[PATCH 09/20] cat-file: get rid of goto in ref-filter

[Olga Telezhnaya <olyatelezhnaya@gmail.com>]

Get rid of goto command in ref-filter for better readability.

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored by: Jeff King <peff@peff.net>
---
 ref-filter.c | 103 ++++++++++++++++++++++++++++++-----------------------------
 1 file changed, 53 insertions(+), 50 deletions(-)

diff --git a/ref-filter.c b/ref-filter.c
index 2bd9a8fc4e39c..1b8c8787190a9 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1405,16 +1405,60 @@ static const char *get_refname(struct used_atom *atom, struct ref_array_item *re
 	return show_ref(&atom->u.refname, ref->refname);
 }
 
+static void need_object(struct ref_array_item *ref) {
+	struct object *obj;
+	const struct object_id *tagged;
+	unsigned long size;
+	int eaten;
+	void *buf = get_obj(&ref->objectname, &obj, &size, &eaten);
+	if (!buf)
+		die(_("missing object %s for %s"),
+		    oid_to_hex(&ref->objectname), ref->refname);
+	if (!obj)
+		die(_("parse_object_buffer failed on %s for %s"),
+		    oid_to_hex(&ref->objectname), ref->refname);
+
+	grab_values(ref->value, 0, obj, buf, size);
+	if (!eaten)
+		free(buf);
+
+	/*
+	 * If there is no atom that wants to know about tagged
+	 * object, we are done.
+	 */
+	if (!need_tagged || (obj->type != OBJ_TAG))
+		return;
+
+	/*
+	 * If it is a tag object, see if we use a value that derefs
+	 * the object, and if we do grab the object it refers to.
+	 */
+	tagged = &((struct tag *)obj)->tagged->oid;
+
+	/*
+	 * NEEDSWORK: This derefs tag only once, which
+	 * is good to deal with chains of trust, but
+	 * is not consistent with what deref_tag() does
+	 * which peels the onion to the core.
+	 */
+	buf = get_obj(tagged, &obj, &size, &eaten);
+	if (!buf)
+		die(_("missing object %s for %s"),
+		    oid_to_hex(tagged), ref->refname);
+	if (!obj)
+		die(_("parse_object_buffer failed on %s for %s"),
+		    oid_to_hex(tagged), ref->refname);
+	grab_values(ref->value, 1, obj, buf, size);
+	if (!eaten)
+		free(buf);
+}
+
 /*
  * Parse the object referred by ref, and grab needed value.
  */
 static void populate_value(struct ref_array_item *ref)
 {
-	void *buf;
-	struct object *obj;
-	int eaten, i;
-	unsigned long size;
-	const struct object_id *tagged;
+	int i;
 
 	ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
 
@@ -1528,53 +1572,12 @@ static void populate_value(struct ref_array_item *ref)
 
 	for (i = 0; i < used_atom_cnt; i++) {
 		struct atom_value *v = &ref->value[i];
-		if (v->s == NULL)
-			goto need_obj;
+		if (v->s == NULL) {
+			need_object(ref);
+			break;
+		}
 	}
 	return;
-
- need_obj:
-	buf = get_obj(&ref->objectname, &obj, &size, &eaten);
-	if (!buf)
-		die(_("missing object %s for %s"),
-		    oid_to_hex(&ref->objectname), ref->refname);
-	if (!obj)
-		die(_("parse_object_buffer failed on %s for %s"),
-		    oid_to_hex(&ref->objectname), ref->refname);
-
-	grab_values(ref->value, 0, obj, buf, size);
-	if (!eaten)
-		free(buf);
-
-	/*
-	 * If there is no atom that wants to know about tagged
-	 * object, we are done.
-	 */
-	if (!need_tagged || (obj->type != OBJ_TAG))
-		return;
-
-	/*
-	 * If it is a tag object, see if we use a value that derefs
-	 * the object, and if we do grab the object it refers to.
-	 */
-	tagged = &((struct tag *)obj)->tagged->oid;
-
-	/*
-	 * NEEDSWORK: This derefs tag only once, which
-	 * is good to deal with chains of trust, but
-	 * is not consistent with what deref_tag() does
-	 * which peels the onion to the core.
-	 */
-	buf = get_obj(tagged, &obj, &size, &eaten);
-	if (!buf)
-		die(_("missing object %s for %s"),
-		    oid_to_hex(tagged), ref->refname);
-	if (!obj)
-		die(_("parse_object_buffer failed on %s for %s"),
-		    oid_to_hex(tagged), ref->refname);
-	grab_values(ref->value, 1, obj, buf, size);
-	if (!eaten)
-		free(buf);
 }
 
 /*

--
https://github.com/git/git/pull/450