//
// $Id$
//

// ============================================================================
//
// = LIBRARY
//    TAO IDL
//
// = FILENAME
//    union_branch_cdr_op_ci.cpp
//
// = DESCRIPTION
//    Visitor generating code for Union_Branch in the client stubs file.
//
// = AUTHOR
//    Aniruddha Gokhale
//
// ============================================================================

#include        "idl.h"
#include        "idl_extern.h"
#include        "be.h"

#include "be_visitor_union_branch.h"

ACE_RCSID(be_visitor_union_branch, cdr_op_ci, "$Id$")


// **********************************************
//  visitor for union_branch in the client stubs file
// **********************************************

// constructor
be_visitor_union_branch_cdr_op_ci::be_visitor_union_branch_cdr_op_ci (be_visitor_context *ctx)
  : be_visitor_decl (ctx)
{
}

// destructor
be_visitor_union_branch_cdr_op_ci::~be_visitor_union_branch_cdr_op_ci (void)
{
}

// visit the union_branch node
int
be_visitor_union_branch_cdr_op_ci::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_branch_cdr_op_ci::"
                         "visit_union_branch - "
                         "Bad union_branch type\n"
                         ), -1);
    }

  this->ctx_->node (node); // save the node
  if (bt->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_union_branch - "
                         "codegen for union_branch type failed\n"
                         ), -1);
    }
  return 0;
}

// visit array
int
be_visitor_union_branch_cdr_op_ci::visit_array (be_array *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_array - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // for anonymous arrays, the type name has a _ prepended. We compute the
  // fullname with or without the underscore and use it later on.
  char fname [NAMEBUFSIZE];  // to hold the full and

  // save the node's local name and full name in a buffer for quick
  // use later on
  ACE_OS::memset (fname, '\0', NAMEBUFSIZE);
  if (!this->ctx_->alias () // not a typedef
      && node->is_child (this->ctx_->scope ()))
    {
      // for anonymous arrays ...
      // we have to generate a name for us that has an underscore
      // prepended to our local name. This needs to be inserted after
      // the parents's name
      if (node->is_nested ())
        {
          be_decl *parent =
            be_scope::narrow_from_scope (node->defined_in ())->decl ();
          ACE_OS::sprintf (fname, "%s::_%s", parent->full_name (),
                           node->local_name ()->get_string ());
        }
      else
        {
          ACE_OS::sprintf (fname, "_%s", node->full_name ());
        }
    }
  else
    {
      // typedefed node
      ACE_OS::sprintf (fname, "%s", node->full_name ());
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << fname << " _tao_union_tmp;" << be_nl
          << fname << "_forany " << be_idt_nl
          << "_tao_union_helper (_tao_union_tmp);" << be_uidt_nl
          << "result = strm >> _tao_union_helper;" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union." << f->local_name ()
          << " (_tao_union_tmp);" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      return 0;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << fname << "_forany " << be_idt_nl
          << "_tao_union_tmp (_tao_union."
          << f->local_name () << " ());" << be_uidt_nl
          << "result = strm << _tao_union_tmp;";
      return 0;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // This is done in cdr_op_cs.cpp  and hacked into *.i.
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_array - "
                         "bad sub state\n"
                         ), -1);
    }

  // if not a typedef and we are defined in the use scope, we must be defined

  if (!this->ctx_->alias () // not a typedef
      && node->is_child (this->ctx_->scope ()))
    {
      // this is the case for anonymous arrays.

      // instantiate a visitor context with a copy of our context. This info
      // will be modified based on what type of node we are visiting
      be_visitor_context ctx (*this->ctx_);
      ctx.node (node); // set the node to be the node being visited. The scope
                       // is still the same

      // first generate the  declaration
      ctx.state (TAO_CodeGen::TAO_ARRAY_CDR_OP_CI);
      be_visitor *visitor = tao_cg->make_visitor (&ctx);
      if (!visitor)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_array - "
                             "Bad visitor\n"
                             ), -1);
        }
      if (node->accept (visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_array - "
                             "codegen failed\n"
                             ), -1);
        }
      delete visitor;
    }
  return 0;
}

