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/usr/include/boost/compute/types/tuple.hpp
(8803B)
//---------------------------------------------------------------------------// // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> // // 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://boostorg.github.com/compute for more information. //---------------------------------------------------------------------------// #ifndef BOOST_COMPUTE_TYPES_TUPLE_HPP #define BOOST_COMPUTE_TYPES_TUPLE_HPP #include <string> #include <utility> #include <boost/preprocessor/enum.hpp> #include <boost/preprocessor/expr_if.hpp> #include <boost/preprocessor/repetition.hpp> #include <boost/tuple/tuple.hpp> #include <boost/compute/config.hpp> #include <boost/compute/functional/get.hpp> #include <boost/compute/type_traits/type_name.hpp> #include <boost/compute/detail/meta_kernel.hpp> #ifndef BOOST_COMPUTE_NO_STD_TUPLE #include <tuple> #endif namespace boost { namespace compute { namespace detail { // meta_kernel operators for boost::tuple literals #define BOOST_COMPUTE_PRINT_ELEM(z, n, unused) \ BOOST_PP_EXPR_IF(n, << ", ") \ << kernel.make_lit(boost::get<n>(x)) #define BOOST_COMPUTE_PRINT_TUPLE(z, n, unused) \ template<BOOST_PP_ENUM_PARAMS(n, class T)> \ inline meta_kernel& \ operator<<(meta_kernel &kernel, \ const boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> &x) \ { \ return kernel \ << "(" \ << type_name<boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> >() \ << ")" \ << "{" \ BOOST_PP_REPEAT(n, BOOST_COMPUTE_PRINT_ELEM, ~) \ << "}"; \ } BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_PRINT_TUPLE, ~) #undef BOOST_COMPUTE_PRINT_TUPLE #undef BOOST_COMPUTE_PRINT_ELEM // inject_type() specializations for boost::tuple #define BOOST_COMPUTE_INJECT_TYPE(z, n, unused) \ kernel.inject_type<T ## n>(); #define BOOST_COMPUTE_INJECT_DECL(z, n, unused) \ << " " << type_name<T ## n>() << " v" #n ";\n" #define BOOST_COMPUTE_INJECT_IMPL(z, n, unused) \ template<BOOST_PP_ENUM_PARAMS(n, class T)> \ struct inject_type_impl<boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> > \ { \ void operator()(meta_kernel &kernel) \ { \ typedef boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> tuple_type; \ BOOST_PP_REPEAT(n, BOOST_COMPUTE_INJECT_TYPE, ~) \ std::stringstream declaration; \ declaration << "typedef struct {\n" \ BOOST_PP_REPEAT(n, BOOST_COMPUTE_INJECT_DECL, ~) \ << "} " << type_name<tuple_type>() << ";\n"; \ kernel.add_type_declaration<tuple_type>(declaration.str()); \ } \ }; BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_INJECT_IMPL, ~) #undef BOOST_COMPUTE_INJECT_IMPL #undef BOOST_COMPUTE_INJECT_DECL #undef BOOST_COMPUTE_INJECT_TYPE #ifdef BOOST_COMPUTE_NO_VARIADIC_TEMPLATES // type_name() specializations for boost::tuple (without variadic templates) #define BOOST_COMPUTE_PRINT_TYPE(z, n, unused) \ + type_name<T ## n>() + "_" #define BOOST_COMPUTE_PRINT_TYPE_NAME(z, n, unused) \ template<BOOST_PP_ENUM_PARAMS(n, class T)> \ struct type_name_trait<boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> > \ { \ static const char* value() \ { \ static std::string name = \ std::string("boost_tuple_") \ BOOST_PP_REPEAT(n, BOOST_COMPUTE_PRINT_TYPE, ~) \ "t"; \ return name.c_str(); \ } \ }; BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_PRINT_TYPE_NAME, ~) #undef BOOST_COMPUTE_PRINT_TYPE_NAME #undef BOOST_COMPUTE_PRINT_TYPE #else template<size_t N, class T, class... Rest> struct write_tuple_type_names { void operator()(std::ostream &os) { os << type_name<T>() << "_"; write_tuple_type_names<N-1, Rest...>()(os); } }; template<class T, class... Rest> struct write_tuple_type_names<1, T, Rest...> { void operator()(std::ostream &os) { os << type_name<T>(); } }; // type_name<> specialization for boost::tuple<...> (with variadic templates) template<class... T> struct type_name_trait<boost::tuple<T...>> { static const char* value() { static std::string str = make_type_name(); return str.c_str(); } static std::string make_type_name() { typedef typename boost::tuple<T...> tuple_type; std::stringstream s; s << "boost_tuple_"; write_tuple_type_names< boost::tuples::length<tuple_type>::value, T... >()(s); s << "_t"; return s.str(); } }; #endif // BOOST_COMPUTE_NO_VARIADIC_TEMPLATES #ifndef BOOST_COMPUTE_NO_STD_TUPLE // type_name<> specialization for std::tuple<T...> template<class... T> struct type_name_trait<std::tuple<T...>> { static const char* value() { static std::string str = make_type_name(); return str.c_str(); } static std::string make_type_name() { typedef typename std::tuple<T...> tuple_type; std::stringstream s; s << "std_tuple_"; write_tuple_type_names< std::tuple_size<tuple_type>::value, T... >()(s); s << "_t"; return s.str(); } }; #endif // BOOST_COMPUTE_NO_STD_TUPLE // get<N>() result type specialization for boost::tuple<> #define BOOST_COMPUTE_GET_RESULT_TYPE(z, n, unused) \ template<size_t N, BOOST_PP_ENUM_PARAMS(n, class T)> \ struct get_result_type<N, boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> > \ { \ typedef typename boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> T; \ typedef typename boost::tuples::element<N, T>::type type; \ }; BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_GET_RESULT_TYPE, ~) #undef BOOST_COMPUTE_GET_RESULT_TYPE // get<N>() specialization for boost::tuple<> #define BOOST_COMPUTE_GET_N(z, n, unused) \ template<size_t N, class Arg, BOOST_PP_ENUM_PARAMS(n, class T)> \ inline meta_kernel& operator<<(meta_kernel &kernel, \ const invoked_get<N, Arg, boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> > &expr) \ { \ typedef typename boost::tuple<BOOST_PP_ENUM_PARAMS(n, T)> T; \ BOOST_STATIC_ASSERT(N < size_t(boost::tuples::length<T>::value)); \ kernel.inject_type<T>(); \ return kernel << expr.m_arg << ".v" << int_(N); \ } BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_GET_N, ~) #undef BOOST_COMPUTE_GET_N } // end detail namespace } // end compute namespace } // end boost namespace #endif // BOOST_COMPUTE_TYPES_TUPLE_HPP
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