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// This may look like C, but it's really -*- C++ -*-

//=============================================================================
/**
 *  @file    Object_Argument_T.h
 *
 *  $Id$
 *
 *  @authors Jeff Parsons and Carlos O'Ryan
 */
//=============================================================================


#ifndef TAO_OBJECT_ARGUMENT_T_H
#define TAO_OBJECT_ARGUMENT_T_H

#include /**/ "ace/pre.h"
#include "tao/Argument.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

// This set of classes is also used by valuetype arguments. If the
// specialization is done using S * for the parameter, the semantics
// are the same as for interfaces, so there's no need for another
// set of classes.

namespace TAO
{
  /**
   * @class In_Object_Argument_T
   *
   * @brief Template class for IN object argument.
   *
   */
  template<typename S_ptr>
  class In_Object_Argument_T : public Argument
  {
  public:
    In_Object_Argument_T (S_ptr x);

    virtual CORBA::Boolean marshal (TAO_OutputCDR &);
#if TAO_HAS_INTERCEPTORS == 1
    virtual void interceptor_param (Dynamic::Parameter &);
#endif /* TAO_HAS_INTERCEPTORS == 1 */
    S_ptr arg (void) const;

  private:
    S_ptr x_;
  };

  /**
   * @class Inout_Object_Argument_T
   *
   * @brief Template class for INOUT object argument.
   *
   */
  template<typename S_ptr, typename S_traits>
  class Inout_Object_Argument_T : public Argument
  {
  public:
    Inout_Object_Argument_T (S_ptr & x);

    virtual CORBA::Boolean marshal (TAO_OutputCDR &);
    virtual CORBA::Boolean demarshal (TAO_InputCDR &);
#if TAO_HAS_INTERCEPTORS == 1
    virtual void interceptor_param (Dynamic::Parameter &);
#endif /* TAO_HAS_INTERCEPTORS == 1 */
    S_ptr & arg (void);

  private:
    mutable S_ptr & x_;
  };

  /**
   * @class Out_Object_Argument_T
   *
   * @brief Template class for INOUT object argument.
   *
   */
  template<typename S_ptr, typename S_out>
  class Out_Object_Argument_T : public Argument
  {
  public:
    Out_Object_Argument_T (S_out & x);

    virtual CORBA::Boolean demarshal (TAO_InputCDR &);
#if TAO_HAS_INTERCEPTORS == 1
    virtual void interceptor_param (Dynamic::Parameter &);
#endif /* TAO_HAS_INTERCEPTORS == 1 */
    S_out arg (void);

  private:
    mutable S_ptr & x_;
  };

  /**
   * @class Ret_Object_Argument_T
   *
   * @brief Template class for return stub value of object argument.
   *
   */
  template<typename S_ptr, typename S_var>
  class Ret_Object_Argument_T : public Argument
  {
  public:
    Ret_Object_Argument_T (void);

    virtual CORBA::Boolean demarshal (TAO_InputCDR &);
#if TAO_HAS_INTERCEPTORS == 1
    virtual void interceptor_result (CORBA::Any *);
#endif /* TAO_HAS_INTERCEPTORS == 1 */
    S_ptr & arg (void);

    S_ptr excp (void);
    S_ptr retn (void);

  private:
    S_var x_;
  };

  /**
   * @struct Object_Tag
   *
   * @brief Struct for object arguments id tag.
   *
   */
  struct TAO_Export Object_Tag {};

  /**
   * @struct Basic_Arg_Traits_T
   *
   * @brief Template class for stub argument traits of objects.
   *
   */

  template<typename T_ptr, typename T_var, typename T_out, typename T_traits>
  struct Object_Arg_Traits_T
  {
    typedef T_ptr                                         ret_type;
    typedef T_ptr                                         in_type;
    typedef T_ptr &                                       inout_type;
    typedef T_out                                         out_type;

    typedef In_Object_Argument_T<T_ptr>                   in_arg_val;
    typedef Inout_Object_Argument_T<T_ptr, T_traits>      inout_arg_val;
    typedef Out_Object_Argument_T<T_ptr,T_out>            out_arg_val;
    typedef Ret_Object_Argument_T<T_ptr,T_var>            ret_val;

    typedef Object_Tag                                    idl_tag;
  };
}

#if defined (__ACE_INLINE__)
#include "tao/Object_Argument_T.inl"
#endif /* __ACE_INLINE__ */

#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "tao/Object_Argument_T.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */

#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Object_Argument_T.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */

#include /**/ "ace/post.h"

#endif /* TAO_OBJECT_ARGUMENT_T_H */