absl/status/statusor.cc

// Copyright 2020 The Abseil 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
//
//      https://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.
#include "absl/status/statusor.h"

#include <cstdlib>
#include <utility>

#include "absl/base/internal/raw_logging.h"
#include "absl/status/status.h"
#include "absl/strings/str_cat.h"

namespace absl {
ABSL_NAMESPACE_BEGIN

BadStatusOrAccess::BadStatusOrAccess(absl::Status status)
    : status_(std::move(status)) {}

BadStatusOrAccess::~BadStatusOrAccess() = default;
const char* BadStatusOrAccess::what() const noexcept {
  return "Bad StatusOr access";
}

const absl::Status& BadStatusOrAccess::status() const { return status_; }

namespace internal_statusor {

void Helper::HandleInvalidStatusCtorArg(absl::Status* status) {
  const char* kMessage =
      "An OK status is not a valid constructor argument to StatusOr<T>";
#ifdef NDEBUG
  ABSL_INTERNAL_LOG(ERROR, kMessage);
#else
  ABSL_INTERNAL_LOG(FATAL, kMessage);
#endif
  // In optimized builds, we will fall back to InternalError.
  *status = absl::InternalError(kMessage);
}

void Helper::Crash(const absl::Status& status) {
  ABSL_INTERNAL_LOG(
      FATAL,
      absl::StrCat("Attempting to fetch value instead of handling error ",
                   status.ToString()));
}

void ThrowBadStatusOrAccess(absl::Status status) {
#ifdef ABSL_HAVE_EXCEPTIONS
  throw absl::BadStatusOrAccess(std::move(status));
#else
  ABSL_INTERNAL_LOG(
      FATAL,
      absl::StrCat("Attempting to fetch value instead of handling error ",
                   status.ToString()));
  std::abort();
#endif
}

}  // namespace internal_statusor
ABSL_NAMESPACE_END
}  // namespace absl