1 files changed, 0 insertions, 105 deletions
diff --git a/Firestore/Source/Core/FSTTargetIDGenerator.m b/Firestore/Source/Core/FSTTargetIDGenerator.m
deleted file mode 100644
index 58092ec..0000000
--- a/Firestore/Source/Core/FSTTargetIDGenerator.m
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * 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/Core/FSTTargetIDGenerator.h"
-
-#import <libkern/OSAtomic.h>
-
-NS_ASSUME_NONNULL_BEGIN
-
-#pragma mark - FSTTargetIDGenerator
-
-static const int kReservedBits = 1;
-
-/** FSTTargetIDGeneratorID is the set of all valid generators. */
-typedef NS_ENUM(NSInteger, FSTTargetIDGeneratorID) {
-  FSTTargetIDGeneratorIDLocalStore = 0,
-  FSTTargetIDGeneratorIDSyncEngine = 1
-};
-
-@interface FSTTargetIDGenerator () {
-  // This is volatile so it can be used with OSAtomicAdd32.
-  volatile FSTTargetID _previousID;
-}
-
-/**
- * Initializes the generator.
- *
- * @param generatorID A unique ID indicating which generator this is.
- * @param after Every call to nextID will return a number > @a after.
- */
-- (instancetype)initWithGeneratorID:(FSTTargetIDGeneratorID)generatorID
-                    startingAfterID:(FSTTargetID)after NS_DESIGNATED_INITIALIZER;
-
-// This is typed as FSTTargetID because we need to do bitwise operations with them together.
-@property(nonatomic, assign) FSTTargetID generatorID;
-@end
-
-@implementation FSTTargetIDGenerator
-
-#pragma mark - Constructors
-
-- (instancetype)initWithGeneratorID:(FSTTargetIDGeneratorID)generatorID
-                    startingAfterID:(FSTTargetID)after {
-  self = [super init];
-  if (self) {
-    _generatorID = generatorID;
-
-    // Replace the generator part of |after| with this generator's ID.
-    FSTTargetID afterWithoutGenerator = (after >> kReservedBits) << kReservedBits;
-    FSTTargetID afterGenerator = after - afterWithoutGenerator;
-    if (afterGenerator >= _generatorID) {
-      // For example, if:
-      //   self.generatorID = 0b0000
-      //   after = 0b1011
-      //   afterGenerator = 0b0001
-      // Then:
-      //   previous = 0b1010
-      //   next = 0b1100
-      _previousID = afterWithoutGenerator | self.generatorID;
-    } else {
-      // For example, if:
-      //   self.generatorID = 0b0001
-      //   after = 0b1010
-      //   afterGenerator = 0b0000
-      // Then:
-      //   previous = 0b1001
-      //   next = 0b1011
-      _previousID = (afterWithoutGenerator | self.generatorID) - (1 << kReservedBits);
-    }
-  }
-  return self;
-}
-
-+ (instancetype)generatorForLocalStoreStartingAfterID:(FSTTargetID)after {
-  return [[FSTTargetIDGenerator alloc] initWithGeneratorID:FSTTargetIDGeneratorIDLocalStore
-                                           startingAfterID:after];
-}
-
-+ (instancetype)generatorForSyncEngineStartingAfterID:(FSTTargetID)after {
-  return [[FSTTargetIDGenerator alloc] initWithGeneratorID:FSTTargetIDGeneratorIDSyncEngine
-                                           startingAfterID:after];
-}
-
-#pragma mark - Public methods
-
-- (FSTTargetID)nextID {
-  return OSAtomicAdd32(1 << kReservedBits, &_previousID);
-}
-
-@end
-
-NS_ASSUME_NONNULL_END