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extern/stdcxx/4.2.1/examples/tutorial/widwork.cpp

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+/**************************************************************************
+ *
+ * widwork.cpp - Widget works inventory example.
+ *
+ * $Id: widwork.cpp 550991 2007-06-26 23:58:07Z 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.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <algorithm>
+#include <examples.h>
+#include <widwork.h>
+
+std::ostream& operator<< ( std::ostream& out, const Widget& w )
+{
+        return out << "Widget " << w.id;
+}
+
+bool operator== (const Widget& lhs, const Widget& rhs) {
+    return lhs.id == rhs.id;
+}
+
+
+bool operator< (const Widget& lhs, const Widget& rhs) {
+    return lhs.id < rhs.id;
+}
+
+
+bool WidgetTester::operator () (const Widget & wid, int testid) const 
+{
+    return wid.id == testid;
+}
+
+
+void inventory::order (int wid) {
+    
+    std::cout << "Received order for widget type " << wid << std::endl;
+
+    widgetList::iterator
+        wehave = std::find_if (on_hand.begin (), on_hand.end (), 
+                               std::bind2nd (WidgetTester (), wid));
+    if (wehave != on_hand.end ()) {
+        std::cout << "Ship " << *wehave << std::endl;
+        on_hand.erase (wehave);
+    }
+    else {
+        std::cout << "Back order widget of type "  << wid  << std::endl;
+        on_order.push_front (wid);
+    }
+}
+
+
+void inventory::receive (int wid) {
+
+    std::cout << "Received shipment of widget type " << wid << std::endl;
+
+    idList::iterator weneed = std::find (on_order.begin (),
+                                         on_order.end (), wid);
+    if (weneed != on_order.end ()) {
+        std::cout << "Ship " << Widget (wid) << " to fill back order"
+                  << std::endl;
+        on_order.erase (weneed);
+    }
+    else
+        on_hand.push_front (Widget (wid));
+}
+
+
+int main ()
+{
+    std::cout << "Widget Works test program" << std::endl;
+
+    inventory stock;
+    stock.receive (1);
+    stock.receive (2);
+    stock.receive (3);
+    stock.order (2);
+    stock.order (2);
+    stock.order (3);
+    stock.receive (2);
+    
+    std::cout << "End of widget words test program" << std::endl;
+
+    return 0;
+}
+
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