/usr/include/boost/callable_traits/detail
Edit: /usr/include/boost/callable_traits/detail/utility.hpp (3397B)
/*
@Copyright Barrett Adair 2015-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_CLBL_TRTS_DETAIL_UTILITY_HPP
#define BOOST_CLBL_TRTS_DETAIL_UTILITY_HPP
#include
#include
#include
namespace boost { namespace callable_traits { namespace detail {
struct cdecl_tag{};
struct stdcall_tag{};
struct fastcall_tag{};
struct pascal_tag{};
struct invalid_type { invalid_type() = delete; };
struct reference_error { reference_error() = delete; };
template
using error_type = typename std::conditional<
std::is_reference::value, reference_error, invalid_type>::type;
#ifdef BOOST_CLBL_TRTS_DISABLE_ABOMINABLE_FUNCTIONS
struct abominable_functions_not_supported_on_this_compiler{};
#endif
// used to convey "this type doesn't matter" in code
struct dummy {};
// used as return type in failed SFINAE tests
struct substitution_failure : std::false_type{};
template
using bool_type = std::integral_constant;
// shorthand for std::tuple_element
template
using at = typename std::tuple_element::type;
template
using add_member_pointer = T Class::*;
template
using fail_when_same = fail_if::value, ErrorType>;
template::type>
using try_but_fail_if_invalid = sfinae_try,
fail_when_same>;
template::type,
bool is_reference_error = std::is_same::value>
using fail_if_invalid = fail_if<
std::is_same::value || is_reference_error,
typename std::conditional::type>;
template
using fallback_if_invalid = typename std::conditional<
std::is_same::value, Fallback, T>::type;
template class Alias, typename U = Alias>
struct force_sfinae {
using type = U;
};
template
using shallow_decay = typename std::remove_cv<
typename std::remove_reference::type>::type;
template
struct is_reference_wrapper_t {
using type = std::false_type;
};
template
struct is_reference_wrapper_t> {
using type = std::true_type;
};
template
using is_reference_wrapper =
typename is_reference_wrapper_t>::type;
template
struct unwrap_reference_t {
using type = T;
};
template
struct unwrap_reference_t> {
using type = decltype(std::declval().get());
};
// removes std::reference_wrapper
template
using unwrap_reference = typename unwrap_reference_t::type;
}}} // namespace boost::callable_traits::detail
#endif // #ifndef BOOST_CLBL_TRTS_DETAIL_UTILITY_HPP