| /* |
| * 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 "NSObject+WXSwizzle.h" |
| #import <objc/runtime.h> |
| |
| @implementation NSObject (WXSwizzle) |
| |
| + (BOOL)weex_swizzle:(Class)originalClass Method:(SEL)originalSelector withMethod:(SEL)swizzledSelector |
| { |
| if (!(originalClass && originalSelector && swizzledSelector)) { |
| return NO; |
| } |
| |
| Class class = [self class]; |
| |
| Method originalMethod = class_getInstanceMethod(originalClass, originalSelector); |
| Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector); |
| |
| BOOL didAddMethod = class_addMethod(originalClass, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod)); |
| |
| if (didAddMethod) { |
| class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod)); |
| } else { |
| method_exchangeImplementations(originalMethod, swizzledMethod); |
| } |
| |
| return YES; |
| } |
| |
| @end |
