mirror of
https://github.com/DKJone/DKWechatHelper.git
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53 lines
1.6 KiB
Objective-C
53 lines
1.6 KiB
Objective-C
// QGVAPWeakProxy.m
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// Tencent is pleased to support the open source community by making vap available.
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//
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// Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions and
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// limitations under the License.
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#import "QGVAPWeakProxy.h"
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@implementation QGVAPWeakProxy {
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__weak id _target;
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}
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- (instancetype)initWithTarget:(id)target {
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if (self = [super init]) {
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_target = target;
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}
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return self;
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}
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+ (instancetype)proxyWithTarget:(id)target {
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return [[QGVAPWeakProxy alloc] initWithTarget:target];
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}
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// 1. 快速消息转发
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- (id)forwardingTargetForSelector:(SEL)aSelector {
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return _target;
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}
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// 2. 如果<1>返回nil，到标准消息转发处理，如果不处理为Crash：unrecognized selector. 这里我们直接返回空指针地址.
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- (NSMethodSignature *)methodSignatureForSelector:(SEL)aSelector {
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return [NSObject instanceMethodSignatureForSelector:@selector(init)];
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}
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- (void)forwardInvocation:(NSInvocation *)anInvocation {
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void *null = NULL;
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[anInvocation setReturnValue:&null];
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}
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- (BOOL)respondsToSelector:(SEL)aSelector {
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return [_target respondsToSelector:aSelector];
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}
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@end
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