From 5e74e289a52e8dac97a6d91ce7caf27698e32dde Mon Sep 17 00:00:00 2001
From: Will Bainbridge <http://cfd.direct>
Date: Tue, 3 Jan 2023 08:45:44 +0000
Subject: [PATCH] SubField: Added "reuse" constructor

This doesn't add any functionality, but it is necessary to unify the
interface with Field for classes that are templated on their container
---
 src/OpenFOAM/fields/Fields/Field/SubField.H  |  5 ++++-
 src/OpenFOAM/fields/Fields/Field/SubFieldI.H | 14 +++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/OpenFOAM/fields/Fields/Field/SubField.H b/src/OpenFOAM/fields/Fields/Field/SubField.H
index 68674044d6..5ce67ab1e4 100644
--- a/src/OpenFOAM/fields/Fields/Field/SubField.H
+++ b/src/OpenFOAM/fields/Fields/Field/SubField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2020 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2023 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -95,6 +95,9 @@ public:
         //- Copy constructor
         inline SubField(const SubField<Type>&);
 
+        //- Copy constructor or reuse as specified
+        inline SubField(SubField<Type>&, bool reuse);
+
 
     // Member Functions
 
diff --git a/src/OpenFOAM/fields/Fields/Field/SubFieldI.H b/src/OpenFOAM/fields/Fields/Field/SubFieldI.H
index b3633ed50f..fc29b36052 100644
--- a/src/OpenFOAM/fields/Fields/Field/SubFieldI.H
+++ b/src/OpenFOAM/fields/Fields/Field/SubFieldI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2020 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2023 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -79,6 +79,18 @@ inline Foam::SubField<Type>::SubField
 {}
 
 
+template<class Type>
+inline Foam::SubField<Type>::SubField
+(
+    SubField<Type>& sfield,
+    bool reuse
+)
+:
+    tmp<SubField<Type>>::refCount(),
+    SubList<Type>(sfield)
+{}
+
+
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
 template<class Type>