ent.hpp

См. документацию.

/*

Copyright (c) 2002-2005, Yauheni Akhotnikau
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

- Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.

- The name of the author may not be used to endorse or promote products derived
from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.

*/

#if !defined( _OESS_1__STDSN__ENT_HPP_ )
#define _OESS_1__STDSN__ENT_HPP_

#include <cpp_util_2/h/nocopy.hpp>

#include <oess_1/stdsn/h/declspec.hpp>

#include <oess_1/io/h/stream.hpp>

namespace oess_1 {

namespace stdsn {

class iextension_t;
class oextension_t;

class unknown_extension_t;

//
// ient_t
//

class OESS_1__STDSN__TYPE ient_t
: private cpp_util_2::nocopy_t
{
  public :
    virtual ~ient_t();

    virtual bool
    obj_start(
      const void * object,
      const std::string * type_name,
      const std::string & scheme ) = 0;

    virtual void
    obj_finish(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    obj_complete(
      const void * object,
      const std::string * type_name ) = 0;


    virtual void
    unpack_type_name(
      std::string & type_name ) = 0;

    virtual oess_1::io::istream_t &
    query_stream() = 0;

    virtual bool
    check_optional_attr_existence(
      const std::string & attr_name ) = 0;

    virtual iextension_t *
    extension_start() = 0;

    virtual void
    extension_finish(
      iextension_t & extension ) = 0;
};

//
// iextension_t
//

class OESS_1__STDSN__TYPE iextension_t
: public ient_t
{
  public :
    virtual ~iextension_t();

    virtual bool
    obj_start(
      const void * object,
      const std::string * type_name,
      const std::string & scheme ) = 0;

    virtual void
    obj_finish(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    obj_complete(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    unpack_type_name(
      std::string & type_name ) = 0;

    virtual oess_1::io::istream_t &
    query_stream() = 0;

    virtual bool
    check_optional_attr_existence(
      const std::string & attr_name ) = 0;

    virtual iextension_t *
    extension_start() = 0;

    virtual void
    extension_finish(
      iextension_t & extension ) = 0;

    virtual bool
    is_present() const = 0;

    virtual void
    unpack_opaque( unknown_extension_t & ext ) = 0;
};

//
// oent_t
//

class OESS_1__STDSN__TYPE oent_t
: private cpp_util_2::nocopy_t
{
  public :
    virtual ~oent_t();

    virtual bool
    obj_start(
      const void * object,
      const std::string * type_name,
      const std::string & scheme ) = 0;

    virtual void
    obj_finish(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    obj_complete(
      const void * object,
      const std::string * type_name ) = 0;


    virtual void
    pack_type_name(
      const std::string & type_name,
      const std::string & type_scheme ) = 0;

    virtual oess_1::io::ostream_t &
    query_stream() = 0;

    virtual bool
    set_optional_attr_existence(
      const std::string & attr_name,
      bool existence ) = 0;

    virtual oextension_t *
    extension_start() = 0;

    virtual void
    extension_finish(
      oextension_t & extension ) = 0;
};

//
// oextension_t
//

class OESS_1__STDSN__TYPE oextension_t
: public oent_t
{
  public :
    virtual ~oextension_t();

    virtual bool
    obj_start(
      const void * object,
      const std::string * type_name,
      const std::string & scheme ) = 0;

    virtual void
    obj_finish(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    obj_complete(
      const void * object,
      const std::string * type_name ) = 0;

    virtual void
    pack_type_name(
      const std::string & type_name,
      const std::string & type_scheme ) = 0;

    virtual oess_1::io::ostream_t &
    query_stream() = 0;

    virtual bool
    set_optional_attr_existence(
      const std::string & attr_name,
      bool existence ) = 0;

    virtual oextension_t *
    extension_start() = 0;

    virtual void
    extension_finish(
      oextension_t & extension ) = 0;

    virtual void
    pack( oess_1::io::ostream_t & to ) const = 0;

    virtual void
    pack_opaque( const unknown_extension_t & ext ) = 0;
};

//
// isubclass_extension_t
//

class OESS_1__STDSN__TYPE isubclass_extension_t
  {
    public :
      virtual ~isubclass_extension_t();

      virtual void
      operator()( ient_t & ) = 0;
  };

//
// osubclass_extension_t
//

class OESS_1__STDSN__TYPE osubclass_extension_t
  {
    public :
      virtual ~osubclass_extension_t();

      virtual void
      operator()( oent_t & ) = 0;
  };

//
// isubclass_extension_template_t
//

template< class T >
class isubclass_extension_template_t
: public isubclass_extension_t
  {
    public :
      typedef T object_t;
      typedef void (*unpack_self_t)(
        ient_t &, T &, isubclass_extension_t * );

      isubclass_extension_template_t(
        object_t & o,
        unpack_self_t unpack_self,
        isubclass_extension_t * subclass )
        : m_object( o )
        , m_unpack_self( unpack_self )
        , m_subclass( subclass )
        {}

      virtual void
      operator()( ient_t & from )
        {
          (*m_unpack_self)( from, m_object, m_subclass );
        }

    private :
      object_t &  m_object;
      unpack_self_t m_unpack_self;

      isubclass_extension_t * m_subclass;
  };

//
// osubclass_extension_template_t
//

template< class T >
class osubclass_extension_template_t
: public osubclass_extension_t
  {
    public :
      typedef T object_t;
      typedef void (*pack_self_t)(
        oent_t &, const T &, osubclass_extension_t * );

      osubclass_extension_template_t(
        const object_t & o,
        pack_self_t pack_self,
        osubclass_extension_t * subclass )
        : m_object( o )
        , m_pack_self( pack_self )
        , m_subclass( subclass )
        {}

      virtual void
      operator()( oent_t & from )
        {
          (*m_pack_self)( from, m_object, m_subclass );
        }

    private :
      const object_t &  m_object;
      pack_self_t m_pack_self;

      osubclass_extension_t * m_subclass;
  };


} /* namespace stdsn */

} /* namespace oess_1 */

#endif

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