ExpressionStem.hpp

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/******************************************************************************/
/* REXX Kernel                                           ExpressionStem.hpp   */
/*                                                                            */
/* Primitive Expression Stem Class Definitions                                */
/*                                                                            */
/******************************************************************************/
#ifndef Included_RexxStemVariable
#define Included_RexxStemVariable
 
#include "ExpressionBaseVariable.hpp"
 
class RexxStemVariable : public RexxVariableBase {
 public:
  void *operator new(size_t);
  inline void *operator new(size_t size, void *ptr) {return ptr;};
  inline void  operator delete(void *) { ; }
  inline void  operator delete(void *, void *) { ; }
 
  inline RexxStemVariable(RESTORETYPE restoreType) { ; };
  RexxStemVariable(RexxString *, size_t);
  void live(size_t);
  void liveGeneral(int reason);
  void flatten(RexxEnvelope *);
  RexxObject *evaluate(RexxActivation *, RexxExpressionStack *);
  RexxObject *getValue(RexxVariableDictionary *);
  RexxObject *getValue(RexxActivation *);
  RexxObject *getRealValue(RexxVariableDictionary *);
  RexxObject *getRealValue(RexxActivation *);
  bool exists(RexxActivation *);
  void set(RexxActivation *, RexxObject *) ;
  void set(RexxVariableDictionary *, RexxObject *) ;
  void assign(RexxActivation *, RexxExpressionStack *, RexxObject *);
  void drop(RexxActivation *);
  void drop(RexxVariableDictionary *);
  void setGuard(RexxActivation *);
  void clearGuard(RexxActivation *);
  void expose(RexxActivation *, RexxExpressionStack *, RexxVariableDictionary *);
  void procedureExpose(RexxActivation *, RexxActivation *, RexxExpressionStack *);
  bool sort(RexxActivation *context, RexxString *prefix, int order, int type, size_t start, size_t end, size_t firstcol, size_t lastcol);
  inline size_t getIndex() {return this->index;};
  void upper(RexxActivation *);
  RexxString *getName() {return stem;}
 
  RexxString  *stem;                   // the stem variable name
  size_t      index;                   /* lookaside table index             */
};
#endif