mirror of https://gitee.com/bigwinds/arangodb
139 lines
4.9 KiB
C++
139 lines
4.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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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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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_BASICS_EXCEPTIONS_H
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#define ARANGODB_BASICS_EXCEPTIONS_H 1
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#include <exception>
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#include <new>
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#include <string>
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#include <utility>
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#include "Basics/Result.h"
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#include "Basics/error.h"
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#include "Basics/voc-errors.h"
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/// @brief throws an arango exception with an error code
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#define THROW_ARANGO_EXCEPTION(code) \
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throw arangodb::basics::Exception(code, __FILE__, __LINE__)
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/// @brief throws an arango exception with an error code and arbitrary
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/// arguments (to be inserted in printf-style manner)
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#define THROW_ARANGO_EXCEPTION_PARAMS(code, ...) \
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throw arangodb::basics::Exception(code, \
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arangodb::basics::Exception::FillExceptionString(code, __VA_ARGS__), \
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__FILE__, __LINE__)
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/// @brief throws an arango exception with an error code and arbitrary
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/// arguments (to be inserted in printf-style manner)
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#define THROW_ARANGO_EXCEPTION_FORMAT(code, format, ...) \
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throw arangodb::basics::Exception(code, \
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arangodb::basics::Exception::FillFormatExceptionString( \
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"%s: " format, TRI_errno_string(code), __VA_ARGS__), \
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__FILE__, __LINE__)
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/// @brief throws an arango exception with an error code and an already-built
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/// error message
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#define THROW_ARANGO_EXCEPTION_MESSAGE(code, message) \
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throw arangodb::basics::Exception(code, message, __FILE__, __LINE__)
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/// @brief throws an arango result if the result fails
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#define THROW_ARANGO_EXCEPTION_IF_FAIL(result) \
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do { \
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if ((result).fail()) { \
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throw arangodb::basics::Exception((result), __FILE__, __LINE__); \
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} \
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} while (0);
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namespace arangodb {
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namespace basics {
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/// @brief arango exception type
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class Exception final : public virtual std::exception {
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public:
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static std::string FillExceptionString(int, ...);
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static std::string FillFormatExceptionString(char const* format, ...);
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static void SetVerbose(bool);
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public:
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Exception(int code, char const* file, int line);
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Exception(Result const&, char const* file, int line);
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Exception(Result&&, char const* file, int line);
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Exception(int code, std::string const& errorMessage, char const* file, int line);
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Exception(int code, std::string&& errorMessage, char const* file, int line);
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Exception(int code, char const* errorMessage, char const* file, int line);
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~Exception() = default;
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public:
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char const* what() const noexcept override;
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std::string const& message() const noexcept;
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int code() const noexcept;
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void addToMessage(std::string const&);
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private:
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void appendLocation() noexcept;
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protected:
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std::string _errorMessage;
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char const* _file;
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int const _line;
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int const _code;
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};
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template <typename F>
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Result catchToResult(F&& fn, int defaultError = TRI_ERROR_INTERNAL) {
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// TODO check whether there are other specific exceptions we should catch
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Result result{TRI_ERROR_NO_ERROR};
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try {
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result = std::forward<F>(fn)();
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} catch (arangodb::basics::Exception const& e) {
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result.reset(e.code(), e.message());
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} catch (std::bad_alloc const&) {
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result.reset(TRI_ERROR_OUT_OF_MEMORY);
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} catch (std::exception const& e) {
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result.reset(defaultError, e.what());
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} catch (...) {
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result.reset(defaultError);
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}
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return result;
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}
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template <typename F>
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Result catchVoidToResult(F&& fn, int defaultError = TRI_ERROR_INTERNAL) {
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auto wrapped = [&fn]() -> Result {
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std::forward<F>(fn)();
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return Result{TRI_ERROR_NO_ERROR};
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};
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return catchToResult(wrapped, defaultError);
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}
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} // namespace basics
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} // namespace arangodb
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#endif
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