Add SerdStatement

2 files changed, 80 insertions, 0 deletions

diff --git a/src/statement.c b/src/statement.c
new file mode 100644
index 00000000..5e2802eb
--- /dev/null
+++ b/src/statement.c
@@ -0,0 +1,47 @@
+/*
+  Copyright 2011-2018 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "statement.h"
+
+const SerdNode*
+serd_statement_get_node(const SerdStatement* statement, SerdField field)
+{
+	return statement->nodes[field];
+}
+
+const SerdNode*
+serd_statement_get_subject(const SerdStatement* statement)
+{
+	return statement->nodes[SERD_SUBJECT];
+}
+
+const SerdNode*
+serd_statement_get_predicate(const SerdStatement* statement)
+{
+	return statement->nodes[SERD_PREDICATE];
+}
+
+const SerdNode*
+serd_statement_get_object(const SerdStatement* statement)
+{
+	return statement->nodes[SERD_OBJECT];
+}
+
+const SerdNode*
+serd_statement_get_graph(const SerdStatement* statement)
+{
+	return statement->nodes[SERD_GRAPH];
+}
diff --git a/src/statement.h b/src/statement.h
new file mode 100644
index 00000000..7b5d752d
--- /dev/null
+++ b/src/statement.h
@@ -0,0 +1,33 @@
+/*
+  Copyright 2011-2018 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef SERD_STATEMENT_H
+#define SERD_STATEMENT_H
+
+#include "serd/serd.h"
+
+/**
+   Quad of nodes (a statement), or a quad pattern.
+
+   Nodes are ordered (S P O G).  The ID of the default graph is 0.
+*/
+typedef const SerdNode* SerdQuad[4];
+
+struct SerdStatementImpl {
+	SerdQuad nodes;
+};
+
+#endif  // SERD_STATEMENT_H