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

   1 /*
   2  * CDE - Common Desktop Environment
   3  *
   4  * Copyright (c) 1993-2012, The Open Group. All rights reserved.
   5  *
   6  * These libraries and programs are free software; you can
   7  * redistribute them and/or modify them under the terms of the GNU
   8  * Lesser General Public License as published by the Free Software
   9  * Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * These libraries and programs are distributed in the hope that
  13  * they will be useful, but WITHOUT ANY WARRANTY; without even the
  14  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE. See the GNU Lesser General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with these librararies and programs; if not, write
  20  * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  21  * Floor, Boston, MA 02110-1301 USA
  22  */
  23 // $XConsortium: ResolverStack.cc /main/3 1996/06/11 17:08:33 cde-hal $
  24 #include "ResolverStack.h"
  25
  26 #include "Element.h"
  27 #include "Feature.h"
  28
  29
  30 // we have the responsibility of deleting these guys
  31
  32 ResolverStackElement::ResolverStackElement(Element      *element,
  33                                            FeatureSet   *local,
  34                                            FeatureSet   *complete)
  35 : f_element(element),
  36   f_localFeatureSet(local),
  37   f_completeFeatureSet(complete)
  38 {
  39 }
  40
  41
  42 ResolverStackElement::~ResolverStackElement()
  43 {
  44   delete f_element;
  45   delete f_localFeatureSet;
  46   delete f_completeFeatureSet ;
  47 }
  48
  49 // required by CC_TPtrDlist
  50 int
  51 ResolverStackElement::operator==(const ResolverStackElement &stack_element)
  52 {
  53   return
  54     stack_element.f_element             == f_element &&
  55     stack_element.f_localFeatureSet     == f_localFeatureSet &&
  56     stack_element.f_completeFeatureSet  == f_completeFeatureSet ;
  57 }
  58
  59
  60 ResolverStack::ResolverStack()
  61 : CC_TPtrDlist<ResolverStackElement>()
  62 {
  63 }
  64
  65 ResolverStack::~ResolverStack()
  66 {
  67   // delete all remaining items in stack
  68   clearAndDestroy();
  69 }
  70
  71 void
  72 ResolverStack::push(ResolverStackElement *item)
  73 {
  74   prepend(item);
  75 }
  76
  77 ResolverStackElement *
  78 ResolverStack::top()
  79 {
  80   return first();
  81 }
  82
  83 ResolverStackElement *
  84 ResolverStack::pop()
  85 {
  86   return removeFirst();
  87 }