Refactor code structure for improved readability and maintainability

reference/code-index-mcp-master/test/sample-projects/objective-c/Person.h

@@ -0,0 +1,14 @@
+#import <Foundation/Foundation.h>
+
+@interface Person : NSObject
+
+@property (nonatomic, strong) NSString *name;
+@property (nonatomic, assign) NSInteger age;
+@property (nonatomic, strong) NSString *email;
+
+- (instancetype)initWithName:(NSString *)name age:(NSInteger)age;
+- (void)sayHello;
+- (void)updateEmail:(NSString *)email;
++ (Person *)createDefaultPerson;
+
+@end

reference/code-index-mcp-master/test/sample-projects/objective-c/Person.m

@@ -0,0 +1,27 @@
+#import "Person.h"
+
+@implementation Person
+
+- (instancetype)initWithName:(NSString *)name age:(NSInteger)age {
+    self = [super init];
+    if (self) {
+        _name = name;
+        _age = age;
+    }
+    return self;
+}
+
+- (void)sayHello {
+    NSLog(@"Hello, my name is %@", self.name);
+}
+
+- (void)updateEmail:(NSString *)email {
+    self.email = email;
+    NSLog(@"Email updated to: %@", email);
+}
+
++ (Person *)createDefaultPerson {
+    return [[Person alloc] initWithName:@"John Doe" age:30];
+}
+
+@end

reference/code-index-mcp-master/test/sample-projects/objective-c/UserManager.h

@@ -0,0 +1,14 @@
+#import <Foundation/Foundation.h>
+#import "Person.h"
+
+@interface UserManager : NSObject
+
+@property (nonatomic, strong) NSMutableArray<Person *> *users;
+
++ (UserManager *)sharedManager;
+- (void)addUser:(Person *)user;
+- (Person *)findUserByName:(NSString *)name;
+- (void)removeUser:(Person *)user;
+- (NSInteger)userCount;
+
+@end

reference/code-index-mcp-master/test/sample-projects/objective-c/UserManager.m

@@ -0,0 +1,42 @@
+#import "UserManager.h"
+
+@implementation UserManager
+
++ (UserManager *)sharedManager {
+    static UserManager *sharedInstance = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedInstance = [[UserManager alloc] init];
+        sharedInstance.users = [[NSMutableArray alloc] init];
+    });
+    return sharedInstance;
+}
+
+- (void)addUser:(Person *)user {
+    if (user) {
+        [self.users addObject:user];
+        NSLog(@"Added user: %@", user.name);
+    }
+}
+
+- (Person *)findUserByName:(NSString *)name {
+    for (Person *user in self.users) {
+        if ([user.name isEqualToString:name]) {
+            return user;
+        }
+    }
+    return nil;
+}
+
+- (void)removeUser:(Person *)user {
+    if (user) {
+        [self.users removeObject:user];
+        NSLog(@"Removed user: %@", user.name);
+    }
+}
+
+- (NSInteger)userCount {
+    return self.users.count;
+}
+
+@end

reference/code-index-mcp-master/test/sample-projects/objective-c/main.m

@@ -0,0 +1,30 @@
+#import <Foundation/Foundation.h>
+#import "Person.h"
+#import "UserManager.h"
+
+int main(int argc, const char * argv[]) {
+    @autoreleasepool {
+        // Create some users
+        Person *alice = [[Person alloc] initWithName:@"Alice" age:25];
+        Person *bob = [[Person alloc] initWithName:@"Bob" age:30];
+        Person *charlie = [Person createDefaultPerson];
+        
+        // Get shared manager
+        UserManager *manager = [UserManager sharedManager];
+        
+        // Add users
+        [manager addUser:alice];
+        [manager addUser:bob];
+        [manager addUser:charlie];
+        
+        // Find user
+        Person *found = [manager findUserByName:@"Alice"];
+        if (found) {
+            [found sayHello];
+            [found updateEmail:@"alice@example.com"];
+        }
+        
+        NSLog(@"Total users: %ld", (long)[manager userCount]);
+    }
+    return 0;
+}