/* -*- 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/.
 */

#ifndef INCLUDED_O3TL_PTR_CONTAINER_HXX
#define INCLUDED_O3TL_PTR_CONTAINER_HXX

#include <sal/config.h>

#include <memory>
#include <utility>

// Some glue for using std::unique_ptr with the Boost Pointer Container Library:

namespace o3tl { namespace ptr_container {

template<typename C, typename T> inline std::pair<typename C::iterator, bool>
insert(C & container, std::unique_ptr<T> && element) {
    std::pair<typename C::iterator, bool> r(container.insert(element.get()));
    element.release();
    return r;
}

template<typename C, typename T> inline std::pair<typename C::iterator, bool>
insert(
    C & container, typename C::key_type const & key,
    std::unique_ptr<T> && element)
{
    // At least Boost <= 1.56.0 boost::ptr_map_adaptor has odd key const-ness
    // discrepancy between
    //
    //   std::pair<iterator,bool> insert( key_type& k, T* x )
    //
    // and
    //
    //   template< class U >
    //   std::pair<iterator,bool> insert( const key_type& k,
    //                                    std::auto_ptr<U> x )
    std::pair<typename C::iterator, bool> r(
        container.insert(
            const_cast<typename C::key_type &>(key), element.get()));
    element.release();
    return r;
}

template<typename C, typename T>
inline void push_back(C & container, std::unique_ptr<T> && element) {
    container.push_back(element.get());
    element.release();
}

} }

#endif

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