STL-style intrsive linked lists, single (ISList) and double (IList)

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@629253 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 62 insertions, 0 deletions

diff --git a/cpp/src/qpid/pointer_to_other.h b/cpp/src/qpid/pointer_to_other.h
new file mode 100644
index 0000000000..a99dc89658
--- /dev/null
+++ b/cpp/src/qpid/pointer_to_other.h
@@ -0,0 +1,62 @@
+#ifndef QPID_POINTERTOOTHER_H
+#define QPID_POINTERTOOTHER_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.
+ *
+ */
+
+namespace qpid {
+
+// Defines the same pointer type (raw or smart) to another pointee type
+
+template<class T, class U>
+struct pointer_to_other;
+
+template<class T, class U,
+                  template<class> class Sp>
+struct pointer_to_other< Sp<T>, U >
+                  {
+                      typedef Sp<U> type;
+                  };
+
+template<class T, class T2, class U,
+         template<class, class> class Sp>
+struct pointer_to_other< Sp<T, T2>, U >
+         {
+             typedef Sp<U, T2> type;
+         };
+
+template<class T, class T2, class T3, class U,
+         template<class, class, class> class Sp>
+struct pointer_to_other< Sp<T, T2, T3>, U >
+         {
+             typedef Sp<U, T2, T3> type;
+         };
+
+template<class T, class U>
+struct pointer_to_other< T*, U >
+{
+    typedef U* type;
+};
+
+} // namespace qpid
+
+
+
+#endif  /*!QPID_POINTERTOOTHER_H*/