[PATCH v2 23/38] refs: make peel_ref() virtual

[Michael Haggerty <mhagger@xxxxxxxxxxxx>]

For now it only supports the main reference store.

Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 refs.c               | 7 +++++++
 refs/files-backend.c | 6 ++++--
 refs/refs-internal.h | 3 +++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/refs.c b/refs.c
index 74874e5..f10f86a 100644
--- a/refs.c
+++ b/refs.c
@@ -1428,6 +1428,13 @@ int pack_refs(unsigned int flags)
 	return refs->be->pack_refs(refs, flags);
 }
 
+int peel_ref(const char *refname, unsigned char *sha1)
+{
+	struct ref_store *refs = get_ref_store(NULL);
+
+	return refs->be->peel_ref(refs, refname, sha1);
+}
+
 int create_symref(const char *ref_target, const char *refs_heads_master,
 		  const char *logmsg)
 {
diff --git a/refs/files-backend.c b/refs/files-backend.c
index bf53670..8d43e0b 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1759,9 +1759,10 @@ static enum peel_status peel_entry(struct ref_entry *entry, int repeel)
 	return status;
 }
 
-int peel_ref(const char *refname, unsigned char *sha1)
+static int files_peel_ref(struct ref_store *ref_store,
+			  const char *refname, unsigned char *sha1)
 {
-	struct files_ref_store *refs = get_files_ref_store(NULL, "peel_ref");
+	struct files_ref_store *refs = files_downcast(ref_store, 0, "peel_ref");
 	int flag;
 	unsigned char base[20];
 
@@ -4037,6 +4038,7 @@ struct ref_storage_be refs_be_files = {
 	files_transaction_commit,
 
 	files_pack_refs,
+	files_peel_ref,
 	files_create_symref,
 
 	files_read_raw_ref,
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index bf96503..84c81ad 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -501,6 +501,8 @@ typedef int ref_transaction_commit_fn(struct ref_store *refs,
 				      struct strbuf *err);
 
 typedef int pack_refs_fn(struct ref_store *ref_store, unsigned int flags);
+typedef int peel_ref_fn(struct ref_store *ref_store,
+			const char *refname, unsigned char *sha1);
 typedef int create_symref_fn(struct ref_store *ref_store,
 			     const char *ref_target,
 			     const char *refs_heads_master,
@@ -561,6 +563,7 @@ struct ref_storage_be {
 	ref_transaction_commit_fn *transaction_commit;
 
 	pack_refs_fn *pack_refs;
+	peel_ref_fn *peel_ref;
 	create_symref_fn *create_symref;
 
 	read_raw_ref_fn *read_raw_ref;
-- 
2.9.3