39 lines
845 B
C++
39 lines
845 B
C++
#ifndef BOOST_METAPARSE_V1_UTIL_IS_DIGIT_HPP
|
|
#define BOOST_METAPARSE_V1_UTIL_IS_DIGIT_HPP
|
|
|
|
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2009 - 2010.
|
|
// 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)
|
|
|
|
#include <boost/metaparse/v1/util/in_range_c.hpp>
|
|
|
|
#include <boost/mpl/vector.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace metaparse
|
|
{
|
|
namespace v1
|
|
{
|
|
namespace util
|
|
{
|
|
template <class C = boost::mpl::na>
|
|
struct is_digit : in_range_c<char, '0', '9'>::apply<C> {};
|
|
|
|
template <>
|
|
struct is_digit<boost::mpl::na>
|
|
{
|
|
typedef is_digit type;
|
|
|
|
template <class C = boost::mpl::na>
|
|
struct apply : is_digit<C> {};
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|