1 /* 2 * Copyright (c) Facebook, Inc. and its affiliates. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <folly/ExceptionString.h> 18 19 #include <utility> 20 21 #include <folly/Demangle.h> 22 #include <folly/lang/Exception.h> 23 #include <folly/lang/TypeInfo.h> 24 25 namespace folly { 26 27 namespace { 28 exception_string_type(std::type_info const * ti)29fbstring exception_string_type(std::type_info const* ti) { 30 return ti ? demangle(*ti) : "<unknown exception>"; 31 } 32 33 } // namespace 34 35 /** 36 * Debug string for an exception: include type and what(), if 37 * defined. 38 */ exceptionStr(std::exception const & e)39fbstring exceptionStr(std::exception const& e) { 40 auto prefix = exception_string_type(folly::type_info_of(e)); 41 return std::move(prefix) + ": " + e.what(); 42 } 43 exceptionStr(std::exception_ptr const & ep)44fbstring exceptionStr(std::exception_ptr const& ep) { 45 if (auto ex = exception_ptr_get_object<std::exception>(ep)) { 46 return exceptionStr(*ex); 47 } 48 return exception_string_type(exception_ptr_get_type(ep)); 49 } 50 51 } // namespace folly 52