1 files changed, 105 insertions, 0 deletions
diff --git a/gnu/lib/libg++/g++-include/SLBag.ccP b/gnu/lib/libg++/g++-include/SLBag.ccP
new file mode 100644
index 000000000000..50d2447c7d29
--- /dev/null
+++ b/gnu/lib/libg++/g++-include/SLBag.ccP
@@ -0,0 +1,105 @@
+// 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 "<T>.SLBag.h"
+
+int <T>SLBag::OK()
+{
+  int v = p.OK();
+  v &= count == p.length();
+  if (!v) error("invariant failure");
+  return v;
+}
+
+Pix <T>SLBag::seek(<T&> item, Pix i)
+{
+  if (i == 0) i = first(); else next(i);
+  for (; i != 0 && (!(<T>EQ(p(i), item))); p.next(i));
+  return i;
+}
+
+int <T>SLBag::nof(<T&> item)
+{
+  int n = 0;
+  for (Pix p = first(); p; next(p)) if (<T>EQ((*this)(p), item)) ++n;
+  return n;
+}
+
+
+void <T>SLBag::del(<T&> item)
+{
+  Pix i = p.first();
+  if (i == 0) 
+    return;
+  else if (<T>EQ(p(i), item))
+  {
+    --count;
+    p.del_front();
+  }
+  else
+  {
+    Pix trail = i;
+    p.next(i);
+    while (i != 0)
+    {
+      if (<T>EQ(p(i), item))
+      {
+        --count;
+        p.del_after(trail);
+        return;
+      }
+      trail = i;
+      p.next(i);
+    }
+  }
+}    
+
+void <T>SLBag::remove(<T&> item)
+{
+  Pix i = p.first();
+  while (i != 0 && <T>EQ(p(i), item))
+  {
+    --count;
+    p.del_front();
+    i = p.first();
+  }
+  if (i != 0)
+  {
+    Pix trail = i;
+    p.next(i);
+    while (i != 0)
+    {
+      if (<T>EQ(p(i), item))
+      {
+        --count;
+        p.del_after(trail);
+        i = trail;
+        p.next(i);
+      }
+      else
+      {
+        trail = i;
+        p.next(i);
+      }
+    }
+  }
+}    
+