EnvGuards.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
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 * 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 .
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/*
 * This file is part of LibreOffice published API.
 */
 
#ifndef INCLUDED_CPPU_ENVGUARDS_HXX
#define INCLUDED_CPPU_ENVGUARDS_HXX
 
#include "uno/environment.hxx"
 
 
namespace cppu
{
    class EnvGuard
    {
        css::uno::Environment m_env;
 
    public:
        explicit EnvGuard(css::uno::Environment const & env)
        {
            if (env.is())
            {
                m_env = css::uno::Environment::getCurrent();
                env.enter();
            }
        }
 
        ~EnvGuard()
        {
            m_env.enter();
        }
 
        bool SAL_CALL is() const
        {
            return m_env.is();
        }
 
        void clear()
        {
            if (m_env.is())
            {
                m_env.enter();
                m_env.clear();
            }
        }
    };
 
    class AntiEnvGuard
    {
        css::uno::Environment m_env;
 
    public:
        explicit AntiEnvGuard()
            : m_env(css::uno::Environment::getCurrent())
        {
            uno_Environment_enter(NULL);
        }
 
        ~AntiEnvGuard()
        {
            m_env.enter();
        }
    };
}
 
#endif
 
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