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/******************************************************************************/
/* REXX Translator                                                            */
/*                                                                            */
/* Primitive Command Parse Class                                              */
/*                                                                            */
/******************************************************************************/
#include "RexxCore.h"
#include "RexxActivation.hpp"
#include "CommandInstruction.hpp"
#include "MethodArguments.hpp"


/**
 * Constructor for a command instruction.
 *
 * @param _expression
 *               The required expression for this command.
 */
RexxInstructionCommand::RexxInstructionCommand(RexxInternalObject *_expression)
{

    expression = _expression;
}


/**
 * Execute a command instruction.
 *
 * @param context The current program activation context.
 * @param stack   The current expression stack.
 */
void RexxInstructionCommand::execute(RexxActivation *context, ExpressionStack *stack )
{
    context->traceCommand(this);

    // NOTE:  Because commands have special tracing requirements, we don't use
    // the superclass methods for evaluating this expression.

    // get the expression result and convert to a string value
    RexxObject *result = expression->evaluate(context, stack);
    RexxString *command = result->requestString();
    // protect this
    stack->push(command);
    // are we tracing commands?
    if (context->tracingCommands())
    {
        // trace the full command result
        context->traceResultValue(command);
    }

    // finally, execute this command in the current address environment
    context->command(context->getAddress(), command, OREF_NULL);
}