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extern/stdcxx/4.2.1/tests/regress/23.associative.stdcxx-16.cpp

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+/************************************************************************
+ *
+ * 23.associative.stdcxx-16.cpp - regression test for STDCXX-16
+ *   http://issues.apache.org/jira/browse/STDCXX-16
+ *
+ * $Id: 23.associative.stdcxx-16.cpp 580483 2007-09-28 20:55:52Z sebor $
+ *
+ ***************************************************************************
+ *
+ * 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 <set>
+#include <map>
+#include <cassert>
+
+template <class T>
+struct RuntimeCmp
+{
+    enum cmp_mode {normal, reverse};
+
+    cmp_mode mode;
+
+    RuntimeCmp (cmp_mode m = normal) : mode (m) { }
+
+    bool operator() (const T& t1, const T& t2) const {
+        return mode == normal ? t1 < t2 : t2 < t1;
+    }
+};
+
+template <class T>
+bool operator== (const RuntimeCmp <T>& lc, const RuntimeCmp <T>& rc) {
+    return lc.mode == rc.mode;
+}
+
+typedef std::set <int, RuntimeCmp <int> > IntSet;
+typedef std::map <int, int, RuntimeCmp <int> > IntMap;
+
+int main ()
+{
+    RuntimeCmp <int> reverse_order (RuntimeCmp<int>::reverse);
+
+    IntSet set1;
+    IntSet set2 (reverse_order);
+    set1 = set2;
+    assert (set1.key_comp () == set2.key_comp ());
+    assert (set1.value_comp () == set2.value_comp ());
+
+    IntMap map1;
+    IntMap map2 (reverse_order);
+    map1 = map2;
+    assert (map1.key_comp () == map2.key_comp ());
+
+    return 0;
+}