1 files changed, 53 insertions, 0 deletions
diff --git a/Firestore/Source/Remote/FSTExistenceFilter.mm b/Firestore/Source/Remote/FSTExistenceFilter.mm
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+++ b/Firestore/Source/Remote/FSTExistenceFilter.mm
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+/*
+ * 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/Remote/FSTExistenceFilter.h"
+
+@interface FSTExistenceFilter ()
+
+- (instancetype)initWithCount:(int32_t)count NS_DESIGNATED_INITIALIZER;
+
+@end
+
+@implementation FSTExistenceFilter
+
++ (instancetype)filterWithCount:(int32_t)count {
+  return [[FSTExistenceFilter alloc] initWithCount:count];
+}
+
+- (instancetype)initWithCount:(int32_t)count {
+  if (self = [super init]) {
+    _count = count;
+  }
+  return self;
+}
+
+- (BOOL)isEqual:(id)other {
+  if (other == self) {
+    return YES;
+  }
+  if (![other isMemberOfClass:[FSTExistenceFilter class]]) {
+    return NO;
+  }
+
+  return _count == ((FSTExistenceFilter *)other).count;
+}
+
+- (NSUInteger)hash {
+  return _count;
+}
+
+@end