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

cde/programs/dtinfo/DtMmdb/StyleSheet/ResolverStack.C

@@ -0,0 +1,65 @@
+// $XConsortium: ResolverStack.cc /main/3 1996/06/11 17:08:33 cde-hal $
+#include "ResolverStack.h"
+
+#include "Element.h"
+#include "Feature.h"
+
+
+// we have the responsibility of deleting these guys
+
+ResolverStackElement::ResolverStackElement(Element	*element,
+					   FeatureSet	*local,
+					   FeatureSet	*complete)
+: f_element(element),
+  f_localFeatureSet(local),
+  f_completeFeatureSet(complete)
+{
+}
+  
+
+ResolverStackElement::~ResolverStackElement()
+{
+  delete f_element;
+  delete f_localFeatureSet;
+  delete f_completeFeatureSet ;
+}
+
+// required by CC_TPtrDlist 
+int
+ResolverStackElement::operator==(const ResolverStackElement &stack_element)
+{
+  return
+    stack_element.f_element		== f_element &&
+    stack_element.f_localFeatureSet	== f_localFeatureSet &&
+    stack_element.f_completeFeatureSet	== f_completeFeatureSet ;
+}
+
+
+ResolverStack::ResolverStack()
+: CC_TPtrDlist<ResolverStackElement>()
+{
+}
+
+ResolverStack::~ResolverStack()
+{
+  // delete all remaining items in stack 
+  clearAndDestroy();
+}
+
+void
+ResolverStack::push(ResolverStackElement *item)
+{
+  prepend(item);
+}
+
+ResolverStackElement *
+ResolverStack::top()
+{
+  return first();
+}
+
+ResolverStackElement *
+ResolverStack::pop()
+{
+  return removeFirst();
+}