From fa3ab5c65382b5c8dab0bcf2bd6fcc643fae7918 Mon Sep 17 00:00:00 2001
From: Valentin Shergin <shergin@fb.com>
Date: Wed, 13 Nov 2019 14:19:59 -0800
Subject: [PATCH] Fabric: Add and subtract operations for RectangleEdges<T>

Summary:
We will use it soon for `EdgeInsets`

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: sammy-SC

Differential Revision: D18444732

fbshipit-source-id: f03aa2a8889d426095a954d88f9cb6172c3e376e
---
 ReactCommon/fabric/graphics/Geometry.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/ReactCommon/fabric/graphics/Geometry.h b/ReactCommon/fabric/graphics/Geometry.h
index d3a3846961c..b1c05ab7a95 100644
--- a/ReactCommon/fabric/graphics/Geometry.h
+++ b/ReactCommon/fabric/graphics/Geometry.h
@@ -141,6 +141,26 @@ struct RectangleEdges {
   }
 };
 
+template <typename T>
+RectangleEdges<T> operator+(
+    RectangleEdges<T> const &lhs,
+    RectangleEdges<T> const &rhs) {
+  return RectangleEdges<T>{lhs.left + rhs.left,
+                           lhs.top + rhs.top,
+                           lhs.right + rhs.right,
+                           lhs.bottom + rhs.bottom};
+}
+
+template <typename T>
+RectangleEdges<T> operator-(
+    RectangleEdges<T> const &lhs,
+    RectangleEdges<T> const &rhs) {
+  return RectangleEdges<T>{lhs.left - rhs.left,
+                           lhs.top - rhs.top,
+                           lhs.right - rhs.right,
+                           lhs.bottom - rhs.bottom};
+}
+
 /*
  * Generic data structure describes some values associated with *corners*
  * of a rectangle.