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///////////////////////////////////////////////////////////////////////////////
//  Copyright 2015 John Maddock. 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_IS_BYTE_CONTAINER_HPP
#define BOOST_IS_BYTE_CONTAINER_HPP

#include <iterator>
#include <boost/mpl/has_xxx.hpp>
#include <boost/type_traits/is_integral.hpp>
#include <boost/type_traits/remove_cv.hpp>

namespace boost{ namespace multiprecision{ namespace detail{

   BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_member_const_iterator, const_iterator, false)

   template <class C, bool b>
   struct is_byte_container_imp
   {
      // Note: Don't use C::value_type as this is a rather widespread typedef, even for non-range types
      typedef typename boost::remove_cv<typename std::iterator_traits<typename C::const_iterator>::value_type>::type container_value_type;
      static const bool value = boost::is_integral<container_value_type>::value && (sizeof(container_value_type) == 1);
   };

   template <class C>
   struct is_byte_container_imp<C, false> : public boost::false_type {};

   template <class C>
   struct is_byte_container : public is_byte_container_imp<C, has_member_const_iterator<C>::value> {};


}}} // namespaces

#endif // BOOST_IS_BYTE_CONTAINER_HPP