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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_COMMON_ASSERTANDRETURN_HH
#define DUNE_COMMON_ASSERTANDRETURN_HH
#ifndef DUNE_DISABLE_DEPRECATION_WARNING_ASSERT_AND_RETURN
#warning "The file assertandreturn.hh is deprecated. Since c++14 constexpr functions allow more \
than a single return statement and thus this utility is useless. Will be removed after \
Dune 2.10 release."
#endif // DUNE_DISABLE_DEPRECATION_WARNING_ASSERT_AND_RETURN
#include <cassert>
//! Asserts a condition and return on success in constexpr context.
/**
* The macro DUNE_ASSERT_AND_RETURN can be used as expression in the return
* statement of a constexpr function to have assert() and constexpr at the
* same time. It first uses assert for the condition given by the first argument
* and then returns the value of the second argument.
*
* \ingroup CxxUtilities
* \deprecated Will be removed after Dune 2.10 release
*/
#ifdef NDEBUG
#define DUNE_ASSERT_AND_RETURN(C,X) X
#else
#define DUNE_ASSERT_AND_RETURN(C,X) (!(C) ? throw [&](){assert(!#C);return 0;}() : 0), X
#endif
#endif // DUNE_COMMON_ASSERTANDRETURN_HH
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