初始化提交

WebDriverAgentLib/Utilities/FBErrorBuilder.m

@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "FBErrorBuilder.h"
+
+static NSString *const FBWebServerErrorDomain = @"com.facebook.WebDriverAgent";
+
+@interface FBErrorBuilder ()
+@property (nonatomic, copy) NSString *errorDescription;
+@property (nonatomic, strong) NSError *innerError;
+@end
+
+@implementation FBErrorBuilder
+
++ (instancetype)builder
+{
+  return [FBErrorBuilder new];
+}
+
+- (instancetype)withDescription:(NSString *)description
+{
+  self.errorDescription = description;
+  return self;
+}
+
+- (instancetype)withDescriptionFormat:(NSString *)format, ...
+{
+  va_list argList;
+  va_start(argList, format);
+  self.errorDescription = [[NSString alloc] initWithFormat:format arguments:argList];
+  va_end(argList);
+  return self;
+}
+
+- (instancetype)withInnerError:(NSError *)error
+{
+  self.innerError = error;
+  return self;
+}
+
+- (BOOL)buildError:(NSError **)errorOut
+{
+  if (errorOut) {
+    *errorOut = [self build];
+  }
+  return NO;
+}
+
+- (NSError *)build
+{
+  return
+  [NSError errorWithDomain:FBWebServerErrorDomain
+                      code:1
+                  userInfo:[self buildUserInfo]
+   ];
+}
+
+- (NSDictionary *)buildUserInfo
+{
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (self.errorDescription) {
+    userInfo[NSLocalizedDescriptionKey] = self.errorDescription;
+  }
+  if (self.innerError) {
+    userInfo[NSUnderlyingErrorKey] = self.innerError;
+  }
+  return userInfo.copy;
+}
+
+@end