chore(3p/abseil_cpp): unvendor abseil_cpp r/3786

we weren't actually using these sources anymore, okay?

Change-Id: If701571d9716de308d3512e1eb22c35db0877a66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5248
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 817 deletions

diff --git a/third_party/abseil_cpp/absl/status/status.h b/third_party/abseil_cpp/absl/status/status.h
deleted file mode 100644
index c4d6fce09050..000000000000
--- a/third_party/abseil_cpp/absl/status/status.h
+++ /dev/null
@@ -1,817 +0,0 @@
-// 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.
-//
-// -----------------------------------------------------------------------------
-// File: status.h
-// -----------------------------------------------------------------------------
-//
-// This header file defines the Abseil `status` library, consisting of:
-//
-//   * An `absl::Status` class for holding error handling information
-//   * A set of canonical `absl::StatusCode` error codes, and associated
-//     utilities for generating and propagating status codes.
-//   * A set of helper functions for creating status codes and checking their
-//     values
-//
-// Within Google, `absl::Status` is the primary mechanism for gracefully
-// handling errors across API boundaries (and in particular across RPC
-// boundaries). Some of these errors may be recoverable, but others may not.
-// Most functions that can produce a recoverable error should be designed to
-// return an `absl::Status` (or `absl::StatusOr`).
-//
-// Example:
-//
-// absl::Status myFunction(absl::string_view fname, ...) {
-//   ...
-//   // encounter error
-//   if (error condition) {
-//     return absl::InvalidArgumentError("bad mode");
-//   }
-//   // else, return OK
-//   return absl::OkStatus();
-// }
-//
-// An `absl::Status` is designed to either return "OK" or one of a number of
-// different error codes, corresponding to typical error conditions.
-// In almost all cases, when using `absl::Status` you should use the canonical
-// error codes (of type `absl::StatusCode`) enumerated in this header file.
-// These canonical codes are understood across the codebase and will be
-// accepted across all API and RPC boundaries.
-#ifndef ABSL_STATUS_STATUS_H_
-#define ABSL_STATUS_STATUS_H_
-
-#include <iostream>
-#include <string>
-
-#include "absl/container/inlined_vector.h"
-#include "absl/status/internal/status_internal.h"
-#include "absl/strings/cord.h"
-#include "absl/types/optional.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-
-// absl::StatusCode
-//
-// An `absl::StatusCode` is an enumerated type indicating either no error ("OK")
-// or an error condition. In most cases, an `absl::Status` indicates a
-// recoverable error, and the purpose of signalling an error is to indicate what
-// action to take in response to that error. These error codes map to the proto
-// RPC error codes indicated in https://cloud.google.com/apis/design/errors.
-//
-// The errors listed below are the canonical errors associated with
-// `absl::Status` and are used throughout the codebase. As a result, these
-// error codes are somewhat generic.
-//
-// In general, try to return the most specific error that applies if more than
-// one error may pertain. For example, prefer `kOutOfRange` over
-// `kFailedPrecondition` if both codes apply. Similarly prefer `kNotFound` or
-// `kAlreadyExists` over `kFailedPrecondition`.
-//
-// Because these errors may travel RPC boundaries, these codes are tied to the
-// `google.rpc.Code` definitions within
-// https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto
-// The string value of these RPC codes is denoted within each enum below.
-//
-// If your error handling code requires more context, you can attach payloads
-// to your status. See `absl::Status::SetPayload()` and
-// `absl::Status::GetPayload()` below.
-enum class StatusCode : int {
-  // StatusCode::kOk
-  //
-  // kOK (gRPC code "OK") does not indicate an error; this value is returned on
-  // success. It is typical to check for this value before proceeding on any
-  // given call across an API or RPC boundary. To check this value, use the
-  // `absl::Status::ok()` member function rather than inspecting the raw code.
-  kOk = 0,
-
-  // StatusCode::kCancelled
-  //
-  // kCancelled (gRPC code "CANCELLED") indicates the operation was cancelled,
-  // typically by the caller.
