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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
module com { module sun { module star { module beans {
/**
An optional value of a given type.
<p>This structure is used as the type of interface attributes corresponding
to instances of com::sun::star::beans::Property that
have the com::sun::star::beans::PropertyAttribute::MAYBEVOID. It might
also be useful in other situations, for example as the return type of an
interface method.</p>
*/
struct Optional<T> {
/**
Marks this structure instance as having an actual value.
*/
boolean IsPresent;
/**
The actual value of this structure instance.
<p>If no actual value is present, a producer of such a structure instance
should leave this member defaulted, and a consumer of such a structure
instance should ignore the specific value stored in this member.</p>
*/
T Value;
};
}; }; }; };
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