mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-12-20 23:40:56 +01:00
229 lines
5.5 KiB
C++
Executable file
229 lines
5.5 KiB
C++
Executable file
|
|
#if !defined(BOOST_PP_IS_ITERATING)
|
|
|
|
///// header body
|
|
|
|
#ifndef BOOST_MPL_INHERIT_HPP_INCLUDED
|
|
#define BOOST_MPL_INHERIT_HPP_INCLUDED
|
|
|
|
// Copyright Aleksey Gurtovoy 2001-2004
|
|
//
|
|
// 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)
|
|
//
|
|
// See http://www.boost.org/libs/mpl for documentation.
|
|
|
|
// $Id$
|
|
// $Date$
|
|
// $Revision$
|
|
|
|
#if !defined(BOOST_MPL_PREPROCESSING_MODE)
|
|
# include <boost/mpl/empty_base.hpp>
|
|
# include <boost/mpl/aux_/na_spec.hpp>
|
|
# include <boost/mpl/aux_/lambda_support.hpp>
|
|
#endif
|
|
|
|
#include <boost/mpl/aux_/config/use_preprocessed.hpp>
|
|
|
|
#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
|
|
&& !defined(BOOST_MPL_PREPROCESSING_MODE)
|
|
|
|
# define BOOST_MPL_PREPROCESSED_HEADER inherit.hpp
|
|
# include <boost/mpl/aux_/include_preprocessed.hpp>
|
|
|
|
#else
|
|
|
|
# include <boost/mpl/limits/arity.hpp>
|
|
# include <boost/mpl/aux_/preprocessor/params.hpp>
|
|
# include <boost/mpl/aux_/preprocessor/default_params.hpp>
|
|
# include <boost/mpl/aux_/preprocessor/enum.hpp>
|
|
# include <boost/mpl/aux_/config/ctps.hpp>
|
|
# include <boost/mpl/aux_/config/dtp.hpp>
|
|
|
|
# include <boost/preprocessor/iterate.hpp>
|
|
# include <boost/preprocessor/dec.hpp>
|
|
# include <boost/preprocessor/cat.hpp>
|
|
|
|
namespace boost { namespace mpl {
|
|
|
|
// 'inherit<T1,T2,..,Tn>' metafunction; returns an unspecified class type
|
|
// produced by public derivation from all metafunction's parameters
|
|
// (T1,T2,..,Tn), except the parameters of 'empty_base' class type;
|
|
// regardless the position and number of 'empty_base' parameters in the
|
|
// metafunction's argument list, derivation from them is always a no-op;
|
|
// for instance:
|
|
// inherit<her>::type == her
|
|
// inherit<her,my>::type == struct unspecified : her, my {};
|
|
// inherit<empty_base,her>::type == her
|
|
// inherit<empty_base,her,empty_base,empty_base>::type == her
|
|
// inherit<her,empty_base,my>::type == struct unspecified : her, my {};
|
|
// inherit<empty_base,empty_base>::type == empty_base
|
|
|
|
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
|
|
|
|
template<
|
|
typename BOOST_MPL_AUX_NA_PARAM(T1)
|
|
, typename BOOST_MPL_AUX_NA_PARAM(T2)
|
|
>
|
|
struct inherit2
|
|
: T1, T2
|
|
{
|
|
typedef inherit2 type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(2, inherit2, (T1,T2))
|
|
};
|
|
|
|
template< typename T1 >
|
|
struct inherit2<T1,empty_base>
|
|
{
|
|
typedef T1 type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2, inherit2, (T1,empty_base))
|
|
};
|
|
|
|
template< typename T2 >
|
|
struct inherit2<empty_base,T2>
|
|
{
|
|
typedef T2 type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2, inherit2, (empty_base,T2))
|
|
};
|
|
|
|
// needed to disambiguate the previous two in case when both
|
|
// T1 and T2 == empty_base
|
|
template<>
|
|
struct inherit2<empty_base,empty_base>
|
|
{
