replace-object: add repository argument to lookup_replace_object

Add a repository argument to allow callers of lookup_replace_object
to be more specific about which repository to handle. This is a small
mechanical change; it doesn't change the implementation to handle
repositories other than the_repository yet.

As with the previous commits, use a macro to catch callers passing a
repository other than the_repository at compile time.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/mktag.c

@@ -25,7 +25,7 @@ static int verify_object(const struct object_id *oid, const char *expected_type)
 	enum object_type type;
 	unsigned long size;
 	void *buffer = read_object_file(oid, &type, &size);
-	const struct object_id *repl = lookup_replace_object(oid);
+	const struct object_id *repl = lookup_replace_object(the_repository, oid);
 
 	if (buffer) {
 		if (type == type_from_string(expected_type))

object.c

@@ -247,7 +247,7 @@ struct object *parse_object(const struct object_id *oid)
 	unsigned long size;
 	enum object_type type;
 	int eaten;
-	const struct object_id *repl = lookup_replace_object(oid);
+	const struct object_id *repl = lookup_replace_object(the_repository, oid);
 	void *buffer;
 	struct object *obj;
 

replace-object.h

@@ -23,7 +23,8 @@ extern const struct object_id *do_lookup_replace_object_the_repository(const str
  * either sha1 or a pointer to a permanently-allocated value.  When
  * object replacement is suppressed, always return sha1.
  */
-static inline const struct object_id *lookup_replace_object(const struct object_id *oid)
+#define lookup_replace_object(r, s) lookup_replace_object_##r(s)
+static inline const struct object_id *lookup_replace_object_the_repository(const struct object_id *oid)
 {
 	if (!check_replace_refs ||
 	    (the_repository->objects->replace_map &&

sha1_file.c

@@ -1240,7 +1240,7 @@ int oid_object_info_extended(const struct object_id *oid, struct object_info *oi
 	int already_retried = 0;
 
 	if (flags & OBJECT_INFO_LOOKUP_REPLACE)
-		real = lookup_replace_object(oid);
+		real = lookup_replace_object(the_repository, oid);
 
 	if (is_null_oid(real))
 		return -1;
@@ -1384,8 +1384,8 @@ void *read_object_file_extended(const struct object_id *oid,
 	const struct packed_git *p;
 	const char *path;
 	struct stat st;
-	const struct object_id *repl = lookup_replace ? lookup_replace_object(oid)
+	const struct object_id *repl = lookup_replace ?
-						      : oid;
+		lookup_replace_object(the_repository, oid) : oid;
 
 	errno = 0;
 	data = read_object(repl->hash, type, size);

streaming.c

@@ -140,7 +140,7 @@ struct git_istream *open_istream(const struct object_id *oid,
 {
 	struct git_istream *st;
 	struct object_info oi = OBJECT_INFO_INIT;
-	const struct object_id *real = lookup_replace_object(oid);
+	const struct object_id *real = lookup_replace_object(the_repository, oid);
 	enum input_source src = istream_source(real, type, &oi);
 
 	if (src < 0)