Add clang-format options and script; apply to FirebaseCore (#151)

19 files changed, 148 insertions, 156 deletions

diff --git a/Firebase/Core/FIRAnalyticsConfiguration.m b/Firebase/Core/FIRAnalyticsConfiguration.m
index cec3771..4fff0c1 100644
--- a/Firebase/Core/FIRAnalyticsConfiguration.m
+++ b/Firebase/Core/FIRAnalyticsConfiguration.m
@@ -33,7 +33,7 @@
   }
   [[NSNotificationCenter defaultCenter] postNotificationName:name
                                                       object:self
-                                                    userInfo:@{ name : value }];
+                                                    userInfo:@{name : value}];
 }
 
 - (void)setMinimumSessionInterval:(NSTimeInterval)minimumSessionInterval {
diff --git a/Firebase/Core/FIRApp.m b/Firebase/Core/FIRApp.m
index 95ed174..cdfb126 100644
--- a/Firebase/Core/FIRApp.m
+++ b/Firebase/Core/FIRApp.m
@@ -15,9 +15,9 @@
 #include <sys/utsname.h>
 
 #import "FIRApp.h"
+#import "FIRConfiguration.h"
 #import "Private/FIRAppInternal.h"
 #import "Private/FIRBundleUtil.h"
-#import "FIRConfiguration.h"
 #import "Private/FIRLogger.h"
 #import "Private/FIROptionsInternal.h"
 
@@ -109,8 +109,9 @@ static FIRApp *sDefaultApp;
                       kFIRAppDiagnosticsConfigurationTypeKey : @(FIRConfigTypeCore),
                       kFIRAppDiagnosticsErrorKey : [FIRApp errorForMissingOptions]
                     }];
-    [NSException raise:kFirebaseCoreErrorDomain format:@"Please check there is a valid "
-                                                       @"GoogleService-Info.plist in the project."];
+    [NSException raise:kFirebaseCoreErrorDomain
+                format:@"Please check there is a valid "
+                       @"GoogleService-Info.plist in the project."];
   }
   [FIRApp configureDefaultAppWithOptions:options sendingNotifications:NO];
 }
@@ -150,13 +151,12 @@ static FIRApp *sDefaultApp;
   NSString *lowerCaseName = [name lowercaseString];
   for (NSInteger charIndex = 0; charIndex < lowerCaseName.length; charIndex++) {
     char character = [lowerCaseName characterAtIndex:charIndex];
-     if (!((character >= 'a' && character <= 'z')
-           || (character >= '0' && character <= '9')
-           || character == '_'
-           || character == '-'))  {
-       [NSException raise:kFirebaseCoreErrorDomain format:@"App name should only contain Letters, "
-                                                      @"Numbers, Underscores, and Dashes."];
-     }
+    if (!((character >= 'a' && character <= 'z') || (character >= '0' && character <= '9') ||
+          character == '_' || character == '-')) {
+      [NSException raise:kFirebaseCoreErrorDomain
+                  format:@"App name should only contain Letters, "
+                         @"Numbers, Underscores, and Dashes."];
+    }
   }
 
   if (sAllApps && sAllApps[name]) {
@@ -179,7 +179,8 @@ static FIRApp *sDefaultApp;
   if (sDefaultApp) {
     return sDefaultApp;
   }
-  FIRLogError(kFIRLoggerCore, @"I-COR000003", @"The default Firebase app has not yet been "
+  FIRLogError(kFIRLoggerCore, @"I-COR000003",
+              @"The default Firebase app has not yet been "
               @"configured. Add `[FIRApp configure];` (`FirebaseApp.configure()` in Swift) to your "
               @"application initialization. Read more: https://goo.gl/ctyzm8.");
   return nil;
@@ -224,9 +225,7 @@ static FIRApp *sDefaultApp;
         sDefaultApp = nil;
       }
       if (!self.alreadySentDeleteNotification) {
-        NSDictionary *appInfoDict = @ {
-          kFIRAppNameKey : self.name
-        };
+        NSDictionary *appInfoDict = @{kFIRAppNameKey : self.name};
         [[NSNotificationCenter defaultCenter] postNotificationName:kFIRAppDeleteNotification
                                                             object:[self class]
                                                           userInfo:appInfoDict];
@@ -299,7 +298,8 @@ static FIRApp *sDefaultApp;
   }
 
   if (NSClassFromString(@"FIRAppIndexing") != nil) {
-    FIRLogDebug(kFIRLoggerCore, @"I-COR000024", @"Firebase App Indexing on iOS is deprecated. "
+    FIRLogDebug(kFIRLoggerCore, @"I-COR000024",
+                @"Firebase App Indexing on iOS is deprecated. "
                 @"You don't need to take any action at this time. Learn more about Firebase App "
                 @"Indexing at https://firebase.google.com/docs/app-indexing/.");
   }
@@ -336,7 +336,7 @@ static FIRApp *sDefaultApp;
 
 + (void)sendNotificationsToSDKs:(FIRApp *)app {
   NSNumber *isDefaultApp = [NSNumber numberWithBool:(app == sDefaultApp)];
-  NSDictionary *appInfoDict = @ {
+  NSDictionary *appInfoDict = @{
     kFIRAppNameKey : app.name,
     kFIRAppIsDefaultAppKey : isDefaultApp,
     kFIRGoogleAppIDKey : app.options.googleAppID
@@ -362,20 +362,17 @@ static FIRApp *sDefaultApp;
                                                     reason:(NSString *)reason {
   NSString *description =
       [NSString stringWithFormat:@"Configuration failed for service %@.", service];
-  NSDictionary *errorDict = @{
-    NSLocalizedDescriptionKey : description,
-    NSLocalizedFailureReasonErrorKey : reason
-  };
+  NSDictionary *errorDict =
+      @{NSLocalizedDescriptionKey : description, NSLocalizedFailureReasonErrorKey : reason};
   return FIRCreateError(domain, code, errorDict);
 }
 
