Add more information to the comment introducing the four reference
transaction update functions, so that each function's docstring
doesn't have to repeat it. Add a pointer from the individual
functions' docstrings to the introductory comment.
Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
---
refs.h | 66 +++++++++++++++++++++++++++++++++++++++++++-----------------------
1 file changed, 43 insertions(+), 23 deletions(-)
diff --git a/refs.h b/refs.h
index 08abd2c..4c5e3d2 100644
--- a/refs.h
+++ b/refs.h
@@ -255,11 +255,31 @@ enum action_on_err {
struct ref_transaction *ref_transaction_begin(struct strbuf *err);
/*
- * The following functions add a reference check or update to a
- * ref_transaction. In all of them, refname is the name of the
- * reference to be affected. The functions make internal copies of
- * refname and msg, so the caller retains ownership of these parameters.
- * flags can be REF_NODEREF; it is passed to update_ref_lock().
+ * Reference transaction updates
+ *
+ * The following four functions add a reference check or update to a
+ * ref_transaction. They have some common similar parameters:
+ *
+ * transaction -- a pointer to an open ref_transaction, obtained
+ * from ref_transaction_begin().
+ *
+ * refname -- the name of the reference to be affected.
+ *
+ * flags -- flags affecting the update, passed to
+ * update_ref_lock(). Can be REF_NODEREF, which means that
+ * symbolic references should not be followed.
+ *
+ * msg -- a message describing the change (for the reflog).
+ *
+ * err -- a strbuf for receiving a description of any error that
+ * might have occured.
+ *
+ * The functions make internal copies of refname and msg, so the
+ * caller retains ownership of these parameters.
+ *
+ * The functions return 0 on success and non-zero on failure. A
+ * failure means that the transaction as a whole has failed and needs
+ * to be rolled back.
*/
/*
@@ -273,9 +293,8 @@ struct ref_transaction *ref_transaction_begin(struct strbuf *err);
* whole transaction fails. If old_sha1 is NULL, then the previous
* value is not checked.
*
- * Return 0 on success and non-zero on failure. Any failure in the
- * transaction means that the transaction as a whole has failed and
- * will need to be rolled back.
+ * See the above comment "Reference transaction updates" for more
+ * information.
*/
int ref_transaction_update(struct ref_transaction *transaction,
const char *refname,
@@ -285,13 +304,13 @@ int ref_transaction_update(struct ref_transaction *transaction,
struct strbuf *err);
/*
- * Add a reference creation to transaction. new_sha1 is the value
- * that the reference should have after the update; it must not be the
- * null SHA-1. It is verified that the reference does not exist
+ * Add a reference creation to transaction. new_sha1 is the value that
+ * the reference should have after the update; it must not be
+ * null_sha1. It is verified that the reference does not exist
* already.
- * Function returns 0 on success and non-zero on failure. A failure to create
- * means that the transaction as a whole has failed and will need to be
- * rolled back.
+ *
+ * See the above comment "Reference transaction updates" for more
+ * information.
*/
int ref_transaction_create(struct ref_transaction *transaction,
const char *refname,
@@ -300,12 +319,12 @@ int ref_transaction_create(struct ref_transaction *transaction,
struct strbuf *err);
/*
- * Add a reference deletion to transaction. If old_sha1 is non-NULL, then
- * it holds the value that the reference should have had before
- * the update (which must not be the null SHA-1).
- * Function returns 0 on success and non-zero on failure. A failure to delete
- * means that the transaction as a whole has failed and will need to be
- * rolled back.
+ * Add a reference deletion to transaction. If old_sha1 is non-NULL,
+ * then it holds the value that the reference should have had before
+ * the update (which must not be null_sha1).
+ *
+ * See the above comment "Reference transaction updates" for more
+ * information.
*/
int ref_transaction_delete(struct ref_transaction *transaction,
const char *refname,
@@ -316,9 +335,10 @@ int ref_transaction_delete(struct ref_transaction *transaction,
/*
* Verify, within a transaction, that refname has the value old_sha1,
* or, if old_sha1 is null_sha1, then verify that the reference
- * doesn't exist. old_sha1 must be non-NULL. Function returns 0 on
- * success and non-zero on failure. A failure to verify means that the
- * transaction as a whole has failed and will need to be rolled back.
+ * doesn't exist. old_sha1 must be non-NULL.
+ *
+ * See the above comment "Reference transaction updates" for more
+ * information.
*/
int ref_transaction_verify(struct ref_transaction *transaction,
const char *refname,
--
2.1.4
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