-  kCancelled = 1,
-
-  // StatusCode::kUnknown
-  //
-  // kUnknown (gRPC code "UNKNOWN") indicates an unknown error occurred. In
-  // general, more specific errors should be raised, if possible. Errors raised
-  // by APIs that do not return enough error information may be converted to
-  // this error.
-  kUnknown = 2,
-
-  // StatusCode::kInvalidArgument
-  //
-  // kInvalidArgument (gRPC code "INVALID_ARGUMENT") indicates the caller
-  // specified an invalid argument, such a malformed filename. Note that such
-  // errors should be narrowly limited to indicate to the invalid nature of the
-  // arguments themselves. Errors with validly formed arguments that may cause
-  // errors with the state of the receiving system should be denoted with
-  // `kFailedPrecondition` instead.
-  kInvalidArgument = 3,
-
-  // StatusCode::kDeadlineExceeded
-  //
-  // kDeadlineExceeded (gRPC code "DEADLINE_EXCEEDED") indicates a deadline
-  // expired before the operation could complete. For operations that may change
-  // state within a system, this error may be returned even if the operation has
-  // completed successfully. For example, a successful response from a server
-  // could have been delayed long enough for the deadline to expire.
-  kDeadlineExceeded = 4,
-
-  // StatusCode::kNotFound
-  //
-  // kNotFound (gRPC code "NOT_FOUND") indicates some requested entity (such as
-  // a file or directory) was not found.
-  //
-  // `kNotFound` is useful if a request should be denied for an entire class of
-  // users, such as during a gradual feature rollout or undocumented allow list.
-  // If, instead, a request should be denied for specific sets of users, such as
-  // through user-based access control, use `kPermissionDenied` instead.
-  kNotFound = 5,
-
-  // StatusCode::kAlreadyExists
-  //
-  // kAlreadyExists (gRPC code "ALREADY_EXISTS") indicates the entity that a
-  // caller attempted to create (such as file or directory) is already present.
-  kAlreadyExists = 6,
-
-  // StatusCode::kPermissionDenied
-  //
-  // kPermissionDenied (gRPC code "PERMISSION_DENIED") indicates that the caller
-  // does not have permission to execute the specified operation. Note that this
-  // error is different than an error due to an *un*authenticated user. This
-  // error code does not imply the request is valid or the requested entity
-  // exists or satisfies any other pre-conditions.
-  //
-  // `kPermissionDenied` must not be used for rejections caused by exhausting
-  // some resource. Instead, use `kResourceExhausted` for those errors.
-  // `kPermissionDenied` must not be used if the caller cannot be identified.
-  // Instead, use `kUnauthenticated` for those errors.
-  kPermissionDenied = 7,
-
-  // StatusCode::kResourceExhausted
-  //
-  // kResourceExhausted (gRPC code "RESOURCE_EXHAUSTED") indicates some resource
-  // has been exhausted, perhaps a per-user quota, or perhaps the entire file
-  // system is out of space.
-  kResourceExhausted = 8,
-
-  // StatusCode::kFailedPrecondition
-  //
-  // kFailedPrecondition (gRPC code "FAILED_PRECONDITION") indicates that the
-  // operation was rejected because the system is not in a state required for
-  // the operation's execution. For example, a directory to be deleted may be
-  // non-empty, an "rmdir" operation is applied to a non-directory, etc.
-  //
-  // Some guidelines that may help a service implementer in deciding between
-  // `kFailedPrecondition`, `kAborted`, and `kUnavailable`:
-  //
-  //  (a) Use `kUnavailable` if the client can retry just the failing call.
-  //  (b) Use `kAborted` if the client should retry at a higher transaction
-  //      level (such as when a client-specified test-and-set fails, indicating
-  //      the client should restart a read-modify-write sequence).
-  //  (c) Use `kFailedPrecondition` if the client should not retry until
-  //      the system state has been explicitly fixed. For example, if an "rmdir"
-  //      fails because the directory is non-empty, `kFailedPrecondition`
-  //      should be returned since the client should not retry unless
-  //      the files are deleted from the directory.
