1 files changed, 83 insertions, 0 deletions
diff --git a/gnu/lib/libg++/g++-include/VQueue.ccP b/gnu/lib/libg++/g++-include/VQueue.ccP
new file mode 100644
index 000000000000..1181b3f50d6a
--- /dev/null
+++ b/gnu/lib/libg++/g++-include/VQueue.ccP
@@ -0,0 +1,83 @@
+// This may look like C code, but it is really -*- C++ -*-
+/* 
+Copyright (C) 1988 Free Software Foundation
+    written by Doug Lea (dl@rocky.oswego.edu)
+
+This file is part of the GNU C++ Library.  This library is free
+software; you can redistribute it and/or modify it under the terms of
+the GNU Library General Public License as published by the Free
+Software Foundation; either version 2 of the License, or (at your
+option) any later version.  This library is distributed in the hope
+that it will be useful, but WITHOUT ANY WARRANTY; without even the
+implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE.  See the GNU Library General Public License for more details.
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifdef __GNUG__
+#pragma implementation
+#endif
+#include <stream.h>
+#include "<T>.VQueue.h"
+
+<T>VQueue::<T>VQueue(<T>VQueue& b)
+:size(b.size), cnt(b.cnt), inp(b.inp), outp(b.outp), s(new <T> [b.size])
+{
+  int j = outp;
+  for (int i = 0; i < cnt; ++i)
+  {
+    s[j] = b.s[j];
+    if (++j == size) j = 0;
+  }
+}
+
+void <T>VQueue::operator = (<T>VQueue& b)
+{
+  if (&b == this) return;
+  if (size != b.size)
+  {
+    delete [] s;
+    s = new <T> [b.size];
+    size = b.size;
+  }
+  inp = b.inp; outp = b.outp; cnt = b.cnt;
+  int j = outp;
+  for (int i = 0; i < cnt; ++i)
+  {
+    s[j] = b.s[j];
+    if (++j == size) j = 0;
+  }
+}
+
+
+void <T>VQueue::resize(int newsz)
+{
+  if (newsz < cnt)
+    error("resize: new size too small");
+  <T>* news = new <T> [newsz];
+  int j = outp;
+  for (int i = 0; i < cnt; ++i)
+  {
+    news[i] = s[j];
+    if (++j == size) j = 0;
+  }
+  inp = j;
+  outp = 0;
+  delete [] s;
+  s = news;
+  size = newsz;
+}
+
+int <T>VQueue::OK()
+{
+  int v = s != 0;               // have space
+  v &= size >= 0;               // a legal size
+  v &= inp >= 0 && inp <= size; // pointers with bounds  
+  v &= outp >= 0 && outp <= size;
+  int c = (size + inp - outp) % size;
+  v &= cnt == size || cnt == c; // correct count
+  if (!v) error("invariant failure");
+  return v;
+}