Edge.h

   1 // CEdge class
   2 // Copyright © 2009 The University of Chicago
   3 #ifndef EDGE_H
   4 #define EDGE_H
   5
   6 #include <q3canvas.h>
   7 #include <qrect.h>
   8 #include <Q3PtrList>
   9
  10 #include "Parse.h"
  11
  12 class CGrammarRule;
  13
  14 class CEdge : public CParse
  15 {
  16         int             m_Start;
  17         int             m_End;
  18         int             m_DotLocation;// the number of the Parse piece to the right of the dot.
  19         double          m_X, m_Y; // coordinates for display;
  20         bool            m_InFinalParse;
  21         int             m_MinimumLength;
  22         int             m_Depth;
  23         Q3PtrList<Q3CanvasItem>     m_CanvasItems;
  24
  25 public:
  26
  27         CEdge*          m_Parent;
  28         Q3PtrList<CEdge> m_Daughters;
  29
  30 public:
  31
  32         CEdge();
  33         CEdge( CEdge& );
  34         CEdge( CGrammarRule*, CParse*, int DotLocation );
  35         CEdge( CParse& Cat, QString Word, int i, int End ); // for Scanner
  36
  37
  38         int             GetDotLocation();
  39         void            SetDotLocation(int n);
  40         void            SetEnd (int n ) { m_End = n; }
  41         virtual ~CEdge();
  42
  43
  44         QString             LHS();
  45         CStringSurrogate    GetLHS();
  46         void                SetLHS( QString );
  47         QString             RHS();
  48
  49         int                 GetStart();
  50         int                 GetEnd();
  51         CStringSurrogate    GetNextNode(); // the one to the right of the dot, which is m_DotLocation + 1;
  52         void                SetStart(int n );
  53         void                GetParse( CParse*, bool clearParse = TRUE );
  54         int                 getDepth() const { return m_Depth; }
  55         void                setDepth( int d ) { m_Depth = d; }
  56         bool                Complete();
  57         bool                Incomplete();
  58         void                MoveDotToTheRight();
  59         bool                NextNodeIsNonterminal();
  60         bool                NextNodeIsTerminal();
  61
  62         QString             Display();
  63         QString             DisplayParse( QMap<QString, QString>* filter = NULL );
  64         QRect               drawTree( Q3Canvas*, int, int, QMap<QString, QString>* filter = NULL );
  65         void                shiftTree( Q3Canvas*, int, int );
  66         int                 getMinimumLength() { return m_MinimumLength; }
  67         void                setMinimumLength( int, QMap<QString,int>* = NULL );
  68 };
  69
  70 #endif // EDGE_H