src/google/protobuf/stubs/status.cc

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// contributors may be used to endorse or promote products derived from
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//
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#include <google/protobuf/stubs/status.h>

#include <ostream>
#include <stdio.h>
#include <string>
#include <utility>

namespace google {
namespace protobuf {
namespace util {
namespace status_internal {
namespace {

inline std::string StatusCodeToString(StatusCode code) {
  switch (code) {
    case StatusCode::kOk:
      return "OK";
    case StatusCode::kCancelled:
      return "CANCELLED";
    case StatusCode::kUnknown:
      return "UNKNOWN";
    case StatusCode::kInvalidArgument:
      return "INVALID_ARGUMENT";
    case StatusCode::kDeadlineExceeded:
      return "DEADLINE_EXCEEDED";
    case StatusCode::kNotFound:
      return "NOT_FOUND";
    case StatusCode::kAlreadyExists:
      return "ALREADY_EXISTS";
    case StatusCode::kPermissionDenied:
      return "PERMISSION_DENIED";
    case StatusCode::kUnauthenticated:
      return "UNAUTHENTICATED";
    case StatusCode::kResourceExhausted:
      return "RESOURCE_EXHAUSTED";
    case StatusCode::kFailedPrecondition:
      return "FAILED_PRECONDITION";
    case StatusCode::kAborted:
      return "ABORTED";
    case StatusCode::kOutOfRange:
      return "OUT_OF_RANGE";
    case StatusCode::kUnimplemented:
      return "UNIMPLEMENTED";
    case StatusCode::kInternal:
      return "INTERNAL";
    case StatusCode::kUnavailable:
      return "UNAVAILABLE";
    case StatusCode::kDataLoss:
      return "DATA_LOSS";
  }

  // No default clause, clang will abort if a code is missing from
  // above switch.
  return "UNKNOWN";
}

}  // namespace

const Status Status::OK = Status();
const Status Status::CANCELLED = Status(StatusCode::kCancelled, "");
const Status Status::UNKNOWN = Status(StatusCode::kUnknown, "");

Status::Status() : error_code_(StatusCode::kOk) {
}

Status::Status(StatusCode error_code, StringPiece error_message)
    : error_code_(error_code) {
  if (error_code != StatusCode::kOk) {
    error_message_ = error_message.ToString();
  }
}

Status::Status(const Status& other)
    : error_code_(other.error_code_), error_message_(other.error_message_) {
}

Status& Status::operator=(const Status& other) {
  error_code_ = other.error_code_;
  error_message_ = other.error_message_;
  return *this;
}

bool Status::operator==(const Status& x) const {
  return error_code_ == x.error_code_ &&
      error_message_ == x.error_message_;
}

std::string Status::ToString() const {
  if (error_code_ == StatusCode::kOk) {
    return "OK";
  } else {
    if (error_message_.empty()) {
      return StatusCodeToString(error_code_);
    } else {
      return StatusCodeToString(error_code_) + ":" +
          error_message_;
    }
  }
}

std::ostream& operator<<(std::ostream& os, const Status& x) {
  os << x.ToString();
  return os;
}

}  // namespace status_internal
}  // namespace util
}  // namespace protobuf
}  // namespace google