Hi all! I am writing a Kotlin plugin code, and at ...

# compiler

[jdemeulenaere]

Hi all! I am writing a Kotlin plugin code, and at some point I would like to get all candidates descriptors of a (incomplete) function call. The code below works for calls that have only one possible candidate, but not for calls with multiple candidates/overloads :

val context: BindingContext = ...
val callExpression: KtCallExpression = ...
val call = callExpression.getCall(context)
val resolvedDescriptor = call?.getResolvedCall(context)?.candidateDescriptor

if (resolvedDescriptor == null) {
  // TODO: Find a list of candidate descriptors.
}

For example, the following code:

fun hello(s: String) { ... }
fun helloWithOverload(s: String) { ... }
fun helloWithOverload(i: Int) { ... }

fun main() {
  hello("foo") // will be correctly resolved
  hello() // will be correctly resolved as there is only one possible call
  helloWithOverload("foo") // will be correctly resolved as the call is complete
  helloWithOverload() // won't be resolved as the call is incomplete and there are multiple candidates
}

My question: what methods can I use to find those candidates ?
Thanks a lot 🙂

[raulraja]

You can look at this file and maybe trace back depending at which point you are resolving

[raulraja]

https://github.com/JetBrains/kotlin/blob/9ba7907b815780531d27fe9be0cfe3308f50111f/compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/results/ResolutionResultsHandler.java