123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384 |
- // Copyright (c) 2000
- // Cadenza New Zealand Ltd
- //
- // (C) Copyright John Maddock 2001.
- //
- // Use, modification and distribution are subject to 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://www.boost.org/libs/config for the most recent version.
- // MACRO: BOOST_NO_POINTER_TO_MEMBER_CONST
- // TITLE: pointers to const member functions
- // DESCRIPTION: The compiler does not correctly handle
- // pointers to const member functions, preventing use
- // of these in overloaded function templates.
- // See boost/functional.hpp for example.
- namespace boost_no_pointer_to_member_const{
- template <class S, class T>
- class const_mem_fun_t
- {
- public:
- explicit const_mem_fun_t(S (T::*p)() const)
- :
- ptr(p)
- {}
- S operator()(const T* p) const
- {
- return (p->*ptr)();
- }
- private:
- S (T::*ptr)() const;
- };
- template <class S, class T, class A>
- class const_mem_fun1_t
- {
- public:
- explicit const_mem_fun1_t(S (T::*p)(A) const)
- :
- ptr(p)
- {}
- S operator()(const T* p, const A& x) const
- {
- return (p->*ptr)(x);
- }
- private:
- S (T::*ptr)(A) const;
- };
- template<class S, class T>
- inline const_mem_fun_t<S,T> mem_fun(S (T::*f)() const)
- {
- return const_mem_fun_t<S,T>(f);
- }
- template<class S, class T, class A>
- inline const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const)
- {
- return const_mem_fun1_t<S,T,A>(f);
- }
- class tester
- {
- public:
- void foo1()const{}
- int foo2(int i)const{ return i*2; }
- };
- int test()
- {
- boost_no_pointer_to_member_const::mem_fun(&tester::foo1);
- boost_no_pointer_to_member_const::mem_fun(&tester::foo2);
- return 0;
- }
- }
|