Fixed EA-70940

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinResolveCache.kt

@@ -84,6 +84,7 @@ private class KotlinResolveCache(
     }, false)
 
     fun getAnalysisResultsForElements(elements: Collection<JetElement>): AnalysisResult {
+        assert(elements.isNotEmpty(), "elements collection should not be empty")
         val slruCache = synchronized(analysisResults) {
             analysisResults.getValue()!!
         }

idea/src/org/jetbrains/kotlin/idea/j2k/J2kPostProcessor.kt

@@ -19,7 +19,6 @@ package org.jetbrains.kotlin.idea.j2k
 import com.intellij.openapi.editor.RangeMarker
 import com.intellij.openapi.util.TextRange
 import com.intellij.psi.PsiElement
-import com.intellij.psi.PsiReference
 import com.intellij.psi.codeStyle.CodeStyleManager
 import com.intellij.psi.search.LocalSearchScope
 import com.intellij.psi.search.searches.ReferencesSearch
@@ -52,6 +51,7 @@ public class J2kPostProcessor(private val formatCode: Boolean) : PostProcessor {
         else {
             file.elementsInRange(range).filterIsInstance<JetElement>()
         }
+        if (elements.isEmpty()) return BindingContext.EMPTY
         return file.getResolutionFacade().analyzeFullyAndGetResult(elements).bindingContext
     }