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enable_recursive.hpp - Hosted on DriveHQ Cloud IT Platform
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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\variant\detail\enable_recursive.hpp
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//----------------------------------------------------------------------------- // boost variant/detail/enable_recursive.hpp header file // See http://www.boost.org for updates, documentation, and revision history. //----------------------------------------------------------------------------- // // Copyright (c) 2003 // Eric Friedman // // 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) #ifndef BOOST_VARIANT_DETAIL_ENABLE_RECURSIVE_HPP #define BOOST_VARIANT_DETAIL_ENABLE_RECURSIVE_HPP #include "boost/variant/detail/enable_recursive_fwd.hpp" #include "boost/variant/variant_fwd.hpp" #if !defined(BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT) # include "boost/mpl/apply.hpp" # include "boost/mpl/eval_if.hpp" # include "boost/mpl/lambda.hpp" #endif #include "boost/variant/detail/substitute.hpp" #include "boost/mpl/aux_/config/ctps.hpp" #include "boost/mpl/bool_fwd.hpp" #include "boost/mpl/if.hpp" #include "boost/mpl/or.hpp" #include "boost/type_traits/is_pointer.hpp" #include "boost/type_traits/is_reference.hpp" #include "boost/type_traits/is_same.hpp" #include "boost/variant/recursive_wrapper.hpp" namespace boost { namespace detail { namespace variant { #if !defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE) # define BOOST_VARIANT_AUX_ENABLE_RECURSIVE_IMPL(T,Dest,Source) \ substitute< T , Dest , Source > \ /**/ #else // defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE) /////////////////////////////////////////////////////////////////////////////// // (detail) class template rebind1 // // Limited workaround in case 'substitute' metafunction unavailable. // template
struct rebind1 { private: typedef typename mpl::lambda< mpl::identity
>::type le_; public: typedef typename mpl::eval_if< is_same< le_, mpl::identity
> , le_ // identity
, mpl::apply1
>::type type; }; # define BOOST_VARIANT_AUX_ENABLE_RECURSIVE_IMPL(T,Dest,Source) \ rebind1< T , Dest > \ /**/ #endif // !defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE) /////////////////////////////////////////////////////////////////////////////// // (detail) metafunction enable_recursive // // See boost/variant/detail/enable_recursive_fwd.hpp for more information. // #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) template
struct enable_recursive : BOOST_VARIANT_AUX_ENABLE_RECURSIVE_IMPL( T, RecursiveVariant, ::boost::recursive_variant_ ) { }; template
struct enable_recursive< T,RecursiveVariant,mpl::false_ > { private: // helpers, for metafunction result (below) typedef typename BOOST_VARIANT_AUX_ENABLE_RECURSIVE_IMPL( T, RecursiveVariant, ::boost::recursive_variant_ )::type t_; public: // metafunction result // [Wrap with recursive_wrapper only if rebind really changed something:] typedef typename mpl::if_< mpl::or_< is_same< t_,T > , is_reference
, is_pointer
> , t_ , boost::recursive_wrapper
>::type type; }; #else // defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) template
struct enable_recursive { private: // helpers, for metafunction result (below) typedef typename BOOST_VARIANT_AUX_ENABLE_RECURSIVE_IMPL( T, RecursiveVariant, ::boost::recursive_variant_ )::type t_; public: // metafunction result // [Wrap with recursive_wrapper only if rebind really changed something:] typedef typename mpl::if_< mpl::or_< NoWrapper , is_same< t_,T > , is_reference
, is_pointer
> , t_ , boost::recursive_wrapper
>::type type; }; #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION workaround /////////////////////////////////////////////////////////////////////////////// // (detail) metafunction class quoted_enable_recursive // // Same behavior as enable_recursive metafunction (see above). // template
struct quoted_enable_recursive { template
struct apply : enable_recursive
{ }; }; }} // namespace detail::variant } // namespace boost #endif // BOOST_VARIANT_DETAIL_ENABLE_RECURSIVE_HPP
enable_recursive.hpp
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