// visit enum type
int
be_visitor_union_branch_cdr_op_ci::visit_enum (be_enum *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_array - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << node->name () << " _tao_union_tmp"
          << ";" << be_nl
          << "result = strm >> _tao_union_tmp;" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union." << f->local_name ()
          << " (_tao_union_tmp);" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      return 0;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union." << f->local_name () << " ();";
      return 0;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // proceed further
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_enum - "
                         "bad sub state\n"
                         ), -1);
    }

  if (node->node_type () != AST_Decl::NT_typedef // not a typedef
      && node->is_child (this->ctx_->scope ())) // node is defined inside the
    // structure
    {
      // instantiate a visitor context with a copy of our context. This info
      // will be modified based on what type of node we are visiting
      be_visitor_context ctx (*this->ctx_);
      ctx.node (node); // set the node to be the node being visited. The scope
                       // is still the same

      // generate the typcode for enums
      ctx.state (TAO_CodeGen::TAO_ENUM_CDR_OP_CI);
      be_visitor *visitor = tao_cg->make_visitor (&ctx);
      if (!visitor)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_enum - "
                             "Bad visitor\n"
                             ), -1);
        }
      if (node->accept (visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_enum - "
                             "codegen failed\n"
                             ), -1);
        }
      delete visitor;
    }
  return 0;
}

// visit interface type
int
be_visitor_union_branch_cdr_op_ci::visit_interface (be_interface *node)
{
  TAO_OutStream *os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_interface - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << node->name () << "_var _tao_union_tmp;" << be_nl
          << "result = strm >> _tao_union_tmp.inout ();" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union."
          << f->local_name () << " (_tao_union_tmp.in ());" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      break;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union."
          << f->local_name () << " ();";
      break;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // nothing to be done because an interface cannit be declared inside a
      // structure
      break;

    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_interface - "
                         "bad sub state\n"
                         ), -1);
    }
  return 0;
}

// visit interface forward type
int
be_visitor_union_branch_cdr_op_ci::visit_interface_fwd (be_interface_fwd *node)
{
  TAO_OutStream *os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_interface_fwd - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << node->name () << "_var _tao_union_tmp;" << be_nl
          << "result = strm >> _tao_union_tmp.inout ();" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union."
          << f->local_name () << " (_tao_union_tmp.in ());" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      break;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result  = strm << _tao_union."
          << f->local_name () << " ();";
      break;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // nothing to be done because an interface cannit be declared inside a
      // structure
      break;

    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_interface_fwd - "
                         "bad sub state\n"
                         ), -1);
    }
  return 0;
}

// visit predefined type
int
be_visitor_union_branch_cdr_op_ci::visit_predefined_type (be_predefined_type *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_predefined_type - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:

      if (node->pt () == AST_PredefinedType::PT_pseudo)
        {
          if (!ACE_OS::strcmp (node->local_name ()->get_string (), "TypeCode"))
            *os << "CORBA::TypeCode_var _tao_union_tmp;" << be_nl;

          else if (!ACE_OS::strcmp (node->local_name ()->get_string (), "Object"))
            *os << "CORBA::Object_var _tao_union_tmp;" << be_nl;

          //@@TODO - case for ValueBase.

          *os << "result = strm >> _tao_union_tmp.out ();" << be_nl
              << "if (result)" << be_idt_nl
              << "{" << be_idt_nl
              << "_tao_union." << f->local_name () << " (_tao_union_tmp.in ());";
          
        }
      else if (node->pt () == AST_PredefinedType::PT_char)
        *os << "CORBA::Char _tao_union_tmp;" << be_nl
            << "CORBA::Any::to_char _tao_union_helper "
            << "(_tao_union_tmp);" << be_nl
            << "result = strm >> _tao_union_helper;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union." << f->local_name ()
            << " (_tao_union_tmp);";

      else if (node->pt () == AST_PredefinedType::PT_wchar)
        *os << "CORBA::WChar _tao_union_tmp;" << be_nl
            << "CORBA::Any::to_wchar _tao_union_helper "
            << "(_tao_union_tmp);" << be_nl
            << "result = strm >> _tao_union_helper;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union." << f->local_name ()
            << " (_tao_union_tmp);";

      else if (node->pt () == AST_PredefinedType::PT_octet)
        *os << "CORBA::Octet _tao_union_tmp;" << be_nl
            << "CORBA::Any::to_octet _tao_union_helper "
            << "(_tao_union_tmp);" << be_nl
            << "result = strm >> _tao_union_helper;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union." << f->local_name ()
            << " (_tao_union_tmp);";

      else if (node->pt () == AST_PredefinedType::PT_boolean)
        *os << "CORBA::Boolean _tao_union_tmp;" << be_nl
            << "CORBA::Any::to_boolean _tao_union_helper "
            << "(_tao_union_tmp);" << be_nl
            << "result = strm >> _tao_union_helper;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union." << f->local_name ()
            << " (_tao_union_tmp);";

      else
        *os << node->name () << " _tao_union_tmp;" << be_nl
            << "result = strm >> _tao_union_tmp;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union." << f->local_name ()
            << " (_tao_union_tmp);";

