From 0221eda956814823ef7fb207c8ab8576060a3705 Mon Sep 17 00:00:00 2001
From: Brent Simmons <brent@ranchero.com>
Date: Sat, 16 Dec 2017 11:15:36 -0800
Subject: [PATCH] =?UTF-8?q?Add=20Node.existingOrNewChildNode=20=E2=80=94?=
 =?UTF-8?q?=20recycles=20an=20existing=20node.=20Creates=20a=20new=20node?=
 =?UTF-8?q?=20only=20when=20needed.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Frameworks/RSTree/RSTree/Node.swift | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Frameworks/RSTree/RSTree/Node.swift b/Frameworks/RSTree/RSTree/Node.swift
index bf2270253..d0053f6ce 100644
--- a/Frameworks/RSTree/RSTree/Node.swift
+++ b/Frameworks/RSTree/RSTree/Node.swift
@@ -81,6 +81,14 @@ public final class Node: Hashable {
 		return node
 	}
 
+	public func existingOrNewChildNode(with representedObject: AnyObject) -> Node {
+
+		if let node = childNodeRepresentingObject(representedObject) {
+			return node
+		}
+		return createChildNode(representedObject)
+	}
+
 	public func createChildNode(_ representedObject: AnyObject) -> Node {
 
 		// Just creates — doesn’t add it.