THUAI6/CAPI/cpp/grpc/include/absl/status/internal/status_internal.h

// Copyright 2019 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.
#ifndef ABSL_STATUS_INTERNAL_STATUS_INTERNAL_H_
#define ABSL_STATUS_INTERNAL_STATUS_INTERNAL_H_

#include <string>
#include <utility>

#include "absl/base/attributes.h"
#include "absl/container/inlined_vector.h"
#include "absl/strings/cord.h"

#ifndef SWIG
// Disabled for SWIG as it doesn't parse attributes correctly.
namespace absl
{
    ABSL_NAMESPACE_BEGIN
// Returned Status objects may not be ignored. Codesearch doesn't handle ifdefs
// as part of a class definitions (b/6995610), so we use a forward declaration.
//
// TODO(b/176172494): ABSL_MUST_USE_RESULT should expand to the more strict
// [[nodiscard]]. For now, just use [[nodiscard]] directly when it is available.
#if ABSL_HAVE_CPP_ATTRIBUTE(nodiscard)
    class [[nodiscard]] Status;
#else
    class ABSL_MUST_USE_RESULT Status;
#endif
    ABSL_NAMESPACE_END
}  // namespace absl
#endif  // !SWIG

namespace absl
{
    ABSL_NAMESPACE_BEGIN

    enum class StatusCode : int;

    namespace status_internal
    {

        // Container for status payloads.
        struct Payload
        {
            std::string type_url;
            absl::Cord payload;
        };

        using Payloads = absl::InlinedVector<Payload, 1>;

        // Reference-counted representation of Status data.
        struct StatusRep
        {
            StatusRep(absl::StatusCode code_arg, absl::string_view message_arg, std::unique_ptr<status_internal::Payloads> payloads_arg) :
                ref(int32_t{1}),
                code(code_arg),
                message(message_arg),
                payloads(std::move(payloads_arg))
            {
            }

            std::atomic<int32_t> ref;
            absl::StatusCode code;
            std::string message;
            std::unique_ptr<status_internal::Payloads> payloads;
        };

        absl::StatusCode MapToLocalCode(int value);

        // Returns a pointer to a newly-allocated string with the given `prefix`,
        // suitable for output as an error message in assertion/`CHECK()` failures.
        //
        // This is an internal implementation detail for Abseil logging.
        std::string* MakeCheckFailString(const absl::Status* status, const char* prefix);

    }  // namespace status_internal

    ABSL_NAMESPACE_END
}  // namespace absl

#endif  // ABSL_STATUS_INTERNAL_STATUS_INTERNAL_H_