/usr/include/boost/callable_traits
Edit: /usr/include/boost/callable_traits/is_const_member.hpp (2880B)
/*
@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_IS_CONST_MEMBER_HPP
#define BOOST_CLBL_TRTS_IS_CONST_MEMBER_HPP
#include
namespace boost { namespace callable_traits {
//[ is_const_member_hpp
/*`[section:ref_is_const_member is_const_member]
[heading Header]
``#include ``
[heading Definition]
*/
// inherits from either std::true_type or std::false_type
template
struct is_const_member;
//<-
template
struct is_const_member
: detail::traits>::is_const_member {
using type = typename detail::traits<
detail::shallow_decay>::is_const_member;
};
#ifdef BOOST_CLBL_TRTS_DISABLE_VARIABLE_TEMPLATES
template
struct is_const_member_v {
static_assert(std::is_same::value,
"Variable templates not supported on this compiler.");
};
#else
//->
// only available when variable templates are supported
template
//<-
BOOST_CLBL_TRAITS_INLINE_VAR
//->
constexpr bool is_const_member_v = //see below
//<-
detail::traits>::is_const_member::value;
#endif
}} // namespace boost::callable_traits
//->
/*`
[heading Constraints]
* none
[heading Behavior]
* `is_const_member::value` is `true` when either:
* `T` is a function type with a `const` member qualifier
* `T` is a pointer to a member function with a `const` member qualifier
* `T` is a function object with a non-overloaded `operator()`, where the `operator()` has a `const` member qualifier
* On compilers that support variable templates, `is_const_member_v` is equivalent to `is_const_member::value`.
[heading Input/Output Examples]
[table
[[`T`] [`is_const_member_v`]]
[[`int() const`] [`true`]]
[[`int() const volatile`] [`true`]]
[[`int() const & transaction_safe`] [`true`]]
[[`int() const &&`] [`true`]]
[[`int(foo::*&)() const`] [`true`]]
[[`int(foo::*)() const volatile`] [`true`]]
[[`int(foo::*)() const volatile &&`][`true`]]
[[`int(foo::* const)() const`] [`true`]]
[[`int()`] [`false`]]
[[`int() volatile`] [`false`]]
[[`int() &&`] [`false`]]
[[`int(*)()`] [`false`]]
[[`int`] [`false`]]
[[`int foo::*`] [`false`]]
[[`const int foo::*`] [`false`]]
]
[heading Example Program]
[import ../example/is_const_member.cpp]
[is_const_member]
[endsect]
*/
//]
#endif // #ifndef BOOST_CLBL_TRTS_IS_CONST_MEMBER_HPP