NSMapTable、NSHashTable与NSPointerArray的封装
说明
NSMapTable对应NSDictionary；NSHashTable对应NSSet；NSPointerArray对应NSArray，本人通过装饰设计模式对他们的使用进行了封装。
源码
https://github.com/YouXianMing/WeakList
//
// WeakDictionary.h
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface WeakDictionary : NSObject
/**
* 元素个数
*/
@property (readonly) NSUInteger count;
/**
* 获取对象
*
* @param aKey
*
* @return 对象
*/
- (id)objectForKey:(id)aKey;
/**
* 根据键值移除对象
*
* @param aKey 键值
*/
- (void)removeObjectForKey:(id)aKey;
/**
* 添加对象
*
* @param anObject 对象
* @param aKey 键值
*/
- (void)setObject:(id)anObject forKey:(id)aKey;
/**
* 键值枚举器
*
* @return 枚举器
*/
- (NSEnumerator *)keyEnumerator;
/**
* 对象枚举器
*
* @return 对象枚举器
*/
- (NSEnumerator *)objectEnumerator;
/**
* 移除所有对象
*/
- (void)removeAllObjects;
/**
* 返回字典
*
* @return 字典
*/
- (NSDictionary *)dictionaryRepresentation;
@end//
// WeakDictionary.m
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "WeakDictionary.h"
@interface WeakDictionary () {
NSMapTable *_mapTable;
}
@end
@implementation WeakDictionary
- (instancetype)init {
self = [super init];
if (self) {
_mapTable = [NSMapTable strongToWeakObjectsMapTable];
}
return self;
}
- (id)objectForKey:(id)aKey {
return [_mapTable objectForKey:aKey];
}
- (void)removeObjectForKey:(id)aKey {
[_mapTable removeObjectForKey:aKey];
}
- (void)setObject:(id)anObject forKey:(id)aKey {
[_mapTable setObject:anObject forKey:aKey];
}
- (NSEnumerator *)keyEnumerator {
return [_mapTable keyEnumerator];
}
- (NSEnumerator *)objectEnumerator {
return [_mapTable objectEnumerator];
}
- (void)removeAllObjects {
[_mapTable removeAllObjects];
}
- (NSDictionary *)dictionaryRepresentation {
return [_mapTable dictionaryRepresentation];
}
@synthesize count = _count;
- (NSUInteger)count {
return _mapTable.count;
}
- (NSString *)description {
return [NSString stringWithFormat:@"%@", _mapTable.dictionaryRepresentation];
}
@end//
// WeakSet.h
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface WeakSet : NSObject
/**
* 元素个数
*/
@property (readonly) NSUInteger count;
/**
* 所有对象
*/
@property (readonly, copy) NSArray *allObjects;
/**
* 获取一个对象
*/
@property (readonly, nonatomic) id anyObject;
/**
* 获取集合
*/
@property (readonly, copy) NSSet *setRepresentation;
- (id)member:(id)object;
- (NSEnumerator *)objectEnumerator;
- (void)addObject:(id)object;
- (void)removeObject:(id)object;
- (void)removeAllObjects;
- (BOOL)containsObject:(id)anObject;
@end//
// WeakSet.m
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "WeakSet.h"
@interface WeakSet () {
NSHashTable *_hashTable;
}
@end
@implementation WeakSet
- (instancetype)init {
self = [super init];
if (self) {
_hashTable = [NSHashTable weakObjectsHashTable];
}
return self;
}
- (id)member:(id)object {
return [_hashTable member:object];
}
- (NSEnumerator *)objectEnumerator {
return [_hashTable objectEnumerator];
}
- (void)addObject:(id)object {
[_hashTable addObject:object];
}
- (void)removeObject:(id)object {
[_hashTable removeObject:object];
}
- (void)removeAllObjects {
[_hashTable removeAllObjects];
}
- (BOOL)containsObject:(id)anObject {
return [_hashTable containsObject:anObject];
}
@synthesize count = _count;
- (NSUInteger)count {
return _hashTable.count;
}
@synthesize allObjects = _allObjects;
- (NSArray *)allObjects {
return [_hashTable allObjects];
}
@synthesize anyObject = _anyObject;
- (id)anyObject {
return [_hashTable anyObject];
}
@synthesize setRepresentation = _setRepresentation;
- (NSSet *)setRepresentation {
return [_hashTable setRepresentation];
}
- (NSString *)description {
return [NSString stringWithFormat:@"%@", _hashTable.allObjects];
}
@end//
// WeakArray.h
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface WeakArray : NSObject
@property (readonly, copy) NSArray *allObjects;
@property (readonly) NSUInteger count;
- (id)objectAtIndex:(NSUInteger)index;
- (void)addObject:(id)object;
- (void)removeObjectAtIndex:(NSUInteger)index;
- (void)insertObject:(id)object atIndex:(NSUInteger)index;
- (void)replaceObjectAtIndex:(NSUInteger)index withPointer:(id)object;
- (void)compact;
@end//
// WeakArray.m
// IteratorPattern
//
// Created by YouXianMing on 15/9/12.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "WeakArray.h"
@interface WeakArray () {
NSPointerArray *_pointerArray;
}
@end
@implementation WeakArray
- (instancetype)init {
self = [super init];
if (self) {
_pointerArray = [NSPointerArray pointerArrayWithOptions:NSPointerFunctionsWeakMemory];
}
return self;
}
- (id)objectAtIndex:(NSUInteger)index {
return [_pointerArray pointerAtIndex:index];
}
- (void)addObject:(id)object {
[_pointerArray addPointer:(__bridge void *)(object)];
}
- (void)removeObjectAtIndex:(NSUInteger)index {
[_pointerArray removePointerAtIndex:index];
}
- (void)insertObject:(id)object atIndex:(NSUInteger)index {
[_pointerArray insertPointer:(__bridge void *)(object) atIndex:index];
}
- (void)replaceObjectAtIndex:(NSUInteger)index withPointer:(id)object {
[_pointerArray replacePointerAtIndex:index withPointer:(__bridge void *)(object)];
}
- (void)compact {
[_pointerArray compact];
}
@synthesize count = _count;
- (NSUInteger)count {
return _pointerArray.count;
}
- (NSString *)description {
return [NSString stringWithFormat:@"%@", _pointerArray.allObjects];
}
@synthesize allObjects = _allObjects;
- (NSArray *)allObjects {
return _pointerArray.allObjects;
}
@end使用
