carray.hpp

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/***************************************************************************
  tag: The SourceWorks  Tue Sep 7 00:55:18 CEST 2010  carray.hpp

                        carray.hpp -  description
                           -------------------
    begin                : Tue September 07 2010
    copyright            : (C) 2010 The SourceWorks
    email                : peter@thesourceworks.com

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
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 *   version 2 of the License.                                             *
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 *   software library without restriction.  Specifically, if other files   *
 *   instantiate templates or use macros or inline functions from this     *
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 *   resulting executable to be covered by the GNU General Public          *
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#ifndef ORO_CARRAY_HPP_
#define ORO_CARRAY_HPP_

#include <boost/version.hpp>
#if BOOST_VERSION >= 106400
// The class name has been changed from boost::serialization::array<T> to array_wrapper<T> in Boost 1.61,
// but the header has only be renamed in Boost 1.64. Starting from Boost 1.65 array.hpp includes array_wrapper.hpp,
// but with 1.64 compilation fails if array_wrapper.hpp is not included.
# include <boost/serialization/array_wrapper.hpp>
#else
# include <boost/serialization/array.hpp>
#endif
#include <boost/array.hpp>

namespace RTT
{
    namespace types {

        template<class T>
        class carray
        {
        public:
            typedef T value_type;

            carray(value_type* t, std::size_t s) :
                m_t( s ? t : 0),
                m_element_count(s)
            {}

            carray() : m_t(0), m_element_count(0) {}

#if BOOST_VERSION >= 106100
            carray( boost::serialization::array_wrapper<T> const& orig)
#else
            carray( boost::serialization::array<T> const& orig)
#endif
            : m_t( orig.address() ), m_element_count( orig.count() ) {
                if (m_element_count == 0)
                    m_t = 0;
            }

            template<std::size_t N>
            carray( boost::array<T,N> & orig)
            : m_t( orig.c_array() ), m_element_count( N ) {
                if (m_element_count == 0)
                    m_t = 0;
            }

            void init(value_type* t, std::size_t s) {
                m_t = s ? t : 0;
                m_element_count = s;
            }

            value_type* address() const
            {
              return m_t;
            }

            std::size_t count() const
            {
              return m_element_count;
            }

            template <class OtherT>
            const carray<T>& operator=( const carray<OtherT>& orig ) {
                if (&orig != this)
                    for(std::size_t i = 0; i != orig.count() && i != count(); ++i)
                        m_t[i] = orig.address()[i];
                return *this;
            }

            template <class OtherT>
#if BOOST_VERSION >= 106100
            const carray<T>& operator=( boost::serialization::array_wrapper<OtherT> const& orig ) {
#else
            const carray<T>& operator=( boost::serialization::array<OtherT> const& orig ) {
#endif
                if (orig.address() != m_t)
                    for(std::size_t i = 0; i != orig.count() && i != count(); ++i)
                        m_t[i] = orig.address()[i];
                return *this;
            }

            template <class OtherT, std::size_t OtherN>
            const carray<T>& operator=( const boost::array<OtherT,OtherN>& orig ) {
                if (orig.data() != m_t)
                    for(std::size_t i = 0; i != orig.size() && i != count(); ++i)
                        m_t[i] = orig[i];
                return *this;
            }

        private:
            value_type* m_t;
            std::size_t m_element_count;
        };
    }
}

#endif /* ORO_CARRAY_HPP_ */