OTS/OTSCPP/Tools/boost/qvm/vec_traits_array.hpp

//Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.

//Distributed under the Boost Software License, Version 1.0. (See accompanying
//file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_QVM_DEC6035EA1C211DEA5E8ECB856D89593
#define BOOST_QVM_DEC6035EA1C211DEA5E8ECB856D89593

#include <boost/qvm/inline.hpp>
#include <boost/qvm/deduce_vec.hpp>
#include <boost/qvm/detail/remove_const.hpp>
#include <boost/qvm/assert.hpp>

namespace
boost
    {
    namespace
    qvm
        {
        template <class T,int M,int N>
        struct
        vec_traits<T[M][N]>
            {
            static int const dim=0;
            typedef void scalar_type;
            };

        template <class T,int Dim>
        struct
        vec_traits<T[Dim]>
            {
            typedef T this_vector[Dim];
            typedef typename qvm_detail::remove_const<T>::type scalar_type;
            static int const dim=Dim;

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element( this_vector const & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<Dim);
                return x[I];
                }

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element( this_vector & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<Dim);
                return x[I];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element_idx( int i, this_vector const & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<Dim);
                return x[i];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element_idx( int i, this_vector & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<Dim);
                return x[i];
                }
            };

        template <class T,int Dim,int D>
        struct
        deduce_vec<T[Dim],D>
            {
            typedef vec<T,D> type;
            };

        template <class T,int Dim,int D>
        struct
        deduce_vec<T const[Dim],D>
            {
            typedef vec<T,D> type;
            };

        template <class T1,class T2,int Dim,int D>
        struct
        deduce_vec2<T1[Dim],T2[Dim],D>
            {
            typedef vec<typename deduce_scalar<T1,T2>::type,D> type;
            };

        template <int Dim,class T>
        T (&ptr_vref( T * ptr ))[Dim]
            {
            return *reinterpret_cast<T (*)[Dim]>(ptr);
            }
        }
    }

#endif