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- /**
- * Tencent is pleased to support the open source community by making Tars available.
- *
- * Copyright (C) 2016THL A29 Limited, a Tencent company. All rights reserved.
- *
- * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- *
- * https://opensource.org/licenses/BSD-3-Clause
- *
- * 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.
- */
- #ifndef _TARS_EXCEPTION_H_
- #define _TARS_EXCEPTION_H_
- #include <exception>
- #include <memory>
- #include <cstring>
- #include <string>
- namespace tars {
-
- class ExceptionBase : public std::exception {
- public:
- ExceptionBase() {}
- ~ExceptionBase() throw() override {}
- const char* what() const throw() override
- {
- return "exception_base";
- }
- virtual ExceptionBase* clone() const
- {
- return new ExceptionBase(*this);
- }
- virtual int code() const { return -1; }
- virtual void rethrow() const { throw *this; }
- };
- class Exception : public ExceptionBase {
- public:
- Exception(const std::string& info, const int code = 0)
- : m_info(info)
- , m_code(code)
- {
- if (code != 0)
- m_info = m_info + ":" + std::strerror(code);
- }
- ~Exception() throw() override
- {
- }
- const char* what() const throw() override
- {
- return m_info.c_str();
- }
- ExceptionBase* clone() const override
- {
- return new Exception(*this);
- }
- int code() const override { return m_code; }
- void rethrow() const override { throw *this; }
- protected:
- std::string m_info;
- int m_code;
- };
- using ExceptionPtr = std::shared_ptr<ExceptionBase>;
- inline ExceptionPtr currentException()
- {
- try {
- throw;
- } catch (Exception& e) {
- return ExceptionPtr(e.clone());
- } catch (ExceptionBase& e) {
- return ExceptionPtr(e.clone());
- } catch (std::exception& e) {
- return ExceptionPtr(new Exception(std::string(e.what())));
- } catch (...) {
- }
- return ExceptionPtr(new Exception("unknow_exception"));
- }
- inline ExceptionPtr copyException(const std::string& e, int err)
- {
- try {
- throw Exception(e, err);
- } catch (...) {
- return currentException();
- }
- }
- } // end namespace tars
- #endif
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