python/include/boost/python/bases.hpp at develop · boostorg/python · GitHub

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// Copyright David Abrahams 2002.

// 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 BASES_DWA2002321_HPP

# define BASES_DWA2002321_HPP

# include <boost/python/detail/prefix.hpp>

# include <boost/python/detail/type_list.hpp>

# include <boost/python/detail/type_traits.hpp>

# include <boost/mpl/if.hpp>

# include <boost/mpl/bool.hpp>

# include <boost/preprocessor/enum_params_with_a_default.hpp>

# include <boost/preprocessor/enum_params.hpp>

namespace boost { namespace python {

# define BOOST_PYTHON_BASE_PARAMS BOOST_PP_ENUM_PARAMS_Z(1, BOOST_PYTHON_MAX_BASES, Base)

// A type list for specifying bases

template < BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_PYTHON_MAX_BASES, typename Base, mpl::void_) >

struct bases : detail::type_list< BOOST_PYTHON_BASE_PARAMS >::type

{};

namespace detail

{

template <class T> struct specifies_bases

: mpl::false_

{

};

template < BOOST_PP_ENUM_PARAMS_Z(1, BOOST_PYTHON_MAX_BASES, class Base) >

struct specifies_bases< bases< BOOST_PYTHON_BASE_PARAMS > >

: mpl::true_

{

};

template <class T, class Prev = bases<> >

struct select_bases

: mpl::if_<

specifies_bases<T>

, T

, Prev

{

};

}

# undef BOOST_PYTHON_BASE_PARAMS

}} // namespace boost::python

#endif // BASES_DWA2002321_HPP

python/include/boost/python/bases.hpp at develop · boostorg/python · GitHub

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