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boost/multi_array/allocators.hpp

// Copyright 2018 Glen Joseph Fernandes
// (glenjofe@gmail.com)
//
// 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_MULTI_ARRAY_ALLOCATORS_HPP
#define BOOST_MULTI_ARRAY_ALLOCATORS_HPP

#include <boost/config.hpp>
#if !defined(BOOST_NO_CXX11_ALLOCATOR)
#include <memory>
#else
#include <new>
#endif

namespace boost {
namespace detail {
namespace multi_array {

template<class A, class T>
inline void destroy(A& allocator, T* ptr, T* end)
{
  for (; ptr != end; ++ptr) {
#if !defined(BOOST_NO_CXX11_ALLOCATOR)
    std::allocator_traits<A>::destroy(allocator,ptr);
#else
    ptr->~T();
#endif
  }
}

template<class A, class T>
inline void construct(A& allocator, T* ptr)
{
#if !defined(BOOST_NO_CXX11_ALLOCATOR)
  std::allocator_traits<A>::construct(allocator,ptr);
#else
  ::new(static_cast<void*>(ptr)) T();
#endif
}

#if !defined(BOOST_NO_EXCEPTIONS)
template<class A, class T>
inline void construct(A& allocator, T* ptr, T* end)
{
  T* start = ptr;
  try {
    for (; ptr != end; ++ptr) {
      boost::detail::multi_array::construct(allocator,ptr);
    }
  } catch (...) {
    boost::detail::multi_array::destroy(allocator,start,ptr);
    throw;
  }
}
#else
template<class A, class T>
inline void construct(A& allocator, T* ptr, T* end)
{
  for (; ptr != end; ++ptr) {
    boost::detail::multi_array::construct(allocator,ptr);
  }
}
#endif

} // multi_array
} // detail
} // boost

#endif