 + (NSError *)errorForInvalidAppID {
   NSDictionary *errorDict = @{
-      NSLocalizedDescriptionKey :
-      @"Unable to validate Google App ID",
-      NSLocalizedRecoverySuggestionErrorKey :
-      @"Check formatting and location of GoogleService-Info.plist or GoogleAppID set in the "
-      @"customized options."
+    NSLocalizedDescriptionKey : @"Unable to validate Google App ID",
+    NSLocalizedRecoverySuggestionErrorKey :
+        @"Check formatting and location of GoogleService-Info.plist or GoogleAppID set in the "
+        @"customized options."
   };
   return FIRCreateError(kFirebaseCoreErrorDomain, FIRErrorCodeInvalidAppID, errorDict);
 }
@@ -391,14 +388,15 @@ static FIRApp *sDefaultApp;
   // backward compatibility.
   if (expectedBundleID != nil &&
       ![FIRBundleUtil hasBundleIdentifier:expectedBundleID inBundles:bundles]) {
-    FIRLogInfo(kFIRLoggerCore, @"I-COR000008", @"The project's Bundle ID is inconsistent with "
-                @"either the Bundle ID in '%@.%@', or the Bundle ID in the options if you are "
-                @"using a customized options. To ensure that everything can be configured "
-                @"correctly, you may need to make the Bundle IDs consistent. To continue with this "
-                @"plist file, you may change your app's bundle identifier to '%@'. Or you can "
-                @"download a new configuration file that matches your bundle identifier from %@ "
-                @"and replace the current one.", kServiceInfoFileName, kServiceInfoFileType,
-                expectedBundleID, kPlistURL);
+    FIRLogInfo(kFIRLoggerCore, @"I-COR000008",
+               @"The project's Bundle ID is inconsistent with "
+               @"either the Bundle ID in '%@.%@', or the Bundle ID in the options if you are "
+               @"using a customized options. To ensure that everything can be configured "
+               @"correctly, you may need to make the Bundle IDs consistent. To continue with this "
+               @"plist file, you may change your app's bundle identifier to '%@'. Or you can "
+               @"download a new configuration file that matches your bundle identifier from %@ "
+               @"and replace the current one.",
+               kServiceInfoFileName, kServiceInfoFileType, expectedBundleID, kPlistURL);
   }
 }
 
@@ -421,16 +419,16 @@ static FIRApp *sDefaultApp;
 - (BOOL)isAppIDValid {
   NSString *appID = _options.googleAppID;
   BOOL isValid = [FIRApp validateAppID:appID];
-  if (!isValid){
+  if (!isValid) {
     NSString *expectedBundleID = [self expectedBundleID];
-    FIRLogError(kFIRLoggerCore, @"I-COR000009", @"The GOOGLE_APP_ID either in the plist file "
+    FIRLogError(kFIRLoggerCore, @"I-COR000009",
+                @"The GOOGLE_APP_ID either in the plist file "
                 @"'%@.%@' or the one set in the customized options is invalid. If you are using "
                 @"the plist file, use the iOS version of bundle identifier to download the file, "
                 @"and do not manually edit the GOOGLE_APP_ID. You may change your app's bundle "
                 @"identifier to '%@'. Or you can download a new configuration file that matches "
                 @"your bundle identifier from %@ and replace the current one.",
                 kServiceInfoFileName, kServiceInfoFileType, expectedBundleID, kPlistURL);
-
   };
   return isValid;
 }
@@ -583,7 +581,7 @@ static FIRApp *sDefaultApp;
 
 - (void)sendLogsWithServiceName:(NSString *)serviceName
                         version:(NSString *)version
-                          error:(NSError *)error{
+                          error:(NSError *)error {
   NSMutableDictionary *userInfo = [[NSMutableDictionary alloc] initWithDictionary:@{
     kFIRAppDiagnosticsConfigurationTypeKey : @(FIRConfigTypeSDK),
     kFIRAppDiagnosticsSDKNameKey : serviceName,
@@ -593,10 +591,9 @@ static FIRApp *sDefaultApp;
   if (error) {
     userInfo[kFIRAppDiagnosticsErrorKey] = error;
   }
-  [[NSNotificationCenter defaultCenter]
-      postNotificationName:kFIRAppDiagnosticsNotification
-                    object:nil
-                  userInfo:userInfo];
+  [[NSNotificationCenter defaultCenter] postNotificationName:kFIRAppDiagnosticsNotification
+                                                      object:nil
+                                                    userInfo:userInfo];
 }
 
 @end
diff --git a/Firebase/Core/FIRConfiguration.m b/Firebase/Core/FIRConfiguration.m
index 921aa48..02617ef 100644
--- a/Firebase/Core/FIRConfiguration.m
+++ b/Firebase/Core/FIRConfiguration.m
@@ -47,5 +47,4 @@ extern void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel);
   FIRSetLoggerLevel(loggerLevel);
 }
 
