SelectInstruction.hpp

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/******************************************************************************/
/* REXX Kernel                                          SelectInstruction.hpp */
/*                                                                            */
/* Primitive SELECT instruction Class Definitions                             */
/*                                                                            */
/******************************************************************************/
#ifndef Included_RexxInstructionSelect
#define Included_RexxInstructionSelect
 
#include "RexxInstruction.hpp"
 
class RexxInstructionOtherwise;
 
class RexxInstructionSelect : public RexxBlockInstruction
{
public:
    inline void *operator new(size_t size, void *ptr) {return ptr;}
    inline void  operator delete(void *) { }
    inline void  operator delete(void *, void *) { }
 
    RexxInstructionSelect(RexxString *);
    inline RexxInstructionSelect(RESTORETYPE restoreType) { ; };
    void live(size_t);
    void liveGeneral(int reason);
    void flatten(RexxEnvelope*);
    void execute(RexxActivation *, RexxExpressionStack *);
 
    void matchEnd(RexxInstructionEnd *, RexxSource *);
    bool isLabel(RexxString *name);
    RexxString *getLabel();
    bool isLoop();
    void terminate(RexxActivation *, RexxDoBlock *);
 
    void setOtherwise(RexxInstructionOtherwise *);
    void addWhen(RexxInstructionIf *);
 
protected:
    RexxQueue                *when_list; /* list of WHEN end targets          */
    RexxInstructionEnd       *end;       /* END matching the SELECT           */
    RexxInstructionOtherwise *otherwise; /* OTHERWISE matching the SELECT     */
    RexxString * label;      // the select label
};
#endif