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[SVN r13256]
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‎include/boost/python/args.hpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef ARGS_DWA2002323_HPP
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# define ARGS_DWA2002323_HPP
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# include <boost/mpl/type_list.hpp>
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namespace boost { namespace python {
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// A type list for specifying arguments
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template < BOOST_MPL_LIST_DEFAULT_PARAMETERS(typename A, ::boost::mpl::null_argument) >
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struct args : ::boost::mpl::type_list< BOOST_MPL_LIST_PARAMETERS(A) >::type
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{};
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}} // namespace boost::python
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#endif // ARGS_DWA2002323_HPP

‎include/boost/python/bases.hpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef BASES_DWA2002321_HPP
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# define BASES_DWA2002321_HPP
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# include <boost/type_traits/object_traits.hpp>
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# include <boost/mpl/type_list.hpp>
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# include <boost/mpl/select_type.hpp>
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# include <boost/mpl/identity/identity.hpp>
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namespace boost { namespace python {
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// A type list for specifying bases
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template < BOOST_MPL_LIST_DEFAULT_PARAMETERS(typename B, ::boost::mpl::null_argument) >
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struct bases : ::boost::mpl::type_list< BOOST_MPL_LIST_PARAMETERS(B) >::type
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{};
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namespace detail
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{
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# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template <class T> struct specifies_bases
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{
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BOOST_STATIC_CONSTANT(bool, value = false);
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};
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template < BOOST_MPL_LIST_PARAMETERS(class B) >
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struct specifies_bases< bases< BOOST_MPL_LIST_PARAMETERS(B) > >
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{
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BOOST_STATIC_CONSTANT(bool, value = true);
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};
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# else
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template < BOOST_MPL_LIST_PARAMETERS(class B) >
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static char is_bases_helper(bases< BOOST_MPL_LIST_PARAMETERS(B) > const&);
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static char (& is_bases_helper(...) )[256];
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template <class T> struct specifies_bases
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{
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private:
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static typename add_reference<T>::type make();
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BOOST_STATIC_CONSTANT(bool, non_ref = !is_reference<T>::value);
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public:
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BOOST_STATIC_CONSTANT(bool, value = non_ref & (sizeof(is_bases_helper(make())) == 1));
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};
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# endif
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template <class T, class Prev = bases<> >
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struct select_bases
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: mpl::select_type<
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specifies_bases<T>::value
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, T
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, Prev
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>
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{
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};
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}
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}} // namespace boost::python
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#endif // BASES_DWA2002321_HPP

‎include/boost/python/detail/if_else.hpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef IF_ELSE_DWA2002322_HPP
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# define IF_ELSE_DWA2002322_HPP
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# include <boost/config.hpp>
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namespace boost { namespace python { namespace detail {
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template <class T> struct elif_selected;
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template <class T>
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struct if_selected
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{
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template <bool b>
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struct elif : elif_selected<T>
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{
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};
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template <class U>
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struct else_
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{
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typedef T type;
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};
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};
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# if defined(BOOST_MSVC) && (BOOST_MSVC == 1300)
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namespace msvc70_aux {
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template< bool > struct inherit_from
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{
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template< typename T > struct result
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{
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typedef T type;
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};
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};
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template<> struct inherit_from<true>
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{
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template< typename T > struct result
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{
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struct type {};
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};
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};
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template< typename T >
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struct never_true
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{
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BOOST_STATIC_CONSTANT(bool, value = false);
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};
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} // namespace msvc70_aux
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#endif // # if defined(BOOST_MSVC) && (BOOST_MSVC == 1300)
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template <class T>
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struct elif_selected
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{
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# if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1300 || defined(__MWERKS__) && __MWERKS__ <= 0x2407)
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template <class U> class then;
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# elif defined(BOOST_MSVC) && (BOOST_MSVC == 1300)
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template <class U>
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struct then : msvc70_aux::inherit_from< msvc70_aux::never_true<U>::value >
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::template result< if_selected<T> >::type
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{
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};
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# else
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template <class U>
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struct then : if_selected<T>
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{
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};
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# endif
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};
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# if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1300 || defined(__MWERKS__) && __MWERKS__ <= 0x2407)
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template <class T>
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template <class U>
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class elif_selected<T>::then : public if_selected<T>
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{
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};
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# endif
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template <bool b> struct if_
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{
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template <class T>
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struct then : if_selected<T>
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{
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};
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};
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struct if_unselected
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{
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template <bool b> struct elif : if_<b>
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{
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};
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template <class U>
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struct else_
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{
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typedef U type;
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};
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};
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template <>
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struct if_<false>
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{
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template <class T>
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struct then : if_unselected
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{
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};
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};
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}}} // namespace boost::python::detail
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#endif // IF_ELSE_DWA2002322_HPP

