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Remove core/type_traits.hpp (API Change):

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API Changes:

The core/type_traits.hpp public header has been removed and along with it
the type trait is_completion_handler. Beast uses the CompletionHandler correctness
checks provided by Asio. In a c++20 environment, these convert to concept checks.
This commit is contained in:
Richard Hodges
2020-06-02 16:51:19 +02:00
parent 92364b8db8
commit cba83c0b42
2 changed files with 5 additions and 58 deletions
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5
CHANGELOG.md
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* Remove `core/type_traits.hpp` (API Change)
* Remove `reset` function from `flat_static_buffer` (API Change) * Remove `reset` function from `flat_static_buffer` (API Change)
* Remove `mutable_data_type` from Dyanmic Buffers (API Change) * Remove `mutable_data_type` from Dyanmic Buffers (API Change)
* Remove deprecated lowest_layer from test::stream * Remove deprecated lowest_layer from test::stream
@ -8,6 +9,10 @@
API Changes: API Changes:
* The `core/type_traits.hpp` public header has been removed and along with it
the type trait `is_completion_handler`. Beast uses the CompletionHandler correctness
checks provided by Asio. In a c++20 environment, these convert to concept checks.
* The `reset` function has been removed from `flat_static_buffer`. Use the * The `reset` function has been removed from `flat_static_buffer`. Use the
`clear` function instead. `clear` function instead.

58
include/boost/beast/core/type_traits.hpp
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//
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// 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)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_TYPE_TRAITS_HPP
#define BOOST_BEAST_TYPE_TRAITS_HPP
#ifndef BOOST_BEAST_DOXYGEN
#include <boost/beast/core/detail/config.hpp>
#include <boost/beast/core/detail/is_invocable.hpp>
#include <boost/config/pragma_message.hpp>
#include <type_traits.hpp>
BOOST_PRAGMA_MESSAGE("<boost/beast/core/type_traits.hpp> is DEPRECATED and will be removed in a future release.")
namespace boost {
namespace beast {
/** Determine if `T` meets the requirements of <em>CompletionHandler</em>.
This trait checks whether a type meets the requirements for a completion
handler, and is also callable with the specified signature.
Metafunctions are used to perform compile time checking of template
types. This type will be `std::true_type` if `T` meets the requirements,
else the type will be `std::false_type`.
@par Example
Use with `static_assert`:
@code
struct handler
{
void operator()(error_code&);
};
static_assert(is_completion_handler<handler, void(error_code&)>::value,
"Not a completion handler");
@endcode
*/
template<class T, class Signature>
#if BOOST_BEAST_DOXYGEN
using is_completion_handler = __see_below__
#else
using is_completion_handler = std::integral_constant<bool,
std::is_move_constructible<typename std::decay<T>::type>::value &&
detail::is_invocable<T, Signature>::value>;
#endif
} // beast
} // boost
#endif
#endif