1 files changed, 134 insertions, 0 deletions
diff --git a/contrib/libstdc++/stl/stl_queue.h b/contrib/libstdc++/stl/stl_queue.h
new file mode 100644
index 000000000000..ff6eedeb7017
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+++ b/contrib/libstdc++/stl/stl_queue.h
@@ -0,0 +1,134 @@
+/*
+ *
+ * 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) 1996,1997
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * 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.  Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ */
+
+/* NOTE: This is an internal header file, included by other STL headers.
+ *   You should not attempt to use it directly.
+ */
+
+#ifndef __SGI_STL_INTERNAL_QUEUE_H
+#define __SGI_STL_INTERNAL_QUEUE_H
+
+__STL_BEGIN_NAMESPACE
+
+#ifndef __STL_LIMITED_DEFAULT_TEMPLATES
+template <class T, class Sequence = deque<T> >
+#else
+template <class T, class Sequence>
+#endif
+class queue {
+  friend bool operator== __STL_NULL_TMPL_ARGS (const queue& x, const queue& y);
+  friend bool operator< __STL_NULL_TMPL_ARGS (const queue& x, const queue& y);
+public:
+  typedef typename Sequence::value_type value_type;
+  typedef typename Sequence::size_type size_type;
+  typedef typename Sequence::reference reference;
+  typedef typename Sequence::const_reference const_reference;
+protected:
+  Sequence c;
+public:
+  bool empty() const { return c.empty(); }
+  size_type size() const { return c.size(); }
+  reference front() { return c.front(); }
+  const_reference front() const { return c.front(); }
+  reference back() { return c.back(); }
+  const_reference back() const { return c.back(); }
+  void push(const value_type& x) { c.push_back(x); }
+  void pop() { c.pop_front(); }
+};
+
+template <class T, class Sequence>
+bool operator==(const queue<T, Sequence>& x, const queue<T, Sequence>& y) {
+  return x.c == y.c;
+}
+
+template <class T, class Sequence>
+bool operator<(const queue<T, Sequence>& x, const queue<T, Sequence>& y) {
+  return x.c < y.c;
+}
+
+#ifndef __STL_LIMITED_DEFAULT_TEMPLATES
+template <class T, class Sequence = vector<T>, 
+          class Compare = less<typename Sequence::value_type> >
+#else
+template <class T, class Sequence, class Compare>
+#endif
+class  priority_queue {
+public:
+  typedef typename Sequence::value_type value_type;
+  typedef typename Sequence::size_type size_type;
+  typedef typename Sequence::reference reference;
+  typedef typename Sequence::const_reference const_reference;
+protected:
+  Sequence c;
+  Compare comp;
+public:
+  priority_queue() : c() {}
+  explicit priority_queue(const Compare& x) :  c(), comp(x) {}
+
+#ifdef __STL_MEMBER_TEMPLATES
+  template <class InputIterator>
+  priority_queue(InputIterator first, InputIterator last, const Compare& x)
+    : c(first, last), comp(x) { make_heap(c.begin(), c.end(), comp); }
+  template <class InputIterator>
+  priority_queue(InputIterator first, InputIterator last) 
+    : c(first, last) { make_heap(c.begin(), c.end(), comp); }
+#else /* __STL_MEMBER_TEMPLATES */
+  priority_queue(const value_type* first, const value_type* last, 
+                 const Compare& x) : c(first, last), comp(x) {
+    make_heap(c.begin(), c.end(), comp);
+  }
+  priority_queue(const value_type* first, const value_type* last) 
+    : c(first, last) { make_heap(c.begin(), c.end(), comp); }
+#endif /* __STL_MEMBER_TEMPLATES */
+
+  bool empty() const { return c.empty(); }
+  size_type size() const { return c.size(); }
+  const_reference top() const { return c.front(); }
+  void push(const value_type& x) {
+    __STL_TRY {
+      c.push_back(x); 
+      push_heap(c.begin(), c.end(), comp);
+    }
+    __STL_UNWIND(c.clear());
+  }
+  void pop() {
+    __STL_TRY {
+      pop_heap(c.begin(), c.end(), comp);
+      c.pop_back();
+    }
+    __STL_UNWIND(c.clear());
+  }
+};
+
+// no equality is provided
+
+__STL_END_NAMESPACE
+
+#endif /* __SGI_STL_INTERNAL_QUEUE_H */
+
+// Local Variables:
+// mode:C++
+// End: