Chris@16: // Boost.Assign library
Chris@16: //
Chris@16: //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
Chris@16: //  distribution is subject to the Boost Software License, Version
Chris@16: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // For more information, see http://www.boost.org/libs/assign/
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASSIGN_LIST_INSERTER_HPP
Chris@16: #define BOOST_ASSIGN_LIST_INSERTER_HPP
Chris@16: 
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: 
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/type_traits/is_same.hpp>
Chris@16: #include <boost/range/begin.hpp>
Chris@16: #include <boost/range/end.hpp>
Chris@16: #include <boost/config.hpp>
Chris@16: #include <cstddef>
Chris@16: 
Chris@16: #include <boost/preprocessor/repetition/enum_binary_params.hpp>
Chris@16: #include <boost/preprocessor/repetition/enum_params.hpp>
Chris@16: #include <boost/preprocessor/cat.hpp>
Chris@16: #include <boost/preprocessor/iteration/local.hpp>
Chris@16: #include <boost/preprocessor/arithmetic/inc.hpp>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: namespace assign_detail
Chris@16: {
Chris@16:     template< class T >
Chris@16:     struct repeater
Chris@16:     {
Chris@16:         std::size_t  sz;
Chris@16:         T            val;
Chris@16: 
Chris@16:         repeater( std::size_t sz_, T r ) : sz( sz_ ), val( r )
Chris@16:         { }
Chris@16:     };
Chris@16:     
Chris@16:     template< class Fun >
Chris@16:     struct fun_repeater
Chris@16:     {
Chris@16:         std::size_t  sz;
Chris@16:         Fun          val;
Chris@16:         
Chris@16:         fun_repeater( std::size_t sz_, Fun r ) : sz( sz_ ), val( r )
Chris@16:         { }
Chris@16:     };
Chris@16:     
Chris@16:     template< class C >
Chris@16:     class call_push_back
Chris@16:     {
Chris@16:         C& c_;
Chris@16:     public:
Chris@16:         call_push_back( C& c ) : c_( c )
Chris@16:         { }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         void operator()( T r ) 
Chris@16:         {
Chris@16:             c_.push_back( r );
Chris@16:         }
Chris@16:     };
Chris@16:     
Chris@16:     template< class C >
Chris@16:     class call_push_front
Chris@16:     {
Chris@16:         C& c_;
Chris@16:     public:
Chris@16:         call_push_front( C& c ) : c_( c )
Chris@16:         { }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         void operator()( T r ) 
Chris@16:         {
Chris@16:             c_.push_front( r );
Chris@16:         }
Chris@16:     };
Chris@16:     
Chris@16:     template< class C >
Chris@16:     class call_push
Chris@16:     {
Chris@16:         C& c_;
Chris@16:     public:
Chris@16:         call_push( C& c ) : c_( c )
Chris@16:         { }
Chris@16:     
Chris@16:         template< class T >
Chris@16:         void operator()( T r ) 
Chris@16:         {
Chris@16:             c_.push( r );
Chris@16:         }
Chris@16:     };
Chris@16:     
Chris@16:     template< class C >
Chris@16:     class call_insert
Chris@16:     {
Chris@16:         C& c_;
Chris@16:     public:
Chris@16:         call_insert( C& c ) : c_( c )
Chris@16:         { }
Chris@16:     
Chris@16:         template< class T >
Chris@16:         void operator()( T r ) 
Chris@16:         {
Chris@16:             c_.insert( r );
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     template< class C >
Chris@16:     class call_add_edge
Chris@16:     {
Chris@16:         C& c_;
Chris@16:     public:
Chris@16:         call_add_edge( C& c ) : c_(c)
Chris@16:         { }
