//
// any_op_cs.cpp,v 1.36 2002/10/14 21:10:47 parsons Exp
//

// ============================================================================
//
// = LIBRARY
//    TAO IDL
//
// = FILENAME
//    any_op_cs.cpp
//
// = DESCRIPTION
//    Visitor generating code for Any operators for Union.
//
// = AUTHOR
//    Aniruddha Gokhale
//
// ============================================================================

ACE_RCSID (be_visitor_union, 
           any_op_cs, 
           "any_op_cs.cpp,v 1.36 2002/10/14 21:10:47 parsons Exp")

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

be_visitor_union_any_op_cs::be_visitor_union_any_op_cs (
    be_visitor_context *ctx
  )
  : be_visitor_union (ctx)
{
}

be_visitor_union_any_op_cs::~be_visitor_union_any_op_cs (void)
{
}

int
be_visitor_union_any_op_cs::visit_union (be_union *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 << "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 (!node->is_local ())
    {
      *os << "TAO_OutputCDR stream;" << be_nl << be_nl
          << "if (stream << _tao_elem)" << be_idt_nl
          << "{" << be_idt_nl;
    }
  else
    {
      *os << node->name () << " *_tao_elem_copy = 0;" << be_nl
          << "ACE_NEW (" << be_idt << be_idt_nl
          << "_tao_elem_copy," << be_nl
          << node->name () << " (_tao_elem)" << be_uidt_nl
          << ");" << be_uidt_nl << be_nl;
    }

  *os << "_tao_any._tao_replace (" << be_idt << be_idt_nl
      << node->tc_name () << "," << be_nl;

  if (!node->is_local ())
    {
      *os << "TAO_ENCAP_BYTE_ORDER," << be_nl
          << "stream.begin ()" << be_uidt_nl;
    }
  else
    {
      *os << "1," << be_nl
          << "_tao_elem_copy," << be_nl
          << node->name () << "::_tao_any_destructor" << be_uidt_nl;
    }

  *os << ");" << be_uidt;

  if (node->is_local ())
    {
      *os << be_nl << be_nl << "_tao_any.contains_local (1);";
    }
  else
    {
      *os << be_uidt_nl
          << "}" << be_uidt;
    }

  *os << be_uidt_nl << "}\n" << be_nl;

  // Non-copying insertion operator.

  *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;

  if (!node->is_local ())
    {
      *os << "TAO_OutputCDR stream;" << be_nl << be_nl
          << "if (stream << *_tao_elem)" << be_idt_nl
          << "{" << be_idt_nl;
    }

  *os << "_tao_any._tao_replace (" << be_idt << be_idt_nl
      << node->tc_name () << "," << be_nl;

  if (!node->is_local ())
    {
      *os << "TAO_ENCAP_BYTE_ORDER," << be_nl
          << "stream.begin ()," << be_nl;
    }

  *os << "1," << be_nl
      << "_tao_elem," << be_nl
      << node->name () << "::_tao_any_destructor" << be_uidt_nl
      << ");" << be_uidt;

  if (node->is_local ())
    {
      *os << be_nl << be_nl << "_tao_any.contains_local (1);";
    }
  else
    {
      *os << be_uidt_nl
          << "}" << be_uidt;
    }

  *os << be_uidt_nl << "}\n" << be_nl;

  // Extraction to non-const pointer operator.

  *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 >>= ACE_const_cast (" << be_idt << be_idt_nl
      << "const " << node->name () << " *&," << be_nl
      << "_tao_elem" << be_uidt_nl
      << ");" << be_uidt << be_uidt_nl
      << "}\n\n";

  // Exraction to const pointer operator.

