Is this a known bug kotlinlang #announcements

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Title

c

Chris

07/12/2019, 1:58 PM

Is this a known bug?

k

karelpeeters

07/12/2019, 2:00 PM

I don't mean no be snarky but are you sure that they're the same string? Does

Ctrl+Shift+B

(go to type definition) get you the same one on both?

c

Chris

07/12/2019, 2:02 PM

@karelpeeters both jump me to the same location, class kotlin.String in kotlin.kotlin_builtins

s

streetsofboston

07/12/2019, 2:03 PM

What are the definitions of the two

fileExtension

functions?

c

Chris

07/12/2019, 2:03 PM

it seems to be happening for delegated properties

k

karelpeeters

07/12/2019, 2:03 PM

And is it possible to create a mininal example?

c

Chris

07/12/2019, 2:04 PM

val ScriptCompilationConfigurationKeys.fileExtension by PropertiesCollection.key<String>("kts")
val ScriptEvaluationConfigurationKeys.hostConfiguration by PropertiesCollection.key<ScriptingHostConfiguration>()
val ScriptCompilationConfigurationKeys.displayName by PropertiesCollection.key<String>("Kotlin script")

s

streetsofboston

07/12/2019, 2:05 PM

What is the type of

fileExtension

?

c

Chris

07/12/2019, 2:07 PM

(for reference, I've checked out the 1.3.41 release of Kotlin)

that's where I'm seeing these errors

s

streetsofboston

07/12/2019, 2:08 PM

How is

PropertiesCollection.Key<T>

defined?

c

Chris

07/12/2019, 2:08 PM

class PropertyKeyDelegate<T>(private val getDefaultValue: PropertiesCollection.() -> T?) {
        constructor(defaultValue: T?) : this({ defaultValue })

        operator fun getValue(thisRef: Any?, property: KProperty<*>): Key<T> =
            Key(property.name, getDefaultValue)
    }

s

streetsofboston

07/12/2019, 2:09 PM

That is the delegate of a

PropertiesCollection.Key<T>

. How is

PropertiesCollection.Key<T>

itself defined?

k

karelpeeters

07/12/2019, 2:09 PM

Just create a pastebin somewhere with the full code that we can run.

☝️ 1

c

Chris

07/12/2019, 2:11 PM

https://github.com/JetBrains/kotlin/blob/v1.3.41/libraries/scripting/common/src/kotlin/script/experimental/util/propertiesCollection.kt#L16

This is the definition of Key itself

and on line 78 you have the invoke function which is what's called in my original screenshot

s

streetsofboston

07/12/2019, 2:18 PM

There are a loooooot of overloaded

invoke

functions there! Did you try it with an older kotlin version. The one in 1.3.41 has a newer type-inference engine… maybe that is messing up. It could be that the IDE is complaining, but compilation may be successful.

c

Chris

07/12/2019, 2:30 PM

thanks for the help, I've just created an issue on YouTrack

k

karelpeeters

07/12/2019, 4:34 PM

Link?

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