1 //  (C) Copyright Gennadiy Rozental 2012-2014.
2 //  Distributed under the Boost Software License, Version 1.0.
3 //  (See accompanying file LICENSE_1_0.txt or copy at
4 //  http://www.boost.org/LICENSE_1_0.txt)
5 
6 //  See http://www.boost.org/libs/test for the library home page.
7 //
8 //  File        : $RCSfile$
9 //
10 //  Version     : $Revision$
11 //
12 //  Description : defines the is_cstring type trait
13 // ***************************************************************************
14 
15 #ifndef BOOST_TEST_UTILS_IS_CSTRING_HPP
16 #define BOOST_TEST_UTILS_IS_CSTRING_HPP
17 
18 // Boost
19 #include <boost/mpl/bool.hpp>
20 #include <boost/type_traits/is_same.hpp>
21 #include <boost/type_traits/decay.hpp>
22 #include <boost/type_traits/remove_pointer.hpp>
23 
24 //____________________________________________________________________________//
25 
26 namespace boost {
27 namespace unit_test {
28 
29 // ************************************************************************** //
30 // **************                  is_cstring                  ************** //
31 // ************************************************************************** //
32 
33 namespace ut_detail {
34 
35 template<typename T>
36 struct is_cstring_impl : public mpl::false_ {};
37 
38 template<typename T>
39 struct is_cstring_impl<T const*> : public is_cstring_impl<T*> {};
40 
41 template<typename T>
42 struct is_cstring_impl<T const* const> : public is_cstring_impl<T*> {};
43 
44 template<>
45 struct is_cstring_impl<char*> : public mpl::true_ {};
46 
47 template<>
48 struct is_cstring_impl<wchar_t*> : public mpl::true_ {};
49 
50 } // namespace ut_detail
51 
52 template<typename T>
53 struct is_cstring : public ut_detail::is_cstring_impl<typename decay<T>::type> {};
54 
55 } // namespace unit_test
56 } // namespace boost
57 
58 #endif // BOOST_TEST_UTILS_IS_CSTRING_HPP
59