| 1 |
efrain |
1 |
/*
|
|
|
2 |
* Copyright 2018 Google LLC
|
|
|
3 |
*
|
|
|
4 |
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
5 |
* you may not use this file except in compliance with the License.
|
|
|
6 |
* You may obtain a copy of the License at
|
|
|
7 |
*
|
|
|
8 |
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
9 |
*
|
|
|
10 |
* Unless required by applicable law or agreed to in writing, software
|
|
|
11 |
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
12 |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
13 |
* See the License for the specific language governing permissions and
|
|
|
14 |
* limitations under the License.
|
|
|
15 |
*/
|
|
|
16 |
|
|
|
17 |
#import <Foundation/Foundation.h>
|
|
|
18 |
|
|
|
19 |
NS_ASSUME_NONNULL_BEGIN
|
|
|
20 |
|
|
|
21 |
/** This class handles the runtime manipulation necessary to instrument selectors. It stores the
|
|
|
22 |
* classes and selectors that have been swizzled, and runs all operations on its own queue.
|
|
|
23 |
*/
|
|
|
24 |
@interface GULSwizzler : NSObject
|
|
|
25 |
|
|
|
26 |
/** Manipulates the Objective-C runtime to replace the original IMP with the supplied block.
|
|
|
27 |
*
|
|
|
28 |
* @param aClass The class to swizzle.
|
|
|
29 |
* @param selector The selector of the class to swizzle.
|
|
|
30 |
* @param isClassSelector A BOOL specifying whether the selector is a class or instance selector.
|
|
|
31 |
* @param block The block that replaces the original IMP.
|
|
|
32 |
*/
|
|
|
33 |
+ (void)swizzleClass:(Class)aClass
|
|
|
34 |
selector:(SEL)selector
|
|
|
35 |
isClassSelector:(BOOL)isClassSelector
|
|
|
36 |
withBlock:(nullable id)block;
|
|
|
37 |
|
|
|
38 |
/** Returns the current IMP for the given class and selector.
|
|
|
39 |
*
|
|
|
40 |
* @param aClass The class to use.
|
|
|
41 |
* @param selector The selector to find the implementation of.
|
|
|
42 |
* @param isClassSelector A BOOL specifying whether the selector is a class or instance selector.
|
|
|
43 |
* @return The implementation of the selector in the runtime.
|
|
|
44 |
*/
|
|
|
45 |
+ (nullable IMP)currentImplementationForClass:(Class)aClass
|
|
|
46 |
selector:(SEL)selector
|
|
|
47 |
isClassSelector:(BOOL)isClassSelector;
|
|
|
48 |
|
|
|
49 |
/** Checks the runtime to see if a selector exists on a class. If a property is declared as
|
|
|
50 |
* @dynamic, we have a reverse swizzling situation, where the implementation of a method exists
|
|
|
51 |
* only in concrete subclasses, and NOT in the superclass. We can detect that situation using
|
|
|
52 |
* this helper method. Similarly, we can detect situations where a class doesn't implement a
|
|
|
53 |
* protocol method.
|
|
|
54 |
*
|
|
|
55 |
* @param selector The selector to check for.
|
|
|
56 |
* @param aClass The class to check.
|
|
|
57 |
* @param isClassSelector A BOOL specifying whether the selector is a class or instance selector.
|
|
|
58 |
* @return YES if the method was found in this selector/class combination, NO otherwise.
|
|
|
59 |
*/
|
|
|
60 |
+ (BOOL)selector:(SEL)selector existsInClass:(Class)aClass isClassSelector:(BOOL)isClassSelector;
|
|
|
61 |
|
|
|
62 |
/** Returns a list of all Objective-C (and not primitive) ivars contained by the given object.
|
|
|
63 |
*
|
|
|
64 |
* @param object The object whose ivars will be iterated.
|
|
|
65 |
* @return The list of ivar objects.
|
|
|
66 |
*/
|
|
|
67 |
+ (NSArray<id> *)ivarObjectsForObject:(id)object;
|
|
|
68 |
|
|
|
69 |
@end
|
|
|
70 |
|
|
|
71 |
NS_ASSUME_NONNULL_END
|