From 7c5adeccc8cb7f9e996098420de3d807a2afcaef Mon Sep 17 00:00:00 2001
From: Nicolay Mitropolsky <nicolay.mitropolsky@jetbrains.com>
Date: Tue, 6 Apr 2021 22:43:47 +0300
Subject: [PATCH] EA-254537: `Plow.mapNotNull` added and used

GitOrigin-RevId: 8c34a6310781ebecc413ef3e73963a4a861f30f2
---
 platform/util-ex/src/com/intellij/util/Plow.kt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/platform/util-ex/src/com/intellij/util/Plow.kt b/platform/util-ex/src/com/intellij/util/Plow.kt
index 0ab918673ebe..120b80815eb6 100644
--- a/platform/util-ex/src/com/intellij/util/Plow.kt
+++ b/platform/util-ex/src/com/intellij/util/Plow.kt
@@ -42,6 +42,8 @@ class Plow<T> private constructor(private val producingFunction: (Processor<T>)
     Plow { pr -> producingFunction(transformation(pr)) }
 
   fun <R> map(mapping: (T) -> R): Plow<R> = transform { pr -> Processor { v -> pr.process(mapping(v)) } }
+  
+  fun <R> mapNotNull(mapping: (T) -> R?): Plow<R> = transform { pr -> Processor { v -> mapping(v)?.let { pr.process(it) } ?: true } }
 
   fun filter(test: (T) -> Boolean): Plow<T> = transform { pr -> Processor { v -> !test(v) || pr.process(v) } }