1 files changed, 47 insertions, 0 deletions
diff --git a/Firestore/Source/Auth/FSTEmptyCredentialsProvider.m b/Firestore/Source/Auth/FSTEmptyCredentialsProvider.m
new file mode 100644
index 0000000..266e09b
--- /dev/null
+++ b/Firestore/Source/Auth/FSTEmptyCredentialsProvider.m
@@ -0,0 +1,47 @@
+/*
+ * 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 "FSTEmptyCredentialsProvider.h"
+
+#import "FSTUser.h"
+#import "FSTAssert.h"
+#import "FSTDispatchQueue.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FSTEmptyCredentialsProvider
+
+- (void)getTokenForcingRefresh:(BOOL)forceRefresh
+                    completion:(FSTVoidGetTokenResultBlock)completion {
+  completion(nil, nil);
+}
+
+- (void)setUserChangeListener:(nullable FSTVoidUserBlock)block {
+  // Since the user never changes, we just need to fire the initial event and don't need to hang
+  // onto the block.
+  if (block) {
+    block([FSTUser unauthenticatedUser]);
+  }
+}
+
+- (nullable FSTVoidUserBlock)userChangeListener {
+  // TODO(mikelehen): Implementation omitted for convenience since it's not actually required.
+  FSTFail(@"Not implemented.");
+}
+
+@end
+
+NS_ASSUME_NONNULL_END