82 lines
3.6 KiB
C++
82 lines
3.6 KiB
C++
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// (C) Copyright John Maddock 2005.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifdef TEST_STD_HEADERS
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#include <functional>
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#else
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#include <boost/tr1/functional.hpp>
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#endif
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#include <boost/static_assert.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/type_traits/is_base_and_derived.hpp>
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#include "verify_return.hpp"
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struct test_type
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{
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int member();
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int cmember()const;
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int member2(char);
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int cmember2(char)const;
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};
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struct functor1 : public std::unary_function<int, double>
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{
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double operator()(int)const;
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};
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struct functor2 : public std::binary_function<int, char, double>
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{
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double operator()(int, char)const;
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};
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int main()
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{
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<int, double>, std::tr1::reference_wrapper<double (int)> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<int, double>, std::tr1::reference_wrapper<double (*)(int)> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<test_type*, int>, std::tr1::reference_wrapper<int (test_type::*)()> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<const test_type*, int>, std::tr1::reference_wrapper<int (test_type::*)()const> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<int, double>, std::tr1::reference_wrapper<functor1> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<int, char, double>, std::tr1::reference_wrapper<double (int, char)> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<int, char, double>, std::tr1::reference_wrapper<double (*)(int, char)> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<test_type*, char, int>, std::tr1::reference_wrapper<int (test_type::*)(char)> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<const test_type*, char, int>, std::tr1::reference_wrapper<int (test_type::*)(char)const> >::value));
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BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<int, char, double>, std::tr1::reference_wrapper<functor2> >::value));
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test_type* ptt = 0;
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test_type const* cptt = 0;
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int zero = 0;
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// now check operator():
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std::tr1::reference_wrapper<double (int)>* pr1;
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verify_return_type((*pr1)(0), double());
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std::tr1::reference_wrapper<double (*)(int)>* pr2;
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verify_return_type((*pr2)(0), double());
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std::tr1::reference_wrapper<int (test_type::*)()>* pr3;
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verify_return_type((*pr3)(ptt), int());
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std::tr1::reference_wrapper<int (test_type::*)()const>* pr4;
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verify_return_type((*pr4)(cptt), int());
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std::tr1::reference_wrapper<functor1>* pr5;
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verify_return_type((*pr5)(zero), double());
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std::tr1::reference_wrapper<double (int, char)>* pr1b;
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verify_return_type((*pr1b)(0,0), double());
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std::tr1::reference_wrapper<double (*)(int, char)>* pr2b;
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verify_return_type((*pr2b)(0,0), double());
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std::tr1::reference_wrapper<int (test_type::*)(char)>* pr3b;
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verify_return_type((*pr3b)(ptt,zero), int());
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std::tr1::reference_wrapper<int (test_type::*)(char)const>* pr4b;
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verify_return_type((*pr4b)(cptt,zero), int());
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std::tr1::reference_wrapper<functor2>* pr5b;
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verify_return_type((*pr5b)(zero, zero), double());
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// check implicit convertion:
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int i = 0;
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int& ri = std::tr1::ref(i);
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const int& cri = std::tr1::cref(i);
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}
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