ref_cache: remove support for storing peeled values

Now that the `packed-refs` backend doesn't use `ref_cache`, there is
nobody left who might want to store peeled values of references in
`ref_cache`. So remove that feature.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs/packed-backend.c b/refs/packed-backend.c
index 3829e9c29437995652a557c6482dc0aecf8fba95..66e55251743c15f837d18b2ffa3a58641935bd9e 100644 (file)
--- a/refs/packed-backend.c
+++ b/refs/packed-backend.c
@@ -2,7 +2,6 @@
 #include "../config.h"
 #include "../refs.h"
 #include "refs-internal.h"
-#include "ref-cache.h"
 #include "packed-backend.h"
 #include "../iterator.h"
 #include "../lockfile.h"
@@ -226,6 +225,14 @@ static NORETURN void die_invalid_line(const char *path,
 
 }
 
+/*
+ * This value is set in `base.flags` if the peeled value of the
+ * current reference is known. In that case, `peeled` contains the
+ * correct peeled value for the reference, which might be `null_sha1`
+ * if the reference is not a tag or if it is broken.
+ */
+#define REF_KNOWS_PEELED 0x40
+
 /*
  * An iterator over a packed-refs file that is currently mmapped.
  */

diff --git a/refs/ref-cache.c b/refs/ref-cache.c
index 54dfb5218cab33271cbf5451deaef9379ce50f27..4f850e1b5c9ed1fae746a804ceceee42e2f54b86 100644 (file)
--- a/refs/ref-cache.c
+++ b/refs/ref-cache.c
@@ -38,7 +38,6 @@ struct ref_entry *create_ref_entry(const char *refname,
 
        FLEX_ALLOC_STR(ref, name, refname);
        oidcpy(&ref->u.value.oid, oid);
-       oidclr(&ref->u.value.peeled);
        ref->flag = flag;
        return ref;
 }
@@ -491,49 +490,10 @@ static int cache_ref_iterator_advance(struct ref_iterator *ref_iterator)
        }
 }
 
-enum peel_status peel_entry(struct ref_entry *entry, int repeel)
-{
-       enum peel_status status;
-
-       if (entry->flag & REF_KNOWS_PEELED) {
-               if (repeel) {
-                       entry->flag &= ~REF_KNOWS_PEELED;
-                       oidclr(&entry->u.value.peeled);
-               } else {
-                       return is_null_oid(&entry->u.value.peeled) ?
-                               PEEL_NON_TAG : PEEL_PEELED;
-               }
-       }
-       if (entry->flag & REF_ISBROKEN)
-               return PEEL_BROKEN;
-       if (entry->flag & REF_ISSYMREF)
-               return PEEL_IS_SYMREF;
-
-       status = peel_object(entry->u.value.oid.hash, entry->u.value.peeled.hash);
-       if (status == PEEL_PEELED || status == PEEL_NON_TAG)
-               entry->flag |= REF_KNOWS_PEELED;
-       return status;
-}
-
 static int cache_ref_iterator_peel(struct ref_iterator *ref_iterator,
                                   struct object_id *peeled)
 {
-       struct cache_ref_iterator *iter =
-               (struct cache_ref_iterator *)ref_iterator;
-       struct cache_ref_iterator_level *level;
-       struct ref_entry *entry;
-
-       level = &iter->levels[iter->levels_nr - 1];
-
-       if (level->index == -1)
-               die("BUG: peel called before advance for cache iterator");
-
-       entry = level->dir->entries[level->index];
-
-       if (peel_entry(entry, 0))
-               return -1;
-       oidcpy(peeled, &entry->u.value.peeled);
-       return 0;
+       return peel_object(ref_iterator->oid->hash, peeled->hash);
 }
 
 static int cache_ref_iterator_abort(struct ref_iterator *ref_iterator)

diff --git a/refs/ref-cache.h b/refs/ref-cache.h
index a082bfb06c8c420ee5bc4cb81c8b3624f1ba76bc..eda65e73edd2d978e7c07065b888219f42348d87 100644 (file)
--- a/refs/ref-cache.h
+++ b/refs/ref-cache.h
@@ -38,14 +38,6 @@ struct ref_value {
         * referred to by the last reference in the symlink chain.
         */
        struct object_id oid;
-
-       /*
-        * If REF_KNOWS_PEELED, then this field holds the peeled value
-        * of this reference, or null if the reference is known not to
-        * be peelable.  See the documentation for peel_ref() for an
-        * exact definition of "peelable".
-        */
-       struct object_id peeled;
 };
 
 /*
@@ -97,21 +89,14 @@ struct ref_dir {
  * public values; see refs.h.
  */
 
-/*
- * The field ref_entry->u.value.peeled of this value entry contains
- * the correct peeled value for the reference, which might be
- * null_sha1 if the reference is not a tag or if it is broken.
- */
-#define REF_KNOWS_PEELED 0x10
-
 /* ref_entry represents a directory of references */
-#define REF_DIR 0x20
+#define REF_DIR 0x10
 
 /*
  * Entry has not yet been read from disk (used only for REF_DIR
  * entries representing loose references)
  */
-#define REF_INCOMPLETE 0x40
+#define REF_INCOMPLETE 0x20
 
 /*
  * A ref_entry represents either a reference or a "subdirectory" of
@@ -252,17 +237,4 @@ struct ref_iterator *cache_ref_iterator_begin(struct ref_cache *cache,
                                              const char *prefix,
                                              int prime_dir);
 
-/*
- * Peel the entry (if possible) and return its new peel_status.  If
- * repeel is true, re-peel the entry even if there is an old peeled
- * value that is already stored in it.
- *
- * It is OK to call this function with a packed reference entry that
- * might be stale and might even refer to an object that has since
- * been garbage-collected.  In such a case, if the entry has
- * REF_KNOWS_PEELED then leave the status unchanged and return
- * PEEL_PEELED or PEEL_NON_TAG; otherwise, return PEEL_INVALID.
- */
-enum peel_status peel_entry(struct ref_entry *entry, int repeel);
-
 #endif /* REFS_REF_CACHE_H */