Abseil Common Libraries (C++) (grcp 依赖)
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103 lines
3.0 KiB
103 lines
3.0 KiB
// Copyright 2020 The Abseil Authors. |
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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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// https://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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#include "absl/status/statusor.h" |
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#include <cstdlib> |
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#include <utility> |
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#include "absl/base/call_once.h" |
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#include "absl/base/internal/raw_logging.h" |
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#include "absl/status/status.h" |
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#include "absl/strings/str_cat.h" |
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namespace absl { |
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ABSL_NAMESPACE_BEGIN |
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BadStatusOrAccess::BadStatusOrAccess(absl::Status status) |
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: status_(std::move(status)) {} |
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BadStatusOrAccess::BadStatusOrAccess(const BadStatusOrAccess& other) |
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: status_(other.status_) {} |
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BadStatusOrAccess& BadStatusOrAccess::operator=( |
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const BadStatusOrAccess& other) { |
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// Ensure assignment is correct regardless of whether this->InitWhat() has |
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// already been called. |
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other.InitWhat(); |
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status_ = other.status_; |
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what_ = other.what_; |
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return *this; |
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} |
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BadStatusOrAccess& BadStatusOrAccess::operator=(BadStatusOrAccess&& other) { |
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// Ensure assignment is correct regardless of whether this->InitWhat() has |
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// already been called. |
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other.InitWhat(); |
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status_ = std::move(other.status_); |
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what_ = std::move(other.what_); |
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return *this; |
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} |
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BadStatusOrAccess::BadStatusOrAccess(BadStatusOrAccess&& other) |
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: status_(std::move(other.status_)) {} |
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const char* BadStatusOrAccess::what() const noexcept { |
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InitWhat(); |
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return what_.c_str(); |
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} |
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const absl::Status& BadStatusOrAccess::status() const { return status_; } |
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void BadStatusOrAccess::InitWhat() const { |
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absl::call_once(init_what_, [this] { |
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what_ = absl::StrCat("Bad StatusOr access: ", status_.ToString()); |
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}); |
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} |
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namespace internal_statusor { |
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void Helper::HandleInvalidStatusCtorArg(absl::Status* status) { |
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const char* kMessage = |
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"An OK status is not a valid constructor argument to StatusOr<T>"; |
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#ifdef NDEBUG |
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ABSL_INTERNAL_LOG(ERROR, kMessage); |
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#else |
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ABSL_INTERNAL_LOG(FATAL, kMessage); |
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#endif |
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// In optimized builds, we will fall back to InternalError. |
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*status = absl::InternalError(kMessage); |
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} |
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void Helper::Crash(const absl::Status& status) { |
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ABSL_INTERNAL_LOG( |
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FATAL, |
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absl::StrCat("Attempting to fetch value instead of handling error ", |
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status.ToString())); |
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} |
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void ThrowBadStatusOrAccess(absl::Status status) { |
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#ifdef ABSL_HAVE_EXCEPTIONS |
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throw absl::BadStatusOrAccess(std::move(status)); |
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#else |
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ABSL_INTERNAL_LOG( |
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FATAL, |
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absl::StrCat("Attempting to fetch value instead of handling error ", |
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status.ToString())); |
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std::abort(); |
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#endif |
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} |
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} // namespace internal_statusor |
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ABSL_NAMESPACE_END |
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} // namespace absl
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