| // Boost.Bimap |
| // |
| // Copyright (c) 2006-2007 Matias Capeletto |
| // |
| // 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) |
| |
| /// \file detail/manage_additional_parameters.hpp |
| /// \brief Utility class to extract the additional parameters from the template parameters. |
| |
| #ifndef BOOST_BIMAP_DETAIL_MANAGE_ADDITIONAL_PARAMETERS_HPP |
| #define BOOST_BIMAP_DETAIL_MANAGE_ADDITIONAL_PARAMETERS_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER>=1200) |
| #pragma once |
| #endif |
| |
| #include <boost/config.hpp> |
| |
| #include <memory> |
| |
| // Boost.MPL |
| #include <boost/mpl/bool.hpp> |
| #include <boost/mpl/if.hpp> |
| #include <boost/mpl/aux_/na.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| |
| #include <boost/bimap/detail/is_set_type_of.hpp> |
| |
| namespace boost { |
| namespace bimaps { |
| |
| template< class Type > |
| struct with_info |
| { |
| typedef Type value_type; |
| }; |
| |
| namespace detail { |
| |
| /// \brief Metafunction to check if a given type is a data_hook specification. |
| |
| template< class Type > |
| struct is_with_info : ::boost::mpl::false_ {}; |
| |
| template< class ValueType > |
| struct is_with_info< with_info<ValueType> > : ::boost::mpl::true_ {}; |
| |
| /** \struct boost::bimaps::detail::manage_additional_parameters |
| \brief Utility class to extract the additional parameters from the template parameters. |
| |
| \code |
| template< class AP1, class AP2, class AP3 > |
| struct manage_additional_parameters |
| { |
| struct parameters |
| { |
| typedef -unspecified- set_type_of_relation; |
| typedef -unspecified- data_hook; |
| typedef -unspecified- allocator; |
| }; |
| |
| typedef parameters type; |
| }; |
| \endcode |
| |
| See also bimap, bimap_core. |
| **/ |
| |
| #ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES |
| |
| template< class AP1, class AP2, class AP3 > |
| struct manage_additional_parameters |
| { |
| // (1) manage_additional_parameters< |
| // not_specified,not_specified,not_specified> |
| // |
| // set_type_of_relation: based on the left key type |
| // info_hook: no additional info |
| // allocator: default allocator |
| |
| struct case_NNN |
| { |
| typedef left_based set_type_of_relation; |
| typedef std::allocator<void> allocator; |
| typedef ::boost::mpl::na additional_info; |
| }; |
| |
| // (2) manage_additional_parameters<Allocator,not_specified,not_specified> |
| // |
| // set_type_of_relation: based on the left key type |
| // info_hook: no additional info |
| // allocator: Allocator |
| |
| struct case_ANN |
| { |
| typedef left_based set_type_of_relation; |
| typedef AP1 allocator; |
| typedef ::boost::mpl::na additional_info; |
| }; |
| |
| // (3) manage_additional_parameters< |
| // SetOfRelationType,not_specified,not_specified> |
| // |
| // set_type_of_relation: SetTypeOfRelation |
| // info_hook: no additional info |
| // allocator: default allocator |
| |
| struct case_SNN |
| { |
| typedef AP1 set_type_of_relation; |
| typedef std::allocator<void> allocator; |
| typedef ::boost::mpl::na additional_info; |
| }; |
| |
| // (4) manage_additional_parameters< |
| // SetTypeOfRelation,Allocator,not_specified> |
| // |
| // set_type_of_relation: SetTypeOfRelation |
| // info_hook: no additional info |
| // allocator: Allocator |
| |
| struct case_SAN |
| { |
| typedef AP1 set_type_of_relation; |
| typedef AP2 allocator; |
| typedef ::boost::mpl::na additional_info; |
| }; |
| |
| // (5) manage_additional_parameters<InfoToHook,not_specified,not_specified> |
| // |
| // set_type_of_relation: based on the left key type |
| // info_hook: InfoToHook |
| // allocator: default allocator |
| |
| struct case_HNN |
| { |
| typedef left_based set_type_of_relation; |
| typedef std::allocator<void> allocator; |
| typedef BOOST_DEDUCED_TYPENAME AP1::value_type additional_info; |
| }; |
| |
| // (6) manage_additional_parameters< |
| // SetTypeOfRelation,InfoToHook,not_specified> |
| // |
| // set_type_of_relation: SetTypeOfRelation |
| // info_hook: InfoToHook |
| // allocator: default allocator |
| |
| struct case_SHN |
| { |
| typedef AP1 set_type_of_relation; |
| typedef std::allocator<void> allocator; |
| typedef BOOST_DEDUCED_TYPENAME AP2::value_type additional_info; |
| }; |
| |
| // (7) manage_additional_parameters< |
| // DataToHook,Allocator,not_specified> |
| // |
| // set_type_of_relation: SetTypeOfRelation |
| // info_hook: InfoToHook |
| // allocator: default allocator |
| |
| struct case_HAN |
| { |
| typedef left_based set_type_of_relation; |
| typedef AP2 allocator; |
| typedef BOOST_DEDUCED_TYPENAME AP1::value_type additional_info; |
| }; |
| |
| // (8) manage_additional_parameters< |
| // SetTypeOfRelation,DataToHook,Allocator> |
| // |
| // set_type_of_relation: SetTypeOfRelation |
| // info_hook: InfoToHook |
| // allocator: Allocator |
| |
| struct case_SHA |
| { |
| typedef AP1 set_type_of_relation; |
| typedef AP2 allocator; |
| typedef BOOST_DEDUCED_TYPENAME AP2::value_type additional_info; |
| }; |
| |
| // Some annidated mpl::if_ and we are done! |
| |
| typedef BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| ::boost::mpl::is_na<AP1>, |
| case_NNN, // (1) |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| ::boost::mpl::is_na<AP2>, |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| is_set_type_of_relation<AP1>, |
| case_SNN, // (3) |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| is_with_info<AP1>, |
| case_HNN, // (5) |
| case_ANN // (2) |
| |
| >::type |
| |
| >::type, |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| ::boost::mpl::is_na<AP3>, |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| is_with_info<AP1>, |
| case_HAN, // (7) |
| BOOST_DEDUCED_TYPENAME mpl::if_ |
| < |
| is_with_info<AP2>, |
| case_SHN, // (6) |
| case_SAN // (4) |
| |
| >::type |
| |
| >::type, |
| |
| case_SHA // (8) |
| |
| >::type |
| |
| >::type |
| |
| >::type type; |
| |
| }; |
| |
| #endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES |
| |
| } // namespace detail |
| } // namespace bimaps |
| } // namespace boost |
| |
| |
| #endif // BOOST_BIMAP_DETAIL_MANAGE_ADDITIONAL_PARAMETERS_HPP |
| |