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/*
* Copyright 2016-2018 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Exception.hxx"
template<typename T>
static void
AppendNestedMessage(std::string &result, T &&e,
const char *fallback, const char *separator) noexcept
{
try {
std::rethrow_if_nested(std::forward<T>(e));
} catch (const std::exception &nested) {
result += separator;
result += nested.what();
AppendNestedMessage(result, nested, fallback, separator);
} catch (const std::nested_exception &ne) {
AppendNestedMessage(result, ne, fallback, separator);
} catch (...) {
result += separator;
result += fallback;
}
}
std::string
GetFullMessage(const std::exception &e,
const char *fallback, const char *separator) noexcept
{
std::string result = e.what();
AppendNestedMessage(result, e, fallback, separator);
return result;
}
std::string
GetFullMessage(std::exception_ptr ep,
const char *fallback, const char *separator) noexcept
{
try {
std::rethrow_exception(ep);
} catch (const std::exception &e) {
return GetFullMessage(e, fallback, separator);
} catch (const std::nested_exception &ne) {
return GetFullMessage(ne.nested_ptr(), fallback, separator);
} catch (...) {
return fallback;
}
}
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