boost/assign/ptr_list_inserter.hpp

0001 // Boost.Assign library
0002 //
0003 //  Copyright Thorsten Ottosen 2003-2005. Use, modification and
0004 //  distribution is subject to the Boost Software License, Version
0005 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
0006 //  http://www.boost.org/LICENSE_1_0.txt)
0007 //
0008 // For more information, see http://www.boost.org/libs/assign/
0009 //
0010
0011 #ifndef BOOST_ASSIGN_PTR_LIST_INSERTER_HPP
0012 #define BOOST_ASSIGN_PTR_LIST_INSERTER_HPP
0013
0014 #if defined(_MSC_VER)
0015 # pragma once
0016 #endif
0017
0018 #include <boost/assign/list_inserter.hpp>
0019 #include <boost/type_traits/remove_reference.hpp>
0020 #include <boost/type_traits/remove_pointer.hpp>
0021 #include <boost/move/utility.hpp>
0022
0023 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
0024
0025 #include <boost/preprocessor/repetition/enum_binary_params.hpp>
0026 #include <boost/preprocessor/repetition/enum_params.hpp>
0027 #include <boost/preprocessor/iteration/local.hpp>
0028
0029 #endif
0030
0031 namespace boost
0032 {
0033
0034 namespace assign
0035 {
0036     template< class Function, class Obj >
0037     class ptr_list_inserter
0038     {
0039         typedef BOOST_DEDUCED_TYPENAME
0040                 remove_pointer< BOOST_DEDUCED_TYPENAME
0041                        remove_reference<Obj>::type >::type
0042            obj_type;
0043     public:
0044
0045         ptr_list_inserter( Function fun ) : insert_( fun )
0046         {}
0047
0048         template< class Function2, class Obj2 >
0049         ptr_list_inserter( const ptr_list_inserter<Function2,Obj2>& r )
0050         : insert_( r.fun_private() )
0051         {}
0052
0053         ptr_list_inserter( const ptr_list_inserter& r ) : insert_( r.insert_ )
0054         {}
0055
0056
0057 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
0058         ptr_list_inserter& operator()()
0059         {
0060             insert_( new obj_type() );
0061             return *this;
0062         }
0063
0064         template< class T >
0065         ptr_list_inserter& operator()( const T& t )
0066         {
0067             insert_( new obj_type(t) );
0068             return *this;
0069         }
0070
0071 #ifndef BOOST_ASSIGN_MAX_PARAMS // use user's value
0072 #define BOOST_ASSIGN_MAX_PARAMS 5
0073 #endif
0074 #define BOOST_ASSIGN_MAX_PARAMETERS (BOOST_ASSIGN_MAX_PARAMS - 1)
0075 #define BOOST_ASSIGN_PARAMS1(n) BOOST_PP_ENUM_PARAMS(n, class T)
0076 #define BOOST_ASSIGN_PARAMS2(n) BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& t)
0077 #define BOOST_ASSIGN_PARAMS3(n) BOOST_PP_ENUM_PARAMS(n, t)
0078
0079 #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
0080 #define BOOST_PP_LOCAL_MACRO(n) \
0081     template< class T, BOOST_ASSIGN_PARAMS1(n) > \
0082     ptr_list_inserter& operator()( const T& t, BOOST_ASSIGN_PARAMS2(n) ) \
0083     { \
0084         insert_( new obj_type(t, BOOST_ASSIGN_PARAMS3(n) )); \
0085         return *this; \
0086     } \
0087     /**/
0088
0089 #include BOOST_PP_LOCAL_ITERATE()
0090
0091 #else
0092
0093         template< class... Ts >
0094         ptr_list_inserter& operator()(Ts&&... ts)
0095         {
0096             insert_(new obj_type(boost::forward<Ts>(ts)...));
0097             return *this;
0098         }
0099
0100 #endif
0101
0102     private:
0103
0104         ptr_list_inserter& operator=( const ptr_list_inserter& );
0105         Function insert_;
0106     };
0107
0108     template< class Obj, class Function >
0109     inline ptr_list_inserter< Function, Obj >
0110     make_ptr_list_inserter( Function fun )
0111     {
0112         return ptr_list_inserter< Function, Obj >( fun );
0113     }
0114
0115     template< class C >
0116     inline ptr_list_inserter< assign_detail::call_push_back<C>,
0117                               BOOST_DEDUCED_TYPENAME C::reference >
0118     ptr_push_back( C& c )
0119     {
0120         return make_ptr_list_inserter<BOOST_DEDUCED_TYPENAME C::reference>
0121                    ( assign_detail::call_push_back<C>( c ) );
0122     }
0123
0124 #ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
0125
0126     template< class T, class C >
0127     inline ptr_list_inserter< assign_detail::call_push_back<C>, T >
0128     ptr_push_back( C& c )
0129     {
0130         return make_ptr_list_inserter<T>(
0131                     assign_detail::call_push_back<C>( c ) );
0132     }
0133
0134 #endif
0135
0136     template< class C >
0137     inline ptr_list_inserter< assign_detail::call_push_front<C>,
0138                               BOOST_DEDUCED_TYPENAME C::reference >
0139     ptr_push_front( C& c )
0140     {
0141         return make_ptr_list_inserter<BOOST_DEDUCED_TYPENAME C::reference>
0142                  ( assign_detail::call_push_front<C>( c ) );
0143     }
0144
0145 #ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
0146
0147     template< class T, class C >
0148     inline ptr_list_inserter< assign_detail::call_push_front<C>, T >
0149     ptr_push_front( C& c )
0150     {
0151         return make_ptr_list_inserter<T>(
0152                     assign_detail::call_push_front<C>( c ) );
0153     }
0154
0155 #endif
0156
0157     template< class C >
0158     inline ptr_list_inserter< assign_detail::call_insert<C>,
0159                           BOOST_DEDUCED_TYPENAME C::reference>
0160     ptr_insert( C& c )
0161     {
0162         return make_ptr_list_inserter<BOOST_DEDUCED_TYPENAME C::reference>
0163                     ( assign_detail::call_insert<C>( c ) );
0164     }
0165
0166 #ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
0167
0168     template< class T, class C >
0169     inline ptr_list_inserter< assign_detail::call_insert<C>, T >
0170     ptr_insert( C& c )
0171     {
0172         return make_ptr_list_inserter<T>( assign_detail::call_insert<C>( c ) );
0173     }
0174
0175 #endif
0176
0177
0178 } // namespace 'assign'
0179 } // namespace 'boost'
0180
0181 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
0182
0183 #undef BOOST_ASSIGN_PARAMS1
0184 #undef BOOST_ASSIGN_PARAMS2
0185 #undef BOOST_ASSIGN_PARAMS3
0186 #undef BOOST_ASSIGN_MAX_PARAMETERS
0187
0188 #endif
0189
0190 #endif