-
 @end
diff --git a/Firebase/Core/FIRLogger.m b/Firebase/Core/FIRLogger.m
index 92fc7b4..eac8dc0 100644
--- a/Firebase/Core/FIRLogger.m
+++ b/Firebase/Core/FIRLogger.m
@@ -20,9 +20,9 @@
 #include <asl.h>
 #include <assert.h>
 #include <stdbool.h>
+#include <sys/sysctl.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include <sys/sysctl.h>
 
 FIRLoggerService kFIRLoggerABTesting = @"[Firebase/ABTesting]";
 FIRLoggerService kFIRLoggerAdMob = @"[Firebase/AdMob]";
@@ -90,10 +90,10 @@ void FIRLoggerInitializeASL() {
     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
     BOOL debugMode = [userDefaults boolForKey:kFIRPersistedDebugModeKey];
 
-    if ([arguments containsObject:kFIRDisableDebugModeApplicationArgument]) { // Default mode
+    if ([arguments containsObject:kFIRDisableDebugModeApplicationArgument]) {  // Default mode
       [userDefaults removeObjectForKey:kFIRPersistedDebugModeKey];
-    } else if ([arguments containsObject:kFIREnableDebugModeApplicationArgument]
-               || debugMode) { // Debug mode
+    } else if ([arguments containsObject:kFIREnableDebugModeApplicationArgument] ||
+               debugMode) {  // Debug mode
       [userDefaults setBool:YES forKey:kFIRPersistedDebugModeKey];
       asl_set_filter(sFIRLoggerClient, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG));
       sFIRLoggerDebugMode = YES;
@@ -105,8 +105,8 @@ void FIRLoggerInitializeASL() {
     }
 
     // Need to call asl_add_output_file so that the logs can appear in Xcode's console view. Set
-    // the ASL filter mask for this output file up to debug level so that all messages are viewable
-    // in the console.
+    // the ASL filter mask for this output file up to debug level so that all messages are
+    // viewable in the console.
     asl_add_output_file(sFIRLoggerClient, STDERR_FILENO, kFIRLoggerCustomASLMessageFormat,
                         ASL_TIME_FMT_LCL, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG), ASL_ENCODE_SAFE);
 
@@ -166,21 +166,18 @@ void FIRResetLogger() {
   [[NSUserDefaults standardUserDefaults] removeObjectForKey:kFIRPersistedDebugModeKey];
 }
 
-aslclient getFIRLoggerClient() {
-  return sFIRLoggerClient;
-}
+aslclient getFIRLoggerClient() { return sFIRLoggerClient; }
 
-dispatch_queue_t getFIRClientQueue() {
-  return sFIRClientQueue;
-}
+dispatch_queue_t getFIRClientQueue() { return sFIRClientQueue; }
 
-BOOL getFIRLoggerDebugMode() {
-  return sFIRLoggerDebugMode;
-}
+BOOL getFIRLoggerDebugMode() { return sFIRLoggerDebugMode; }
 #endif
 
-void FIRLogBasic(FIRLoggerLevel level, FIRLoggerService service, NSString *messageCode,
-                 NSString *message, va_list args_ptr) {
+void FIRLogBasic(FIRLoggerLevel level,
+                 FIRLoggerService service,
+                 NSString *messageCode,
+                 NSString *message,
+                 va_list args_ptr) {
   FIRLoggerInitializeASL();
   BOOL canLog = level <= sFIRLoggerMaximumLevel;
 
@@ -215,13 +212,13 @@ void FIRLogBasic(FIRLoggerLevel level, FIRLoggerService service, NSString *messa
  * Calling FIRLogDebug(kFIRLoggerCore, @"I-COR000001", @"Configure succeed.") shows:
  * yyyy-mm-dd hh:mm:ss.SSS sender[PID] <Debug> [Firebase/Core][I-COR000001] Configure succeed.
  */
-#define FIR_LOGGING_FUNCTION(level) \
-void FIRLog##level(FIRLoggerService service, NSString *messageCode, NSString *message, ...) { \
-  va_list args_ptr; \
-  va_start(args_ptr, message); \
-  FIRLogBasic(FIRLoggerLevel##level, service, messageCode, message, args_ptr); \
-  va_end(args_ptr); \
-}
+#define FIR_LOGGING_FUNCTION(level)                                                             \
+  void FIRLog##level(FIRLoggerService service, NSString *messageCode, NSString *message, ...) { \
+    va_list args_ptr;                                                                           \
+    va_start(args_ptr, message);                                                                \
+    FIRLogBasic(FIRLoggerLevel##level, service, messageCode, message, args_ptr);                \
+    va_end(args_ptr);                                                                           \
+  }
 
 FIR_LOGGING_FUNCTION(Error)
 FIR_LOGGING_FUNCTION(Warning)
diff --git a/Firebase/Core/FIRNetwork.m b/Firebase/Core/FIRNetwork.m
index 4926b2f..f1278ed 100644
--- a/Firebase/Core/FIRNetwork.m
+++ b/Firebase/Core/FIRNetwork.m
@@ -15,10 +15,10 @@
 #import "Private/FIRNetwork.h"
 #import "Private/FIRNetworkMessageCode.h"
 
+#import "Private/FIRLogger.h"
 #import "Private/FIRMutableDictionary.h"
 #import "Private/FIRNetworkConstants.h"
 #import "Private/FIRReachabilityChecker.h"
-#import "Private/FIRLogger.h"
 
 #import <GoogleToolboxForMac/GTMNSData+zlib.h>
 
@@ -46,7 +46,7 @@ static NSString *const kFIRNetworkPOSTRequestMethod = @"POST";
 /// Default constant string as a prefix for network logger.
 static NSString *const kFIRNetworkLogTag = @"Firebase/Network";
 
