when finding usages of parameter of annotation class primary constructor, search also for light method generated from that parameter

#KT-9399 Fixed

compiler/light-classes/src/org/jetbrains/kotlin/asJava/LightClassUtil.kt

@@ -112,6 +112,13 @@ object LightClassUtil {
         return getPsiMethodWrapper(function)
     }
 
+    /**
+     * Returns the light method generated from the parameter of an annotation class.
+     */
+    fun getLightClassMethod(parameter: KtParameter): PsiMethod? {
+        return getPsiMethodWrapper(parameter)
+    }
+
     fun getLightClassMethods(function: KtFunction): List<PsiMethod> {
         return getPsiMethodWrappers(function, true)
     }

compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt

@@ -49,6 +49,7 @@ fun KtDeclaration.toLightElements(): List<PsiNamedElement> =
             is KtParameter -> ArrayList<PsiNamedElement>().let { elements ->
                 toPsiParameters().toCollection(elements)
                 LightClassUtil.getLightClassPropertyMethods(this).toCollection(elements)
+                toAnnotationLightMethod()?.let { elements.add(it) }
 
                 elements
             }
@@ -96,6 +97,14 @@ fun KtParameter.toPsiParameters(): Collection<PsiParameter> {
     }
 }
 
+private fun KtParameter.toAnnotationLightMethod(): PsiMethod? {
+    val parent = ownerFunction as? KtPrimaryConstructor ?: return null
+    val containingClass = parent.getContainingClassOrObject()
+    if (!containingClass.isAnnotation()) return null
+
+    return LightClassUtil.getLightClassMethod(this)
+}
+
 fun KtTypeParameter.toPsiTypeParameters(): List<PsiTypeParameter> {
     val paramList = getNonStrictParentOfType<KtTypeParameterList>()
     if (paramList == null) return listOf()

idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/ideaExtensions/KotlinReferencesSearcher.kt

@@ -273,6 +273,7 @@ class KotlinReferencesSearcher : QueryExecutorBase<PsiReference, ReferencesSearc
                 is KtParameter -> {
                     searchPropertyMethods(queryParameters, element)
                     runReadAction {
+
                         val componentFunctionDescriptor = element.dataClassComponentFunction()
                         if (componentFunctionDescriptor != null) {
                             val containingClass = element.getStrictParentOfType<KtClassOrObject>()?.toLightClass()

idea/testData/findUsages/kotlin/findParameterUsages/kotlinAnnotationConstructorParameterUsages.0.kt

@@ -0,0 +1,4 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtParameter
+// OPTIONS: usages
+
+annotation class KotlinAnnForJava(val <caret>p: String)

idea/testData/findUsages/kotlin/findParameterUsages/kotlinAnnotationConstructorParameterUsages.1.java

@@ -0,0 +1 @@
+@KotlinAnnForJava(p = "a") public class JavaClassForKotlin {}

idea/testData/findUsages/kotlin/findParameterUsages/kotlinAnnotationConstructorParameterUsages.results.txt

@@ -0,0 +1 @@
+Unclassified usage 1 @KotlinAnnForJava(p = "a") public class JavaClassForKotlin {}

idea/tests/org/jetbrains/kotlin/findUsages/FindUsagesTestGenerated.java

@@ -804,6 +804,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                 KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/findUsages/kotlin/findParameterUsages"), Pattern.compile("^(.+)\\.0\\.kt$"), true);
             }
 
+            @TestMetadata("kotlinAnnotationConstructorParameterUsages.0.kt")
+            public void testKotlinAnnotationConstructorParameterUsages() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findParameterUsages/kotlinAnnotationConstructorParameterUsages.0.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("kotlinComponentFunctionParameterUsages.0.kt")
             public void testKotlinComponentFunctionParameterUsages() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findParameterUsages/kotlinComponentFunctionParameterUsages.0.kt");