-  kFailedPrecondition = 9,
-
-  // StatusCode::kAborted
-  //
-  // kAborted (gRPC code "ABORTED") indicates the operation was aborted,
-  // typically due to a concurrency issue such as a sequencer check failure or a
-  // failed transaction.
-  //
-  // See the guidelines above for deciding between `kFailedPrecondition`,
-  // `kAborted`, and `kUnavailable`.
-  kAborted = 10,
-
-  // StatusCode::kOutOfRange
-  //
-  // kOutOfRange (gRPC code "OUT_OF_RANGE") indicates the operation was
-  // attempted past the valid range, such as seeking or reading past an
-  // end-of-file.
-  //
-  // Unlike `kInvalidArgument`, this error indicates a problem that may
-  // be fixed if the system state changes. For example, a 32-bit file
-  // system will generate `kInvalidArgument` if asked to read at an
-  // offset that is not in the range [0,2^32-1], but it will generate
-  // `kOutOfRange` if asked to read from an offset past the current
-  // file size.
-  //
-  // There is a fair bit of overlap between `kFailedPrecondition` and
-  // `kOutOfRange`.  We recommend using `kOutOfRange` (the more specific
-  // error) when it applies so that callers who are iterating through
-  // a space can easily look for an `kOutOfRange` error to detect when
-  // they are done.
-  kOutOfRange = 11,
-
-  // StatusCode::kUnimplemented
-  //
-  // kUnimplemented (gRPC code "UNIMPLEMENTED") indicates the operation is not
-  // implemented or supported in this service. In this case, the operation
-  // should not be re-attempted.
-  kUnimplemented = 12,
-
-  // StatusCode::kInternal
-  //
-  // kInternal (gRPC code "INTERNAL") indicates an internal error has occurred
-  // and some invariants expected by the underlying system have not been
-  // satisfied. This error code is reserved for serious errors.
-  kInternal = 13,
-
-  // StatusCode::kUnavailable
-  //
-  // kUnavailable (gRPC code "UNAVAILABLE") indicates the service is currently
-  // unavailable and that this is most likely a transient condition. An error
-  // such as this can be corrected by retrying with a backoff scheme. Note that
-  // it is not always safe to retry non-idempotent operations.
-  //
-  // See the guidelines above for deciding between `kFailedPrecondition`,
-  // `kAborted`, and `kUnavailable`.
-  kUnavailable = 14,
-
-  // StatusCode::kDataLoss
-  //
-  // kDataLoss (gRPC code "DATA_LOSS") indicates that unrecoverable data loss or
-  // corruption has occurred. As this error is serious, proper alerting should
-  // be attached to errors such as this.
-  kDataLoss = 15,
-
-  // StatusCode::kUnauthenticated
-  //
-  // kUnauthenticated (gRPC code "UNAUTHENTICATED") indicates that the request
-  // does not have valid authentication credentials for the operation. Correct
-  // the authentication and try again.
-  kUnauthenticated = 16,
-
-  // StatusCode::DoNotUseReservedForFutureExpansionUseDefaultInSwitchInstead_
-  //
-  // NOTE: this error code entry should not be used and you should not rely on
-  // its value, which may change.
-  //
-  // The purpose of this enumerated value is to force people who handle status
-  // codes with `switch()` statements to *not* simply enumerate all possible
-  // values, but instead provide a "default:" case. Providing such a default
-  // case ensures that code will compile when new codes are added.
-  kDoNotUseReservedForFutureExpansionUseDefaultInSwitchInstead_ = 20
-};
-
-// StatusCodeToString()
-//
-// Returns the name for the status code, or "" if it is an unknown value.
-std::string StatusCodeToString(StatusCode code);
-
-// operator<<
-//
-// Streams StatusCodeToString(code) to `os`.
