From ee1ce184f9c36b3ccff6e23bc940c3b64d56783d Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <Nikolay.Krasko@jetbrains.com>
Date: Mon, 5 Dec 2016 20:25:31 +0300
Subject: [PATCH] Don't resolve reference if result is useless

---
 .../introduce/extractionEngine/extractableAnalysisUtil.kt       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractionEngine/extractableAnalysisUtil.kt b/idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractionEngine/extractableAnalysisUtil.kt
index d3aa9950998..31b91ff9dbb 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractionEngine/extractableAnalysisUtil.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractionEngine/extractableAnalysisUtil.kt
@@ -804,9 +804,9 @@ fun ExtractableCodeDescriptor.validate(target: ExtractionTarget = ExtractionTarg
             object : KtTreeVisitorVoid() {
                 override fun visitUserType(userType: KtUserType) {
                     val refExpr = userType.referenceExpression ?: return
-                    val declaration = refExpr.mainReference.resolve() as? PsiNamedElement ?: return
                     val diagnostics = bindingContext.diagnostics.forElement(refExpr)
                     diagnostics.firstOrNull { it.factory == Errors.INVISIBLE_REFERENCE }?.let {
+                        val declaration = refExpr.mainReference.resolve() as? PsiNamedElement ?: return
                         conflicts.putValue(declaration, getDeclarationMessage(declaration, "0.will.become.invisible.after.extraction"))
                     }
                 }