From c9fbbe74aee3c047ff28cbba8d93e4e84de8e243 Mon Sep 17 00:00:00 2001
From: Victor Petukhov <victor.petukhov@jetbrains.com>
Date: Fri, 22 Oct 2021 14:36:25 +0300
Subject: [PATCH] [FIR] Use common `isPlaceholder` check for type arguments in
 RawFirBuilder

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

diff --git a/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/RawFirBuilder.kt b/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/RawFirBuilder.kt
index 3cf4551cc89..e5e55f6b6ee 100644
--- a/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/RawFirBuilder.kt
+++ b/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/RawFirBuilder.kt
@@ -1775,10 +1775,6 @@ open class RawFirBuilder(
             }
         }
 
-        // TODO introduce placeholder projection type
-        private fun KtTypeProjection.isPlaceholderProjection() =
-            projectionKind == KtProjectionKind.NONE && (typeReference?.typeElement as? KtUserType)?.referencedName == "_"
-
         override fun visitTypeProjection(typeProjection: KtTypeProjection, data: Unit): FirElement {
             val projectionKind = typeProjection.projectionKind
             val projectionSource = typeProjection.toFirSourceElement()
@@ -1787,10 +1783,10 @@ open class RawFirBuilder(
                     source = projectionSource
                 }
             }
-            if (typeProjection.isPlaceholderProjection()) {
+            val typeReference = typeProjection.typeReference
+            if (typeReference?.isPlaceholder == true) {
                 return FirTypePlaceholderProjection
             }
-            val typeReference = typeProjection.typeReference
             val firType = typeReference.toFirOrErrorType()
             return buildTypeProjectionWithVariance {
                 source = projectionSource