PC Format (South-Africa) 2001 June/PCFJune.iso/Xenon/C++/FreeCommandLineTools.exe/Include/stack.h

C/C++ Source or Header | 2000-01-31 | 5.7 KB | 169 lines

#ifndef __STACK_H
#define __STACK_H
#pragma option push -b -a8 -pc -Vx- -Ve- -w-inl -w-aus -w-sig
// -*- C++ -*-
#ifndef __STD_STACK__
#define __STD_STACK__

/***************************************************************************
 *
 * stack - Declaration for the Standard Library stack class
 *
 ***************************************************************************
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-1999 Rogue Wave Software, Inc.  All Rights Reserved.
 *
 * This computer software is owned by Rogue Wave Software, Inc. and is
 * protected by U.S. copyright laws and other laws and by international
 * treaties.  This computer software is furnished by Rogue Wave Software,
 * Inc. pursuant to a written license agreement and may be used, copied,
 * transmitted, and stored only in accordance with the terms of such
 * license and with the inclusion of the above copyright notice.  This
 * computer software or any other copies thereof may not be provided or
 * otherwise made available to any other person.
 *
 * U.S. Government Restricted Rights.  This computer software is provided
 * with Restricted Rights.  Use, duplication, or disclosure by the
 * Government is subject to restrictions as set forth in subparagraph (c)
 * (1) (ii) of The Rights in Technical Data and Computer Software clause
 * at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
 * Commercial Computer Software û Restricted Rights at 48 CFR 52.227-19,
 * as applicable.  Manufacturer is Rogue Wave Software, Inc., 5500
 * Flatiron Parkway, Boulder, Colorado 80301 USA.
 *
 **************************************************************************/

#include <stdcomp.h>

#include <algorithm>
#include <deque>

#ifndef _RWSTD_NO_NAMESPACE
namespace std {
#endif

  template <class T, class Container _RWSTD_COMPLEX_DEFAULT(deque<T>) >
  class stack;

#ifdef _RWSTD_NO_UNDEFINED_FRIEND
  template <class T, class Container>
  inline bool operator==(const stack<T,Container>& x,
                         const stack<T,Container>& y);
  template <class T, class Container>
  inline bool operator<(const stack<T,Container>& x,
                        const stack<T,Container>& y);
#endif

  template <class T, class Container>
  class stack
  {
#ifdef __TURBOC__
    friend bool (std::operator==) (const stack<T,Container>& x,
                            const stack<T,Container>& y);
    friend bool (std::operator<) (const stack<T,Container>& x,
                           const stack<T,Container>& y);
#else
    friend bool operator== (const stack<T,Container>& x,
                            const stack<T,Container>& y);
    friend bool operator< (const stack<T,Container>& x,
                           const stack<T,Container>& y);
#endif
  public:

    typedef _TYPENAME Container::value_type         value_type;
    typedef _TYPENAME Container::size_type          size_type;
    typedef _TYPENAME Container::reference          reference;
    typedef _TYPENAME Container::const_reference    const_reference;
    typedef Container                               container_type;

  protected:

    Container c;

  public:
    _EXPLICIT stack(const Container& co _RWSTD_DEFAULT_ARG(Container()))
      : c(co)
    { ; }

#ifdef _RWSTD_NO_DEFAULT_TEMPLATE_ARGS
    stack(void) : c(Container())
    { ; }
#endif

    bool              empty ()                    const { return c.empty(); }
    size_type         size  ()                    const { return c.size();  }
    reference         top   ()                          { return c.back();  }
    const_reference   top   ()                    const { return c.back();  }
    void              push  (const value_type& x)       { c.push_back(x);   }
    void              pop   ()                          { c.pop_back();     }
  };

  template <class T, class Container>
  inline bool operator== (const stack<T,Container>& x,
                          const stack<T,Container>& y)
  {
    return x.c == y.c;
  }

  template <class T, class Container>
  inline bool operator< (const stack<T,Container>& x,
                         const stack<T,Container>& y)
  {
    return x.c < y.c;
  }

  template <class T, class Container>
  inline bool operator!= (const stack<T,Container>& x,
                          const stack<T,Container>& y)
  {
    return !(x == y);
  }

  template <class T, class Container>
  inline bool operator> (const stack<T,Container>& x,
                         const stack<T,Container>& y)
  {
    return y < x;
  }

  template <class T, class Container>
  inline bool operator>= (const stack<T,Container>& x,
                          const stack<T,Container>& y)
  {
    return !(x < y);
  }

  template <class T, class Container>
  inline bool operator<= (const stack<T,Container>& x,
                          const stack<T,Container>& y)
  {
    return !(y <  x);
  }

#ifndef _RWSTD_NO_NAMESPACE
}
#endif

#endif /*__STD_STACK__*/

#ifndef __USING_STD_NAMES__
  using namespace std;
#endif

#pragma option pop
#endif /* __STACK_H */