
//=============================================================================
/**
 *  @file    any_op_cs.cpp
 *
 *  $Id: any_op_cs.cpp 88829 2010-02-04 09:21:38Z johnnyw $
 *
 *  Visitor generating code for Any operator for the Sequence node
 *
 *
 *  @author Aniruddha Gokhale
 */
//=============================================================================


// ***************************************************************************
// Sequence visitor for generating Any operator declarations in the client
// stubs file
// ***************************************************************************

be_visitor_sequence_any_op_cs::be_visitor_sequence_any_op_cs (
    be_visitor_context *ctx
  )
  : be_visitor_decl (ctx)
{
}

be_visitor_sequence_any_op_cs::~be_visitor_sequence_any_op_cs (void)
{
}

int
be_visitor_sequence_any_op_cs::visit_sequence (be_sequence *node)
{
  if (node->cli_stub_any_op_gen ()
      || node->imported ())
    {
      return 0;
    }

  TAO_OutStream *os = this->ctx_->stream ();

  *os << be_nl << be_nl
      << "// TAO_IDL - Generated from " << be_nl
      << "// " << __FILE__ << ":" << __LINE__ << be_nl << be_nl;

  *os << be_global->core_versioning_begin () << be_nl;
  
  // Since we don't generate CDR stream operators for types that
  // explicitly contain a local interface (at some level), we
  // must override these Any template class methods to avoid
  // calling the non-existent operators. The zero return value
  // will eventually cause CORBA::MARSHAL to be raised if this
  // type is inserted into an Any and then marshaled.
  if (node->is_local ())
    {
      *os << "namespace TAO" << be_nl
          << "{" << be_idt_nl
          << "template<>" << be_nl
          << "::CORBA::Boolean" << be_nl
          << "Any_Dual_Impl_T<" << node->name ()
          << ">::marshal_value (TAO_OutputCDR &)" << be_nl
          << "{" << be_idt_nl
          << "return false;" << be_uidt_nl
          << "}";

      *os << be_nl << be_nl
          << "template<>" << be_nl
          << "::CORBA::Boolean" << be_nl
          << "Any_Dual_Impl_T<" << node->name ()
          << ">::demarshal_value (TAO_InputCDR &)" << be_nl
          << "{" << be_idt_nl
          << "return false;" << be_uidt_nl
          << "}" << be_uidt_nl
          << "}" << be_nl;
    }
    
  // If this is non-zero, we want to call its tc_name()
  // for the TypeCode to pass to the Any operator impls.  
  be_typedef *td = this->ctx_->tdef ();

  // Copying insertion.
  *os << be_nl << "// Copying insertion." << be_nl
      << "void operator<<= (" << be_idt << be_idt_nl
      << "::CORBA::Any &_tao_any," << be_nl
      << "const " << node->name () << " &_tao_elem" << be_uidt_nl
      << ")" << be_uidt_nl
      << "{" << be_idt_nl

      << "if (0 == &_tao_elem) // Trying to de-reference NULL object"
      << be_idt_nl
      << "_tao_any <<= static_cast<" << node->name ()
      << " *>( 0 ); // Use non-copying insertion of a NULL" << be_uidt_nl
      << "else" << be_idt_nl

      << "TAO::Any_Dual_Impl_T<" << node->name () << ">::insert_copy ("
      << be_idt << be_idt_nl
      << "_tao_any," << be_nl
      << node->name () << "::_tao_any_destructor," << be_nl
      << (td != 0 ? td->tc_name () : node->tc_name ()) << "," << be_nl
      << "_tao_elem" << be_uidt_nl
      << ");" << be_uidt << be_uidt << be_uidt_nl
      << "}" << be_nl << be_nl;

  // Non-copying insertion.
  *os << "// Non-copying insertion." << be_nl
      << "void operator<<= (" << be_idt << be_idt_nl
      << "::CORBA::Any &_tao_any," << be_nl
      << node->name () << " *_tao_elem" << be_uidt_nl
      << ")" << be_uidt_nl
      << "{" << be_idt_nl
      << "TAO::Any_Dual_Impl_T<" << node->name () << ">::insert ("
      << be_idt << be_idt_nl
      << "_tao_any," << be_nl
      << node->name () << "::_tao_any_destructor," << be_nl
      << (td != 0 ? td->tc_name () : node->tc_name ()) << "," << be_nl
      << "_tao_elem" << be_uidt_nl
      << ");" << be_uidt << be_uidt_nl
      << "}" << be_nl << be_nl;

  // Extraction to non-const pointer (deprecated, just calls the other).
  *os << "// Extraction to non-const pointer (deprecated)." << be_nl
      << "::CORBA::Boolean operator>>= (" << be_idt << be_idt_nl
      << "const ::CORBA::Any &_tao_any," << be_nl
      << node->name () << " *&_tao_elem" << be_uidt_nl
      << ")" << be_uidt_nl
      << "{" << be_idt_nl
      << "return _tao_any >>= const_cast<" << be_idt << be_idt_nl
      << "const " << node->name () << " *&> (" << be_nl
      << "_tao_elem" << be_uidt_nl
      << ");" << be_uidt << be_uidt_nl
      << "}" << be_nl << be_nl;

  // Extraction to const pointer.
  *os << "// Extraction to const pointer." << be_nl
      << "::CORBA::Boolean operator>>= (" << be_idt << be_idt_nl
      << "const ::CORBA::Any &_tao_any," << be_nl
      << "const " << node->name () << " *&_tao_elem" << be_uidt_nl
      << ")" << be_uidt_nl
      << "{" << be_idt_nl
      << "return" << be_idt_nl
      << "TAO::Any_Dual_Impl_T<" << node->name () << ">::extract ("
      << be_idt << be_idt_nl
      << "_tao_any," << be_nl
      << node->name () << "::_tao_any_destructor," << be_nl
      << (td != 0 ? td->tc_name () : node->tc_name ()) << "," << be_nl
      << "_tao_elem" << be_uidt_nl
      << ");" << be_uidt << be_uidt << be_uidt_nl
      << "}";

  *os << be_global->core_versioning_end () << be_nl;
  
  node->cli_stub_any_op_gen (1);
  return 0;
}
