verdnatura-chat/ios/Pods/Folly/folly/ExceptionString.h

71 lines
1.8 KiB
C++

/*
* Copyright 2016-present Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <exception>
#include <string>
#include <type_traits>
#include <folly/Demangle.h>
#include <folly/FBString.h>
#include <folly/Portability.h>
namespace folly {
/**
* Debug string for an exception: include type and what(), if
* defined.
*/
inline fbstring exceptionStr(const std::exception& e) {
#ifdef FOLLY_HAS_RTTI
fbstring rv(demangle(typeid(e)));
rv += ": ";
#else
fbstring rv("Exception (no RTTI available): ");
#endif
rv += e.what();
return rv;
}
// Empirically, this indicates if the runtime supports
// std::exception_ptr, as not all (arm, for instance) do.
#if defined(__GNUC__) && defined(__GCC_ATOMIC_INT_LOCK_FREE) && \
__GCC_ATOMIC_INT_LOCK_FREE > 1
inline fbstring exceptionStr(std::exception_ptr ep) {
try {
std::rethrow_exception(ep);
} catch (const std::exception& e) {
return exceptionStr(e);
} catch (...) {
return "<unknown exception>";
}
}
#endif
template <typename E>
auto exceptionStr(const E& e) -> typename std::
enable_if<!std::is_base_of<std::exception, E>::value, fbstring>::type {
#ifdef FOLLY_HAS_RTTI
return demangle(typeid(e));
#else
(void)e;
return "Exception (no RTTI available) ";
#endif
}
} // namespace folly