List of classes in project Objective-c

Question

I am playing around with some reflection in Objective C (iOS app) and building a customized testing environment, and I am trying to get a list of classes that I have created in my project, so I can iterate over these and look for certain method declarations by using reflection.

My problem is to retrieve that list. I do not want to manually type in each class into a list or some static field in my reflection class, but instead let it be generic for any project.

The list could be a list of class names, or objects of the type Class.

I did manage to find the objc_getClassList() function in the documentation: https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ObjCRuntimeRef/Reference/reference.html
But this creates a list of ALL classes, and I wouldn't be able to determine which are user defined and which are not. I have tried to seek guidance around the Internet, but without luck finding an answer or similar question.

Any help is appreciated!

EDIT:
Now I also tried to use objc_copyImageNames() in hope that I would be able to find my project as an image, and then use objc_copyClassNamesForImage() to get the list, but with no luck as the project is not considered an image, Worth a shoot I guess.

Answer 1

You could use the code from the objc_getClassList() documentation and check each class with [NSBundle bundleForClass:class] if it is defined in your application:

int numClasses;
Class * classes = NULL;

classes = NULL;
numClasses = objc_getClassList(NULL, 0);

if (numClasses > 0 )
{
    classes = (__unsafe_unretained Class *)malloc(sizeof(Class) * numClasses);
    numClasses = objc_getClassList(classes, numClasses);
    for (int i = 0; i < numClasses; i++) {
        Class c = classes[i];
        NSBundle *b = [NSBundle bundleForClass:c];
        if (b == [NSBundle mainBundle]) {
            NSLog(@"%s", class_getName(c));
            // ...
        }
    }
    free(classes);
}