This is not a directly Kotlin related question, but it can be used with Kotlin too, how do you navigate to the implementation of an abstract function, in a specific implementation class? suppose you have an

Animal

class that has

abstract fun run()

and you have

class Dog : Anima() { //implements run }

and you have an instance of dog and usage of

run()

somewhere

kotlin
val dog = Dog()
dog.run()

how do you navigate to

run

implementation in Dog?

If you have the interface opened there's an icon on the left od the function that pops open a list of the implementations of that function.

right click on method > goto > implementation(s)

Cmd + Click

There are keyboard shortcuts too. Cmd-b/ctrl-b for goto implementation.

all of the suggestions show all of the implementations, and if you have a lot of implementations of the class, it might be handy to show the implementation for that specific class.

I suspect that w/o running the code, it would be tough for the IDE to determine what the actual type of

dog

is at that line. I know WE can see it in this example, but…

It's what type of animal, not type of Dog and I don't think it would be hard for the IDE to go to that file and it's implementation of

run()

unless it is an abstract class itself

Actually if you do

val dog = Dog()

it has type

Dog

so it should all just work, right?

Yes it should, but it doesnt. It goes to the abstract function in the base class which is Animal

Type of variable

dog

is what I was saying. And how many times have you had people say to you “it shouldn’t be that hard to…“. If you feel this way, raise a feature request on IntelliJ ticket system. They’ll let you know if it’s feasible or not…

I's say that would be a bug, but for me it works fine on this code:

abstract class Parent {
    abstract fun test()
}

class Child: Parent() {
    override fun test() { println("child") }
}

class Other: Parent() {
    override fun test() { println("other") }
}

fun main(args: Array<String>) {
    val child = Child()
    child.test()
}

Karel when you CMD+click on child.test() does it go to the Child class?

I do

Ctrl+B

.

Now it seems that it is a bug! Thanks a lot