How can I invoke a method on an object companion i...

# compiler

[Federico Tomassetti]

How can I invoke a method on an object companion in an Ir Plugin?

private fun IrBuilderWithScope.dataType(pluginContext: IrPluginContext, irType: IrType): IrExpression {
             ...
            val primitiveTypeClass = pluginContext.referenceClass(PrimitiveType::class.classId)!!
            val primitiveTypeCompanionClass = (primitiveTypeClass.owner as IrClass).nestedClasses.find { it.isCompanion }!!
            val primitiveTypeCompanionGet = primitiveTypeCompanionClass.functions.find { it.name.asString() == PrimitiveType.Companion::get.name }!!
            primitiveTypeClass.owner.companionObject()
            // FIXME I think I need somehow to indicate the PrimitiveType Companion Object
            return irCall(primitiveTypeCompanionGet).apply {
                // MAYBE SHOULD I SET THE DISPATCHER RECEIVER? HOW? TO WHICH VALUE?
                // Pass the primitive type name
                putValueArgument(0, irString(irType.classFqName!!.asString()))
            }
        }
    }

[Javier]

I highly recommend to set in the test file exactly what you want to do but “duplicated” and then debug to see what dispatchers you are missing and so on.

fun box():String {
    val isSame = whatever() == Foo2.some2()

    return if (isSame) “Ok” else “Fail”
}

class Foo {
    companion object {
        some() = “some”
    }
}

class Foo2 {
    companion object {
        some2() = “some”
    }
}

[Javier]

whatever() should be Foo.some(), you need to compare what you are building with the Foo2.some2() you already have in the tree to extract it and see each value.

[Federico Tomassetti]

In the end I needed to use irGetObject(CompanionClass)