      *os << be_nl;
      *os << "_tao_union._d (_tao_discriminant);" << be_uidt_nl;
      *os << "}" << be_uidt;

      break;

    case TAO_CodeGen::TAO_CDR_OUTPUT:

      *os << "result = ";
      if (node->pt () == AST_PredefinedType::PT_pseudo)
        *os << "strm << _tao_union." << f->local_name () << " ();";
      else if (node->pt () == AST_PredefinedType::PT_char)
        *os << "strm << CORBA::Any::from_char (_tao_union."
            << f->local_name () << " ());";
      else if (node->pt () == AST_PredefinedType::PT_wchar)
        *os << "strm << CORBA::Any::from_wchar (_tao_union."
            << f->local_name () << " ());";
      else if (node->pt () == AST_PredefinedType::PT_octet)
        *os << "strm << CORBA::Any::from_octet (_tao_union."
            << f->local_name () << " ());";
      else if (node->pt () == AST_PredefinedType::PT_boolean)
        *os << "strm << CORBA::Any::from_boolean (_tao_union."
            << f->local_name () << " ());";
      else
        *os << "strm << _tao_union." << f->local_name () << " ();";
      break;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // nothing to be done
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_array - "
                         "bad sub state\n"
                         ), -1);
    }

  return 0;
}

int
be_visitor_union_branch_cdr_op_ci::visit_sequence (be_sequence *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_sequence - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      {
        // If the typedef'd sequence is included from another
        // file, node->name() won't work. The following works
        // for all typedefs, external or not.
        be_typedef *td = this->ctx_->alias ();

        if (td)
          {
            *os << td->name ();
          }
        else
          {
            *os << node->name ();
          }

        *os << " _tao_union_tmp;" << be_nl
            << "result = strm >> _tao_union_tmp;" << be_nl
            << "if (result)" << be_idt_nl
            << "{" << be_idt_nl
            << "_tao_union."
            << f->local_name () << " (_tao_union_tmp);" << be_nl
            << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
            << "}" << be_uidt;

        return 0;
      }

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union."
          << f->local_name () << " ();";
      return 0;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // proceed further
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_sequence - "
                         "bad sub state\n"
                         ), -1);
    }

  if (node->node_type () != AST_Decl::NT_typedef
      && node->is_child (this->ctx_->scope ()))
    // not a typedef AND
    // node is defined inside the structure
    {
      // Anonymous sequence
      // instantiate a visitor context with a copy of our context. This info
      // will be modified based on what type of node we are visiting
      be_visitor_context ctx (*this->ctx_);
      ctx.node (node); // set the node to be the node being visited. The scope is
      // still the same

      // generate the inline code for structs
      ctx.state (TAO_CodeGen::TAO_SEQUENCE_CDR_OP_CI);
      be_visitor *visitor = tao_cg->make_visitor (&ctx);
      if (!visitor)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_sequence - "
                             "Bad visitor\n"
                             ), -1);
        }
      if (node->accept (visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_sequence - "
                             "codegen failed\n"
                             ), -1);
        }
      delete visitor;
    }
  return 0;
}

// visit string type
int
be_visitor_union_branch_cdr_op_ci::visit_string (be_string *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_string - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      if (node->width () == (long) sizeof (char))
        {
          *os << "CORBA::String_var _tao_union_tmp;" << be_nl;
        }
      else
        {
          *os << "CORBA::WString_var _tao_union_tmp;" << be_nl;
        }

      *os << "result = strm >> _tao_union_tmp.out ();" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union."
          << f->local_name () << " (_tao_union_tmp);" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      break;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union."
          << f->local_name () << " ();";
      break;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // nothing to be done
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_array - "
                         "bad sub state\n"
                         ), -1);
    }

  return 0;
}

// visit structure type
int
be_visitor_union_branch_cdr_op_ci::visit_structure (be_structure *node)
{
  TAO_OutStream *os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_structure - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << node->name () << " _tao_union_tmp;" << be_nl
          << "result = strm >> _tao_union_tmp;" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union." << f->local_name ()
          << " (_tao_union_tmp);" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      return 0;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union."
          << f->local_name () << " ();";
      return 0;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // proceed further
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_structure - "
                         "bad sub state\n"
                         ), -1);
    }

  if (node->node_type () != AST_Decl::NT_typedef // not a typedef
      && node->is_child (this->ctx_->scope ())) // node is defined inside the
    // structure
    {
      // instantiate a visitor context with a copy of our context. This info
      // will be modified based on what type of node we are visiting
      be_visitor_context ctx (*this->ctx_);
      ctx.node (node); // set the node to be the node being visited. The scope is
      // still the same

