From 6e621ab1149cc97530dc87d950e60b63fe14fb72 Mon Sep 17 00:00:00 2001
From: Evgeny Gerashchenko <Evgeny.Gerashchenko@jetbrains.com>
Date: Tue, 20 Jan 2015 21:45:04 +0300
Subject: [PATCH] Lazy usage search (using SearchQuery as Iterable leads to
 computing all results, which is wasting time).

---
 .../kotlin/idea/inspections/UnusedSymbolInspection.kt          | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt b/idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt
index db77f176608..8dad5c64acd 100644
--- a/idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt
@@ -51,6 +51,7 @@ import org.jetbrains.kotlin.psi.JetParameter
 import org.jetbrains.kotlin.idea.search.usagesSearch.dataClassComponentFunctionName
 import org.jetbrains.kotlin.psi.JetTypeParameter
 import org.jetbrains.kotlin.idea.search.usagesSearch.DefaultSearchHelper
+import com.intellij.util.Processor
 
 public class UnusedSymbolInspection : AbstractKotlinInspection() {
     private val javaInspection = UnusedDeclarationInspection()
@@ -197,6 +198,6 @@ public class UnusedSymbolInspection : AbstractKotlinInspection() {
         val request = searchHelper.newRequest(UsagesSearchTarget(declaration, useScope))
         val query = UsagesSearch.search(request)
 
-        return query.any { !declaration.isAncestor(it.getElement()) }
+        return !query.forEach(Processor { declaration.isAncestor(it.getElement()) })
     }
 }
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