Edit: /usr/include/boost/hana/value.hpp (1561B)
/*!
@file
Defines `boost::hana::value`.
@copyright Louis Dionne 2013-2017
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_HANA_VALUE_HPP
#define BOOST_HANA_VALUE_HPP
#include
#include
#include
#include
#include
#include
BOOST_HANA_NAMESPACE_BEGIN
template
struct value_impl> : default_ {
template
static constexpr auto apply(Args&& ...args) = delete;
};
template
constexpr decltype(auto) value() {
using RawT = typename std::remove_cv<
typename std::remove_reference::type
>::type;
using C = typename hana::tag_of::type;
using Value = BOOST_HANA_DISPATCH_IF(
value_impl, hana::Constant::value
);
#ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
static_assert(hana::Constant::value,
"hana::value() requires 'T' to be a Constant");
#endif
return Value::template apply();
}
template
struct value_impl::value>> {
template
static constexpr auto apply()
{ return C::value; }
};
BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_VALUE_HPP