mirror of https://gitee.com/bigwinds/arangodb
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2018 ArangoDB 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 Simon Grätzer
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_FUTURES_EXCEPTIONS_H
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#define ARANGODB_FUTURES_EXCEPTIONS_H 1
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#include <cstdint>
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#include <exception>
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namespace arangodb {
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namespace futures {
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enum class ErrorCode : uint8_t {
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BrokenPromise = 1,
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FutureAlreadyRetrieved = 2,
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FutureNotReady = 3,
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PromiseAlreadySatisfied = 4,
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NoState = 5
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};
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struct FutureException : public std::exception {
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FutureException(ErrorCode code) : _code(code) {}
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ErrorCode code() const noexcept { return _code; }
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char const* what() const noexcept override {
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switch (_code) {
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case ErrorCode::BrokenPromise:
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return "Promise abandoned the shared state";
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case ErrorCode::FutureAlreadyRetrieved:
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return "Future was already retrieved";
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case ErrorCode::FutureNotReady:
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return "Future is not ready";
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case ErrorCode::PromiseAlreadySatisfied:
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return "Promise was already satisfied";
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case ErrorCode::NoState:
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return "No shared state";
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default:
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return "invalid future exception";
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}
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}
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private:
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ErrorCode _code;
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};
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} // namespace futures
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} // namespace arangodb
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#endif
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