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How to get parameter names through reflection in Kotlin?

java8 has a "-parameters" argument passed to the compiler, but what about kotlin? As I can see, the kotlin compiler adds @JetValueParameter annotation with parameter names to the parameters, but one is deprived.

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Update : The Reflection API now supports getting parameter names: it KCallable.parameters

will give you a list of parameters, but it KParameter.name

will give you a name.

The current solution is to use annotation JetValueParameter

, although it is deprecated.



We are working on support for parameter names in Kotlin reflection, which will be available soon. At this point, it JetValueParameter

will be dropped in favor of the new API.

I would like to point out that the Kotlin compiler currently only generates Java 1.6 compliant JVM bytecode, while the javac MethodParameters

compliant attribute -parameters

only appeared in Java 1.8 bytecode. So you still won't be able to get the parameter names of Kotlin methods using Java reflection. We are considering support for 1.8 bytecode, although this will likely work in the future.

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