137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
#include "stlexam.h"
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#pragma hdrstop
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/**************************************************************************
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*
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* widwork.cpp - widget works, from Chapter 6.3
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*
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***************************************************************************
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*
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* (c) Copyright 1994, 1998 Rogue Wave Software, Inc.
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* ALL RIGHTS RESERVED
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*
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* The software and information contained herein are proprietary to, and
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* comprise valuable trade secrets of, Rogue Wave Software, Inc., which
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* intends to preserve as trade secrets such software and information.
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* This software is furnished pursuant to a written license agreement and
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* may be used, copied, transmitted, and stored only in accordance with
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* the terms of such license and with the inclusion of the above copyright
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* notice. This software and information or any other copies thereof may
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* not be provided or otherwise made available to any other person.
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*
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* Notwithstanding any other lease or license that may pertain to, or
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* accompany the delivery of, this computer software and information, the
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* rights of the Government regarding its use, reproduction and disclosure
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* are as set forth in Section 52.227-19 of the FARS Computer
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* Software-Restricted Rights clause.
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*
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
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* Technical Data and Computer Software clause at DFARS 252.227-7013.
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* Contractor/Manufacturer is Rogue Wave Software, Inc.,
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* P.O. Box 2328, Corvallis, Oregon 97339.
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*
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* This computer software and information is distributed with "restricted
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* rights." Use, duplication or disclosure is subject to restrictions as
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* set forth in NASA FAR SUP 18-52.227-79 (April 1985) "Commercial
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* Computer Software-Restricted Rights (April 1985)." If the Clause at
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* 18-52.227-74 "Rights in Data General" is specified in the contract,
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* then the "Alternate III" clause applies.
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*
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**************************************************************************/
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# include <list>
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# include <algorithm>
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# include <functional>
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#ifdef _RW_STD_IOSTREAM
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#include <iostream>
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#else
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#include <iostream.h>
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#endif
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#ifndef _RWSTD_NO_NAMESPACE
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using namespace std;
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using namespace std::rel_ops;
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#endif
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class Widget
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{
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public:
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Widget(int a = 0) : id(a) { }
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void operator= (const Widget& rhs) { id = rhs.id; }
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int id;
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friend ostream & operator << (ostream & out, const Widget & w)
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{ return out << "Widget " << w.id; }
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};
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bool operator== (const Widget& lhs, const Widget& rhs)
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{ return lhs.id == rhs.id; }
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bool operator< (const Widget& lhs, const Widget& rhs)
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{ return lhs.id < rhs.id; }
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struct WidgetTester : binary_function<Widget, int, bool>
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{
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public:
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bool operator () (const Widget & wid, int testid) const
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{ return wid.id == testid; }
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};
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class inventory
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{
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public:
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void order (int wid); // Process order for widget type wid.
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void receive (int wid); // Receive widget of type wid in shipment.
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private:
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list<Widget,allocator<void> > on_hand;
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list<int,allocator<int> > on_order;
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};
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void inventory::order (int wid)
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{
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cout << "Received order for widget type " << wid << endl;
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list<Widget,allocator<void> >::iterator wehave = find_if(on_hand.begin(), on_hand.end(),
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bind2nd(WidgetTester(), wid));
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if (wehave != on_hand.end())
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{
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cout << "Ship " << *wehave << endl;
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on_hand.erase(wehave);
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}
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else
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{
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cout << "Back order widget of type " << wid << endl;
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on_order.push_front(wid);
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}
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}
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void inventory::receive (int wid)
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{
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cout << "Received shipment of widget type " << wid << endl;
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list<int,allocator<int> >::iterator weneed = find(on_order.begin(), on_order.end(), wid);
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if (weneed != on_order.end())
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{
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cout << "Ship " << Widget(wid) << " to fill back order" << endl;
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on_order.erase(weneed);
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}
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else
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on_hand.push_front(Widget(wid));
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}
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int main ()
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{
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cout << "Widget Works test program" << endl;
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inventory stock;
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stock.receive(1);
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stock.receive(2);
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stock.receive(3);
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stock.order(2);
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stock.order(2);
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stock.order(3);
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stock.receive(2);
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cout << "End of widget words test program" << endl;
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return 0;
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}
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