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