The documentation for the DO_FOR_EACH_* flags is sprinkled over the
refs-internal.h file. We define the two flags in one spot, and then
describe them in more detail far away from there, in the definitions of
refs_ref_iterator_begin() and ref_iterator_advance_fn().
Let's try to organize this a bit better:
- convert the #defines to an enum. This makes it clear that they are
related, and that the enum shows the complete set of flags.
- combine all descriptions for each flag in a single spot, next to the
flag's definition
- use the enum rather than a bare int for functions which take the
flags. This helps readers realize which flags can be used.
- clarify the mention of flags for ref_iterator_advance_fn(). It does
not take flags itself, but is meant to depend on ones set up
earlier.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
refs.c | 10 ++++++----
refs/refs-internal.h | 46 ++++++++++++++++++++++++++------------------
2 files changed, 33 insertions(+), 23 deletions(-)
diff --git a/refs.c b/refs.c
index 8b9f7c3a80..c28bd6a818 100644
--- a/refs.c
+++ b/refs.c
@@ -1413,7 +1413,8 @@ int head_ref(each_ref_fn fn, void *cb_data)
struct ref_iterator *refs_ref_iterator_begin(
struct ref_store *refs,
- const char *prefix, int trim, int flags)
+ const char *prefix, int trim,
+ enum do_for_each_ref_flags flags)
{
struct ref_iterator *iter;
@@ -1479,7 +1480,8 @@ static int do_for_each_ref_helper(struct repository *r,
}
static int do_for_each_ref(struct ref_store *refs, const char *prefix,
- each_ref_fn fn, int trim, int flags, void *cb_data)
+ each_ref_fn fn, int trim,
+ enum do_for_each_ref_flags flags, void *cb_data)
{
struct ref_iterator *iter;
struct do_for_each_ref_help hp = { fn, cb_data };
@@ -1516,7 +1518,7 @@ int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
{
- unsigned int flag = 0;
+ enum do_for_each_ref_flags flag = 0;
if (broken)
flag = DO_FOR_EACH_INCLUDE_BROKEN;
@@ -1528,7 +1530,7 @@ int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
each_ref_fn fn, void *cb_data,
unsigned int broken)
{
- unsigned int flag = 0;
+ enum do_for_each_ref_flags flag = 0;
if (broken)
flag = DO_FOR_EACH_INCLUDE_BROKEN;
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index 7b30910974..2c4e1739f2 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -245,16 +245,30 @@ int refs_rename_ref_available(struct ref_store *refs,
/* We allow "recursive" symbolic refs. Only within reason, though */
#define SYMREF_MAXDEPTH 5
-/* Include broken references in a do_for_each_ref*() iteration: */
-#define DO_FOR_EACH_INCLUDE_BROKEN 0x01
-
/*
- * Only include per-worktree refs in a do_for_each_ref*() iteration.
- * Normally this will be used with a files ref_store, since that's
- * where all reference backends will presumably store their
- * per-worktree refs.
+ * These flags are passed to refs_ref_iterator_begin() (and do_for_each_ref(),
+ * which feeds it).
*/
-#define DO_FOR_EACH_PER_WORKTREE_ONLY 0x02
+enum do_for_each_ref_flags {
+ /*
+ * Include broken references in a do_for_each_ref*() iteration, which
+ * would normally be omitted. This includes both refs that point to
+ * missing objects (a true repository corruption), ones with illegal
+ * names (which we prefer not to expose to callers), as well as
+ * dangling symbolic refs (i.e., those that point to a non-existent
+ * ref; this is not a corruption, but as they have no valid oid, we
+ * omit them from normal iteration results).
+ */
+ DO_FOR_EACH_INCLUDE_BROKEN = (1 << 0),
+
+ /*
+ * Only include per-worktree refs in a do_for_each_ref*() iteration.
+ * Normally this will be used with a files ref_store, since that's
+ * where all reference backends will presumably store their
+ * per-worktree refs.
+ */
+ DO_FOR_EACH_PER_WORKTREE_ONLY = (1 << 1),
+};
/*
* Reference iterators
@@ -357,16 +371,12 @@ int is_empty_ref_iterator(struct ref_iterator *ref_iterator);
* Return an iterator that goes over each reference in `refs` for
* which the refname begins with prefix. If trim is non-zero, then
* trim that many characters off the beginning of each refname.
- * The output is ordered by refname. The following flags are supported:
- *
- * DO_FOR_EACH_INCLUDE_BROKEN: include broken references in
- * the iteration.
- *
- * DO_FOR_EACH_PER_WORKTREE_ONLY: only produce REF_TYPE_PER_WORKTREE refs.
+ * The output is ordered by refname.
*/
struct ref_iterator *refs_ref_iterator_begin(
struct ref_store *refs,
- const char *prefix, int trim, int flags);
+ const char *prefix, int trim,
+ enum do_for_each_ref_flags flags);
/*
* A callback function used to instruct merge_ref_iterator how to
@@ -454,10 +464,8 @@ void base_ref_iterator_free(struct ref_iterator *iter);
/*
* backend-specific implementation of ref_iterator_advance. For symrefs, the
* function should set REF_ISSYMREF, and it should also dereference the symref
- * to provide the OID referent. If DO_FOR_EACH_INCLUDE_BROKEN is set, symrefs
- * with non-existent referents and refs pointing to non-existent object names
- * should also be returned. If DO_FOR_EACH_PER_WORKTREE_ONLY, only
- * REF_TYPE_PER_WORKTREE refs should be returned.
+ * to provide the OID referent. It should respect do_for_each_ref_flags
+ * that were passed to refs_ref_iterator_begin().
*/
typedef int ref_iterator_advance_fn(struct ref_iterator *ref_iterator);
--
2.33.0.1071.gb37e412355
