1 files changed, 10 insertions, 0 deletions
diff --git a/serd/serd.h b/serd/serd.h
index be0239dc..4a6ac7a9 100644
--- a/serd/serd.h
+++ b/serd/serd.h
@@ -217,6 +217,16 @@ typedef enum {
 } SerdNodeFlag;
 
 /**
+   Field in a statement.
+*/
+typedef enum {
+	SERD_SUBJECT   = 0,  /**< Subject */
+	SERD_PREDICATE = 1,  /**< Predicate ("key") */
+	SERD_OBJECT    = 2,  /**< Object    ("value") */
+	SERD_GRAPH     = 3   /**< Graph     ("context") */
+} SerdField;
+
+/**
    Bitwise OR of SerdNodeFlag values.
 */
 typedef uint32_t SerdNodeFlags;