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https://github.com/matrix-construct/construct
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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_UTIL_NOTHROW_H
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//
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// Template nothrow suite
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//
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namespace ircd {
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namespace util {
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/// Test for template geworfenheit
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///
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template<class exception_t>
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constexpr bool
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is_nothrow()
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{
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return std::is_same<exception_t, std::nothrow_t>::value;
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}
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/// This is a template alternative to nothrow overloads, which
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/// allows keeping the function arguments sanitized of the thrownness.
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///
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template<class exception_t = std::nothrow_t,
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class return_t = bool>
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using nothrow_overload = typename std::enable_if<is_nothrow<exception_t>(), return_t>::type;
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/// Inverse of the nothrow_overload template
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///
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template<class exception_t,
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class return_t = void>
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using throw_overload = typename std::enable_if<!is_nothrow<exception_t>(), return_t>::type;
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} // namespace util
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} // namespace ircd
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