projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // (C) Copyright John Maddock 2005. |
| 2 | // Use, modification and distribution are subject to the | |
| 3 | // Boost Software License, Version 1.0. (See accompanying file | |
| 4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 5 | ||
| 6 | #ifdef TEST_STD_HEADERS | |
| 7 | #include <functional> | |
| 8 | #else | |
| 9 | #include <boost/tr1/functional.hpp> | |
| 10 | #endif | |
| 11 | ||
| 12 | #include <boost/static_assert.hpp> | |
| 13 | #include <boost/type_traits/is_base_and_derived.hpp> | |
| 14 | #include "verify_return.hpp" | |
| 15 | ||
| 16 | struct test_functor | |
| 17 | { | |
| 18 | int operator()()const; | |
| 19 | long operator()(int)const; | |
| 20 | double operator()(int, char)const; | |
| 21 | }; | |
| 22 | ||
| 23 | void nothing(){} | |
| 24 | ||
| 25 | template <class Func> | |
| 26 | void test_function(Func*) | |
| 27 | { | |
| 28 | typedef typename Func::result_type result_type; | |
| 29 | ||
| 30 | test_functor t; | |
| 31 | Func f1; | |
| 32 | Func f2(0); | |
| 33 | Func f3(f1); | |
| 34 | Func f4(t); | |
| 35 | ||
| 36 | f2 = f1; | |
| 37 | f2 = 0; | |
| 38 | f2 = t; | |
| 39 | f2 = std::tr1::ref(t); | |
| 40 | f2 = std::tr1::cref(t); | |
| 41 | const Func& cf = f1; | |
| 42 | ||
| 43 | std::tr1::swap(f1, f2); | |
| 44 | if(cf) nothing(); | |
| 45 | if(cf && f2) nothing(); | |
| 46 | if(cf || f2) nothing(); | |
| 47 | if(f2 && !cf) nothing(); | |
| 48 | ||
| 49 | const std::type_info& info = cf.target_type(); | |
| 50 | test_functor* func1 = f1.template target<test_functor>(); | |
| 51 | const test_functor* func2 = cf.template target<test_functor>(); | |
| 52 | ||
| 53 | // comparison with null: | |
| 54 | if(0 == f1) nothing(); | |
| 55 | if(0 != f1) nothing(); | |
| 56 | if(f2 == 0) nothing(); | |
| 57 | if(f2 != 0) nothing(); | |
| 58 | } | |
| 59 | ||
| 60 | ||
| 61 | int main() | |
| 62 | { | |
| 63 | BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::exception, std::tr1::bad_function_call>::value)); | |
| 64 | std::tr1::bad_function_call fe; | |
| 65 | ||
| 66 | test_function(static_cast<std::tr1::function<int (void)>* >(0)); | |
| 67 | test_function(static_cast<std::tr1::function<long (int)>* >(0)); | |
| 68 | test_function(static_cast<std::tr1::function<double (int,char)>* >(0)); | |
| 69 | ||
| 70 | std::tr1::function<int (void)> f1; | |
| 71 | verify_return_type(f1(), int(0)); | |
| 72 | std::tr1::function<long (int)> f2; | |
| 73 | verify_return_type(f2(0), long(0)); | |
| 74 | std::tr1::function<double (int, char)> f3; | |
| 75 | verify_return_type(f3(0,0), double(0)); | |
| 76 | ||
| 77 | BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<int, long>, std::tr1::function<long (int)> >::value)); | |
| 78 | BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<int, char, double>, std::tr1::function<double (int,char)> >::value)); | |
| 79 | return 0; | |
| 80 | } | |
| 81 |