Chris@16: 
Chris@16:         template< class T >
Chris@16:         void operator()( T l, T r )
Chris@16:         {
Chris@16:             add_edge( l, r, c_ );
Chris@16:         }
Chris@16: 
Chris@16:         template< class T, class EP >
Chris@16:         void operator()( T l, T r, const EP& ep )
Chris@16:         {
Chris@16:             add_edge( l, r, ep, c_ );
Chris@16:         }
Chris@16: 
Chris@16:     };
Chris@16:     
Chris@16:     struct forward_n_arguments {};
Chris@16:     
Chris@16: } // namespace 'assign_detail'
Chris@16: 
Chris@16: namespace assign
Chris@16: {
Chris@16: 
Chris@16:     template< class T >
Chris@16:     inline assign_detail::repeater<T>
Chris@16:     repeat( std::size_t sz, T r )
Chris@16:     {
Chris@16:         return assign_detail::repeater<T>( sz, r );
Chris@16:     }
Chris@16:     
Chris@16:     template< class Function >
Chris@16:     inline assign_detail::fun_repeater<Function>
Chris@16:     repeat_fun( std::size_t sz, Function r )
Chris@16:     {
Chris@16:         return assign_detail::fun_repeater<Function>( sz, r );
Chris@16:     }
Chris@16:     
Chris@16: 
Chris@16:     template< class Function, class Argument = assign_detail::forward_n_arguments > 
Chris@16:     class list_inserter
Chris@16:     {
Chris@16:         struct single_arg_type {};
Chris@16:         struct n_arg_type      {};
Chris@16: 
Chris@16:         typedef BOOST_DEDUCED_TYPENAME mpl::if_c< is_same<Argument,assign_detail::forward_n_arguments>::value,
Chris@16:                                                   n_arg_type,
Chris@16:                                                   single_arg_type >::type arg_type;  
Chris@16:             
Chris@16:     public:
Chris@16:         
Chris@16:         list_inserter( Function fun ) : insert_( fun )
Chris@16:         {}
Chris@16:         
Chris@16:         template< class Function2, class Arg >
Chris@16:         list_inserter( const list_inserter<Function2,Arg>& r ) 
Chris@16:         : insert_( r.fun_private() ) 
Chris@16:         {}
Chris@16: 
Chris@16:         list_inserter( const list_inserter& r ) : insert_( r.insert_ )
Chris@16:         {}
Chris@16: 
Chris@16:         list_inserter& operator()()
Chris@16:         {
Chris@16:             insert_( Argument() );
Chris@16:             return *this;
Chris@16:         }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         list_inserter& operator=( const T& r )
Chris@16:         {
Chris@16:             insert_( r );
Chris@16:             return *this;
Chris@16:         }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         list_inserter& operator=( assign_detail::repeater<T> r )
Chris@16:         {
Chris@16:             return operator,( r );
Chris@16:         }
Chris@16:         
Chris@16:         template< class Nullary_function >
Chris@16:         list_inserter& operator=( const assign_detail::fun_repeater<Nullary_function>& r )
Chris@16:         {
Chris@16:             return operator,( r );
Chris@16:         }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         list_inserter& operator,( const T& r )
Chris@16:         {
Chris@16:             insert_( r  );
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@16: #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3205))
Chris@16:         template< class T >
Chris@16:         list_inserter& operator,( const assign_detail::repeater<T> & r )
Chris@16:         {
Chris@16:             return repeat( r.sz, r.val ); 
Chris@16:         }
Chris@16: #else
Chris@16:         template< class T >
