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Pods/LookinServer/Src/Main/Server/Others/LKS_GestureTargetActionsSearcher.m

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+#ifdef SHOULD_COMPILE_LOOKIN_SERVER
+
+//
+//  LKS_GestureTargetActionsSearcher.m
+//  LookinServer
+//
+//  Created by likai.123 on 2023/9/11.
+//
+
+#import "LKS_GestureTargetActionsSearcher.h"
+#import <objc/runtime.h>
+#import "NSArray+Lookin.h"
+#import "LookinTuple.h"
+#import "LookinWeakContainer.h"
+
+@implementation LKS_GestureTargetActionsSearcher
+
++ (NSArray<LookinTwoTuple *> *)getTargetActionsFromRecognizer:(UIGestureRecognizer *)recognizer {
+    if (!recognizer) {
+        return @[];
+    }
+    // KVC 要放到 try catch 里面防止 Crash
+    @try {
+        NSArray* targetsList = [recognizer valueForKey:@"_targets"];
+        if (!targetsList || targetsList.count == 0) {
+            return @[];
+        }
+        // 数组元素对象是 UIGestureRecognizerTarget*
+        // 这个元素有两个属性，一个是名为 _target 的属性指向某个实例，另一个是名为 _action 的属性保存一个 SEL
+        NSArray<LookinTwoTuple *>* ret = [targetsList lookin_map:^id(NSUInteger idx, id targetBox) {
+            id targetObj = [targetBox valueForKey:@"_target"];
+            if (!targetObj) {
+                return nil;
+            }
+            SEL action = ((SEL (*)(id, Ivar))object_getIvar)(targetBox, class_getInstanceVariable([targetBox class], "_action"));
+            
+            LookinTwoTuple* tuple = [LookinTwoTuple new];
+            tuple.first = [LookinWeakContainer containerWithObject:targetObj];
+            tuple.second = (action == NULL ? @"NULL" : NSStringFromSelector(action));
+            return tuple;
+        }];
+        return ret;
+    }
+    @catch (NSException * e) {
+        NSLog(@"LookinServer - %@", e);
+        return @[];
+    }
+}
+
+@end
+
+#endif /* SHOULD_COMPILE_LOOKIN_SERVER */