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206 lines
4.8 KiB
206 lines
4.8 KiB
// Boost.Bimap |
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// |
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// Copyright (c) 2006-2007 Matias Capeletto |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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/// \file set_of.hpp |
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/// \brief Include support for set constrains for the bimap container |
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#ifndef BOOST_BIMAP_SET_OF_HPP |
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#define BOOST_BIMAP_SET_OF_HPP |
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#if defined(_MSC_VER) && (_MSC_VER>=1200) |
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#pragma once |
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#endif |
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#include <boost/config.hpp> |
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#include <boost/bimap/detail/user_interface_config.hpp> |
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#include <functional> |
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#include <boost/mpl/bool.hpp> |
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#include <boost/mpl/aux_/na.hpp> |
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#include <boost/concept_check.hpp> |
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#include <boost/bimap/detail/concept_tags.hpp> |
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#include <boost/bimap/detail/generate_index_binder.hpp> |
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#include <boost/bimap/detail/generate_view_binder.hpp> |
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#include <boost/bimap/detail/generate_relation_binder.hpp> |
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#include <boost/bimap/tags/support/value_type_of.hpp> |
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#include <boost/multi_index/ordered_index.hpp> |
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#include <boost/bimap/views/map_view.hpp> |
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#include <boost/bimap/views/set_view.hpp> |
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namespace boost { |
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namespace bimaps { |
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/// \brief Set Type Specification |
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/** |
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This struct is used to specify a set specification. |
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It is not a container, it is just a metaprogramming facility to |
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express the type of a set. Generally, this specification will |
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be used in other place to create a container. |
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It has the same syntax that an std::set instantiation, except |
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that the allocator cannot be specified. The rationale behind |
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this difference is that the allocator is not part of the set |
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type specification, rather it is a container configuration |
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parameter. |
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The first parameter is the type of the objects in the set, and |
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the second one is a Functor that compares them. |
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Bimap binding metafunctions can be used with this class in |
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the following way: |
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\code |
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using namespace support; |
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BOOST_STATIC_ASSERT( is_set_type_of< set_of<Type> >::value ) |
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BOOST_STATIC_ASSERT |
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( |
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is_same |
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< |
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set_of<Type,KeyCompare>::index_bind |
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< |
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KeyExtractor, |
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Tag |
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>::type, |
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ordered_unique< tag<Tag>, KeyExtractor, KeyCompare > |
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>::value |
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) |
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typedef bimap |
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< |
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set_of<Type>, RightKeyType |
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> bimap_with_left_type_as_set; |
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BOOST_STATIC_ASSERT |
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( |
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is_same |
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< |
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set_of<Type>::map_view_bind |
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< |
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member_at::left, |
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bimap_with_left_type_as_set |
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>::type, |
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map_view< member_at::left, bimap_with_left_type_as_set > |
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>::value |
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) |
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\endcode |
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See also set_of_relation. |
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**/ |
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template |
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< |
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class KeyType, |
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class KeyCompare = std::less< BOOST_DEDUCED_TYPENAME |
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::boost::bimaps::tags::support::value_type_of<KeyType>::type > |
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> |
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struct set_of : public ::boost::bimaps::detail::set_type_of_tag |
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{ |
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/// User type, can be tagged |
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typedef KeyType user_type; |
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/// Type of the object that will be stored in the set |
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typedef BOOST_DEDUCED_TYPENAME ::boost::bimaps::tags::support:: |
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value_type_of<user_type>::type value_type; |
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/// Functor that compare two keys |
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typedef KeyCompare key_compare; |
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struct lazy_concept_checked |
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{ |
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BOOST_CLASS_REQUIRE ( value_type, |
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boost, AssignableConcept ); |
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BOOST_CLASS_REQUIRE4( key_compare, bool, value_type, value_type, |
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boost, BinaryFunctionConcept ); |
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typedef set_of type; |
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}; |
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BOOST_BIMAP_GENERATE_INDEX_BINDER_1CP( |
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// binds to |
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multi_index::ordered_unique, |
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// with |
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key_compare |
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) |
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BOOST_BIMAP_GENERATE_MAP_VIEW_BINDER( |
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// binds to |
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views::map_view |
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) |
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BOOST_BIMAP_GENERATE_SET_VIEW_BINDER( |
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// binds to |
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views::set_view |
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) |
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typedef mpl::bool_<false> mutable_key; |
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}; |
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/// \brief Set Of Relation Specification |
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/** |
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This struct is similar to set_of but it is bind logically to a |
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relation. It is used in the bimap instantiation to specify the |
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desired type of the main view. This struct implements internally |
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a metafunction named bind_to that manages the quite complicated |
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task of finding the right type of the set for the relation. |
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\code |
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template<class Relation> |
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struct bind_to |
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{ |
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typedef -unspecified- type; |
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}; |
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\endcode |
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See also set_of, is_set_type_of_relation. |
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**/ |
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template< class KeyCompare = std::less< _relation > > |
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struct set_of_relation : public ::boost::bimaps::detail::set_type_of_relation_tag |
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{ |
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/// Functor that compare two keys |
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typedef KeyCompare key_compare; |
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BOOST_BIMAP_GENERATE_RELATION_BINDER_1CP( |
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// binds to |
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set_of, |
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// with |
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key_compare |
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) |
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typedef mpl::bool_<false> left_mutable_key; |
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typedef mpl::bool_<false> right_mutable_key; |
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}; |
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} // namespace bimaps |
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} // namespace boost |
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#endif // BOOST_BIMAP_SET_OF_HPP |
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