Extracted function which gets component function name for data class property.

It used to rely on the fact that class is already resolved before. Added force resolution of class, to make this function reusable in other context.

idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/usagesSearch/searchHelpers.kt

@@ -73,18 +73,30 @@ public fun PsiNamedElement.getSpecialNamesToSearch(): List<String> {
     return when {
         name == null || !Name.isValidIdentifier(name) -> Collections.emptyList<String>()
         this is JetParameter -> {
-            if (!hasValOrVarNode()) return Collections.emptyList<String>()
+            val componentFunctionName = this.dataClassComponentFunctionName()
+            if (componentFunctionName == null) return Collections.emptyList<String>()
 
-            val context = this.analyze()
-            val paramDescriptor = context[BindingContext.DECLARATION_TO_DESCRIPTOR, this] as? ValueParameterDescriptor
-            context[BindingContext.DATA_CLASS_COMPONENT_FUNCTION, paramDescriptor]?.let {
-                listOf(it.getName().asString(), JetTokens.LPAR.getValue())
-            } ?: Collections.emptyList<String>()
+            return listOf(componentFunctionName.asString(), JetTokens.LPAR.getValue())
         }
         else -> Name.identifier(name).getOperationSymbolsToSearch().map { (it as JetSingleValueToken).getValue() }
     }
 }
 
+fun JetParameter.dataClassComponentFunctionName(): Name? {
+    if (!hasValOrVarNode()) return null
+
+    // Forcing full resolve of owner class: otherwise DATA_CLASS_COMPONENT_FUNCTION won't be calculated.
+    // This is a hack, but better solution would need refactoring of data class component function resolution: they need to be resolved
+    // when resolving corresponding property.
+    LightClassUtil.getLightClassPropertyMethods(this)
+
+    val context = this.analyze()
+    val paramDescriptor = context[BindingContext.DECLARATION_TO_DESCRIPTOR, this] as? ValueParameterDescriptor
+    return context[BindingContext.DATA_CLASS_COMPONENT_FUNCTION, paramDescriptor]?.let {
+        it.getName()
+    }
+}
+
 public abstract class UsagesSearchHelper<T : PsiNamedElement> {
     protected open fun makeFilter(target: UsagesSearchTarget<T>): UsagesSearchFilter = isTargetUsage