98 lines
2.3 KiB
Objective-C
98 lines
2.3 KiB
Objective-C
// Copyright 2017 Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "Private/GULMutableDictionary.h"
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@implementation GULMutableDictionary {
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/// The mutable dictionary.
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NSMutableDictionary *_objects;
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/// Serial synchronization queue. All reads should use dispatch_sync, while writes use
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/// dispatch_async.
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dispatch_queue_t _queue;
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}
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- (instancetype)init {
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self = [super init];
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if (self) {
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_objects = [[NSMutableDictionary alloc] init];
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_queue = dispatch_queue_create("GULMutableDictionary", DISPATCH_QUEUE_SERIAL);
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}
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return self;
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}
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- (NSString *)description {
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__block NSString *description;
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dispatch_sync(_queue, ^{
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description = self->_objects.description;
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});
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return description;
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}
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- (id)objectForKey:(id)key {
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__block id object;
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dispatch_sync(_queue, ^{
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object = self->_objects[key];
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});
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return object;
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}
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- (void)setObject:(id)object forKey:(id<NSCopying>)key {
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dispatch_async(_queue, ^{
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self->_objects[key] = object;
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});
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}
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- (void)removeObjectForKey:(id)key {
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dispatch_async(_queue, ^{
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[self->_objects removeObjectForKey:key];
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});
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}
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- (void)removeAllObjects {
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dispatch_async(_queue, ^{
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[self->_objects removeAllObjects];
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});
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}
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- (NSUInteger)count {
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__block NSUInteger count;
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dispatch_sync(_queue, ^{
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count = self->_objects.count;
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});
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return count;
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}
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- (id)objectForKeyedSubscript:(id<NSCopying>)key {
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// The method this calls is already synchronized.
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return [self objectForKey:key];
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}
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- (void)setObject:(id)obj forKeyedSubscript:(id<NSCopying>)key {
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// The method this calls is already synchronized.
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[self setObject:obj forKey:key];
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}
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- (NSDictionary *)dictionary {
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__block NSDictionary *dictionary;
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dispatch_sync(_queue, ^{
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dictionary = [self->_objects copy];
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});
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return dictionary;
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}
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@end
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