(Reflection) Calling A Method With Parameters By Function Name In Swift

Context

I have an instance of class called Solution and I have a function name as a string functionName that I want to call on the Solution instance solutionInstance. I have the parameters for the function in an array and I'd like to pass those as well.

I am using the Swift compiler to compile all of my .swift files together (swiftc with a files enumerated and then -o and the output file name) then I run the final output.

Python Example

Here is how I do this in Python:

method = getattr(solutionInstance, functionName) # get method off of instance for function
programOutput = method(*testInputsParsed) # pass the list of parameters & call the method

Purpose

This is server-side code that runs in a container to run a user's code. This code lives in a "Driver" main.swift file that calls the methods and orchestrates testing.

Problem

Swift is statically typed and I've been searching around and most sources say there is limited reflection support in Swift (and suggest to "reach into Objective-C" to get the functionality desired).

Swift is not my native language (TypeScript/JavaScript, Java, Python strongest, then C# and C++ mild, then just implementing Swift code for this feature now) so I'm not sure what that means and I haven't been able to find a definitive answer.

Question

How can I call a function by its name on a Solution class instance (it implements no protocols, at least by me) and pass an array of parameters in Swift (using reflection)? How does my setup need to change to make this happen (importing libraries, etc.)

Thank you!

Referenced Posts

• Calling Method using reflection
• Does Swift support reflection?
• Call a method from a String in Swift
• How to invoke a class method using performSelector() on AnyClass in Swift?
• Dynamically call a function in Swift