Uast: KotlinUNestedAnnotation for processing nested annotations (IDEA-185890)

plugins/uast-kotlin/testData/AnnotationComplex.kt

@@ -0,0 +1,17 @@
+annotation class Annotation
+
+@Annotation
+class A
+
+annotation class AnnotationInner(val value: Annotation)
+
+@AnnotationArray(Annotation())
+class B1
+
+@AnnotationArray(value = Annotation())
+class B2
+
+annotation class AnnotationArray(vararg val value: Annotation)
+
+@AnnotationArray(Annotation())
+class C

plugins/uast-kotlin/testData/AnnotationComplex.log.txt

@@ -0,0 +1,30 @@
+UFile (package = )
+    UClass (name = Annotation)
+    UClass (name = A)
+        UAnnotation (fqName = Annotation)
+        UAnnotationMethod (name = A)
+    UClass (name = AnnotationInner)
+        UAnnotationMethod (name = value)
+    UClass (name = B1)
+        UAnnotation (fqName = AnnotationArray)
+            UNamedExpression (name = value)
+                UCallExpression (kind = UastCallKind(name='constructor_call'), argCount = 0))
+                    UIdentifier (Identifier (Annotation))
+                    USimpleNameReferenceExpression (identifier = <init>)
+        UAnnotationMethod (name = B1)
+    UClass (name = B2)
+        UAnnotation (fqName = AnnotationArray)
+            UNamedExpression (name = value)
+                UCallExpression (kind = UastCallKind(name='constructor_call'), argCount = 0))
+                    UIdentifier (Identifier (Annotation))
+                    USimpleNameReferenceExpression (identifier = <init>)
+        UAnnotationMethod (name = B2)
+    UClass (name = AnnotationArray)
+        UAnnotationMethod (name = value)
+    UClass (name = C)
+        UAnnotation (fqName = AnnotationArray)
+            UNamedExpression (name = value)
+                UCallExpression (kind = UastCallKind(name='constructor_call'), argCount = 0))
+                    UIdentifier (Identifier (Annotation))
+                    USimpleNameReferenceExpression (identifier = <init>)
+        UAnnotationMethod (name = C)

plugins/uast-kotlin/testData/AnnotationComplex.render.txt

@@ -0,0 +1,26 @@
+public abstract annotation Annotation {
+}
+
+public final class A {
+    public fun A() = UastEmptyExpression
+}
+
+public abstract annotation AnnotationInner {
+    public abstract fun value() : Annotation = UastEmptyExpression
+}
+
+public final class B1 {
+    public fun B1() = UastEmptyExpression
+}
+
+public final class B2 {
+    public fun B2() = UastEmptyExpression
+}
+
+public abstract annotation AnnotationArray {
+    public abstract fun value() : Annotation[] = UastEmptyExpression
+}
+
+public final class C {
+    public fun C() = UastEmptyExpression
+}