-std::ostream& operator<<(std::ostream& os, StatusCode code);
-
-// absl::Status
-//
-// The `absl::Status` class is generally used to gracefully handle errors
-// across API boundaries (and in particular across RPC boundaries). Some of
-// these errors may be recoverable, but others may not. Most
-// functions which can produce a recoverable error should be designed to return
-// either an `absl::Status` (or the similar `absl::StatusOr<T>`, which holds
-// either an object of type `T` or an error).
-//
-// API developers should construct their functions to return `absl::OkStatus()`
-// upon success, or an `absl::StatusCode` upon another type of error (e.g
-// an `absl::StatusCode::kInvalidArgument` error). The API provides convenience
-// functions to constuct each status code.
-//
-// Example:
-//
-// absl::Status myFunction(absl::string_view fname, ...) {
-//   ...
-//   // encounter error
-//   if (error condition) {
-//     // Construct an absl::StatusCode::kInvalidArgument error
-//     return absl::InvalidArgumentError("bad mode");
-//   }
-//   // else, return OK
-//   return absl::OkStatus();
-// }
-//
-// Users handling status error codes should prefer checking for an OK status
-// using the `ok()` member function. Handling multiple error codes may justify
-// use of switch statement, but only check for error codes you know how to
-// handle; do not try to exhaustively match against all canonical error codes.
-// Errors that cannot be handled should be logged and/or propagated for higher
-// levels to deal with. If you do use a switch statement, make sure that you
-// also provide a `default:` switch case, so that code does not break as other
-// canonical codes are added to the API.
-//
-// Example:
-//
-//   absl::Status result = DoSomething();
-//   if (!result.ok()) {
-//     LOG(ERROR) << result;
-//   }
-//
-//   // Provide a default if switching on multiple error codes
-//   switch (result.code()) {
-//     // The user hasn't authenticated. Ask them to reauth
-//     case absl::StatusCode::kUnauthenticated:
-//       DoReAuth();
-//       break;
-//     // The user does not have permission. Log an error.
-//     case absl::StatusCode::kPermissionDenied:
-//       LOG(ERROR) << result;
-//       break;
-//     // Propagate the error otherwise.
-//     default:
-//       return true;
-//   }
-//
-// An `absl::Status` can optionally include a payload with more information
-// about the error. Typically, this payload serves one of several purposes:
-//
-//   * It may provide more fine-grained semantic information about the error to
-//     facilitate actionable remedies.
-//   * It may provide human-readable contexual information that is more
-//     appropriate to display to an end user.
-//
-// Example:
-//
-//   absl::Status result = DoSomething();
-//   // Inform user to retry after 30 seconds
-//   // See more error details in googleapis/google/rpc/error_details.proto
-//   if (absl::IsResourceExhausted(result)) {
-//     google::rpc::RetryInfo info;
-//     info.retry_delay().seconds() = 30;
-//     // Payloads require a unique key (a URL to ensure no collisions with
-//     // other payloads), and an `absl::Cord` to hold the encoded data.
-//     absl::string_view url = "type.googleapis.com/google.rpc.RetryInfo";
-//     result.SetPayload(url, info.SerializeAsCord());
-//     return result;
-//   }
-//
-class ABSL_MUST_USE_RESULT Status final {
- public:
-  // Constructors
-
-  // This default constructor creates an OK status with no message or payload.
-  // Avoid this constructor and prefer explicit construction of an OK status
-  // with `absl::OkStatus()`.
-  Status();
-
-  // Creates a status in the canonical error space with the specified
-  // `absl::StatusCode` and error message.  If `code == absl::StatusCode::kOk`,
-  // `msg` is ignored and an object identical to an OK status is constructed.
-  //
-  // The `msg` string must be in UTF-8. The implementation may complain (e.g.,
-  // by printing a warning) if it is not.
-  Status(absl::StatusCode code, absl::string_view msg);
-
-  Status(const Status&);
-  Status& operator=(const Status& x);
-
-  // Move operators
-
-  // The moved-from state is valid but unspecified.
-  Status(Status&&) noexcept;
-  Status& operator=(Status&&);
-
-  ~Status();
-
-  // Status::Update()
-  //
-  // Updates the existing status with `new_status` provided that `this->ok()`.
