[SR-953] Please implement NSBundle.init(forClass:)

[swift-ci]

Previous ID	SR-953
Radar	None
Original Reporter	vadim (JIRA User)
Type	Task

Additional Detail from JIRA

Votes	2
Component/s	Foundation
Labels	Task
Assignee	mamabusi (JIRA)
Priority	Medium

md5: 5b239564779b3473db72152901b916df

Issue Description:

https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/NSBundle.swift:
public init(forClass aClass: AnyClass) { NSUnimplemented() }

[swift-ci]

Comment by Yan Li (JIRA)

I looked into this one today.

First I thought it can be easily implemented by enumerating all loaded bundles and try to find where the class lives. It can be something like this:

let allBundles = NSBundle.allFrameworks() + NSBundle.allBundles()
        
let bundlesContainingClass = allBundles.filter {
    return $0.loaded
}.filter {
    return $0.classNamed(aClass.description()) != nil
}
                
return bundlesContainingClass.first!

But then I found out that many methods this implementation depends on are actually based on Objective-C runtime, for example: NSBundle.load(), NSBundle.classNamed(: ), etc. And in corelibs they are also NSUnumplemented().

So I think this task is actually depending on some other deeper tasks.