-@interface FIRNetwork ()<FIRReachabilityDelegate, FIRNetworkLoggerDelegate>
+@interface FIRNetwork () <FIRReachabilityDelegate, FIRNetworkLoggerDelegate>
 @end
 
 @implementation FIRNetwork {
@@ -65,10 +65,9 @@ static NSString *const kFIRNetworkLogTag = @"Firebase/Network";
   self = [super init];
   if (self) {
     // Setup reachability.
-    _reachability =
-        [[FIRReachabilityChecker alloc] initWithReachabilityDelegate:self
-                                                      loggerDelegate:self
-                                                            withHost:reachabilityHost];
+    _reachability = [[FIRReachabilityChecker alloc] initWithReachabilityDelegate:self
+                                                                  loggerDelegate:self
+                                                                        withHost:reachabilityHost];
     if (![_reachability start]) {
       return nil;
     }
@@ -169,7 +168,7 @@ static NSString *const kFIRNetworkLogTag = @"Firebase/Network";
   }
 
   [self firNetwork_logWithLevel:kFIRNetworkLogLevelDebug
-                       messageCode:kFIRNetworkMessageCodeNetwork000
+                    messageCode:kFIRNetworkMessageCodeNetwork000
                         message:@"Uploading data. Host"
                         context:url];
   _requests[requestID] = fetcher;
@@ -362,7 +361,8 @@ static NSString *FIRLogLevelDescriptionFromLogLevel(FIRNetworkLogLevel logLevel)
 }
 
 /// Returns a formatted string to be used for console logging.
-static NSString *FIRStringWithLogMessage(NSString *message, FIRNetworkLogLevel logLevel,
+static NSString *FIRStringWithLogMessage(NSString *message,
+                                         FIRNetworkLogLevel logLevel,
                                          NSArray *contexts) {
   if (!message) {
     message = @"(Message was nil)";
diff --git a/Firebase/Core/FIRNetworkConstants.m b/Firebase/Core/FIRNetworkConstants.m
index 7ba0e15..a92e0e2 100644
--- a/Firebase/Core/FIRNetworkConstants.m
+++ b/Firebase/Core/FIRNetworkConstants.m
@@ -21,7 +21,7 @@ NSString *const kFIRNetworkBackgroundSessionConfigIDPrefix =
 NSString *const kFIRNetworkApplicationSupportSubdirectory = @"Firebase/Network";
 NSString *const kFIRNetworkTempDirectoryName = @"FIRNetworkTemporaryDirectory";
 const NSTimeInterval kFIRNetworkTempFolderExpireTime = 60 * 60;  // 1 hour
-const NSTimeInterval kFIRNetworkTimeOutInterval = 60;  // 1 minute.
+const NSTimeInterval kFIRNetworkTimeOutInterval = 60;            // 1 minute.
 NSString *const kFIRNetworkReachabilityHost = @"app-measurement.com";
 NSString *const kFIRNetworkErrorContext = @"Context";
 
diff --git a/Firebase/Core/FIRNetworkURLSession.m b/Firebase/Core/FIRNetworkURLSession.m
index 0e023e6..e27a194 100644
--- a/Firebase/Core/FIRNetworkURLSession.m
+++ b/Firebase/Core/FIRNetworkURLSession.m
@@ -16,10 +16,10 @@
 
 #import "Private/FIRNetworkURLSession.h"
 
+#import "Private/FIRLogger.h"
 #import "Private/FIRMutableDictionary.h"
 #import "Private/FIRNetworkConstants.h"
 #import "Private/FIRNetworkMessageCode.h"
-#import "Private/FIRLogger.h"
 
 @implementation FIRNetworkURLSession {
   /// The handler to be called when the request completes or error has occurs.
@@ -54,8 +54,7 @@
         NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
     NSString *applicationSupportDirectory = paths.firstObject;
     NSArray *tempPathComponents = @[
-      applicationSupportDirectory,
-      kFIRNetworkApplicationSupportSubdirectory,
+      applicationSupportDirectory, kFIRNetworkApplicationSupportSubdirectory,
       kFIRNetworkTempDirectoryName
     ];
     _networkDirectoryURL = [NSURL fileURLWithPathComponents:tempPathComponents];
@@ -432,18 +431,16 @@
 
 /// Creates a background session configuration with the session ID using the supported method.
 - (NSURLSessionConfiguration *)backgroundSessionConfigWithSessionID:(NSString *)sessionID {
-  #if (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&          \
-      MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_10) ||   \
-      (TARGET_OS_IOS && defined(__IPHONE_8_0) &&                    \
-      __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_8_0)
+#if (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&         \
+     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_10) || \
+    (TARGET_OS_IOS && defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_8_0)
 
   // iOS 8/10.10 builds require the new backgroundSessionConfiguration method name.
   return [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:sessionID];
 
-  #elif (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&        \
-        MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10) ||  \
-        (TARGET_OS_IOS && defined(__IPHONE_8_0) &&                  \
-        __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0)
+#elif (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&        \
+       MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10) || \
+    (TARGET_OS_IOS && defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0)
 
   // Do a runtime check to avoid a deprecation warning about using
   // +backgroundSessionConfiguration: on iOS 8.
@@ -456,10 +453,10 @@
     return [NSURLSessionConfiguration backgroundSessionConfiguration:sessionID];
   }
 
-  #else
+#else
   // Building with an SDK earlier than iOS 8/OS X 10.10.
   return [NSURLSessionConfiguration backgroundSessionConfiguration:sessionID];
-  #endif
+#endif
 }
 
