82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
// Copyright 2002 The Trustees of Indiana University.
|
|
|
|
// Use, modification and distribution is subject to 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)
|
|
|
|
// Boost.MultiArray Library
|
|
// Authors: Ronald Garcia
|
|
// Jeremy Siek
|
|
// Andrew Lumsdaine
|
|
// See http://www.boost.org/libs/multi_array for documentation.
|
|
|
|
#ifndef BOOST_INDEX_GEN_RG071801_HPP
|
|
#define BOOST_INDEX_GEN_RG071801_HPP
|
|
|
|
#include "boost/array.hpp"
|
|
#include "boost/multi_array/index_range.hpp"
|
|
#include "boost/multi_array/range_list.hpp"
|
|
#include "boost/multi_array/types.hpp"
|
|
#include <algorithm>
|
|
#include <cstddef>
|
|
|
|
namespace boost {
|
|
namespace detail {
|
|
namespace multi_array {
|
|
|
|
|
|
template <int NumRanges, int NumDims>
|
|
struct index_gen {
|
|
private:
|
|
typedef ::boost::detail::multi_array::index index;
|
|
typedef ::boost::detail::multi_array::size_type size_type;
|
|
typedef index_range<index,size_type> range;
|
|
public:
|
|
template <int Dims, int Ranges>
|
|
struct gen_type {
|
|
typedef index_gen<Ranges,Dims> type;
|
|
};
|
|
|
|
typedef typename range_list_generator<range,NumRanges>::type range_list;
|
|
range_list ranges_;
|
|
|
|
index_gen() { }
|
|
|
|
template <int ND>
|
|
explicit index_gen(const index_gen<NumRanges-1,ND>& rhs,
|
|
const range& r)
|
|
{
|
|
std::copy(rhs.ranges_.begin(),rhs.ranges_.end(),ranges_.begin());
|
|
*ranges_.rbegin() = r;
|
|
}
|
|
|
|
index_gen<NumRanges+1,NumDims+1>
|
|
operator[](const range& r) const
|
|
{
|
|
index_gen<NumRanges+1,NumDims+1> tmp;
|
|
std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin());
|
|
*tmp.ranges_.rbegin() = r;
|
|
return tmp;
|
|
}
|
|
|
|
index_gen<NumRanges+1,NumDims>
|
|
operator[](index idx) const
|
|
{
|
|
index_gen<NumRanges+1,NumDims> tmp;
|
|
std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin());
|
|
*tmp.ranges_.rbegin() = range(idx);
|
|
return tmp;
|
|
}
|
|
|
|
static index_gen<0,0> indices() {
|
|
return index_gen<0,0>();
|
|
}
|
|
};
|
|
|
|
} // namespace multi_array
|
|
} // namespace detail
|
|
} // namespace boost
|
|
|
|
|
|
#endif // BOOST_INDEX_GEN_RG071801_HPP
|