LoanableTypedCollection.hpp

// Copyright 2021 Proyectos y Sistemas de Mantenimiento SL (eProsima).
//
// Licensed 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

 
#ifndef FASTDDS_DDS_CORE__LOANABLETYPEDCOLLECTION_HPP
#define FASTDDS_DDS_CORE__LOANABLETYPEDCOLLECTION_HPP
 
#include <cassert>
#include <cstdint>
#include <stdexcept>
#include <type_traits>
 
#include <fastdds/dds/core/LoanableCollection.hpp>
 
namespace eprosima {
namespace fastdds {
namespace dds {

template<typename T, typename _NonConstEnabler = std::true_type>
class LoanableTypedCollection : public LoanableCollection
{
public:

    template<typename Enabler = _NonConstEnabler>
    typename std::enable_if<Enabler::value, T>::type& operator [](
            size_type n)
    {
        if (n >= length_)
        {
            throw std::out_of_range("");
        }
 
        return *static_cast<T*>(elements_[n]);
    }

    const T& operator [](
            size_type n) const
    {
        if (n >= length_)
        {
            throw std::out_of_range("");
        }
 
        return *static_cast<const T*>(elements_[n]);
    }
 
};
 
} // namespace dds
} // namespace fastdds
} // namespace eprosima
 
#endif // FASTDDS_DDS_CORE__LOANABLETYPEDCOLLECTION_HPP