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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/multi_index/detail/ord_index_args.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/multi_index/detail/ord_index_args.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/multi_index/detail/ord_index_args.hpp b/src/third_party/boost-1.69.0/boost/multi_index/detail/ord_index_args.hpp new file mode 100644 index 00000000000..3e2641f2f4d --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/multi_index/detail/ord_index_args.hpp @@ -0,0 +1,83 @@ +/* Copyright 2003-2013 Joaquin M Lopez Munoz. + * 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/multi_index for library home page. + */ + +#ifndef BOOST_MULTI_INDEX_DETAIL_ORD_INDEX_ARGS_HPP +#define BOOST_MULTI_INDEX_DETAIL_ORD_INDEX_ARGS_HPP + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ +#include <boost/mpl/aux_/na.hpp> +#include <boost/mpl/eval_if.hpp> +#include <boost/mpl/identity.hpp> +#include <boost/mpl/if.hpp> +#include <boost/multi_index/tag.hpp> +#include <boost/static_assert.hpp> +#include <boost/type_traits/is_same.hpp> +#include <functional> + +namespace boost{ + +namespace multi_index{ + +namespace detail{ + +/* Oredered index specifiers can be instantiated in two forms: + * + * (ordered_unique|ordered_non_unique)< + * KeyFromValue,Compare=std::less<KeyFromValue::result_type> > + * (ordered_unique|ordered_non_unique)< + * TagList,KeyFromValue,Compare=std::less<KeyFromValue::result_type> > + * + * index_args implements the machinery to accept this argument-dependent + * polymorphism. + */ + +template<typename KeyFromValue> +struct index_args_default_compare +{ + typedef std::less<typename KeyFromValue::result_type> type; +}; + +template<typename Arg1,typename Arg2,typename Arg3> +struct ordered_index_args +{ + typedef is_tag<Arg1> full_form; + + typedef typename mpl::if_< + full_form, + Arg1, + tag< > >::type tag_list_type; + typedef typename mpl::if_< + full_form, + Arg2, + Arg1>::type key_from_value_type; + typedef typename mpl::if_< + full_form, + Arg3, + Arg2>::type supplied_compare_type; + typedef typename mpl::eval_if< + mpl::is_na<supplied_compare_type>, + index_args_default_compare<key_from_value_type>, + mpl::identity<supplied_compare_type> + >::type compare_type; + + BOOST_STATIC_ASSERT(is_tag<tag_list_type>::value); + BOOST_STATIC_ASSERT(!mpl::is_na<key_from_value_type>::value); + BOOST_STATIC_ASSERT(!mpl::is_na<compare_type>::value); +}; + +} /* namespace multi_index::detail */ + +} /* namespace multi_index */ + +} /* namespace boost */ + +#endif |