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- //---------------------------------------------------------------------------//
- // 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_PAIR_HPP
- #define BOOST_COMPUTE_TYPES_PAIR_HPP
- #include <string>
- #include <utility>
- #include <boost/compute/functional/get.hpp>
- #include <boost/compute/type_traits/type_definition.hpp>
- #include <boost/compute/type_traits/type_name.hpp>
- #include <boost/compute/detail/meta_kernel.hpp>
- namespace boost {
- namespace compute {
- namespace detail {
- // meta_kernel operator for std::pair literals
- template<class T1, class T2>
- inline meta_kernel&
- operator<<(meta_kernel &kernel, const std::pair<T1, T2> &x)
- {
- kernel << "(" << type_name<std::pair<T1, T2> >() << ")"
- << "{" << kernel.make_lit(x.first) << ", "
- << kernel.make_lit(x.second) << "}";
- return kernel;
- }
- // inject_type() specialization for std::pair
- template<class T1, class T2>
- struct inject_type_impl<std::pair<T1, T2> >
- {
- void operator()(meta_kernel &kernel)
- {
- typedef std::pair<T1, T2> pair_type;
- kernel.inject_type<T1>();
- kernel.inject_type<T2>();
- kernel.add_type_declaration<pair_type>(type_definition<pair_type>());
- }
- };
- // get<N>() result type specialization for std::pair<>
- template<class T1, class T2>
- struct get_result_type<0, std::pair<T1, T2> >
- {
- typedef T1 type;
- };
- template<class T1, class T2>
- struct get_result_type<1, std::pair<T1, T2> >
- {
- typedef T2 type;
- };
- // get<N>() specialization for std::pair<>
- template<size_t N, class Arg, class T1, class T2>
- inline meta_kernel& operator<<(meta_kernel &kernel,
- const invoked_get<N, Arg, std::pair<T1, T2> > &expr)
- {
- kernel.inject_type<std::pair<T1, T2> >();
- return kernel << expr.m_arg << (N == 0 ? ".first" : ".second");
- }
- } // end detail namespace
- namespace detail {
- // type_name() specialization for std::pair
- template<class T1, class T2>
- struct type_name_trait<std::pair<T1, T2> >
- {
- static const char* value()
- {
- static std::string name =
- std::string("_pair_") +
- type_name<T1>() + "_" + type_name<T2>() +
- "_t";
- return name.c_str();
- }
- };
- // type_definition() specialization for std::pair
- template<class T1, class T2>
- struct type_definition_trait<std::pair<T1, T2> >
- {
- static std::string value()
- {
- typedef std::pair<T1, T2> pair_type;
- std::stringstream declaration;
- declaration << "typedef struct {\n"
- << " " << type_name<T1>() << " first;\n"
- << " " << type_name<T2>() << " second;\n"
- << "} " << type_name<pair_type>() << ";\n";
- return declaration.str();
- }
- };
- } // end detail namespace
- } // end compute namespace
- } // end boost namespace
- #endif // BOOST_COMPUTE_TYPES_PAIR_HPP
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