      // generate the inline code for structs
      ctx.state (TAO_CodeGen::TAO_STRUCT_CDR_OP_CI);
      be_visitor *visitor = tao_cg->make_visitor (&ctx);
      if (!visitor)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_struct - "
                             "Bad visitor\n"
                             ), -1);
        }
      if (node->accept (visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_struct - "
                             "codegen failed\n"
                             ), -1);
        }
      delete visitor;
    }
  return 0;
}

// visit typedef type
int
be_visitor_union_branch_cdr_op_ci::visit_typedef (be_typedef *node)
{
  this->ctx_->alias (node); // save the typedef node for use in code generation
                           // as we visit the base type

  // the node to be visited in the base primitve type that gets typedefed
  be_type *bt = node->primitive_base_type ();
  if (!bt || (bt->accept (this) == -1))
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_public_ci::"
                         "visit_typedef - "
                         "Bad primitive type\n"
                         ), -1);
    }

  this->ctx_->alias (0);
  return 0;
}

// visit union type
int
be_visitor_union_branch_cdr_op_ci::visit_union (be_union *node)
{
  TAO_OutStream *os; // output stream
  os = this->ctx_->stream ();

  // retrieve the union_branch node
  be_union_branch *f = this->ctx_->be_node_as_union_branch ();
  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_union - "
                         "cannot retrieve union_branch node\n"
                         ), -1);
    }

  // check what is the code generations substate. Are we generating code for
  // the in/out operators for our parent or for us?
  switch (this->ctx_->sub_state ())
    {
    case TAO_CodeGen::TAO_CDR_INPUT:
      *os << node->name () << " _tao_union_tmp"
          << ";" << be_nl
          << "result = strm >> _tao_union_tmp;" << be_nl
          << "if (result)" << be_idt_nl
          << "{" << be_idt_nl
          << "_tao_union." << f->local_name ()
          << " (_tao_union_tmp);" << be_nl
          << "_tao_union._d (_tao_discriminant);" << be_uidt_nl
          << "}" << be_uidt;

      return 0;

    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "result = strm << _tao_union."
          << f->local_name () << " ();";
      return 0;

    case TAO_CodeGen::TAO_CDR_SCOPE:
      // proceed further
      break;
    default:
      // error
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                         "visit_union - "
                         "bad sub state\n"
                         ), -1);
    }

  if (node->node_type () != AST_Decl::NT_typedef // not a typedef
      && node->is_child (this->ctx_->scope ())) // node is defined inside the
    // structure
    {
      // instantiate a visitor context with a copy of our context. This info
      // will be modified based on what type of node we are visiting
      be_visitor_context ctx (*this->ctx_);
      ctx.node (node); // set the node to be the node being visited. The scope is
      // still the same

      // generate the inline code for union
      ctx.state (TAO_CodeGen::TAO_UNION_CDR_OP_CI);
      be_visitor *visitor = tao_cg->make_visitor (&ctx);
      if (!visitor)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_union - "
                             "Bad visitor\n"
                             ), -1);
        }
      if (node->accept (visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_union_branch_cdr_op_ci::"
                             "visit_union - "
                             "codegen failed\n"
                             ), -1);
        }
      delete visitor;
    }
  return 0;
}

int 
be_visitor_union_branch_cdr_op_ci::explicit_default (void)
{
  be_union *bu = be_union::narrow_from_decl (this->ctx_->scope ());
  int def_index = bu->default_index ();

  if (def_index != -1)
    {
      be_union_branch *ub = 
        be_union_branch::narrow_from_decl (this->ctx_->node ());

      // instantiate a scope iterator.
      UTL_ScopeActiveIterator *si = 
        new UTL_ScopeActiveIterator (bu, 
                                     UTL_Scope::IK_decls);

      int i = 0; // counter
      be_union_branch *bub = 0; // union branch node
      AST_Decl *d = 0;  // temp node

      while (!(si->is_done ()))
        {
          // get the next AST decl node
          d = si->item ();

          if (!d->imported ())
            bub = be_union_branch::narrow_from_decl (d);

          if (bub == ub)
            {
              delete si;
              return (i == def_index);
            }
          else
            {
              i++;
              si->next ();
            }
        }

      delete si;
    }

  return 0;
}