
//=============================================================================
/**
 *  @file    invoke_cs.cpp
 *
 *  Visitor generating the code that passes arguments to the CDR operators
 *
 *  @author Aniruddha Gokhale
 */
//=============================================================================

#include "argument.h"

// ****************************************************************************
// visitor for arguments passing to the CDR operators.
// ****************************************************************************

be_visitor_args_invoke_cs::
be_visitor_args_invoke_cs (be_visitor_context *ctx)
  : be_visitor_args (ctx)
{
}

be_visitor_args_invoke_cs::
~be_visitor_args_invoke_cs (void)
{
}

int be_visitor_args_invoke_cs::visit_argument (be_argument *node)
{
  this->ctx_->node (node);
  be_type *bt =
    be_type::narrow_from_decl (node->field_type ());

  if (!bt)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_argument - ")
                         ACE_TEXT ("Bad argument type\n")),
                        -1);
    }

  // Different types have different mappings when used as in/out or
  // inout parameters. Let this visitor deal with the type

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

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << "(_tao_out << ";
          break;
       case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
        case AST_Argument::dir_OUT:
          *os << "(_tao_in >> ";
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_argument - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  if (bt->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_argument - ")
                         ACE_TEXT ("cannot accept visitor\n")),
                        -1);
    }

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << ")";
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
        case AST_Argument::dir_OUT:
          *os << ")";
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_argument - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::visit_array (be_array *node)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          *os << node->name () << "_forany ("
              << "(" << node->name () << "_slice *)"
              << arg->local_name () << ")";
          break;
        case AST_Argument::dir_INOUT:
          *os << node->name () << "_forany ("
              << arg->local_name () << ")";
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
        case AST_Argument::dir_OUT:
          *os << "_tao_argument_" << arg->local_name ();
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_array - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::visit_enum (be_enum *)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
        case AST_Argument::dir_OUT:
          *os << arg->local_name ();
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_enum - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::visit_interface (
  be_interface *)
{
  return this->emit_common ();
}

int be_visitor_args_invoke_cs::visit_interface_fwd (
  be_interface_fwd *)
{
  return this->emit_common ();
}

int be_visitor_args_invoke_cs::visit_valuebox (
  be_valuebox *)
{
  return this->emit_common ();
}

int be_visitor_args_invoke_cs::visit_valuetype (
  be_valuetype *)
{
  return this->emit_common ();
}

int
be_visitor_args_invoke_cs::visit_valuetype_fwd (
  be_valuetype_fwd *)
{
  return this->emit_common ();
}

int be_visitor_args_invoke_cs::visit_predefined_type (
  be_predefined_type *node)
{
  return this->gen_pd_arg (node, true);
}

int be_visitor_args_invoke_cs::visit_sequence (be_sequence *)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          *os << "*" << arg->local_name () << ".ptr ()";
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_interface - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::visit_string (be_string *node)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      // We need to make a distinction between bounded and unbounded strings.
      if (node->max_size ()->ev ()->u.ulval == 0)
        {
          // Unbounded.
          switch (this->direction ())
            {
            case AST_Argument::dir_IN:
              break;
            case AST_Argument::dir_INOUT:
              *os << arg->local_name ();
              break;
            case AST_Argument::dir_OUT:
              *os << arg->local_name () << ".ptr ()";
              break;
            }
        }
      else
        {
          // Bounded.
          switch (this->direction ())
            {
            case AST_Argument::dir_IN:
              break;
            case AST_Argument::dir_INOUT:
              if (node->width () == (long) sizeof (char))
                {
                  *os << "::ACE_InputCDR::to_string (";
                }
              else
                {
                  *os << "::ACE_InputCDR::to_wstring (";
                }

              *os << arg->local_name () << ", "
                  << node->max_size ()->ev ()->u.ulval << ")";
              break;
            case AST_Argument::dir_OUT:
              if (node->width () == (long) sizeof (char))
                {
                  *os << "::ACE_InputCDR::to_string (";
                }
              else
                {
                  *os << "::ACE_InputCDR::to_wstring (";
                }

              *os << arg->local_name () << ".ptr (), "
                  << node->max_size ()->ev ()->u.ulval << ")";
              break;
            }
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_interface - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::visit_structure (be_structure *node)
{
  return this->emit_common2 (node);
}

int be_visitor_args_invoke_cs::visit_union (be_union *node)
{
  return this->emit_common2 (node);
}

int be_visitor_args_invoke_cs::visit_typedef (be_typedef *node)
{
  this->ctx_->alias (node);

  if (node->primitive_base_type ()->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("visit_typedef - ")
                         ACE_TEXT ("accept on primitive ")
                         ACE_TEXT ("type failed\n")),
                        -1);
    }

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

int
be_visitor_args_invoke_cs::visit_component (
    be_component *node
  )
{
  return this->visit_interface (node);
}

int
be_visitor_args_invoke_cs::visit_component_fwd (
    be_component_fwd *node
  )
{
  return this->visit_interface_fwd (node);
}

int
be_visitor_args_invoke_cs::visit_eventtype (
    be_eventtype *node
  )
{
  return this->visit_valuetype (node);
}

int
be_visitor_args_invoke_cs::visit_eventtype_fwd (
    be_eventtype_fwd *node
  )
{
  return this->visit_valuetype_fwd (node);
}

int
be_visitor_args_invoke_cs::visit_home (
    be_home *node
  )
{
  return this->visit_interface (node);
}


int be_visitor_args_invoke_cs::emit_common (void)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          *os << arg->local_name () << ".ptr ()";
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("emit_common - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}

int be_visitor_args_invoke_cs::emit_common2 (be_type *node)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_argument *arg =
    be_argument::narrow_from_decl (this->ctx_->node ());

  if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_OUTPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          break;
        }
    }
  else if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_INPUT)
    {
      switch (this->direction ())
        {
        case AST_Argument::dir_IN:
          break;
        case AST_Argument::dir_INOUT:
          *os << arg->local_name ();
          break;
        case AST_Argument::dir_OUT:
          if (node->size_type () == AST_Type::VARIABLE)
            *os << "*" << arg->local_name () << ".ptr ()";
          else
            *os << arg->local_name ();
          break;
        }
    }
  else
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("be_visitor_args_invoke_cs::")
                         ACE_TEXT ("emit_common2 - ")
                         ACE_TEXT ("Bad substate\n")),
                        -1);
    }

  return 0;
}