‎include/boost/python/detail/pointee.hpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef POINTEE_DWA2002323_HPP
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# define POINTEE_DWA2002323_HPP
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# include <boost/type_traits/object_traits.hpp>
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namespace boost { namespace python { namespace detail {
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template <bool is_ptr = true>
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struct pointee_impl
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{
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template <class T> struct apply : remove_pointer<T> {};
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};
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template <>
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struct pointee_impl<false>
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{
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template <class T> struct apply
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{
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typedef typename T::element_type type;
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};
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};
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template <class T>
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struct pointee
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: pointee_impl<is_pointer<T>::value>::template apply<T>
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{
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};
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}}} // namespace boost::python::detail
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#endif // POINTEE_DWA2002323_HPP

‎include/boost/python/has_back_reference.hpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef HAS_BACK_REFERENCE_DWA2002323_HPP
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# define HAS_BACK_REFERENCE_DWA2002323_HPP
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namespace boost { namespace python {
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// traits class which users can specialize to indicate that a class
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// contains a back-reference to its owning PyObject*
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template <class T>
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struct has_back_reference
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{
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BOOST_STATIC_CONSTANT(bool, value = false);
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};
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}} // namespace boost::python
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#endif // HAS_BACK_REFERENCE_DWA2002323_HPP

‎test/bases.cpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#include <boost/python/bases.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/type_traits/same_traits.hpp>
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struct A;
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struct B;
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template <class X, class Y, class Z>
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struct choose_bases
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: boost::python::detail::select_bases<
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X
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, typename boost::python::detail::select_bases<
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Y
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, typename boost::python::detail::select_bases<Z>::type
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>::type>
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{
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};
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int main()
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{
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BOOST_STATIC_ASSERT((boost::python::detail::specifies_bases<
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boost::python::bases<A,B> >::value));
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BOOST_STATIC_ASSERT((!boost::python::detail::specifies_bases<
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boost::python::bases<A,B>& >::value));
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BOOST_STATIC_ASSERT((!boost::python::detail::specifies_bases<
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void* >::value));
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BOOST_STATIC_ASSERT((!boost::python::detail::specifies_bases<
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int >::value));
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BOOST_STATIC_ASSERT((!boost::python::detail::specifies_bases<
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int[5] >::value));
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typedef boost::python::detail::select_bases<
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int
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, boost::python::detail::select_bases<char*>::type > collected1;
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BOOST_STATIC_ASSERT((boost::is_same<collected1::type,boost::python::bases<> >::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose_bases<int,char*,long>::type,boost::python::bases<> >::value));
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typedef boost::python::detail::select_bases<
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int
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, boost::python::detail::select_bases<
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boost::python::bases<A,B>
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, boost::python::detail::select_bases<
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A
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>::type
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>::type
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> collected2;
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BOOST_STATIC_ASSERT((boost::is_same<collected2::type,boost::python::bases<A,B> >::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose_bases<int,boost::python::bases<A,B>,long>::type,boost::python::bases<A,B> >::value));
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return 0;
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}

‎test/if_else.cpp‎

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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#include <boost/static_assert.hpp>
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#include <boost/python/detail/if_else.hpp>
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#include <boost/type_traits/same_traits.hpp>
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typedef char c1;
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typedef char c2[2];
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typedef char c3[3];
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typedef char c4[4];
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template <unsigned size>
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struct choose
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{
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#if 1
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typedef typename boost::python::detail::if_<
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(sizeof(c1) == size)
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>::template then<
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c1
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>::template elif<
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(sizeof(c2) == size)
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>::template then<
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c2
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>::template elif<
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(sizeof(c3) == size)
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>::template then<
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c3
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>::template elif<
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(sizeof(c4) == size)
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>::template then<
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c4
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>::template else_<void*>::type type;
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#else
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typedef typename boost::python::detail::if_<
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(sizeof(c1) == size)
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, c1
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>::template elif<
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(sizeof(c2) == size)
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, c2
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>::template elif<
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(sizeof(c3) == size)
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, c3
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>::template elif<
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(sizeof(c4) == size)
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, c4
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>::template else_<void*>::type type;
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#endif
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};
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int main()
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{
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BOOST_STATIC_ASSERT((boost::is_same<choose<1>::type,c1>::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose<2>::type,c2>::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose<3>::type,c3>::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose<4>::type,c4>::value));
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BOOST_STATIC_ASSERT((boost::is_same<choose<5>::type,void*>::value));
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return 0;
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}

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