Quelle EnvGuards.hxx Sprache: C

/* -*- 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 .
*/

/*
* This file is part of LibreOffice published API.
*/

#ifndef INCLUDED_CPPU_ENVGUARDS_HXX
#define INCLUDED_CPPU_ENVGUARDS_HXX

#include "uno/environment.hxx"

namespace cppu
{
    /** Environment Guard
        The provided Environment becomes entered in the constructor and left
        in the destructor.
        (http://wiki.openoffice.org/wiki/Uno/Cpp/Spec/Environment_Guard)

        @since UDK 3.2.7
    */
    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();
        }

        /** Checks if the associated environment is non empty.

            @return  0 == empty, 1 == non empty
        */
        bool SAL_CALL is() const
        {
            return m_env.is();
        }

        /** Leaves the associated environment and clears
            the reference.
        */
        void clear()
        {
            if (m_env.is())
            {
                m_env.enter();
                m_env.clear();
            }
        }
    };

    /** Environment Anti-Guard
        Any entered Environment becomes left in the constructor and re-entered
        in the destructor.
        (http://wiki.openoffice.org/wiki/Uno/Cpp/Spec/Environment_AntiGuard)

        @since UDK 3.2.7
    */
    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

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

quality100%

¤ Dauer der Verarbeitung: 0.17 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.