From 531f695404e086388fd5bae3682355272140cc3a Mon Sep 17 00:00:00 2001
From: Dmitry Gridin <dmitry.gridin@jetbrains.com>
Date: Mon, 26 Aug 2019 14:01:55 +0700
Subject: [PATCH] CreateExpectedFix: remove recursive call from
 `findAndApplyExistingClasses`

---
 .../quickfix/expectactual/CreateExpectedFix.kt  | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateExpectedFix.kt b/idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateExpectedFix.kt
index a2256110766..41edb5133d1 100644
--- a/idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateExpectedFix.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateExpectedFix.kt
@@ -164,14 +164,17 @@ class CreateExpectedClassFix(
     generateClassOrObject(project, true, element, checker)
 })
 
-private tailrec fun TypeAccessibilityChecker.findAndApplyExistingClasses(elements: Collection<KtNamedDeclaration>): HashSet<String> {
-    val classes = elements.filterIsInstance<KtClassOrObject>()
-    val existingNames = classes.mapNotNull { it.fqName?.asString() }.toHashSet()
-    existingFqNames = existingNames
+private fun TypeAccessibilityChecker.findAndApplyExistingClasses(elements: Collection<KtNamedDeclaration>): HashSet<String> {
+    var classes = elements.filterIsInstance<KtClassOrObject>()
+    while (true) {
+        val existingNames = classes.mapNotNull { it.fqName?.asString() }.toHashSet()
+        existingFqNames = existingNames
 
-    val newExistingClasses = classes.filter { isCorrectAndHaveNonPrivate(it) }
-    return if (classes.size == newExistingClasses.size) existingNames
-    else findAndApplyExistingClasses(newExistingClasses)
+        val newExistingClasses = classes.filter { isCorrectAndHaveNonPrivate(it) }
+        if (classes.size == newExistingClasses.size) return existingNames
+
+        classes = newExistingClasses
+    }
 }
 
 private fun showUnknownTypesDialog(project: Project, declarationsWithNonExistentClasses: Collection<KtNamedDeclaration>): Boolean {