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// -*- C++ -*-
//=============================================================================
/**
* @file Union_TypeCode.h
*
* $Id$
*
* Header file for a @c tk_union CORBA::TypeCode.
*
* @author Ossama Othman
*/
//=============================================================================
#ifndef TAO_UNION_TYPECODE_H
#define TAO_UNION_TYPECODE_H
#include /**/ "ace/pre.h"
#include "tao/TypeCode.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/TypeCode_Base_Attributes.h"
namespace TAO
{
namespace TypeCode
{
/**
* @class Union
*
* @brief @c CORBA::TypeCode implementation for an OMG IDL
* @c union.
*
* This class implements a @c CORBA::TypeCode for an OMG IDL
* @c union.
*/
template <typename StringType, class CaseArrayType, class RefCountPolicy>
class Union
: public CORBA::TypeCode,
private RefCountPolicy
{
public:
typedef TAO::TypeCode::Case_Base<StringType> Case;
/// Constructor.
Union (char const * id,
char const * name,
CORBA::TypeCode_ptr * discriminant_type,
Case const * cases,
CORBA::ULong ncases,
CORBA::Long default_index,
char const * default_member_name,
CORBA::TypeCode_ptr * default_member_type);
/**
* @name TAO-specific @c CORBA::TypeCode Methods
*
* Methods required by TAO's implementation of the
* @c CORBA::TypeCode class.
*
* @see @c CORBA::TypeCode
*/
//@{
virtual bool tao_marshal (TAO_OutputCDR & cdr) const;
virtual void tao_duplicate (void);
virtual void tao_release (void);
//@}
protected:
/**
* @name @c TAO CORBA::TypeCode Template Methods
*
* @c tk_union @c CORBA::TypeCode -specific template methods.
*
* @see @c CORBA::TypeCode
*/
//@{
virtual CORBA::Boolean equal_i (CORBA::TypeCode_ptr tc
ACE_ENV_ARG_DECL) const;
virtual CORBA::Boolean equivalent_i (CORBA::TypeCode_ptr tc
ACE_ENV_ARG_DECL) const;
virtual CORBA::TCKind kind_i (ACE_ENV_SINGLE_ARG_DECL) const;
virtual CORBA::TypeCode_ptr get_compact_typecode_i (
ACE_ENV_SINGLE_ARG_DECL) const;
virtual char const * id_i (ACE_ENV_SINGLE_ARG_DECL) const;
virtual char const * name_i (ACE_ENV_SINGLE_ARG_DECL) const;
virtual CORBA::ULong member_count_i (ACE_ENV_SINGLE_ARG_DECL) const;
virtual char const * member_name_i (CORBA::ULong index
ACE_ENV_ARG_DECL) const;
virtual CORBA::TypeCode_ptr member_type_i (CORBA::ULong index
ACE_ENV_ARG_DECL) const;
virtual CORBA::Any * member_label_i (ULong index
ACE_ENV_ARG_DECL) const;
virtual CORBA::TypeCode_ptr discriminator_type_i (
ACE_ENV_SINGLE_ARG_DECL) const;
virtual CORBA::Long default_index_i (ACE_ENV_SINGLE_ARG_DECL) const;
//@}
private:
/// Get pointer to the underlying @c Case array.
Case const * cases (void) const;
/// Return the number of cases in the IDL @c union, including
/// the @c default case.
CORBA::ULong case_count (void) const;
/// Return @c union case corresponding to given member (not
/// @c Case array) index.
/**
* @param index The zero-based index of the @c union member,
* including the @c default case. For example, if
* the @c default case is the second @union
* case/member, the @a index would be @c 1.
*
* @return Reference to @c union case/member corresponding to
* the given member zero-based @a index value.
*
* @note This method handles the @c default case. Do not
* attempt to perform special handling for the @c default
* case by shifting the index value by one, for example.
*/
Case const & case (CORBA::ULong index) const;
private:
/**
* @c Union Attributes
*
* Attributes representing the structure of an OMG IDL
* @c union.
*
* @note These attributes are declared in the order in which
* they are marshaled into a CDR stream in order to
* increase cache hits by improving spatial locality.
*/
//@{
/// Base attributes containing repository ID and name of
/// union type.
Base_Attributes<StringType> const base_attributes_;
/// Type of IDL @c union discriminant.
CORBA::TypeCode_ptr * const discriminant_type_;
/// The number of cases in the OMG IDL union, excluding the
/// @c default case.
CORBA::ULong const ncases_;
/// Array of @c TAO::TypeCode::Case representing structure of
/// the OMG IDL defined @c union.
CaseArrayType const cases_;
/// IDL @c union @c default case.
/**
* @note Only valid if @c this->default_index_ @c >= @c 0.
*/
Default_Case<StringType> const default_case_;
//@}
};
} // End namespace TypeCode
} // End namespace TAO
#ifdef __ACE_INLINE__
# include "tao/Union_TypeCode.inl"
#endif /* __ACE_INLINE__ */
#ifdef ACE_TEMPLATES_REQUIRE_SOURCE
# include "tao/Union_TypeCode.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#ifdef ACE_TEMPLATES_REQUIRE_PRAGMA
# pragma implementation ("Union_TypeCode.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#include /**/ "ace/post.h"
#endif /* TAO_UNION_TYPECODE_H */
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