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// This may look like C, but it's really -*- C++ -*-
//=============================================================================
/**
* @file Argument.h
*
* $Id$
*
* @authors Jeff Parsons and Carlos O'Ryan
*/
//=============================================================================
#ifndef TAO_ARGUMENT_H
#define TAO_ARGUMENT_H
#include /**/ "ace/pre.h"
#include "tao/Basic_Types.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/orbconf.h"
#include "tao/TAO_Export.h"
#include "tao/ParameterModeC.h"
namespace CORBA
{
class Any;
}
class TAO_OutputCDR;
class TAO_InputCDR;
namespace TAO
{
/**
* @class Argument
*
* @brief Base class for argument class templates.
*
* @c Argument subclasses override the virtual methods
* appropriately. For example, a stub "IN" argument class
* template would override the @c marshal() method, but wouldn't
* need to override the @c demarshal() method.
*/
class TAO_Export Argument
{
public:
/// Destructor.
virtual ~Argument (void);
/// Marshal the argument into the given CDR output stream.
/**
* @note The default implementation simply returns @c true.
*/
virtual CORBA::Boolean marshal (TAO_OutputCDR &cdr);
/// Demarshal the argument from the given CDR input stream.
/**
* @note The default implementation simply returns @c true.
*/
virtual CORBA::Boolean demarshal (TAO_InputCDR &);
#if TAO_HAS_INTERCEPTORS == 1
/**
* @name Portable Interceptor Related Methods
*
* These methods are only used when setting up
* @c PortableInterceptor::RequestInfo instances with the
* appropriate operation-specific parameter list and return
* value, if either or both exist.
*/
//@{
/// Populate the given @a CORBA::Any result argument.
/**
* @note The default implementation is a no-op.
*/
virtual void interceptor_value (CORBA::Any *) const;
/// Get the parameter mode of this argument
virtual CORBA::ParameterMode mode (void) const = 0;
//@}
#endif /* TAO_HAS_INTERCEPTORS == 1 */
};
class TAO_Export InArgument : public Argument
{
public:
#if TAO_HAS_INTERCEPTORS == 1
virtual CORBA::ParameterMode mode (void) const;
#endif
};
class TAO_Export InoutArgument : public Argument
{
public:
#if TAO_HAS_INTERCEPTORS == 1
virtual CORBA::ParameterMode mode (void) const;
#endif
};
class TAO_Export OutArgument : public Argument
{
public:
#if TAO_HAS_INTERCEPTORS == 1
virtual CORBA::ParameterMode mode (void) const;
#endif
};
class TAO_Export RetArgument : public Argument
{
public:
#if TAO_HAS_INTERCEPTORS == 1
virtual CORBA::ParameterMode mode (void) const;
#endif
};
}
#include /**/ "ace/post.h"
#endif /* TAO_ARGUMENT_H */
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