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// Copyright David Abrahams, Daniel Wallin 2003.
// 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_PARAMETER_AUX_PACK_SATISFIES_HPP
#define BOOST_PARAMETER_AUX_PACK_SATISFIES_HPP
#include <boost/parameter/config.hpp>
#if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
#include <boost/parameter/aux_/arg_list.hpp>
#include <boost/parameter/aux_/augment_predicate.hpp>
#include <boost/parameter/aux_/void.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/apply_wrap.hpp>
#include <boost/type_traits/is_same.hpp>
#else // !BOOST_WORKAROUND(BOOST_MSVC, == 1310)
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
#include <boost/mp11/integral.hpp>
#else
#include <boost/mpl/bool.hpp>
#endif
#include <boost/parameter/aux_/yesno.hpp>
#include <boost/parameter/aux_/preprocessor/nullptr.hpp>
#endif // MSVC-7.1 workarounds needed
namespace boost { namespace parameter { namespace aux {
#if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
template <typename ArgList, typename ParameterRequirements, typename Bound>
struct satisfies_impl
: ::boost::parameter::aux::augment_predicate<
typename ParameterRequirements::predicate
, typename ArgList::reference
, typename ArgList::key_type
, Bound
, ArgList
>
{
};
#endif
// Returns mpl::true_ iff the given ParameterRequirements are satisfied by
// ArgList.
template <typename ArgList, typename ParameterRequirements>
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
using satisfies = ::boost::mp11::mp_bool<
sizeof(
::boost::parameter::aux::to_yesno(
ArgList::satisfies(
static_cast<ParameterRequirements*>(
BOOST_PARAMETER_AUX_PP_NULLPTR
)
, static_cast<ArgList*>(BOOST_PARAMETER_AUX_PP_NULLPTR)
)
)
) == sizeof(::boost::parameter::aux::yes_tag)
>;
#else // !defined(BOOST_PARAMETER_CAN_USE_MP11)
class satisfies
{
#if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
// VC7.1 can't handle the sizeof() implementation below,
// so we use this instead.
typedef typename ::boost::mpl::apply_wrap3<
typename ArgList::binding
, typename ParameterRequirements::keyword
, ::boost::parameter::void_
, ::boost::mpl::false_
>::type _bound;
public:
typedef typename ::boost::mpl::eval_if<
::boost::is_same<_bound,::boost::parameter::void_>
, typename ParameterRequirements::has_default
, ::boost::mpl::eval_if<
::boost::is_same<
ArgList
, ::boost::parameter::aux::empty_arg_list
>
, ::boost::mpl::false_
, ::boost::parameter::aux::satisfies_impl<
ArgList
, ParameterRequirements
, _bound
>
>
>::type type;
#else // !BOOST_WORKAROUND(BOOST_MSVC, == 1310)
BOOST_STATIC_CONSTANT(
bool, _value = (
sizeof(
::boost::parameter::aux::to_yesno(
ArgList::satisfies(
static_cast<ParameterRequirements*>(
BOOST_PARAMETER_AUX_PP_NULLPTR
)
, static_cast<ArgList*>(BOOST_PARAMETER_AUX_PP_NULLPTR)
)
)
) == sizeof(::boost::parameter::aux::yes_tag)
)
);
public:
typedef ::boost::mpl::bool_<
::boost::parameter::aux
::satisfies<ArgList,ParameterRequirements>::_value
> type;
#endif // MSVC-7.1 workarounds needed
};
#endif // BOOST_PARAMETER_CAN_USE_MP11
}}} // namespace boost::parameter::aux
#include <boost/parameter/aux_/pack/as_parameter_requirements.hpp>
namespace boost { namespace parameter { namespace aux {
// Returns mpl::true_ if the requirements of the given ParameterSpec
// are satisfied by ArgList.
template <typename ArgList, typename ParameterSpec>
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
using satisfies_requirements_of = ::boost::parameter::aux::satisfies<
ArgList
, typename ::boost::parameter::aux
::as_parameter_requirements<ParameterSpec>::type
>;
#else
struct satisfies_requirements_of
: ::boost::parameter::aux::satisfies<
ArgList
, typename ::boost::parameter::aux
::as_parameter_requirements<ParameterSpec>::type
>::type
{
};
#endif // BOOST_PARAMETER_CAN_USE_MP11
}}} // namespace boost::parameter::aux
#endif // include guard
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