Chris@16: //  (C) Copyright Jeremy Siek 2004 
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See
Chris@16: //  accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_QUEUE_HPP
Chris@16: #define BOOST_QUEUE_HPP
Chris@16: 
Chris@16: #include <deque>
Chris@16: #include <algorithm>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: template <class _Tp, 
Chris@16:           class _Sequence = std::deque<_Tp> >
Chris@16: class queue;
Chris@16: 
Chris@16: template <class _Tp, class _Seq>
Chris@16: inline bool operator==(const queue<_Tp, _Seq>&, const queue<_Tp, _Seq>&);
Chris@16: 
Chris@16: template <class _Tp, class _Seq>
Chris@16: inline bool operator<(const queue<_Tp, _Seq>&, const queue<_Tp, _Seq>&);
Chris@16: 
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: class queue {
Chris@16: 
Chris@16: #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
Chris@16:   template <class _Tp1, class _Seq1>
Chris@16:   friend bool operator== (const queue<_Tp1, _Seq1>&,
Chris@16:                           const queue<_Tp1, _Seq1>&);
Chris@16:   template <class _Tp1, class _Seq1>
Chris@16:   friend bool operator< (const queue<_Tp1, _Seq1>&,
Chris@16:                          const queue<_Tp1, _Seq1>&);
Chris@16: #endif
Chris@16: public:
Chris@16:   typedef typename _Sequence::value_type      value_type;
Chris@16:   typedef typename _Sequence::size_type       size_type;
Chris@16:   typedef          _Sequence                  container_type;
Chris@16: 
Chris@16:   typedef typename _Sequence::reference       reference;
Chris@16:   typedef typename _Sequence::const_reference const_reference;
Chris@16: #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
Chris@16: protected:
Chris@16: #endif
Chris@16:   _Sequence c;
Chris@16: public:
Chris@16:   queue() : c() {}
Chris@16:   explicit queue(const _Sequence& __c) : c(__c) {}
Chris@16: 
Chris@16:   bool empty() const { return c.empty(); }
Chris@16:   size_type size() const { return c.size(); }
Chris@16:   reference front() { return c.front(); }
Chris@16:   const_reference front() const { return c.front(); }
Chris@16:   reference top() { return c.front(); }
Chris@16:   const_reference top() const { return c.front(); }
Chris@16:   reference back() { return c.back(); }
Chris@16:   const_reference back() const { return c.back(); }
Chris@16:   void push(const value_type& __x) { c.push_back(__x); }
Chris@16:   void pop() { c.pop_front(); }
Chris@16: 
Chris@16:   void swap(queue& other)
Chris@16:   {
Chris@16:     using std::swap;
Chris@16:     swap(c, other.c);
Chris@16:   }
Chris@16: };
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool 
Chris@16: operator==(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return __x.c == __y.c;
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool
Chris@16: operator<(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return __x.c < __y.c;
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool
Chris@16: operator!=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return !(__x == __y);
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool 
Chris@16: operator>(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return __y < __x;
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool 
Chris@16: operator<=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return !(__y < __x);
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: bool 
Chris@16: operator>=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
Chris@16: {
Chris@16:   return !(__x < __y);
Chris@16: }
Chris@16: 
Chris@16: template <class _Tp, class _Sequence>
Chris@16: inline void
Chris@16: swap(queue<_Tp, _Sequence>& __x, queue<_Tp, _Sequence>& __y)
Chris@16: { __x.swap(__y); }
Chris@16: 
Chris@16: } /* namespace boost */
Chris@16: 
Chris@16: #endif /* BOOST_QUEUE_HPP */