-  // If the existing status already contains a non-OK error, this update has no
-  // effect and preserves the current data. Note that this behavior may change
-  // in the future to augment a current non-ok status with additional
-  // information about `new_status`.
-  //
-  // `Update()` provides a convenient way of keeping track of the first error
-  // encountered.
-  //
-  // Example:
-  //   // Instead of "if (overall_status.ok()) overall_status = new_status"
-  //   overall_status.Update(new_status);
-  //
-  void Update(const Status& new_status);
-  void Update(Status&& new_status);
-
-  // Status::ok()
-  //
-  // Returns `true` if `this->ok()`. Prefer checking for an OK status using this
-  // member function.
-  ABSL_MUST_USE_RESULT bool ok() const;
-
-  // Status::code()
-  //
-  // Returns the canonical error code of type `absl::StatusCode` of this status.
-  absl::StatusCode code() const;
-
-  // Status::raw_code()
-  //
-  // Returns a raw (canonical) error code corresponding to the enum value of
-  // `google.rpc.Code` definitions within
-  // https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto.
-  // These values could be out of the range of canonical `absl::StatusCode`
-  // enum values.
-  //
-  // NOTE: This function should only be called when converting to an associated
-  // wire format. Use `Status::code()` for error handling.
-  int raw_code() const;
-
-  // Status::message()
-  //
-  // Returns the error message associated with this error code, if available.
-  // Note that this message rarely describes the error code.  It is not unusual
-  // for the error message to be the empty string. As a result, prefer
-  // `Status::ToString()` for debug logging.
-  absl::string_view message() const;
-
-  friend bool operator==(const Status&, const Status&);
-  friend bool operator!=(const Status&, const Status&);
-
-  // Status::ToString()
-  //
-  // Returns a combination of the error code name, the message and any
-  // associated payload messages. This string is designed simply to be human
-  // readable and its exact format should not be load bearing. Do not depend on
-  // the exact format of the result of `ToString()` which is subject to change.
-  //
-  // The printed code name and the message are generally substrings of the
-  // result, and the payloads to be printed use the status payload printer
-  // mechanism (which is internal).
-  std::string ToString() const;
-
-  // Status::IgnoreError()
-  //
-  // Ignores any errors. This method does nothing except potentially suppress
-  // complaints from any tools that are checking that errors are not dropped on
-  // the floor.
-  void IgnoreError() const;
-
-  // swap()
-  //
-  // Swap the contents of one status with another.
-  friend void swap(Status& a, Status& b);
-
-  //----------------------------------------------------------------------------
-  // Payload Management APIs
-  //----------------------------------------------------------------------------
-
-  // A payload may be attached to a status to provide additional context to an
-  // error that may not be satisifed by an existing `absl::StatusCode`.
-  // Typically, this payload serves one of several purposes:
-  //
-  //   * It may provide more fine-grained semantic information about the error
-  //     to facilitate actionable remedies.
-  //   * It may provide human-readable contexual information that is more
-  //     appropriate to display to an end user.
-  //
-  // A payload consists of a [key,value] pair, where the key is a string
-  // referring to a unique "type URL" and the value is an object of type
-  // `absl::Cord` to hold the contextual data.
-  //
-  // The "type URL" should be unique and follow the format of a URL
-  // (https://en.wikipedia.org/wiki/URL) and, ideally, provide some
-  // documentation or schema on how to interpret its associated data. For
-  // example, the default type URL for a protobuf message type is
-  // "type.googleapis.com/packagename.messagename". Other custom wire formats
-  // should define the format of type URL in a similar practice so as to
-  // minimize the chance of conflict between type URLs.
-  // Users should ensure that the type URL can be mapped to a concrete
-  // C++ type if they want to deserialize the payload and read it effectively.
-  //
-  // To attach a payload to a status object, call `Status::SetPayload()`,
-  // passing it the type URL and an `absl::Cord` of associated data. Similarly,
-  // to extract the payload from a status, call `Status::GetPayload()`. You
-  // may attach multiple payloads (with differing type URLs) to any given
-  // status object, provided that the status is currently exhibiting an error
-  // code (i.e. is not OK).
