LibManual: Add SubsectionNode

Userland/Libraries/LibManual/SubsectionNode.cpp

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "SubsectionNode.h"
+
+namespace Manual {
+
+SubsectionNode::SubsectionNode(NonnullRefPtr<SectionNode> parent, StringView name)
+    : SectionNode(name, name)
+    , m_parent(move(parent))
+{
+}
+
+Node const* SubsectionNode::parent() const { return m_parent; }
+
+ErrorOr<String> SubsectionNode::name() const { return m_name; }
+
+ErrorOr<String> SubsectionNode::path() const
+{
+    return String::formatted("{}/{}", TRY(m_parent->path()), m_section);
+}
+
+}