base/ios/ns_error_util.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_IOS_NS_ERROR_UTIL_H_
   6 #define BASE_IOS_NS_ERROR_UTIL_H_
   7
   8 @class NSError;
   9
  10 namespace base {
  11 namespace ios {
  12
  13 // Iterates through |error|'s underlying errors and returns the first error for
  14 // which there is no underlying error.
  15 NSError* GetFinalUnderlyingErrorFromError(NSError* error);
  16
  17 // Returns a copy of |original_error| with |underlying_error| appended to the
  18 // end of its underlying error chain.
  19 NSError* ErrorWithAppendedUnderlyingError(NSError* original_error,
  20                                           NSError* underlying_error);
  21
  22 }  // namespace ios
  23 }  // namespace base
  24
  25 #endif  // BASE_IOS_NS_ERROR_UTIL_H_