-
-  // Status::GetPayload()
-  //
-  // Gets the payload of a status given its unique `type_url` key, if present.
-  absl::optional<absl::Cord> GetPayload(absl::string_view type_url) const;
-
-  // Status::SetPayload()
-  //
-  // Sets the payload for a non-ok status using a `type_url` key, overwriting
-  // any existing payload for that `type_url`.
-  //
-  // NOTE: This function does nothing if the Status is ok.
-  void SetPayload(absl::string_view type_url, absl::Cord payload);
-
-  // Status::ErasePayload()
-  //
-  // Erases the payload corresponding to the `type_url` key.  Returns `true` if
-  // the payload was present.
-  bool ErasePayload(absl::string_view type_url);
-
-  // Status::ForEachPayload()
-  //
-  // Iterates over the stored payloads and calls the
-  // `visitor(type_key, payload)` callable for each one.
-  //
-  // NOTE: The order of calls to `visitor()` is not specified and may change at
-  // any time.
-  //
-  // NOTE: Any mutation on the same 'absl::Status' object during visitation is
-  // forbidden and could result in undefined behavior.
-  void ForEachPayload(
-      const std::function<void(absl::string_view, const absl::Cord&)>& visitor)
-      const;
-
- private:
-  friend Status CancelledError();
-
-  // Creates a status in the canonical error space with the specified
-  // code, and an empty error message.
-  explicit Status(absl::StatusCode code);
-
-  static void UnrefNonInlined(uintptr_t rep);
-  static void Ref(uintptr_t rep);
-  static void Unref(uintptr_t rep);
-
-  // REQUIRES: !ok()
-  // Ensures rep_ is not shared with any other Status.
-  void PrepareToModify();
-
-  const status_internal::Payloads* GetPayloads() const;
-  status_internal::Payloads* GetPayloads();
-
-  // Takes ownership of payload.
-  static uintptr_t NewRep(absl::StatusCode code, absl::string_view msg,
-                          std::unique_ptr<status_internal::Payloads> payload);
-  static bool EqualsSlow(const absl::Status& a, const absl::Status& b);
-
-  // MSVC 14.0 limitation requires the const.
-  static constexpr const char kMovedFromString[] =
-      "Status accessed after move.";
-
-  static const std::string* EmptyString();
-  static const std::string* MovedFromString();
-
-  // Returns whether rep contains an inlined representation.
-  // See rep_ for details.
-  static bool IsInlined(uintptr_t rep);
-
-  // Indicates whether this Status was the rhs of a move operation. See rep_
-  // for details.
-  static bool IsMovedFrom(uintptr_t rep);
-  static uintptr_t MovedFromRep();
-
-  // Convert between error::Code and the inlined uintptr_t representation used
-  // by rep_. See rep_ for details.
-  static uintptr_t CodeToInlinedRep(absl::StatusCode code);
-  static absl::StatusCode InlinedRepToCode(uintptr_t rep);
-
-  // Converts between StatusRep* and the external uintptr_t representation used
-  // by rep_. See rep_ for details.
-  static uintptr_t PointerToRep(status_internal::StatusRep* r);
-  static status_internal::StatusRep* RepToPointer(uintptr_t r);
-
-  // Returns string for non-ok Status.
-  std::string ToStringSlow() const;
-
-  // Status supports two different representations.
-  //  - When the low bit is off it is an inlined representation.
-  //    It uses the canonical error space, no message or payload.
-  //    The error code is (rep_ >> 2).
-  //    The (rep_ & 2) bit is the "moved from" indicator, used in IsMovedFrom().
-  //  - When the low bit is on it is an external representation.
-  //    In this case all the data comes from a heap allocated Rep object.
-  //    (rep_ - 1) is a status_internal::StatusRep* pointer to that structure.
-  uintptr_t rep_;
-};
-
-// OkStatus()
-//
-// Returns an OK status, equivalent to a default constructed instance. Prefer
-// usage of `absl::OkStatus()` when constructing such an OK status.
