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- /*
- * Copyright 2019 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 "FIRInstanceIDCombinedHandler.h"
-
- NS_ASSUME_NONNULL_BEGIN
-
- typedef void (^FIRInstanseIDHandler)(id _Nullable result, NSError *_Nullable error);
-
- @interface FIRInstanceIDCombinedHandler <ResultType>()
- @property(atomic, readonly, strong) NSMutableArray<FIRInstanseIDHandler> *handlers;
- @end
-
- NS_ASSUME_NONNULL_END
-
- @implementation FIRInstanceIDCombinedHandler
-
- - (instancetype)init {
- self = [super init];
- if (self) {
- _handlers = [NSMutableArray array];
- }
- return self;
- }
-
- - (void)addHandler:(FIRInstanseIDHandler)handler {
- if (!handler) {
- return;
- }
-
- @synchronized(self) {
- [self.handlers addObject:handler];
- }
- }
-
- - (FIRInstanseIDHandler)combinedHandler {
- FIRInstanseIDHandler combinedHandler = nil;
-
- @synchronized(self) {
- NSArray<FIRInstanseIDHandler> *handlers = [self.handlers copy];
- combinedHandler = ^(id result, NSError *error) {
- for (FIRInstanseIDHandler handler in handlers) {
- handler(result, error);
- }
- };
- }
-
- return combinedHandler;
- }
-
- @end
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