SayInstruction.cpp

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/******************************************************************************/
/* REXX Translator                                                            */
/*                                                                            */
/* Primitive Say Parse Class                                                  */
/*                                                                            */
/******************************************************************************/
#include <stdlib.h>
#include "RexxCore.h"
#include "StringClass.hpp"
#include "RexxActivity.hpp"
#include "RexxActivation.hpp"
#include "SayInstruction.hpp"
 
RexxInstructionSay::RexxInstructionSay(
    RexxObject *_expression)            /* assciated expression              */
/******************************************************************************/
/* Function:  Complete initialization of a SAY instruction                    */
/******************************************************************************/
{
   OrefSet(this, this->expression, _expression);
}
 
void  RexxInstructionSay::execute(
    RexxActivation      *context,      /* current activation context        */
    RexxExpressionStack *stack)        /* evaluation stack                  */
/******************************************************************************/
/* Function:  Execute a REXX SAY instruction                                  */
/******************************************************************************/
{
    RexxString *value;                   /* string version of output value    */
    ProtectedObject p_value;
 
    context->traceInstruction(this);     /* trace if necessary                */
    if (this->expression != OREF_NULL) /* have an expression value?         */
    {
        /* get the expression value          */
        RexxObject *result = this->expression->evaluate(context, stack);
        value = REQUEST_STRING(result);    /* get the string version            */
        p_value = value;
    }
    else
    {
        /* use a NULL string                 */
        value = OREF_NULLSTRING;
    }
    context->traceResult(value);         /* trace the output value            */
                                         /* write out the line                */
    context->getActivity()->sayOutput(context, value);
    context->pauseInstruction();         /* do debug pause if necessary       */
}