FM / experimental

/usr/include/boost/hana/experimental

Name	Size	Mode	Actions
printable.hpp	8329	0644	edit dl rm
types.hpp	5523	0644	edit dl rm
type_name.hpp	2229	0644	edit dl rm
view.hpp	17827	0644	edit dl rm

Edit: /usr/include/boost/hana/experimental/type_name.hpp (2229B)

/*
@file
Defines `boost::hana::experimental::type_name`.

@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_EXPERIMENTAL_TYPE_NAME_HPP
#define BOOST_HANA_EXPERIMENTAL_TYPE_NAME_HPP

#include <boost/hana/config.hpp>
#include <boost/hana/string.hpp>

#include <cstddef>
#include <utility>

BOOST_HANA_NAMESPACE_BEGIN namespace experimental {
    namespace detail {
        struct cstring {
            char const* ptr;
            std::size_t length;
        };

// Note: We substract the null terminator from the string sizes below.
        template <typename T>
        constexpr cstring type_name_impl2() {

#if defined(__clang__)
            constexpr char const* pretty_function = __PRETTY_FUNCTION__;
            constexpr std::size_t total_size = sizeof(__PRETTY_FUNCTION__) - 1;
            constexpr std::size_t prefix_size = sizeof("boost::hana::experimental::detail::cstring boost::hana::experimental::detail::type_name_impl2() [T = ") - 1;
            constexpr std::size_t suffix_size = sizeof("]") - 1;
        #else
            #error "No support for this compiler."
        #endif

return {pretty_function + prefix_size, total_size - prefix_size - suffix_size};
        }

template <typename T, std::size_t ...i>
        auto type_name_impl1(std::index_sequence<i...>) {
            constexpr auto name = detail::type_name_impl2<T>();
            return hana::string<*(name.ptr + i)...>{};
        }
    } // end namespace detail

//! @ingroup group-experimental
    //! Returns a `hana::string` representing the name of the given type, at
    //! compile-time.
    //!
    //! This only works on Clang (and apparently MSVC, but Hana does not work
    //! there as of writing this). Original idea taken from
    //! https://github.com/Manu343726/ctti.
    template <typename T>
    auto type_name() {
        constexpr auto name = detail::type_name_impl2<T>();
        return detail::type_name_impl1<T>(std::make_index_sequence<name.length>{});
    }
} BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_EXPERIMENTAL_TYPE_NAME_HPP

/* @file Defines `boost::hana::experimental::type_name`. @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_EXPERIMENTAL_TYPE_NAME_HPP #define BOOST_HANA_EXPERIMENTAL_TYPE_NAME_HPP #include #include #include #include BOOST_HANA_NAMESPACE_BEGIN namespace experimental { namespace detail { struct cstring { char const* ptr; std::size_t length; }; // Note: We substract the null terminator from the string sizes below. template constexpr cstring type_name_impl2() { #if defined(__clang__) constexpr char const* pretty_function = __PRETTY_FUNCTION__; constexpr std::size_t total_size = sizeof(__PRETTY_FUNCTION__) - 1; constexpr std::size_t prefix_size = sizeof("boost::hana::experimental::detail::cstring boost::hana::experimental::detail::type_name_impl2() [T = ") - 1; constexpr std::size_t suffix_size = sizeof("]") - 1; #else #error "No support for this compiler." #endif return {pretty_function + prefix_size, total_size - prefix_size - suffix_size}; } template auto type_name_impl1(std::index_sequence) { constexpr auto name = detail::type_name_impl2(); return hana::string<*(name.ptr + i)...>{}; } } // end namespace detail //! @ingroup group-experimental //! Returns a `hana::string` representing the name of the given type, at //! compile-time. //! //! This only works on Clang (and apparently MSVC, but Hana does not work //! there as of writing this). Original idea taken from //! https://github.com/Manu343726/ctti. template auto type_name() { constexpr auto name = detail::type_name_impl2(); return detail::type_name_impl1(std::make_index_sequence{}); } } BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_EXPERIMENTAL_TYPE_NAME_HPP