1 files changed, 96 insertions, 0 deletions
diff --git a/Firestore/Source/API/FIRFieldValue.mm b/Firestore/Source/API/FIRFieldValue.mm
new file mode 100644
index 0000000..7ae4fb0
--- /dev/null
+++ b/Firestore/Source/API/FIRFieldValue.mm
@@ -0,0 +1,96 @@
+/*
+ * 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 "Firestore/Source/API/FIRFieldValue+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFieldValue ()
+- (instancetype)initPrivate NS_DESIGNATED_INITIALIZER;
+@end
+
+#pragma mark - FSTDeleteFieldValue
+
+@interface FSTDeleteFieldValue ()
+/** Returns a single shared instance of the class. */
++ (instancetype)deleteFieldValue;
+@end
+
+@implementation FSTDeleteFieldValue
+
+- (instancetype)initPrivate {
+  self = [super initPrivate];
+  return self;
+}
+
++ (instancetype)deleteFieldValue {
+  static FSTDeleteFieldValue *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FSTDeleteFieldValue alloc] initPrivate];
+  });
+  return sharedInstance;
+}
+
+@end
+
+#pragma mark - FSTServerTimestampFieldValue
+
+@interface FSTServerTimestampFieldValue ()
+/** Returns a single shared instance of the class. */
++ (instancetype)serverTimestampFieldValue;
+@end
+
+@implementation FSTServerTimestampFieldValue
+
+- (instancetype)initPrivate {
+  self = [super initPrivate];
+  return self;
+}
+
++ (instancetype)serverTimestampFieldValue {
+  static FSTServerTimestampFieldValue *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FSTServerTimestampFieldValue alloc] initPrivate];
+  });
+  return sharedInstance;
+}
+
+@end
+
+#pragma mark - FIRFieldValue
+
+@implementation FIRFieldValue
+
+- (instancetype)initPrivate {
+  self = [super init];
+  return self;
+}
+
++ (instancetype)fieldValueForDelete {
+  return [FSTDeleteFieldValue deleteFieldValue];
+}
+
++ (instancetype)fieldValueForServerTimestamp {
+  return [FSTServerTimestampFieldValue serverTimestampFieldValue];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END