DtMmdb: move to lib directory as a standalone library.

cde/lib/DtMmdb/dti_cc/CC_Stack.h

@@ -0,0 +1,92 @@
+/*
+ * CDE - Common Desktop Environment
+ *
+ * Copyright (c) 1993-2012, The Open Group. All rights reserved.
+ *
+ * These libraries and programs are free software; you can
+ * redistribute them and/or modify them under the terms of the GNU
+ * Lesser General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * These libraries and programs are distributed in the hope that
+ * they will be useful, but WITHOUT ANY WARRANTY; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU Lesser General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with these libraries and programs; if not, write
+ * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
+ * Floor, Boston, MA 02110-1301 USA
+ */
+/* $XConsortium: CC_Stack.h /main/4 1996/10/08 19:23:19 cde-hal $ */
+#ifndef _Stack_hh
+#define _Stack_hh
+
+#include "dti_excs/Exceptions.hh"
+#include "CC_Slist.h"
+
+template <class T> class Stack: public Destructable
+{
+
+public:
+  /* This is a value stack, ie an assignment operator for T is assumed */
+  Stack ()
+  {
+    Items = new CC_TValSlist<T>();
+  }
+  
+  ~Stack ()
+  {
+    delete Items;
+  }
+
+public:
+  T	pop ()
+  {
+    CC_Link<T> *last_elem = (CC_Link<T> *)Items->removeLast();
+
+    if ( !last_elem ) {
+      throw (Exception());
+    }
+
+    T *ret = last_elem->f_element;
+    delete last_elem;
+
+    T ret_value = *ret;
+    delete ret;
+
+    return(ret_value);
+  }
+
+  void	push (const T newItem)
+  {
+    Items->append ( newItem );
+  }
+
+  T&	top () const
+  {
+    CC_Link<T> *last_elem = (CC_Link<T> *)Items->last();
+    if ( !last_elem ) {
+      throw(Exception());
+    }
+
+    return ( *last_elem->f_element );
+  }
+
+  int   entries() const
+  { 
+    return( Items->entries() );  //ie no. of elements in the stack
+  }
+
+  int     empty() const {
+    return( Items->entries() == 0 );
+  }
+
+private:
+  CC_TValSlist<T> *Items;
+
+};
+
+#endif