ProcedureInstruction.cpp

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/*----------------------------------------------------------------------------*/
/*                                                                            */
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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Translator                                                            */
/*                                                                            */
/* Primitive Procedure Parse Class                                            */
/*                                                                            */
/******************************************************************************/
#include <stdlib.h>
#include "RexxCore.h"
#include "QueueClass.hpp"
#include "RexxActivation.hpp"
#include "ProcedureInstruction.hpp"
#include "ExpressionBaseVariable.hpp"
 
RexxInstructionProcedure::RexxInstructionProcedure(
    size_t     varCount,               /* number of variables               */
    RexxQueue *variable_list)          /* supplied variable list            */
/******************************************************************************/
/* Function:  Complete initialization of a PROCEDURE instruction object       */
/******************************************************************************/
{
    /* get the variable size             */
    variableCount = varCount;
    while (varCount > 0)            /* loop through the variable list    */
    {
        /* copying each variable             */
        OrefSet(this, this->variables[--varCount], (RexxVariableBase *)variable_list->pop());
    }
}
 
void RexxInstructionProcedure::live(size_t liveMark)
/******************************************************************************/
/* Function:  Normal garbage collection live marking                          */
/******************************************************************************/
{
    size_t i;                            /* loop counter                      */
    size_t count;                        /* argument count                    */
 
    memory_mark(this->nextInstruction);  /* must be first one marked          */
    for (i = 0, count = variableCount; i < count; i++)
    {
        memory_mark(this->variables[i]);
    }
}
 
 
void RexxInstructionProcedure::liveGeneral(int reason)
/******************************************************************************/
/* Function:  Generalized object marking                                      */
/******************************************************************************/
{
    size_t i;                            /* loop counter                      */
    size_t count;                        /* argument count                    */
 
                                         /* must be first one marked          */
    memory_mark_general(this->nextInstruction);
    for (i = 0, count = variableCount; i < count; i++)
    {
        memory_mark_general(this->variables[i]);
    }
}
 
void RexxInstructionProcedure::flatten(RexxEnvelope *envelope)
/******************************************************************************/
/* Function:  Flatten an object                                               */
/******************************************************************************/
{
    size_t i;                            /* loop counter                      */
    size_t count;                        /* argument count                    */
 
    setUpFlatten(RexxInstructionProcedure)
 
    flatten_reference(newThis->nextInstruction, envelope);
    for (i = 0, count = variableCount; i < count; i++)
    {
        flatten_reference(newThis->variables[i], envelope);
    }
 
    cleanUpFlatten
}
 
void RexxInstructionProcedure::execute(
    RexxActivation      *context,      /* current activation context        */
    RexxExpressionStack *stack)        /* evaluation stack                  */
/******************************************************************************/
/* Function:  Execute a REXX PROCEDURE instruction                            */
/******************************************************************************/
{
  context->traceInstruction(this);     /* trace if necessary                */
  /* have the context expose these */
  context->procedureExpose(variables, variableCount);
  context->pauseInstruction();         /* do debug pause if necessary       */
}