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extern/draco/dracoenc/src/draco/core/status.h
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| // Copyright 2017 The Draco Authors. | |||||
| // | |||||
| // Licensed under the Apache License, Version 2.0 (the "License"); | |||||
| // you may not use this file except in compliance with the License. | |||||
| // You may obtain a copy of the License at | |||||
| // | |||||
| // http://www.apache.org/licenses/LICENSE-2.0 | |||||
| // | |||||
| // 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 DRACO_CORE_STATUS_H_ | |||||
| #define DRACO_CORE_STATUS_H_ | |||||
| #include <string> | |||||
| namespace draco { | |||||
| // Class encapsulating a return status of an operation with an optional error | |||||
| // message. Intended to be used as a return type for functions instead of bool. | |||||
| class Status { | |||||
| public: | |||||
| enum Code { | |||||
| OK = 0, | |||||
| ERROR = -1, // Used for general errors. | |||||
| IO_ERROR = -2, // Error when handling input or output stream. | |||||
| INVALID_PARAMETER = -3, // Invalid parameter passed to a function. | |||||
| UNSUPPORTED_VERSION = -4, // Input not compatible with the current version. | |||||
| UNKNOWN_VERSION = -5, // Input was created with an unknown version of | |||||
| // the library. | |||||
| }; | |||||
| Status() : code_(OK) {} | |||||
| Status(const Status &status) = default; | |||||
| Status(Status &&status) = default; | |||||
| explicit Status(Code code) : code_(code) {} | |||||
| Status(Code code, const std::string &error_msg) | |||||
| : code_(code), error_msg_(error_msg) {} | |||||
| Code code() const { return code_; } | |||||
| const std::string &error_msg_string() const { return error_msg_; } | |||||
| const char *error_msg() const { return error_msg_.c_str(); } | |||||
| bool operator==(Code code) const { return code == code_; } | |||||
| bool ok() const { return code_ == OK; } | |||||
| Status &operator=(const Status &) = default; | |||||
| private: | |||||
| Code code_; | |||||
| std::string error_msg_; | |||||
| }; | |||||
| inline std::ostream &operator<<(std::ostream &os, const Status &status) { | |||||
| os << status.error_msg_string(); | |||||
| return os; | |||||
| } | |||||
| inline Status OkStatus() { return Status(Status::OK); } | |||||
| // Evaluates an expression that returns draco::Status. If the status is not OK, | |||||
| // the macro returns the status object. | |||||
| #define DRACO_RETURN_IF_ERROR(expression) \ | |||||
| { \ | |||||
| const draco::Status _local_status = (expression); \ | |||||
| if (!_local_status.ok()) \ | |||||
| return _local_status; \ | |||||
| } | |||||
| } // namespace draco | |||||
| #endif // DRACO_CORE_STATUS_H_ | |||||