit,
 	show_object_fn show_object,
 	void *show_data,
 	struct oidset *omitted)
 {
-	struct traversal_context ctx;
+	struct traversal_context ctx = {
+		.revs = revs,
+		.show_object = show_object,
+		.show_commit = show_commit,
+		.show_data = show_data,
+	};
+
+	if (revs->filter.choice)
+		ctx.filter = list_objects_filter__init(omitted, &revs->filter);
 
-	ctx.revs = revs;
-	ctx.show_object = show_object;
-	ctx.show_commit = show_commit;
-	ctx.show_data = show_data;
-	ctx.filter = list_objects_filter__init(omitted, filter_options);
 	do_traverse(&ctx);
-	list_objects_filter__free(ctx.filter);
+
+	if (ctx.filter)
+		list_objects_filter__free(ctx.filter);
 }

list-objects.h

@@ -7,7 +7,6 @@ struct rev_info;
 
 typedef void (*show_commit_fn)(struct commit *, void *);
 typedef void (*show_object_fn)(struct object *, const char *, void *);
-void traverse_commit_list(struct rev_info *, show_commit_fn, show_object_fn, void *);
 
 typedef void (*show_edge_fn)(struct commit *);
 void mark_edges_uninteresting(struct rev_info *revs,
@@ -18,11 +17,20 @@ struct oidset;
 struct list_objects_filter_options;
 
 void traverse_commit_list_filtered(
-	struct list_objects_filter_options *filter_options,
 	struct rev_info *revs,
 	show_commit_fn show_commit,
 	show_object_fn show_object,
 	void *show_data,
 	struct oidset *omitted);
 
+static inline void traverse_commit_list(
+	struct rev_info *revs,
+	show_commit_fn show_commit,
+	show_object_fn show_object,
+	void *show_data)
+{
+	traverse_commit_list_filtered(revs, show_commit,
+				      show_object, show_data, NULL);
+}
+
 #endif /* LIST_OBJECTS_H */

pack-bitmap.c

@@ -822,9 +822,9 @@ static struct bitmap *find_objects(struct bitmap_index *bitmap_git,
 		show_data.bitmap_git = bitmap_git;
 		show_data.base = base;
 
-		traverse_commit_list_filtered(&revs->filter, revs,
-					      show_commit, show_object,
-					      &show_data, NULL);
+		traverse_commit_list(revs,
+				     show_commit, show_object,
+				     &show_data);
 
 		revs->include_check = NULL;
 		revs->include_check_obj = NULL;