 - (void)maybeRemoveTempFilesAtURL:(NSURL *)folderURL expiringTime:(NSTimeInterval)staleTime {
@@ -623,10 +620,8 @@
                     newRequest:(NSURLRequest *)request
              completionHandler:(void (^)(NSURLRequest *))completionHandler {
   NSArray *nonAllowedRedirectionCodes = @[
-    @(kFIRNetworkHTTPStatusCodeFound),
-    @(kFIRNetworkHTTPStatusCodeMovedPermanently),
-    @(kFIRNetworkHTTPStatusCodeMovedTemporarily),
-    @(kFIRNetworkHTTPStatusCodeMultipleChoices)
+    @(kFIRNetworkHTTPStatusCodeFound), @(kFIRNetworkHTTPStatusCodeMovedPermanently),
+    @(kFIRNetworkHTTPStatusCodeMovedTemporarily), @(kFIRNetworkHTTPStatusCodeMultipleChoices)
   ];
 
   // Allow those not in the non allowed list to be followed.
@@ -655,7 +650,7 @@
     [_loggerDelegate firNetwork_logWithLevel:kFIRNetworkLogLevelError
                                  messageCode:kFIRNetworkMessageCodeURLSession017
                                      message:@"Encounter network error. Code, error"
-                                    contexts:@[@(error.code), error]];
+                                    contexts:@[ @(error.code), error ]];
   }
 
   if (handler) {
diff --git a/Firebase/Core/FIROptions.m b/Firebase/Core/FIROptions.m
index 3395767..b2bdce8 100644
--- a/Firebase/Core/FIROptions.m
+++ b/Firebase/Core/FIROptions.m
@@ -39,11 +39,10 @@ NSString *const kFIRIsAnalyticsEnabled = @"IS_ANALYTICS_ENABLED";
 NSString *const kFIRIsSignInEnabled = @"IS_SIGNIN_ENABLED";
 
 // Library version ID.
-NSString *const kFIRLibraryVersionID =
-    @"4"     // Major version (one or more digits)
-    @"00"    // Minor version (exactly 2 digits)
-    @"04"    // Build number (exactly 2 digits)
-    @"000";  // Fixed "000"
+NSString *const kFIRLibraryVersionID = @"4"     // Major version (one or more digits)
+                                       @"00"    // Minor version (exactly 2 digits)
+                                       @"04"    // Build number (exactly 2 digits)
+                                       @"000";  // Fixed "000"
 // Plist file name.
 NSString *const kServiceInfoFileName = @"GoogleService-Info";
 // Plist file type.
@@ -90,8 +89,7 @@ static NSDictionary *sDefaultOptionsDictionary = nil;
     return nil;
   }
 
-  sDefaultOptions =
-      [[FIROptions alloc] initInternalWithOptionsDictionary:defaultOptionsDictionary];
+  sDefaultOptions = [[FIROptions alloc] initInternalWithOptionsDictionary:defaultOptionsDictionary];
   return sDefaultOptions;
 }
 
@@ -108,7 +106,8 @@ static NSDictionary *sDefaultOptionsDictionary = nil;
   sDefaultOptionsDictionary = [NSDictionary dictionaryWithContentsOfFile:plistFilePath];
   if (sDefaultOptionsDictionary == nil) {
     FIRLogError(kFIRLoggerCore, @"I-COR000011", @"The configuration file is not a dictionary: "
-                @"'%@.%@'.", kServiceInfoFileName, kServiceInfoFileType);
+                                                @"'%@.%@'.",
+                kServiceInfoFileName, kServiceInfoFileType);
   }
   return sDefaultOptionsDictionary;
 }
@@ -205,7 +204,8 @@ static NSDictionary *sDefaultOptionsDictionary = nil;
     _optionsDictionary = [[NSDictionary dictionaryWithContentsOfFile:plistPath] mutableCopy];
     if (_optionsDictionary == nil) {
       FIRLogError(kFIRLoggerCore, @"I-COR000014", @"The configuration file at %@ does not exist or "
-                  @"is not a well-formed plist file.", plistPath);
+                                                  @"is not a well-formed plist file.",
+                  plistPath);
       return nil;
     }
     // TODO: Do we want to validate the dictionary here? It says we do that already in
@@ -214,8 +214,7 @@ static NSDictionary *sDefaultOptionsDictionary = nil;
   return self;
 }
 
-- (instancetype)initWithGoogleAppID:(NSString *)googleAppID
-                        GCMSenderID:(NSString *)GCMSenderID {
+- (instancetype)initWithGoogleAppID:(NSString *)googleAppID GCMSenderID:(NSString *)GCMSenderID {
   self = [super init];
   if (self) {
     NSMutableDictionary *mutableOptionsDict = [NSMutableDictionary dictionary];
@@ -369,9 +368,10 @@ static NSDictionary *sDefaultOptionsDictionary = nil;
   dispatch_once(&_createAnalyticsOptionsDictionaryOnce, ^{
     NSMutableDictionary *tempAnalyticsOptions = [[NSMutableDictionary alloc] init];
     NSDictionary *mainInfoDictionary = [NSBundle mainBundle].infoDictionary;
-    NSArray *measurementKeys = @[ kFIRIsMeasurementEnabled,
-                                  kFIRIsAnalyticsCollectionEnabled,
-                                  kFIRIsAnalyticsCollectionDeactivated ];
+    NSArray *measurementKeys = @[
+      kFIRIsMeasurementEnabled, kFIRIsAnalyticsCollectionEnabled,
+      kFIRIsAnalyticsCollectionDeactivated
+    ];
     for (NSString *key in measurementKeys) {
       id value = mainInfoDictionary[key] ?: self.optionsDictionary[key] ?: nil;
       if (!value) {
diff --git a/Firebase/Core/FIRReachabilityChecker.m b/Firebase/Core/FIRReachabilityChecker.m
index bc21a52..34bb764 100644
--- a/Firebase/Core/FIRReachabilityChecker.m
+++ b/Firebase/Core/FIRReachabilityChecker.m
@@ -14,15 +14,16 @@
 
