1 files changed, 36 insertions, 0 deletions
diff --git a/Firebase/Auth/Source/AuthProviders/Phone/NSString+FIRAuth.m b/Firebase/Auth/Source/AuthProviders/Phone/NSString+FIRAuth.m
new file mode 100644
index 0000000..87f3b1c
--- /dev/null
+++ b/Firebase/Auth/Source/AuthProviders/Phone/NSString+FIRAuth.m
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+#import "NSString+FIRAuth.h"
+
+#import <objc/runtime.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation NSString (FIRAuth)
+
+- (void)setFir_authPhoneNumber:(NSString *)phoneNumber {
+  objc_setAssociatedObject(self, @selector(fir_authPhoneNumber), phoneNumber,
+                           OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (NSString *)fir_authPhoneNumber {
+  return objc_getAssociatedObject(self, @selector(fir_authPhoneNumber));
+}
+
+@end
+
+NS_ASSUME_NONNULL_END