object: convert internal hash_obj() to object_id

Now that lookup_object() has an object_id, we can consistently pass that
around instead of a raw sha1. We still convert to a hash to pass to
sha1hash(), but the goal is for that to go away shortly.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/object.c b/object.c
index 34c1d0dc8f886c2c72f5b2992ea69f329ec6c918..dbfdbe504dd329d23a091731f151cb5ede10adf3 100644 (file)
--- a/object.c
+++ b/object.c
@@ -59,9 +59,9 @@ int type_from_string_gently(const char *str, ssize_t len, int gentle)
  * the specified sha1.  n must be a power of 2.  Please note that the
  * return value is *not* consistent across computer architectures.
  */
-static unsigned int hash_obj(const unsigned char *sha1, unsigned int n)
+static unsigned int hash_obj(const struct object_id *oid, unsigned int n)
 {
-       return sha1hash(sha1) & (n - 1);
+       return sha1hash(oid->hash) & (n - 1);
 }
 
 /*
@@ -71,7 +71,7 @@ static unsigned int hash_obj(const unsigned char *sha1, unsigned int n)
  */
 static void insert_obj_hash(struct object *obj, struct object **hash, unsigned int size)
 {
-       unsigned int j = hash_obj(obj->oid.hash, size);
+       unsigned int j = hash_obj(&obj->oid, size);
 
        while (hash[j]) {
                j++;
@@ -93,7 +93,7 @@ struct object *lookup_object(struct repository *r, const struct object_id *oid)
        if (!r->parsed_objects->obj_hash)
                return NULL;
 
-       first = i = hash_obj(oid->hash, r->parsed_objects->obj_hash_size);
+       first = i = hash_obj(oid, r->parsed_objects->obj_hash_size);
        while ((obj = r->parsed_objects->obj_hash[i]) != NULL) {
                if (oideq(oid, &obj->oid))
                        break;