 #import <Foundation/Foundation.h>
 
-#import "Private/FIRReachabilityChecker.h"
 #import "Private/FIRReachabilityChecker+Internal.h"
+#import "Private/FIRReachabilityChecker.h"
 
+#import "Private/FIRLogger.h"
 #import "Private/FIRNetwork.h"
 #import "Private/FIRNetworkMessageCode.h"
-#import "Private/FIRLogger.h"
 
 static void ReachabilityCallback(SCNetworkReachabilityRef reachability,
-                                 SCNetworkReachabilityFlags flags, void *info);
+                                 SCNetworkReachabilityFlags flags,
+                                 void *info);
 
 static const struct FIRReachabilityApi kFIRDefaultReachabilityApi = {
     SCNetworkReachabilityCreateWithName,
@@ -78,11 +79,10 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
 - (void)setReachabilityDelegate:(id<FIRReachabilityDelegate>)reachabilityDelegate {
   if (reachabilityDelegate &&
       (![(NSObject *)reachabilityDelegate conformsToProtocol:@protocol(FIRReachabilityDelegate)])) {
-    FIRLogError(
-        kFIRLoggerCore,
-        [NSString stringWithFormat:@"I-NET%06ld",
-        (long)kFIRNetworkMessageCodeReachabilityChecker005],
-        @"Reachability delegate doesn't conform to Reachability protocol.");
+    FIRLogError(kFIRLoggerCore,
+                [NSString stringWithFormat:@"I-NET%06ld",
+                                           (long)kFIRNetworkMessageCodeReachabilityChecker005],
+                @"Reachability delegate doesn't conform to Reachability protocol.");
     return;
   }
   reachabilityDelegate_ = reachabilityDelegate;
@@ -91,11 +91,10 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
 - (void)setLoggerDelegate:(id<FIRNetworkLoggerDelegate>)loggerDelegate {
   if (loggerDelegate &&
       (![(NSObject *)loggerDelegate conformsToProtocol:@protocol(FIRNetworkLoggerDelegate)])) {
-    FIRLogError(
-        kFIRLoggerCore,
-        [NSString stringWithFormat:@"I-NET%06ld",
-        (long)kFIRNetworkMessageCodeReachabilityChecker006],
-        @"Reachability delegate doesn't conform to Logger protocol.");
+    FIRLogError(kFIRLoggerCore,
+                [NSString stringWithFormat:@"I-NET%06ld",
+                                           (long)kFIRNetworkMessageCodeReachabilityChecker006],
+                @"Reachability delegate doesn't conform to Logger protocol.");
     return;
   }
   loggerDelegate_ = loggerDelegate;
@@ -137,11 +136,11 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
       return NO;
     }
     SCNetworkReachabilityContext context = {
-        0, /* version */
+        0,                       /* version */
         (__bridge void *)(self), /* info (passed as last parameter to reachability callback) */
-        NULL, /* retain */
-        NULL, /* release */
-        NULL /* copyDescription */
+        NULL,                    /* retain */
+        NULL,                    /* release */
+        NULL                     /* copyDescription */
     };
     if (!reachabilityApi_->setCallbackFn(reachability_, ReachabilityCallback, &context) ||
         !reachabilityApi_->scheduleWithRunLoopFn(reachability_, CFRunLoopGetMain(),
@@ -176,24 +175,24 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
   if (flags & kSCNetworkReachabilityFlagsReachable) {
     // Reachable flag is set. Check further flags.
     if (!(flags & kSCNetworkReachabilityFlagsConnectionRequired)) {
-      // Connection required flag is not set, so we have connectivity.
-      #if TARGET_OS_IOS
+// Connection required flag is not set, so we have connectivity.
+#if TARGET_OS_IOS
       status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular
                                                            : kFIRReachabilityViaWifi;
-      #elif TARGET_OS_OSX
+#elif TARGET_OS_OSX
       status = kFIRReachabilityViaWifi;
-      #endif
+#endif
     } else if ((flags & (kSCNetworkReachabilityFlagsConnectionOnDemand |
                          kSCNetworkReachabilityFlagsConnectionOnTraffic)) &&
                !(flags & kSCNetworkReachabilityFlagsInterventionRequired)) {
-      // If the connection on demand or connection on traffic flag is set, and user intervention
-      // is not required, we have connectivity.
-      #if TARGET_OS_IOS
+// If the connection on demand or connection on traffic flag is set, and user intervention
+// is not required, we have connectivity.
+#if TARGET_OS_IOS
       status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular
                                                            : kFIRReachabilityViaWifi;
-      #elif TARGET_OS_OSX
+#elif TARGET_OS_OSX
       status = kFIRReachabilityViaWifi;
-      #endif
+#endif
     }
   }
   return status;
@@ -222,7 +221,8 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
 @end
 
 static void ReachabilityCallback(SCNetworkReachabilityRef reachability,
-                                 SCNetworkReachabilityFlags flags, void *info) {
+                                 SCNetworkReachabilityFlags flags,
+                                 void *info) {
   FIRReachabilityChecker *checker = (__bridge FIRReachabilityChecker *)info;
   [checker reachabilityFlagsChanged:flags];
 }
diff --git a/Firebase/Core/FIRURLSchemeUtil.m b/Firebase/Core/FIRURLSchemeUtil.m
index 8dbecae..0e4fc9c 100644
--- a/Firebase/Core/FIRURLSchemeUtil.m
+++ b/Firebase/Core/FIRURLSchemeUtil.m
@@ -19,7 +19,7 @@
  * Regular expression to match the URL scheme for Google sign-in.
  */
 static NSString *const kFIRGoogleSignInURLSchemePattern =
-@"^com\\.googleusercontent\\.apps\\.\\d+-\\w+$";
+    @"^com\\.googleusercontent\\.apps\\.\\d+-\\w+$";
 
