bad_variant_access.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2021 Tobias Hienzsch
 
#ifndef TETL_VARIANT_BAD_VARIANT_ACCESS_HPP
#define TETL_VARIANT_BAD_VARIANT_ACCESS_HPP
 
#include <etl/_exception/exception.hpp>
 
namespace etl {
 
/// \brief etl::bad_variant_access is the type of the exception thrown in the
/// following situations: (1) etl::get(etl::variant) called with an index or
/// type that does not match the currently active alternative. (2) etl::visit
/// called to visit a variant that is valueless_by_exception
struct bad_variant_access : exception {
    constexpr bad_variant_access() = default;
 
    constexpr explicit bad_variant_access(char const* what)
        : exception{what}
    {
    }
};
 
} // namespace etl
 
#endif // TETL_VARIANT_BAD_VARIANT_ACCESS_HPP