array_view.h

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// -*- mode: c++; tab-width: 4; indent-tabs-mode: t; eval: (progn (c-set-style "stroustrup") (c-set-offset 'innamespace 0)); -*-
// vi:set ts=4 sts=4 sw=4 noet :
// Copyright 2012, The TPIE development team
// 
// This file is part of TPIE.
// 
// TPIE is free software: you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
// 
// TPIE is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
// License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with TPIE.  If not, see <http://www.gnu.org/licenses/>


#ifndef __ARRAY_VIEW_H__
#define  __ARRAY_VIEW_H__

#include <vector>
#include <tpie/array.h>
#include <tpie/array_view_base.h>
#include <tpie/internal_vector.h>
#include <type_traits>

namespace tpie {



template <typename T>
class array_view: public array_view_base<T> {
public:
    inline array_view(const array_view & o):
        array_view_base<T>(o) {}

    template <typename A>
    inline array_view(std::vector<T, A> & v):
        array_view_base<T>(&*(v.begin()), &(*v.end())) {}

    inline array_view(tpie::array<T> & v):
        array_view_base<T>(&*(v.begin()), &(*v.end())) {}

    inline array_view(tpie::internal_vector<T> & v):
        array_view_base<T>(&*(v.begin()), &(*v.end())) {}

    template <typename A>
    inline array_view(std::vector<T, A> & v, size_t start, size_t end):
        array_view_base<T>(&v[start], &v[end]) {}

    inline array_view(tpie::array<T> & v, size_t start, size_t end):
        array_view_base<T>(&v[start], &v[end]) {}

    inline array_view(T * start, T * end):
        array_view_base<T>(start, end) {}

    inline array_view(T * start, size_t size):
        array_view_base<T>(start, start+size) {}
};

template <typename T>
class array_view<const T>: public array_view_base<const T> {
public:
    inline array_view(array_view<T> o):
        array_view_base<const T>(&*(o.begin()), &*(o.end())) {}

    template <typename A>
    inline array_view(const std::vector<T, A> & v):
        array_view_base<const T>(&*(v.begin()), &*(v.end())) {}

    inline array_view(const tpie::array<T> & v):
        array_view_base<const T>(&*(v.begin()), &*(v.end())) {}

    inline array_view(const tpie::internal_vector<T> & v):
        array_view_base<const T>(&*(v.begin()), &(*v.end())) {}

    template <typename A>
    inline array_view(const std::vector<T, A> & v, size_t start, size_t end):
        array_view_base<const T>(&v[start], &v[end]) {}

    inline array_view(const tpie::array<T> & v, size_t start, size_t end):
        array_view_base<const T>(&v[start], &v[end]) {}

    inline array_view(const T * start, const T * end):
        array_view_base<const T>(start, end) {}

    inline array_view(const T * start, size_t size):
        array_view_base<const T>(start, start+size) {}
};


template <typename T>
array_view<typename std::remove_pointer<typename std::iterator_traits<T>::pointer>::type > make_array_view(T start, T end) {
    return array_view<typename std::remove_pointer<typename std::iterator_traits<T>::pointer>::type>(&*start, &*end);
}

template <typename T>
array_view<T> make_array_view(T * start, T * end) {
    return array_view<T>(start, end);
}

template <typename T>
array_view<typename T::value_type> make_array_view(T & s) {
    return make_array_view(s.begin(), s.end());
}

template <typename T>
array_view<typename T::value_type> make_array_view(T & s, size_t start, size_t end) {
    return make_array_view(s.begin() + start, s.begin() + end);
}

template <typename T>
array_view<const typename T::value_type> make_array_view(const T & s) {
    return make_array_view(s.begin(), s.end());
}

template <typename T>
array_view<const typename T::value_type> make_array_view(const T & s, size_t start, size_t end) {
    return make_array_view(s.begin() + start, s.begin() + end);
}




} //namespace tpie

#endif // __ARRAY_VIEW_H__