 BOOL fir_areURLSchemesValidForGoogleSignIn(NSArray *urlSchemes) {
   BOOL hasReversedClientID = NO;
@@ -37,7 +37,7 @@ BOOL fir_areURLSchemesValidForGoogleSignIn(NSArray *urlSchemes) {
   }
   if (!hasReversedClientID) {
     FIRLogInfo(kFIRLoggerCore, @"I-COR000021", @"A reversed client ID should be added as a URL "
-              @"scheme to enable Google sign-in.");
+                                               @"scheme to enable Google sign-in.");
   }
   return NO;
 }
diff --git a/Firebase/Core/Private/FIRAppAssociationRegistration.h b/Firebase/Core/Private/FIRAppAssociationRegistration.h
index 3d697a7..9778988 100644
--- a/Firebase/Core/Private/FIRAppAssociationRegistration.h
+++ b/Firebase/Core/Private/FIRAppAssociationRegistration.h
@@ -23,7 +23,7 @@ NS_ASSUME_NONNULL_BEGIN
         registered for any given host/key pair, and the object shall be created on-the-fly when
         asked for.
  */
-@interface FIRAppAssociationRegistration<ObjectType> : NSObject
+@interface FIRAppAssociationRegistration <ObjectType> : NSObject
 
 /** @fn registeredObjectWithHost:key:creationBlock:
     @brief Retrieves the registered object with a particular host and key.
diff --git a/Firebase/Core/Private/FIRNetworkLoggerProtocol.h b/Firebase/Core/Private/FIRNetworkLoggerProtocol.h
index 70cc56d..4a4315b 100644
--- a/Firebase/Core/Private/FIRNetworkLoggerProtocol.h
+++ b/Firebase/Core/Private/FIRNetworkLoggerProtocol.h
@@ -16,8 +16,8 @@
 
 @import Foundation;
 
-#import "FIRNetworkMessageCode.h"
 #import "FIRLoggerLevel.h"
+#import "FIRNetworkMessageCode.h"
 
 /// The log levels used by FIRNetworkLogger.
 typedef NS_ENUM(NSInteger, FIRNetworkLogLevel) {
@@ -27,7 +27,7 @@ typedef NS_ENUM(NSInteger, FIRNetworkLogLevel) {
   kFIRNetworkLogLevelDebug = FIRLoggerLevelDebug,
 };
 
-@protocol FIRNetworkLoggerDelegate<NSObject>
+@protocol FIRNetworkLoggerDelegate <NSObject>
 
 @required
 /// Tells the delegate to log a message with an array of contexts and the log level.
diff --git a/Firebase/Core/Private/FIRNetworkURLSession.h b/Firebase/Core/Private/FIRNetworkURLSession.h
index d146de2..3b60317 100644
--- a/Firebase/Core/Private/FIRNetworkURLSession.h
+++ b/Firebase/Core/Private/FIRNetworkURLSession.h
@@ -18,15 +18,18 @@
 
 #import "FIRNetworkLoggerProtocol.h"
 
-typedef void (^FIRNetworkCompletionHandler)(NSHTTPURLResponse *response, NSData *data,
+typedef void (^FIRNetworkCompletionHandler)(NSHTTPURLResponse *response,
+                                            NSData *data,
                                             NSError *error);
-typedef void (^FIRNetworkURLSessionCompletionHandler)(NSHTTPURLResponse *response, NSData *data,
-                                                      NSString *sessionID, NSError *error);
+typedef void (^FIRNetworkURLSessionCompletionHandler)(NSHTTPURLResponse *response,
+                                                      NSData *data,
+                                                      NSString *sessionID,
+                                                      NSError *error);
 typedef void (^FIRNetworkSystemCompletionHandler)(void);
 
 /// The protocol that uses NSURLSession for iOS >= 7.0 to handle requests and responses.
 @interface FIRNetworkURLSession
-    : NSObject<NSURLSessionDelegate, NSURLSessionTaskDelegate, NSURLSessionDownloadDelegate>
+    : NSObject <NSURLSessionDelegate, NSURLSessionTaskDelegate, NSURLSessionDownloadDelegate>
 
