2 // Boost.Pointer Container
4 // Copyright Thorsten Ottosen 2003-2005. Use, modification and
5 // distribution is subject to the Boost Software License, Version
6 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt)
9 // For more information, see http://www.boost.org/libs/ptr_container/
12 #ifndef BOOST_PTR_CONTAINER_INDIRECT_FUN_HPP
13 #define BOOST_PTR_CONTAINER_INDIRECT_FUN_HPP
15 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
19 #include <boost/config.hpp>
21 #ifdef BOOST_NO_SFINAE
23 #include <boost/utility/result_of.hpp>
24 #include <boost/pointee.hpp>
25 #endif // BOOST_NO_SFINAE
27 #include <boost/assert.hpp>
38 #ifdef BOOST_NO_SFINAE
46 indirect_fun() : fun(Fun())
49 indirect_fun( Fun f ) : fun(f)
53 #ifdef BOOST_NO_SFINAE
56 BOOST_DEDUCED_TYPENAME result_of< Fun( BOOST_DEDUCED_TYPENAME pointee<T>::type ) >::type
58 operator()( const T& r ) const
63 template< class T, class U >
64 #ifdef BOOST_NO_SFINAE
67 BOOST_DEDUCED_TYPENAME result_of< Fun( BOOST_DEDUCED_TYPENAME pointee<T>::type,
68 BOOST_DEDUCED_TYPENAME pointee<U>::type ) >::type
70 operator()( const T& r, const U& r2 ) const
72 return fun( *r, *r2 );
77 inline indirect_fun<Fun> make_indirect_fun( Fun f )
79 return indirect_fun<Fun>( f );
88 #ifdef BOOST_NO_SFINAE
92 class void_ptr_indirect_fun
97 void_ptr_indirect_fun() : fun(Fun())
100 void_ptr_indirect_fun( Fun f ) : fun(f)
102 #ifdef BOOST_NO_SFINAE
105 BOOST_DEDUCED_TYPENAME result_of< Fun( Arg1 ) >::type
107 operator()( const void* r ) const
109 BOOST_ASSERT( r != 0 );
110 return fun( * static_cast<const Arg1*>( r ) );
113 #ifdef BOOST_NO_SFINAE
116 BOOST_DEDUCED_TYPENAME result_of< Fun( Arg1, Arg2 ) >::type
118 operator()( const void* l, const void* r ) const
120 BOOST_ASSERT( l != 0 && r != 0 );
121 return fun( * static_cast<const Arg1*>( l ), * static_cast<const Arg2*>( r ) );
125 template< class Arg, class Fun >
126 inline void_ptr_indirect_fun<Fun,Arg> make_void_ptr_indirect_fun( Fun f )
128 return void_ptr_indirect_fun<Fun,Arg>( f );
131 } // namespace 'boost'