1 files changed, 60 insertions, 0 deletions
diff --git a/cpp/src/Ice/HashUtil.h b/cpp/src/Ice/HashUtil.h
new file mode 100644
index 00000000000..ce2e8b941bc
--- /dev/null
+++ b/cpp/src/Ice/HashUtil.h
@@ -0,0 +1,60 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#ifndef ICE_HASH_UTIL_H
+#define ICE_HASH_UTIL_H
+
+namespace IceInternal
+{
+
+inline void
+hashAdd(Ice::Int& hashCode, Ice::Int value)
+{
+    hashCode = hashCode * 5 + value;
+}
+
+inline void
+hashAdd(Ice::Int& hashCode, bool value)
+{
+    hashCode = hashCode * 5 + static_cast<Ice::Int>(value);
+}
+
+inline void
+hashAdd(Ice::Int& hashCode, const std::string& value)
+{
+    for(std::string::const_iterator p = value.begin(); p != value.end(); ++p)
+    {
+        hashCode = 5 * hashCode + *p;
+    }    
+}
+
+template<typename T> void
+hashAdd(Ice::Int& hashCode, const std::vector<T>& seq)
+{
+    for(typename std::vector<T>::const_iterator p = seq.begin(); p != seq.end(); ++p)
+    {
+        hashAdd(hashCode, *p);
+    }
+}
+
+template<typename K, typename V> void
+hashAdd(Ice::Int& hashCode, const std::map<K, V>& map)
+{
+    for(typename std::map<K, V>::const_iterator p = map.begin(); p != map.end(); ++p)
+    {
+        hashAdd(hashCode, p->first);
+        hashAdd(hashCode, p->second);
+    }
+}
+
+
+}
+
+#endif
+