From dcb200d6d3c722f12bde8352c4a02c3390ec6318 Mon Sep 17 00:00:00 2001
From: Kirill Rakhman <kirill.rakhman@jetbrains.com>
Date: Thu, 22 Jun 2023 11:10:20 +0200
Subject: [PATCH] [FIR LT] Optimize LighterASTNode.getChildNodeByType

Instead of creating a list first, return the first matching element of
the array.
---
 .../fir/lightTree/converter/AbstractLightTreeRawFirBuilder.kt   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/AbstractLightTreeRawFirBuilder.kt b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/AbstractLightTreeRawFirBuilder.kt
index 98b2d797bda..2f66167093b 100644
--- a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/AbstractLightTreeRawFirBuilder.kt
+++ b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/AbstractLightTreeRawFirBuilder.kt
@@ -99,7 +99,7 @@ abstract class AbstractLightTreeRawFirBuilder(
     }
 
     override fun LighterASTNode.getChildNodeByType(type: IElementType): LighterASTNode? {
-        return this.getChildNodesByType(type).firstOrNull()
+        return getChildrenAsArray().firstOrNull { it?.tokenType == type }
     }
 
     override val LighterASTNode?.receiverExpression: LighterASTNode?