Uast: KotlinUNestedAnnotation with light annotation (IDEA-185890)

plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUAnnotation.kt

@@ -122,11 +122,12 @@ class KotlinUNestedAnnotation(
     givenParent: UElement?,
     private val classDescriptor: ClassDescriptor?
 ) : KotlinUAnnotationBase(original, givenParent) {
-    override val javaPsi: PsiAnnotation? = null
+    override val javaPsi: PsiAnnotation? by lazy { original.toLightAnnotation() }
     override val annotationClassDescriptor: ClassDescriptor?
         get() = classDescriptor
 
     override fun annotationUseSiteTarget(): AnnotationUseSiteTarget? = null
+
 }
 
 

plugins/uast-kotlin/tests/KotlinUastApiTest.kt

@@ -1,5 +1,6 @@
 package org.jetbrains.uast.test.kotlin
 
+import com.intellij.psi.PsiAnnotation
 import com.intellij.psi.PsiModifier
 import com.intellij.testFramework.UsefulTestCase
 import org.jetbrains.kotlin.asJava.toLightAnnotation
@@ -288,6 +289,9 @@ class KotlinUastApiTest : AbstractKotlinUastTest() {
                         ?: throw AssertionError("haven't got annotation from $referenceExpression(${referenceExpression?.javaClass})")
 
                 assertEquals("Annotation", convertedUAnnotation.qualifiedName)
+                val lightAnnotation = convertedUAnnotation.getAsJavaPsiElement(PsiAnnotation::class.java)
+                        ?: throw AssertionError("can't get lightAnnotation from $convertedUAnnotation")
+                assertEquals("Annotation", lightAnnotation.qualifiedName)
             }
     }