cde/programs/nsgmls/ContentState.h

   1 /* $XConsortium: ContentState.h /main/1 1996/07/29 16:48:27 cde-hp $ */
   2 // Copyright (c) 1994, 1996 James Clark
   3 // See the file COPYING for copying permission.
   4
   5 #ifndef ContentState_INCLUDED
   6 #define ContentState_INCLUDED 1
   7
   8 #ifdef __GNUG__
   9 #pragma interface
  10 #endif
  11
  12 #include <stddef.h>
  13 #include "OpenElement.h"
  14 #include "IList.h"
  15 #include "Vector.h"
  16 #include "Message.h"
  17 #include "Dtd.h"
  18 #include "Mode.h"
  19 #include "Boolean.h"
  20
  21 #ifdef SP_NAMESPACE
  22 namespace SP_NAMESPACE {
  23 #endif
  24
  25 class SP_API ContentState {
  26 public:
  27   ContentState();
  28   void startContent(const Dtd &);
  29   void pushElement(OpenElement *);
  30   OpenElement *popSaveElement();
  31   void popElement();
  32   OpenElement &currentElement();
  33   const OpenElement &currentElement() const;
  34   void getOpenElementInfo(Vector<OpenElementInfo> &,
  35                           const StringC &rniPcdata) const;
  36   unsigned tagLevel() const;
  37   Boolean elementIsIncluded(const ElementType *) const;
  38   Boolean elementIsExcluded(const ElementType *) const;
  39   Boolean elementIsOpen(const ElementType *) const;
  40   Boolean afterDocumentElement() const;
  41   const ElementType *lastEndedElementType() const;
  42   Mode contentMode() const;
  43   const ElementType *lookupCreateUndefinedElement(const StringC &,
  44                                                   const Location &);
  45   Boolean checkImplyLoop(unsigned);
  46   static const ShortReferenceMap theEmptyMap;
  47 private:
  48   IList<OpenElement> openElements_;
  49   Vector<unsigned> openElementCount_;
  50   Vector<unsigned> includeCount_;
  51   Vector<unsigned> excludeCount_;
  52   unsigned totalExcludeCount_;
  53   unsigned tagLevel_;
  54   unsigned netEnablingCount_;
  55   const ElementType *lastEndedElementType_;
  56   NamedTable<ElementType> undefinedElementTypeTable_;
  57   ElementType documentElementContainer_;
  58 };
  59
  60 inline
  61 OpenElement &ContentState::currentElement()
  62 {
  63   return *openElements_.head();
  64 }
  65
  66 inline
  67 const OpenElement &ContentState::currentElement() const
  68 {
  69   return *openElements_.head();
  70 }
  71
  72 inline
  73 Boolean ContentState::elementIsOpen(const ElementType *e) const
  74 {
  75   return openElementCount_[e->index()] != 0;
  76 }
  77
  78 inline
  79 Boolean ContentState::elementIsIncluded(const ElementType *e) const
  80 {
  81   return includeCount_[e->index()] != 0 && excludeCount_[e->index()] == 0;
  82 }
  83
  84 inline
  85 Boolean ContentState::elementIsExcluded(const ElementType *e) const
  86 {
  87   return excludeCount_[e->index()] != 0;
  88 }
  89
  90 inline
  91 const ElementType *ContentState::lastEndedElementType() const
  92 {
  93   return lastEndedElementType_;
  94 }
  95
  96 inline
  97 unsigned ContentState::tagLevel() const
  98 {
  99   return tagLevel_;
 100 }
 101
 102 inline
 103 Boolean ContentState::afterDocumentElement() const
 104 {
 105   return tagLevel() == 0 && currentElement().isFinished();
 106 }
 107
 108 inline
 109 Mode ContentState::contentMode() const
 110 {
 111   return openElements_.head()->mode(netEnablingCount_ > 0);
 112 }
 113
 114 #ifdef SP_NAMESPACE
 115 }
 116 #endif
 117
 118 #endif /* not ContentState_INCLUDED */