X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=lib%2Fnotmuch-private.h;h=a36549d292a55025645cf97356740b9e2f69572c;hp=ea836f721291c3d7d84bfb9edb3f70b3ea717155;hb=0c950146a14fa2bb0a0bf542073b2cdca141afd1;hpb=4d17a34286dc67fd434a9c8ca3518bf878ecf78b

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index ea836f72..a36549d2 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -146,6 +146,13 @@ typedef enum _notmuch_private_status {
      :									\
      (notmuch_status_t) private_status)
 
+/* Flags shared by various lookup functions. */
+typedef enum _notmuch_find_flags {
+    /* If set, create the necessary document (or documents) if they
+     * are missing.  Requires a read/write database. */
+    NOTMUCH_FIND_CREATE = 1<<0,
+} notmuch_find_flags_t;
+
 typedef struct _notmuch_doc_id_set notmuch_doc_id_set_t;
 
 typedef struct _notmuch_string_list notmuch_string_list_t;
@@ -188,6 +195,7 @@ _notmuch_database_find_unique_doc_id (notmuch_database_t *notmuch,
 notmuch_status_t
 _notmuch_database_find_directory_id (notmuch_database_t *database,
 				     const char *path,
+				     notmuch_find_flags_t flags,
 				     unsigned int *directory_id);
 
 const char *
@@ -206,6 +214,7 @@ _notmuch_database_filename_to_direntry (void *ctx,
 notmuch_directory_t *
 _notmuch_directory_create (notmuch_database_t *notmuch,
 			   const char *path,
+			   notmuch_find_flags_t flags,
 			   notmuch_status_t *status_ret);
 
 unsigned int
@@ -495,8 +504,26 @@ notmuch_filenames_t *
 _notmuch_filenames_create (const void *ctx,
 			   notmuch_string_list_t *list);
 
-#pragma GCC visibility pop
-
 NOTMUCH_END_DECLS
 
+#ifdef __cplusplus
+/* Implicit typecast from 'void *' to 'T *' is okay in C, but not in
+ * C++. In talloc_steal, an explicit cast is provided for type safety
+ * in some GCC versions. Otherwise, a cast is required. Provide a
+ * template function for this to maintain type safety, and redefine
+ * talloc_steal to use it.
+ */
+#if !(__GNUC__ >= 3)
+template <class T> T *
+_notmuch_talloc_steal (const void *new_ctx, const T *ptr)
+{
+    return static_cast<T *> (talloc_steal (new_ctx, ptr));
+}
+#undef talloc_steal
+#define talloc_steal _notmuch_talloc_steal
+#endif
+#endif
+
+#pragma GCC visibility pop
+
 #endif