-Status OkStatus();
-
-// operator<<()
-//
-// Prints a human-readable representation of `x` to `os`.
-std::ostream& operator<<(std::ostream& os, const Status& x);
-
-// IsAborted()
-// IsAlreadyExists()
-// IsCancelled()
-// IsDataLoss()
-// IsDeadlineExceeded()
-// IsFailedPrecondition()
-// IsInternal()
-// IsInvalidArgument()
-// IsNotFound()
-// IsOutOfRange()
-// IsPermissionDenied()
-// IsResourceExhausted()
-// IsUnauthenticated()
-// IsUnavailable()
-// IsUnimplemented()
-// IsUnknown()
-//
-// These convenience functions return `true` if a given status matches the
-// `absl::StatusCode` error code of its associated function.
-ABSL_MUST_USE_RESULT bool IsAborted(const Status& status);
-ABSL_MUST_USE_RESULT bool IsAlreadyExists(const Status& status);
-ABSL_MUST_USE_RESULT bool IsCancelled(const Status& status);
-ABSL_MUST_USE_RESULT bool IsDataLoss(const Status& status);
-ABSL_MUST_USE_RESULT bool IsDeadlineExceeded(const Status& status);
-ABSL_MUST_USE_RESULT bool IsFailedPrecondition(const Status& status);
-ABSL_MUST_USE_RESULT bool IsInternal(const Status& status);
-ABSL_MUST_USE_RESULT bool IsInvalidArgument(const Status& status);
-ABSL_MUST_USE_RESULT bool IsNotFound(const Status& status);
-ABSL_MUST_USE_RESULT bool IsOutOfRange(const Status& status);
-ABSL_MUST_USE_RESULT bool IsPermissionDenied(const Status& status);
-ABSL_MUST_USE_RESULT bool IsResourceExhausted(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnauthenticated(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnavailable(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnimplemented(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnknown(const Status& status);
-
-// AbortedError()
-// AlreadyExistsError()
-// CancelledError()
-// DataLossError()
-// DeadlineExceededError()
-// FailedPreconditionError()
-// InternalError()
-// InvalidArgumentError()
-// NotFoundError()
-// OutOfRangeError()
-// PermissionDeniedError()
-// ResourceExhaustedError()
-// UnauthenticatedError()
-// UnavailableError()
-// UnimplementedError()
-// UnknownError()
-//
-// These convenience functions create an `absl::Status` object with an error
-// code as indicated by the associated function name, using the error message
-// passed in `message`.
-Status AbortedError(absl::string_view message);
-Status AlreadyExistsError(absl::string_view message);
-Status CancelledError(absl::string_view message);
-Status DataLossError(absl::string_view message);
-Status DeadlineExceededError(absl::string_view message);
-Status FailedPreconditionError(absl::string_view message);
-Status InternalError(absl::string_view message);
-Status InvalidArgumentError(absl::string_view message);
-Status NotFoundError(absl::string_view message);
-Status OutOfRangeError(absl::string_view message);
-Status PermissionDeniedError(absl::string_view message);
-Status ResourceExhaustedError(absl::string_view message);
-Status UnauthenticatedError(absl::string_view message);
-Status UnavailableError(absl::string_view message);
-Status UnimplementedError(absl::string_view message);
-Status UnknownError(absl::string_view message);
-
-//------------------------------------------------------------------------------
-// Implementation details follow
-//------------------------------------------------------------------------------
-
-inline Status::Status() : rep_(CodeToInlinedRep(absl::StatusCode::kOk)) {}
-
-inline Status::Status(absl::StatusCode code) : rep_(CodeToInlinedRep(code)) {}
