Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/GRPCClient/private/NSError+GRPC.m

-/* Copyright (c) 2009, Google Inc.
+/*
+ *
+ * Copyright 2015, Google Inc.
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * ---
- * This file is a Win32-specific part of spinlock_internal.cc
  */
 
+#import "NSError+GRPC.h"
 
-#include <windows.h>
+#include <grpc/grpc.h>
 
-namespace base {
-namespace internal {
+NSString * const kGRPCErrorDomain = @"io.grpc";
 
-void SpinLockDelay(volatile Atomic32 *w, int32 value, int loop) {
-  if (loop == 0) {
-  } else if (loop == 1) {
-    Sleep(0);
-  } else {
-    Sleep(base::internal::SuggestedDelayNS(loop) / 1000000);
+@implementation NSError (GRPC)
++ (instancetype)grpc_errorFromStatusCode:(grpc_status_code)statusCode details:(char *)details {
+  if (statusCode == GRPC_STATUS_OK) {
+    return nil;
   }
+  NSString *message = [NSString stringWithCString:details encoding:NSASCIIStringEncoding];
+  return [NSError errorWithDomain:kGRPCErrorDomain
+                             code:statusCode
+                         userInfo:@{NSLocalizedDescriptionKey: message}];
 }
-
-void SpinLockWake(volatile Atomic32 *w, bool all) {
-}
-
-} // namespace internal
-} // namespace base
+@end