From 19e38bbc725ec68c9d40bc5c4ad8945266df7231 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Wed, 20 Dec 2017 18:33:47 +0100
Subject: [PATCH] Do not run annotation checkers for every non-annotated
 element

---
 .../src/org/jetbrains/kotlin/resolve/AnnotationChecker.kt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/AnnotationChecker.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/AnnotationChecker.kt
index f6e2d235380..c52af26916f 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/AnnotationChecker.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/AnnotationChecker.kt
@@ -44,7 +44,6 @@ class AnnotationChecker(
     private val additionalCheckers: Iterable<AdditionalAnnotationChecker>,
     private val languageVersionSettings: LanguageVersionSettings
 ) {
-
     fun check(annotated: KtAnnotated, trace: BindingTrace, descriptor: DeclarationDescriptor? = null) {
         val actualTargets = getActualTargetList(annotated, descriptor, trace)
         checkEntries(annotated.annotationEntries, actualTargets, trace, annotated)
@@ -106,6 +105,8 @@ class AnnotationChecker(
         trace: BindingTrace,
         annotated: KtAnnotated? = null
     ) {
+        if (entries.isEmpty()) return
+
         val entryTypesWithAnnotations = hashMapOf<KotlinType, MutableList<AnnotationUseSiteTarget?>>()
 
         for (entry in entries) {
@@ -124,7 +125,10 @@ class AnnotationChecker(
 
             existingTargetsForAnnotation.add(useSiteTarget)
         }
-        additionalCheckers.forEach { it.checkEntries(entries, actualTargets.defaultTargets, trace) }
+
+        for (checker in additionalCheckers) {
+            checker.checkEntries(entries, actualTargets.defaultTargets, trace)
+        }
     }
 
     private fun checkAnnotationEntry(entry: KtAnnotationEntry, actualTargets: TargetList, trace: BindingTrace) {