90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
// (C) Copyright Gennadiy Rozental 2001.
|
|
// Distributed under 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/test for the library home page.
|
|
//
|
|
// File : $RCSfile$
|
|
//
|
|
// Version : $Revision$
|
|
//
|
|
// Description : defines the is_cstring type trait
|
|
// ***************************************************************************
|
|
|
|
#ifndef BOOST_TEST_UTILS_IS_CSTRING_HPP
|
|
#define BOOST_TEST_UTILS_IS_CSTRING_HPP
|
|
|
|
// Boost
|
|
#include <boost/mpl/bool.hpp>
|
|
#include <boost/type_traits/is_same.hpp>
|
|
#include <boost/type_traits/decay.hpp>
|
|
#include <boost/type_traits/remove_pointer.hpp>
|
|
#include <boost/type_traits/remove_const.hpp>
|
|
#include <boost/type_traits/add_const.hpp>
|
|
|
|
#include <string>
|
|
|
|
//____________________________________________________________________________//
|
|
|
|
namespace boost {
|
|
namespace unit_test {
|
|
|
|
// ************************************************************************** //
|
|
// ************** is_cstring ************** //
|
|
// ************************************************************************** //
|
|
|
|
namespace ut_detail {
|
|
|
|
template<typename T>
|
|
struct is_cstring_impl : public mpl::false_ {};
|
|
|
|
template<typename T>
|
|
struct is_cstring_impl<T const*> : public is_cstring_impl<T*> {};
|
|
|
|
template<typename T>
|
|
struct is_cstring_impl<T const* const> : public is_cstring_impl<T*> {};
|
|
|
|
template<>
|
|
struct is_cstring_impl<char*> : public mpl::true_ {};
|
|
|
|
template<>
|
|
struct is_cstring_impl<wchar_t*> : public mpl::true_ {};
|
|
|
|
template <typename T>
|
|
struct deduce_cstring_impl {
|
|
typedef typename boost::add_const<
|
|
typename boost::remove_pointer<
|
|
typename boost::decay<T>::type
|
|
>::type
|
|
>::type type;
|
|
};
|
|
|
|
template <typename T>
|
|
struct deduce_cstring_impl< std::basic_string<T, std::char_traits<T> > > {
|
|
// const is required here
|
|
typedef typename boost::add_const<T>::type type;
|
|
};
|
|
|
|
} // namespace ut_detail
|
|
|
|
template<typename T>
|
|
struct is_cstring : public ut_detail::is_cstring_impl<typename decay<T>::type> {};
|
|
|
|
template<typename T>
|
|
struct is_cstring< std::basic_string<T, std::char_traits<T> > > : public mpl::true_ {};
|
|
|
|
template <class T>
|
|
struct deduce_cstring {
|
|
typedef typename
|
|
boost::remove_const<
|
|
typename boost::remove_reference<T>::type
|
|
>::type U;
|
|
typedef typename ut_detail::deduce_cstring_impl<U>::type type;
|
|
};
|
|
|
|
} // namespace unit_test
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_TEST_UTILS_IS_CSTRING_HPP
|