refs.c: kill register_ref_store(), add register_submodule_ref_store()

This is the last function in this code (besides public API) that takes
submodule argument and handles both main/submodule cases. Break it down,
move main store registration in get_main_ref_store() and keep the rest
in register_submodule_ref_store().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs.c b/refs.c
index 66dc84787d777751bb57de0753ee9f7962dab590..87f64271acde1d29a8adfbebbe92dcdd0ec6b2b3 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1411,29 +1411,6 @@ static struct ref_store *lookup_submodule_ref_store(const char *submodule)
        return entry ? entry->refs : NULL;
 }
 
-/*
- * Register the specified ref_store to be the one that should be used
- * for submodule (or the main repository if submodule is NULL). It is
- * a fatal error to call this function twice for the same submodule.
- */
-static void register_ref_store(struct ref_store *refs, const char *submodule)
-{
-       if (!submodule) {
-               if (main_ref_store)
-                       die("BUG: main_ref_store initialized twice");
-
-               main_ref_store = refs;
-       } else {
-               if (!submodule_ref_stores.tablesize)
-                       hashmap_init(&submodule_ref_stores, submodule_hash_cmp, 0);
-
-               if (hashmap_put(&submodule_ref_stores,
-                               alloc_submodule_hash_entry(submodule, refs)))
-                       die("BUG: ref_store for submodule '%s' initialized twice",
-                           submodule);
-       }
-}
-
 /*
  * Create, record, and return a ref_store instance for the specified
  * submodule (or the main repository if submodule is NULL).
@@ -1448,7 +1425,6 @@ static struct ref_store *ref_store_init(const char *submodule)
                die("BUG: reference backend %s is unknown", be_name);
 
        refs = be->init(submodule);
-       register_ref_store(refs, submodule);
        return refs;
 }
 
@@ -1457,7 +1433,25 @@ static struct ref_store *get_main_ref_store(void)
        if (main_ref_store)
                return main_ref_store;
 
-       return ref_store_init(NULL);
+       main_ref_store = ref_store_init(NULL);
+       return main_ref_store;
+}
+
+/*
+ * Register the specified ref_store to be the one that should be used
+ * for submodule. It is a fatal error to call this function twice for
+ * the same submodule.
+ */
+static void register_submodule_ref_store(struct ref_store *refs,
+                                        const char *submodule)
+{
+       if (!submodule_ref_stores.tablesize)
+               hashmap_init(&submodule_ref_stores, submodule_hash_cmp, 0);
+
+       if (hashmap_put(&submodule_ref_stores,
+                       alloc_submodule_hash_entry(submodule, refs)))
+               die("BUG: ref_store for submodule '%s' initialized twice",
+                   submodule);
 }
 
 struct ref_store *get_ref_store(const char *submodule)
@@ -1481,6 +1475,7 @@ struct ref_store *get_ref_store(const char *submodule)
                return NULL;
 
        refs = ref_store_init(submodule);
+       register_submodule_ref_store(refs, submodule);
        return refs;
 }