1 files changed, 68 insertions, 0 deletions
diff --git a/include/serd/sink.h b/include/serd/sink.h
new file mode 100644
index 00000000..97b47a2f
--- /dev/null
+++ b/include/serd/sink.h
@@ -0,0 +1,68 @@
+// Copyright 2011-2021 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#ifndef SERD_SINK_H
+#define SERD_SINK_H
+
+#include "serd/attributes.h"
+#include "serd/node.h"
+#include "serd/statement.h"
+#include "serd/status.h"
+
+SERD_BEGIN_DECLS
+
+/**
+   @defgroup serd_sink Sink
+   @ingroup serd_streaming
+   @{
+*/
+
+/**
+   Sink function for base URI changes.
+
+   Called whenever the base URI of the serialisation changes.
+*/
+typedef SerdStatus (*SerdBaseFunc)(void* SERD_NULLABLE          handle,
+                                   const SerdNode* SERD_NONNULL uri);
+
+/**
+   Sink function for namespace definitions.
+
+   Called whenever a prefix is defined in the serialisation.
+*/
+typedef SerdStatus (*SerdPrefixFunc)(void* SERD_NULLABLE          handle,
+                                     const SerdNode* SERD_NONNULL name,
+                                     const SerdNode* SERD_NONNULL uri);
+
+/**
+   Sink function for statements.
+
+   Called for every RDF statement in the serialisation.
+*/
+typedef SerdStatus (*SerdStatementFunc)(
+  void* SERD_NULLABLE           handle,
+  SerdStatementFlags            flags,
+  const SerdNode* SERD_NULLABLE graph,
+  const SerdNode* SERD_NONNULL  subject,
+  const SerdNode* SERD_NONNULL  predicate,
+  const SerdNode* SERD_NONNULL  object,
+  const SerdNode* SERD_NULLABLE object_datatype,
+  const SerdNode* SERD_NULLABLE object_lang);
+
+/**
+   Sink function for anonymous node end markers.
+
+   This is called to indicate that the anonymous node with the given `value`
+   will no longer be referred to by any future statements (so the anonymous
+   node is finished).
+*/
+typedef SerdStatus (*SerdEndFunc)(void* SERD_NULLABLE          handle,
+                                  const SerdNode* SERD_NONNULL node);
+
+/**
+   @}
+*/
+
+SERD_END_DECLS
+
+#endif // SERD_SINK_H