Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2005-2012 Joel de Guzman
Chris@16:     Copyright (c) 2005-2006 Dan Marsden
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_FUSION_DEQUE_DETAIL_KEYED_ELEMENT_26112006_1330)
Chris@16: #define BOOST_FUSION_DEQUE_DETAIL_KEYED_ELEMENT_26112006_1330
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/support/detail/access.hpp>
Chris@16: #include <boost/fusion/iterator/deref.hpp>
Chris@16: #include <boost/fusion/iterator/next.hpp>
Chris@16: 
Chris@16: namespace boost { namespace fusion
Chris@16: {
Chris@16:     struct fusion_sequence_tag;
Chris@16: }}
Chris@16: 
Chris@16: namespace boost { namespace fusion { namespace detail
Chris@16: {
Chris@16:     struct nil_keyed_element
Chris@16:     {
Chris@16:         typedef fusion_sequence_tag tag;
Chris@101:         BOOST_FUSION_GPU_ENABLED
Chris@16:         void get();
Chris@16: 
Chris@16:         template<typename It>
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         static nil_keyed_element
Chris@16:         from_iterator(It const&)
Chris@16:         {
Chris@16:             return nil_keyed_element();
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     template <typename Key, typename Value, typename Rest>
Chris@16:     struct keyed_element : Rest
Chris@16:     {
Chris@16:         typedef Rest base;
Chris@16:         typedef fusion_sequence_tag tag;
Chris@16:         using Rest::get;
Chris@16: 
Chris@16:         template <typename It>
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         static keyed_element
Chris@16:         from_iterator(It const& it)
Chris@16:         {
Chris@16:             return keyed_element(
Chris@16:                 *it, base::from_iterator(fusion::next(it)));
Chris@16:         }
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element(keyed_element const& rhs)
Chris@16:           : Rest(rhs.get_base()), value_(rhs.value_)
Chris@16:         {}
Chris@16: 
Chris@16: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element(keyed_element&& rhs)
Chris@101:           : Rest(BOOST_FUSION_FWD_ELEM(Rest, rhs.forward_base()))
Chris@101:           , value_(BOOST_FUSION_FWD_ELEM(Value, rhs.value_))
Chris@16:         {}
Chris@16: #endif
Chris@16: 
Chris@16:         template <typename U, typename Rst>
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:         keyed_element(keyed_element<Key, U, Rst> const& rhs
Chris@101:           , typename enable_if<is_convertible<U, Value> >::type* = 0)
Chris@16:           : Rest(rhs.get_base()), value_(rhs.value_)
Chris@16:         {}
Chris@16: 
Chris@16: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@16: #endif
Chris@16: 
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:         Rest& get_base() BOOST_NOEXCEPT
Chris@16:         {
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:         Rest const& get_base() const BOOST_NOEXCEPT
Chris@16:         {
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@16: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:         Rest&& forward_base() BOOST_NOEXCEPT
Chris@16:         {
Chris@101:             return BOOST_FUSION_FWD_ELEM(Rest, *static_cast<Rest*>(this));
Chris@16:         }
Chris@16: #endif
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         typename cref_result<Value>::type get(Key) const
Chris@16:         {
Chris@16:             return value_;
Chris@16:         }
Chris@16: 
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         typename ref_result<Value>::type get(Key)
Chris@16:         {
Chris@16:             return value_;
Chris@16:         }
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element(
Chris@16:             typename detail::call_param<Value>::type value
Chris@16:           , Rest const& rest)
Chris@16:             : Rest(rest), value_(value)
Chris@16:         {}
Chris@16: 
Chris@16: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element(Value&& value, Rest&& rest)
Chris@101:             : Rest(BOOST_FUSION_FWD_ELEM(Rest, rest))
Chris@101:             , value_(BOOST_FUSION_FWD_ELEM(Value, value))
Chris@16:         {}
Chris@16: #endif
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element()
Chris@16:             : Rest(), value_()
Chris@16:         {}
Chris@16: 
Chris@16:         template<typename U, typename Rst>
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element& operator=(keyed_element<Key, U, Rst> const& rhs)
Chris@16:         {
Chris@16:             base::operator=(static_cast<Rst const&>(rhs)); // cast for msvc-7.1
Chris@16:             value_ = rhs.value_;
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element& operator=(keyed_element const& rhs)
Chris@16:         {
Chris@16:             base::operator=(rhs);
Chris@16:             value_ = rhs.value_;
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@16: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         keyed_element& operator=(keyed_element&& rhs)
Chris@16:         {
Chris@16:             base::operator=(std::forward<keyed_element>(rhs));
Chris@101:             value_ = BOOST_FUSION_FWD_ELEM(Value, rhs.value_);
Chris@16:             return *this;
Chris@16:         }
Chris@16: #endif
Chris@16: 
Chris@16:         Value value_;
Chris@16:     };
Chris@16: 
Chris@16:     template<typename Elem, typename Key>
Chris@16:     struct keyed_element_value_at
Chris@16:       : keyed_element_value_at<typename Elem::base, Key>
Chris@16:     {};
Chris@16: 
Chris@16:     template<typename Key, typename Value, typename Rest>
Chris@16:     struct keyed_element_value_at<keyed_element<Key, Value, Rest>, Key>
Chris@16:     {
Chris@16:         typedef Value type;
Chris@16:     };
Chris@16: }}}
Chris@16: 
Chris@16: #endif