-
-inline Status::Status(const Status& x) : rep_(x.rep_) { Ref(rep_); }
-
-inline Status& Status::operator=(const Status& x) {
-  uintptr_t old_rep = rep_;
-  if (x.rep_ != old_rep) {
-    Ref(x.rep_);
-    rep_ = x.rep_;
-    Unref(old_rep);
-  }
-  return *this;
-}
-
-inline Status::Status(Status&& x) noexcept : rep_(x.rep_) {
-  x.rep_ = MovedFromRep();
-}
-
-inline Status& Status::operator=(Status&& x) {
-  uintptr_t old_rep = rep_;
-  rep_ = x.rep_;
-  x.rep_ = MovedFromRep();
-  Unref(old_rep);
-  return *this;
-}
-
-inline void Status::Update(const Status& new_status) {
-  if (ok()) {
-    *this = new_status;
-  }
-}
-
-inline void Status::Update(Status&& new_status) {
-  if (ok()) {
-    *this = std::move(new_status);
-  }
-}
-
-inline Status::~Status() { Unref(rep_); }
-
-inline bool Status::ok() const {
-  return rep_ == CodeToInlinedRep(absl::StatusCode::kOk);
-}
-
-inline absl::string_view Status::message() const {
-  return !IsInlined(rep_)
-             ? RepToPointer(rep_)->message
-             : (IsMovedFrom(rep_) ? absl::string_view(kMovedFromString)
-                                  : absl::string_view());
-}
-
-inline bool operator==(const Status& lhs, const Status& rhs) {
-  return lhs.rep_ == rhs.rep_ || Status::EqualsSlow(lhs, rhs);
-}
-
-inline bool operator!=(const Status& lhs, const Status& rhs) {
-  return !(lhs == rhs);
-}
-
-inline std::string Status::ToString() const {
-  return ok() ? "OK" : ToStringSlow();
-}
-
-inline void Status::IgnoreError() const {
-  // no-op
-}
-
-inline void swap(absl::Status& a, absl::Status& b) {
-  using std::swap;
-  swap(a.rep_, b.rep_);
-}
-
-inline const status_internal::Payloads* Status::GetPayloads() const {
-  return IsInlined(rep_) ? nullptr : RepToPointer(rep_)->payloads.get();
-}
-
-inline status_internal::Payloads* Status::GetPayloads() {
-  return IsInlined(rep_) ? nullptr : RepToPointer(rep_)->payloads.get();
-}
-
-inline bool Status::IsInlined(uintptr_t rep) { return (rep & 1) == 0; }
-
-inline bool Status::IsMovedFrom(uintptr_t rep) {
-  return IsInlined(rep) && (rep & 2) != 0;
-}
-
-inline uintptr_t Status::MovedFromRep() {
-  return CodeToInlinedRep(absl::StatusCode::kInternal) | 2;
-}
-
-inline uintptr_t Status::CodeToInlinedRep(absl::StatusCode code) {
-  return static_cast<uintptr_t>(code) << 2;
-}
-
-inline absl::StatusCode Status::InlinedRepToCode(uintptr_t rep) {
-  assert(IsInlined(rep));
-  return static_cast<absl::StatusCode>(rep >> 2);
-}
-
-inline status_internal::StatusRep* Status::RepToPointer(uintptr_t rep) {
-  assert(!IsInlined(rep));
-  return reinterpret_cast<status_internal::StatusRep*>(rep - 1);
-}
-
-inline uintptr_t Status::PointerToRep(status_internal::StatusRep* rep) {
-  return reinterpret_cast<uintptr_t>(rep) + 1;
-}
-
-inline void Status::Ref(uintptr_t rep) {
-  if (!IsInlined(rep)) {
-    RepToPointer(rep)->ref.fetch_add(1, std::memory_order_relaxed);
-  }
-}
-
-inline void Status::Unref(uintptr_t rep) {
-  if (!IsInlined(rep)) {
-    UnrefNonInlined(rep);
-  }
-}
-
-inline Status OkStatus() { return Status(); }
-
-// Creates a `Status` object with the `absl::StatusCode::kCancelled` error code
-// and an empty message. It is provided only for efficiency, given that
-// message-less kCancelled errors are common in the infrastructure.
-inline Status CancelledError() { return Status(absl::StatusCode::kCancelled); }
-
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_STATUS_STATUS_H_