From 70a38319d650fa0d0dacf728375fa701f320b8fc Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@Germany>
Date: Thu, 16 Oct 2008 14:27:16 +0200
Subject: [PATCH] added xfer::operator->() for easier de-referencing of
 underlying methods

---
 applications/test/xfer/xferListTest.C | 18 ++++++++++++++++--
 src/OpenFOAM/memory/xfer/xfer.H       |  5 ++++-
 src/OpenFOAM/memory/xfer/xferI.H      |  6 ++++++
 3 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/applications/test/xfer/xferListTest.C b/applications/test/xfer/xferListTest.C
index 6fce6b2bd0..ed52115c93 100644
--- a/applications/test/xfer/xferListTest.C
+++ b/applications/test/xfer/xferListTest.C
@@ -55,8 +55,6 @@ int main(int argc, char *argv[])
     xfer<List<label> > xA(lstA, true);
     xfer<List<label> > xB;
 
-//    List<label> lstB( xferTmp(List<label>, lstC) );
-//    List<label> lstB( xfer<List<label> >(lstC) );
     List<label> lstB( xA );
 
     Info<< "xA: " << *xA << endl;
@@ -74,12 +72,28 @@ int main(int argc, char *argv[])
     Info<< "lstC: " << lstC << endl;
 
     xB = xA;
+    
+    List<label> lstD( xferCopy(List<label>, lstC) );
+    List<label> lstE( xferMove(List<label>, lstC) );
+    
+    // this must be empty
+    List<label> lstF( xferCopy(List<label>, lstC) );
 
     Info<< "xA: " << *xA << endl;
     Info<< "xB: " << *xB << endl;
     Info<< "lstA: " << lstA << endl;
     Info<< "lstB: " << lstB << endl;
     Info<< "lstC: " << lstC << endl;
+    Info<< "lstD: " << lstD << endl;
+    Info<< "lstE: " << lstE << endl;
+    Info<< "lstF: " << lstF << endl;
+
+    Info<< "xB size: " << *xB << endl;
+
+    // clear the underlying List
+    xB->clear();
+
+    Info<< "xB size: " << *xB << endl;
 
     return 0;
 }
diff --git a/src/OpenFOAM/memory/xfer/xfer.H b/src/OpenFOAM/memory/xfer/xfer.H
index 45912d39a8..653f4115db 100644
--- a/src/OpenFOAM/memory/xfer/xfer.H
+++ b/src/OpenFOAM/memory/xfer/xfer.H
@@ -30,7 +30,7 @@ Description
     of objects of type \<T\>.
 
     Since it is decided upon construction of the xfer object whether the
-    parameter is to be copied or transferred, the contents of resulting
+    parameter is to be copied or transferred, the contents of the resulting
     object can be transferred unconditionally.
 
     This greatly simplifies defining the constructors for other classes
@@ -104,6 +104,9 @@ public:
         //- Reference to the underlying datatype
         inline T& operator*() const;
 
+        //- Pointer to the underlying datatype
+        inline T* operator->() const;
+
 };
 
 
diff --git a/src/OpenFOAM/memory/xfer/xferI.H b/src/OpenFOAM/memory/xfer/xferI.H
index 8ad7ceb3aa..ff70fbf612 100644
--- a/src/OpenFOAM/memory/xfer/xferI.H
+++ b/src/OpenFOAM/memory/xfer/xferI.H
@@ -110,4 +110,10 @@ inline T& Foam::xfer<T>::operator*() const
     return *ptr_;
 }
 
+template<class T>
+inline T* Foam::xfer<T>::operator->() const
+{
+    return ptr_;
+}
+
 // ************************************************************************* //