|
|
typedef empty_base type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2, inherit2, (empty_base,empty_base))
|
|
};
|
|
|
|
#else
|
|
|
|
namespace aux {
|
|
|
|
template< bool C1, bool C2 >
|
|
struct inherit2_impl
|
|
{
|
|
template< typename Derived, typename T1, typename T2 > struct result_
|
|
: T1, T2
|
|
{
|
|
typedef Derived type_;
|
|
};
|
|
};
|
|
|
|
template<>
|
|
struct inherit2_impl<false,true>
|
|
{
|
|
template< typename Derived, typename T1, typename T2 > struct result_
|
|
: T1
|
|
{
|
|
typedef T1 type_;
|
|
};
|
|
};
|
|
|
|
template<>
|
|
struct inherit2_impl<true,false>
|
|
{
|
|
template< typename Derived, typename T1, typename T2 > struct result_
|
|
: T2
|
|
{
|
|
typedef T2 type_;
|
|
};
|
|
};
|
|
|
|
template<>
|
|
struct inherit2_impl<true,true>
|
|
{
|
|
template< typename Derived, typename T1, typename T2 > struct result_
|
|
{
|
|
typedef T1 type_;
|
|
};
|
|
};
|
|
|
|
} // namespace aux
|
|
|
|
template<
|
|
typename BOOST_MPL_AUX_NA_PARAM(T1)
|
|
, typename BOOST_MPL_AUX_NA_PARAM(T2)
|
|
>
|
|
struct inherit2
|
|
: aux::inherit2_impl<
|
|
is_empty_base<T1>::value
|
|
, is_empty_base<T2>::value
|
|
>::template result_< inherit2<T1,T2>,T1,T2 >
|
|
{
|
|
typedef typename inherit2::type_ type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(2, inherit2, (T1,T2))
|
|
};
|
|
|
|
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
BOOST_MPL_AUX_NA_SPEC(2, inherit2)
|
|
|
|
#define BOOST_PP_ITERATION_PARAMS_1 \
|
|
(3,(3, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/inherit.hpp>))
|
|
#include BOOST_PP_ITERATE()
|
|
|
|
}}
|
|
|
|
#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
|
|
#endif // BOOST_MPL_INHERIT_HPP_INCLUDED
|
|
|
|
///// iteration
|
|
|
|
#else
|
|
#define n_ BOOST_PP_FRAME_ITERATION(1)
|
|
|
|
template<
|
|
BOOST_MPL_PP_DEFAULT_PARAMS(n_, typename T, na)
|
|
>
|
|
struct BOOST_PP_CAT(inherit,n_)
|
|
: inherit2<
|
|
typename BOOST_PP_CAT(inherit,BOOST_PP_DEC(n_))<
|
|
BOOST_MPL_PP_PARAMS(BOOST_PP_DEC(n_), T)
|
|
>::type
|
|
, BOOST_PP_CAT(T,n_)
|
|
>
|
|
{
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(
|
|
n_
|
|
, BOOST_PP_CAT(inherit,n_)
|
|
, (BOOST_MPL_PP_PARAMS(n_, T))
|
|
)
|
|
};
|
|
|
|
BOOST_MPL_AUX_NA_SPEC(n_, BOOST_PP_CAT(inherit,n_))
|
|
|
|
#if n_ == BOOST_MPL_LIMIT_METAFUNCTION_ARITY
|
|
/// primary template
|
|
template<
|
|
BOOST_MPL_PP_DEFAULT_PARAMS(n_, typename T, empty_base)
|
|
>
|
|
struct inherit
|
|
: BOOST_PP_CAT(inherit,n_)<BOOST_MPL_PP_PARAMS(n_, T)>
|
|
{
|
|
};
|
|
|
|
// 'na' specialization
|
|
template<>
|
|
struct inherit< BOOST_MPL_PP_ENUM(5, na) >
|
|
{
|
|
template<
|
|
#if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
|
|
BOOST_MPL_PP_DEFAULT_PARAMS(n_, typename T, empty_base)
|
|
#else
|
|
BOOST_MPL_PP_PARAMS(n_, typename T)
|
|
#endif
|
|
>
|
|
struct apply
|
|
: inherit< BOOST_MPL_PP_PARAMS(n_, T) >
|
|
{
|
|
};
|
|
};
|
|
|
|
BOOST_MPL_AUX_NA_SPEC_LAMBDA(n_, inherit)
|
|
BOOST_MPL_AUX_NA_SPEC_ARITY(n_, inherit)
|
|
BOOST_MPL_AUX_NA_SPEC_TEMPLATE_ARITY(n_, n_, inherit)
|
|
#endif
|
|
|
|
#undef n_
|
|
#endif // BOOST_PP_IS_ITERATING
|