    /* -*- 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 .
     */

    #include <sal/config.h>

    #include <map>

    #include <comphelper/namecontainer.hxx>
    #include <comphelper/sequence.hxx>
    #include <cppuhelper/implbase.hxx>
    #include <osl/mutex.hxx>

    typedef std::map<OUString, css::uno::Any> SvGenericNameContainerMapImpl;

    namespace comphelper
    {
        /** this is the base helper class for NameContainer that's also declared in this header. */
        class NameContainer : public ::cppu::WeakImplHelper< css::container::XNameContainer >
        {
        public:
            explicit NameContainer( const css::uno::Type& aType );

            // XNameContainer
            virtual void SAL_CALL insertByName( const OUString& aName, const css::uno::Any& aElement ) override;
            virtual void SAL_CALL removeByName( const OUString& Name ) override;

            // XNameReplace
            virtual void SAL_CALL replaceByName( const OUString& aName, const css::uno::Any& aElement ) override;

            // XNameAccess
            virtual css::uno::Any SAL_CALL getByName( const OUString& aName ) override;
            virtual css::uno::Sequence< OUString > SAL_CALL getElementNames(  ) override;
            virtual sal_Bool SAL_CALL hasByName( const OUString& aName ) override;

            // XElementAccess
            virtual sal_Bool SAL_CALL hasElements(  ) override;
            virtual css::uno::Type SAL_CALL getElementType(  ) override;

        private:
            SvGenericNameContainerMapImpl maProperties;
            const css::uno::Type maType;
            osl::Mutex maMutex;
        };
    }

    using namespace ::comphelper;
    using namespace ::osl;
    using namespace ::com::sun::star::uno;
    using namespace ::com::sun::star::container;
    using namespace ::com::sun::star::lang;

    NameContainer::NameContainer( const css::uno::Type& aType )
    : maType( aType )
    {
    }

    // XNameContainer
    void SAL_CALL NameContainer::insertByName( const OUString& aName, const Any& aElement )
    {
        MutexGuard aGuard( maMutex );

        if( maProperties.find( aName ) != maProperties.end() )
            throw ElementExistException();

        if( aElement.getValueType() != maType )
            throw IllegalArgumentException();

        maProperties.emplace(aName,aElement);
    }

    void SAL_CALL NameContainer::removeByName( const OUString& Name )
    {
        MutexGuard aGuard( maMutex );

        SvGenericNameContainerMapImpl::iterator aIter = maProperties.find( Name );
        if( aIter == maProperties.end() )
            throw NoSuchElementException();

        maProperties.erase( aIter );
    }

    // XNameReplace

    void SAL_CALL NameContainer::replaceByName( const OUString& aName, const Any& aElement )
    {
        MutexGuard aGuard( maMutex );

        SvGenericNameContainerMapImpl::iterator aIter( maProperties.find( aName ) );
        if( aIter == maProperties.end() )
            throw NoSuchElementException();

        if( aElement.getValueType() != maType )
            throw IllegalArgumentException();

        (*aIter).second = aElement;
    }

    // XNameAccess

    Any SAL_CALL NameContainer::getByName( const OUString& aName )
    {
        MutexGuard aGuard( maMutex );

        SvGenericNameContainerMapImpl::iterator aIter = maProperties.find( aName );
        if( aIter == maProperties.end() )
            throw NoSuchElementException();

        return (*aIter).second;
    }

    Sequence< OUString > SAL_CALL NameContainer::getElementNames(  )
    {
        MutexGuard aGuard( maMutex );

        return comphelper::mapKeysToSequence(maProperties);
    }

    sal_Bool SAL_CALL NameContainer::hasByName( const OUString& aName )
    {
        MutexGuard aGuard( maMutex );

        SvGenericNameContainerMapImpl::iterator aIter = maProperties.find( aName );
        return aIter != maProperties.end();
    }

    sal_Bool SAL_CALL NameContainer::hasElements(  )
    {
        MutexGuard aGuard( maMutex );

        return !maProperties.empty();
    }

    Type SAL_CALL NameContainer::getElementType()
    {
        return maType;
    }

    Reference< XNameContainer > comphelper::NameContainer_createInstance( const Type& aType )
    {
        return static_cast<XNameContainer*>(new NameContainer( aType ));
    }

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

↑ V572 It is odd that the object which was created using 'new' operator is immediately cast to another type.