Chris@16:         list_inserter& operator,( assign_detail::repeater<T> r )
Chris@16:         {
Chris@16:             return repeat( r.sz, r.val ); 
Chris@16:         }
Chris@16: #endif
Chris@16:         
Chris@16:         template< class Nullary_function >
Chris@16:         list_inserter& operator,( const assign_detail::fun_repeater<Nullary_function>& r )
Chris@16:         {
Chris@16:             return repeat_fun( r.sz, r.val ); 
Chris@16:         }
Chris@16: 
Chris@16:         template< class T >
Chris@16:         list_inserter& repeat( std::size_t sz, T r )
Chris@16:         {
Chris@16:             std::size_t i = 0;
Chris@16:             while( i++ != sz )
Chris@16:                 insert_( r );
Chris@16:             return *this;
Chris@16:         }
Chris@16:         
Chris@16:         template< class Nullary_function >
Chris@16:         list_inserter& repeat_fun( std::size_t sz, Nullary_function fun )
Chris@16:         {
Chris@16:             std::size_t i = 0;
Chris@16:             while( i++ != sz )
Chris@16:                 insert_( fun() );
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@16:         template< class SinglePassIterator >
Chris@16:         list_inserter& range( SinglePassIterator first, 
Chris@16:                               SinglePassIterator last )
Chris@16:         {
Chris@16:             for( ; first != last; ++first )
Chris@16:                 insert_( *first );
Chris@16:             return *this;
Chris@16:         }
Chris@16:         
Chris@16:         template< class SinglePassRange >
Chris@16:         list_inserter& range( const SinglePassRange& r )
Chris@16:         {
Chris@16:             return range( boost::begin(r), boost::end(r) );
Chris@16:         }
Chris@16:         
Chris@16:         template< class T >
Chris@16:         list_inserter& operator()( const T& t )
Chris@16:         {
Chris@16:             insert_( t );
Chris@16:             return *this;
Chris@16:         }
Chris@16: 
Chris@16: #ifndef BOOST_ASSIGN_MAX_PARAMS // use user's value
Chris@16: #define BOOST_ASSIGN_MAX_PARAMS 5        
Chris@16: #endif
Chris@16: #define BOOST_ASSIGN_MAX_PARAMETERS (BOOST_ASSIGN_MAX_PARAMS - 1)
Chris@16: #define BOOST_ASSIGN_PARAMS1(n) BOOST_PP_ENUM_PARAMS(n, class T)
Chris@16: #define BOOST_ASSIGN_PARAMS2(n) BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& t)
Chris@16: #define BOOST_ASSIGN_PARAMS3(n) BOOST_PP_ENUM_PARAMS(n, t)
Chris@16:         
Chris@16: #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
Chris@16: #define BOOST_PP_LOCAL_MACRO(n) \
Chris@16:     template< class T, BOOST_ASSIGN_PARAMS1(n) > \
Chris@16:     list_inserter& operator()(T t, BOOST_ASSIGN_PARAMS2(n) ) \
Chris@16:         { \
Chris@16:             BOOST_PP_CAT(insert, BOOST_PP_INC(n))(t, BOOST_ASSIGN_PARAMS3(n), arg_type()); \
Chris@16:             return *this; \
Chris@16:         } \
Chris@16:         /**/
Chris@16: 
Chris@16: #include BOOST_PP_LOCAL_ITERATE()
Chris@16:         
Chris@16: 
Chris@16: #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
Chris@16: #define BOOST_PP_LOCAL_MACRO(n) \
Chris@16:     template< class T, BOOST_ASSIGN_PARAMS1(n) > \
Chris@16:     void BOOST_PP_CAT(insert, BOOST_PP_INC(n))(T const& t, BOOST_ASSIGN_PARAMS2(n), single_arg_type) \
Chris@16:     { \
Chris@16:         insert_( Argument(t, BOOST_ASSIGN_PARAMS3(n) )); \
Chris@16:     } \
Chris@16:     /**/
Chris@16:         
Chris@16: #include BOOST_PP_LOCAL_ITERATE()
Chris@16: 
Chris@16: #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
Chris@16: #define BOOST_PP_LOCAL_MACRO(n) \
