LeaveInstruction.cpp

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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Translator                                                            */
/*                                                                            */
/* Primitive Leave Parse Class                                                */
/*                                                                            */
/******************************************************************************/
#include <stdlib.h>
#include "RexxCore.h"
#include "StringClass.hpp"
#include "RexxActivation.hpp"
#include "LeaveInstruction.hpp"
#include "Token.hpp"
 
RexxInstructionLeave::RexxInstructionLeave(
    int         type,                  /* LEAVE or ITERATE instruction      */
    RexxString *_name)                  /* associated name                   */
/******************************************************************************/
/* Function : Complete LEAVE/ITERATE instruction initialization               */
/******************************************************************************/
{
  OrefSet(this, this->name, _name);     /* store the name                    */
  this->setType(type);                 /* and set the correct type          */
}
 
void RexxInstructionLeave::live(size_t liveMark)
/******************************************************************************/
/* Function:  Normal garbage collection live marking                          */
/******************************************************************************/
{
  memory_mark(this->nextInstruction);  /* must be first one marked          */
  memory_mark(this->name);
}
 
void RexxInstructionLeave::liveGeneral(int reason)
/******************************************************************************/
/* Function:  Generalized object marking                                      */
/******************************************************************************/
{
                                       /* must be first one marked          */
  memory_mark_general(this->nextInstruction);
  memory_mark_general(this->name);
}
 
void RexxInstructionLeave::flatten (RexxEnvelope *envelope)
/******************************************************************************/
/* Function:  Flatten an object                                               */
/******************************************************************************/
{
  setUpFlatten(RexxInstructionLeave)
 
  flatten_reference(newThis->nextInstruction, envelope);
  flatten_reference(newThis->name, envelope);
 
  cleanUpFlatten
}
 
void RexxInstructionLeave::execute(
    RexxActivation      *context,      /* current activation context        */
    RexxExpressionStack *stack )       /* evaluation stack                  */
/****************************************************************************/
/* Function:  Execute a REXX LEAVE instruction                              */
/****************************************************************************/
{
    context->traceInstruction(this);     /* trace if necessary                */
                                         /* is it a LEAVE?                    */
    if (this->instructionType == KEYWORD_LEAVE)
    {
        /* tell the activation to exit the   */
        context->leaveLoop(this->name);    /* appopriate loop                   */
    }
    else
    {
        /* tell the activation to iterate    */
        context->iterate(this->name);      /* the appopriate loop               */
    }
    context->pauseInstruction();         /* do debug pause if necessary       */
}