| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 "NSArray+Weex.h" |
| |
| @implementation NSArray (Weex) |
| |
| - (id)wx_safeObjectAtIndex:(NSUInteger)index |
| { |
| if (index >= self.count) { |
| return nil; |
| } |
| |
| return [self objectAtIndex:index]; |
| } |
| |
| @end |
| |
| @implementation NSMutableArray (Weex) |
| |
| // It's quite ingenius, using a Category to allow the creation of a mutable array that does no retain/release by backing it with a CFArray with proper callbacks.http://stackoverflow.com/questions/4692161/non-retaining-array-for-delegates |
| + (id)wx_mutableArrayUsingWeakReferences { |
| return [self wx_mutableArrayUsingWeakReferencesWithCapacity:0]; |
| } |
| |
| + (id)wx_mutableArrayUsingWeakReferencesWithCapacity:(NSUInteger)capacity { |
| CFArrayCallBacks callbacks = {0, NULL, NULL, CFCopyDescription, CFEqual}; |
| // We create a weak reference array |
| return (__bridge id)(CFArrayCreateMutable(0, capacity, &callbacks)); |
| } |
| |
| + (void)wx_releaseArray:(id)array { |
| |
| CFBridgingRelease((__bridge CFArrayRef _Nullable)(array)); |
| } |
| |
| @end |