 /// Indicates whether the background network is enabled. Default value is NO.
 @property(nonatomic, getter=isBackgroundNetworkEnabled) BOOL backgroundNetworkEnabled;
diff --git a/Firebase/Core/Private/FIRReachabilityChecker.h b/Firebase/Core/Private/FIRReachabilityChecker.h
index 105cd3d..afbc89b 100644
--- a/Firebase/Core/Private/FIRReachabilityChecker.h
+++ b/Firebase/Core/Private/FIRReachabilityChecker.h
@@ -21,8 +21,8 @@
 typedef enum {
   kFIRReachabilityUnknown,  ///< Have not yet checked or been notified whether host is reachable.
   kFIRReachabilityNotReachable,  ///< Host is not reachable.
-  kFIRReachabilityViaWifi,  ///< Host is reachable via Wifi.
-  kFIRReachabilityViaCellular,  ///< Host is reachable via cellular.
+  kFIRReachabilityViaWifi,       ///< Host is reachable via Wifi.
+  kFIRReachabilityViaCellular,   ///< Host is reachable via cellular.
 } FIRReachabilityStatus;
 
 const NSString *FIRReachabilityStatusString(FIRReachabilityStatus status);
diff --git a/Firebase/Core/Public/FIRApp.h b/Firebase/Core/Public/FIRApp.h
index 8f52e1a..712781f 100644
--- a/Firebase/Core/Public/FIRApp.h
+++ b/Firebase/Core/Public/FIRApp.h
@@ -75,8 +75,8 @@ FIR_SWIFT_NAME(FirebaseApp)
                Letters, Numbers and Underscore.
  * @param options The Firebase application options used to configure the services.
  */
-+ (void)configureWithName:(NSString *)name options:(FIROptions *)options
-    FIR_SWIFT_NAME(configure(name:options:));
++ (void)configureWithName:(NSString *)name
+                  options:(FIROptions *)options FIR_SWIFT_NAME(configure(name:options:));
 
 /**
  * Returns the default app, or nil if the default app does not exist.
@@ -94,13 +94,13 @@ FIR_SWIFT_NAME(FirebaseApp)
  * Returns the set of all extant FIRApp instances, or nil if there are no FIRApp instances. This
  * method is thread safe.
  */
-@property(class, readonly, nullable) NSDictionary <NSString *, FIRApp *> *allApps;
+@property(class, readonly, nullable) NSDictionary<NSString *, FIRApp *> *allApps;
 #else
 /**
  * Returns the set of all extant FIRApp instances, or nil if there are no FIRApp instances. This
  * method is thread safe.
  */
-+ (nullable NSDictionary <NSString *, FIRApp *> *)allApps FIR_SWIFT_NAME(allApps());
++ (nullable NSDictionary<NSString *, FIRApp *> *)allApps FIR_SWIFT_NAME(allApps());
 #endif  // defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
 
 /**
diff --git a/Firebase/Core/Public/FIRConfiguration.h b/Firebase/Core/Public/FIRConfiguration.h
index 496b211..e2c85e5 100644
--- a/Firebase/Core/Public/FIRConfiguration.h
+++ b/Firebase/Core/Public/FIRConfiguration.h
@@ -48,7 +48,6 @@ NS_ASSUME_NONNULL_BEGIN
 FIR_SWIFT_NAME(FirebaseConfiguration)
 @interface FIRConfiguration : NSObject
 
-
 #if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
 /** Returns the shared configuration object. */
 @property(class, nonatomic, readonly) FIRConfiguration *sharedInstance FIR_SWIFT_NAME(shared);
diff --git a/Firebase/Core/Public/FIRCoreSwiftNameSupport.h b/Firebase/Core/Public/FIRCoreSwiftNameSupport.h
index 55e1bcc..216c047 100644
--- a/Firebase/Core/Public/FIRCoreSwiftNameSupport.h
+++ b/Firebase/Core/Public/FIRCoreSwiftNameSupport.h
@@ -24,6 +24,6 @@
 #define FIR_SWIFT_NAME(X) NS_SWIFT_NAME(X)
 #else
 #define FIR_SWIFT_NAME(X)  // Intentionally blank.
-#endif  // #ifdef __IPHONE_9_3
+#endif                     // #ifdef __IPHONE_9_3
 
 #endif  // FIR_SWIFT_NAME
diff --git a/Firebase/Core/Public/FIROptions.h b/Firebase/Core/Public/FIROptions.h
index 7bc2406..e7facd8 100644
--- a/Firebase/Core/Public/FIROptions.h
+++ b/Firebase/Core/Public/FIROptions.h
@@ -24,7 +24,7 @@ NS_ASSUME_NONNULL_BEGIN
  * This class provides constant fields of Google APIs.
  */
 FIR_SWIFT_NAME(FirebaseOptions)
-@interface FIROptions : NSObject<NSCopying>
+@interface FIROptions : NSObject <NSCopying>
 
 /**
  * Returns the default options.
@@ -105,9 +105,10 @@ FIR_SWIFT_NAME(FirebaseOptions)
                         databaseURL:(NSString *)databaseURL
                       storageBucket:(NSString *)storageBucket
                   deepLinkURLScheme:(NSString *)deepLinkURLScheme
-    DEPRECATED_MSG_ATTRIBUTE("Use `-[[FIROptions alloc] initWithGoogleAppID:GCMSenderID:]` "
-                             "(`FirebaseOptions(googleAppID:gcmSenderID:)` in Swift)` and property "
-                             "setters instead.");
+    DEPRECATED_MSG_ATTRIBUTE(
+        "Use `-[[FIROptions alloc] initWithGoogleAppID:GCMSenderID:]` "
+        "(`FirebaseOptions(googleAppID:gcmSenderID:)` in Swift)` and property "
+        "setters instead.");
 
 /**
  * Initializes a customized instance of FIROptions from the file at the given plist file path.
diff --git a/Firebase/Database/.clang-format b/Firebase/Database/.clang-format
new file mode 100644
index 0000000..39f9642
--- /dev/null
+++ b/Firebase/Database/.clang-format
@@ -0,0 +1 @@
+IndentWidth: 4