  *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
      << "_tao_elem = 0;" << be_nl << be_nl
      << "ACE_TRY_NEW_ENV" << be_nl
      << "{" << be_idt_nl
      << "CORBA::TypeCode_var type = _tao_any.type ();" << be_nl << be_nl
      << "CORBA::Boolean _tao_result =" << be_idt_nl
      << "type->equivalent (" << be_idt << be_idt_nl
      << node->tc_name () << be_nl
      << "ACE_ENV_ARG_PARAMETER" << be_uidt_nl
      << ");" << be_uidt << be_uidt_nl
      << "ACE_TRY_CHECK;" << be_nl << be_nl
      << "if (_tao_result == 0)" << be_idt_nl
      << "{" << be_idt_nl
      << "return 0; // not equivalent" << be_uidt_nl
      << "}" << be_uidt_nl << be_nl;

  if (!node->is_local ())
    {
      *os << "if (_tao_any.any_owns_data ())" << be_idt_nl
          << "{" << be_idt_nl;
    }

  *os << "_tao_elem = ACE_static_cast (" << be_idt << be_idt_nl
      << "const " << node->name () << " *," << be_nl
      << "_tao_any.value ()" << be_uidt_nl
      << ");" << be_uidt_nl << be_nl
      << "return 1;" << be_uidt_nl;

  if (!node->is_local ())
    {
      *os << "}" << be_uidt_nl
          << "else" << be_idt_nl  // else any does not own the data
          << "{" << be_idt_nl
          << node->name () << " *tmp;" << be_nl
          << "ACE_NEW_RETURN (" << be_idt << be_idt_nl
          << "tmp," << be_nl
          << node->name () << "," << be_nl
          << "0" << be_uidt_nl
          << ");" << be_uidt_nl << be_nl
          << "TAO_InputCDR stream (" << be_idt << be_idt_nl
          << "_tao_any._tao_get_cdr ()," << be_nl
          << "_tao_any._tao_byte_order ()" << be_uidt_nl
          << ");" << be_uidt_nl << be_nl
          << be_nl << "if (stream >> *tmp)" << be_idt_nl
          << "{" << be_idt_nl
          << "((CORBA::Any *)&_tao_any)->_tao_replace (" << be_idt << be_idt_nl
          << node->tc_name () << "," << be_nl
          << "1," << be_nl
          << "ACE_static_cast (void *, tmp)," << be_nl
          << node->name () << "::_tao_any_destructor" << be_uidt_nl
          << ");" << be_uidt_nl << be_nl
          << "_tao_elem = tmp;" << be_nl
          << "return 1;" << be_uidt_nl
          << "}" << be_uidt_nl
          << "else" << be_idt_nl
          << "{" << be_idt_nl
          << "delete tmp;" << be_uidt_nl
          << "}" << be_uidt << be_uidt_nl
          << "}" << be_uidt << be_uidt_nl;
    }

  *os << "}" << be_nl
      << "ACE_CATCHANY" << be_nl
      << "{" << be_nl
      << "}" << be_nl
      << "ACE_ENDTRY;" << be_nl << be_nl
      << "return 0;" << be_uidt_nl
      << "}";

  // All we have to do is to visit the scope and generate code.
  if (this->visit_scope (node) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union::visit_union - "
                         "codegen for scope failed\n"), 
                        -1);
    }

  node->cli_stub_any_op_gen (1);
  return 0;
}

int
be_visitor_union_any_op_cs::visit_union_branch (be_union_branch *node)
{
  be_type *bt = be_type::narrow_from_decl (node->field_type ());

  if (!bt)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_any_op_cs::"
                         "visit_union_branch - "
                         "Bad field type\n"), 
                        -1);
    }

  if (bt->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_any_op_cs::"
                         "visit_union_branch - "
                         "codegen for field type failed\n"), 
                        -1);
    }

  return 0;
}

int
be_visitor_union_any_op_cs::visit_enum (be_enum *node)
{
  if (node->cli_hdr_any_op_gen ()
      || node->imported ())
    {
      return 0;
    }

  be_visitor_enum_any_op_cs visitor (this->ctx_);

  if (node->accept (&visitor) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_any_op_cs::"
                         "visit_enum - "
                         "codegen for field type failed\n"), 
                        -1);
    }

  return 0;
}

int
be_visitor_union_any_op_cs::visit_structure (be_structure *node)
{
  if (node->cli_hdr_any_op_gen ()
      || node->imported ())
    {
      return 0;
    }

  be_visitor_structure_any_op_cs visitor (this->ctx_);

  if (node->accept (&visitor) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_any_op_cs::"
                         "visit_structure - "
                         "codegen for field type failed\n"), 
                        -1);
    }

  return 0;
}

