1 files changed, 66 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/client/PrivateImplPrivate.h b/qpid/cpp/src/qpid/client/PrivateImplPrivate.h
new file mode 100644
index 0000000000..021456e085
--- /dev/null
+++ b/qpid/cpp/src/qpid/client/PrivateImplPrivate.h
@@ -0,0 +1,66 @@
+#ifndef QPID_CLIENT_PRIVATEIMPLPRIVATE_H
+#define QPID_CLIENT_PRIVATEIMPLPRIVATE_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include <algorithm>
+
+namespace qpid {
+namespace client {
+
+/** @file
+ * Implementation of PrivateImpl functions, to include in .cpp file of handle subclasses.
+ * T can be any class with value semantics.
+ */
+
+template <class T>
+PrivateImpl<T>::PrivateImpl(T* p) : impl(p) { assert(impl); }
+
+template <class T>
+PrivateImpl<T>::~PrivateImpl() { delete impl; }
+
+template <class T>
+PrivateImpl<T>::PrivateImpl(const PrivateImpl& h) : impl(new T(*h.impl)) {}
+
+template <class T>
+PrivateImpl<T>& PrivateImpl<T>::operator=(const PrivateImpl<T>& h) { PrivateImpl<T>(h).swap(*this); return *this; }
+
+template <class T>
+void PrivateImpl<T>::swap(PrivateImpl<T>& h) { std::swap(impl, h.impl); }
+
+
+/** Access to private impl of a PrivateImpl */
+template <class T>
+class PrivateImplPrivate {
+  public:
+    static T* get(const PrivateImpl<T>& h) { return h.impl; }
+    static void set(PrivateImpl<T>& h, const T& p) { PrivateImpl<T>(p).swap(h); }
+};
+
+template<class T> T* privateImplGetPtr(PrivateImpl<T>& h) { return PrivateImplPrivate<T>::get(h); }
+template<class T> T* privateImplGetPtr(const PrivateImpl<T>& h) { return PrivateImplPrivate<T>::get(h); }
+template<class T> void privateImplSetPtr(PrivateImpl<T>& h, const T*& p) { PrivateImplPrivate<T>::set(h, p); }
+
+}} // namespace qpid::client
+
+#endif  /*!QPID_CLIENT_PRIVATEIMPLPRIVATE_H*/
+