Chris@102: // Boost.Range library
Chris@102: //
Chris@102: //  Copyright Neil Groves 2014. Use, modification and
Chris@102: //  distribution is subject to the Boost Software License, Version
Chris@102: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@102: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@102: //
Chris@102: // For more information, see http://www.boost.org/libs/range/
Chris@102: //
Chris@102: #ifndef BOOST_RANGE_DETAIL_COMBINE_CXX03_HPP
Chris@102: #define BOOST_RANGE_DETAIL_COMBINE_CXX03_HPP
Chris@102: 
Chris@102: #ifndef BOOST_RANGE_MIN_COMBINE_ARGS
Chris@102: #define BOOST_RANGE_MIN_COMBINE_ARGS 2
Chris@102: #endif
Chris@102: 
Chris@102: #ifndef BOOST_RANGE_MAX_COMBINE_ARGS
Chris@102: #define BOOST_RANGE_MAX_COMBINE_ARGS 5
Chris@102: #endif
Chris@102: 
Chris@102: #include <boost/config.hpp>
Chris@102: #include <boost/iterator/zip_iterator.hpp>
Chris@102: #include <boost/preprocessor/arithmetic/dec.hpp>
Chris@102: #include <boost/preprocessor/arithmetic/div.hpp>
Chris@102: #include <boost/preprocessor/arithmetic/mul.hpp>
Chris@102: #include <boost/preprocessor/control.hpp>
Chris@102: #include <boost/preprocessor/control/while.hpp>
Chris@102: #include <boost/preprocessor/facilities/empty.hpp>
Chris@102: #include <boost/preprocessor/facilities/identity.hpp>
Chris@102: #include <boost/preprocessor/iteration/local.hpp>
Chris@102: #include <boost/preprocessor/punctuation/comma.hpp>
Chris@102: #include <boost/preprocessor/repetition.hpp>
Chris@102: #include <boost/preprocessor/tuple/elem.hpp>
Chris@102: #include <boost/range/iterator_range_core.hpp>
Chris@102: #include <boost/type_traits/remove_reference.hpp>
Chris@102: #include <boost/mpl/transform.hpp>
Chris@102: #include <boost/utility/result_of.hpp>
Chris@102: 
Chris@102: #include <vector>
Chris@102: #include <list>
Chris@102: 
Chris@102: namespace boost
Chris@102: {
Chris@102:     namespace range_detail
Chris@102:     {
Chris@102: 
Chris@102: template<typename F, typename T, int SIZE>
Chris@102: struct combined_result_impl;
Chris@102: 
Chris@102: template<typename F, typename T>
Chris@102: struct combined_result
Chris@102:     : combined_result_impl<F, T, tuples::length<T>::value>
Chris@102: {
Chris@102: };
Chris@102: 
Chris@102: #define BOOST_RANGE_combined_element(z, n, data) \
Chris@102:     typename tuples::element<n, T>::type
Chris@102: 
Chris@102: #define BOOST_RANGE_combined_result(z, n, data) \
Chris@102:     template<typename F, typename T> \
Chris@102:     struct combined_result_impl <F,T,n> \
Chris@102:         : result_of<F(BOOST_PP_ENUM(n, BOOST_RANGE_combined_element, ~))> \
Chris@102:     { \
Chris@102:     };
Chris@102: 
Chris@102: #define BOOST_PP_LOCAL_MACRO(n) BOOST_RANGE_combined_result(~,n,~)
Chris@102: 
Chris@102: #define BOOST_PP_LOCAL_LIMITS (BOOST_RANGE_MIN_COMBINE_ARGS, \
Chris@102:                                BOOST_RANGE_MAX_COMBINE_ARGS)
Chris@102: #include BOOST_PP_LOCAL_ITERATE()
Chris@102: 
Chris@102: #define BOOST_RANGE_combined_get(z, n, data) get<n>(tuple)
Chris@102: 
Chris@102: #define BOOST_RANGE_combined_unpack(z, n, data) \
Chris@102:     template<typename F, typename T> inline \
Chris@102:     typename combined_result<F,T>::type \
Chris@102:     unpack_(mpl::int_<n>, F f, const T& tuple) \
Chris@102:     { \
Chris@102:         return f(BOOST_PP_ENUM(n, BOOST_RANGE_combined_get, ~)); \
Chris@102:     }
Chris@102: 
Chris@102: #define BOOST_PP_LOCAL_MACRO(n) BOOST_RANGE_combined_unpack(~,n,~)
Chris@102: #define BOOST_PP_LOCAL_LIMITS (BOOST_RANGE_MIN_COMBINE_ARGS, \
Chris@102:                                BOOST_RANGE_MAX_COMBINE_ARGS)
Chris@102: #include BOOST_PP_LOCAL_ITERATE()
Chris@102: 
Chris@102: } // namespace range_detail
Chris@102: 
Chris@102: namespace range
Chris@102: {
Chris@102: 
Chris@102: #define BOOST_RANGE_combined_seq(z, n, data) boost::data(BOOST_PP_CAT(r,n))
Chris@102: 
Chris@102: #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
Chris@102: 
Chris@102: #include <boost/range/detail/combine_no_rvalue.hpp>
Chris@102: 
Chris@102: #else // by using rvalue references we avoid requiring 2^n overloads.
Chris@102: 
Chris@102: #include <boost/range/detail/combine_rvalue.hpp>
Chris@102: 
Chris@102: #endif
Chris@102: 
Chris@102: #define BOOST_PP_LOCAL_MACRO(n) BOOST_RANGE_combine(~,n,~)
Chris@102: #define BOOST_PP_LOCAL_LIMITS (BOOST_RANGE_MIN_COMBINE_ARGS, \
Chris@102:                                BOOST_RANGE_MAX_COMBINE_ARGS)
Chris@102: #include BOOST_PP_LOCAL_ITERATE()
Chris@102: 
Chris@102:     } // namespace range
Chris@102: 
Chris@102:     using boost::range::combine;
Chris@102: 
Chris@102: } // namespace boost
Chris@102: 
Chris@102: #endif // include guard
Chris@102: 
Chris@102: #undef BOOST_RANGE_combined_element
Chris@102: #undef BOOST_RANGE_combined_result
Chris@102: #undef BOOST_RANGE_combined_get
Chris@102: #undef BOOST_RANGE_combined_unpack
Chris@102: #undef BOOST_RANGE_combined_seq
Chris@102: #undef BOOST_RANGE_combined_exp_pred
Chris@102: #undef BOOST_RANGE_combined_exp_op
Chris@102: #undef BOOST_RANGE_combined_exp
Chris@102: #undef BOOST_RANGE_combined_bitset_pred
Chris@102: #undef BOOST_RANGE_combined_bitset_op
Chris@102: #undef BOOST_RANGE_combined_bitset
Chris@102: #undef BOOST_RANGE_combined_range_iterator
Chris@102: #undef BOOST_RANGE_combined_args
Chris@102: #undef BOOST_RANGE_combine_impl
Chris@102: #undef BOOST_RANGE_combine