Chris@16:     template< class T, BOOST_ASSIGN_PARAMS1(n) > \
Chris@16:     void BOOST_PP_CAT(insert, BOOST_PP_INC(n))(T const& t, BOOST_ASSIGN_PARAMS2(n), n_arg_type) \
Chris@16:     { \
Chris@16:         insert_(t, BOOST_ASSIGN_PARAMS3(n) ); \
Chris@16:     } \
Chris@16:     /**/
Chris@16:         
Chris@16: #include BOOST_PP_LOCAL_ITERATE()
Chris@16: 
Chris@16:         
Chris@16:         Function fun_private() const
Chris@16:         {
Chris@16:             return insert_;
Chris@16:         }
Chris@16: 
Chris@16:     private:
Chris@16:         
Chris@16:         list_inserter& operator=( const list_inserter& );
Chris@16:         Function insert_;
Chris@16:     };
Chris@16:     
Chris@16:     template< class Function >
Chris@16:     inline list_inserter< Function >
Chris@16:     make_list_inserter( Function fun )
Chris@16:     {
Chris@16:         return list_inserter< Function >( fun );
Chris@16:     }
Chris@16:     
Chris@16:     template< class Function, class Argument >
Chris@16:     inline list_inserter<Function,Argument>
Chris@16:     make_list_inserter( Function fun, Argument* )
Chris@16:     {
Chris@16:         return list_inserter<Function,Argument>( fun );
Chris@16:     }
Chris@16: 
Chris@16:     template< class C >
Chris@16:     inline list_inserter< assign_detail::call_push_back<C>, 
Chris@16:                           BOOST_DEDUCED_TYPENAME C::value_type >
Chris@16:     push_back( C& c )
Chris@16:     {
Chris@16:         static BOOST_DEDUCED_TYPENAME C::value_type* p = 0;
Chris@16:         return make_list_inserter( assign_detail::call_push_back<C>( c ), 
Chris@16:                                    p );
Chris@16:     }
Chris@16:     
Chris@16:     template< class C >
Chris@16:     inline list_inserter< assign_detail::call_push_front<C>,
Chris@16:                           BOOST_DEDUCED_TYPENAME C::value_type >
Chris@16:     push_front( C& c )
Chris@16:     {
Chris@16:         static BOOST_DEDUCED_TYPENAME C::value_type* p = 0;
Chris@16:         return make_list_inserter( assign_detail::call_push_front<C>( c ),
Chris@16:                                    p );
Chris@16:     }
Chris@16: 
Chris@16:     template< class C >
Chris@16:     inline list_inserter< assign_detail::call_insert<C>, 
Chris@16:                           BOOST_DEDUCED_TYPENAME C::value_type >
Chris@16:     insert( C& c )
Chris@16:     {
Chris@16:         static BOOST_DEDUCED_TYPENAME C::value_type* p = 0;
Chris@16:         return make_list_inserter( assign_detail::call_insert<C>( c ),
Chris@16:                                    p );
Chris@16:     }
Chris@16: 
Chris@16:     template< class C >
Chris@16:     inline list_inserter< assign_detail::call_push<C>, 
Chris@16:                           BOOST_DEDUCED_TYPENAME C::value_type >
Chris@16:     push( C& c )
Chris@16:     {
Chris@16:         static BOOST_DEDUCED_TYPENAME C::value_type* p = 0;
Chris@16:         return make_list_inserter( assign_detail::call_push<C>( c ),
Chris@16:                                    p );
Chris@16:     }
Chris@16: 
Chris@16:     template< class C >
Chris@16:     inline list_inserter< assign_detail::call_add_edge<C> >
Chris@16:     add_edge( C& c )   
Chris@16:     {
Chris@16:         return make_list_inserter( assign_detail::call_add_edge<C>( c ) );
Chris@16:     }
Chris@16:     
Chris@16: } // namespace 'assign'
Chris@16: } // namespace 'boost'
Chris@16: 
Chris@16: #undef BOOST_ASSIGN_PARAMS1
Chris@16: #undef BOOST_ASSIGN_PARAMS2
Chris@16: #undef BOOST_ASSIGN_PARAMS3
Chris@16: #undef BOOST_ASSIGN_MAX_PARAMETERS
Chris@16: 
Chris@16: #endif