Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/dti_cc/CC_Stack.C

@@ -0,0 +1,54 @@
+// $XConsortium: CC_Stack.C /main/4 1996/10/08 19:22:53 cde-hal $
+#include "CC_Stack.h"
+
+//------------------------------------------------------------------------
+template <class T> Stack<T>::Stack ()
+{
+  Items = new CC_TValSlist<T>();
+}
+
+//-------------------------------------------------------------------------
+template <class T> Stack<T>::~Stack ()
+{
+  delete Items;
+}
+
+//-------------------------------------------------------------------------
+template <class T>
+void
+Stack<T>::push (const T newItem) 
+{
+  Items->append ( newItem );
+}
+
+//---------------------------------------------------------------------------
+template <class T>
+T 
+Stack<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);
+}
+
+//---------------------------------------------------------------------------
+template <class T>
+T& 
+Stack<T>::top () const
+{
+  CC_Link<T> *last_elem = (CC_Link<T> *)Items->last();
+  if ( !last_elem ) {
+    throw(Exception());
+  }
+
+  return ( *last_elem->f_element );
+}